CN204689941U - A kind of low order pulverized coal pyrolysis and char Gasification recombining process device - Google Patents
A kind of low order pulverized coal pyrolysis and char Gasification recombining process device Download PDFInfo
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- CN204689941U CN204689941U CN201520200453.9U CN201520200453U CN204689941U CN 204689941 U CN204689941 U CN 204689941U CN 201520200453 U CN201520200453 U CN 201520200453U CN 204689941 U CN204689941 U CN 204689941U
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- pyrolysis
- char gasification
- pulverized coal
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- waste heat
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- 238000000197 pyrolysis Methods 0.000 title claims abstract description 68
- 239000003245 coal Substances 0.000 title claims abstract description 43
- 238000002309 gasification Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000002918 waste heat Substances 0.000 claims abstract description 26
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 239000007789 gas Substances 0.000 claims abstract description 22
- 238000001914 filtration Methods 0.000 claims abstract description 14
- 239000010802 sludge Substances 0.000 claims abstract description 10
- 238000010276 construction Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 4
- 239000005995 Aluminium silicate Substances 0.000 claims description 3
- PZZYQPZGQPZBDN-UHFFFAOYSA-N aluminium silicate Chemical compound O=[Al]O[Si](=O)O[Al]=O PZZYQPZGQPZBDN-UHFFFAOYSA-N 0.000 claims description 3
- 229910000323 aluminium silicate Inorganic materials 0.000 claims description 3
- 235000012211 aluminium silicate Nutrition 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000011084 recovery Methods 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 abstract description 4
- 239000002737 fuel gas Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 description 6
- 238000005192 partition Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000000428 dust Substances 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
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005243 fluidization Methods 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000008239 natural water Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
-
- 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
-
- 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
Abstract
A kind of low order pulverized coal pyrolysis and char Gasification recombining process device, comprise vertical preheater, vertical preheater is connected with pan feeding spiral, pan feeding spiral is connected with pyrolysis kiln, pyrolysis kiln one tunnel is connected with preheater, and a road is connected with air heating stove, and air heating stove is connected with pyrolysis kiln; Pyrolysis kiln is connected with sludge box, and sludge box is connected with high temperature filtration device; Pyrolysis kiln is connected with char Gasification stove, and char Gasification stove is connected with cyclonic separator, and cyclonic separator is connected with waste heat boiler, and cyclonic separator is connected with char Gasification stove, and waste heat boiler is connected by pipe with drum; Low order fine coal is first by preheater preheats to 200 ~ 300 DEG C, and enter Multi-tube heating rotary type pyrolysis kiln afterwards and to be heated pyrolysis, pyrolysis gas enters subsequent filter and cooling process device.The utility model can realize pulverized coal pyrolysis and semicoke direct gasification is close-coupled processing, effectively utilizes the direct Fuel gas of hot semicoke or unstripped gas simultaneously, make use of the waste heat of semicoke efficiently, eliminate the semicoke waste heat recovery process of numerous and diverse poor efficiency.
Description
Technical field
The utility model belongs to technical field of coal chemical industry, particularly a kind of low order pulverized coal pyrolysis and char Gasification recombining process 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 pyrolysis gas, tar and high heating value by pyrolysis.To output is comparatively large in the market, the low order fine coal of not easily direct marketing again, adopt low temperature pyrogenation method, fully realize its economic worth, meaning is larger.
But current existing low-temperature pyrolysis of coal system, be also mostly limited to the small-scale production process system that only can process lump coal, environmental protection and economic performance are all poor.Some low temperature pyrogenation devices 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.In addition, said apparatus also all lacks efficient semicoke treatment system, and the high-temperature semi-coke of generation needs cooling, is used further to produce pulverized coal injection in blast furnace or for generating.Although semicoke waste heat takes recovery measure, organic efficiency is low, and energy wastage is serious.
Inquire about existing low-rank coal pyrolytic process patent, also have the rotary type pyrolytic process system can carrying out pulverized coal pyrolysis, but all belong to the process system not configuring external placed type preheater and fluidized bed semicoke direct gasification.
