CN209279165U - System containing organic materialization work abraum salt is handled using self- propagating pyrolysismethod - Google Patents
System containing organic materialization work abraum salt is handled using self- propagating pyrolysismethod Download PDFInfo
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- CN209279165U CN209279165U CN201822238098.0U CN201822238098U CN209279165U CN 209279165 U CN209279165 U CN 209279165U CN 201822238098 U CN201822238098 U CN 201822238098U CN 209279165 U CN209279165 U CN 209279165U
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Abstract
The utility model relates to field of solid waste treatment, and in particular to handle the system containing organic materialization work abraum salt using self- propagating pyrolysismethod.The system successively includes pretreatment system, self- propagating pyrolysis installation and flue gas purification system, self- propagating pyrolysis installation is Verticle chained band structure, it is also equipped with the smoke circulating system that draught hood, exhaust column and blower are constituted, pass through the setting to air draft speed, gas flow rate and gas spray head, it is stably controlled the temperature of high-temperature flue gas, so that the uniformity of temperature profile in the bed of material, gradient is small, so that being less prone to melting phenomenon and finished product salt being made to agglomerate, simultaneously, self- propagating pyrolysis installation can make full use of thermal energy, be suitble to the mass disposal of a variety of abraum salts.
Description
Technical field
The utility model relates to field of solid waste treatment, and especially the high saliferous of chemical field generation is containing organic matter
Waste processing, and in particular to the system containing organic materialization work abraum salt is handled using self- propagating pyrolysismethod.
Background technique
Contain various noxious materials in chemical industry abraum salt, it is the most serious with organic matter harm, in face of increasingly stringent environmental protection
Policy, the processing of abraum salt and the problem of be manipulated so growing interest.Nacl had both been important industrial chemicals and national strategy
Resource recycles chemical industry abraum salt as raw material of industry salt, can not only eliminate its pollution to environment, can also make full use of
Salt resource realizes by-product recycling and circular economy.
Currently, the method for processing chemical industry abraum salt is mainly the following processing method:
Desalinization of soil by flooding or leaching method: by abraum salt water or organic solvent washing, the impurity in dry salt is washed away as far as possible, treated, and dry salt is used for
Join alkali industry, this method is relatively adapted to the dry salt of the single by-product of impurity component, it the shortcomings that be that washing water or organic solvent exist
The problem of secondary pollutions such as reprocessing；In addition impurity content is often unstable in the dry salt of by-product, the dosage of slurry or solvent
More difficult to control, impurity is difficult to clean, and is not easy to realize industrialization.
Method of Soda processed: after saturated brine solution is made in abraum salt, being passed through ammonia under certain condition, carbon dioxide or directly plus
Enter solid ammonium bicarbonate, after reacting a period of time, solid sodium bicarbonate is precipitated in crystallization, and soda ash is made in pyrolytic after separating, washing, point
From the main containing ammonium chloride of mother liquor, adds after ammonium chloride is precipitated in dry salt freezing and be recycled to alkaline process.The key of this method is to improve
Reaction efficiency solves influence of the organic impurities to product quality in dry salt.The complex treatment process, the more difficult control of reaction efficiency
System, the stability for the product quality produced need to be further improved.To realize the industrialized production of this method, it is still necessary into one
Walk replenishment of process route.
High-temperature process method: abraum salt is subjected to high-temperature process, the organic impurities contained in dry salt is made to resolve into gas at high temperature
Body, to achieve the purpose that remove organic impurities.The key of this method is the selection of resolving device.The country is according to associated row industry
Interior investigation and analysis mainly carry out resolution process using Thermal Equipments such as rotary kiln, fluidized bed furnaces at present, but occur in the process of running
Relatively it is difficult to resolve the certainly dry salt industrial problems such as ring formation agglomeration, therefore industrialization relatively difficult to achieve at high temperature.
In above-mentioned three kinds of methods, wherein high-temperature process method is the most simple and easy, but its there are still key technical problems are as follows:
Abraum salt agglomeration problems in a high temperauture environment how are prevented, agglomerates in a high temperauture environment, organic matter is embedded in agglomeration, make its hardly possible
To be exposed in high temperature, and then it is difficult to remove, prevent the TOC in finished product salt is from up to standard, meanwhile, finished product salt after treatment
In also containing a large amount of melting salt block, and then finished product salt is not able to satisfy the requirement of industrial salt, can not reach ion film caustic soda
With the requirement of salt.
Summary of the invention
To solve the above problems, the utility model, which provides a kind of handle using self- propagating pyrolysismethod, contains organic materialization work abraum salt
Method, the obtained finished product salt of this method processing abraum salt without vitreous clinker phenomenon, and wherein TOC content down to 10.00ppm.
