CN102965155A - Liquid slag solid discharging structure of downward entrained-flow bed gasifier - Google Patents
Liquid slag solid discharging structure of downward entrained-flow bed gasifier Download PDFInfo
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- CN102965155A CN102965155A CN2012104656491A CN201210465649A CN102965155A CN 102965155 A CN102965155 A CN 102965155A CN 2012104656491 A CN2012104656491 A CN 2012104656491A CN 201210465649 A CN201210465649 A CN 201210465649A CN 102965155 A CN102965155 A CN 102965155A
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- gasification
- gasification furnace
- eddy flow
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- relief outlet
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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 invention provides a liquid slag solid discharging structure of a downward entrained-flow bed gasifier. The liquid slag solid discharging structure comprises a downward entrained-flow bed gasifier shell, a gasification product discharging port, a cooling chamber, a rotational flow cooling sleeve, a chilled water atomizer, a cooled coal gas returning port, a coal gas outlet and a solid slag discharging port, wherein the gasification product discharging port is arranged at the center of the bottom of the downward entrained-flow bed gasifier, and the lower part of the downward entrained-flow bed gasifier shell is connected with the cooling chamber; the rotational flow cooling sleeve is arranged at the outer side of the gasification product discharging port, and the upper part of the rotational flow cooling sleeve is communicated with the cooled coal gas returning port; and a chilled water pipe and the atomizer are arranged between the gasification product discharging port and the rotational flow cooling sleeve; and the coal gas outlet is arranged at the upper part of the cooling chamber, and the solid slag discharging port is arranged at the bottom of the cooling chamber. Due to the adoption of the liquid slag solid discharging structure, the afterheat of a gasification product is fully used, and the black water problem is eliminated.
Description
1. technical field
The present invention relates to coal chemical technology, especially, relate to the coal gas fluidized bed gasification.
2. background technology
Gasification is the cleaning and efficient tap and the gordian technique of utilizing of coal.Entrained flow gasification is the New type coal cocurrent flow type gasification technology that grows up nearest decades, vaporized chemical and coal dust or coal slurry enter vaporizer through nozzle, the pyrolysis of coal, burning and gasification reaction almost carry out simultaneously, high temperature has guaranteed being gasified totally of coal, and the mineral substance in the coal leaves vapourizing furnace after becoming slag.Compare with traditional gasification technology, the pressurized entrained-bed gasification temperature is high, processing power is large, gas effective constituent is high, gasification efficiency is high, is following synthetic briquette gasification technology developing direction.
Air-flow bed coal-gasification technique is pressed the emission direction of coal gas at present, can be divided into downstriker and upstriker two classes.All adopt the in the same way lower line mode of following current of gas slag such as Texaco coal water slurry gasification, GSP coal gasification, the opposed airflow bed gasification furnace of four nozzles, slag non-slag classification airflow bed gasification furnace and HT space flight stove etc.Shell vapourizing furnace, F-T vapourizing furnace and two sections airflow bed gasification furnaces of western thermal technology adopted gas upwards, the downward uplink mode of slag.The airflow bed gasification furnace of uplink mode often adopts up pot destroying process, produces high pressure steam, reclaimed the part heat of gas, but the cooled coal gas internal circulating load is large, has increased the loop compression energy consumption.The airflow bed gasification furnace of lower line mode often adopts chilling process, and moisture-laden gas is favourable for the subsequent conversion operation, is suitable as very much the Chemical Manufacture synthetic gas, but energy fails to reclaim, and the Heisui River amount is large, and the biochemical treatment difficulty is high.Therefore develop that high calorie reclaims, the gas slag energy of the descending airflow bed gasification furnace of low compression energy consumption simultaneously retrieving arrangement be present entrained flow gasification technique need to be resolved hurrily a difficult problem it
3. summary of the invention
Purpose of the present invention is exactly the melt cinder solid discharge structure that a kind of descending airflow bed gasification furnace is provided for the deficiency that overcomes existing descending air-flow bed coal-gasification technology existence, the heat of while gas recovery and slag, reduction loop compression energy consumption, avoid the advantages such as Heisui River secondary pollution, can satisfy branch of industry to the requirement of vapourizing furnace.
