CN103983119A - Flue gas waste heat utilization method for coal-to-gas perlite expansion furnace - Google Patents
Flue gas waste heat utilization method for coal-to-gas perlite expansion furnace Download PDFInfo
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- CN103983119A CN103983119A CN201410183487.1A CN201410183487A CN103983119A CN 103983119 A CN103983119 A CN 103983119A CN 201410183487 A CN201410183487 A CN 201410183487A CN 103983119 A CN103983119 A CN 103983119A
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- perlite
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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
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The invention relates to a flue gas waste heat utilization method for a coal-to-gas perlite expansion furnace. The flue gas waste heat utilization method comprises the following steps: feeding high-temperature flue gas carrying expanded perlite at about 800 DEG C, which is exhausted from the perlite expansion furnace to a heat pipe exchanger, and heating air to above 500 DEG, and introducing the heated air to a rotary drying kiln to dry perlite ore sand and heat coal gas as a heat source of the perlite expansion furnace; cooling the high-temperature flue gas carrying expanded perlite and then feeding into a cyclone collector, carrying out gas-solid separation, collecting the flue gas carrying powdery expanded perlite of the granular perlite, discharging the flue gas from the cyclone collector, feeding the flue gas into a bag dust collector by a drainage fan, discharging clean gas to the atmosphere and recovering the powdery perlite. According to the flue gas waste heat utilization method, the flue gas waste heat of the perlite expansion furnace can be sufficiently utilized and zero energy consumption of the rotary drying kiln is realized. The coal gas consumption of the perlite expansion furnace is reduced by more than 10 percent.
Description
Technical field
The invention belongs to environmental protection and energy saving technical field of resource utilization.Especially belong to a kind of coal gas furnace for expanding perlite fume afterheat and utilize method, be mainly used in the fume afterheat utilization of coal gas furnace for expanding perlite and gas cleaning.
Background technology
Existing furnace for expanding perlite is divided into coal furnace, gas furnace and electric furnace by thermal source difference.Coal furnace, due to serious to atmosphere pollution, easily crusts in stove, now few employing.Electric furnace energy consumption is high, can only production closed perlite.Gas furnace is due to energy-conservation, can production perforate perlite, and also can production closed perlite and be widely adopted.Fine perlite fume afterheat utilizes, China just began one's study as far back as the nineties in 20th century, but owing to utilizing method, the reason of corollary equipment, UTILIZATION OF VESIDUAL HEAT IN efficiency is not high, application is not extensively along with the development of China's science and technology, a kind of heat is changed exploitation and the black body radiation energy-saving coatings of the high heat exchange of heat pipe of efficiency, the exploitation of insulating mold coating, the appearance of novel rotation dry kiln, the technique that perlite expansion fume afterheat is utilized is more advanced, and it is more reasonable, more scientific that system equipment forms.Energy-saving effect is more remarkable.The technical program is innovated by integrated innovation and introduction digestion again, and a kind of coal gas furnace for expanding perlite fume afterheat of proposition utilizes method just to belong to one of them.
Summary of the invention
The object of this invention is to provide a kind of coal gas furnace for expanding perlite fume afterheat and utilize method, the water-cooled flue of cancelling former furnace for expanding perlite outlet changes heat pipe air-gas-heat exchanger into, for high-temperature flue gas and expanded perlite cooling, produce high temperature (being greater than 500 degrees Celsius) air for the thermal source of rotary drying kiln simultaneously and coal gas is heated.
That utilizes rotary drying kiln discharge has 200 degrees Celsius of above high temperature airs for the combustion air of coal gas furnace for expanding perlite.
Adopt a kind of rotary drying kiln and bag-type dust removing system that utilizes furnace for expanding perlite fume afterheat of my company's design.
Adopt the beneficial effect of the technical program to be: utilize heat exchange of heat pipe, the high fume afterheat of thermal conductivity factor can be fully recycled.
Adopt high temperature air to be soaked with dust adhesion as thermal source and the heating gas heating surface of rotary drying kiln.Heat transfer efficiency is high, stable, freedom from repairs.
