CN104893762B - Raw gas ash disposal system - Google Patents
Raw gas ash disposal system Download PDFInfo
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- CN104893762B CN104893762B CN201510325569.XA CN201510325569A CN104893762B CN 104893762 B CN104893762 B CN 104893762B CN 201510325569 A CN201510325569 A CN 201510325569A CN 104893762 B CN104893762 B CN 104893762B
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- heat exchanger
- water
- useless pot
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- scrubbing tower
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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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Abstract
The present invention relates to a kind of raw gas ash disposal system, including gasification furnace, accurate filter, first useless pot, second useless pot, scrubbing tower, the raw gas outlet connection accurate filter bottom of gasification furnace, the bottom inlet of the useless pot of top exit connection first of accurate filter, the bottom inlet of the useless pot of top exit connection second of the first useless pot, the top exit of the second useless pot connects the bottom inlet of scrubbing tower, the top exit of scrubbing tower is sequentially connected the first boiler feedwater heat exchanger, second boiler feedwater heat exchanger, desalination water- to-water heat exchanger, Heat Exchanger in Circulating Water System and gas-liquid separator.By setting accurate separator, compared with original technique, reduce the use of process water in the outlet of gasification furnace raw gas, the yield of dust-laden waste water is reduced, the pressure of biochemical treatment is reduced；By setting up a useless pot, realize waste heat squeezes utilization to greatest extent more；The yield of system greasy filth greatly reduces, and the shower water of scrubbing tower and aftertreatment systems consumption greatly reduces.
Description
Technical field
The present invention relates to separation ash disposal field, ash disposal system is separated more particularly, to a kind of gasification furnace raw gas.
Background technology
Due to the development of Coal Gasification Technology, Coal Chemical Industry was quickly grown in China in recent years, and it is former to provide basic chemical industry for China
Material, guarantee energy resource supply serve positive effect；The raw gas content of ashes of gasification furnace generation, temperature are higher, follow-up
Before system is utilized, ash disposal, the dust in cooling system removing raw gas, reduction temperature, current cool-down method are first passed through
Be by pot destroying process realize cooling while byproduct steam, the method for ash disposal is to use HTHP water washing, as shown in Figure 2
It is existing ash disposal system, has the following disadvantages：1st, substantial amounts of high-temperature high pressure water will be consumed by washing cold tower, while producing substantial amounts of contain
Dirt waste water, pressure is brought to biochemical treatment；2nd, the high level heat in raw gas, which is entered, washes the high-temperature high pressure water of cold tower and takes away,
It is not carried out recycling；3rd, preceding system except dust it is not thorough, cause the oily substance carried in script gas to be mixed with dust
After form greasy filth, influence line clogging, in order to not make greasy filth block pipeline, scrubbing tower and follow-up system need to consume substantial amounts of spray
Water.
The content of the invention
In order to overcome drawbacks described above, the invention provides a kind of raw gas ash disposal system, the use of process water is reduced, is reduced
The yield of dust-laden waste water, reduces the pressure of biochemical treatment, and realize waste heat squeeze utilization to greatest extent.
The technical solution adopted for the present invention to solve the technical problems is：A kind of raw gas ash disposal system, including gasification furnace,
Accurate filter, the first useless pot, the second useless pot, scrubbing tower, the raw gas outlet connection accurate filter bottom of gasification furnace is accurate
The bottom inlet of the useless pot of top exit connection first of filter, the bottom of the useless pot of top exit connection second of the first useless pot is entered
Mouthful, the top exit of the second useless pot connects the bottom inlet of scrubbing tower, the top exit of scrubbing tower be sequentially connected the first boiler to
Water- to-water heat exchanger, the second boiler feedwater heat exchanger, desalination water- to-water heat exchanger, Heat Exchanger in Circulating Water System and gas-liquid separator.
In the preferred embodiment of the present invention, the outlet at bottom of accurate filter is connected with grey lock, thick for holding
The dust filtered down in coal gas.
In the preferred embodiment of the present invention, the bottom for washing tower is additionally provided with circulating pump, the import and washing of circulating pump
The bottom connection of tower, the outlet of circulating pump and the top of scrubbing tower are connected, and circulating pump is also connected with outer flowing line.
In the preferred embodiment of the present invention, the top exit of scrubbing tower is connected at the top of the first boiler feedwater heat exchanger
Import, the outlet at bottom of the first boiler feedwater heat exchanger connects the import of the second boiler feedwater heat exchanger, and the second boiler feedwater is changed
The import of the outlet connection desalination water- to-water heat exchanger of hot device, the outlet at bottom of desalination water- to-water heat exchanger connects the top of Heat Exchanger in Circulating Water System
Import.