Summary of the invention
For overcoming the deficiency of above-mentioned existing pyrolytic process technology, the purpose of this utility model is to provide a kind of low order pulverized coal pyrolysis and char Gasification recombining process device, for enormous amount in the market and reluctant low order fine coal, the utility model can realize pulverized coal pyrolysis and semicoke direct gasification is close-coupled processing, pyrolysis gas can be provided, effectively utilize the direct Fuel gas of hot semicoke or unstripped gas simultaneously, make use of the waste heat of semicoke more efficiently, eliminate the semicoke waste heat recovery process of numerous and diverse poor efficiency.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of low order pulverized coal pyrolysis and char Gasification recombining process device, comprise vertical preheater 1, the discharge gate of vertical preheater 1 is connected with pan feeding spiral 2 import, and pan feeding spiral 2 outlet is connected with the helicoid pyrolysis kiln 3 of Multi-tube heating.The exhaust outlet of pyrolysis kiln 3 is divided into two-way, and a road is connected with the blast inlet of preheater 1, and a road is connected with the blast inlet of air heating stove 4, and the air outlet of air heating stove 4 is connected with the blast inlet of pyrolysis kiln 3; The pyrolysis gas outlet of pyrolysis kiln 3 is connected with sludge box 5 entrance, and sludge box 5 outlet is connected with high temperature filtration device 6 entrance; The semicoke outlet of pyrolysis kiln 3 is connected with char Gasification stove 7 opening for feed, the outlet of char Gasification stove 7 upper gas is connected with cyclonic separator 8 entrance, the upper outlet of cyclonic separator 8 is connected with waste heat boiler 9, the bottom powder outlet of cyclonic separator 8 is connected with char Gasification stove 7 lower mouth, and waste heat boiler 9 is connected by downtake and upcast with drum 10.
Described vertical preheater 1 adopts septate heat transfer.
Described pyrolysis kiln 3 is Multi-tube heating rotary type, and rotating cylinder inside is provided with many group heating tubes and is bearing on two supporting support rollers, makes it turn round rotation by transmission system; Feed end and the discharge end of rotating cylinder have difference of altitude.
Described high temperature filtration device 6 adopts chimney filter structure.
Described vapourizing furnace 7 adopts fluidization principle of work, and hot small-particle semicoke, without the need to fragmentation, directly enters vapourizing furnace, and under the effect of vaporized chemical, realize gasification, vaporized chemical is air-steam, or adopts oxygen.
Described waste heat boiler 9 is vertical structure, adopts partition tubular type heat transfer tube and natural water circulation principle of work, and water coolant is by entering in heat transfer tube bottom waste heat boiler, and by the outer gas converting heat flowed of tube wall and pipe, the steam of generation enters drum.
Described vertical preheater 1,3 pyrolysis kiln, high temperature filtration device 6, vapourizing furnace 7, waste heat boiler 9 and connecting pipeline all adopt insulation construction, and lagging material is the material that pure aluminium silicate or performance are similar.
Native system and existing similar system compare, and the beneficial effects of the utility model are:
A, pyrolysis installation are formed by preheater and pyrolysis kiln series combination, and System's composition is simple, and process structure is reasonable.Method for pyrolysis have employed indirect heating type Multi-tube heating wind circulation pyrolysis principle, and the gas active constituent content of generation is high, and economic worth is large.
B, novel process are applicable to large-scale production, separate unit year processing power can reach 1,000,000 tons, be suitable for carrying out the pyrolysis of mass-producing and integrated gasification combined processing line construction, flow process is compact, good economy performance.
C, high-temperature semi-coke directly gasify, and take full advantage of semicoke waste heat, avoid the thermosteresis in conventional semicoke waste heat recovery process, improve the thermo-efficiency of process system, also achieve the high-efficiency comprehensive utilization of semicoke.
D, novel process system be realize coal, oil, gas, change multi-production process create condition.