Technical scheme of the present invention:
The invention provides the melt cinder solid discharge structure of descending airflow bed gasification furnace, formed by descending entrained flow gasification furnace shell, gasification product relief outlet, cooling room, eddy flow cooling jacket, chilling water pipe, atomizer, cooled coal gas return port, gas exit, solid slag-drip opening.Descending airflow bed gasification furnace bottom centre center arranges the gasification product relief outlet, and descending entrained flow gasification furnace bottom links to each other with cooling room; Gasification product relief outlet arranged outside eddy flow cooling jacket, the cooled coal gas return port is connected on eddy flow cooling jacket top; Between gasification product relief outlet and eddy flow cooling jacket, be provided with chilling water pipe and atomizer; Cooling room top arranges gas exit, and cooling room bottom centre arranges the solid slag-drip opening.
The eddy flow cooling jacket is 1.3 ~ 2:1 with the ratio of gasification product outlet diameter, and gasification product relief outlet length is 500 ~ 1000mm, and eddy flow cooling jacket length is 2 ~ 3 times of gasification product relief outlet length.
The cooled coal gas return port is 10-100mm. apart from the cooling room overhead height
The chilling water pipe that arranges between gasification product relief outlet and the eddy flow cooling jacket is 300-800mm. apart from the cooling room overhead height
Atomizer is along the shower nozzle that is evenly arranged on the Quench water pipe circumference, size is identical.
The cooling room aspect ratio is 4 ~ 8:1, and gas exit is 100-1000mm. apart from the cooling room overhead height
4. description of drawings
Fig. 1 is the melt cinder solid discharge structural representation of descending airflow bed gasification furnace of the present invention.
The drawing of accompanying drawing is described as follows: 1. descending entrained flow gasification furnace shell, 2. gasification product relief outlet, 3. cooling room, 4. eddy flow cooling jacket, 5. Quench water pipe, 6. atomizing nozzle, 7. cooled coal gas return port, 8. gas exit, 9. solid slag-drip opening.
5. embodiment
The present invention will be described in detail below in conjunction with accompanying drawing: shown in Figure 1, the melt cinder solid discharge structure of descending airflow bed gasification furnace of the present invention is comprised of descending entrained flow gasification furnace shell (1), gasification product relief outlet (2), cooling room (3), eddy flow cooling jacket (4), Quench water pipe (5), atomizing nozzle (6), cooled coal gas return port (7), gas exit (8), solid slag-drip opening (9); Descending entrained flow gasification furnace shell (1) bottom centre center arranges gasification product relief outlet (2), and descending entrained flow gasification furnace shell (1) bottom links to each other with cooling room (3); Gasification product relief outlet (2) arranged outside eddy flow cooling jacket (4), cooled coal gas return port (7) is connected on eddy flow cooling jacket (4) top; Between gasification product relief outlet (2) and eddy flow cooling jacket (4), be provided with chilling water pipe (5) and atomizer (6); Cooling room (3) top arranges gas exit (8), and cooling room (3) bottom centre arranges solid slag-drip opening (9).
Eddy flow cooling jacket (4) is 1.3 ~ 2:1 with gasification product relief outlet (2) diameter ratio, and gasification product relief outlet (2) length is 500 ~ 1000mm, and eddy flow cooling jacket length (4) is 2 ~ 3 times of gasification product relief outlet (2) length.
Cooled coal gas return port (7) is 10-100mm. apart from cooling room (3) overhead height
The chilling water pipe (5) that arranges between gasification product relief outlet (2) and the eddy flow cooling jacket (4) is 300-800mm. apart from cooling room (3) overhead height
Atomizer (6) is along the shower nozzle that is evenly arranged on Quench water pipe (5) circumference, size is identical.
