CN104962300B - Coal microwave destructive distillation equipment and its coal microwave destructive distillation processing method - Google Patents
Coal microwave destructive distillation equipment and its coal microwave destructive distillation processing method Download PDFInfo
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- CN104962300B CN104962300B CN201510349031.2A CN201510349031A CN104962300B CN 104962300 B CN104962300 B CN 104962300B CN 201510349031 A CN201510349031 A CN 201510349031A CN 104962300 B CN104962300 B CN 104962300B
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Abstract
The invention discloses a kind of coal microwave destructive distillation equipment and its coal microwave method for destructive distillation.The equipment includes feed system（1）, microwave destructive distillation stove（2）, installed in microwave destructive distillation stove（2）On microwave generator（3）And microwave destructive distillation stove（2）Connected dust pelletizing system（4）With dust pelletizing system（4）Connected tar and gas cooling collection system（5）And microwave destructive distillation stove（2）Connected tailing cooling system（6）And tailing cooling system（6）Connected discharge system（7）.The present invention utilizes microwave high power technology in sealed states, low-quality coal is heated, low-quality coal of the moisture content less than 5% is heated to 600 DEG C under oxygen barrier state, coal is pyrolyzed, obtains the high value added products such as tar, semi-coke, coal gas.The achievable coal resources of the present invention are innoxious, minimizing processing, solve the problems such as low-quality coal calorific value is low, and Air-pollution From Combustion is big.
Description
Technical field
The present invention relates to a kind of Coal dressing equipment, and in particular at coal microwave destructive distillation equipment and its coal microwave destructive distillation
Reason method, belong to microwave heating technique field.
Background technology
The direct burning of low-order coal not only wastes the substantial amounts of energy, fund and equipment, also seriously pollutes environment, burning
The noxious gas emission such as dust, oxygen sulfur compound, oxynitrides and carbon monoxide caused by imperfect combustion in product
Dust pollution and gaseous contamination can be caused into air.With expanding economy, the improvement of people's living standards, environmental protection meaning
The reinforcement of knowledge, and national requirements is reasonable to coal resources, efficient comprehensive development and utilization, the low order dry distillation of coal will necessarily more and more by
To attention and promote.Coal distillation process is a lot：（1）It can be divided into external-heat, internal heat type and the interior outer hot mixing of heat by mode of heating
Formula.Heating medium in external-heat technology is not directly contacted with raw material, and heat is passed to by tube wall；The heating medium of internal heat type stove with
Raw material directly contacts.（2）Then there are two kinds of solid heat carrier method and air heat support methods by the difference of heating medium.Solid thermal carriers
By the semicoke or heat ash of pyrolysis production pyrolysis solid heat energy is made full use of as thermal cyclic carrier：Gas heat carrier is warmed by height
Destructive distillation is dried as thermal cyclic carrier in flue gas or indifferent gas.（3）According to solid material in capital equipment（Reactor）Interior
Operation conditions, revolving bed, fixed bed, fluid bed, air flow bed can be divided into and roll bed（Rotary furnace/kiln）Technology etc..These techniques
Mode of heating be generally heat exchange pattern, i.e., first material environment is preheated, then pass through heat conduction, convection current and radiation side
Formula heats to material so that material be stage by stage, branch point carries out, it is impossible to it is overall to carry out, therefore the efficiency of heating surface is relatively low,
And secondary response is easily produced in heating protocol.
The content of the invention
Goal of the invention：Present invention aims to solve the deficiencies of the prior art, and provides a kind of a kind of reasonable in design, operation side
Just, the feature of environmental protection is strong, and the efficiency of heating surface is very high, and cost is low, can prevent occurring secondary response in heating process, can be effectively to coal etc.
The coal microwave destructive distillation equipment that material is quickly heated.Another purpose of the invention is to provide at coal microwave destructive distillation
The method of reason.
