CN114383143A - Kerosene waste liquid burns and purification treatment system - Google Patents
Kerosene waste liquid burns and purification treatment system Download PDFInfo
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- CN114383143A CN114383143A CN202111443728.8A CN202111443728A CN114383143A CN 114383143 A CN114383143 A CN 114383143A CN 202111443728 A CN202111443728 A CN 202111443728A CN 114383143 A CN114383143 A CN 114383143A
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- waste liquid
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- kerosene
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/04—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste liquors, e.g. sulfite liquors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/442—Waste feed arrangements
- F23G5/446—Waste feed arrangements for liquid waste
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/50—Control or safety arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/04—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention provides a kerosene waste liquid incineration and purification treatment system, which solves the problems of energy waste and environmental pollution caused by the fact that the conventional kerosene waste liquid treatment mode cannot be used for quickly, safely and reasonably treating. The system comprises a waste liquid storage unit, a waste liquid supply unit, a combustion unit, an incineration unit and a flue gas purification and absorption module; the waste liquid storage unit comprises a waste liquid storage tank and a waste liquid filling valve; the waste liquid supply unit comprises a supply pipeline connected with the waste liquid storage tank; the combustion unit comprises a combustor and a combustion fan, and the combustor is connected with the supply pipeline through an oil pump; the incineration unit comprises an incinerator and an oxygen supplementing fan, and the combustor is arranged on the incinerator; the flue gas purification absorption module comprises an absorption liquid circulation liquid storage tank, a washing tower connected with the incinerator and the circulation liquid storage tank, a spraying mechanism positioned at the inner top end of the washing tower, a liquid supply pipeline respectively connected with the circulation liquid storage tank and the spraying mechanism, and a booster pump arranged on the liquid supply pipeline; the bottom of the washing tower is communicated with the atmosphere through a smoke exhaust unit.
Description
Technical Field
The invention relates to a kerosene waste liquid treatment technology, in particular to a kerosene waste liquid incineration and purification treatment system which is mainly used for treating kerosene waste liquid formed by diluting a flammable ignition agent by kerosene of a liquid oxygen kerosene engine.
Background
In the test and application field of conventional liquid rocket engines, the production and use processes of various organic substances such as liquid propellant, igniter, catalyst and the like are related, wherein most liquid media are high-energy, inflammable, toxic and harmful dangerous articles, so that reasonable recovery and treatment measures need to be taken for waste liquid, and the liquid waste is prevented from generating danger or polluting the environment due to improper disposal. In the fields of industrial production, medicine manufacturing, fine chemical engineering and the like, toxic and harmful waste gas is usually discharged into the atmosphere after centralized collection, incineration treatment and innocent treatment, and heat generated in the incineration process is used for heating or production heating as far as possible. The liquid oxygen kerosene engine is used as important power equipment of a conventional carrier rocket, two media of kerosene and an igniter are used in the engine test stage or the launching task stage, waste liquid is generated in the links of medium filling, recovering, testing, cleaning and the like, the kerosene is different from hydrazine media and is easy to dissolve in water, the waste water can be collected and then enters a special industrial sewage system for treatment, the igniter is dissolved in the kerosene according to the organic matter similarity compatibility principle, the collected igniter is collected according to the kerosene waste liquid and then collected in a barrel, and a third-party waste liquid recovery company is entrusted to treat the waste liquid.
The waste liquid generated by using kerosene medium in the existing liquid rocket engine is generally collected by a waste oil barrel and stored to a certain amount, and then the third party with the treatment qualification of dangerous waste liquid is entrusted to recover and treat the waste liquid, and the condition of timely and safe treatment of the kerosene waste liquid is not provided in the common kerosene use place. In the later treatment of the kerosene waste liquid, if the kerosene waste liquid containing other components is directly incinerated by a third party, the problems of improper oxygen supplement proportion, low open combustion thermal decomposition temperature, short combustion time, incapability of thoroughly decomposing harmful substances and the like exist, so that secondary environmental pollution of intermediate pollutants is generated in the incineration treatment process; in addition, kerosene waste liquid recovered by a third party can flow to other industries and can be used for the purposes of mold surface rust prevention, support surface lubrication, organic matter cleaning agent and the like, so that the waste liquid pollutes the living environment in secondary conversion application; and if the single kerosene waste liquid amount is small, the recovery period of a unit waiting for treatment is too long, and the treatment cost investment is high, the kerosene waste liquid can be untreated or randomly discharged into other waste water treatment systems, so that the environment is polluted. Because the kerosene waste liquid cannot be quickly, safely and reasonably treated, the energy waste and the environmental pollution are caused, and the difficulty and the cost of later-stage pollutant discharge and treatment are invisibly increased.