In the preferred embodiment of the present invention, shower pipe is led in first useless pot of bottom connection first, is pressed and is steamed in the connection of top
Shower pipe, top connection and low-pressure steam pipeline are led in steam pipe road, second useless pot of bottom connection second.
The beneficial effects of the invention are as follows：By setting accurate separator in the outlet of gasification furnace raw gas, with original technique phase
Than dust removing effects become apparent from, while reducing the use of process water, reduce the yield of dust-laden waste water, reduce the pressure of biochemical treatment
Power；Furthermore compared with original technique, by setting up a useless pot more, can by the high level heat in raw gas to greatest extent by
Utilization is squeezed to produce steam, realize waste heat squeezes utilization to greatest extent；Finally compared with original technique, system greasy filth
Yield greatly reduces, and the shower water of scrubbing tower and aftertreatment systems consumption greatly reduces.
Brief description of the drawings
Fig. 1 is present system structural representation；
Fig. 2 is system structure diagram before improving.
Embodiment
Presently preferred embodiments of the present invention is described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, apparent is clearly defined so as to be made to protection scope of the present invention.
A kind of raw gas ash disposal system as shown in Figure 1, including gasification furnace 1, accurate filter 2, the first useless pot 4, second gives up
Pot 5, scrubbing tower 10, raw gas outlet connection accurate filter 2 bottom of gasification furnace 1, the top exit connection of accurate filter 2
The bottom inlet of first useless pot 4, the bottom inlet of the useless pot 5 of top exit connection second of the first useless pot 4, the top of the second useless pot 5
The bottom inlet of portion outlet connection scrubbing tower 10, the top exit of scrubbing tower 10 is sequentially connected the first boiler feedwater heat exchanger 12,
Second boiler feedwater heat exchanger 13, desalination water- to-water heat exchanger 14, Heat Exchanger in Circulating Water System 15 and gas-liquid separator 16.
The outlet at bottom of accurate filter 2 is connected with ash lock 3.
The bottom of scrubbing tower 10 is additionally provided with circulating pump 11, and the import of circulating pump 11 is connected with the bottom of scrubbing tower 10, circulation
The outlet of pump 11 is connected with the top of scrubbing tower 10, and circulating pump 10 is also connected with outer flowing line.
The top exit connection top inlet of the first boiler feedwater heat exchanger 12 of scrubbing tower 10, the first boiler feedwater heat exchanger
12 outlet at bottom connects the import of the second boiler feedwater heat exchanger 13, the outlet connection desalination of the second boiler feedwater heat exchanger 13
The import of water- to-water heat exchanger 14, the outlet at bottom of desalination water- to-water heat exchanger 14 connects the top inlet of Heat Exchanger in Circulating Water System 15.
Shower pipe 8, top connection Medium Pressure Steam Pipeline 6, the second useless bottom of pot 5 connection are led in the first useless bottom of pot 4 connection first
Second leads shower pipe 9, top connection and low-pressure steam pipeline 7.
The raw gas produced from gasification furnace 1 passes out to the import of the bottom of accurate filter 2 through middle part, through filter core（Ceramics or
Metal）The dust in raw gas is separated with coal gas after filtering, dust lowers into discharge system after ash lock 3, clean after filtering
Purified gas sequentially enters the heat in the useless pot 4 being connected in series, useless pot 5, gas recovery and pressed in producing respectively, low-pressure steam,
Discharged through Medium Pressure Steam Pipeline and low-pressure steam pipeline, the tar by-product containing a small amount of water that condensation is produced in coal gas temperature-fall period
Product first lead shower pipe 8, second lead the discharge system of shower pipe 9 by the pot 4 that gives up, the useless bottom head of pot 5, from the useless top of pot 5 out
Coal gas washes away oily substance therein into scrubbing tower 10 and then sequentially enters boiler feedwater heat exchanger 12, boiler feedwater heat exchanger
13rd, desalination water- to-water heat exchanger 14, Heat Exchanger in Circulating Water System 15 are cooled and reclaim heat step by step, and sharp during heat is reclaimed
The oily substance in gas is further washed away with sprinkling shower water.Gas finally enters gas-liquid separator 16 and carries out gas-liquid separation
Gas phase sends into subsequent processing afterwards.
