CN101113340A - Carbonization process of high-volatilize content coal - Google Patents
Carbonization process of high-volatilize content coal Download PDFInfo
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- CN101113340A CN101113340A CNA2006101034759A CN200610103475A CN101113340A CN 101113340 A CN101113340 A CN 101113340A CN A2006101034759 A CNA2006101034759 A CN A2006101034759A CN 200610103475 A CN200610103475 A CN 200610103475A CN 101113340 A CN101113340 A CN 101113340A
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Abstract
The invention relates to a carbonization process of high volatile coal, a direct heating process that heats and distills high volatile coal by using high temperature cycle gas in a shaft furnace as a carrier. Lump coal that moves up and down in the shaft furnace is heated by rising hot gas and the discharged volatiles form char; the char is cooled by cold gas that is introduced by the furnace bottom from the lower part of a furnace and then discharged outside the furnace; the rising gas is introduced outside finally by the furnace top, washed, purified and cooled; one part is taken as a cycle cooling medium, one part is taken as a cycle heat carrier after being per-heated and the rest is taken as a gas external supply and the calorific value is equal to that of a coke oven gas.
Description
Technical field:
The invention belongs to the coal carbonization production field, belonging to a kind of is the direct heating technology that carrier heats the destructive distillation high volatile coal with high temperature circulation coal gas.
Background technology:
Coal carbonization technology is a kind of coal of height being waved branch, be converted into the technology of semicoke for young coals such as brown coal, simultaneously can obtain byproducts such as tar and coal gas, traditional distillation process is an indirect heating, and is unlikely burned to guarantee coal, also has a kind of direct heating method with solid thermal carriers, but equipment all more complicated and efficient is low, and investment is high, and not only inefficiency of simple direct heating is adopted in domestic a large amount of local method destructive distillation, and coal gas and tar can not reclaim, especially contaminate environment.
The present invention adopts shaft furnace cyclic high-temperature coal gas direct heating distillation process, the simple and reverse-flow thermo-efficiency height of shaft furnace of equipment, and coal gas and tar all can reclaim; heat energy is fully reclaimed and is utilized; system's good leak tightness, favourable to environment protection, the invention belongs to environmentally friendly technology.
Summary of the invention:
Thereby make the complicated deficiency of equipment in order to overcome traditional distillation process indirect heating, it is the direct heating technology of carrier that the present invention adopts with high temperature circulation coal gas, the countercurrent heat-transfer of the shaft furnace that adopts has the high advantage of efficient, and the more traditional destructive distillation simplification of equipment structure, thereby reduces investment outlay.Adopt circulating gas as heat-eliminating medium, both guaranteed unlikely oxidation of semicoke and burning, justice can make the waste heat of semicoke be recycled.The coal gas waste heat adopts heat accumulating type and oxygen partial combustion mode, is heated to 900～1200 ℃, and its heat is as pyrogenous thermal source.
Technical scheme:
The technical solution adopted for the present invention to solve the technical problems is: in shaft furnace, the coal of high volatile is heated intensification in the relative counter-current process with heating gas, contained volatile matter is overflowed, and with discharging out of the furnace from furnace roof together as the heating gas of thermal barrier and as the cooled coal gas of heat-eliminating medium.Because institute's heat content is absorbed by coal in the coal gas, so the furnace top gas temperature of discharging is not high, and the semicoke product of discharging from the bottom also is cooled and lowers the temperature, and therefore total heat energy is fully used.
The coal gas that furnace roof is discharged has higher calorific value through cleaning and after reclaiming tar, and is approximate with coke-oven gas, except that part from being used as destructive distillation thermal source and part as the heat-eliminating medium, also have an appointment and 1/3 can do outer giving gas.This coal gas of high temperature direct-fired technical scheme that circulates is the principal feature that the present invention is different from traditional semicoke distillation process.
Below further specify the present invention by drawings and Examples.
Description of drawings:
First gang of coal gas 13-of 1-gas retort 2-cooled coal gas divider 3-feeder 4-removal device 5-stock gas outlet 6-scrubber tower 7-water-and-oil separator 8-electric fishing device 9-press 10-second gang of cooled coal gas 11-heating gas divider 12-supplies combustion gas 14-preheater 15-feed coal 16-semicoke outward
The shaft furnace (1) that is used for Pyrolysis Char is sent into high temperature heating gas distributor (11) by the middle part, and heat is passed Give lump coal or the moulded coal (15) of being packed into by upper feeder (3), coal cinder is progressively discharged volatilization in the decline process Divide and become semicoke. After the rising cooled coal gas cooling that this hot semicoke is introduced from the bottom in continuing decline, From removal device (4) unload come out of the stove outside, i.e. semicoke product. The coal gas (5) that furnace roof is discharged is through aeration tower (6)
And electric trapper (8) cleaning and reclaim tar and water by oil water separator (7). The clean coal that obtains Gas is divided into three strands through pressuring machine (9), and one cold purified gas (12) is introduced furnace bottom and advanced through distributor (2) Enter semicoke Come out of the stove after making its cooling in the bed of material; Second strand (10) are heated to 900～1200 ℃ of high temperature through preheater (14) Introduced by shaft furnace middle part as thermophore (11) afterwards; The 3rd strand (13) are remaining purified gas output, do For giving gas outward, its calorific capacity and coke-stove gas are suitable.