Disclosure of Invention
The invention provides a kerosene waste liquid incineration and purification treatment system, which aims to solve the technical problems that the existing kerosene waste liquid treatment mode cannot quickly, safely and reasonably treat the kerosene waste liquid, so that energy waste and environmental pollution are caused, and further the difficulty and cost of pollutant treatment in the later period are increased.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a kerosene waste liquid incineration and purification treatment system is characterized in that:
comprises a waste liquid storage unit, a waste liquid supply unit, an incineration module and a flue gas purification and absorption module which are connected in sequence;
the waste liquid storage unit comprises a waste liquid storage tank and a waste liquid filling valve communicated with the waste liquid storage tank;
the waste liquid supply unit comprises a supply pipeline and a check valve, wherein one end of the supply pipeline is communicated with the bottom of the waste liquid storage tank;
the incineration module comprises a combustion unit and an incineration unit;
the combustion unit comprises a combustor, a combustion fan and an oil pump, wherein the combustion fan and the oil pump are positioned outside the combustor;
the incinerator unit comprises an incinerator and an oxygen supplementing fan positioned outside the incinerator, the combustor is arranged in the middle of one end of the incinerator, a sealed furnace chamber is formed between the incinerator and the combustor, and a flame outlet of the combustor faces towards the inner cavity of the incinerator; the oxygen supplementing fan is communicated with the furnace chamber; the incinerator is provided with a temperature sensor and a flame detection sensor;
the flue gas purification and absorption module comprises a circulating liquid storage tank, a flue gas purification and absorption unit and a flue gas discharge unit;
absorption liquid is arranged in the circulating liquid storage tank;
the flue gas purification absorption unit comprises a washing tower, a spraying mechanism, a liquid supply pipeline and a booster pump; the washing tower is positioned above the circulating liquid storage tank, the top of the washing tower is communicated with the smoke outlet of the incinerator, and the bottom of the washing tower is communicated with the circulating liquid storage tank; the spraying mechanism is positioned at the top end in the washing tower, two ends of the liquid supply pipeline are respectively communicated with the circulating liquid storage tank and the spraying mechanism, and the booster pump is arranged on the liquid supply pipeline;
one end of the smoke exhaust unit is communicated with the bottom of the washing tower, and the other end of the smoke exhaust unit is communicated with the atmosphere.
And the waste liquid storage tank, the combustor, the incinerator, the circulating liquid storage tank, the washing tower and the smoke exhaust unit are integrated on the skid-mounted mobile device.
Further, the skid-mounted moving device comprises a skid-mounted platform with rollers and a driving piece for driving the skid-mounted platform to move;
the circulating liquid storage tank is arranged on the skid-mounted platform, the waste liquid storage tank, the incinerator and the washing tower are all arranged on the circulating liquid storage tank, the combustor is arranged on the waste liquid storage tank and coaxially connected with the incinerator, and the smoke exhaust unit is arranged on the washing tower.
Furthermore, a smoke exhaust interface is arranged at the lower part of the side wall of the washing tower;
the smoke exhaust unit comprises a second smoke exhaust pipeline, and a steam-water separator, a smoke exhaust fan and a chimney which are sequentially arranged on the second smoke exhaust pipeline, wherein the inlet of the second smoke exhaust pipeline is connected with a smoke exhaust interface, the outlet of the second smoke exhaust pipeline is communicated with the atmosphere, and the steam-water separator is arranged close to the smoke exhaust interface.
Further, the waste liquid storage unit further comprises a filling filter, a vent valve and a first drain valve;
the filling filter is positioned on a pipeline between the waste liquid filling valve and the waste liquid storage tank, the vent valve is communicated with the top of the waste liquid storage tank, and the first sewage draining valve is communicated with the bottom of the waste liquid storage tank.
Furthermore, a supply valve and a supply filter which are positioned between the waste liquid storage tank and the check valve are also arranged on the supply pipeline, and the supply filter is arranged close to the check valve.
Furthermore, the incinerator is of a cylindrical structure with an opening in the middle of one end, and the burner is arranged at the opening of the incinerator;
the incinerator is made of stainless steel, the inner wall of the incinerator is provided with a refractory material, and the outer wall of the incinerator is coated with a heat insulation material;
the incinerator is provided with a visual observation window and a blast valve, the visual observation window is positioned at the axis position of the side wall of the incinerator and is made of a temperature-resistant transparent glass material, and the visual window is radially opposite to a flame outlet of the combustor; the explosion valve is arranged at the axial line position of the side wall of the incinerator, and the installation interface of the explosion valve points to the right upper side and is used for pressure relief and safety protection of the incinerator during emergency or abnormal combustion.
Furthermore, the upper part of the circulating liquid storage tank is provided with a washing tower installation interface and an absorption liquid filling interface, the absorption liquid filling interface is connected with a liquid filling pipeline, the liquid filling pipeline is provided with an absorption liquid filling valve and an absorption liquid filter, and the absorption liquid filter is arranged close to the circulating liquid storage tank;
the bottom of the circulating liquid storage tank is provided with a liquid drainage interface which is connected with a liquid drainage pipeline, and the liquid drainage pipeline is provided with a second blow-down valve;
and a liquid level meter and a liquid supply interface connected with a liquid supply pipeline are arranged on the side wall of the circulating liquid storage tank.
Furthermore, the bottom surface of the incinerator is provided with two oxygen supplementing interfaces respectively communicated with the oxygen supplementing fan, one oxygen supplementing interface is positioned in the middle of the bottom surface of the incinerator, and the other oxygen supplementing interface is positioned between the combustor and the oxygen supplementing interface in the middle of the bottom surface.
Further, the top of the washing tower is communicated with a smoke outlet of the incinerator through a first smoke exhaust pipeline;
the washing tower is of a vertical cylindrical stainless steel structure, the top of the washing tower is provided with a flue gas inlet used for being connected with a first flue gas exhaust pipeline, and the side wall of the lower part of the washing tower is provided with a flue gas exhaust interface used for being connected with a second flue gas exhaust pipeline.
Compared with the prior art, the invention has the advantages that:
1. the incineration and purification treatment system comprises a waste liquid storage tank, a combustor, an incinerator, a washing tower and a smoke exhaust unit which are sequentially communicated, the chemical pyrolysis incineration process is utilized to carry out incineration and smoke purification treatment on the kerosene waste liquid, and a liquid path system for supplying the kerosene waste liquid, a closed low-pressure incineration gas path system and an absorption liquid spraying purification and cooling water path system are organically combined, so that the harmless treatment of the kerosene waste liquid is realized, and the incineration and purification treatment system can be used for the research on the treatment technology of the kerosene waste liquid generated by using kerosene media, an igniter and the like of a liquid rocket engine.
2. The system also comprises a skid-mounted moving device, wherein the waste liquid storage unit, the waste liquid supply unit, the incineration module and the flue gas purification and absorption module are integrated on a skid-mounted platform, the layered stacking arrangement and the linear incineration process are combined, the high-efficiency thermal decomposition of the kerosene waste liquid is realized in a limited space, and the flue gas is discharged up to the standard.