Method containing organic materialization work abraum salt is handled using self- propagating pyrolysismethod, comprising the following steps:
(1) according to the particle diameter distribution of abraum salt, following either type is selected to be pre-processed:
A, when the partial size of 5% or more abraum salt is greater than or equal to Ymm, the abraum salt by partial size more than or equal to Ymm is broken into
Granulated salt, partial size X-Ymm；
B, when the partial size of 95% or more abraum salt is less than Ymm, using balling-up mode, abraum salt is caused into ball, partial size X-
Ymm；
C, when the partial size of abraum salt not in a and b in the particle size range of abraum salt when, without processing；
Wherein, 1mm≤X≤5mm, 15mm≤Y≤40mm；
(2) following distributing mode corresponding with pretreatment mode is selected, uses distributing device in self- propagating pyrolysis installation
Cloth:
It a, then will be remaining using part or all of granulated salt as on the chain band below the distributing device that grate-layer material is laid on
Abraum salt, which is laid in grate-layer material, forms the bed of material；
B, it using ball made of balling-up mode, is laid immediately on the chain band below distributing device and forms the bed of material；
C, untreated abraum salt is laid immediately on the chain band below distributing device and forms the bed of material；
(3) self- propagating pyrolysis processing:
In the pyrolysis section of self- propagating pyrolysis installation, ignition is carried out using combustion gas, burned flame is not directly contacted with material
Layer, uses negative pressure exhausting mode to control negative pressure as 200-5000Pa, and the high-temperature flue gas for generating burning is held by self- propagating mode
It is continuous that heat is transferred to whole bed of materials from bed of material surface, and the temperature for controlling high-temperature flue gas is 100-1200 DEG C, passes through self- propagating
It is gaseous compound that mode, which is pyrolyzed the organic matter in the bed of material,；
(4) bed of material after being pyrolyzed passes through the cooling section of self- propagating pyrolysis installation, and bed of material cooling obtains finished product salt；
(5) fume treatment: while pyrolysis processing, the flue gas with gaseous compound is passed through gas cleaning processing system
System is dusted flue gas, the processing of desulphurization and denitration, VOCS adsorption cleaning.
Pretreatment in the above method is suitable for the chemical industry abraum salt of various particle diameter distributions, wherein the value of X, Y and the kind of salt
The factors such as class, pyrolysis temperature are related, and this method is controlled using self- propagating pyrolysis and temperature, so that abraum salt is in the state not melted
Under, the organic matter in chemical industry abraum salt is decomposed into gaseous compound such as carbon dioxide, sulfur dioxide, titanium dioxide using high-temperature flue gas
Then nitrogen and vapor etc. enter smoke processing system, point therein containing the molecule of N, S and other pollution environment with flue gas
Son is absorbed by smoke processing system, and the organic matter in chemical industry abraum salt is efficiently separated and handled.
When for different types of chemical industry abraum salt, the negative pressure and temperature of pyrolysis installation are different, based on processing sodium chloride
When wanting the chlorine industry abraum salt and the dry salt of polyphenylene sulfide by-product of ingredient, the negative pressure of pyrolysis installation is preferably controlled to 400~3500Pa,
Pyrolysis temperature control is 600~900 DEG C.
Preferably, the grate-layer material with a thickness of 2~15mm, thickness of feed layer is 100~700mm.
Preferably, the time of the self- propagating pyrolysis processing is 10~180min.
More preferably, the thickness of feed layer is 200~600mm, time of the self- propagating pyrolysis processing is 30~
150min。
More preferably, air hole is provided on the bed of material, aperture is 4~16mm, and depth is 50~900mm, hole density
For 20-900/m2。
The utility model additionally provides the system suitable for the above method, and system design rationally, can make full use of heat
Incineration temperature can be adjusted with system negative regulation, reduce finished product salt vitreous clinker phenomenon.
System containing organic materialization work abraum salt is handled using self- propagating pyrolysismethod, successively includes pretreatment system, self- propagating
Pyrolysis installation and flue gas purification system, the self- propagating pyrolysis installation include chain with formula conveyer, the link conveyor by
Driving mechanism, sprocket wheel and matched with sprocket wheel chain belt composition；Link conveyor head upper is successively set along chain belt direction of travel
There are distributing device, upper housing；Upper housing is sealed chain belt upper space, and is successively divided into preheating section, pyrolysis section and cooling
Section, the preheating section are equipped with the import of pyrolysis section backflow flue gas；Multiple gas spray heads, the pyrolysis section are equipped in the pyrolysis section
It is equipped with the import of cooling section backflow flue gas；The cooling section is equipped with the import of preheating section backflow flue gas；The preheating section, pyrolysis section
It is evenly equipped with draught hood below the cavity formed with cooling section and chain belt, is connected with exhaust column and blower below the draught hood,
The flue gas that the preheating section generates successively enters cooling section, the heat through draught hood, exhaust column and preheating section backflow flue gas import
The partial fume that solution section generates successively enters preheating section through draught hood, exhaust column and pyrolysis section backflow flue gas import, generates
Another part flue gas is directly entered flue gas purification system, and the flue gas that the cooling section generates is successively through draught hood, exhaust column and cold
But the import of section backflow flue gas enters pyrolysis section.