Accompanying drawing explanation
Accompanying drawing is structure flow chart of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
A kind of low order pulverized coal pyrolysis and char Gasification recombining process device, comprise vertical preheater 1, pan feeding spiral 2, pyrolysis kiln 3, air heating stove 4, sludge box 5, high temperature filtration device 6, char Gasification stove 7, cyclonic separator 8, waste heat boiler 9 and drum 10;
The discharge gate of vertical preheater 1 is connected with pan feeding spiral 2 import, and pan feeding spiral 2 outlet is connected with the helicoid pyrolysis kiln 3 of Multi-tube heating.The exhaust outlet of pyrolysis kiln 3 is divided into two-way, and a road is connected with the blast inlet of preheater 1, and a road is connected with the blast inlet of air heating stove 4, and the air outlet of air heating stove 4 is connected with the blast inlet of pyrolysis kiln 3; The pyrolysis gas outlet of pyrolysis kiln 3 is connected with sludge box 5 entrance, and sludge box 5 outlet is connected with high temperature filtration device 6 entrance; The semicoke outlet of pyrolysis kiln 3 is connected with char Gasification stove 7 opening for feed, the outlet of char Gasification stove 7 upper gas is connected with cyclonic separator 8 entrance, the upper outlet of cyclonic separator 8 is connected with waste heat boiler 9, the bottom powder outlet of cyclonic separator 8 is connected with char Gasification stove 7 lower mouth, and waste heat boiler 9 is connected by downtake and upcast with drum 10.
Described vertical preheater 1 adopts septate heat transfer, and during work, fine coal enters via housing upper, and hot blast is then entered by inlet pipe, is conducted by partition, and thermal medium is with in the heat transfer process of fine coal, and temperature constantly declines, and fine coal temperature then constantly raises.
Described pyrolysis kiln 3 is Multi-tube heating rotary type, and rotating cylinder inside is provided with many group heating tubes and is bearing on two supporting support rollers, makes it turn round rotation by transmission system; Feed end and the discharge end of rotating cylinder have difference of altitude, move to realize stream in cylindrical shell.
Described high temperature filtration device 6 adopts chimney filter structure, and dusty gas outer enter through chimney filter surface in pipe by managing and to realize filtering, and tube wall sinks the dust collected and regularly removed by pulse jet gas.
Described vapourizing furnace 7 adopts fluidization principle of work, and hot small-particle semicoke, without the need to fragmentation, directly enters vapourizing furnace, and under the effect of vaporized chemical, realize gasification, vaporized chemical is air-steam, or adopts oxygen.
Described waste heat boiler 9 is vertical structure, adopts partition tubular type heat transfer tube and natural water circulation principle of work, and water coolant is by entering in heat transfer tube bottom waste heat boiler, and by the outer gas converting heat flowed of tube wall and pipe, the steam of generation enters drum.
Described vertical preheater 1,3 pyrolysis kiln, high temperature filtration device 6, vapourizing furnace 7, waste heat boiler 9 and connecting pipeline all adopt insulation construction, and lagging material is the material that pure aluminium silicate or performance are similar.
Workflow step of the present utility model is as follows:
During work, particle diameter is less than the fine coal of 10mm, sends into preheater 1 top, flow through the gap between multiple thin-walled heat exchanging chamber from top to bottom by feeding system.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 scroll feeder 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.
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 partition fine coal 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 hot semicoke formed after pulverized coal pyrolysis directly enters fluidized bed semicoke vapourizing furnace 7 and gasifies.The semicoke entering vapourizing furnace forms fluidized under the effect by the air entered bottom vapourizing furnace and steam, and at high temperature realize gasification, the gas produced enters cyclonic separator 8 by vapourizing furnace top, and isolated semicoke particle returns in vapourizing furnace and continues gasification.Enter waste heat boiler 9 after divided gas flow to be discharged by bottom after waste heat recovery cooling, the steam produced in the process converges in drum 10, and can be used as the vaporized chemical of vapourizing furnace.