3. The burner realizes the continuous and stable combustion of the kerosene waste liquid by utilizing the pump and the fan, so that the combusted smoke is supplied to the closed incinerator cavity, and the oxygen supplementing fan and the smoke exhausting fan supply and exhaust air according to the rated flow, so that the incinerator forms a low-pressure and high-temperature combustion working environment; the toxic and harmful substances in the waste liquid can be thoroughly combusted into carbon dioxide and water, and the generation of the harmful substances in the pyrolysis process is prevented; and the absorption liquid forms a spray absorption and spray cooling environment in the washing tower through the spray mechanism, the flue gas is purified and cooled by the washing tower and then is discharged by the smoke exhaust fan, and the spray absorption liquid is returned to the circulating water tank again.
Drawings
FIG. 1 is a schematic diagram showing the composition of a waste kerosene incineration and purification treatment system according to the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of a kerosene waste liquid incineration and purification treatment system according to the present invention;
FIG. 3 is a schematic structural view of an incineration module in an embodiment of the invention;
FIG. 4 is a schematic structural diagram of a flue gas cleaning absorption module in an embodiment of the invention;
FIG. 5 is a process flow diagram of a kerosene waste liquid incineration and purification treatment system according to the present invention;
wherein the reference numbers are as follows:
1-a waste liquid storage unit, 11-a waste liquid filling valve, 12-a filling filter, 13-a waste liquid storage tank, 14-a vent valve, 15-a first sewage draining valve and 16-a waste liquid filling pipeline;
2-waste liquid supply unit, 21-supply pipe, 22-supply valve, 23-supply filter, 24-check valve;
3-combustion unit, 31-combustion fan, 32-burner, 33-oil pump;
4-an incineration unit, 41-an incinerator, 42-an oxygen supplementing fan, 43-an oxygen supplementing interface, 44-a blasting valve, 45-a temperature sensor, 46-a flame detection sensor, 47-an oven chamber and 48-a smoke outlet;
5-a first smoke exhaust pipeline;
6-a flue gas purification and absorption unit, 61-a washing tower, 62-a flue gas inlet, 63-a spraying mechanism, 64-a liquid supply pipeline, 65-a booster pump and 66-a smoke exhaust interface;
7-a circulating liquid storage tank, 71-an absorption liquid filling valve, 72-an absorption liquid filter, 73-absorption liquid, 74-a liquid level meter, 75-a liquid supply interface, 76-a second blowdown valve, 77-a washing tower installation interface, 78-a liquid adding pipeline and 79-a liquid drainage pipeline;
8-smoke exhaust unit, 81-second smoke exhaust pipeline, 82-steam-water separator, 83-smoke exhaust fan and 84-chimney;
9-a skid-mounted moving device, 91-a skid-mounted platform, 92-a roller, 93-an equipment base and 94-a push-pull handle.
Detailed Description
The invention is described in further detail below with reference to the figures and specific embodiments.
The invention establishes a simple, easy, safe and reliable waste liquid incineration and purification treatment system according to the harmless treatment requirement of water-insoluble medium waste liquids such as liquid rocket engine kerosene, an igniter and the like, the system mainly comprises four parts of kerosene waste liquid supply, closed low-pressure incineration, flue gas purification and cooling and control, the purification requirements of the incineration and exhaust of the kerosene waste liquid are realized, and the system can also be used for the technical research of the dissolution incineration and purification treatment of the easily spontaneous combustion waste liquid in the kerosene waste liquid.
Because the liquid rocket engine needs to treat the waste liquid of the igniter, the kerosene waste liquid formed by dissolving the igniter in the kerosene needs to be treated in a harmless way, and the design of the kerosene waste liquid treatment system needs to consider the following contents:
(1) parameters of waste liquid: the igniter is a liquid chemical substance which is easy to self-ignite in normal-pressure air, can generate toxic and harmful gas when being burnt insufficiently, and can be dissolved in kerosene in any proportion;
(2) scale of waste liquid treatment: the design treatment flow is 5L/h-10L/h, the treatment flow can be adjusted, and the single maximum treatment capacity is 50L/h;
(3) the treatment requirements are as follows: the method has the advantages of having harmless treatment and research conditions of the combustible waste liquid, and meeting the requirements of waste liquid storage and supply, low-pressure incineration treatment, flue gas purification, temperature reduction and exhaust and the like.
As shown in fig. 1, the system for burning and purifying kerosene waste liquid of the present invention comprises a waste liquid storage unit 1, a waste liquid supply unit 2, a burning module, a flue gas purification and absorption module, a skid-mounted moving device 9 and an automatic control unit; waste liquid storage unit 1, waste liquid supply unit 2, burn the module, flue gas purification absorbs module and automatic control unit equipartition and arranges in sled dress mobile device 9 on, and waste liquid storage unit 1, waste liquid supply unit 2, burn the module, flue gas purification absorbs the module and is linked together in proper order.
In the system for incinerating and purifying the kerosene waste liquid, the incineration module comprises a combustion unit 3 and an incineration unit 4; the flue gas purification and absorption module comprises a circulating liquid storage tank 7, a flue gas purification and absorption unit 6 and a flue gas exhaust unit 8, and is used for carrying out secondary purification, temperature reduction and exhaust treatment on high-temperature flue gas generated by the incineration unit 4; the structure of each part is as follows:
1) waste liquid storage unit 1
The waste liquid storage unit 1 is used for providing a storage environment for single kerosene waste liquid treatment, the waste liquid storage unit 1 comprises a waste liquid storage tank 13, a waste liquid filling pipeline 16 communicated with the waste liquid storage tank 13, a waste liquid filling valve 11 and a filling filter 12 which are arranged on the waste liquid filling pipeline 16, and the kerosene waste liquid to be treated is stored in the waste liquid storage tank 13 after passing through the waste liquid filling valve 11 and the filling filter 12.