Adopt malleation back air suction deashing dust cleaner to process containing powdery perlite flue gas, deduster is simple in structure, invests lowly, and powdery perlite light weight, ponders little little on fan life impact.
Accompanying drawing explanation
Accompanying drawing 1 is the process chart that a kind of coal gas furnace for expanding perlite fume afterheat utilizes method.
The specific embodiment
A kind of coal gas furnace for expanding perlite fume afterheat of the present invention utilizes method, and the specific embodiment again combined process flow chart is further explained as follows:
The coal gas that gas generator 1 produces is sent into gas chamber 2, by the valve 12,13,14 on pipeline, high temperature air is carried out after preheating to the thermal source for rotary drying kiln 4 and expansion furnace 5 to coal gas.
The high-temperature flue gas that puffing furnace 5 is discharged carries fine perlite and enters heat pipe parallel operation 6, carry out heat exchange, flue gas is lowered the temperature, air is heated, air after heating enters 2 pairs of coal gas of gas chamber and heats, enter rotary drying kiln 4 and dry for perlite ore, by the valve 12,13,14 on pipeline, adjusting coal gas and high temperature air amount.
Air blast 8 is for delivery of whirlwind collector 7, and the graininess perlite of collection enters feed bin 9, and simultaneously for heat exchange of heat pipe provides cold air, its air quantity is regulated by the control valve 15,16 on pipeline.
High temperature (the being greater than 200 degrees Celsius) air that rotary drying kiln 4 is discharged enters expansion furnace 5 and makes combustion air.
What whirlwind collector 7 and particle perlite feed bin 9 were discharged is extracted out and is sent into sack cleaner 11 dedustings by air-introduced machine 10 containing the perlitic flue gas of powdery, and pure qi (oxygen) enters atmosphere by sack cleaner top.Powdery perlite is discharged pack from sack cleaner ash bucket baiting valve and is recycled.
This kind of coal gas furnace for expanding perlite fume afterheat utilizes method, can be used for newly-built coal gas expanded perlite production line, also can be used for the transformation of original production line.
Claims (4)
1. a coal gas perlite expansion fume afterheat utilizes method, it is characterized in that: 800 ℃ of above flue gases of high temperature that expansion furnace is got rid of are by gas-gas heat exchanger, the temperature that reduces flue gas and expanded perlite enters whirlwind rewinding and carries out gas solid separation, and reclaiming granular perlite, to add hot-air to 500 degree Celsius above for rotary drying kiln drying pearl ore in sand form and heating gas; Concrete technical process, the coal gas that gas generator (1) produces is sent into gas chamber (2), by the valve on pipeline (12,13,14), high temperature air is carried out after preheating to the thermal source for rotary drying kiln (4) and expansion furnace (5) to coal gas; The high-temperature flue gas that puffing furnace (5) is discharged carries fine perlite and enters heat pipe parallel operation (6), carry out heat exchange, flue gas is lowered the temperature, air is heated, air after heating enters gas chamber (2) coal gas is heated, enter rotary drying kiln (4) and dry for perlite ore, by the valve on pipeline (12,13,14), adjusting coal gas and high temperature air amount; Air blast (8) is for delivery of whirlwind collector (7), and the graininess perlite of collection enters feed bin (9), provides cold air for heat exchange of heat pipe (6) simultaneously, and its air quantity is regulated by the control valve on pipeline (15,16); Rotary drying kiln (4) is discharged and to be greater than the high temperature air of 200 degrees Celsius and to enter expansion furnace (5) and make combustion air; What whirlwind collector (7) and particle perlite feed bin (9) were discharged is extracted out and is sent into sack cleaner (11) dedusting by air-introduced machine (10) containing the perlitic flue gas of powdery, and pure qi (oxygen) enters atmosphere by sack cleaner top; Powdery perlite is discharged pack from sack cleaner ash bucket baiting valve and is recycled.
