CN201361530Y - Flue gas recirculation loop of high-concentration sulfur dioxide reforming device - Google Patents
Flue gas recirculation loop of high-concentration sulfur dioxide reforming device Download PDFInfo
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- CN201361530Y CN201361530Y CNU2009201414121U CN200920141412U CN201361530Y CN 201361530 Y CN201361530 Y CN 201361530Y CN U2009201414121 U CNU2009201414121 U CN U2009201414121U CN 200920141412 U CN200920141412 U CN 200920141412U CN 201361530 Y CN201361530 Y CN 201361530Y
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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
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
The utility model discloses a flue gas recirculation loop of a high-concentration sulfur dioxide reforming device, comprising an SO2 main blower, a heat-cold exchanger, a number one waste heat boiler, a converter, a number two waste heat boiler, a reheating exchanger and a circulating fan; the converter is internally provided with three heat exchangers, wherein the outlet pipeline of the main blower is connected with a heat-cold exchanger shell pass, the outlet pipeline of which is connected with a first heat exchanger shell pass in the converter and then passes through the first layer of the converter, the first heat exchanger shell pass, the second layer of the converter, a second heat exchanger shell pass, and the third layer of the converter; and the outlet of the third layer of the converter is connected with the number two waste heat boiler. The innovative design is more reliable than the original design, and is beneficial to the long-term stable running of an acid preparing system of the high-concentration sulfur dioxide, thus greatly reducing the operating temperature of the circulating fan taken as key equipment, prolonging the service life of the fan, and simultaneously reducing the flow rate of the circulating fan.
Description
Technical field
The utility model relates to the circulation line that a kind of metallurgical off-gas acid-making is provided with, especially a kind of high concentration Sulphur Dioxide device flue gas recirculation pipeline.
Background technology
In the metallurgical off-gas acid-making field, along with the development of nonferrous metallurgy oxygen-rich smelting technology, SO 2 from fume concentration is becoming a reality more than 20%.If adopt conventional concentration sulfur dioxide method for transformation, need sulfur dioxide concentration is diluted to about 12%, the investment of sulphuric acid plant and operating cost will greatly increase, and influence because the raising of the overall economic efficiency that the smelting process progress brings.Therefore, the Sulphur Dioxide technology of cost-effective high concentration becomes the hot issue of metallurgical off-gas acid-making area research.There is company developing new type high temperature catalyst (heatproof can reach 750 ℃) abroad and solves this problem, but still at the experimental stage.Domestic except low temperature overactivity catalyst is developed, also have to propose the thinking that the three-conversion three-absorption conversion process adapts to high concentration sulfur dioxide.And LUREC (Lu Ruikesi) transformation technology of Outokumpu Technology (Otto Tyke) company is a kind of the feeling free to try of aspect technological process this problem being carried out.
The basic principle of LUREC transformation technology is that the flue gas after two layers of catalyst transform in the converter is drawn sub-fraction, sends into converter one deck inlet with circulating fan and recycles.Because the sulfur dioxide in flue gas concentration after two layers of catalyst transform is lower, after one deck flue gas mixes, can reduce the concentration of sulfur dioxide on the one hand.Flue gas after transforming contains a certain amount of sulfur trioxide on the other hand, can suppress the carrying out of Sulphur Dioxide reaction, thereby one deck exhanst gas outlet temperature is controlled in 630 ℃.Adopt this technology can directly handle sulfur dioxide concentration up to 16%～18% flue gas.
Circulating fan is the very crucial equipment of this technology.Circulating fan is regulated by two layers of outlet by the mode of frequency modulation and is entered the flue gas flow of one deck, thereby reaches the purpose that control transforms one deck catalyst temperature.If circulating fan breaks down or is out of service, will cause whole conversion system normally to move, finally cause the sulfur dioxide blower fan to be forced to stop.Therefore, the running status of circulating fan will directly have influence on the production of whole acid making system, and its importance is not second to the sulfur dioxide blower fan.Because two layers of outlet temperature generally all are higher than 500 ℃, circulating fan moves under the condition of high temperature for a long time, and will be affected its service life, and fault rate also can increase to some extent.This also is the greatest weakness place of this technology.
