CN203247238U - Gas-solid cold state separation device in pulverized coal pyrolysis - Google Patents
Gas-solid cold state separation device in pulverized coal pyrolysis Download PDFInfo
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- CN203247238U CN203247238U CN 201320176286 CN201320176286U CN203247238U CN 203247238 U CN203247238 U CN 203247238U CN 201320176286 CN201320176286 CN 201320176286 CN 201320176286 U CN201320176286 U CN 201320176286U CN 203247238 U CN203247238 U CN 203247238U
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Abstract
The utility model provides a gas-solid cold state separation device in pulverized coal pyrolysis. The device comprises a raw coke oven gas condensation system, a gas purification system, a coal slurry like preparation system and a hydro-treating system, wherein a gas outlet of the raw coke oven gas condensation system is connected with an inlet of the gas purification system; a condensable component outlet of the raw coke oven gas condensation system converges with a tar outlet of the gas purification system and then is connected with a tar inlet of the coal slurry like preparation system; and an outlet of the coal slurry like preparation system is connected with a liquid inlet of the hydro-treating system. Compared with a conventional pulverized coal pyrolysis high-temperature gas-solid on-line treatment technology, the problem that coke breeze and pyrolysis oil gas are difficult to separate in pulverized coal pyrolysis is effectively solved; tar separated from raw coke oven gas isn't taken as a product and isn't discharged directly; however, the tar and condensable components, such as the pulverized coal, coke powder, condensable tar and the like, in the raw coke oven gas are prepared into coal slurry like substances and then prepared into various oil products by the aid of hydro-treating, and the problem of a high dust content of the tar is solved.
Description
Technical field
The utility model belongs to the pyrolysis of coal field, relates to the treatment technology of raw gas in the pyrolysis of coal, is specifically related to the device that the gas-solid cold conditions is separated in a kind of pulverized coal pyrolysis.
Background technology
Coal amount accounts for 70% in the mechanical coal mining, how effectively to use this part fine coal significant, and wherein the pulverized coal pyrolysis technology is the effective way that high-efficiency cleaning utilizes fine coal, and it is one of strategy of country's enforcement energy diversification.
At present, there is a great problem in the pulverized coal pyrolysis technology, it is exactly the high temperature gas-solid ON-LINE SEPARATION problem of pyrolysis coke breeze and pyrolysis oil gas, the fugitive constituent that produces in the pulverized coal pyrolysis process contains condensable gases and non-condensable gases, carry simultaneously the solids such as concentration is large, granularity is little, adhesivity is very strong coal dust and coke powder secretly, dust removal installation is except the dust that does not fall, the tar gas that gets off with condensation, form thick material, can assemble in pipeline, the equipment that affects runs well, in addition, gained tar dustiness is higher, and the tar quality is low.
The utility model content
The utility model purpose is to solve the prior art defective device that the gas-solid cold conditions is separated in a kind of pulverized coal pyrolysis is provided, and coke breeze is difficult to separate the problem high with the tar dustiness of separating with pyrolysis oil gas in the solution pulverized coal pyrolysis.
For achieving the above object, the utility model is by the following technical solutions:
The device that the gas-solid cold conditions is separated in a kind of pulverized coal pyrolysis comprises raw gas condenser system, gas cleaning system, class coal slurry preparation system and hydrotreatment system; The pneumatic outlet of raw gas condenser system is connected with the gas cleaning system entrance, the coagulated component outlet of raw gas condenser system converges afterwards with the tar outlet of gas cleaning system and is connected with the tar entrance of class coal slurry preparation system, and the outlet of class coal slurry preparation system is connected with the liquid inlet of hydrotreatment system.
Described gas cleaning system comprises gas scrubber, electrical tar precipitator and the pressure-swing absorption apparatus that connects successively; The pneumatic outlet of raw gas condenser system is connected with the entrance of gas scrubber, and the hydrogen outlet of pressure-swing absorption apparatus is connected with the hydrogen inlet of hydrotreatment system.
The hydrogen outlet of pressure-swing absorption apparatus is connected with hydrogen-holder, and hydrogen-holder is connected with the hydrogen inlet of hydrotreatment system.
Described hydrotreatment system comprises hydrogenation pretreatment unit, hydrogenator and the high-temperature separator that connects successively; The outlet of class coal slurry preparation system is connected with hydrogenation pretreatment unit entrance, and the hydrogenator outlet links to each other with the high-temperature separator entrance, and the pneumatic outlet of high-temperature separator is connected with the hydrogen inlet of hydrogenator again.