Technical scheme, in order to realize above goal of the invention, the technical scheme that the present invention takes is:
A kind of coal microwave destructive distillation equipment, it includes feed system, the microwave destructive distillation stove being connected with feed system, installation
Microwave generator in microwave destructive distillation stove surrounding, the dust pelletizing system that is connected with microwave destructive distillation stove, it is connected with dust pelletizing system
Tar and gas cooling collection system, the tailing cooling system that is connected with microwave destructive distillation stove, it is connected with tailing cooling system
Discharge system；
Described feed system includes receiver bin, the proportioning belt scale being connected with receiver bin, is connected with proportioning belt scale
High angle belt conveyer, the vibration material distributor being connected with high angle belt conveyer；
The body of heater of described microwave destructive distillation stove to be round, body of heater by steel structure framework, on steel structure framework
Interior steel plate, the heat-preservation cotton on interior steel plate, the outer casing furnace shell steel plate outside heat-preservation cotton are formed；
Described microwave generator is distributed in the surrounding on microwave destructive distillation stove top, angle between each two microwave generator
For 45 degree of angles, arrange 6 power supplys in the surrounding of rotary hearth furnace altogether.
Described tailing cooling system includes high-temperature water cooling spiral discharging machine, and what is be connected with high-temperature water cooling spiral conveyor goes out
Expect conveyer belt, the spray equipment being connected with discharge belt.
Preferably, above-described coal microwave destructive distillation equipment, described microwave destructive distillation stove is annular closed
Microwave destructive distillation kiln, it is to be pyrolyzed coal by the use of microwave as thermal source.Outer furnace wall and furnace roof form annular furnace in its body of heater, are bodies of heater
Fixed structure；Burner hearth is heat supply space, and body of heater is welded into round by heatproof dense steel plate；Body of heater is by steel structure framework, 310s
Steel plate+common heat-preservation cotton+outer casing furnace shell steel plate is formed（External thermal insulation）.The furnace bottom of annular closed microwave destructive distillation kiln can rotate,
Driven by two sets of motors.Uniform 3 explosion-protection equipments of stove furnace roof, it is ensured that the security of kiln body.And annular closed microwave is done
Evaporate 6 pump drainage mouths of furnace roof part cloth of kiln（Include explosion-protection equipment and pressure detecting）, body of heater internal pressure can be monitored in real time, ensure kiln body
Security.
The body of heater of the microwave destructive distillation stove stated is sealed by water seal knife.Water seal knife is in microwave destructive distillation stove（Rotary hearth furnace）
Between inner chamber and exocoel, there is the tank that a circle fills water between interior exocoel, centre is separated by dividing plate, carried out by water close
Envelope.Above-mentioned microwave gas retort kiln owner will have the function and enclosed oxygen isolation function of insulation, and burner hearth is heat supply space, body of heater
It is welded into by heatproof dense steel plate round, the enclosed oxygen isolation of microwave distillation apparatus is mainly sealed and entered by the water seal knife of whole body of heater
The material seal structure of discharging opening is sealed.
Preferably, above-described coal microwave destructive distillation equipment, described microwave generator is 6 915MHz
75Kw power supplys carry out material microwave heating, it is micro- using CST electromagnetic simulation softwares, optimization design microwave heating chamber body size
Wave heating chamber size is internal diameter 3m, and external diameter 5m converter structure, the feedback mouth size of microwave is irregular quadrangle, and length is distinguished
For 713mm, 475mm, 706mm, 397mm, feedback mouth position is as shown in figure 1, the angle between two microwave mouths is 45 °, round turning
The feedback mouth mode that bottom stove one encloses.Angle is 45 degree of angles between each two microwave generator；Using the microwave generator of this structure
And its technical advantage that installation site is brought is one, makes the Distribution of Magnetic Field of whole rotary hearth furnace be charging aperture relative to discharging opening
Magnetic density is relatively closeer, and temperature field is evenly distributed in whole rotary hearth furnace during long time running.2nd, easy for installation, feedback mouth uses
The rear end feedback mouth of two sections of mounting means, fixed front end feedback mouth and convenient installation, rear end feedback mouth are installed with microwave generator.
Preferably, above-described coal microwave destructive distillation equipment, described tar and gas cooling collection system
Including aerial cooler, the blower fan being connected with aerial cooler, the air accumulator being connected with blower fan.
Preferably, above-described coal microwave destructive distillation equipment, it is characterised by, described dust pelletizing system is ceramics
Film deduster.
Coal microwave destructive distillation equipment of the present invention, wherein feed system uses vibration material distributor, and the present invention passes through number
Modelling is learned, makes microwave destructive distillation stove（Rotary hearth furnace）Rotating speed, radial direction doses difference, vibrating feed amount realize it is unified, can
Ensure that fan-shaped charge level is uniform, and cloth carried out to coal cinder material by vibration material distributor, can effectively eliminate the difference of radial direction doses,
So as to be greatly improved the microwave efficiency of heating surface, extraordinary technique effect is achieved.
