CN105694989A - High-temperature coal gas purification technique - Google Patents
High-temperature coal gas purification technique Download PDFInfo
- Publication number
- CN105694989A CN105694989A CN201610075062.8A CN201610075062A CN105694989A CN 105694989 A CN105694989 A CN 105694989A CN 201610075062 A CN201610075062 A CN 201610075062A CN 105694989 A CN105694989 A CN 105694989A
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- China
- Prior art keywords
- coal gas
- coal
- high temperature
- gasification furnace
- gas
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/20—Purifying combustible gases containing carbon monoxide by treating with solids; Regenerating spent purifying masses
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/82—Gas withdrawal means
- C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/002—Removal of contaminants
- C10K1/003—Removal of contaminants of acid contaminants, e.g. acid gas removal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/002—Removal of contaminants
- C10K1/003—Removal of contaminants of acid contaminants, e.g. acid gas removal
- C10K1/004—Sulfur containing contaminants, e.g. hydrogen sulfide
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/02—Dust removal
- C10K1/024—Dust removal by filtration
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
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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
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a high-temperature coal gas purification technique which comprises the following steps: (1) coal is added into a gasification furnace, and converted into high-temperature coal gas; (2) the gasification furnace is abutted against a reflux moving bed device so that the high-temperature coal gas in the gasification furnace enters the reflux moving bed device via a lower inlet; and after impurity-containing hot coal gas contacts a solid purifying agent, the impurities are absorbed by the solid purifying agent, the coal gas is filtered by a ceramic high-temperature filter unit on the upper part and discharged from a top outlet, the gas impurities in the coal gas are removed at one time, and meanwhile, dust in the coal gas is removed by the ceramic high-temperature filter unit. The technique is simple, can greatly lower the maintenance cost of the integrated system, simplifies the coproduction system, and enhances the system efficiency. After using the technique, the used gas purifying agent is a catalyst byproduct and can be used as a catalyst for direct coal liquefaction or other industrial processes, and can enhance the economic benefits of the coproduction system.
Description
Technical field
The present invention relates to a kind of gas purification technical matters, particularly relate to a kind of high temperature coal gas purification technical matters。
Background technology
China is the country with coal for main primary energy; coal occupies more than the 65% of primary energy; current coal in China yield and the total quantity consumed Jun Lie world are the first; and coal production is still rising; nearly 25 hundreds of millions tons within 2009, are reached; China's major part electric power relies on coal-burning power plant to produce; the annual discharge producing substantial amounts of atmosphere pollution due to fire coal; the discharge making China's sulfur dioxide and nitrogen oxides is first place, the world; therefore; China faces the dual-pressure of the energy safety of supply and environmental conservation, and the development of clean coal technology is very urgent。The desulfurizing and purifying of process matching is one of major technique of Poly-generation technology research and development, key link therein is that the combustion gas as fuel synthesizes, for the coal gas high-temperature purification of coal gas steam combined cycle power generating and the alcohol-ether fuel as raw material, the middle high temperature purification made leave with rage, mainly include sulfur, the presoma of denitrifying oxide and tar, the elimination of particulate matter etc., generally, with coal gas, gas turbine requires that hydrogen sulfide content is lower than 20-100ppmv, the hydrogen sulfide content of synthesis unstripped gas requires lower than 0.5-10ppmv, the method of domestic and international gas sweetening is a lot, but all there is complicated operation, Selective adsorption difference is relatively low with desulfurization precision or high in cost of production is not enough, especially, middle high temperature desulfuration agent ubiquity cyclical stability is poor, regeneration difficulty, the problems such as atmosphere effect is serious。Simultaneously, the elimination of current gas with various impurity utilizes different clean unit to carry out respectively, denitrogenation and elimination tar are undertaken by catalyst unit, particulate matter needs high temperature filtration unit to carry out, each unit accumulates the bulky of the system of composition, maintenance cost is high, increases the complexity of system operation, improves the cost of system。
Summary of the invention
The present invention is aiming at the deficiency of above-mentioned technology, it is proposed to a kind of high temperature coal gas purification technical matters, and this technological operation is simple, and maintenance cost is low, desulfurizing agent good stability, purifies purity high。
For reaching above-mentioned technical purpose, present invention employs a kind of high temperature coal gas purification technical matters, idiographic flow is:
(1) coal is put into gasification furnace to heat to 800-1200 DEG C, thus Coal Gasification is converted into coal gas of high temperature；
(2) gasification furnace and counter-flow moving bed device are docked, coal gas of high temperature in gasification furnace is entered by the lower entrances of counter-flow moving bed device, after heating gas containing impurity contacts with solid purificant, impurity is absorbed by solid purificant, the coal gas ceramic high temperature filter element through top is discharged from top exit after filtering, disposable by the gaseous impurity elimination in coal gas, dust in coal gas is removed by middle ceramic high temperature filter element simultaneously, purification temperature is 500-800 DEG C, and air pressure is 120-140pa。
In the present invention, it is preferred to solid purificant be with metals such as ferrum, zinc, copper, molybdenum, silver, nickel for active component, using A-X combined zeolite as the solid purificant of carrier。
In the present invention, the described filtering material in ceramic high temperature unit is nonmetal oxidation material, such as sulfur dioxide, phosphorus pentoxide。
In the present invention, described coal is brown coal or long bituminous coal。