Summary of the invention
The purpose of this utility model is to provide a kind of high concentration Sulphur Dioxide device flue gas recirculation pipeline, and this scheme neither influences the normal enforcement of circulation technology, and the operating temperature of circulating fan is reduced to below 300 ℃.
The technical solution of the utility model is: a kind of high concentration Sulphur Dioxide device flue gas recirculation pipeline, this high concentration Sulphur Dioxide device flue gas recirculation pipeline comprises main blower, cool-heat-exchanger (also can be described as the 5th heat exchanger), No. 1 waste heat boiler, converter (include three heat exchangers, be respectively first, second and the 4th heat exchanger), No. 2 waste heat boilers, cold heat exchanger again (also can be described as the 3rd heat exchanger) and circulating fans.Wherein the main blower export pipeline connects the cool-heat-exchanger shell side, cool-heat-exchanger shell side export pipeline connects the first heat exchanger tube side in the converter, then through three layers of converter one decks, the first heat exchanger shell side, two layers of converters, the second heat exchanger shell side, converter, the outlet of converter three floor connects No. 2 waste heat boilers, No. 2 the heat boiler outlet pipeline is divided into two-way, one the tunnel connects the circulating fan inlet after No. 2 waste heat boiler part heat exchange cooling, the circulating fan export pipeline returns converter one deck; Another road connects the cold tube side of heat exchanger again, and the cold tube side of heat exchanger again outlet connects first absorption tower.The first absorption tower outlet conduit connects the cold shell side of heat exchanger again, the cold shell side of heat exchanger again connects the 4th heat exchanger tube side in the converter, then through five layers of the second heat exchanger tube sides, four layers of converters, the 4th heat exchanger shell side, converter, the outlet of converter five floor connects No. 1 waste heat boiler, No. 1 heat boiler outlet connects the cool-heat-exchanger tube side, and the outlet of cool-heat-exchanger tube side connects second absorption tower.
The design's technical characterictic is: in adopting the technological design of high concentration Sulphur Dioxide, send into the flue gas pipeline that converter one deck recycles by circulating fan, draw in three layers of outlet flue gas pipeline place after the cooling of waste heat boiler (or other heat transmission equipment) recovery section heat.
Advantage of the present utility model is: compare with the flue gas recirculation pipeline of the high concentration Sulphur Dioxide technology LUREC of Outokumpu Technology company, the circulating pipe system that the design adopts is more reasonable, safe, more helps the long-term stability operation of high concentration sulfur dioxide acid making system.On the one hand, because two layers of exit gas temperature are higher,, the material and the performance of blower fan all there is higher requirement generally greater than 500 ℃.And three layers of outlet flue gas through waste heat boiler recovery section heat after temperature be reduced to below 300 ℃, blower fan moves under this temperature, and is relative low with performance demands to its material, the probability that breaks down reduces, corresponding raising in service life.On the other hand, because two layers of outlet of concentration ratio conversion of the sulfur dioxide in flue gas of three layers of outlet of conversion are lower, therefore the amount of circulating gas of drawing is littler than the amount of drawing from two layers, thereby has reduced the flow of circulating fan.Because circulating fan is the key equipment in the high concentration Sulphur Dioxide technology, its normal operation also just provides assurance for the long-term stability operation of high concentration Sulphur Dioxide Conversion System.
Description of drawings
Fig. 1 is the original circulating pipeline structure capable schematic diagram of the utility model high concentration Sulphur Dioxide device flue gas;
Fig. 2 is the utility model high concentration Sulphur Dioxide device flue gas recirculation pipeline structure schematic diagram.