The pyrolysis gas that pulverized coal pyrolysis produces enters sludge box 5, first make macrobead sedimentation, reduce gas dust content, and then enter filter tube type high temperature filtration device 6, dusty gas in the outer flowing of pipe, and to enter through chimney filter surface in pipe and to realize filtering, and tube wall sinks the dust layer that collects by the nitrogen being heated to be not less than 200 DEG C, control through pulse blowing valve, periodic reverse winding-up is removed.
Claims (6)
1. a low order pulverized coal pyrolysis and char Gasification recombining process device, it is characterized in that, comprise vertical preheater (1), the discharge gate of vertical preheater (1) is connected with pan feeding spiral (2) import, pan feeding spiral (2) outlet is connected with the helicoid pyrolysis kiln (3) of Multi-tube heating, the exhaust outlet of pyrolysis kiln (3) is divided into two-way, one tunnel is connected with the blast inlet of preheater (1), one tunnel is connected with the blast inlet of air heating stove (4), and the air outlet of air heating stove (4) is connected with the blast inlet of pyrolysis kiln (3); The pyrolysis gas outlet of pyrolysis kiln (3) is connected with sludge box (5) entrance, and sludge box (5) outlet is connected with high temperature filtration device (6) entrance; The semicoke outlet of pyrolysis kiln (3) is connected with char Gasification stove (7) opening for feed, the outlet of char Gasification stove (7) upper gas is connected with cyclonic separator (8) entrance, the upper outlet of cyclonic separator (8) is connected with waste heat boiler (9), the bottom powder outlet of cyclonic separator (8) is connected with char Gasification stove (7) lower mouth, and waste heat boiler (9) is connected by downtake and upcast with drum (10).
2. a kind of low order pulverized coal pyrolysis according to claim 1 and char Gasification recombining process device, is characterized in that, described vertical preheater (1) adopts septate heat transfer.
3. a kind of low order pulverized coal pyrolysis according to claim 1 and char Gasification recombining process device, it is characterized in that, described pyrolysis kiln (3) is Multi-tube heating rotary type, rotating cylinder inside is provided with many group heating tubes and is bearing on two supporting support rollers, makes it turn round rotation by transmission system; Feed end and the discharge end of rotating cylinder have difference of altitude.
4. a kind of low order pulverized coal pyrolysis according to claim 1 and char Gasification recombining process device, is characterized in that, described high temperature filtration device (6) adopts chimney filter structure.
5. a kind of low order pulverized coal pyrolysis according to claim 1 and char Gasification recombining process device, is characterized in that, described waste heat boiler (9) is vertical structure.
6. a kind of low order pulverized coal pyrolysis according to claim 1 and char Gasification recombining process device, it is characterized in that, described vertical preheater (1), pyrolysis kiln (3), high temperature filtration device (6), vapourizing furnace (7), waste heat boiler (9) and connecting pipeline all adopt insulation construction, and the material of insulation construction comprises pure aluminium silicate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520200453.9U CN204689941U (en) | 2015-04-03 | 2015-04-03 | A kind of low order pulverized coal pyrolysis and char Gasification recombining process device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520200453.9U CN204689941U (en) | 2015-04-03 | 2015-04-03 | A kind of low order pulverized coal pyrolysis and char Gasification recombining process device |
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| Publication Number | Publication Date |
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| CN204689941U true CN204689941U (en) | 2015-10-07 |
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| CN201520200453.9U Expired - Fee Related CN204689941U (en) | 2015-04-03 | 2015-04-03 | A kind of low order pulverized coal pyrolysis and char Gasification recombining process device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104726118A (en) * | 2015-04-03 | 2015-06-24 | 中国重型机械研究院股份公司 | Low-rank pulverized coal pyrolysis and semicoke gasification composite process system |
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2015
- 2015-04-03 CN CN201520200453.9U patent/CN204689941U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104726118A (en) * | 2015-04-03 | 2015-06-24 | 中国重型机械研究院股份公司 | Low-rank pulverized coal pyrolysis and semicoke gasification composite process system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 |