The pneumatic outlet of described high-temperature separator is connected with the gasification cleaner, and the outlet of gasification cleaner is connected with the hydrogen inlet of hydrogenator.
The liquid exit of described high-temperature separator is connected with atmospheric distillation tower and vacuum still in turn.
Described raw gas condenser system is the indirect condensing system, is in series by a plurality of indirect condensers, and described indirect condenser is comprised of inner and outer tubes.
Described class coal slurry preparation system comprises solvent oil storage tank and mixing tank, and the coagulated component outlet of raw gas condenser system converges afterwards with the tar outlet of gas cleaning system and is connected with the tar entrance of mixing tank.
Gas-solid cold conditions tripping device of the present utility model, comprise raw gas condenser system, gas cleaning system, class coal slurry preparation system and hydrotreatment system, through the raw gas condenser system raw gas is cooled and isolated first and can coagulate component and can not coagulate component, can not coagulate component and become the discharge of purification coal gas through gas cleaning system, can coagulate condensability tar that component comprises in raw gas through class coal slurry preparation system, water that pyrolysis produces, and solid coke breeze, coal dust etc. make class coal slurry material, make various oil products by the hydrotreatment system at last; Compare traditional pulverized coal pyrolysis high temperature gas-solid online treatment technology, efficiently solve the problem that coke breeze and pyrolysis oil gas are difficult to separate in the pulverized coal pyrolysis; Isolated tar is not directly discharged as product in the raw gas, but it is made class coal slurry material with coagulating coal dust in the component, coke powder etc., makes at last various oil products by hydrotreatment, solves the high problem of tar dustiness.
The utility model also has following beneficial effect:
1. select suitable solvent oil at class coal slurry preparation system, the coagulated component that contains coal dust, coke powder that pulverized coal pyrolysis produces is made class coal slurry component, further process by hydrogenation, a large amount of coke powders that effectively utilized pulverized coal pyrolysis to produce.
2. the utility model is by the hydrotreatment system, Effective Raise the coal-tar middle oil added value of pulverized coal pyrolysis, produce the attached value oil product of all kinds of height.
3. the device that separates by gas-solid cold conditions of the present utility model solves the fine coal that produces in the mechanical coal mining process and efficiently utilizes the large problem of difficulty.
Description of drawings
Fig. 1 is the structural representation of the utility model device.
Reference numeral implication among the figure is as follows:
1 pyrolysis oven; 2 Semi-coke cooling devices; 3 raw gas condenser systems; 4 indirect condensers; 5 inner tubes; 6 outer tubes; 7 gas scrubbers; 8 electrical tar precipitators; 9 pressure-swing absorption apparatuss; 10 hydrogen-holders; 11 solvent oil storage tanks; 12 mixing tanks; 13 hydrogenation pretreatment units; 14 hydrogenators; 15 high-temperature separators; 16 gas purifiers; 17 atmospheric distillation towers; 18 vacuum stills; 20 raw gas transport pipes; 21 not solidifying component transport pipes; 22 can coagulate the component transport pipe; 24 tar transport pipes; 25 purified gas transport pipes; 26 hydrogen delivery tube roads; 28 solvent oil transport pipes; 29 class coal slurry material transport pipes; 30 hydrogenation reaction feed line roads; 31 hydrogenation reaction product transport pipes; 32 raw hydrogen transport pipes; 34 thick oil product transport pipes.
Embodiment
Below in conjunction with accompanying drawing this is described in detail:
As shown in Figure 1, the utility model comprises pyrolysis of coal system, raw gas condenser system, gas cleaning system, class coal slurry preparation system, hydrotreatment system.Described pyrolysis of coal system is comprised of pyrolysis oven 1, Semi-coke cooling device 2.Raw gas condenser system 3 is the indirect condensing system, be in series by a plurality of indirect condensers, preferred 2-5 indirect condenser is composed in series, described indirect condenser 4 is comprised of inner tube 5 and outer tube 6, inner tube 5 is raw gas passages, outer tube 6 is cooling medium passs, and raw gas and heat-eliminating medium carry out the adverse current indirect heat exchange by inner tube 5 tube walls.Gas cleaning system is comprised of gas scrubber 7, electrical tar precipitator 8, pressure-swing absorption apparatus 9, hydrogen-holder 10.Class coal slurry preparation system is comprised of solvent oil storage tank 11, mixing tank 12.The hydrotreatment system is comprised of hydrogenation pretreatment unit 13, hydrogenator 14, high-temperature separator 15, gasification cleaner 16, atmospheric distillation tower 17, vacuum still 18.