The top of the waste liquid storage tank 13 is provided with a vent valve 14 for feeding the kerosene waste liquid into the waste liquid storage tank 13 or ventilating the kerosene waste liquid into the waste liquid storage tank 13 in the incineration treatment process.
The bottom of the waste liquid storage tank 13 is provided with a first blow-down valve 15 for discharging the kerosene waste liquid in the waste liquid storage tank 13 or cleaning the waste liquid storage tank 13.
The waste liquid storage tank 13 adopts a normal-pressure closed stainless steel container structure, and reserves basic functions of kerosene waste liquid filling, storage, supply, exhaust, pollution discharge and the like; the effective volume of the waste liquid storage tank 13 is designed according to that the single waste liquid treatment is not less than 50L, and the storage and supply conditions of single 50L kerosene waste liquid are provided.
2) Waste liquid supply unit 2
The waste liquid supply unit 2 is used for providing stable waste liquid supply, filtration, reverse tempering prevention and other conditions for the incineration module.
The waste liquid supply unit 2 includes a supply pipe 21 having one end communicating with the bottom of the waste liquid tank 13, and a supply valve 22, a supply filter 23, and a check valve 24 sequentially disposed on the supply pipe 21, and the supply valve 22 is disposed adjacent to the waste liquid tank 13. The supply pipeline 21 is made of stainless steel material to ensure the compatibility of the kerosene waste liquid and the pipeline material; the specifications of the supply pipe 21, the supply valve 22, the supply filter 23, and the check valve 24 in this embodiment are determined according to the maximum supply flow rate of 10L/h, so that the flow resistance, the filtration accuracy, and the like of the system all meet the supply index requirements of the rear-end combustor 32.
3) Combustion unit 3
The combustion unit 3 includes a burner 32, and a combustion fan 31 and an oil pump 33 located outside the burner 32, an inlet of the burner 32 communicates with the other end of the supply duct 21 through the oil pump 33, and the combustion fan 31 is connected to a power input of the burner 32. The burner 32 is used for continuously and stably burning the kerosene waste liquid, an outlet of the burner 32 is provided with an installation interface used for being connected with the rear-end incinerator 41, and the burning flame and the smoke of the burner 32 are all discharged into the incinerator 41.
The combustion unit 3 has an automatic ignition function in the combustion process; the burner 32 is connected with the combustion fan 31 to form an oxygen supply system; the burner 32 is connected with the waste liquid storage tank 13 through a supply pipeline 21 to form an oil supply system; the burner 32 forms the kerosene waste liquid to be burnt under the working condition of proper mixing ratio by adjusting the parameters of the combustion fan 31 and the oil pump 33, so that the effective burning and decomposition of the kerosene waste liquid are ensured, and the highest burning temperature is formed; the continuous adjusting function of the combustion fan 31 and the oil pump 33 is fed back by a measuring signal of the control unit, so that the combustor 32 works in a kerosene waste liquid incineration processing interval of 5L/h-10L/h.
4) Incineration unit 4
The incineration unit 4 is used for providing a low-pressure working environment for high-temperature incineration, sufficient decomposition and harmless smoke generation of the kerosene waste liquid.
As shown in fig. 3, the incineration unit 4 includes an incinerator 41, an oxygen supply fan 42, a temperature sensor 45, and a flame detection sensor 46; the incinerator 41 is a cylindrical structure with an opening at the middle part of one end, the burner 32 is fixed at the opening at the middle part of one end of the incinerator 41 through a flange, the flame outlet of the burner 32 faces the inner cavity of the incinerator 41, and a sealed furnace chamber 47 is formed between the two;
the incinerator 41 is made of stainless steel, the inner wall of the incinerator 41 is provided with a refractory material, and the outer wall of the incinerator 41 is coated with a heat insulation material; the volume size of the incinerator 41 can ensure that the retention time of 2-3 s can be realized under the maximum flow velocity of the flue gas; a flame detection sensor 46 and a temperature sensor 45 are arranged on the side wall of the incinerator 41 and are respectively used for acquiring the combustion state and temperature parameters in the incinerator 41 in real time; the bottom surface of the incinerator 41 is provided with two oxygen supplementing interfaces 43, wherein one oxygen supplementing interface 43 is positioned in the middle of the bottom surface of the incinerator 41, and the other oxygen supplementing interface 43 is positioned between the combustor 32 and the oxygen supplementing interface 43 positioned in the middle of the bottom surface; the oxygen supplementing fan 42 is connected with two oxygen supplementing interfaces 43 respectively.
The fire-resistant temperature of the fire-resistant material on the inner wall of the incinerator 41 is not less than 1000 ℃, air is supplemented for the furnace chamber 47 for the second time through the oxygen supplementing fan 42, the temperature of the internal combustion air of the furnace chamber 47 is ensured to be 800-850 ℃ after the oxygen supplementing quantity and the air heat capacity are mixed, and the kerosene waste liquid is decomposed into harmless substances in a high-temperature state.
The incinerator 41 is also provided with a visual observation window, a smoke outlet 48 and a blasting valve; the smoke outlet 48 is in a suction working state, is influenced by the suction action of the rear end smoke exhaust fan 83, and continuously exhausts the smoke subjected to pyrolysis out of the furnace chamber 47; the visual observation window is positioned at the axial line position of the side wall of the incinerator 41 and is made of temperature-resistant transparent glass material, and the visual window is radially opposite to the flame outlet of the combustor; the explosion valve 44 is disposed at the axial position of the sidewall of the incinerator 41, the installation interface of the explosion valve 44 points to the right upper side for pressure relief and safety protection of the incinerator 41 during emergency or abnormal combustion, and the explosion valve 44 is used for preventing the emergency pressure relief of the incinerator 41 during abnormal rear end exhaust.