When the change of accurate filter inlet outlet pressure differential is big, illustrates that filter core top layer is adsorbed with a large amount of dusts, now pass through and introduce
More than 500 DEG C of high-temperature steam carries out blowback, you can reduction pressure difference, is continuing with.
It is system structure diagram before improving as shown in Figure 2, first, the raw gas that gasification furnace 1 is produced is passed out to through middle part
The upper gas import of cold tower 2 is washed, high-temperature high pressure water enters the part ash washed and washed off in cold tower 2 in raw gas by pipeline 7
Dirt, while the tentatively temperature of reduction raw gas, by wash it is cold after raw gas the bottom of useless pot 3 is entered from the bottom for washing cold tower 2,
The dust-containing water washed simultaneously after cold raw gas enters the bottom of useless pot 3 from the bottom for washing cold tower 2, and dust-laden waste water is pooled to the useless bottom of pot 3
Portion, be partly sent to by circulating pump 10 wash cold tower 2 middle and upper part realize recycle, be partly expelled directly out system, washed it is cold after
Raw gas further enter the middle part of separator 4 after reduction temperature from the top of useless pot 3 in useless pot 3, enter in separator 4
Row gas-liquid separation, liquid phase is discharged into the bottom of useless pot 3 from the tapering of separator, and the gas phase come out from the top of separator 4 is entered
Scrubbing tower 5 is washed again by high pressure spray jetting, is further removed the dust in gas, is washed away oily substance and cool again,
The middle and upper part of raw gas from scrubbing tower 5 after washing again is again introduced into separator 6 and carries out gas-liquid separation, and liquid phase is pooled to point
From the bottom tapering of device 6, the middle and upper part that a part is sent to scrubbing tower 5 by circulating pump 11, which is realized, to be recycled, and remainder is direct
Give off system.The gas sent out from the top of separator 6 sequentially enters boiler feedwater heat exchanger 12, boiler feedwater heat exchanger
13rd, desalination water- to-water heat exchanger 14, Heat Exchanger in Circulating Water System 15 are cooled and reclaim heat step by step, and sharp during heat is reclaimed
The oily substance in gas is further washed away with sprinkling shower water.Gas finally enters gas-liquid separator 16 and carries out gas-liquid separation
Gas phase sends into subsequent processing afterwards.
Knowable to ash disposal system before improving and after improvement is contrasted, by setting accurate in the outlet of gasification furnace raw gas
Separator, compared with original technique, dust removing effects become apparent from, while reducing the use of process water, reduce the generation of dust-laden waste water
Amount, reduces the pressure of biochemical treatment；Furthermore, can be by raw gas by setting up a useless pot compared with original technique more
High level heat is squeezed utilization to produce steam to greatest extent, and realize waste heat squeezes utilization to greatest extent；Finally with original
Carry out technique to compare, the yield of system greasy filth greatly reduces, the shower water of scrubbing tower and aftertreatment systems consumption greatly reduces.
It is emphasized that：Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention,
Equivalent structure or equivalent flow conversion that every utilization description of the invention and accompanying drawing content are made, or be directly or indirectly used in
Other related technical fields, are included within the scope of the present invention.
Claims (3)
1. a kind of raw gas ash disposal system, it is characterised in that：Including gasification furnace（1）, accurate filter（2）, the first useless pot（4）,
Second useless pot（5）, scrubbing tower（10）, the gasification furnace（1）Raw gas outlet connection accurate filter（2）Bottom, the essence
Close filter（2）The useless pot of top exit connection first（4）Bottom inlet, the first useless pot（4）Top exit connection second
Useless pot（5）Bottom inlet, the second useless pot（5）Top exit connection scrubbing tower（10）Bottom inlet, the scrubbing tower
（10）Top exit be sequentially connected the first boiler feedwater heat exchanger（12）, the second boiler feedwater heat exchanger（13）, desalted water changes
Hot device（14）, Heat Exchanger in Circulating Water System（15）And gas-liquid separator（16）, the scrubbing tower（10）Top exit connect first pot
Stove is to water- to-water heat exchanger（12）Top inlet, the first boiler feedwater heat exchanger（12）Outlet at bottom connect the second boiler feedwater
Heat exchanger（13）Import, the second boiler feedwater heat exchanger（13）Outlet connection desalination water- to-water heat exchanger（14）Import,
The desalination water- to-water heat exchanger（14）Outlet at bottom connection Heat Exchanger in Circulating Water System（15）Top inlet, the described first useless pot（4）
Shower pipe is led in bottom connection first（8）, top connection Medium Pressure Steam Pipeline（6）, the described second useless pot（5）Pouring is led in bottom connection second
Pipe（9）, top is connected and low-pressure steam pipeline（7）.