In the use process of the system, when the partial size of 5% chemical industry abraum salt be greater than or equal to 30mm when, by abraum salt transport to
Screening machine, screens out the abraum salt that partial size is greater than 30, and the abraum salt by partial size greater than 30mm is transmitted to pulverizer, is crushed to partial size
For the granulated salt of 2~30mm, partial particulate salt is then transmitted to distributing device, first carries out cloth, grate-layer material is formed, then by it
His partial size is less than the salt and the common cloth of granulated salt of 30mm；When the partial size of 95% chemical industry abraum salt is less than 2mm, abraum salt is transmitted
To pelletizer, pelletizing is carried out to abraum salt, size controlling is then transmit to distributing device cloth in 2~12mm；When the partial size point of abraum salt
When cloth is unsatisfactory for any of the above-described condition, it is directly transferred to distributing device and carries out cloth.The bed of material that cloth is formed enters preheating with chain belt
Section, pyrolysis section generate flue gas and enter preheating section by pyrolysis section backflow flue gas import, from top to bottom preheat to the bed of material, bed of material temperature
Degree increases, and into pyrolysis section, flue-gas temperature, which reduces, becomes the flue gas that preheating section generates, and the flue gas that preheating section generates is drawn into exhausting
Then pipe enters cooling section with preheating section backflow flue gas import；After the bed of material enters pyrolysis section, pyrolysis section gas spray head jets out flames,
High-temperature flue gas is generated, high-temperature flue gas is pyrolyzed the organic matter in bed of material surface layer, and with the operation of blower, high-temperature flue gas is by bed of material surface layer
Bottom is spread to, the organic matter being gradually pyrolyzed in the bed of material, making its pyrolysis is the gas molecules such as carbon dioxide, sulfur dioxide and water,
The gas molecule of generation from top to bottom enters exhaust column with flue gas and forms the flue gas that pyrolysis section generates, the cigarette that partial thermal decomposition section generates
Gas enters preheating section with exhaust column；Another part pyrolysis section generates flue gas and enters flue gas purification system purification, at this point, in the bed of material
Salt and organic matter are efficiently separated, and it is cooling that the bed of material enters cooling section；In cooling section, the lower pre- thermogenetic flue gas of temperature with
Preheating section backflow flue gas import enters, and cools down to obtain finished product salt to the bed of material, flue gas heat up to be formed cooled flue gas with draught hood and
Exhaust column enters pyrolysis section, controls the temperature of pyrolysis section.
Above system is realized by the formation flue gas recirculation to draught hood, exhaust column and blower to the abundant of gas thermal energy
It utilizes, is passed through the realization of the factors such as the ratio of preheating section, the revolving speed of blower and gas flow to system by controlling pyrolysis smoke
Vacuum cavitations and temperature control so that the temperature gradient of pyrolysis section it is small and always be in stable state so that abraum salt is not easy
Vitreous clinker, sufficiently removing organic matter, stably and controllable due to pyrolysis temperature, which can realize to containing different organic matters
The processing of chemical industry abraum salt.
Preferably, the gas spray head is in horizontally disposed, can avoid flame and directly contacts with the bed of material.
Preferably, the loose dress of machinery for carrying out hole drilling ventilation to the bed of material is also furnished between the distributing device and upper housing
It sets.
Preferably, lower section is additionally provided with material recycle storehouse between the corresponding chain belt of the distributing device.
Preferably, the pretreatment system successively includes screening machine, pulverizer and nodulizer；The flue gas purification system according to
Secondary includes bag filter, devulcanizer, denitrator and VOCS absorber.
The above method uses self- propagating pyrolysismethod, and by the co- controlling to the bed of material, burning negative pressure and temperature, so that pure
Without vitreous clinker salt in the finished product salt of change, and then the organic matter in abraum salt is more thoroughly eliminated, so that finished product after purification
TOC in salt down to 10ppm, fully meet caustic soda ionic membrane with salt requirement, or be used for soda industry.
