CN201517893U - Industrial furnace combustion smoke waste heat recycling system suitable for fuel gas work conditions - Google Patents
Industrial furnace combustion smoke waste heat recycling system suitable for fuel gas work conditions Download PDFInfo
- Publication number
- CN201517893U CN201517893U CN2009202325252U CN200920232525U CN201517893U CN 201517893 U CN201517893 U CN 201517893U CN 2009202325252 U CN2009202325252 U CN 2009202325252U CN 200920232525 U CN200920232525 U CN 200920232525U CN 201517893 U CN201517893 U CN 201517893U
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- air
- temperature
- air preheater
- glass tube
- heater
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model relates to an industrial furnace combustion smoke waste heat recycling system under fuel gas work conditions, which is mainly used for recycling smoke waste heat of an industrial furnace tubular heating furnace under fuel gas work conditions. The system comprises a high-temperature plate air preheater (4), a low-temperature enamel tube/glass tube type air preheater (7), a draught fan (6) and a blower (9), wherein the smoke inlet of the high-temperature plate air preheater (4) is communicated with a smoke outlet of a convection section of a tubular heating furnace (1), a first stop valve (2) is further arranged on a smoke communicating pipeline which extends out of the convection section of the tubular heating furnace (1) to enter the high-temperature plate air preheater (4), a chimney (8) is connected in the smoke outlet of the low-temperature enamel tube/glass tube type air preheater (7), the blower (9) is communicated with the air inlet of the low-temperature enamel tube/glass tube air preheater (7), and the air outlet of the high-temperature plate type air preheater (4) is connected with a burner of the tubular heating furnace (1). The industrial furnace combustion smoke waste heat recycling system can realize the recover of heat energy in low-temperature section, and reduces the temperature of smoke under dew point temperature of low-temperature smoke.
Description
(1) technical field
The utility model relates to a kind of flue gas waste heat recovery system.Be mainly used in the industrial furnace tubular heater flue gas waste heat recovery of fuel gas operating mode.Belong to the industrial furnace technical field.
(2) background technology
At the petroleum chemical industry tubular heater flue gas waste heat recovery system is set all generally, adopts air preheater,, realize improving the purpose of the thermal efficiency by reducing the flue gas exhaust gas temperature with high-temperature flue gas and Cryogenic air heat exchange.Yet,, contain a certain amount of SO in the final smoke evacuation after the fuel combustion because the fuel of tubular heater is generally fuel oil and fuel gas at present
2, SO
2Excess oxygen in flue gas and the Fe in the dust stratification
2O
3Catalytic action generates SO down
3, SO
3With the H in the flue gas
2O steam generates sulfuric acid vapor, and sulfuric acid vapor condenses on the low-temperature metal heating surface that is lower than flue gas dew point, causes low-temperature dew point corrosion.
Because afterbody low-temperature metal heating surface (carbon steel or stainless steel) dew-point corrosion resistant ability is all very poor, present domestic tubular heater is provided with flue gas waste heat recovery system and all considers exhaust gas temperature is controlled at more than dew-point temperature 10 degree.At present fuel is that the flue gas dew point temperature of fuel oil is generally 135～150 ℃, and fuel is that the flue gas dew point temperature of fuel gas is generally 120～135 ℃ (dew-point temperature is mainly by H in S content and the flue gas in the fuel
2The content decision of O steam).Therefore, there is a big chunk heat to be reclaimed, thereby influences the thermal efficiency of tubular heater.
(3) summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, provides a kind of and can realize the low-temperature zone heat recovery, makes flue-gas temperature reduce to the following industrial furnace combustion product gases residual neat recovering system that is applicable to the fuel gas operating mode of low-temperature flue gas dew-point temperature.
The purpose of this utility model be achieved in that a kind of be applicable to the fuel gas operating mode industrial furnace combustion product gases residual neat recovering system, described system comprises the high temperature plate air preheater, low firing enamel pipe/glass tube regenerative air heater, air-introduced machine and air blast, the gas approach of described high temperature plate air preheater is connected with the exhanst gas outlet of a tubular heater convection section, and going out on the flue gas connecting pipeline that the tubular heater convection section advances the high temperature plate air preheater first stop valve is set, the exhanst gas outlet of this high temperature plate air preheater is connected with the import of air-introduced machine, the outlet of air-introduced machine is connected with the gas approach of low firing enamel pipe/glass tube regenerative air heater, soot blower and water rinse-system are inserted in low firing enamel pipe/glass tube regenerative air heater top, and the exhanst gas outlet of this low firing enamel pipe/glass tube regenerative air heater inserts a chimney; Described air blast is connected with the air intlet of low firing enamel pipe/glass tube regenerative air heater, the air outlet slit of low firing enamel pipe/glass tube regenerative air heater is divided into two-way, one the tunnel is connected with the air intlet of high temperature plate air preheater, the burner of tubular heater is directly inserted on another road, and the air outlet slit of high temperature plate air preheater inserts the burner of tubular heater; Going out on the flue gas connecting pipeline that the high temperature plate air preheater advances air-introduced machine temperature thermocouple is set, on the air communication pipeline of the burner that goes out low firing enamel pipe/glass tube regenerative air heater inlet pipe formula heating furnace control valve is set, this control valve is connected with the described temperature thermocouple signal of telecommunication; The straight-through pipeline of flue gas is set between the exhanst gas outlet of tubular heater convection section and chimney, on the straight-through pipeline of this flue gas second stop valve is set.