2. raw gas ash disposal system according to claim 1, it is characterised in that：The accurate filter（2）Outlet at bottom
It is connected with grey lock（3）.
3. raw gas ash disposal system according to claim 1, it is characterised in that：The scrubbing tower（10）Bottom be additionally provided with and follow
Ring pump（11）, the circulating pump（11）Import and scrubbing tower（10）Bottom connection, circulating pump（11）Outlet and scrubbing tower
（10）Top connection, circulating pump（11）It is also connected with outer flowing line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510325569.XA CN104893762B (en) | 2015-06-15 | 2015-06-15 | Raw gas ash disposal system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510325569.XA CN104893762B (en) | 2015-06-15 | 2015-06-15 | Raw gas ash disposal system |
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| CN104893762A CN104893762A (en) | 2015-09-09 |
| CN104893762B true CN104893762B (en) | 2017-07-14 |
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| CN201510325569.XA Active CN104893762B (en) | 2015-06-15 | 2015-06-15 | Raw gas ash disposal system |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4333510C1 (en) * | 1993-10-01 | 1995-01-12 | Gutehoffnungshuette Man | Process and apparatus for treating flue gases from waste incineration plants |
| CN101161792A (en) * | 2007-09-29 | 2008-04-16 | 上海惠生化工工程有限公司 | Heat recovering technique for synthetic gas production process by coal gasification |
| CN101451173A (en) * | 2007-11-28 | 2009-06-10 | 中冶赛迪工程技术股份有限公司 | Converter gas dry method pocket type purification and recovery process and system |
| CN102154035A (en) * | 2011-03-01 | 2011-08-17 | 安徽淮化股份有限公司 | Fuel gas and tail gas exhaust device |
| CN102199453A (en) * | 2011-04-01 | 2011-09-28 | 青岛科技大学 | Improved Lurgi gasification furnace waste heat recovering method and device |
| CN102492490A (en) * | 2011-11-30 | 2012-06-13 | 中国五环工程有限公司 | Gas purification process and system |
| CN202610195U (en) * | 2012-06-01 | 2012-12-19 | 中国石油和化工勘察设计协会煤化工设计技术中心 | Device for preparing ammonia synthesis gas through pressurization and continuous gasification of anthracite |
| CN103789045A (en) * | 2014-01-21 | 2014-05-14 | 成都易态科技有限公司 | Dry-method purifying and recycling process for dry distillation gas and mixed type gas condensation device |
| CN204779502U (en) * | 2015-06-15 | 2015-11-18 | 林兆晟 | Raw gas ash removal system |
-
2015
- 2015-06-15 CN CN201510325569.XA patent/CN104893762B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4333510C1 (en) * | 1993-10-01 | 1995-01-12 | Gutehoffnungshuette Man | Process and apparatus for treating flue gases from waste incineration plants |
| CN101161792A (en) * | 2007-09-29 | 2008-04-16 | 上海惠生化工工程有限公司 | Heat recovering technique for synthetic gas production process by coal gasification |
| CN101451173A (en) * | 2007-11-28 | 2009-06-10 | 中冶赛迪工程技术股份有限公司 | Converter gas dry method pocket type purification and recovery process and system |
| CN102154035A (en) * | 2011-03-01 | 2011-08-17 | 安徽淮化股份有限公司 | Fuel gas and tail gas exhaust device |
| CN102199453A (en) * | 2011-04-01 | 2011-09-28 | 青岛科技大学 | Improved Lurgi gasification furnace waste heat recovering method and device |
| CN102492490A (en) * | 2011-11-30 | 2012-06-13 | 中国五环工程有限公司 | Gas purification process and system |
| CN202610195U (en) * | 2012-06-01 | 2012-12-19 | 中国石油和化工勘察设计协会煤化工设计技术中心 | Device for preparing ammonia synthesis gas through pressurization and continuous gasification of anthracite |
| CN103789045A (en) * | 2014-01-21 | 2014-05-14 | 成都易态科技有限公司 | Dry-method purifying and recycling process for dry distillation gas and mixed type gas condensation device |
| CN204779502U (en) * | 2015-06-15 | 2015-11-18 | 林兆晟 | Raw gas ash removal system |
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| CN104893762A (en) | 2015-09-09 |
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