CN102925166A - Tar recovery system for coaly activated carbons of vertical internal heating retort furnace - Google Patents
Tar recovery system for coaly activated carbons of vertical internal heating retort furnace Download PDFInfo
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- CN102925166A CN102925166A CN201210470270XA CN201210470270A CN102925166A CN 102925166 A CN102925166 A CN 102925166A CN 201210470270X A CN201210470270X A CN 201210470270XA CN 201210470270 A CN201210470270 A CN 201210470270A CN 102925166 A CN102925166 A CN 102925166A
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Abstract
The invention relates to a tar recovery system for coaly activated carbons of a vertical internal heating retort furnace, comprising a venturi scrubber, a cyclone oil trap, an ammonia water-tar mixing tank and a tar tank, wherein the venturi scrubber is communicated with the retort furnace; the venturi scrubber and the cyclone oil trap are respectively communicated with the ammonia water-tar mixing tank; and the ammonia water-tar mixing tank is communicated with the tar tank. The tar recovery system disclosed by the invention can effectively recover the tar in the tail gas after the raw coals are carbonized, so that the tail gas is largely purified, and the excellent economic benefit can be generated; by taking a furnace profile of monomer 50,000 tons for example, 200 tons raw coals are used per day and 2 tons tar can be recovered, so that a profit of 8,000 yuan can be gained per day according to the present coal tar price of 4,000 yuan RMB per ton.
Description
Technical field
The present invention relates to the comprehensive utilization technique of tail gas of carbonization stove, specifically a kind of charring furnace coal mass active carbon tail gas tar, coal-gas recovering facility.
Background technology
Gac is a kind of widely used sorbing material, and is increasing at the consumption of environmental protection, food, light industry, medicine and other fields since 20 beginnings of the century were thrown people's industry production, also is being widely used aspect catalyzer and the carrier thereof.
The common equipment of producing gac is lump coal stove or granule coal stove.Granule coal upright furnace: the vertical height of body of heater is 7m, and gas skirt to carbonizing chamber height is 4m in the stove; Be provided with 6 carbonizing chambers, 4 opening for feeds; Gas skirt plays a part negative pressure cavity, every long 3m of negative pressure cavity, and wide 45cm, high 40cm, whole gas skirt all imbed in lump coal or the little beans.In the production process of activated carbon of granule coal upright furnace, the tail gas (being called coal gas of high temperature or raw gas) that charring furnace produces is directly burnt rear Sui exhaust emissions usually in atmosphere.Contain the compositions such as a large amount of tar and hydrogen, nitrogen in this tail gas, exhaust gas component is as follows:
Owing to extracting the huge investments of needs such as gas composition is coal-tar middle oil, hydrogen, nitrogen, and producing little effect, reclaim " losing more than gain ", so the traditional method of processing so far coal gas of high temperature still is to have burned it, both wasted resource, polluted again environment.
Summary of the invention
The object of the invention is to, solve the tail gas coal-tar middle oil byproduct of conventional art after to former coal carbonization, the difficult recovery and the high difficult problem of cost provides a kind of device and processing method of new-type extraction tar.
The present invention is achieved in that
Extract the recovery system of tar in the tail gas after the present invention's the former coal carbonization, mainly contain Wen's tower, whirlwind trap for oil, ammonia water and tar oil mixing tank, tar tank composition.Wen's tower is communicated with charring furnace by convergence tube; Wen's tower, whirlwind trap for oil are communicated with the ammonia water and tar oil mixing tank respectively; The ammonia water and tar oil mixing tank is communicated with tar tank.
Lower in described Wen's tower, be provided with temperature drop pipe and powder travel fatigue pipe;
Described whirlwind trap for oil, in the multi-layer rotational flow column plate is arranged, ammonia water spraying device is established at the top.
The present invention extracts the beneficiating ingredients such as tar from raw gas production technique is:
One. the purifying technique of coal gas
Raw coal is at the upright carbonization furnace high temperature carbonization, 120～200 ℃ of raw gass of generation, and after convergence tube entered Wen's tower, ammoniacal liquor sprayed raw gas along a plurality of spray lines of Wen's tower inner top, and raw gas is cooled to 70～90 ℃;
Coal gas after the washing of Wen's tower enters whirlwind trap for oil bottom by Wen's tower middle part through booster fan, rises thereupon;
Ammoniacal liquor cools off, purifies the coal gas that rises by the flusher at whirlwind trap for oil top; Multi-layer rotational flow column plate in the whirlwind trap for oil carries out stage treatment to the dust in the coal gas;
The coal gas of processing through the whirlwind trap for oil, by the top of whirlwind trap for oil out after, external application.