The beneficial effects of the utility model are as follows:
(1) the self- propagating pyrolysis system that the utility model uses can be made by regulation pyrolysis negative pressure and high-temperature flue-gas
The uniformity of temperature profile of the bed of material is obtained, gradient is small, so that in the case where not turning over materials, moreover it is possible to effectively abraum salt be avoided to be pyrolyzed
The phenomenon that journey generates melting and agglomerates；
(2) the self- propagating pyrolysis system that the utility model uses is taken out by draught hood, exhaust column and blower in bed of material bottom
Wind, so that high-temperature flue gas is directly entered flue gas purification system or enters other sections after reaching bottom from bed of material surface layer utilize its thermal energy
Afterwards, flue gas purification system is eventually entered into, the small molecular organic compounds generated in pyrolytic process are also most reentered with high-temperature flue gas
Purification system, whole system present negative pressure, once organic matter is pyrolyzed to form gaseous compound, will immediately with flue gas be pulled out with
Bed of material separation avoids gaseous compound and salt or other organic matters from carrying out secondary response (such as generating dioxin), realizes cleaning
Metaplasia produces, and reduces the load of purification system；
(3) the self- propagating pyrolysis system of the utility model is not added with any auxiliary material during handling abraum salt (binder can
It is completely broken down), pyrolysis organic matter can be realized, which will not introduce other metal ions and hardly degraded organic substance, in turn
Ensure the pure of finished product salt, in order to the processing of subsequent finished product salt；
(4) pyrolysis installation is in always under negative pressure burning state in the system of the utility model, the exhausting in pyrolysis installation
Cover, exhaust column and blower and chain with formula transporter form smoke circulating system, take full advantage of the thermal energy of combustion gas offer, may be used also
The control to the negative pressure and temperature of pyrolysis section is realized in control, the revolving speed of blower and the setting of gas flow moved towards by flue gas,
And then guarantee decomposing and efficiently separating completely for organic matter.
(5) pyrolysis installation used in the system of the utility model is Verticle chained band structure, and occupied area is small, and Verticle chained
Band structure can guarantee continual processing abraum salt, be suitable for large batch of abraum salt and handle, treatment effeciency is high.
Detailed description of the invention
Fig. 1 is to handle the system schematic containing organic materialization work abraum salt using self- propagating pyrolysismethod；
Fig. 2 is self- propagating pyrolysis installation structural schematic diagram.
In figure, 1- pretreatment system, 11- screening machine, 12- pulverizer, nodulizer；2- self- propagating pyrolysis installation, 21- chain with
Formula conveyer, 211- sprocket wheel, 212- chain belt, 22- distributing device, 23- upper housing, 231- preheating section, 232- pyrolysis section, 233- are cooling
Section, the import of 234- pyrolysis section backflow flue gas, the import of 235- cooling section backflow flue gas, 236- gas spray head, the reflux of 237- preheating section
Gas inlet, 24- draught hood, 25- exhaust column, 26- blower, 27 mechanical loosening apparatus, 28- material recycle storehouse；3- gas cleaning
System, 31- bag filter, 32- devulcanizer, 33- denitrator, 34-VOCS absorber.
Specific embodiment
The utility model is further detailed below in conjunction with drawings and examples.
Embodiment 1
Referring to Fig. 1, the system containing organic materialization work abraum salt is handled using self- propagating pyrolysismethod, successively includes pretreatment system
1, self- propagating pyrolysis installation 2 and flue gas purification system 3, the pretreatment system 1 successively include screening machine 11, pulverizer 12, at
Ball machine 13；The flue gas purification system 3 successively include bag filter 31, devulcanizer 32, denitrator 33 and VOCS absorber 34,
Referring to fig. 2, the self- propagating pyrolysis installation 2 includes chain with formula conveyer 21, the link conveyor 21 by driving mechanism (not
Mark), sprocket wheel 211 and matched with sprocket wheel 211 chain belt 212 composition；21 head upper of link conveyor is advanced along chain belt 212
Direction is successively arranged distributing device 22, upper housing 23；Upper housing 23 is sealed 212 upper space of chain belt, and is successively divided into
Preheating section 231, pyrolysis section 232 and cooling section 233, the preheating section 231 are equipped with pyrolysis section backflow flue gas import 234；It is described
Pyrolysis section 232 is equipped with cooling section backflow flue gas import 235, is additionally provided with multiple gas spray heads 236 in the pyrolysis section 232；Institute
Cooling section 233 is stated equipped with preheating section backflow flue gas import 237；The preheating section 231, pyrolysis section 232 and cooling section 233 with
It is evenly equipped with draught hood 24 below the cavity that chain belt 212 is formed, is connected with exhaust column 26 and blower below the draught hood 25
27, the pre- hot fume of generation of the preheating section 231 is successively through draught hood 25, exhaust column 26 and preheating section backflow flue gas import 237
Into cooling section 233, the partial thermal decomposition flue gas that the pyrolysis section 232 generates is successively through draught hood 25, exhaust column 26 and pyrolysis section
Backflow flue gas import 234 enters preheating section 231, and another part pyrolysis smoke generated is directly entered flue gas purification system 3, institute
The cooled flue gas for stating cooling section 233 passes sequentially through draught hood 25, exhaust column 26 and cooling section backflow flue gas import 235 and enters heat
Section 232 is solved, the mechanical loosening apparatus 27 for being punched to the bed of material is also furnished between the cloth 22 and upper housing 23.It is described
Lower section is additionally provided with material recycle storehouse 28 between the corresponding chain belt of distributing device 27.