5) Circulating liquid storage tank 7
The circulating liquid storage tank 7 is used for storing absorption liquid 73 for purifying and cooling the flue gas, and the circulating liquid storage tank 7 is of a box-type structure made of stainless steel; the volume of the circulating liquid storage tank 7 is considered according to the single maximum treatment capacity of the kerosene waste liquid of 50L/h, the 800 ℃ high-temperature flue gas is cooled to 60 ℃ and then exhausted, and the size of the circulating liquid storage tank 7 and the proportioning concentration of the absorption liquid 73 are determined.
A washing tower installation interface 77 and an absorption liquid filling interface are arranged at the upper part of the circulating liquid storage tank 7, the absorption liquid filling interface is connected with a liquid adding pipeline 78, an absorption liquid filling valve 71 and an absorption liquid filter 72 are arranged on the liquid adding pipeline 78, and the absorption liquid filter 72 is arranged close to the circulating liquid storage tank 7; the lower part of the circulating liquid storage tank 7 is provided with a liquid drainage interface which is connected with a liquid drainage pipeline 79, and the liquid drainage pipeline 79 is provided with a second blow-down valve 76;
a liquid level meter 74 is arranged on one side wall of the circulating liquid storage tank 7, and a liquid supply interface 75 is arranged on the upper part of the other side wall.
6) Flue gas purifying and absorbing unit 6
As shown in fig. 4, the flue gas cleaning absorption unit 6 includes a scrubber 61 (quenching tower), a spray mechanism 63, a liquid supply pipe 64, and a booster pump 65.
The washing tower 61 is used for absorbing nitrogen oxides in the high-temperature flue gas and reducing the temperature of the flue gas; the washing tower 61 is of a vertical cylindrical stainless steel structure, the washing tower 61 is installed on a washing tower installation interface 77 of the circulating liquid storage tank 7, and the bottom of the washing tower 61 is communicated with the inside of the circulating liquid storage tank 7; the top of the washing tower 61 is provided with a flue gas inlet 62, the flue gas inlet 62 is connected with one end of the first exhaust pipe 5, and the other end of the first exhaust pipe 5 is connected with the smoke outlet 48 of the incinerator 41; the lower side wall of the scrubber tower 61 is provided with a flue gas interface 66 for connecting a second flue gas duct 81.
The spraying mechanism 63 is positioned at the top end inside the washing tower 61, one end of the liquid supply pipeline 64 is connected with a liquid supply interface 75 on the side wall of the circulating liquid storage tank 7, the other end of the liquid supply pipeline passes through the washing tower 61 and is communicated with the spraying mechanism 63, and the booster pump 65 is arranged on the liquid supply pipeline 64.
High-temperature flue gas generated by the incinerator 41 enters the washing tower 61 through the first flue gas discharge pipeline 5, meets spraying cooling liquid emitted by the spraying mechanism 63 at the top of the washing tower 61, and flows downwards from the top of the washing tower 61 together, the high-temperature flue gas is purified and cooled in the flowing process, then is discharged through a flue gas discharge interface 66 on the side wall of the washing tower 61, meanwhile, the cooling liquid returns to the circulating liquid storage tank 7 again in the downward flowing process, the cooling liquid is pumped by the booster pump 65 to be circularly supplied to the top spraying mechanism 63, and an atomized absorption and cooling environment is formed in the washing tower 61.
7) Flue gas discharging unit 8
The smoke exhaust unit 8 comprises a second smoke exhaust pipeline 81, and a steam-water separator 82, a smoke exhaust fan 83 and a chimney 84 which are sequentially arranged on the second smoke exhaust pipeline 81, wherein the inlet of the second smoke exhaust pipeline 81 is connected with the smoke exhaust interface 66, the outlet of the second smoke exhaust pipeline 81 is communicated with the atmosphere, and the steam-water separator 82 is arranged close to the smoke exhaust interface 66. All the connecting parts of the embodiment can be in flange form to realize sealing connection.
8) Automatic control unit
The automatic control unit is started by adopting a PLC module in a one-touch mode to realize the automatic control of the kerosene burning treatment process, the automatic control unit acquires a temperature sensor 45, a flame detection sensor 46 and a smoke emission index in real time, abnormal working mode programs are safely locked and suddenly stopped, the kerosene burning rate is related to the temperature of the furnace chamber 47, the exhaust index is related to the oxygen supplementing fan 42 and spraying purification, the temperature range of the furnace chamber 47 is controlled to be 800-850 ℃, the exhaust temperature is less than 60 ℃, and the chamber pressure of the burning furnace is lower than the atmospheric pressure by about 3-5 kPa.
9) Skid-mounted moving device 9
The waste liquid storage tank 13, the combustor 32, the incinerator 41, the circulating liquid storage tank 7, the washing tower 61, the smoke exhaust unit 8 and the automatic control unit are all integrated on the skid-mounted mobile device 9.
As shown in fig. 2, the skid-mounted moving device 9 includes a skid-mounted platform 91, a roller 92, an equipment base 93 and a driving member; the skid-mounted platform 91 meets the requirements of stacking, fixing, bearing, arrangement, connection, disassembly, hoisting and transportation and the like of each process device;
the gyro wheel 92 sets up the lower surface at sled dress platform 91, and the driving piece is installed on sled dress platform 91. The skid-mounted platform 91 provides necessary bearing and mounting conditions for the waste liquid storage tank 13, the combustor 32, the incinerator 41, the circulating liquid storage tank 7, the washing tower 61, the exhaust unit 8 and the automatic control unit, the skid-mounted moving device 9 can move under certain conditions of the whole waste liquid incineration and purification treatment system, the skid-mounted moving device can be selected according to design requirements and treatment scale capacity, and the driving piece is designed into an electric driving moving mode or a manual push-pull mode; the driving member of this embodiment is a manual push-pull type, specifically, a push-pull handle 94.
