CN102706173A - New calcium carbid furnace gas waste heat utilization process - Google Patents
New calcium carbid furnace gas waste heat utilization process Download PDFInfo
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- CN102706173A CN102706173A CN2012101534897A CN201210153489A CN102706173A CN 102706173 A CN102706173 A CN 102706173A CN 2012101534897 A CN2012101534897 A CN 2012101534897A CN 201210153489 A CN201210153489 A CN 201210153489A CN 102706173 A CN102706173 A CN 102706173A
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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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- 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
- Y02P20/10—Process efficiency
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a chemical industry production process, and particularly relates to a new calcium carbid furnace gas waste heat utilization process. The new waste heat utilization process is that dust sedimentation is carried out on CO mix gas (of 600 DEG C) of a calcium carbid furnace so as to reduce the temperature to be 58 DEG C, the CO mix gas enter a heat transfer system to carry out gas cooling, and re-enters a heat energy converter to perform heat energy conversion after the cooling by using the heat transfer system; and hot water after the heat energy conversion is utilized for heating in winter and life hot water as well as cooling in summer. A double fine synthesize energy-saving system is adopted, an energy-saving and consumption-reducing purpose is achieved under the condition of only increasing relatively small running cost, and the original process load is reduced; and the energy utilization rate is improved, the environmental pollution is reduced, the product competitive power is improved, and the production cost is greatly reduced.
Description
Technical field: the present invention relates to a kind of Chemical Manufacture technology, especially a kind of calcium carbide furnace gas UTILIZATION OF VESIDUAL HEAT IN new technology.
Technical background: calcium carbide is a kind of basic chemical industry raw material, and furnace of calcium carbide has sealed furnace and the branch of opening stove, and in order to make open calcium carbide oven reach environmental protection dedusting emission standards, the lid may enclose that adds by opening stove is commonly called as the internal combustion closed type calcium carbide furnace in recent years.Closed type calcium carbide furnace belongs to energy saving and environment friendly furnace of calcium carbide; Because the closure of furnace of calcium carbide,, created necessary environmental condition for focusing on dust in the discharging tail gas, reaching environmental requirement; Improved the operating environment of factory, therefore newly-built calcium carbide production equipment must adopt closed type calcium carbide furnace.But closed type calcium carbide furnace temperature degree has 600-700 ℃ at present, and this part heat does not but make full use of, and in cooling, wastes.
Summary of the invention: the objective of the invention is to overcome former closed calcium carbide furnace recyclegas heat energy in producing the calcium carbide process and fail to utilize; The drawback that wastes energy; Provide energy-saving and cost-reducing, improved a kind of calcium carbide furnace gas UTILIZATION OF VESIDUAL HEAT IN new technology that the product synthesized competitiveness is used.The present invention for realizing the technical scheme that above-mentioned purpose adopted is: carry out dust settling earlier at 600 ℃ of CO gaseous mixtures of furnace of calcium carbide; Drop to 280-260 ℃ through the force one wind cooler again; Drop to 260-225 ℃ through the light breeze cooler then; After cloth bag removes the use that acts as a fuel after heavy the purification, its UTILIZATION OF VESIDUAL HEAT IN new technology is: after 600 ℃ of CO gaseous mixtures of furnace of calcium carbide carry out dust settling earlier, be cooled to 580 ℃; Get into again and carry out the gas cooling in the heat-exchange system, after the heat-exchange system cooling, get into again and carry out thermal power transfer in the heat converter; 40-50 after thermal power transfer ℃ hot water carries out heat supply in winter, emits to return in the heat converter after heat cools to 40 ℃ through radiator then to be heated, so circulation; 20-45 after thermal power transfer ℃ hot water is the domestic hot-water; 7-12 after thermal power transfer ℃ cold water carries out summer cooling, absorbs then to get back to after being raised to 12 ℃ behind the heat to emit heat in the heat converter, continues cooling again, so circulation.
