CN100534896C - Method of utilizing waste heat after boiling furnace in sulfuric acid production - Google Patents
Method of utilizing waste heat after boiling furnace in sulfuric acid production Download PDFInfo
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- CN100534896C CN100534896C CNB200510022528XA CN200510022528A CN100534896C CN 100534896 C CN100534896 C CN 100534896C CN B200510022528X A CNB200510022528X A CN B200510022528XA CN 200510022528 A CN200510022528 A CN 200510022528A CN 100534896 C CN100534896 C CN 100534896C
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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
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The present invention relates to method of utilizing waste heat after boiling furnace in sulfuric acid production. High temperature fume from the boiling furnace is first cooled with shell pass cold air in a fume cooler and then treated in a cyclonic dust collector. The air heated in the fume cooler is separated into two parts, one part to heat water in a water heater and the other part to heat air the blower blows in inside the air preheater. The present invention can utilize waste heat of boiling furnace in lower investment.
Description
Technical field:
The invention belongs to the gas washing in SA production field, be specifically related to the novel method that a kind of used heat utilizes behind the fluidizing furnace.
Background technology:
Domestic and international small sulfuric device, flue gas moves thermal flow process except using waste heat boiler behind the fluidizing furnace, uses more furnace gas cooling process to have at present: water jacket flow process, natural heat dissipation formula burner-gas cooler flow process.To the water jacket flow process, be that high-temperature flue gas water inlet chuck interchanger is lowered the temperature behind the fluidizing furnace, the hot water that is produced uses for technology or life.Because water jacket water side temperature is low, causes being lower than dew-point temperature in low-temperature zone fume side wall surface temperature, condensation acid occurs, causes equipment to rot soon and wear.For natural heat dissipation formula burner-gas cooler flow process, be that high-temperature flue gas is lowered the temperature through natural heat dissipation formula burner-gas cooler behind the fluidizing furnace, though reliability is higher, use at present at most, but the burner-gas cooler heat transfer area is big, and heat all is lost in the air, can't obtain utilizing, and today very nervous at the energy, this also was worthless.For the waste heat boiler flow process, be that high-temperature flue gas advances the waste heat boiler cooling behind the fluidizing furnace, it needs complicated water treatment system and steam system simultaneously, this flow process is generally used on large-scale sulfuric acid apparatus, but because of its output investment ratio bigger, it is uneconomic using on small sulfuric device, and boiler belongs to pressurized vessel again simultaneously, all higher to management and operator's requirement.
Summary of the invention:
The objective of the invention is to avoid various in the past defectives of moving thermal flow process, simultaneously used heat behind the fluidizing furnace is used.
The present invention is the novel method that a kind of used heat utilizes behind the fluidizing furnace.Flow process is seen accompanying drawing 1.From 650～950 ℃ of high-temperature flue gas that fluidizing furnace 1 comes out, advance and enter tornado dust collector 3 after high-temperature flue gas interchanger 2 cools to about 400 ℃, with about 200 ℃ air heating to 400～600 of air preheater 4 ℃, become high temperature air simultaneously.The high temperature air that goes out high-temperature flue gas interchanger 2 divides two-way, one the tunnel advances air preheater 4 will enter high-temperature flue gas interchanger 2 through about the preheating of air to 200 of air blower 5 ℃, so just avoid the furnace gas side low-temperature zone of high-temperature flue gas interchanger 2 dew point corrosion to occur; One the tunnel advances water-heater 6 adds hot water for user's use, can be directly used in heating in the north.Converge after above two-way high temperature air is cooled, temperature still has part of waste heat more than 50 ℃, can directly advance fluidizing furnace, uses for burning, to improve the heat production of fluidizing furnace, heat is fully used, also directly emptying.
Description of drawings:
Accompanying drawing 1 utilizes schema for fluidizing furnace outlet fume waste heat.
Wherein 1 is fluidizing furnace, and 2 is the high-temperature flue gas interchanger, and 3 is tornado dust collector, and 4 is air preheater, and 5 is air blower, and 6 is water-heater.
These equipment are common equipment, and general chemical industry equipment factory all can produce.
Embodiment:
Below in conjunction with drawings and Examples the present invention is described in detail.