Circulation liquid reserve tank 7 of this embodiment sets up on sled dress platform 91, and waste liquid storage tank 13, burning furnace 41, scrubbing tower 61 set up on circulation liquid reserve tank 7 side by side, and combustor 32 and burning furnace 41 one end coaxial coupling, and discharge fume unit 8 sets up on scrubbing tower 61, and booster pump 65 passes through equipment base 93 and installs on sled dress platform 91. In the embodiment, an integrated skid-mounted moving device structure is adopted, and a layered arrangement and linear arrangement form is adopted according to an incineration process and a spraying absorption process, so that the process treatment of the efficient thermal decomposition of the waste liquid is met, and the requirements of the whole process of high-temperature flue gas purification absorption and cooling are met; and the system integration level is high, and the miniaturization is realized.
The combustion fan 31 provided in the oxygenating fan 42 and the burner 32 of the present embodiment supplies air into the incinerator 41; the incinerator 41 and the booster pump 65 respectively supply high-temperature flue gas and absorption liquid 73 to the washing tower 61, the washing tower 61 is sprayed with an atomization environment to mix the flue gas and the absorption liquid 73 to form a sufficient contact condition, after the gas-liquid mixture exchanges heat and is purified in flowing along the washing tower 61, the flue gas is discharged by the smoke exhaust fan 83, and the absorption liquid 73 is heated and then returns to the bottom circulating water tank; the burner 32 sets parameters according to the rated air-fuel ratio of 17.75 about the normal pressure operation of kerosene, the air excess supply is controlled at 10% -15%, and the oxygen supplementing air flow of the incinerator 41 is determined by heat exchange calculation according to the incineration temperature of 800-850 ℃.
The integrated waste liquid supply of this embodiment incineration and purification treatment system, waste liquid burning, flue gas pyrolysis, gas cleaning, flue gas cooling, flue gas discharge processes up to standard can satisfy the incineration pyrolysis and the purification treatment requirement of kerosene waste liquid.
The principle of the kerosene waste liquid incineration and purification treatment system of the embodiment is as follows: the kerosene waste liquid in the waste liquid storage tank 13 firstly enters the burner 32, the burner 32 utilizes a pump, a fan and an ignition system to realize the continuous and stable combustion of the kerosene waste liquid, the combusted smoke is stably conveyed into the closed incinerator 41, the oxygen supplementing fan 42 and the smoke exhaust fan 83 supply and exhaust air according to the rated flow, so that a low-pressure and high-temperature combustion working environment is formed in the incinerator 41, the designed waste liquid combustion air-fuel ratio and the size of the furnace chamber 47 ensure the detention time of the full pyrolysis of high-temperature gas, the air and the kerosene waste liquid (toxic and harmful substances in the waste liquid) in the incinerator 41 are in the states of oxygen enrichment, high temperature and low pressure, the air and the kerosene waste liquid are fully combusted and effectively decomposed into smoke (carbon dioxide and water) without harmful substances, the reasonable oxygen supplementing and exhaust ratio control and combustion temperature control are carried out through the oxygen supplementing fan 42, and the safe combustion of the kerosene waste liquid is ensured, And stabilizing the decomposition process, and finally discharging the flue gas after secondary purification and temperature reduction by a back-end washing tower, wherein the exhaust indexes meet the relevant requirements of the Integrated emission Standard of atmospheric pollutants and the pollution control Standard of hazardous waste incineration.
The working process of the kerosene waste liquid incineration and purification treatment system comprises the following specific processes:
(1) preparing a system: collecting kerosene waste liquid, filling and storing the kerosene waste liquid in a waste liquid storage tank 13, and checking whether the states of a waste liquid storage unit 1 and a waste liquid supply unit 2 are normal; the detection incineration module, the smoke purification and absorption module, the pipeline and the pump valve device are all reliably connected and in normal state; the power supply and signal parameter measuring state of the control unit is normal;
(2) debugging and verifying: the method comprises the steps of sequentially detecting states of a water path, a gas path, a liquid path system and a control unit; firstly, detecting the working state of the flue gas purification absorption module, and starting a booster pump 65 to verify that the state of the spraying mechanism 63 is normal; secondly, starting the smoke exhaust fan 83 and the oxygen supplementing fan 42, and detecting that the smoke formation and the discharge channel are well sealed and the working state of the equipment is normal; sequentially determining that the states of the waste liquid supply and the incineration path valve are normal, the states of the temperature sensor 45 and the flame detection sensor 46 on the incinerator 41 are normal, controlling the system switch and indicating the states to be normal, and starting the incinerator system test by the combustor 32 in a short time; and finally, after the test is finished, the system can be checked to be normal and then formal waste liquid incineration treatment can be carried out.
(3) Waste liquid incineration and purification treatment: after the system preparation and the debugging and verification are completed, the burning and purification treatment of the kerosene waste liquid is carried out according to the process flow shown in fig. 5, the booster pump 65 is sequentially started to enable the spraying mechanism 63 to absorb and enable the cooling system to work, the smoke exhaust fan 83 and the oxygen supplementing fan 42 are started to enable the burning smoke system to work, the combustor 32 is started to start the burning and purification treatment process of the kerosene waste liquid, the control unit continuously collects the flame detection sensor 46 and the temperature sensor 45 to obtain flame and temperature parameters, the working state of the combustor 32 is adjusted in real time according to the flame and temperature parameters, and the exhaust parameters after the kerosene waste liquid is burned are ensured to meet the emission requirements; after the waste liquid treatment is finished, the igniter, the oxygen supplementing fan 42, the smoke exhaust fan 83, the booster pump 65 and other equipment of the combustion machine are closed in sequence according to a certain time sequence, so that the safety of incineration treatment process equipment and the controllability of a process are ensured.