In the use process of the system, when the partial size of 5% chemical industry abraum salt be greater than or equal to 30mm when, by abraum salt transport to
Screening machine 11, screens out the abraum salt that partial size is greater than 30mm, and the abraum salt by partial size greater than 30mm is transmitted to pulverizer 12, is crushed
The granulated salt for being 2~30mm to partial size, is then transmitted to distributing device 22 for granulated salt, first carries out cloth, forms grate-layer material, then
Other partial sizes are less than to the salt cloth of 30mm；When the partial size of 95% chemical industry abraum salt is less than 2mm, abraum salt is transmitted to pelletizer
13, pelletizing is carried out to abraum salt, size controlling is then transmit to 22 cloth of distributing device in 2~12mm；When abraum salt particle diameter distribution not
When meeting any of the above-described condition, it is directly transferred to distributing device 22 and carries out cloth.The bed of material that cloth is formed enters preheating section with chain belt
231, the flue gas that pyrolysis section generates enters preheating section 231 by pyrolysis section backflow flue gas import 234, from top to bottom carries out to the bed of material pre-
Heat, material layer temperature increases, and into pyrolysis section 232, flue-gas temperature, which reduces, becomes the pre- hot fume that preheating section generates, and preheating section generates
Flue gas be drawn into exhaust column 25 then with preheating section backflow flue gas import 237 enter cooling section 233；The bed of material enters pyrolysis section
After 232, fuel nozzle 236 jets out flames, and generates high-temperature flue gas, high-temperature flue gas is pyrolyzed the organic matter in bed of material surface layer, with wind
The operation of machine, high-temperature flue gas spread to bottom by bed of material surface layer, and the organic matter being gradually pyrolyzed in the bed of material, making its pyrolysis is titanium dioxide
The gas molecules such as carbon, sulfur dioxide and water, the gas molecule of generation from top to bottom enter exhaust column 235 with high-temperature flue gas and form heat
The flue gas that section generates is solved, the flue gas that partial thermal decomposition section generates enters preheating section 231 with exhaust column, what another part pyrolysis section generated
Flue gas enters the purification of flue gas purification system 3, at this point, the salt and organic matter in the bed of material are efficiently separated, the bed of material enters cooling section
233 is cooling；In cooling section 233, the flue gas that the lower preheating section of temperature generates enters with preheating section backflow flue gas import 237, and
The bed of material is cooled down to obtain finished product salt, flue gas heats up to form the flue gas of cooling section generation, enters heat with draught hood 24 and exhaust column 25
Section 232 is solved, the temperature of pyrolysis section 232 is controlled.
Above system is realized by the formation flue gas recirculation to draught hood 24, exhaust column 25 and blower 26 to gas thermal energy
Make full use of, by control pyrolysis smoke be passed through the factors such as the ratio of preheating section 231, the revolving speed of blower 26 and gas flow
It realizes to the vacuum cavitations of system and the control of temperature, so that the temperature gradient of pyrolysis section 232 is small and is in stable state always,
Make
Embodiment 2 handles the dry salt of chlorine industry by-product using the system of embodiment 1
Before processing, the partial size more than 5% dry salt is greater than 30mm, wherein the TOC of the dry salt of chlorine industry by-product is 750ppm.
Method containing organic materialization work abraum salt is handled using self- propagating pyrolysismethod, comprising the following steps:
(1) it pre-processes
Abraum salt by partial size more than or equal to 30mm is broken for granulated salt, and the abraum salt by partial size less than 30mm directly carries out cloth
Material.