Embodiment:
With 1000kg lump coal is benchmark, is added by the shaft furnace top, and the heating gas 350m after the preheating is introduced at the shaft furnace middle part
3(1150 ℃ of temperature) penetrates the coal seam in the decline, makes its heating and discharges volatile matter, thereby form semicoke, and semicoke continues to descend in stove, introduces 550m with the bottom
3The relative countercurrent movement of rising cooled coal gas, cooled coal gas is taken away the heat in the semicoke and import in the coal gas, semicoke is come out of the stove after then being cooled, weight is 600kg, produces raw gas 1310m simultaneously
3, derive from furnace roof, behind cleaning, a part is used for destructive distillation as thermal barrier after regenerator is preheated to 1150 ℃, and is a part of from the heat-eliminating medium of furnace bottom introducing as hot semicoke, and residue 300m3 is as the outer commercial natural gas that supplies, and recovery tar 20kg.
Claims (4)
1. the present invention relates to a kind of carbonization process of high-volatilize content coal, it is characterized in that technology mode adopts in the shaft furnace with cyclic high-temperature coal gas as carrier, makes coal directly be heated destructive distillation.From top to bottom be countercurrent flow with from bottom to top elevated temperature heat coal gas through exsiccant lump coal in shaft furnace, coal is overflowed volatile matter by heating progressively, realizes that retort process also changes into semicoke, discharges from the bottom after cooling off.Coal gas is then drawn by furnace roof, and as the destructive distillation heating medium, a part is as the heat-eliminating medium of hot semicoke through preheating for a part, and remainder is as supplying combustion gas outward.
2. according to the described method of claim 1, the coal gas that it is characterized in that being drawn by furnace roof is after wash heat, and a part heats coal and unlikely oxidation as thermal barrier through being preheated to 900～1200 ℃.
3. according to claims 1 described method, it is characterized in that another part of the purified gas of being drawn by furnace roof is introduced by furnace bottom, as the circulating cooling medium of hot semicoke, hot semicoke cooling back is discharged, and unlikely oxidized burning.
4. according to the described method of claim 1, as the coal gas of thermal barrier, adopt the regenerator preheating, or adopt the heating of oxygen partial combustion process, its thermal source is all from the part purified gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101034759A CN101113340A (en) | 2006-07-24 | 2006-07-24 | Carbonization process of high-volatilize content coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNA2006101034759A CN101113340A (en) | 2006-07-24 | 2006-07-24 | Carbonization process of high-volatilize content coal |
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| CN101113340A true CN101113340A (en) | 2008-01-30 |
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| CNA2006101034759A Pending CN101113340A (en) | 2006-07-24 | 2006-07-24 | Carbonization process of high-volatilize content coal |
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Cited By (14)
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| CN101885973A (en) * | 2010-06-28 | 2010-11-17 | 周松涛 | Dry distillation production process for lignite or high volatile coal |
| CN101974343A (en) * | 2010-10-25 | 2011-02-16 | 周松涛 | Vibrated fluidized bed dry distillation process for upgrading lignite |
| CN101984021A (en) * | 2010-10-26 | 2011-03-09 | 西峡龙成特种材料有限公司 | Heating gas circulating type coal substance decomposing method and special equipment |
| CN102388119A (en) * | 2009-03-24 | 2012-03-21 | 杰富意钢铁株式会社 | Method for producing biomass charcoal and device for producing biomass charcoal to be used therefor |
| CN101514291B (en) * | 2009-02-27 | 2012-10-10 | 西安建筑科技大学 | Method for dry quenching by internal heat and low temperature carbonization of coal |
| CN102732275A (en) * | 2012-07-17 | 2012-10-17 | 苏州劲仑能源科技有限公司 | Lignite dry distillation device using fire coal hot air furnace as heat supply |
| CN102732274A (en) * | 2012-07-17 | 2012-10-17 | 苏州劲仑能源科技有限公司 | Brown coal dry-distillation method using coal hot air furnace to supply heat |
| CN102807879A (en) * | 2012-08-17 | 2012-12-05 | 济钢集团有限公司 | Coke oven gas waste heat utilization device |