The invention has the beneficial effects as follows: owing to adopted two good comprehensive energy-saving systems; Only increasing less operating cost, when reducing material temperature, the office and the required hot and cold amount of living are being provided; Final realization technology used heat utilizes, and has reached energy saving purposes.During every cover production line oepration at full load, gaseous mixture is dropped to 240 ℃ from 600 ℃ emit the heat amount of energy saving and be roughly equal to mark coal 35.5kg/h, the whole year operation time calculated according to 8000 hours, economized on coal the whole year and amounted to 1,890,000 yuan of RMB; Refrigeration is practiced thrift 131.2 ten thousand yuan; Systematic running cost is with 440,000 yuan; Ten thousand yuan of year synthesis energy saving benefit=189+131.2-44=276.2, and reduce former technical load, improved energy utilization rate and product competitiveness, reduced environmental pollution, can significantly reduce production costs.
Description of drawings: Fig. 1 is a process chart of the present invention
The specific embodiment: embodiment 1: as shown in Figure 1; Carry out dust settling earlier at 600 ℃ of CO gaseous mixtures of furnace of calcium carbide; Drop to 280-260 ℃ through the force one wind cooler again, drop to 260-225 ℃ through the light breeze cooler then, after cloth bag removes the use that acts as a fuel after heavy the purification; Its UTILIZATION OF VESIDUAL HEAT IN new technology is: after 600 ℃ of CO gaseous mixtures of furnace of calcium carbide carry out dust settling earlier; Be cooled to 580 ℃, get into again and carry out the gas cooling in the heat-exchange system, after the heat-exchange system cooling, get into again and carry out thermal power transfer in the heat converter; 40-50 after thermal power transfer ℃ hot water carries out heat supply in winter, emits to return in the heat converter after heat cools to 40 ℃ through radiator then to be heated, so circulation; 20-45 after thermal power transfer ℃ hot water is the domestic hot-water; 7-12 after thermal power transfer ℃ cold water carries out summer cooling, absorbs then to get back to after being raised to 12 ℃ behind the heat to emit heat in the heat converter, continues cooling again, so circulation.
Embodiment: 2: as shown in Figure 1, the circulation of described heat converter after 32 ℃ of recirculated waters get into heat converter, absorbs to get back in the heat converter behind the heat to 40 ℃ and cools off.
Embodiment 3: as shown in Figure 1, described after 600 ℃ of CO gaseous mixtures of furnace of calcium carbide carry out dust settling earlier, be cooled to 580 ℃; Get into again and carry out the gas cooling in the heat-exchange system; When being cooled to 250 ℃, get in the electrical tar precipitator, calcium carbide furnace gas is implemented to purify, reclaim coal tar; Through the furnace gas after purifying, use again acts as a fuel after cooling of light breeze cooler and bag-type dust purification.
Embodiment 4: operation principle of the present invention and furnace gas parameter are:
(1) operation principle is: utilize heat in heat exchanger and the furnace gas to carry out heat exchange and ripe at present lithium bromide and heat refrigeration system and combine, utilize waste heat to be used for heating and cooling and domestic hot-water.
(2) the furnace gas parameter is: 600 ℃ of temperature, require to cool to about 250, and flue gas also might reach 800-1000 ℃ moment in running, but normal temperature is 600 ℃ of pressure-5-5PaG.
Claims (3)
1. calcium carbide furnace gas UTILIZATION OF VESIDUAL HEAT IN new technology; Carry out dust settling earlier at 600 ℃ of CO gaseous mixtures of furnace of calcium carbide; Drop to 280-260 ℃ through the force one wind cooler again, drop to 260-225 ℃ through the light breeze cooler then, after cloth bag removes the use that acts as a fuel after heavy the purification; It is characterized in that its UTILIZATION OF VESIDUAL HEAT IN new technology is: after 600 ℃ of CO gaseous mixtures of furnace of calcium carbide carry out dust settling earlier; Be cooled to 580 ℃, get into again and carry out the gas cooling in the heat-exchange system, after the heat-exchange system cooling, get into again and carry out thermal power transfer in the heat converter; 40-50 after thermal power transfer ℃ hot water carries out heat supply in winter, emits to return in the heat converter after heat cools to 40 ℃ through radiator then to be heated, so circulation; 20-45 after thermal power transfer ℃ hot water is the domestic hot-water; 7-12 after thermal power transfer ℃ cold water carries out summer cooling, absorbs then to get back to after being raised to 12 ℃ behind the heat to emit heat in the heat converter, continues cooling again, so circulation.