(2) pyrolysis processing:
Using granulated salt as grate-layer material, powder salt is arranged on pyrolysis installation, and grate-layer material is with a thickness of 2mm, thickness of feed layer
350mm；
It is burnt after cloth using natural gas fired, burned flame is not directly contacted with material, using negative pressure exhausting mode, bears
Pressure is 500~1900Pa, and natural gas sustained combustion generates high-temperature flue gas and is transferred to whole from bed of material surface by self- propagating mode
The bed of material, the temperature for controlling high-temperature flue gas is 700 DEG C or so, and the time of pyrolysis is 60min, and the bed of material after cooling pyrolysis is finished product
Salt；
(3) fume treatment: the flue gas with gaseous compound is passed through system for cleaning fume, flue gas is removed
Dirt, desulphurization and denitration, the processing of VOCS adsorption cleaning.
Finished product salt is in white colour, and salt particle is uniform in size, and no vitreous clinker, 95% particle size range is in 0.1mm~30mm model
In enclosing.
Inspection is sampled respectively to the bed of material point upper, middle and lower segment after cooling, the method by detecting TOC, reflection has
The removal rate of machine object.Operating method are as follows: compound concentration about 10g/L dry salting liquid directly measures after slow filter paper filtering, with reference to mark
Quasi- HJ501-2009.The testing result that bed of material upper, middle and lower is three is respectively as follows: 3.2ppm, 3.61ppm and 8.00ppm.
Embodiment 3 handles the dry salt of chlorine industry by-product using the system of embodiment 1
Before processing, the partial size more than 95% dry salt is less than 2mm, wherein the TOC of the dry salt of chlorine industry by-product is 1200ppm.
Method containing organic materialization work abraum salt is handled using self- propagating pyrolysismethod, comprising the following steps:
(1) it pre-processes,
By the dry salt balling-up of by-product, balling-up partial size is 6~10mm.
(2) pyrolysis processing:
Bead is directly elaborated on pyrolysis installation, thickness of feed layer 500mm；
It is burnt after cloth using natural gas fired, burned flame is not directly contacted with material, using negative pressure exhausting mode, bears
Pressure is 450~2500Pa, and fuel sustained combustion generates high-temperature flue gas and is transferred to whole material from bed of material surface by self- propagating mode
Layer, the temperature for controlling high-temperature flue gas is 600 DEG C, and the time of pyrolysis is 120min, and the bed of material after cooling pyrolysis is finished product salt；
(3) fume treatment: the flue gas with gaseous compound is passed through system for cleaning fume, flue gas is removed
Dirt, desulphurization and denitration, the processing of VOCS adsorption cleaning.
Finished product salt is in white colour, and salt particle is uniform in size, and no vitreous clinker, 95% particle size range is within the scope of 3~10mm.
Inspection is sampled respectively to the bed of material point upper, middle and lower segment after cooling, the method by detecting TOC, reflection has
The removal rate of machine object.Operating method are as follows: compound concentration about 10g/L dry salting liquid directly measures after slow filter paper filtering, with reference to mark
Quasi- HJ501-2009.The testing result that bed of material upper, middle and lower is three is respectively as follows: 6.31ppm, 8.24ppm and 9.58ppm.
Embodiment 4 handles the dry salt of chlorine industry by-product using the system of embodiment 1
Before processing, the partial size of 95% dry salt is between 2~30mm, wherein the TOC of the dry salt of chlorine industry by-product is
2561ppm。
Method containing organic materialization work abraum salt is handled using self- propagating pyrolysismethod, comprising the following steps:
(1) pyrolysis processing:
The dry salt of by-product is directly elaborated on pyrolysis installation, thickness of feed layer 400mm；
It is burnt after cloth using natural gas fired, burned flame is not directly contacted with material, using negative pressure exhausting mode, bears
Pressure is 300~2000Pa, and fuel sustained combustion generates high-temperature flue gas and is transferred to whole material from bed of material surface by self- propagating mode
Layer, the temperature for controlling high-temperature flue gas is 900 DEG C, and the time of pyrolysis is 90min, and the bed of material after cooling pyrolysis is finished product salt；
(2) fume treatment: the flue gas with gaseous compound is passed through system for cleaning fume, flue gas is removed
Dirt, desulphurization and denitration, the processing of VOCS adsorption cleaning.
Finished product salt is in white colour, and salt particle is uniform in size, and 95% particle size range is within the scope of 1~30mm.
Inspection is sampled respectively to the bed of material point upper, middle and lower segment after cooling, the method by detecting TOC, reflection has
The removal rate of machine object.Operating method are as follows: compound concentration about 10g/L dry salting liquid directly measures after slow filter paper filtering, with reference to mark
Quasi- HJ501-2009.The testing result that bed of material upper, middle and lower is three is respectively as follows: 5.45ppm, 6.13ppm and 8.21ppm.