| CN102839001A (en) * | 2011-06-20 | 2012-12-26 | 中国科学院过程工程研究所 | Pyrolysis apparatus and method for production of light tar |
| CN103788963A (en) * | 2014-02-22 | 2014-05-14 | 石家庄新华能源环保科技股份有限公司 | External-heating semi-coke furnace |
| CN102127460B (en) * | 2010-01-13 | 2014-06-04 | 中国科学院过程工程研究所 | Low temperature pyrolysis method of solid fuel in counter flow downer pyrolysis reactor |
| CN104004534A (en) * | 2014-05-30 | 2014-08-27 | 济钢集团有限公司 | System for processing tar residues by using waste heat of raw coke oven gas |
| CN104861992A (en) * | 2015-05-14 | 2015-08-26 | 中国科学院过程工程研究所 | Pyrolysis device and method for producing light tar and clean gas |
| CN108910964A (en) * | 2018-06-27 | 2018-11-30 | 扬州大学 | A kind of combustion method quickly prepares powder unit |
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- 2006-07-24 CN CNA2006101034759A patent/CN101113340A/en active Pending
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| CN101514291B (en) * | 2009-02-27 | 2012-10-10 | 西安建筑科技大学 | Method for dry quenching by internal heat and low temperature carbonization of coal |
| CN102388119A (en) * | 2009-03-24 | 2012-03-21 | 杰富意钢铁株式会社 | Method for producing biomass charcoal and device for producing biomass charcoal to be used therefor |
| CN102388119B (en) * | 2009-03-24 | 2015-11-25 | 杰富意钢铁株式会社 | The manufacture method of biomass charcoal and the manufacturing installation for biomass charcoal wherein |
| CN102127460B (en) * | 2010-01-13 | 2014-06-04 | 中国科学院过程工程研究所 | Low temperature pyrolysis method of solid fuel in counter flow downer pyrolysis reactor |
| CN101885973B (en) * | 2010-06-28 | 2013-02-06 | 周松涛 | Dry distillation production process for lignite or high volatile coal |
| CN101885973A (en) * | 2010-06-28 | 2010-11-17 | 周松涛 | Dry distillation production process for lignite or high volatile coal |
| CN101974343A (en) * | 2010-10-25 | 2011-02-16 | 周松涛 | Vibrated fluidized bed dry distillation process for upgrading lignite |
| US20120304537A1 (en) * | 2010-10-26 | 2012-12-06 | Shucheng Zhu | Coal decomposition method and equipment in cycle heating gas style |
| CN101984021B (en) * | 2010-10-26 | 2011-08-10 | 西峡龙成特种材料有限公司 | Heating gas circulating type coal substance decomposing equipment |
| EA024446B1 (en) * | 2010-10-26 | 2016-09-30 | Сися Дрегон Инту Спешиал Матириал Ко., Лтд. | Coal decomposition method and equipment in cycle heating gas style |
| WO2012055122A1 (en) * | 2010-10-26 | 2012-05-03 | 西峡龙成特种材料有限公司 | Method for decomposing coal material with circulating heating gas and equipment thereof |
| US9260665B2 (en) | 2010-10-26 | 2016-02-16 | Shucheng Zhu | Coal decomposition method and equipment in cycle heating gas style |
| EP2634235A4 (en) * | 2010-10-26 | 2014-10-29 | Xixia Dragon Into Special Mat | Method for decomposing coal material with circulating heating gas and equipment thereof |
| EP2634235A1 (en) * | 2010-10-26 | 2013-09-04 | Xixia Dragon Into Special Material Co. Ltd | Method for decomposing coal material with circulating heating gas and equipment thereof |
| AU2010362961B2 (en) * | 2010-10-26 | 2014-06-26 | Xixia Dragon Into Special Material Co., Ltd. | Coal decomposition method and equipment in cycle heating gas style |
| CN101984021A (en) * | 2010-10-26 | 2011-03-09 | 西峡龙成特种材料有限公司 | Heating gas circulating type coal substance decomposing method and special equipment |
| CN102839001A (en) * | 2011-06-20 | 2012-12-26 | 中国科学院过程工程研究所 | Pyrolysis apparatus and method for production of light tar |
| CN102732275A (en) * | 2012-07-17 | 2012-10-17 | 苏州劲仑能源科技有限公司 | Lignite dry distillation device using fire coal hot air furnace as heat supply |
| CN102732274A (en) * | 2012-07-17 | 2012-10-17 | 苏州劲仑能源科技有限公司 | Brown coal dry-distillation method using coal hot air furnace to supply heat |
| CN102807879A (en) * | 2012-08-17 | 2012-12-05 | 济钢集团有限公司 | Coke oven gas waste heat utilization device |
| CN103788963A (en) * | 2014-02-22 | 2014-05-14 | 石家庄新华能源环保科技股份有限公司 | External-heating semi-coke furnace |
| CN103788963B (en) * | 2014-02-22 | 2016-02-10 | 石家庄新华能源环保科技股份有限公司 | The blue charcoal stove of a kind of external-heat |
| CN104004534A (en) * | 2014-05-30 | 2014-08-27 | 济钢集团有限公司 | System for processing tar residues by using waste heat of raw coke oven gas |
| CN104861992A (en) * | 2015-05-14 | 2015-08-26 | 中国科学院过程工程研究所 | Pyrolysis device and method for producing light tar and clean gas |
| CN108910964A (en) * | 2018-06-27 | 2018-11-30 | 扬州大学 | A kind of combustion method quickly prepares powder unit |
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