Two. the production technique that light oil, tar, ammonia extraction reclaim
The raw gas that produces behind the charring furnace high temperature carbonization enters Wen's tower by convergence tube;
After raw gas washed through Wen's tower spray water, the ammonia water and tar oil mixed solution entered in the ammonia water and tar oil tank from Wen's tower bottom;
The ammonia water and tar oil mixed solution adopts the cooling of nature, the method that leaves standstill, separates to carry out stage treatment in the ammonia water and tar oil tank, namely forms three layers: the top layer is light oil-catch into light oil pool; The middle level is that heavy oil-with the tar pump is extracted in the tar storage tank and stores; Be ammoniacal liquor and burnt mud mixture at the bottom of the tank: ammoniacal liquor---with ammoniacal liquor pumping Wen tower, be used for the cooling raw gas; Burnt mud mixture adopts the bottom to be provided with the tar ammonia separator tank of deslagging scraper plate, and the dregs of fat that are deposited on the separator tank bottom are scraped.
The invention has the beneficial effects as follows:
The present invention can effectively reclaim-turn waste into wealth the tar in the tail gas after the former coal carbonization, not only greatly pure tail gas, can also produce good economic benefit: the type of furnace according to 50,000 tons of monomers is example, use 200 tons in raw coal its every day, 2 tons in recyclable tar (and 2 tons of tar of traditional technology are directly burnt), according to present 4000 yuan of name coin of the every doze of coal tar price meter, can make a profit every day 8000 yuan.
Below in conjunction with drawings and Examples, the present invention will be further described.
Description of drawings:
The structural representation of the coke tar recovery system of the embodiment of the invention.
Embodiment:
Accompanying drawing shows the overall structure of the coke tar recovery system of the embodiment of the invention
The coke tar recovery system of the present embodiment mainly contains Wen's tower, whirlwind trap for oil, ammonia water and tar oil mixing tank, tar tank composition.Wen's tower is communicated with charring furnace by convergence tube; Wen's tower, whirlwind trap for oil are communicated with the ammonia water and tar oil mixing tank respectively; The ammonia water and tar oil mixing tank is communicated with tar tank;
Described convergence tube is that the flue gas that will contain tar from the charring furnace top converges, the coal gas of high temperature after the centralized collection charing (120～200 ° of C claim again raw gas);
Described Wen's tower, its effect are by to ammonia spray, the temperature of coal gas of high temperature lowered, and the treating part dust.Be comprised of temperature drop pipe and powder travel fatigue pipe two portions in this Wen's tower, temperature drop pipe is responsible for cooling, and powder travel fatigue pipe is responsible for dedusting;
Described whirlwind trap for oil, in be provided with the multi-layer rotational flow column plate, cold ring ammonia water spraying device is established at the top.
The concrete technology of the present embodiment extraction coal gas, tar, ammoniacal liquor is as follows:
One. the purification of coal gas
The raw gas that charring furnace produces, temperature is 120 ℃ of-200 ° of C approximately, enter Wen's tower through convergence tube;
Be provided with a plurality of ammoniacal liquor spray lines in Wen's tower, (this ammoniacal liquor can adopt the ammoniacal liquor of second stage employ by its spray ammoniacal liquor, namely in the ammonia water and tar oil mixing tank through the remained ammonia after the clarification, Wen's tower is delivered in pressurization through aqua ammonia pump) with the raw gas cooling, be cooled to: 70～90 ℃.
Coal gas after the washing of Wen's tower is directly delivered to the whirlwind trap for oil through booster fan, and the coal gas that rises is cooled off, purifies.At last, coal gas by the top of whirlwind trap for oil out after, directly export external application.
Tar, phlegma that ammoniacal liquor after the washing of Wen's tower place and condensation are got off flow in the ammonia water and tar oil mixing tank by the pipeline that is located at Wen's tower bottom, carry out clarified separation.
Two. the production technique that the extraction of tar, ammoniacal liquor is reclaimed
The ammonia water and tar oil mixed solution that gets off from Wen's tower bottom enters in the ammonia water and tar oil tank, through water cooling, leave standstill, separate after, the ammonia water and tar oil mixed solution is divided into three layers: top layer light oil is caught into light oil pool, and the heavy tar at the bottom of the sedimentation basin is extracted in the tar pool inner storage tank with the tar pump and stores; Raw gas is sprayed, cooled off in the middle level through separation, cooled ammoniacal liquor again with ammoniacal liquor pumping Wen tower.
The ammonia water and tar oil mixed solution of Wen's tower, whirlwind trap for oil bottom is from flowing in the tar ammonia tank, and ammoniacal liquor, tar are after cooling off, leave standstill, separating, and mixed solution divides three layers, and the top layer tar light oil is done fuel and used; The middle level is heavy oil, and bottom is ammoniacal liquor and burnt mud mixture.