The dry salt of by-product that embodiment 5 is generated using the system processing polyphenylene sulfide production process of embodiment 1
Before processing, the partial size of 95% dry salt is less than 2mm, wherein the TOC of the dry salt of chlorine industry by-product is 11750ppm.
Method containing organic materialization work abraum salt is handled using self- propagating pyrolysismethod, comprising the following steps:
(1) it pre-processes
By the dry salt balling-up of by-product, partial size is 3~8mm
(2) pyrolysis processing:
Bead is directly elaborated on pyrolysis installation, thickness of feed layer 350mm；
It is burnt after cloth using natural gas fired, burned flame is not directly contacted with material, using negative pressure exhausting mode, bears
Pressure is 100~1200Pa, and fuel sustained combustion generates high-temperature flue gas and is transferred to whole material from bed of material surface by self- propagating mode
Layer, the temperature for controlling high-temperature flue gas is 600 DEG C, and the time of pyrolysis is 60min, and the bed of material after cooling pyrolysis is finished product salt；
(3) fume treatment: the flue gas with gaseous compound is passed through system for cleaning fume, flue gas is removed
Dirt, desulphurization and denitration, the processing of VOCS adsorption cleaning.
Finished product salt is in brown color, and salt particle is uniform in size, and no vitreous clinker, 95% particle size range is in 3~8mm range
It is interior.Ball keeps its original shape in pyrolytic process, does not rupture substantially.
Inspection is sampled respectively to the bed of material point upper, middle and lower segment after cooling, the method by detecting TOC, reflection has
The removal rate of machine object.Operating method are as follows: compound concentration about 10g/L dry salting liquid directly measures after slow filter paper filtering, with reference to mark
Quasi- HJ501-2009.The testing result that bed of material upper, middle and lower is three is respectively as follows: 6.01ppm, 7.33ppm and 9.45ppm.
The dry salt of by-product that embodiment 6 is generated using the system processing polyphenylene sulfide production process of embodiment 1
Before processing, the partial size of 95% dry salt is less than 2mm, wherein the TOC of the dry salt of chlorine industry by-product is 21056ppm.
Method containing organic materialization work abraum salt is handled using self- propagating pyrolysismethod, comprising the following steps:
(1) it pre-processes
By the dry salt balling-up of by-product, partial size is 3~8mm
(2) pyrolysis processing:
Bead is directly elaborated on pyrolysis installation, thickness of feed layer 350mm；
It is burnt after cloth using natural gas fired, burned flame is not directly contacted with material, using negative pressure exhausting mode, bears
Pressure is 200~3000Pa, and fuel sustained combustion generates high-temperature flue gas and is transferred to whole material from bed of material surface by self- propagating mode
Layer, the temperature for controlling high-temperature flue gas is 650 DEG C, and the time of pyrolysis is 60min, and the bed of material after cooling pyrolysis is finished product salt；
(3) fume treatment: the flue gas with gaseous compound is passed through system for cleaning fume, flue gas is removed
Dirt, desulphurization and denitration, the processing of VOCS adsorption cleaning.
Finished product salt is in brown color, and salt particle is uniform in size, and no vitreous clinker, 95% particle size range is in 3~8mm range
It is interior.
Inspection is sampled respectively to the bed of material point upper, middle and lower segment after cooling, the method by detecting TOC, reflection has
The removal rate of machine object.Operating method are as follows: compound concentration about 10g/L dry salting liquid directly measures after slow filter paper filtering, with reference to mark
Quasi- HJ501-2009.The testing result that bed of material upper, middle and lower is three is respectively as follows: 5.59ppm, 7.46ppm and 8.11ppm.
The dry salt of by-product that embodiment 7 is generated using the system processing polyphenylene sulfide production process of embodiment 1
Before processing, the partial size greater than 95% dry salt is located at 20~30mm, wherein the TOC of the dry salt of chlorine industry by-product is
5630ppm。
Method containing organic materialization work abraum salt is handled using self- propagating pyrolysismethod, comprising the following steps:
(1) pyrolysis processing:
The dry salt of by-product is directly elaborated on pyrolysis installation, thickness of feed layer 500mm；
It is burnt after cloth using natural gas fired, burned flame is not directly contacted with material, using negative pressure exhausting mode, bears
Pressure is 300~1900Pa, and fuel sustained combustion generates high-temperature flue gas and is transferred to whole material from bed of material surface by self- propagating mode
Layer, the temperature for controlling high-temperature flue gas is 900 DEG C, and the time of pyrolysis is 90min, and the bed of material after cooling pyrolysis is finished product salt；
(3) fume treatment: the flue gas with gaseous compound is passed through system for cleaning fume, flue gas is removed
Dirt, desulphurization and denitration, the processing of VOCS adsorption cleaning.