1-main blower, 2-cool-heat-exchanger, 3-1 waste heat boiler, 4-1 waste heat boiler drum, 5-converter, 6-first heat exchanger, 7-second heat exchanger, 8-the 4th heat exchanger, 9-circulating fan, 10-2 waste heat boiler, 11-2 waste heat boiler drum, the cold heat exchanger again of 12-, A-go second absorption tower, C-to go first absorption tower, D-from first adsorption tower smoke, E-steam, F-boiler feedwater from drying tower flue gas, B-
The specific embodiment
A kind of high concentration Sulphur Dioxide device flue gas recirculation pipeline, sulfur dioxide concentration is up to 16%～18%.This high concentration Sulphur Dioxide device flue gas recirculation pipeline comprises main blower 1, cool-heat-exchanger 2 (also can be described as the 5th heat exchanger), No. 1 waste heat boiler 3, converter 5 (include three heat exchangers, be respectively first, second and the 4th heat exchanger), No. 2 waste heat boilers 10, cold heat exchanger again 12 (also can be described as the 3rd heat exchanger) and circulating fans 9.Wherein main blower 1 export pipeline connects cool-heat-exchanger 2 shell sides, cool-heat-exchanger 2 shell side export pipelines connect first heat exchanger, 6 tube sides in the converter 5, then through three layers of converter one decks, first heat exchanger, 6 shell sides, two layers of converters, second heat exchanger, 7 shell sides, converter, the outlet of converter three floor connects No. 2 waste heat boilers 10, No. 2 waste heat boiler 10 export pipelines are divided into two-way, one the tunnel connects circulating fan 9 inlets after No. 2 waste heat boiler 10 part heat exchange cooling, circulating fan 9 export pipelines return converter one deck; Another road connects cold 12 tube sides of heat exchanger again, and cold 12 tube sides of heat exchanger again outlet connects first absorption tower.The first absorption tower outlet conduit connects cold 12 shell sides of heat exchanger again, cold 12 shell sides of heat exchanger again connect the 4th heat exchanger tube side in the converter, then through five layers of second heat exchanger, 7 tube sides, four layers of converters, the 4th heat exchanger shell side, converter, the outlet of converter five floor connects No. 1 waste heat boiler 4, No. 1 waste heat boiler 4 outlets connect cool-heat-exchanger 2 tube sides, and the outlet of cool-heat-exchanger 2 tube sides connects second absorption tower.
Claims (1)
1, a kind of high concentration Sulphur Dioxide device flue gas recirculation pipeline is characterized in that: this high concentration Sulphur Dioxide device flue gas recirculation pipeline comprises SO
2Main blower, cool-heat-exchanger, No. 1 waste heat boiler, converter, No. 2 waste heat boilers, cold heat exchanger again and circulating fans; Converter includes three heat exchangers, be respectively first, the second and the 4th heat exchanger, wherein the main blower export pipeline connects the cool-heat-exchanger shell side, cool-heat-exchanger shell side export pipeline connects the first heat exchanger tube side in the converter, then through converter one deck, the first heat exchanger shell side, two layers of converters, the second heat exchanger shell side, three layers of converters, the outlet of converter three floor connects No. 2 waste heat boilers, No. 2 the heat boiler outlet pipeline is divided into two-way, one the tunnel connects the circulating fan inlet after No. 2 waste heat boiler part heat exchange cooling, the circulating fan export pipeline returns converter one deck; Another road connects the cold tube side of heat exchanger again, the cold tube side of heat exchanger again outlet connects first absorption tower, the first absorption tower outlet conduit connects the cold shell side of heat exchanger again, the cold shell side of heat exchanger again connects the 4th heat exchanger tube side in the converter, then through five layers of the second heat exchanger tube sides, four layers of converters, the 4th heat exchanger shell side, converter, the outlet of converter five floor connects No. 1 waste heat boiler, No. 1 heat boiler outlet connects the cool-heat-exchanger tube side, and the outlet of cool-heat-exchanger tube side connects second absorption tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201414121U CN201361530Y (en) | 2009-01-06 | 2009-01-06 | Flue gas recirculation loop of high-concentration sulfur dioxide reforming device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201414121U CN201361530Y (en) | 2009-01-06 | 2009-01-06 | Flue gas recirculation loop of high-concentration sulfur dioxide reforming device |