Coal microwave destructive distillation equipment of the present invention, wherein tar and gas cooling collection system, the collection master of tar
Cooled down and collected by aerial cooler, led out into by the gas of aerial cooler through blower fan in air accumulator.
Coal microwave destructive distillation equipment of the present invention, wherein dust pelletizing system, low-quality coal（Lignite, jet coal etc.）Enter
Going has substantial amounts of flue gas after being pyrolyzed, in flue gas in addition to containing gases such as tar gas, CO, also containing substantial amounts of flue-gas, coal
Flue gas can cause the damage of aerial cooler and influence the collection of tar, and the present invention selects ceramic membrane to remove by experiment screening
Dirt device carries out the dustproof function of flue gas, and effect protrudes.
Coal microwave destructive distillation equipment of the present invention, tailing cooling system, the tailing of rotary hearth furnace pass through high-temperature water cooling spiral shell
The discharging that discharging machine carries out tailing is revolved, tailing enters in discharge belt after high-temperature water cooling spiral conveyor cools down, finally
Entered the final cooling that spray equipment carries out semi-coke.
Coal microwave destructive distillation equipment of the present invention, wherein discharge system is discharge with endless screw form, present invention improves over
Material, curve form and the connecting mode of helical blade, the helical axis equipped with scraper is by motor via reducer and Chain conveyer band
It is dynamic.Motor uses frequency control, and rotating speed is adjusted to convenient.Discharging machine is provided with lowering or hoisting gear, to adjust the height of helical axis,
Discharging is convenient.
A kind of coal microwave destructive distillation processing method provided by the invention, it comprises the following steps：
Step 1: coal is transported into receiver bin, and coal is transported to by high angle belt conveyer by proportioning belt scale, then
It is transported to by high angle belt conveyer in vibration material distributor and carries out cloth；
Step 2: coal moves in microwave destructive distillation stove internal rotation, and it is micro- by 6 on microwave destructive distillation stove
Wave producer is to coal
Material is heated；
Step 3: after heating a period of time, the high attachment product that heating obtains from coal material passed through blower fan guiding
The dedusting that dust pelletizing system carries out flue gas is initially entered, the gentle body of tar is carried out subsequently into tar and gas cooling collection system
Collect；
Step 4: the high-temperature water cooling screw machine that the coal material after heating passes through in tailing cooling system is from microwave gas retort
In kiln out, and transported out by conveyer belt, final product semi-coke is obtained eventually through spray equipment.
Beneficial effect：The present invention has advantages below compared with prior art：
Coal microwave destructive distillation equipment provided by the invention, it is reasonable in design, it is micro- especially to microwave generator optimization design
The structure and Cooling Design of ripple destructive distillation stove, the design of collection system and dust removal and filtration system being cooled down, whole equipment operation is convenient,
The feature of environmental protection is strong, and the efficiency of heating surface is very high, and cost is low, can prevent occurring secondary response in heating process, can be effectively to things such as coals
Material is quickly heated.
The method of coal microwave destructive distillation processing provided by the invention, technological design is reasonable, workable, destructive distillation processing effect
Rate is high, and adsorption capacity enhancing, the specific surface area increase of the solid semi-coke that destructive distillation obtains, gas aoxidize containing abundant hydrogen and one
Carbon, plenty of time and the energy can be saved compared with prior art.Being heated for microwave, material center temperature is higher than surface temperature, its
Heat and mass direction is identical, and volatile matter passes through low-temperature space, it is possible to reduce secondary response.
Coal microwave destructive distillation equipment provided by the invention, in sealed states using microwave high power technology, to low-quality
Coal（Lignite, jet coal etc.）Heated, be heated to low-quality coal of the moisture content less than 5% under oxygen barrier state
600 DEG C, coal is pyrolyzed, obtains tar, semi-coke, the high value added product such as coal gas, the achievable coal resources of the present invention without
Evilization, minimizing processing, solve low-quality coal calorific value it is low, using the problems such as space is small, Air-pollution From Combustion is big, improve coal valency
Value, improve resource chain, reach the energy and maximally utilize and the purpose of energy-saving and emission-reduction, there is important environmental protection meaning.And energy
Produce good economic value.