The separation of the dregs of fat and processing
For the processing of sneaking into the coal dust ash in the coal tar, in the cyclic ammonia water pond, be deposited on generally speaking the bottom, pond, can be interrupted cleaning.Large for dust content, tar ammonia separates and deslagging can adopt mechanize tar ammonia separator tank, and this device bottom is provided with the deslagging scraper plate, can automatically the dregs of fat that are deposited on the separator tank bottom be scraped.
Claims (2)
1. hot charring furnace coal mass active carbon coke tar recovery system in the vertical type is characterized in that: be comprised of Wen's tower, whirlwind trap for oil, ammonia water and tar oil mixing tank and tar tank; Wen's tower is communicated with charring furnace by convergence tube; Wen's tower, whirlwind trap for oil are communicated with the ammonia water and tar oil mixing tank respectively; The ammonia water and tar oil mixing tank is communicated with tar tank;
Lower in described Wen's tower, be provided with temperature drop pipe and powder travel fatigue pipe;
Described whirlwind trap for oil, in the multi-layer rotational flow column plate is arranged, ammonia water spraying device is established at the top.
2. the interior hot charring furnace coal mass active carbon coke tar recovery system of vertical type extracts the production technique of beneficiating ingredient, it is characterized in that:
One. the purifying technique of coal gas
Raw coal is at the upright carbonization furnace high temperature carbonization, 120～200 ℃ of raw gass of generation, and after convergence tube enters Wen's tower,, ammoniacal liquor sprays raw gas along a plurality of spray lines of Wen's tower inner top, and raw gas is cooled to 70～90 ℃;
Coal gas after the washing of Wen's tower enters whirlwind trap for oil bottom by Wen's tower middle part through booster fan, rises thereupon;
Ammoniacal liquor cools off, purifies the coal gas that rises by the flusher at whirlwind trap for oil top; Multi-layer rotational flow column plate in the whirlwind trap for oil carries out stage treatment to the dust in the coal gas;
The coal gas of processing through the whirlwind trap for oil, by the top of whirlwind trap for oil out after, external application.
Two. the production technique that light oil, tar, ammonia extraction reclaim
The raw gas that the charring furnace high temperature carbonization produces enters Wen's tower by convergence tube;
After raw gas washed through Wen's tower spray water, the ammonia water and tar oil mixed solution entered in the ammonia water and tar oil tank from Wen's tower bottom;
The ammonia water and tar oil mixed solution in the ammonia water and tar oil tank by naturally cooling, the method that leaves standstill, separate carries out stage treatment, forms three layers: top layer light oil-catch into light oil pool; The middle level is that heavy oil-with the tar pump is extracted in the tar storage tank and stores; Be ammoniacal liquor and burnt mud mixture at the bottom of the tank: ammoniacal liquor---with ammoniacal liquor pumping Wen tower, be used for the cooling raw gas; Burnt mud mixture adopts the bottom to be provided with the tar ammonia separator tank of deslagging scraper plate, and the dregs of fat that are deposited on the separator tank bottom are scraped.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210470270XA CN102925166A (en) | 2012-11-19 | 2012-11-19 | Tar recovery system for coaly activated carbons of vertical internal heating retort furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210470270XA CN102925166A (en) | 2012-11-19 | 2012-11-19 | Tar recovery system for coaly activated carbons of vertical internal heating retort furnace |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1099404A (en) * | 1993-08-25 | 1995-03-01 | 刘运江 | Process of dry distillation using downdraft furnaces |
| CN2315117Y (en) * | 1997-05-20 | 1999-04-21 | 康成 | Purifying and recovering device for coke oven gas |
| CN101230283A (en) * | 2008-02-01 | 2008-07-30 | 抚顺矿业集团有限责任公司 | Oil shale retorting process reclaiming method |
| CN101880540A (en) * | 2010-07-02 | 2010-11-10 | 西北化工研究院 | Low-coalification degree pulverized coal pyrolysis method and product prepared through the same |
| CN102304381A (en) * | 2011-08-05 | 2012-01-04 | 太原理工大学 | Combined type coal tar recovery equipment and coal tar recovery method using same |
-
2012
- 2012-11-19 CN CN201210470270XA patent/CN102925166A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1099404A (en) * | 1993-08-25 | 1995-03-01 | 刘运江 | Process of dry distillation using downdraft furnaces |
| CN2315117Y (en) * | 1997-05-20 | 1999-04-21 | 康成 | Purifying and recovering device for coke oven gas |
| CN101230283A (en) * | 2008-02-01 | 2008-07-30 | 抚顺矿业集团有限责任公司 | Oil shale retorting process reclaiming method |
| CN101880540A (en) * | 2010-07-02 | 2010-11-10 | 西北化工研究院 | Low-coalification degree pulverized coal pyrolysis method and product prepared through the same |
| CN102304381A (en) * | 2011-08-05 | 2012-01-04 | 太原理工大学 | Combined type coal tar recovery equipment and coal tar recovery method using same |
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Application publication date: 20130213 |