From the flue gas and the heat exchange of high temperature plate air preheater of tubular heater convection section, temperature drops to about 160 ℃, is pumped to low firing enamel pipe/glass tube regenerative air heater by air-introduced machine, and temperature is reduced to below 120 ℃, after enter chimney emission.Enter burner combustion after sending into low firing enamel pipe/glass tube regenerative air heater, high temperature plate air preheater from the air in the atmosphere successively by air blast.Final air exit temp satisfies the thermally equilibrated requirement of technology, and general, air exit temp can reach the smoke inlet temperature and subtract 30 ℃.
The beneficial effects of the utility model are:
The utility model is arranged, is regulated control automatically by equipment optimization, realizes the low-temperature zone heat recovery.Effectively prevent the corrosion of low-temperature zone flue gas dew point, flue-gas temperature is reduced to below the low-temperature flue gas dew-point temperature; Make air exit temp can reach the smoke inlet temperature and subtract 30 ℃; Thereby provide the thermal efficiency of tubular heater.
(4) description of drawings
Fig. 1 is applicable to the structural representation of the industrial furnace combustion product gases residual neat recovering system of fuel gas operating mode for the utility model.
Reference numeral among the figure:
Tubular heater 1, first stop valve 2, second stop valve 3, high temperature plate air preheater 4, temperature thermocouple 5, air-introduced machine 6, low firing enamel pipe/glass tube regenerative air heater 7, chimney 8, air blast 9, soot blower and water rinse-system 10, control valve 11, the straight-through pipeline 12 of flue gas.
(5) specific embodiment
Referring to Fig. 1, Fig. 1 is applicable to the structural representation of the industrial furnace combustion product gases residual neat recovering system of fuel gas operating mode for the utility model.As seen from Figure 1, the utility model is applicable to the industrial furnace combustion product gases residual neat recovering system of fuel gas operating mode, is made up of high temperature plate air preheater 4, low firing enamel pipe/glass tube regenerative air heater 7, air blast 9, air-introduced machine 6, temperature thermocouple 5, control valve 11, first stop valve 2, second stop valve 3 and soot blower and water rinse-system 10.The gas approach of described high temperature plate air preheater 4 is connected with the exhanst gas outlet of tubular heater 1 convection section, and going out on the flue gas connecting pipeline that tubular heater 1 convection section advances high temperature plate air preheater 4 first stop valve 2 is set, the exhanst gas outlet of this high temperature plate air preheater 4 is connected with the import of air-introduced machine 6, the outlet of air-introduced machine 6 is connected with the gas approach of low firing enamel pipe/glass tube regenerative air heater 7, soot blower and water rinse-system 10 are inserted in low firing enamel pipe/glass tube regenerative air heater 7 tops, and the exhanst gas outlet of this low firing enamel pipe/glass tube regenerative air heater 7 inserts chimney 8; Described air blast 9 is connected with the air intlet of low firing enamel pipe/glass tube regenerative air heater 7, the air outlet slit of low firing enamel pipe/glass tube regenerative air heater 7 is divided into two-way, one the tunnel is connected with the air intlet of high temperature plate air preheater 4, the burner of tubular heater 1 is directly inserted on another road, and the air outlet slit of high temperature plate air preheater 4 inserts the burner of tubular heater 1; Going out on the flue gas connecting pipeline that high temperature plate air preheater 4 advances air-introduced machine 6 temperature thermocouple 5 is set, on the air communication pipeline of the burner that goes out low firing enamel pipe/glass tube regenerative air heater 7 inlet pipe formula heating furnaces 1 control valve 11 is set, this control valve 11 is connected with described temperature thermocouple 5 signals of telecommunication; The straight-through pipeline 12 of flue gas is set between the exhanst gas outlet of tubular heater 1 convection section and chimney 8, on the straight-through pipeline 12 of this flue gas second stop valve 3 is set.