(4) And (3) treatment after test: after the kerosene waste liquid treatment is completed, the supply valves 22, the equipment, the power supply and the like are closed, whether the absorption liquid 73 is replaced and discharged is judged according to the condition of the absorption liquid 73 in the circulating water tank, and the equipment is protected when the system is not used for a long time.
The system of the embodiment is used in the safe treatment and harmless treatment process of the liquid waste liquid generated in the production of the igniter for the liquid rocket engine. In the kerosene waste liquid incineration and purification treatment system, a waste liquid supply unit provides a closed and stable kerosene output condition for the incineration system, an incineration module provides a closed and low-pressure kerosene combustion environment, so that kerosene is completely combusted and decomposed into harmless substances in a high-temperature, high-oxygen and proper space, and a flue gas purification and absorption module performs high-temperature rapid cooling and secondary purification and absorption to ensure that the kerosene achieves harmless emission requirements after incineration and purification treatment. In the working process of supplying, igniting, stably burning, purifying, absorbing and cooling the waste kerosene liquid, the automatic control unit forms a negative pressure working environment by adjusting the air distribution rate, controls the burning speed by the temperature of the 41 cavities of the burning furnace, controls the exhaust temperature by the flow of the spraying liquid, and obtains a proper working environment interval for burning and purifying the kerosene, so that the established kerosene burning and purifying treatment system can meet the exhaust index requirement after the waste liquid is burned and purified.
The system of the embodiment can specifically solve the problem that the waste liquid of the igniter for the liquid rocket engine in the production, filling and recovery processes can not be treated when the igniter waste liquid is spontaneously combusted, and the igniter is mixed into kerosene according to a proportion for treating the waste liquid, so that the problem of treating the liquid medium which is easily spontaneously combusted by the igniter can be effectively solved; the system of the embodiment is used for recycling waste liquid of liquid oxygen kerosene engine igniting agent, kerosene and other media, safely processing waste liquid generated in the links of production, filling, recycling and the like of the liquid rocket engine igniting agent, and processing igniting agent products and production intermediates which belong to liquid organic matters (containing toxic and harmful substances) which are extremely easy to spontaneously combust under normal pressure.
In the embodiment, a chemical pyrolysis incineration process is utilized to establish a treatment system for kerosene waste liquid incineration and flue gas purification, a liquid path system for supplying the kerosene waste liquid, a closed low-pressure incineration gas path system and a water path system for spraying, purifying and cooling absorption liquid 73 are organically combined, so that the harmless treatment of the kerosene waste liquid is realized, and the treatment system can be used for the technical research of treating the generated kerosene waste liquid by using kerosene media, an ignition agent and the like for a liquid rocket engine;
this embodiment burns the kerosene waste liquid, purify (waste liquid storage unit 1, waste liquid supply unit 2, burn module and gas cleaning absorption module) and integrate in sled dress mobile device 9's sled dress platform 91, adopt the stratiform to stack to arrange and linear incineration process combines, realize the high-efficient thermal decomposition of kerosene waste liquid in the finite space, make the flue gas discharge up to standard, sled dress mobile device 9 has realized that the kerosene waste liquid uses fast in the place, safety, innocent treatment, dangerous waste liquid treatment efficiency has been improved, reduce waste liquid storage or improper treatment to environment secondary pollution's risk.
The above description is only for the preferred embodiment of the present invention and does not limit the technical solution of the present invention, and any modifications made by those skilled in the art based on the main technical idea of the present invention belong to the technical scope of the present invention.
Claims (10)
1. The utility model provides a kerosene waste liquid burns and purification treatment system which characterized in that: comprises a waste liquid storage unit (1), a waste liquid supply unit (2), an incineration module and a flue gas purification and absorption module which are connected in sequence;
the waste liquid storage unit (1) comprises a waste liquid storage tank (13) and a waste liquid filling valve (11) communicated with the waste liquid storage tank (13);
the waste liquid supply unit (2) comprises a supply pipeline (21) and a check valve (24), wherein one end of the supply pipeline (21) is communicated with the bottom of the waste liquid storage tank (13);
the incineration module comprises a combustion unit (3) and an incineration unit (4);
the combustion unit (3) comprises a combustor (32), and a combustion fan (31) and an oil pump (33) which are positioned outside the combustor (32), wherein the inlet of the combustor (32) is communicated with the other end of the supply pipeline (21) through the oil pump (33), and the combustion fan (31) is connected with the power input of the combustor (32);
the incineration unit (4) comprises an incinerator (41) and an oxygen supplementing fan (42) positioned on the outer side of the incinerator (41), the combustor (32) is arranged in the middle of one end of the incinerator (41), a sealed furnace chamber (47) is formed between the incinerator and the combustor (41), and a flame outlet of the combustor (32) faces to the inner cavity of the incinerator (41); the oxygen supplementing fan (42) is communicated with the furnace chamber (47); a temperature sensor (45) and a flame detection sensor (46) are arranged on the incinerator (41);
the flue gas purification and absorption module comprises a circulating liquid storage tank (7), a flue gas purification and absorption unit (6) and a flue gas discharge unit (8);
an absorption liquid (73) is arranged in the circulating liquid storage tank (7);
the flue gas purification and absorption unit (6) comprises a washing tower (61), a spraying mechanism (63), a liquid supply pipeline (64) and a booster pump (65); the washing tower (61) is positioned above the circulating liquid storage tank (7), the top of the washing tower (61) is communicated with the smoke outlet of the incinerator (41), and the bottom of the washing tower is communicated with the circulating liquid storage tank (7); the spraying mechanism (63) is positioned at the top end inside the washing tower (61), two ends of the liquid supply pipeline (64) are respectively communicated with the circulating liquid storage tank (7) and the spraying mechanism (63), and the booster pump (65) is arranged on the liquid supply pipeline (64);
one end of the smoke exhaust unit (8) is communicated with the bottom of the washing tower (61), and the other end of the smoke exhaust unit is communicated with the atmosphere.