2. according to a kind of coal gas pearl stone puffing furnace flue gas exhaust heat of claim 1, utilize method, it is characterized in that: described gas-gas heat exchanger is to adopt heat exchange of heat pipe.
3. according to a kind of coal gas furnace for expanding perlite fume afterheat of claim 1, utilize method, it is characterized in that: that from rotary drying kiln, discharges has more than 200 degrees Celsius high temperature air for the combustion air of coal gas expansion furnace.
4. according to a kind of coal gas pearl stone puffing furnace flue gas exhaust heat of claim 1, utilize method, it is characterized in that: the flue gas that contains powdery expanded perlite that whirlwind collector central tube and feed bin are discharged, by air-introduced machine, send into sack cleaner and reclaim powdery perlite, realize the qualified discharge of flue gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410183487.1A CN103983119B (en) | 2014-05-04 | 2014-05-04 | A kind of coal gas furnace for expanding perlite fume afterheat Application way |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410183487.1A CN103983119B (en) | 2014-05-04 | 2014-05-04 | A kind of coal gas furnace for expanding perlite fume afterheat Application way |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103983119A true CN103983119A (en) | 2014-08-13 |
| CN103983119B CN103983119B (en) | 2015-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410183487.1A Expired - Fee Related CN103983119B (en) | 2014-05-04 | 2014-05-04 | A kind of coal gas furnace for expanding perlite fume afterheat Application way |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329948A (en) * | 2014-10-20 | 2015-02-04 | 辽宁科技大学 | Device for using flue gas waste heat of rotary cement kiln to preheat air |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11183049A (en) * | 1997-12-24 | 1999-07-06 | Nkk Corp | Method of treating exhaust gas in electric furnace |
| CN201840958U (en) * | 2010-09-08 | 2011-05-25 | 遵义市贵科科技有限公司 | Flue gas purifying device for graded recovery of expanded perlite in shaft kiln |
| CN102557506A (en) * | 2012-01-12 | 2012-07-11 | 信阳市四通机械制造有限公司 | Complete processing equipment of coal gas expanded perlite |
| CN103030315A (en) * | 2011-09-30 | 2013-04-10 | 遵义市贵科科技有限公司 | Perlite production equipment |
| CN202885493U (en) * | 2012-09-28 | 2013-04-17 | 洛阳安拓窑炉环保有限公司 | Gas energy-saving type expanding equipment for perlite |
| CN203550636U (en) * | 2013-11-13 | 2014-04-16 | 中冶东方工程技术有限公司 | Smoke waste heat utilizing device of ferroalloy electric furnace |
-
2014
- 2014-05-04 CN CN201410183487.1A patent/CN103983119B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11183049A (en) * | 1997-12-24 | 1999-07-06 | Nkk Corp | Method of treating exhaust gas in electric furnace |
| CN201840958U (en) * | 2010-09-08 | 2011-05-25 | 遵义市贵科科技有限公司 | Flue gas purifying device for graded recovery of expanded perlite in shaft kiln |
| CN103030315A (en) * | 2011-09-30 | 2013-04-10 | 遵义市贵科科技有限公司 | Perlite production equipment |
| CN102557506A (en) * | 2012-01-12 | 2012-07-11 | 信阳市四通机械制造有限公司 | Complete processing equipment of coal gas expanded perlite |
| CN202885493U (en) * | 2012-09-28 | 2013-04-17 | 洛阳安拓窑炉环保有限公司 | Gas energy-saving type expanding equipment for perlite |
| CN203550636U (en) * | 2013-11-13 | 2014-04-16 | 中冶东方工程技术有限公司 | Smoke waste heat utilizing device of ferroalloy electric furnace |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329948A (en) * | 2014-10-20 | 2015-02-04 | 辽宁科技大学 | Device for using flue gas waste heat of rotary cement kiln to preheat air |
| CN104329948B (en) * | 2014-10-20 | 2016-04-13 | 辽宁科技大学 | A kind of device utilizing cement rotary kiln preheating air by flue gas afterheat |
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| Publication number | Publication date |
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| CN103983119B (en) | 2015-07-29 |
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