Finished product salt is in brown color, and salt particle is uniform in size, and no vitreous clinker, 95% particle size range is within the scope of 3-8mm.
Inspection is sampled respectively to the bed of material point upper, middle and lower segment after cooling, the method by detecting TOC, reflection has
The removal rate of machine object.Operating method are as follows: compound concentration about 10g/L dry salting liquid directly measures after slow filter paper filtering, with reference to mark
Quasi- HJ501-2009.The testing result that bed of material upper, middle and lower is three is respectively as follows: 5.59ppm, 7.46ppm and 8.11ppm.
By embodiment 2~7 it is found that the finished product salt of present system processing is not easy vitreous clinker, organic matter is sufficiently removed, by
In the stably and controllable of pyrolysis temperature, which can realize the processing to the chemical industry abraum salt containing different organic matters.
The organic matter in chlor-alkali abraum salt can be effectively removed by the system of the utility model, the finished product salt after burning disposal
Chlorine industry salt requirement is fully achieved, the industry field more demanding to salt such as ion film caustic soda can be directly entered, really
Reach abraum salt harmless treatment, play turn waste into wealth, Resource recovery recycle purpose.
Claims (5)
1. handling the system containing organic materialization work abraum salt using self- propagating pyrolysismethod, which is characterized in that successively include pretreatment system
It unites (1), self- propagating pyrolysis installation (2) and flue gas purification system (3), the self- propagating pyrolysis installation (2) include the conveying of chain with formula
Machine (21)；Link conveyor (21) head upper is successively arranged distributing device (22), upper housing (23) along chain belt direction of travel；On
Shell is sealed chain belt upper space, and is successively divided into preheating section (231), pyrolysis section (232) and cooling section (233),
The preheating section (231) is equipped with pyrolysis section backflow flue gas import (234)；Multiple gas injections are equipped in the pyrolysis section (232)
Head (236), the pyrolysis section (232) are equipped with cooling section backflow flue gas import (235)；The cooling section (233) is equipped with pre-
Hot arc backflow flue gas import (237)；The preheating section (231), pyrolysis section (232) and cooling section (233) and chain belt (212) are formed
Space below be evenly equipped with draught hood (24), the draught hood (24) is connected with exhaust column (25) and blower (26), described pre-
The flue gas that hot arc (231) generates successively enters through draught hood (24), exhaust column (25) and preheating section backflow flue gas import (237) cold
But section (233), the partial fume that the pyrolysis section (232) generates successively are returned through draught hood (24), exhaust column (25) and pyrolysis section
It flows gas inlet (234) and enters preheating section (231), another part flue gas generated is directly entered flue gas purification system (3), institute
State cooling section (233) generation flue gas successively through draught hood (24), exhaust column (25) and cooling section backflow flue gas import (235) into
Enter pyrolysis section.
2. the system as claimed in claim 1, which is characterized in that the gas spray head (236) is in horizontally disposed, the combustion gas of ejection
Flame is not directly contacted with the bed of material.
3. system as claimed in claim 2, which is characterized in that it is useful to go back cloth between the distributing device (22) and upper housing (23)
In the mechanical loosening apparatus (27) for carrying out out air hole processing to the bed of material.
4. system as claimed in claim 2, which is characterized in that lower section is additionally provided between the corresponding chain belt of the distributing device (22)
Material recycle storehouse (28).
5. such as the described in any item systems of Claims 1 to 4, which is characterized in that the pretreatment system (1) includes being sequentially arranged
Screening machine (11), pulverizer (12) and nodulizer (13)；The flue gas purification system successively includes bag filter (31), takes off
Sulphur device (32), denitrator (33) and VOCS absorber (34).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111594847A (en) * | 2020-05-29 | 2020-08-28 | 重庆盎瑞悦科技有限公司 | Harmless treatment method for waste incineration fly ash |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111594847A (en) * | 2020-05-29 | 2020-08-28 | 重庆盎瑞悦科技有限公司 | Harmless treatment method for waste incineration fly ash |
| CN112283712A (en) * | 2020-10-21 | 2021-01-29 | 深圳市捷晶能源科技有限公司 | Chlorine-containing and bromine-containing solid waste pyrolysis system |
| CN112850750A (en) * | 2021-02-02 | 2021-05-28 | 北京航天环境工程有限公司 | Industrial waste salt pyrolysis treatment system |
| CN114405968A (en) * | 2022-03-11 | 2022-04-29 | 江苏碳峰蓝节能科技有限公司 | In-situ oxidation hazardous waste disposal system |
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