2. The kerosene waste liquid incineration and purification treatment system according to claim 1, wherein: the device is characterized by further comprising a skid-mounted moving device (9), wherein the waste liquid storage tank (13), the combustor (32), the incinerator (41), the circulating liquid storage tank (7), the washing tower (61) and the smoke exhaust unit (8) are integrated on the skid-mounted moving device (9).
3. The kerosene waste liquid incineration and purification treatment system according to claim 2, wherein: the skid-mounted moving device (9) comprises a skid-mounted platform (91) with a roller (92) and a driving piece for driving the skid-mounted platform (91) to move;
the circulating liquid storage tank (7) is arranged on a skid-mounted platform (91), the waste liquid storage tank (13), the incinerator (41) and the washing tower (61) are all arranged on the circulating liquid storage tank (7), the combustor (32) is coaxially connected with the incinerator (41), and the smoke exhaust unit (8) is arranged on the washing tower (61).
4. The kerosene waste liquid incineration and purification treatment system according to any one of claims 1 to 3, wherein: a smoke exhaust interface (66) is arranged at the lower part of the side wall of the washing tower (61);
the smoke exhaust unit (8) comprises a second smoke exhaust pipeline (81), and a steam-water separator (82), a smoke exhaust fan (83) and a chimney (84) which are sequentially arranged on the second smoke exhaust pipeline (81), wherein the inlet of the second smoke exhaust pipeline (81) is connected with a smoke exhaust interface (66), the outlet of the second smoke exhaust pipeline is communicated with the atmosphere, and the steam-water separator (82) is arranged close to the smoke exhaust interface (66).
5. The kerosene waste liquid incineration and purification treatment system according to claim 4, wherein: the waste liquid storage unit (1) further comprises a filling filter (12), a vent valve (14) and a first drain valve (15);
the filling filter (12) is positioned on a pipeline between the waste liquid filling valve (11) and the waste liquid storage tank (13), the vent valve (14) is communicated with the top of the waste liquid storage tank (13), and the first blow-down valve (15) is communicated with the bottom of the waste liquid storage tank (13).
6. The kerosene waste liquid incineration and purification treatment system according to claim 5, wherein: the supply pipeline (21) is also provided with a supply valve (22) and a supply filter (23) which are positioned between the waste liquid storage tank (13) and the check valve (24), and the supply filter (23) is arranged close to the check valve (24).
7. The kerosene waste liquid incineration and purification treatment system according to claim 6, wherein: the incinerator (41) is of a cylindrical structure with an opening at the middle part of one end, and the burner (32) is arranged at the opening of the incinerator (41);
the incinerator (41) is made of stainless steel, the inner wall of the incinerator is provided with a refractory material, and the outer wall of the incinerator is coated with a heat insulation material;
a visual observation window and an explosion valve (44) are arranged on the incinerator (41), the visual observation window is made of a temperature-resistant transparent glass material, and the visual observation window is radially opposite to a flame outlet of the combustor; the explosion valve (44) is used for pressure relief and safety protection of the incinerator (41) during emergency or abnormal combustion.
8. The kerosene waste liquid incineration and purification treatment system according to claim 7, wherein: a washing tower installation interface (77) and an absorption liquid filling interface are arranged at the upper part of the circulating liquid storage tank (7), the absorption liquid filling interface is connected with a liquid filling pipeline (78), an absorption liquid filling valve (71) and an absorption liquid filter (72) are arranged on the liquid filling pipeline (78), and the absorption liquid filter (72) is arranged close to the circulating liquid storage tank (7);
a liquid drainage interface is arranged at the bottom of the circulating liquid storage tank (7), the liquid drainage interface is connected with a liquid drainage pipeline (79), and a second blow-down valve (76) is arranged on the liquid drainage pipeline (79);
and a liquid level meter (74) and a liquid supply interface (75) connected with a liquid supply pipeline (64) are arranged on the side wall of the circulating liquid storage tank (7).
9. The kerosene waste liquid incineration and purification treatment system according to claim 7, wherein: the bottom surface of the incinerator (41) is provided with two oxygen supplementing interfaces (43) which are respectively communicated with the oxygen supplementing fan (42), wherein one oxygen supplementing interface (43) is positioned in the middle of the bottom surface of the incinerator (41), and the other oxygen supplementing interface (43) is positioned between the combustor (32) and the oxygen supplementing interface (43) in the middle of the bottom surface.
10. The kerosene waste liquid incineration and purification treatment system according to claim 9, wherein: the top of the washing tower (61) is communicated with a smoke outlet of the incinerator (41) through a first smoke exhaust pipeline (5);
the washing tower (61) is of a vertical cylindrical stainless steel structure, the top of the washing tower (61) is provided with a flue gas inlet (62) used for being connected with the first smoke exhaust pipeline (5), and the side wall of the lower part of the washing tower is provided with a smoke exhaust interface (66) used for being connected with the second smoke exhaust pipeline (81).
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| CN202111443728.8A CN114383143A (en) | 2021-11-30 | 2021-11-30 | Kerosene waste liquid burns and purification treatment system |
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| CN102305410A (en) * | 2011-09-02 | 2012-01-04 | 北京航天动力研究所 | Method and system for carrying out incineration on high N-S-based saliferous organic waste liquor and carrying out purification treatment on tail gas |
| CN103868077A (en) * | 2012-12-10 | 2014-06-18 | 北京航天动力研究所 | Method and system for incinerating iodine-containing organic waste liquor, purifying and treating tail gas |
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