The utility model is by cooling off raw gas first, with solvent oil the coagulated component in the raw gas is made class coal slurry material again, make various oil products by the hydrogenation reaction device at last, condensable components in the pulverized coal pyrolysis raw gas is separated with condensable components not, the concentration of carrying secretly in the oil gas is large, that granularity is little, adhesivity is very strong coal dust and coke powder etc. are dissolved in the solvent oil, solve the problem of coke breeze and pyrolysis oil gas separation difficulty, avoid coal dust in the oil gas treating processes, coke powder and tar formation thick material, assemble in pipeline, the equipment that affects runs well; In addition, gained tar, coke breeze etc. further carry out hydrotreatment, and it is high to form calorific value, and the oil product of high added value avoids tar directly to discharge as product, and the tar dustiness is high, the problem that the tar quality is low.
Further, the coal gas of purification is sent into hydrogenator as the recycle hydrogen recycle again through the isolated hydrogen of the isolated hydrogen of pressure-swing absorption apparatus and hydrotreatment system, has reduced production cost, economizes on resources.
During work, granularity is sent in the pyrolysis oven 1 less than the fine coal of 8mm, pyrolysis produces semicoke and raw gas, semicoke enters in the Semi-coke cooling device 2 and produces semicoke, raw gas enters in the raw gas condenser system 3 through raw gas transport pipe 20, contain in the raw gas and can coagulate component and comprise condensability tar, pyrolysis water etc. and condensable gases CO not, CO
2, H
2Deng, carry simultaneously the solids such as concentration is large, granularity is little, adhesivity is strong coal dust and coke powder secretly.
Raw gas is through the inner tube 5 of indirect condenser, and under the effect of the cool contents of indirect condenser outer tube 6, raw gas is divided into and can coagulates component and can not coagulate component, and cool contents can be recirculated water or cyclic ammonia water herein.
Can not coagulate component and enter gas scrubber 7 through not solidifying component transport pipe 21, the component of can not coagulating behind washing, purifying enters electrical tar precipitator 8 through not solidifying component transport pipe 21, can not coagulate the tar that carries in the component reclaims, gas scrubber 7, the tar that electrical tar precipitator 8 produces compiles by tar transport pipe 24 and enters in the mixing tank 12, as adding the hydrogen source material, coal gas after purifying enters in the pressure-swing absorption apparatus 9 through purified gas transport pipe 25, produce hydrogen and remaining gas, hydrogen enters in the hydrogen-holder 10 hydrogen source as hydrogenation reaction through hydrogen delivery tube road 26, all the other are discharged as product, and hydrogen enters hydrogenator 14 by hydrogen delivery tube road 26.
Can coagulate component is carrying the solid matters such as coal dust, coke powder secretly and is entering mixing tank 12 through coagulating component transport pipe 22, after tar from the solvent oil of solvent oil storage tank 11, tar transport pipe 24 mixes, make class coal slurry material, wherein contain raw gas condensable gases, coal dust, coke powder, tar, solvent wet goods, solvent oil can be one or more in lightweight oil that coal tar, gelatin liquefaction produces, middle matter oil, petroleum residual oil, the hydrogenation polycyclic aromatic hydrocarbons herein, and the hydrogenation polycyclic aromatic hydrocarbons is tetraline, dihydro phenanthrene, dihydroanthracene etc.
Class coal slurry material enters hydrogenation pretreatment unit 13 through class coal slurry material transfer lime 29 first, through preheating, deslagging enters hydrogenation reaction device 14 by hydrogenation reaction feed line road 30, the hydrogenation reaction device can be secondary hydrogenation, also floating bed hydrogenation, hydrogenation products enters high-temperature separator 15 through hydrogenation reaction product transport pipe 31 and carries out gas-liquid separation, gaseous fraction enters gas purifier 16 recover hydrogen components through raw hydrogen transport pipe 32, the hydrogen component that reclaims 26 is converged as recycle hydrogen with hydrogen delivery tube road 26 and to be entered hydrogenator 14 through the hydrogen delivery tube road, also can return hydrogen-holder 10, liquid enters atmospheric distillation tower 17 successively through thick oil product transport pipe 34 to be separated with vacuum still 18, finally is divided into atmospheric distillate, the distillate product that low pressure cut wet goods is different.
