CN101870896A - Recovery method of carbon in slag from gasifying furnace - Google Patents
Recovery method of carbon in slag from gasifying furnace Download PDFInfo
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- CN101870896A CN101870896A CN201010162509A CN201010162509A CN101870896A CN 101870896 A CN101870896 A CN 101870896A CN 201010162509 A CN201010162509 A CN 201010162509A CN 201010162509 A CN201010162509 A CN 201010162509A CN 101870896 A CN101870896 A CN 101870896A
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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
- 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]
Abstract
The invention relates to a recovery method of carbon in slag from a gasifying furnace. The invention is characterized in that the recovery method comprises the following steps: the slag discharged from the gasifying furnace is evenly fed into sieving machines with different sieve pore sizes respectively through feed devices according to coarse slag and fine slag to obtain carbon products with medium to high carbon contents and tail slag with low carbon content; the carbon products with the medium carbon content are fed into a liquid-solid fluidized bed sorting machine, especially an impulse liquid-solid fluidized bed sorting machine to obtain materials with fine particle grade components and high carbon content and rail slag with extremely low carbon content; the materials with the fine particle grade components and high carbon content are fed into a sieving machine with the sieve diameter of 0.03-0.15 mm or a sedimentation tank for screening to obtain carbon products with higher carbon content and fine particle grade rail slag with low carbon content or for directly precipitating and dehydrating to obtain carbon products with high carbon content; the fine particle grade materials obtained by utilizing the sieving machine with the sieve diameter of 0.03-0.15 mm for screening are fed into a floatation device for sorting to obtain carbon products with high carbon content and rail slag; and the carbon products and the rail slag which are screened or sorted are dehydrated, and the water after dehydration is recycled in the process of production.
Description
Technical field
The present invention relates to the recovery method of uncompleted burned carbon in a kind of lime-ash, especially relate to the recovery method of carbon in a kind of slag from gasifying furnace.
Background technology
At present, China's raw coal is produced and consumes all very big, is coal production big country, also is the discharging big country of coal slag simultaneously, and throwing aside of cinder not only takies a lot of soils, and serious environment pollution, the waste resource.The cindery composition of coal is very complicated, and cindery comprehensive utilization is a difficult point to coal.Particularly in different coal gasifying process, the lime-ash that vapourizing furnace is discharged always contains some flammable carbon, and this not only causes valuable Energy resources waste, has increased the cost of gasification again.Also slag from gasifying furnace is not carried out sorting at present and reclaim the wherein open or report of application of flammable carbon.
Summary of the invention
The objective of the invention is for overcoming above-mentioned the deficiencies in the prior art part, the recovery method of carbon in a kind of slag from gasifying furnace is provided, this method comprises the lime-ash that vapourizing furnace is discharged, feed the different sieve apparatus of size of mesh equably by feeding device by thick slag respectively with thin slag, obtain in the carbon content to high carbon products and the low tailings of carbon content through screening, the medium carbon products of carbon content is fed the liquid-solid fluid bed separation machine liquid-solid fluid bed separation machine of particularly pulsing carry out sorting, obtain containing the high material and the very low tailings of carbon content of carbon content of fine fraction composition, the high material of carbon content that will contain the fine fraction composition feeds 0.03-0.15mm sieve apparatus or settling tank, obtain higher carbon products of carbon content and the very low fine fraction tailings of carbon content through screening, also very high as if fine-graded carbon content in the high carbon products of carbon content, just directly dehydration obtains the high carbon products of carbon content through precipitation, the fine particle stage material that screening obtains through 0.03-0.15mm feeds floatation equipment and carries out sorting, obtain high carbon products of carbon content and tailings, to put forward the high-carbon rate of recovery as far as possible.
The present invention realizes that with following technical scheme concrete steps are as follows:
A, with the lime-ash that vapourizing furnace is discharged, feed the different sieve apparatus of size of mesh equably by feeding device respectively by thick slag and thin slag, obtain arriving in the carbon content high carbon products and the low tailings of carbon content through screening.
B, the medium carbon products of carbon content that step a is obtained feed the liquid-solid fluid bed separation machine liquid-solid fluid bed separation machine of particularly pulsing and carry out sorting, obtain containing the high material and the very low tailings of carbon content of carbon content of fine fraction composition.
C, the high material of the carbon content that contains the fine fraction composition that step b is obtained feed 0.03-0.15mm sieve apparatus or settling tank, obtain higher carbon products of carbon content and the very low fine fraction tailings of carbon content through screening, also very high as if fine-graded carbon content in the high carbon products of carbon content, just directly dewatering through precipitation obtains the high carbon products of carbon content.
D, the fine particle stage material that step a neutralization procedure c is obtained through 0.03-0.15mm screening feed floatation equipment and carry out sorting, obtain high carbon products of carbon content and tailings, to put forward the high-carbon rate of recovery as far as possible.
E, carbon products behind wet sieving or liquid-solid fluid bed separation and tailings in step a, step b, step c and the steps d are dewatered, obtain low carbon products of water content and tailings, the recycle aborning of the water after the dehydration.
The lime-ash that described vapourizing furnace is discharged is wet lime-ash, feeds the different sieve apparatus of size of mesh through the feeding device or the back of sizing mixing by pump or slip divider by thick slag respectively with thin slag.
The lime-ash that described vapourizing furnace is discharged is the dry ash slag, feeds the different sieve apparatus of size of mesh equably by feeding device by thick slag respectively with thin slag.
Described through the medium carbon products of carbon content that obtains of screening, feed the liquid-solid fluid bed separation machine liquid-solid fluid bed separation machine of particularly pulsing by feeding device or pump and carry out sorting.
Advantage of the present invention is: this method technology is simple, cost is low, be not only applicable to the recovery of carbon in the slag from gasifying furnace, also be applicable to the recovery of carbon in the lime-ash that other coal firing boilers produce, when reclaiming a large amount of valuable resources, solved the residue contamination problem again.
Embodiment
Below in conjunction with embodiment the present invention is described in further detail:
Embodiment 1,
The ash content that vapourizing furnace is discharged is 55% wet lime-ash, feed the sieve apparatus that partition size is 0.045mm with the slag stock pump, through wet sieving, obtain the low fine fraction tailings (ash content is 70%) of high coarse fraction carbon products of carbon content (ash content is 25%) and carbon content, carbon products and tailings obtain low carbon products of water content and tailings through the precipitation dehydration.
Embodiment 2,
The ash content that vapourizing furnace is discharged is 55% wet lime-ash, feed the sieve apparatus that partition size is 0.045mm with the slag stock pump, through wet sieving, obtain the low fine particle stage material (ash content is 70%) of high coarse fraction carbon products of carbon content (ash content is 25%) and carbon content, the fine particle stage material that carbon content is low feeds the flotation column sorting, obtain the high carbon products of carbon content (ash content is 36%), the tailings low (ash content is 88%) with carbon content, carbon products and tailings obtain low carbon products of water content and tailings through the precipitation dehydration.
Embodiment 3
The ash content that vapourizing furnace is discharged is 86% wet lime-ash, feed the sieve apparatus that partition size is 1mm with the slag stock pump, through wet sieving, obtain the low material (ash content is 98%) of medium material of carbon content (ash content is 61%) and carbon content, the medium material of carbon content feeds pulsation liquid-solid fluid bed separation machine and carries out sorting, obtain containing high carbon products (ash content is 33%) and low (ash content is 92%) tailings of carbon content of carbon content of fine fraction product, fine-graded carbon content is also very high in the high carbon products of carbon content, therefore it is directly fed settling tank precipitates dehydration, tailings also precipitates dehydration, obtains low carbon products of water content and tailings.
Embodiment 4
The ash content that vapourizing furnace is discharged is 65% wet lime-ash, feed the sieve apparatus that partition size is 2mm with the slag stock pump, through wet sieving, obtain the low material (ash content is 99%) of medium material of carbon content (ash content is 57%) and carbon content, the medium material of carbon content feeds pulsation liquid-solid fluid bed separation machine and carries out sorting, obtain containing high carbon products (ash content is 33%) and low (ash content is 94%) tailings of carbon content of carbon content of fine fraction product, to further feed the sieve apparatus that partition size is 0.063mm through the high carbon products (ash content is 33%) of the carbon content that contains the fine fraction product that the pulsation liquid-solid fluid bed separation obtains, through wet sieving, obtain the very low fine fraction tailings (ash content is 70%) of higher carbon products of carbon content (ash content is 27%) and carbon content.Carbon products and tailings obtain low carbon products of water content and tailings through the precipitation dehydration.
Embodiment 5
The ash content that vapourizing furnace is discharged is 65% wet lime-ash, feed the sieve apparatus that partition size is 2mm with the slag stock pump, through wet sieving, obtain the low material (ash content is 99%) of medium material of carbon content (ash content is 57%) and carbon content, the medium material of carbon content feeds pulsation liquid-solid fluid bed separation machine and carries out sorting, obtain containing high carbon products (ash content is 33%) and low (ash content is 94%) tailings of carbon content of carbon content of fine fraction product, to further feed the sieve apparatus that partition size is 0.063mm through the high carbon products (ash content is 33%) of the carbon content that contains the fine fraction product that the pulsation liquid-solid fluid bed separation obtains, through wet sieving, obtain very low fine fraction tailings (ash content the is 70%) two portions of higher carbon products of carbon content (ash content is 27%) and carbon content, the fine fraction lime-ash that carbon content is very low (ash content is 70%) further feeds the flotation column sorting, obtain the high carbon products of carbon containing (ash content is 38%), the tailings low (ash content is 86%) with carbon content, carbon products and tailings obtain low carbon products of water content and tailings through the precipitation dehydration.
Claims (4)
1. the recovery method of carbon in the slag from gasifying furnace, it is characterized in that: concrete steps are as follows:
A, with the lime-ash that vapourizing furnace is discharged, feed sieve apparatus by the feeding device or the back of sizing mixing by pump or slip divider, obtain in the carbon content to high carbon products and the low tailings of carbon content through screening.
B, the medium carbon products of carbon content that step a is obtained feed the liquid-solid fluid bed separation machine liquid-solid fluid bed separation machine of particularly pulsing and carry out sorting, obtain containing the high material and the very low tailings of carbon content of carbon content of fine fraction composition.
C, the high material of the carbon content that contains the fine fraction composition that step b is obtained feed 0.03-0.15mm sieve apparatus or settling tank, and the process screening obtains the higher carbon products of carbon content and very low fine fraction tailings or direct the dehydration through precipitation of carbon content obtains the high carbon products of carbon content.
D, the fine particle stage material that step a neutralization procedure c is obtained through 0.03-0.15mm screening feed floatation equipment and carry out sorting, obtain high carbon products of carbon content and tailings.
E, carbon products behind wet sieving or liquid-solid fluid bed separation and tailings in step a, step b, step c and the steps d are dewatered, obtain low carbon products of water content and tailings, the recycle aborning of the water after the dehydration.
2. the recovery method of carbon in a kind of slag from gasifying furnace according to claim 1, it is characterized in that: the lime-ash that described vapourizing furnace is discharged is wet lime-ash, feeds the different sieve apparatus of size of mesh through the feeding device or the back of sizing mixing by pump or slip divider by thick slag respectively with thin slag.
3. the recovery method of carbon in a kind of slag from gasifying furnace according to claim 1 is characterized in that: the lime-ash that described vapourizing furnace is discharged is the dry ash slag, feeds the different sieve apparatus of size of mesh equably by feeding device by thick slag respectively with thin slag.
4. the recovery method of carbon in a kind of slag from gasifying furnace according to claim 1, it is characterized in that: described through the medium carbon products of carbon content that obtains of screening, feed the liquid-solid fluid bed separation machine liquid-solid fluid bed separation machine of particularly pulsing by feeding device or pump and carry out sorting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010162509.8A CN101870896B (en) | 2009-08-11 | 2010-04-12 | Recovery method of carbon in slag from gasifying furnace |
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| CN 200910183787 CN101638591A (en) | 2009-08-11 | 2009-08-11 | Recovery method of carbon in slag from gasifying furnace |
| CN200910183787.9 | 2009-08-11 | ||
| CN2009101837879 | 2009-08-11 | ||
| CN201010162509.8A CN101870896B (en) | 2009-08-11 | 2010-04-12 | Recovery method of carbon in slag from gasifying furnace |
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| CN101870896A true CN101870896A (en) | 2010-10-27 |
| CN101870896B CN101870896B (en) | 2015-04-01 |
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| CN201010162509.8A Expired - Fee Related CN101870896B (en) | 2009-08-11 | 2010-04-12 | Recovery method of carbon in slag from gasifying furnace |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102533300A (en) * | 2011-12-31 | 2012-07-04 | 山西沁新能源集团股份有限公司 | Clean-type coke byproduct high-ash coke powder industrial purifying device for heat recovery coke furnace |
| CN105964409A (en) * | 2016-05-19 | 2016-09-28 | 康洪强 | Method for treating fine slag of coal gasification device |
| CN107641537A (en) * | 2017-09-28 | 2018-01-30 | 陕西融泰能源控股有限公司 | A kind of slag of coal gasification purifying process and the system for realizing its technique |
| CN107952588A (en) * | 2016-10-14 | 2018-04-24 | 中国石油化工股份有限公司 | The technique that carbon is recycled in coal gasification lime-ash |
| CN110976075A (en) * | 2019-12-20 | 2020-04-10 | 郑州大学 | Method for extracting carbon and reducing ash by coarse grain tailing discarding and fine grain flotation of gasified slag |
| CN111644263A (en) * | 2020-06-16 | 2020-09-11 | 太原理工大学 | Combined separation process and device for realizing carbon-ash separation of gasified slag |
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| CN109777546A (en) * | 2019-02-26 | 2019-05-21 | 通用电气神华气化技术有限公司 | Gasify ash comprehensive utilization system and method |
| CN111922026A (en) * | 2019-05-13 | 2020-11-13 | 天津城建大学 | Incineration fly ash triboelectric separation treatment equipment and method |
| CN110586622B (en) * | 2019-09-24 | 2022-10-28 | 新疆天业（集团）有限公司 | Method for comprehensively utilizing gasifier slag resources |
| CN110548749A (en) * | 2019-09-25 | 2019-12-10 | 中国矿业大学(北京) | Novel method for grading and quality-grading utilization of coal gasification ash |
| CN110624506B (en) * | 2019-10-24 | 2022-04-08 | 陕西利人之星环保科技有限公司 | Method for preparing water purifying agent by utilizing coal gasification furnace slag and obtained water purifying agent |
| CN111644264B (en) * | 2020-06-16 | 2022-04-08 | 太原理工大学 | Gasification slag gravity-magnetic combined separation process |
| CN111659527B (en) * | 2020-06-16 | 2022-04-08 | 太原理工大学 | Gasification slag water medium cyclone gravity carbon ash separation device and method |
| CN111961492A (en) * | 2020-08-15 | 2020-11-20 | 新疆新业能源化工有限责任公司 | Tar residue resource utilization process |
| CN114798149B (en) * | 2022-05-06 | 2023-07-21 | 太原理工大学 | Method for separating residual carbon from carbon-containing coal ash slag and airflow separation system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102533300A (en) * | 2011-12-31 | 2012-07-04 | 山西沁新能源集团股份有限公司 | Clean-type coke byproduct high-ash coke powder industrial purifying device for heat recovery coke furnace |
| CN105964409A (en) * | 2016-05-19 | 2016-09-28 | 康洪强 | Method for treating fine slag of coal gasification device |
| CN107952588A (en) * | 2016-10-14 | 2018-04-24 | 中国石油化工股份有限公司 | The technique that carbon is recycled in coal gasification lime-ash |
| CN107641537A (en) * | 2017-09-28 | 2018-01-30 | 陕西融泰能源控股有限公司 | A kind of slag of coal gasification purifying process and the system for realizing its technique |
| CN110976075A (en) * | 2019-12-20 | 2020-04-10 | 郑州大学 | Method for extracting carbon and reducing ash by coarse grain tailing discarding and fine grain flotation of gasified slag |
| CN110976075B (en) * | 2019-12-20 | 2021-11-26 | 郑州大学 | Method for extracting carbon and reducing ash by coarse grain tailing discarding and fine grain flotation of gasified slag |
| CN111644263A (en) * | 2020-06-16 | 2020-09-11 | 太原理工大学 | Combined separation process and device for realizing carbon-ash separation of gasified slag |
| CN111644263B (en) * | 2020-06-16 | 2022-04-12 | 太原理工大学 | Combined separation process and device for realizing carbon-ash separation of gasified slag |
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| Publication number | Publication date |
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| CN101638591A (en) | 2010-02-03 |
| CN101870896B (en) | 2015-04-01 |
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