Cooling room (3) aspect ratio is 4 ~ 8:1, and gas exit (7) is 100-1000mm. apart from cooling room (3) overhead height
During the melt cinder solid discharge arrangement works of descending airflow bed gasification furnace, by eddy flow cooling jacket top high-speed rotary then behind the water smoke humidification that lower cooled coal gas is sprayed by chilling water pipe and atomizer, with the raw gas that enters cooling room and melt cinder eddy flow mixed heat transfer, melt cinder solidifies, in eddy flow cooling jacket lower part outlet gas solid separation; Solid slag is discharged from the solid slag-drip opening of cooling room bottom centre; Raw gas is because the little carbon black that carries of inertia makes progress mobile, from the gas exit on cooling room top flow out the useless pot heat exchange operation that enters the downstream and warm gas liquor wash-out carbon black operation, take full advantage of coal gas and melting slag waste heat, utilize water smoke the gasification latent heat decrease internal circulating load and the circulating consumption of cooled coal gas, a Heisui River difficult problem of having avoided descending airflow bed gasification furnace Quench slag to produce.
Claims (6)
1. the melt cinder solid discharge structure of descending airflow bed gasification furnace, formed by descending entrained flow gasification furnace shell, gasification product relief outlet, cooling room, eddy flow cooling jacket, chilling water pipe, atomizer, cooled coal gas return port, gas exit, solid slag-drip opening, it is characterized in that descending airflow bed gasification furnace bottom centre center arranges the gasification product relief outlet, descending entrained flow gasification furnace bottom links to each other with cooling room; Gasification product relief outlet arranged outside eddy flow cooling jacket, the cooled coal gas return port is connected on eddy flow cooling jacket top; Between gasification product relief outlet and eddy flow cooling jacket, be provided with chilling water pipe and atomizer; Cooling room top arranges gas exit, and cooling room bottom centre arranges the solid slag-drip opening.
2. according to the melt cinder solid discharge structure of the described descending airflow bed gasification furnace of claims (1), it is characterized in that said eddy flow cooling jacket and the ratio of gasification product outlet diameter are 1.3 ~ 2:1, gasification product relief outlet length is 500 ~ 1000mm, and eddy flow cooling jacket length is 2 ~ 3 times of gasification product relief outlet length.
3. according to the melt cinder solid discharge structure of the described descending airflow bed gasification furnace of claims (1), it is characterized in that said cooled coal gas return port is 10-100mm apart from the cooling room overhead height.
4. according to the melt cinder solid discharge structure of the described descending airflow bed gasification furnace of claims (1), it is characterized in that the chilling water pipe that arranges between said gasification product relief outlet and the eddy flow cooling jacket is 300-800mm apart from the cooling room overhead height.
5. according to the melt cinder solid discharge structure of the described descending airflow bed gasification furnace of claims (1), it is characterized in that said atomizer is along the shower nozzle that is evenly arranged on the Quench water pipe circumference, size is identical.
6. according to the melt cinder solid discharge structure of the described descending airflow bed gasification furnace of claims (1), it is characterized in that said cooling room aspect ratio is 4 ~ 8:1, gas exit is 100-1000mm apart from the cooling room overhead height.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104656491A CN102965155A (en) | 2012-11-16 | 2012-11-16 | Liquid slag solid discharging structure of downward entrained-flow bed gasifier |
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| CN2012104656491A CN102965155A (en) | 2012-11-16 | 2012-11-16 | Liquid slag solid discharging structure of downward entrained-flow bed gasifier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104449868A (en) * | 2013-09-24 | 2015-03-25 | 中国石油大学(华东) | Entrained flow gasifier for swirling melt cinder solidification |
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|---|---|---|---|---|
| US4466808A (en) * | 1982-04-12 | 1984-08-21 | Texaco Development Corporation | Method of cooling product gases of incomplete combustion containing ash and char which pass through a viscous, sticky phase |
| DE4025955A1 (en) * | 1989-10-18 | 1991-01-17 | Deutsches Brennstoffinst | Discharge of hot gas and slag from reaction to cooling chamber - in gasifier for partial oxidn. of powder form fuels avoids slagging troubles and need for additional heating |
| CN2923706Y (en) * | 2006-04-26 | 2007-07-18 | 东南大学 | Coal gasifying store chilling-ring rotary water jet reinforced cooling apparatus |
| CN101050387A (en) * | 2007-05-22 | 2007-10-10 | 西安热工研究院有限公司 | Entrained flow gasification installation for compressive dry coal powder and under slag draining in solid state |
| CN101285006A (en) * | 2008-05-30 | 2008-10-15 | 五环科技股份有限公司 | Gasification process of water/gas mixed partial-chilled dry powder fuel and device |
| CN101392191A (en) * | 2008-10-15 | 2009-03-25 | 合肥工业大学 | Two stage type dry coal powder entrained flow gasifier |
| CN201817451U (en) * | 2010-10-19 | 2011-05-04 | 惠生工程（中国）有限公司 | Gasification furnace for producing synthetic gas from liquid fuel or solid fuel or gas fuel |
| CN102140372A (en) * | 2011-02-23 | 2011-08-03 | 惠生工程（中国）有限公司 | High-temperature crude synthesis gas chilling device |
| CN102703129A (en) * | 2012-06-04 | 2012-10-03 | 上海锅炉厂有限公司 | Staged-pressurization gasification reaction device for dry pulverized coal and gasification method thereof |
| CN202912916U (en) * | 2012-11-16 | 2013-05-01 | 中国石油大学(华东) | Melt cinder solid discharge structure for down entrained-flow bed gasifier |
-
2012
- 2012-11-16 CN CN2012104656491A patent/CN102965155A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4466808A (en) * | 1982-04-12 | 1984-08-21 | Texaco Development Corporation | Method of cooling product gases of incomplete combustion containing ash and char which pass through a viscous, sticky phase |
| DE4025955A1 (en) * | 1989-10-18 | 1991-01-17 | Deutsches Brennstoffinst | Discharge of hot gas and slag from reaction to cooling chamber - in gasifier for partial oxidn. of powder form fuels avoids slagging troubles and need for additional heating |
| CN2923706Y (en) * | 2006-04-26 | 2007-07-18 | 东南大学 | Coal gasifying store chilling-ring rotary water jet reinforced cooling apparatus |
| CN101050387A (en) * | 2007-05-22 | 2007-10-10 | 西安热工研究院有限公司 | Entrained flow gasification installation for compressive dry coal powder and under slag draining in solid state |
| CN101285006A (en) * | 2008-05-30 | 2008-10-15 | 五环科技股份有限公司 | Gasification process of water/gas mixed partial-chilled dry powder fuel and device |
| CN101392191A (en) * | 2008-10-15 | 2009-03-25 | 合肥工业大学 | Two stage type dry coal powder entrained flow gasifier |
| CN201817451U (en) * | 2010-10-19 | 2011-05-04 | 惠生工程（中国）有限公司 | Gasification furnace for producing synthetic gas from liquid fuel or solid fuel or gas fuel |
| CN102140372A (en) * | 2011-02-23 | 2011-08-03 | 惠生工程（中国）有限公司 | High-temperature crude synthesis gas chilling device |
| CN102703129A (en) * | 2012-06-04 | 2012-10-03 | 上海锅炉厂有限公司 | Staged-pressurization gasification reaction device for dry pulverized coal and gasification method thereof |
| CN202912916U (en) * | 2012-11-16 | 2013-05-01 | 中国石油大学(华东) | Melt cinder solid discharge structure for down entrained-flow bed gasifier |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104449868A (en) * | 2013-09-24 | 2015-03-25 | 中国石油大学(华东) | Entrained flow gasifier for swirling melt cinder solidification |
| CN104449868B (en) * | 2013-09-24 | 2016-08-31 | 中国石油大学(华东) | A kind of airflow bed gasification furnace of eddy flow melt cinder solidification |
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Application publication date: 20130313 |