The present invention is heated using microwave, and microwave is to be between the infrared electromagnetic wave between radio wave, its wave-length coverage
100~0.1 cm, corresponding frequency range are 300 ~ 300000 MHz.Compared with traditional heating, because microwave heating is directly made
For the molecule or ion of material, the vibration of molecule or ion is caused to produce heat, rather than by heat transfer by heat conduction, therefore it
With the faster efficiency of heating surface.
Brief description of the drawings
Fig. 1 is the structural representation of coal microwave destructive distillation equipment provided by the invention.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate
The present invention rather than limitation the scope of the present invention, after the present invention has been read, those skilled in the art are each to the present invention's
The modification of the kind equivalent form of value falls within the application appended claims limited range.
Embodiment 1
As shown in Figure 1.A kind of coal microwave destructive distillation equipment, it includes feed system（1）With feed system（1）Connected
Microwave destructive distillation stove（2）, installed in microwave destructive distillation stove（2）The microwave generator of surrounding（3）And microwave destructive distillation stove（2）Phase
Dust pelletizing system even（4）With dust pelletizing system（4）Connected tar and gas cooling collection system（5）And microwave destructive distillation stove
（2）Connected tailing cooling system（6）And tailing cooling system（6）Connected discharge system（7）；
Described feed system（1）Including receiver bin（1-1）, with receiver bin（1-1）Connected proportioning belt scale（1-2）,
With proportioning belt scale（1-2）Connected high angle belt conveyer（1-3）, with high angle belt conveyer（1-3）Connected vibration material distributor（1-
4）；
Described microwave destructive distillation stove（2）Body of heater to be round, body of heater by steel structure framework, on steel structure framework
Interior steel plate, the heat-preservation cotton on interior steel plate, outer casing furnace shell steel plate outside heat-preservation cotton forms；
Described microwave generator（3）It is distributed in microwave destructive distillation stove（2）The surrounding on top, each two microwave generator
（3）Between angle be 45 degree of angles, altogether arrange 6 microwave generators（3）In the surrounding of rotary hearth furnace.
Described tailing cooling system（6）Including high-temperature water cooling spiral discharging machine, it is connected with high-temperature water cooling spiral conveyor
Discharge belt, the spray equipment being connected with discharge belt.
Above-described coal microwave destructive distillation equipment, described microwave destructive distillation stove（2）Body of heater mainly there is thermal insulation separation
The function and enclosed oxygen isolation function of heat, microwave destructive distillation stove（2）Enclosed oxygen isolation mainly sealed by the water seal knife of whole body of heater
Sealed with the material seal structure of feed inlet and outlet.Water seal knife is in microwave destructive distillation stove（2）Between inner chamber and exocoel, between interior exocoel
There is the tank that a circle fills water, centre is separated by dividing plate, sealed by water.
Above-described coal microwave destructive distillation equipment, described microwave generator（3）75Kw power supplys for 6 915MHz enter
The microwave heating of row material, using CST electromagnetic simulation softwares, optimization design microwave heating chamber body size, microwave heating chamber size
For internal diameter 3m, external diameter 5m converter structure, microwave generator（3）Feedback mouth size be irregular quadrangle, length is respectively
713mm, 475mm, 706mm, 397mm, microwave generator（3）Mouth position is presented as shown in figure 1, the angle between two microwave mouths is
45 °, the feedback mouth mode enclosed round rotary hearth furnace one.
Above-described coal microwave destructive distillation equipment, described tar and gas cooling collection system（5）It is cold including air
But device（5-1）, with aerial cooler（5-1）Connected blower fan（5-2）, with blower fan（5-2）Connected air accumulator（5-3）.
Above-described coal microwave destructive distillation equipment, described dust pelletizing system（4）For ceramic membrane deduster.
Coal microwave destructive distillation equipment provided by the invention utilizes microwave high power technology in sealed states, to low-quality coal
Charcoal（Lignite, jet coal etc.）It is pyrolyzed, obtains the high value added products such as tar, semi-coke, coal gas.
Embodiment 2
A kind of coal microwave destructive distillation processing method, it comprises the following steps：
Step 1: coal is transported to receiver bin（1-1）, and pass through proportioning belt scale（1-2）Coal is transported to and inclined greatly
Cuticle band（1-3）, then pass through high angle belt conveyer（1-3）It is transported to vibration material distributor（1-4）Middle carry out cloth；
Step 2: coal is in microwave destructive distillation stove（2）Internal rotation is moved, and by installed in microwave destructive distillation stove（2）On
6 microwave generators（3）Coal material is heated；
Step 3: the high attachment product that heating obtains from coal material passed through blower fan（5-2）Guiding, which initially enters, to remove
Dirt system（4）The dedusting of flue gas is carried out, subsequently into tar and gas cooling collection system（5）The gentle body of tar is received
Collection；
Step 4: the coal material after heating passes through tailing cooling system（6）In high-temperature water cooling screw machine done from microwave
Furnace kiln（2）In out, and transported out by conveyer belt, final product semi-coke obtained eventually through spray equipment.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (1)
1. a kind of coal microwave destructive distillation equipment, it is characterised in that it is connected micro- including feed system (1), with feed system (1)
Ripple destructive distillation stove (2), the microwave generator (3) installed in microwave destructive distillation stove (2) surrounding, it is connected with microwave destructive distillation stove (2)
Dust pelletizing system (4), the tar that is connected with dust pelletizing system (4) and gas cooling collection system (5), with microwave destructive distillation stove (2)
Connected tailing cooling system (6), the discharge system (7) being connected with tailing cooling system (6)；
Described feed system (1) includes receiver bin (1-1), the proportioning belt scale (1-2) being connected with receiver bin (1-1), with
Expect the connected high angle belt conveyer (1-3) of belt conveyer scale (1-2), the vibration material distributor (1-4) being connected with high angle belt conveyer (1-3)；
The body of heater of described microwave destructive distillation stove (2) to be round, body of heater by steel structure framework, on steel structure framework in
Steel plate, the heat-preservation cotton on interior steel plate, the outer casing furnace shell steel plate outside heat-preservation cotton are formed；
Described microwave generator (3) is distributed in the surrounding on microwave destructive distillation stove (2) top, each two microwave generator (3) it
Between angle be 45 degree of angles, altogether arrange 6 microwave generators (3) in the surrounding of microwave destructive distillation stove (2)；
Described tailing cooling system (6) includes high-temperature water cooling spiral discharging machine, and what is be connected with high-temperature water cooling spiral conveyor goes out
Expect conveyer belt, the spray equipment being connected with discharge belt；
The body of heater of described microwave destructive distillation stove (2) is sealed by water seal knife, and microwave destructive distillation stove (2) has between inner chamber and exocoel
One circle fills the tank of water, and centre is separated by dividing plate, sealed by water；
The 75Kw power supplys that described microwave generator (3) is 6 915MHz carry out the microwave heating of material, are imitated using CST electromagnetism
True software, optimization design microwave heating chamber body size, microwave heating chamber size are internal diameter 3m, external diameter 5m converter structure, microwave
Feedback mouth size be irregular quadrangle, length is respectively 713mm, 475mm, 706mm, 397mm, two microwave generators
(3) the angle between microwave mouth is 45 degree, the feedback mouth mode enclosed round microwave destructive distillation stove (2) one；
Described tar and gas cooling collection system (5) include aerial cooler (5-1), are connected with aerial cooler (5-1)
Blower fan (5-2), the air accumulator (5-3) being connected with blower fan (5-2)；
Described dust pelletizing system (4) is ceramic membrane deduster.
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| CN201510349031.2A CN104962300B (en) | 2015-06-24 | 2015-06-24 | Coal microwave destructive distillation equipment and its coal microwave destructive distillation processing method |
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| CN106675595B (en) * | 2015-11-05 | 2019-06-11 | 中国石油化工股份有限公司大连石油化工研究院 | A kind of biomass pyrogenation gasification method and biomass pyrolysis system |
| CN113526821B (en) * | 2020-04-22 | 2022-11-15 | 宝山钢铁股份有限公司 | Method and device for resource utilization of oily sludge in steel plant |
| TWI769887B (en) * | 2021-07-09 | 2022-07-01 | 永虹先進材料股份有限公司 | Coal water removal equipment |
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| GB275041A (en) * | 1926-10-02 | 1927-08-04 | Trocknungs Verschwelungs Und V | Improvements in or relating to annular ovens or furnaces with rotary hearths |
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