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| CN201361530Y true CN201361530Y (en) | 2009-12-16 |
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| CNU2009201414121U Expired - Fee Related CN201361530Y (en) | 2009-01-06 | 2009-01-06 | Flue gas recirculation loop of high-concentration sulfur dioxide reforming device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102079511A (en) * | 2011-01-05 | 2011-06-01 | 金隆铜业有限公司 | Acid making system suitable for high-concentration sulfur dioxide-containing flue gas |
| CN102095312A (en) * | 2010-11-07 | 2011-06-15 | 湖南新恒光科技有限公司 | Method, process and equipment for recycling low-temperature afterheat generated in roasting process of producing sulfuric acid from iron pyrite |
| CN102336396A (en) * | 2011-09-27 | 2012-02-01 | 宜兴市化工成套设备有限公司 | Continuous heat transfer sulfur dioxide conversion process |
| CN102910592A (en) * | 2012-10-31 | 2013-02-06 | 宜兴市化工成套设备有限公司 | Quasi-isothermal venturi converter for heat energy substitution |
| CN103011092A (en) * | 2012-12-28 | 2013-04-03 | 中国瑞林工程技术有限公司 | Technique for preparing sulfuric acid from SO2 by non-equilibrium state high-concentration twice conversion |
| CN103043626A (en) * | 2012-10-31 | 2013-04-17 | 宜兴市化工成套设备有限公司 | Horizontal quasi isothermal converter |
| CN103072956A (en) * | 2012-12-31 | 2013-05-01 | 中国瑞林工程技术有限公司 | Flue gas processing method and system |
| CN109761203A (en) * | 2019-03-04 | 2019-05-17 | 长沙有色冶金设计研究院有限公司 | A kind of high concentration SO2Convert acid-making process |
-
2009
- 2009-01-06 CN CNU2009201414121U patent/CN201361530Y/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095312A (en) * | 2010-11-07 | 2011-06-15 | 湖南新恒光科技有限公司 | Method, process and equipment for recycling low-temperature afterheat generated in roasting process of producing sulfuric acid from iron pyrite |
| CN102095312B (en) * | 2010-11-07 | 2012-05-02 | 湖南新恒光科技有限公司 | Process for recycling sulfuric acid from iron pyrite by low-temperature afterheat |
| CN102079511B (en) * | 2011-01-05 | 2012-11-07 | 金隆铜业有限公司 | Acid making system suitable for high-concentration sulfur dioxide-containing flue gas |
| CN102079511A (en) * | 2011-01-05 | 2011-06-01 | 金隆铜业有限公司 | Acid making system suitable for high-concentration sulfur dioxide-containing flue gas |
| CN102336396A (en) * | 2011-09-27 | 2012-02-01 | 宜兴市化工成套设备有限公司 | Continuous heat transfer sulfur dioxide conversion process |
| CN102336396B (en) * | 2011-09-27 | 2013-04-10 | 宜兴市化工成套设备有限公司 | Continuous heat transfer sulfur dioxide conversion process |
| CN102910592B (en) * | 2012-10-31 | 2014-04-09 | 宜兴市化工成套设备有限公司 | Quasi-isothermal venturi converter for heat energy substitution |
| CN102910592A (en) * | 2012-10-31 | 2013-02-06 | 宜兴市化工成套设备有限公司 | Quasi-isothermal venturi converter for heat energy substitution |
| CN103043626A (en) * | 2012-10-31 | 2013-04-17 | 宜兴市化工成套设备有限公司 | Horizontal quasi isothermal converter |
| CN103011092A (en) * | 2012-12-28 | 2013-04-03 | 中国瑞林工程技术有限公司 | Technique for preparing sulfuric acid from SO2 by non-equilibrium state high-concentration twice conversion |
| CN103011092B (en) * | 2012-12-28 | 2015-03-18 | 中国瑞林工程技术有限公司 | Technique for preparing sulfuric acid from SO2 by non-equilibrium state high-concentration twice conversion |
| CN103072956A (en) * | 2012-12-31 | 2013-05-01 | 中国瑞林工程技术有限公司 | Flue gas processing method and system |
| CN103072956B (en) * | 2012-12-31 | 2015-04-15 | 中国瑞林工程技术有限公司 | Flue gas processing method and system |
| CN109761203A (en) * | 2019-03-04 | 2019-05-17 | 长沙有色冶金设计研究院有限公司 | A kind of high concentration SO2Convert acid-making process |
| CN109761203B (en) * | 2019-03-04 | 2021-07-02 | 长沙有色冶金设计研究院有限公司 | High-concentration SO2Conversion acid-making process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091216 Termination date: 20180106 |