2. a kind of calcium carbide furnace gas UTILIZATION OF VESIDUAL HEAT IN new technology according to claim 1 is characterized in that the circulation of described heat converter, after 32 ℃ of recirculated waters get into heat converter, absorbs to get back in the heat converter behind the heat to 40 ℃ and cools off.
3. a kind of calcium carbide furnace gas UTILIZATION OF VESIDUAL HEAT IN new technology according to claim 1; It is characterized in that described after 600 ℃ of CO gaseous mixtures of furnace of calcium carbide carry out dust settling earlier; Be cooled to 580 ℃, get into again and carry out the gas cooling in the heat-exchange system, when being cooled to 250 ℃, get in the electrical tar precipitator; Calcium carbide furnace gas is implemented to purify, reclaim coal tar; Through the furnace gas after purifying, use again acts as a fuel after cooling of light breeze cooler and bag-type dust purification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101534897A CN102706173A (en) | 2012-05-08 | 2012-05-08 | New calcium carbid furnace gas waste heat utilization process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101534897A CN102706173A (en) | 2012-05-08 | 2012-05-08 | New calcium carbid furnace gas waste heat utilization process |
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| Publication Number | Publication Date |
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| CN102706173A true CN102706173A (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012101534897A Pending CN102706173A (en) | 2012-05-08 | 2012-05-08 | New calcium carbid furnace gas waste heat utilization process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759546A (en) * | 2014-01-21 | 2014-04-30 | 新疆中泰矿冶有限公司 | Calcium carbide furnace purification ash back-to-furnace combustion system |
| CN104324730A (en) * | 2012-12-28 | 2015-02-04 | 邓世碧 | Catalyst for calcium carbide furnace gas deoxidation and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11179130A (en) * | 1997-12-25 | 1999-07-06 | Nkk Corp | Method and apparatus for treating waste gas from electric furnace for steelmaking |
| CN101435089A (en) * | 2008-12-03 | 2009-05-20 | 北京佰能电气技术有限公司 | System and method for utilizing residual heat of electrolyzer low temperature flue gas |
| CN101995168A (en) * | 2010-11-10 | 2011-03-30 | 甘肃众维卓越节能科技有限公司 | Method for recycling flue gas waste heat of calcium carbide furnace |
| CN202024617U (en) * | 2011-04-26 | 2011-11-02 | 安徽中企能源管理有限公司 | Flue gas waste heat utilization system for arc furnace |
-
2012
- 2012-05-08 CN CN2012101534897A patent/CN102706173A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11179130A (en) * | 1997-12-25 | 1999-07-06 | Nkk Corp | Method and apparatus for treating waste gas from electric furnace for steelmaking |
| CN101435089A (en) * | 2008-12-03 | 2009-05-20 | 北京佰能电气技术有限公司 | System and method for utilizing residual heat of electrolyzer low temperature flue gas |
| CN101995168A (en) * | 2010-11-10 | 2011-03-30 | 甘肃众维卓越节能科技有限公司 | Method for recycling flue gas waste heat of calcium carbide furnace |
| CN202024617U (en) * | 2011-04-26 | 2011-11-02 | 安徽中企能源管理有限公司 | Flue gas waste heat utilization system for arc furnace |
Non-Patent Citations (2)
| Title |
|---|
| 张全 等: "用热管回收余热作热源的溴化锂冷热水机组", 《制冷与空调（四川）》 * |
| 赵庆山 等: "密闭电石炉气净化及综合利用", 《石油化工应用》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104324730A (en) * | 2012-12-28 | 2015-02-04 | 邓世碧 | Catalyst for calcium carbide furnace gas deoxidation and preparation method thereof |
| CN103759546A (en) * | 2014-01-21 | 2014-04-30 | 新疆中泰矿冶有限公司 | Calcium carbide furnace purification ash back-to-furnace combustion system |
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Application publication date: 20121003 |