Embodiment
With 20,000 tons of pyrite-based sulfuric acid production devices is example.900 ℃ of high-temperature flue gas that come out from fluidizing furnace enter the high-temperature flue gas interchanger, with about 200 ℃ air heat exchange, enter tornado dust collector after dropping to about 400 ℃.The air that air blower is come is preheating to 200 ℃ through preheating of air air preheater device and enters the high-temperature flue gas interchanger, be heated to 600 ℃ by 900 ℃ of high-temperature flue gas, the back separated into two parts comes out, a part is advanced the air preheater preheated air, a part is advanced water-heater and is added hot water, uses for technology and life.The air that comes out from air preheater and water-heater still has part of waste heat, can directly remove fluidizing furnace.
Claims (3)
1, the method that used heat utilizes behind the fluidizing furnace in the gas washing in SA production, it is characterized in that it being 650～950 ℃ of high-temperature flue gas that come out from fluidizing furnace, advance and enter tornado dust collector after the high-temperature flue gas interchanger cools to about 400 ℃, about 200 ℃ the air that air preheater is come is heated to 400～600 ℃ by the high-temperature flue gas interchanger simultaneously, become high temperature air, the high temperature air that goes out the high-temperature flue gas interchanger divides two-way, one the tunnel advances air preheater will enter the high-temperature flue gas interchanger through about preheating of air to 200 that air blower is come ℃, the one tunnel advances water-heater adds hot water and use for the user.
2, the method for utilizing as used heat according to claim 1, it is characterized in that two-way warm air from the high-temperature flue gas interchanger, be cooled behind one tunnel process water-heater, one the tunnel is cooled behind the air that the air preheater heating blower comes, the cooled air of two-way converges, temperature is directly advanced fluidizing furnace more than 50 ℃, uses for burning.
3, the method for utilizing as used heat according to claim 1, it is characterized in that two-way warm air, be cooled behind one tunnel process water-heater that one the tunnel is cooled behind the air that the air preheater heating blower comes from the high-temperature flue gas interchanger, the cooled air of two-way converges, directly discharging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510022528XA CN100534896C (en) | 2005-12-22 | 2005-12-22 | Method of utilizing waste heat after boiling furnace in sulfuric acid production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510022528XA CN100534896C (en) | 2005-12-22 | 2005-12-22 | Method of utilizing waste heat after boiling furnace in sulfuric acid production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1986389A CN1986389A (en) | 2007-06-27 |
| CN100534896C true CN100534896C (en) | 2009-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CNB200510022528XA Active CN100534896C (en) | 2005-12-22 | 2005-12-22 | Method of utilizing waste heat after boiling furnace in sulfuric acid production |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103148705B (en) * | 2013-04-07 | 2014-06-11 | 杨群峰 | Afterheat integral utilization system for sulfuric acid production process |
| CN103983122B (en) * | 2014-05-30 | 2015-09-09 | 灵山县骄丰化工有限公司 | Waste heat overbottom pressure utilization system in gas washing in SA production |
| CN106765202A (en) * | 2016-12-19 | 2017-05-31 | 扬州嘉明环保科技有限公司 | It is the waste heat utilization system and method for the spent acid pyrolysis furnace of raw material containing organic Waste Sulfuric Acid |
| CN107143863A (en) * | 2017-03-24 | 2017-09-08 | 中石化南京工程有限公司 | A kind of spent acid cracking power-economizing method and system |
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2005
- 2005-12-22 CN CNB200510022528XA patent/CN100534896C/en active Active
Non-Patent Citations (4)
| Title |
|---|
| 热管技术在硫酸工业中的应用. 赵辉等.能源工程，第6期. 2002 |
| 热管技术在硫酸工业中的应用. 赵辉等.能源工程，第6期. 2002 * |
| 硫酸装置低温位余热回收及利用途径探析. 许成玲.硫磷设计与粉体工程，第1998年04期. 1998 |
| 硫酸装置低温位余热回收及利用途径探析. 许成玲.硫磷设计与粉体工程，第1998年04期. 1998 * |
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| Publication number | Publication date |
|---|---|
| CN1986389A (en) | 2007-06-27 |
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Address after: Liuhe District of Nanjing City, Jiangsu province 210048 geguan Road No. 699 Patentee after: SINOPEC NANJING CHEMICAL RESEARCH INSTITUTE Co.,Ltd. Address before: Liuhe District of Nanjing City, Jiangsu province 210048 geguan Road No. 699 Patentee before: Nanhua Group Research Institute |