Technology and technique used by the present invention are simple, the maintenance cost that can make total system is substantially reduced, simplify polygenerations systeme, improve the efficiency of system simultaneously, and after using the technique of the present invention, gas purifying agent after using is the side-product of catalyst, it is possible to for the catalyst of direct coal liquefaction or other industrial process, can improve the economic benefit of polygenerations systeme。
Detailed description of the invention
The present invention is described in more detail by embodiment in detail below。
Embodiment 1
A kind of high temperature coal gas purification technical matters, idiographic flow is:
(1) brown coal are put into gasification furnace to heat to 800-1200 DEG C, thus Coal Gasification is converted into coal gas of high temperature；
(2) gasification furnace and counter-flow moving bed device are docked, coal gas of high temperature in gasification furnace is entered by the lower entrances of counter-flow moving bed device, after heating gas containing impurity contacts with solid purificant, impurity is absorbed by solid purificant, the coal gas ceramic high temperature filter element through top is discharged from top exit after filtering, disposable by the gaseous impurity elimination in coal gas, dust in coal gas is removed by middle ceramic high temperature filter element simultaneously, purification temperature is 500-800 DEG C, and air pressure is 120-140pa。
In the present embodiment, it is preferred that solid purificant be with metals such as ferrum, zinc, copper, molybdenum, silver, nickel for active component, using A-X combined zeolite as the solid purificant of carrier。
In the present embodiment, the described filtering material in ceramic high temperature unit is nonmetal oxidation material, such as sulfur dioxide, phosphorus pentoxide。
Embodiment 2
A kind of high temperature coal gas purification technical matters, idiographic flow is:
(1) long bituminous coal is put into gasification furnace to heat to 800-1200 DEG C, thus Coal Gasification is converted into coal gas of high temperature；
(2) gasification furnace and counter-flow moving bed device are docked, coal gas of high temperature in gasification furnace is entered by the lower entrances of counter-flow moving bed device, after heating gas containing impurity contacts with solid purificant, impurity is absorbed by solid purificant, the coal gas ceramic high temperature filter element through top is discharged from top exit after filtering, disposable by the gaseous impurity elimination in coal gas, dust in coal gas is removed by middle ceramic high temperature filter element simultaneously, purification temperature is 500-800 DEG C, and air pressure is 120-140pa。
In the present embodiment, it is preferred that solid purificant be with metals such as ferrum, zinc, copper, molybdenum, silver, nickel for active component, using A-X combined zeolite as the solid purificant of carrier。
In the present embodiment, the described filtering material in ceramic high temperature unit is nonmetal oxidation material, such as sulfur dioxide, phosphorus pentoxide。
Claims (4)
1. a high temperature coal gas purification technical matters, it is characterised in that idiographic flow is:
(1) coal is put into gasification furnace to heat to 800-1200 DEG C, thus Coal Gasification is converted into coal gas of high temperature；
(2) gasification furnace and counter-flow moving bed device are docked, coal gas of high temperature in gasification furnace is entered by the lower entrances of counter-flow moving bed device, after heating gas containing impurity contacts with solid purificant, impurity is absorbed by solid purificant, the coal gas ceramic high temperature filter element through top is discharged from top exit after filtering, disposable by the gaseous impurity elimination in coal gas, dust in coal gas is removed by middle ceramic high temperature filter element simultaneously, purification temperature is 500-800 DEG C, and air pressure is 120-140pa。
2. a kind of high temperature coal gas purification technical matters as claimed in claim 1, it is characterised in that described solid purificant is with metals such as ferrum, zinc, copper, molybdenum, silver, nickel for active component, using A-X combined zeolite as the solid purificant of carrier。
3. a kind of high temperature coal gas purification technical matters as claimed in claim 1, it is characterised in that the described filtering material in ceramic high temperature unit is nonmetal oxidation material, such as sulfur dioxide, phosphorus pentoxide。
4. a kind of high temperature coal gas purification technical matters as claimed in claim 1, it is characterised in that described coal is brown coal or long bituminous coal。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610075062.8A CN105694989A (en) | 2016-02-03 | 2016-02-03 | High-temperature coal gas purification technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610075062.8A CN105694989A (en) | 2016-02-03 | 2016-02-03 | High-temperature coal gas purification technique |
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| Publication Number | Publication Date |
|---|---|
| CN105694989A true CN105694989A (en) | 2016-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610075062.8A Pending CN105694989A (en) | 2016-02-03 | 2016-02-03 | High-temperature coal gas purification technique |
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| CN (1) | CN105694989A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5154900A (en) * | 1988-02-10 | 1992-10-13 | Mitsubishi Jukogyo Kabushiki Kaisha | Method for purifying high-temperature reducing gas |
| CN101880553A (en) * | 2010-06-22 | 2010-11-10 | 沈阳航空航天大学 | An integrated medium-high temperature gas purification method and equipment suitable for coal-based gas |
| CN103551105A (en) * | 2013-10-31 | 2014-02-05 | 西南化工研究设计院有限公司 | Calcium carbide furnace exhaust purifying agent, and preparation method and application thereof |
| CN104785016A (en) * | 2015-04-10 | 2015-07-22 | 陕西煤业化工集团神木天元化工有限公司 | Dedusting agent as well as process and device for coal pyrolysis gas dedusting with dedusting agent |
-
2016
- 2016-02-03 CN CN201610075062.8A patent/CN105694989A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5154900A (en) * | 1988-02-10 | 1992-10-13 | Mitsubishi Jukogyo Kabushiki Kaisha | Method for purifying high-temperature reducing gas |
| CN101880553A (en) * | 2010-06-22 | 2010-11-10 | 沈阳航空航天大学 | An integrated medium-high temperature gas purification method and equipment suitable for coal-based gas |
| CN103551105A (en) * | 2013-10-31 | 2014-02-05 | 西南化工研究设计院有限公司 | Calcium carbide furnace exhaust purifying agent, and preparation method and application thereof |
| CN104785016A (en) * | 2015-04-10 | 2015-07-22 | 陕西煤业化工集团神木天元化工有限公司 | Dedusting agent as well as process and device for coal pyrolysis gas dedusting with dedusting agent |
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Application publication date: 20160622 |
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