Claims (1)
1. industrial furnace combustion product gases residual neat recovering system that is used for the fuel gas operating mode, it is characterized in that described system comprises high temperature plate air preheater (4), low firing enamel pipe/glass tube regenerative air heater (7), air-introduced machine (6) and air blast (9), the gas approach of described high temperature plate air preheater (4) is connected with the exhanst gas outlet of a tubular heater (1) convection section, and going out on the flue gas connecting pipeline that tubular heater (1) convection section advances high temperature plate air preheater (4) first stop valve (2) is set, the exhanst gas outlet of this high temperature plate air preheater (4) is connected with the import of air-introduced machine (6), the outlet of air-introduced machine (6) is connected with the gas approach of low firing enamel pipe/glass tube regenerative air heater (7), soot blower and water rinse-system (10) are inserted in low firing enamel pipe/glass tube regenerative air heater (7) top, and the exhanst gas outlet of this low firing enamel pipe/glass tube regenerative air heater (7) inserts a chimney (8); Described air blast (9) is connected with the air intlet of low firing enamel pipe/glass tube regenerative air heater (7), the air outlet slit of low firing enamel pipe/glass tube regenerative air heater (7) is divided into two-way, one the tunnel is connected with the air intlet of high temperature plate air preheater (4), the burner of tubular heater (1) is directly inserted on another road, and the air outlet slit of high temperature plate air preheater (4) inserts the burner of tubular heater (1); Going out on the flue gas connecting pipeline that high temperature plate air preheater (4) advances air-introduced machine (6) temperature thermocouple (5) is set, on the air communication pipeline of the burner that goes out low firing enamel pipe/glass tube regenerative air heater (7) inlet pipe formula heating furnace (1), control valve (11) being set, is this control valve (11) connected with described temperature thermocouple (5) signal of telecommunication? (ditto); The straight-through pipeline (12) of flue gas is set between the exhanst gas outlet of tubular heater (1) convection section and chimney (8), and this flue gas leads directly to second stop valve (3) is set on the pipeline (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202325252U CN201517893U (en) | 2009-09-21 | 2009-09-21 | Industrial furnace combustion smoke waste heat recycling system suitable for fuel gas work conditions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202325252U CN201517893U (en) | 2009-09-21 | 2009-09-21 | Industrial furnace combustion smoke waste heat recycling system suitable for fuel gas work conditions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201517893U true CN201517893U (en) | 2010-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202325252U Expired - Fee Related CN201517893U (en) | 2009-09-21 | 2009-09-21 | Industrial furnace combustion smoke waste heat recycling system suitable for fuel gas work conditions |
Country Status (1)
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|---|---|
| CN (1) | CN201517893U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109405570A (en) * | 2018-12-08 | 2019-03-01 | 大连福佳·大化石油化工有限公司 | Flue gas of heating furnace heat reclaiming system |
| CN110440578A (en) * | 2019-07-29 | 2019-11-12 | 盐城市自强化纤机械有限公司 | A kind of vertical and cylindrical tubular heater |
| CN112577331A (en) * | 2021-01-09 | 2021-03-30 | 武汉轻工大学 | Low-temperature heat recovery method and system for flue gas of gas process furnace |
-
2009
- 2009-09-21 CN CN2009202325252U patent/CN201517893U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109405570A (en) * | 2018-12-08 | 2019-03-01 | 大连福佳·大化石油化工有限公司 | Flue gas of heating furnace heat reclaiming system |
| CN110440578A (en) * | 2019-07-29 | 2019-11-12 | 盐城市自强化纤机械有限公司 | A kind of vertical and cylindrical tubular heater |
| CN112577331A (en) * | 2021-01-09 | 2021-03-30 | 武汉轻工大学 | Low-temperature heat recovery method and system for flue gas of gas process furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: YANGZHOU GAOLIDA TECHNOLOGY + INDUSTRY CO., LTD. Free format text: FORMER OWNER: JIANGSU YANXIN TECHNOLOGY CO., LTD. Effective date: 20120420 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 214426 WUXI, JIANGSU PROVINCE TO: 225802 YANGZHOU, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120420 Address after: 225802 Jiangsu city of Yangzhou province Baoying County Jing Town Horse Camp Road (Jinghe Industrial Zone) Patentee after: Yangzhou Goldstar Technology Industry Co.,Ltd. Address before: 214426 No. 6 Xinqiao Town, Jiangsu, Jiangyin Patentee before: Jiangsu Yanxin Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100630 Termination date: 20160921 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |