CN204417407U - A kind of mass-producing low order fine coal low temperature pyrogenation device - Google Patents
A kind of mass-producing low order fine coal low temperature pyrogenation device Download PDFInfo
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- CN204417407U CN204417407U CN201520060968.3U CN201520060968U CN204417407U CN 204417407 U CN204417407 U CN 204417407U CN 201520060968 U CN201520060968 U CN 201520060968U CN 204417407 U CN204417407 U CN 204417407U
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- 239000003245 coal Substances 0.000 title claims abstract description 43
- 238000000197 pyrolysis Methods 0.000 claims abstract description 75
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 238000001816 cooling Methods 0.000 claims abstract description 22
- 238000001914 filtration Methods 0.000 claims abstract description 20
- 238000004062 sedimentation Methods 0.000 claims abstract description 18
- 239000007789 gas Substances 0.000 claims description 25
- 238000011084 recovery Methods 0.000 claims description 6
- 239000002918 waste heat Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000005119 centrifugation Methods 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 20
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000012545 processing Methods 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 239000002245 particle Substances 0.000 description 9
- 239000000571 coke Substances 0.000 description 6
- 239000011269 tar Substances 0.000 description 6
- 239000013618 particulate matter Substances 0.000 description 5
- 239000003034 coal gas Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010882 bottom ash Substances 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 210000000952 spleen Anatomy 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The utility model discloses a kind of mass-producing low order fine coal low temperature pyrogenation device, the discharge gate of described vertical preheater is connected with pan feeding spiral, described pan feeding spiral is connected with pyrolysis kiln, the pyrolysis gas outlet of pyrolysis kiln is connected with sedimentation fishing box, described sedimentation fishing box is connected with high temperature filtration device, the semicoke outlet of described pyrolysis kiln is connected with semicoke cooling residual heat retrieving arrangement, the vapour outlet of semicoke cooling residual heat retrieving arrangement is connected with drum, the air outlet of air heating stove is connected with the blast inlet of pyrolysis kiln, the exhaust outlet of pyrolysis kiln is connected with the blast inlet of vertical preheater and the blast inlet of air heating stove respectively.This apparatus system forms simple, and process structure is reasonable, and be suitable for pyrolysis and the deep processing and production line construction of carrying out mass-producing, economy and the feature of environmental protection are all better.
Description
Technical field
The utility model belongs to technical field of coal chemical industry, is specially a kind of mass-producing low order fine coal low temperature pyrogenation device.
Background technology
The low temperature pyrogenation of coal realizes the technological approaches that low-rank coal comprehensive high-efficiency utilizes economical rationality the most, can be obtained the semicoke of coal gas, tar and high heating value by pyrolysis.
But more than existing low-temperature pyrolysis of coal device, being limited to the small-scale production process system that only can process lump coal, environmental protection and economic performance are all poor.The low temperature pyrogenation device of other type of fine coal can be processed, as external-heat multistage rotary kiln and solid heat carrier pyrolysis technique etc., also can not realize mass-producing because exist, problems such as process system imperfection and easily blocking and cannot promoting.The semicoke cooling that said apparatus is all imperfect and residual neat recovering system.High-temperature hot containing tar gas is vented one's spleen, and filter without particulate matter and directly cool recovery tar, cause foreign matter content in tar more, quality reduces greatly, is also not easy to further deep processing.
In existing pulverized coal pyrolysis method, also there is similar Multi-tube heating rotary type pyrolysis kiln, but all belong to the process system not having external placed type preheater, most pyrolysis kiln complex structure, kiln body bulky dimensions, cause that system cost is high, failure rate is also high.Moreover existing process system is not furnished with complete pyrolysis gas high temperature filtration yet and semicoke cools and waste-heat recovery device.
Utility model content
The purpose of this utility model is to provide a kind of mass-producing low order fine coal low temperature pyrogenation device, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of mass-producing low order fine coal low temperature pyrogenation device, comprise vertical preheater, pan feeding spiral, pyrolysis kiln, air heating stove, sedimentation connecting box, high temperature filtration device, semicoke cooling residual heat retrieving arrangement and drum, the discharge gate of described vertical preheater is connected with pan feeding spiral, described pan feeding spiral is connected with pyrolysis kiln, the pyrolysis gas outlet of pyrolysis kiln is connected with sedimentation fishing box, described sedimentation fishing box is connected with high temperature filtration device, the semicoke outlet of described pyrolysis kiln is connected with semicoke cooling residual heat retrieving arrangement, the vapour outlet of semicoke cooling residual heat retrieving arrangement is connected with drum, the air outlet of air heating stove is connected with the blast inlet of pyrolysis kiln, the exhaust outlet of pyrolysis kiln is connected with the blast inlet of vertical preheater and the blast inlet of air heating stove respectively.
As further program of the utility model, vertical preheater forms primarily of inlet pipe, thin-walled heat exchanging chamber, vapor pipe and body skin.
As further program of the utility model, described pyrolysis kiln is Multi-tube heating rotary type pyrolysis kiln, forms primarily of rotating cylinder, heating tube, riding wheel apparatus, transmission system and gas directing system.
As further program of the utility model, described semicoke cooling at least comprises level comb formula semicoke cold bed with waste-heat recovery device, and level comb formula semicoke cold bed is made up of grate conveying assembly, rolling support unit and hydraulic propelling system.
As further program of the utility model, described high temperature filtration device is the bipolar high temperature filtration device of pyrolysis gas, adopts compact structure, two-step purification is had to form, the first step adopts cyclone cylinder centrifugation, and the second stage is that high temperature chimney filter filters, and filtrable dust size is to micron order.
As further program of the utility model, the cross section of described thin-walled heat exchanging chamber is rectangle.
As further program of the utility model, the operation scheme that grate conveying assembly adopts grouping of together advancing to retreat is combination sealing between each conveying assembly.
A method for mass-producing low order fine coal low temperature pyrogenation, comprises the steps:
(1) treat that pyrolysis fine coal is first preheated to 200 ~ 300 DEG C through vertical preheater;
(2) fine coal after preheating sends into the pyrolysis of pyrolysis kiln through pan feeding spiral, is heated to 400 ~ 550 DEG C, generates high-temperature semi-coke and pyrolysis gas;
(3) big particle is first carried out sedimentation by sedimentation connecting box by the pyrolysis gas from pyrolysis kiln, then imports to high temperature filtration device and remove all the other particulate matter, then cools further, through separating tar and coal gas, and collection and treatment respectively; The high-temperature semi-coke generated after pyrolysis is cooled to less than 120 DEG C through semicoke cooling residual heat retrieving arrangement again and is discharged by level comb formula semicoke cold bed, and the steam generated after heat exchange is discharged by drum, for the production of line recycle, namely completes low order fine coal low temperature pyrogenation.
Describedly treat that pyrolysis fine coal is the fine coal that particle diameter is less than 20mm.
Compared with prior art, the beneficial effects of the utility model are:
(1) this device is formed by vertical preheater and pyrolysis kiln series combination, System's composition is simple, process structure is reasonable, method for pyrolysis have employed indirect heating type Multi-tube heating wind circulation pyrolysis principle, the gas active constituent content produced is high, calorific value is large, is convenient to further application and deep processing.
(2) novel process is applicable to large-scale production, separate unit year processing power can reach 1,000,000 tons, even higher, be suitable for pyrolysis and the deep processing and production line construction of carrying out mass-producing, economy and the feature of environmental protection are all better.
(3) adopt high temperature air filtration device to purify pyrolysis gas, greatly reduce the content of solid particulate matter in gas, effectively improve the purity of gas, be convenient to further cooling and tar separation.The structure of compact makes pyrolysis gas flow process in whole device the shortest, and temperature drop is minimum, is convenient to prevent process system coking and blocking.
(4) high-temperature semi-coke adopts horizontal grate dry quenching(of coke), and not only efficient recovery waste heat, also greatly reduces in conventional wet quenching operation the consumption of water resources and environmental pollution.Horizontal cold bed also helps the mounting height reducing whole process system, reduces civil engineering expense.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1, vertical preheater, 2, pan feeding spiral, 3, pyrolysis kiln, 4, hotblast stove, 5, sedimentation connecting box, 6, high temperature filtration device, 7, semicoke cooling residual heat retrieving arrangement, 8, drum.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further elaborated.
As shown in Figure 1, a kind of mass-producing low order fine coal low temperature pyrogenation device, comprise vertical preheater 1, pan feeding spiral 2, pyrolysis kiln 3, air heating stove 4, sedimentation connecting box 5, high temperature filtration device 6, semicoke cooling residual heat retrieving arrangement 7 and drum 8, the discharge gate of described vertical preheater 1 is connected with pan feeding spiral 2, described pan feeding spiral 2 is connected with pyrolysis kiln 3, the pyrolysis gas outlet of pyrolysis kiln 3 is connected with sedimentation fishing box 5, described sedimentation fishing box 5 is connected with high temperature filtration device 6, the semicoke outlet of described pyrolysis kiln 3 is connected with semicoke cooling residual heat retrieving arrangement 7, the vapour outlet of semicoke cooling residual heat retrieving arrangement 7 is connected with drum 8, the air outlet of air heating stove 4 is connected with the blast inlet of pyrolysis kiln 3, the exhaust outlet of pyrolysis kiln 3 is connected with the blast inlet of vertical preheater 1 and the blast inlet of air heating stove 4 respectively.Vertical preheater 1 forms primarily of inlet pipe, thin-walled heat exchanging chamber, vapor pipe and body skin.Pyrolysis kiln 3 is Multi-tube heating rotary type pyrolysis kiln, forms primarily of rotating cylinder, heating tube, riding wheel apparatus, transmission system and gas directing system.Semicoke cooling at least comprises level comb formula semicoke cold bed with waste-heat recovery device 7, and level comb formula semicoke cold bed is made up of grate conveying assembly, rolling support unit and hydraulic propelling system.High temperature filtration device 6 is the bipolar high temperature filtration device of pyrolysis gas, adopts compact structure, has two-step purification to form, and the first step adopts cyclone cylinder centrifugation, and the second stage is that high temperature chimney filter filters, and filtrable dust size is to micron order.The cross section of thin-walled heat exchanging chamber is rectangle.The operation scheme that grate conveying assembly adopts grouping of together advancing to retreat is combination sealing between each conveying assembly.
Adopt above-mentioned mass-producing low order fine coal low temperature pyrogenation device, the method steps of fine coal low temperature pyrogenation comprises: (1) treats pyrolysis fine coal, and the particle diameter of fine coal is less than 20mm, is first preheated to 200 ~ 300 DEG C through vertical preheater 1;
(2) fine coal after preheating sends into pyrolysis kiln 3 pyrolysis through pan feeding spiral 2, is heated to 400 ~ 550 DEG C, generates high-temperature semi-coke and pyrolysis gas;
(3) big particle is first carried out sedimentation by sedimentation connecting box 5 by the pyrolysis gas from pyrolysis kiln, then imports to high temperature filtration device 6 and remove all the other particulate matter, then cools further, through separating tar and coal gas, and collection and treatment respectively; The high-temperature semi-coke generated after pyrolysis, then be cooled to less than 120 DEG C by the discharge of level comb formula semicoke cold bed through semicoke cooling residual heat retrieving arrangement 7, the steam generated after heat exchange is discharged by drum 8, for the production of line recycle, namely completes low order fine coal low temperature pyrogenation.