Claims (8)
1. the device that the gas-solid cold conditions is separated in the pulverized coal pyrolysis is characterized in that: comprise raw gas condenser system, gas cleaning system, class coal slurry preparation system and hydrotreatment system; The pneumatic outlet of raw gas condenser system is connected with the gas cleaning system entrance, the coagulated component outlet of raw gas condenser system converges afterwards with the tar outlet of gas cleaning system and is connected with the tar entrance of class coal slurry preparation system, and the outlet of class coal slurry preparation system is connected with the liquid inlet of hydrotreatment system.
2. the device that the gas-solid cold conditions is separated in the pulverized coal pyrolysis according to claim 1 is characterized in that: described gas cleaning system comprises gas scrubber (7), electrical tar precipitator (8) and the pressure-swing absorption apparatus (9) that connects successively; The pneumatic outlet of raw gas condenser system is connected with the entrance of gas scrubber (7), and the hydrogen outlet of pressure-swing absorption apparatus (9) is connected with the hydrogen inlet of hydrotreatment system.
3. the device that the gas-solid cold conditions is separated in the pulverized coal pyrolysis according to claim 2, it is characterized in that: the hydrogen outlet of described pressure-swing absorption apparatus (9) is connected with hydrogen-holder (10), and hydrogen-holder (10) is connected with the hydrogen inlet of hydrotreatment system.
4. the device that the gas-solid cold conditions is separated in the pulverized coal pyrolysis according to claim 1 is characterized in that: described hydrotreatment system comprises hydrogenation pretreatment unit (13), hydrogenator (14) and the high-temperature separator (15) that connects successively; The outlet of class coal slurry preparation system is connected with hydrogenation pretreatment unit (13) entrance, hydrogenator (14) outlet links to each other with high-temperature separator (15) entrance, and the pneumatic outlet of high-temperature separator (15) is connected with the hydrogen inlet of hydrogenator (14) again.
5. the device that the gas-solid cold conditions is separated in the pulverized coal pyrolysis according to claim 4, it is characterized in that: the pneumatic outlet of described high-temperature separator (15) is connected with gasification cleaner (16), and gasification cleaner (16) outlet is connected with the hydrogen inlet of hydrogenator (14).
6. the device that the gas-solid cold conditions is separated in the pulverized coal pyrolysis according to claim 4, it is characterized in that: the liquid exit of described high-temperature separator (15) is connected with atmospheric distillation tower (17) and vacuum still (18) in turn.
7. the device that the gas-solid cold conditions is separated in each described pulverized coal pyrolysis according to claim 1～6, it is characterized in that: described raw gas condenser system (3) is the indirect condensing system, be in series by a plurality of indirect condensers (4), described indirect condenser (4) is comprised of inner tube (5) and outer tube (6).
8. the device that the gas-solid cold conditions is separated in each described pulverized coal pyrolysis according to claim 1～6, it is characterized in that: described class coal slurry preparation system comprises solvent oil storage tank (11) and mixing tank (12), and the coagulated component outlet of raw gas condenser system converges afterwards with the tar outlet of gas cleaning system and is connected with the tar entrance of mixing tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320176286 CN203247238U (en) | 2013-04-09 | 2013-04-09 | Gas-solid cold state separation device in pulverized coal pyrolysis |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320176286 CN203247238U (en) | 2013-04-09 | 2013-04-09 | Gas-solid cold state separation device in pulverized coal pyrolysis |
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| CN203247238U true CN203247238U (en) | 2013-10-23 |
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| CN 201320176286 Expired - Lifetime CN203247238U (en) | 2013-04-09 | 2013-04-09 | Gas-solid cold state separation device in pulverized coal pyrolysis |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103215089A (en) * | 2013-04-09 | 2013-07-24 | 陕西煤业化工技术研究院有限责任公司 | Device and method for cold-state separation of gas and solid in pulverized coal pyrolysis |
-
2013
- 2013-04-09 CN CN 201320176286 patent/CN203247238U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103215089A (en) * | 2013-04-09 | 2013-07-24 | 陕西煤业化工技术研究院有限责任公司 | Device and method for cold-state separation of gas and solid in pulverized coal pyrolysis |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131023 |