The principle of work of mass-producing low order fine coal low temperature pyrogenation device: during system works, particle diameter is less than the fine coal of 20mm, sends into vertical preheater 1 top by feeding system, flows through the gap between multiple thin-walled heat exchanging chamber from top to bottom.The hot blast being cooled to about 300 ~ 400 DEG C through mixed wind from pyrolysis kiln 3 tail end is then entered by inlet pipe, by inlet pipe by hot blast uniformly distributing to each heat exchanging chamber, fine coal is from top to bottom in moving process and heat exchanging chamber exterior surface, conducted by partition, fine coal temperature is increased to 200 ~ 300 DEG C gradually, and then realizes dehydration and heat up.The water vapor removed rises gradually and is discharged by top.Hot blast is with in the heat transfer process of fine coal, and temperature constantly declines, and finally reaches about 100 DEG C, under the effect of rear portion exhaust blower, discharges via vapor pipe.
Fine coal after preheating is entered in pyrolysis kiln 3 cylindrical shell by pan feeding spiral 2, and in the rotary course of cylindrical shell, the inclination by cylindrical shell realizes by the movement of feeding end to discharge end.The temperature provided by hotblast stove 4 system is that the hot blast of 700 ~ 800 DEG C evenly enters in many groups heating tube of inner barrel, and in the process flowed to the other end, conducted and radiation by tube wall, pyrolysis kiln 3 cylindrical shell will be entered, and the fine coal be positioned at outside heating tube is heated to 400 ~ 550 DEG C further, realize the pyrolysis of fine coal with this.
Big particle is first carried out sedimentation by sedimentation connecting box 5 by the pyrolysis gas about discharge end temperature to 500 DEG C, import to rear end high temperature filtration device 6 again, enter the pyrolysis gas of first step cavity, under centrifugal action, the coarse particles being greater than more than 10 microns is separated in gas rotating process, and is discharged by bottom ash discharging hole.Enter the bottom of second stage cavity again via vapor pipe through the gas of coarse filtration, in the process of moving upward, through the strainer tube that a group is fixed on the supporting plate, the particle being greater than more than 1 micron is filtered pipe obstruct at outer tube surface, purified gas is inner through chimney filter, is finally discharged by the pneumatic outlet on top.Be arranged in the anti-blowpipe on cavity top, under the control of blowback air system, be periodically blown into the hot nitrogen of certain pressure to inner surface of tube.Under the effect of blowback strength, the particulate matter being deposited on outer tube surface comes off downwards and is discharged by ash discharging hole.
Via the hot blast of many group heating tubes, to be conducted by tube wall and radiation makes the outer fine coal intensification pyrolysis of pipe, self be cooled to after about 500 ~ 600 DEG C and discharged by the feed end of pyrolysis kiln 3.Part hot blast enters vertical preheater 1, for preheating fine coal after mixed wind cooling.Rest part hot blast is then got back to hotblast stove 4 through recirculation blower and is entered hot air circulating system.
The semicoke formed after pulverized coal pyrolysis enters semicoke cooling residual heat retrieving arrangement 7.Complete totally enclosed semicoke cooling residual heat retrieving arrangement 7 is furnished with many heat transfer tubes along stream direction.During work, under the effect of hydro-cylinder, the semicoke particle on level comb formula semicoke cold bed is stepwise alternated moving forward, and water coolant then predicts flow path direction at Bottomhole pressure, and semicoke particle and heat-eliminating medium realize heat exchange by tube wall.Medium temperature progressively raises, and semicoke temperature progressively reduces.Cooled semicoke, discharge at the level comb formula semicoke cold bed the other end, the steam generated after heat exchange is discharged by drum 8, for the production of line recycle.
Above embodiment is only for illustration of the utility model; and be not limitation of the utility model; the those of ordinary skill of relevant technical field; when not departing from spirit and scope of the present utility model; can also make a variety of changes and modification; therefore all equivalent technical schemes also belong to category of the present utility model, and scope of patent protection of the present utility model should be defined by the claims.
Claims (6)
1. a mass-producing low order fine coal low temperature pyrogenation device, it is characterized in that, comprise vertical preheater, pan feeding spiral, pyrolysis kiln, air heating stove, sedimentation connecting box, high temperature filtration device, semicoke cooling residual heat retrieving arrangement and drum, the discharge gate of described vertical preheater is connected with pan feeding spiral, described pan feeding spiral is connected with pyrolysis kiln, the pyrolysis gas outlet of pyrolysis kiln is connected with sedimentation fishing box, described sedimentation fishing box is connected with high temperature filtration device, the semicoke outlet of described pyrolysis kiln is connected with semicoke cooling residual heat retrieving arrangement, the vapour outlet of semicoke cooling residual heat retrieving arrangement is connected with drum, the air outlet of air heating stove is connected with the blast inlet of pyrolysis kiln, the exhaust outlet of pyrolysis kiln is connected with the blast inlet of vertical preheater and the blast inlet of air heating stove respectively.
2. a kind of mass-producing low order fine coal low temperature pyrogenation device as claimed in claim 1, it is characterized in that, vertical preheater forms primarily of inlet pipe, thin-walled heat exchanging chamber, vapor pipe and body skin.
3. a kind of mass-producing low order fine coal low temperature pyrogenation device as claimed in claim 1, it is characterized in that, described pyrolysis kiln is Multi-tube heating rotary type pyrolysis kiln, forms primarily of rotating cylinder, heating tube, riding wheel apparatus, transmission system and gas directing system.
4. a kind of mass-producing low order fine coal low temperature pyrogenation device as claimed in claim 1; it is characterized in that; described semicoke cooling at least comprises level comb formula semicoke cold bed with waste-heat recovery device, and level comb formula semicoke cold bed is made up of grate conveying assembly, rolling support unit and hydraulic propelling system.
5. a kind of mass-producing low order fine coal low temperature pyrogenation device as claimed in claim 1; it is characterized in that; described high temperature filtration device is pyrolysis gas twin-stage high temperature filtration device; adopt compact structure; two-step purification is had to form; the first step adopts cyclone cylinder centrifugation, and the second stage is that high temperature chimney filter filters, and filtrable dust size is to micron order.
6. a kind of mass-producing low order fine coal low temperature pyrogenation device as claimed in claim 2, it is characterized in that, the cross section of described thin-walled heat exchanging chamber is rectangle.
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| CN201520060968.3U CN204417407U (en) | 2015-01-28 | 2015-01-28 | A kind of mass-producing low order fine coal low temperature pyrogenation device |
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| CN201520060968.3U CN204417407U (en) | 2015-01-28 | 2015-01-28 | A kind of mass-producing low order fine coal low temperature pyrogenation device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104593026A (en) * | 2015-01-28 | 2015-05-06 | 中国重型机械研究院股份公司 | Device and method for large-scale low-temperature pyrolysis of low-rank coal powder |
| CN106642041A (en) * | 2017-01-16 | 2017-05-10 | 西安三瑞实业有限公司 | Energy step recovery method and device for solid pyrolysis process |
-
2015
- 2015-01-28 CN CN201520060968.3U patent/CN204417407U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104593026A (en) * | 2015-01-28 | 2015-05-06 | 中国重型机械研究院股份公司 | Device and method for large-scale low-temperature pyrolysis of low-rank coal powder |
| CN104593026B (en) * | 2015-01-28 | 2017-06-09 | 中国重型机械研究院股份公司 | A kind of scale low order fine coal low temperature pyrogenation device and method |
| CN106642041A (en) * | 2017-01-16 | 2017-05-10 | 西安三瑞实业有限公司 | Energy step recovery method and device for solid pyrolysis process |
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