CN201697154U - Air gas preheating temperature regulating device of heating furnace - Google Patents
Air gas preheating temperature regulating device of heating furnace Download PDFInfo
- Publication number
- CN201697154U CN201697154U CN2010290000129U CN201029000012U CN201697154U CN 201697154 U CN201697154 U CN 201697154U CN 2010290000129 U CN2010290000129 U CN 2010290000129U CN 201029000012 U CN201029000012 U CN 201029000012U CN 201697154 U CN201697154 U CN 201697154U
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- China
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- temperature
- gas
- heating furnace
- air
- flue
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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
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Abstract
The utility mode relates to an air gas preheating temperature regulating device of a heating furnace, wherein an air cooler is connected with a T-shaped pipe; one end of the T-shaped pipe is communicated with a high temperature smoke temperature regulating device of which an opening is on a vertical flue of the heating furnace through a high temperature smoke regulating valve while the other end thereof is communicated with a low temperature smoke temperature regulating device arranged on a cross flue of the heating furnace through a low temperature smoke regulating valve. When the smoke temperature exceeds the limit temperature of the heat exchanger, the high temperature smoke regulating valve is opened so that the cold air is blown in the vertical flue of the heating furnace; the smoke temperature is regulated to the upper limit of the temperature of the air heat exchanger so that the air is preheated maximally. Meanwhile, the low temperature smoke regulating valve is opened to regulate the upper limit of the temperature of the gas; the preheating temperature of the gas does not exceed the preset temperature so that the gas is not analyzed in the absence of affecting the preheating temperature of the air heat exchanger; therefore, the device improves the heat exchanging efficiency of the heating furnace.
Description
Technical field
The utility model belongs to the firing equipment field, is specifically related to a kind of in order to improve the flue gas temperature regulating device of heating furnace air and gas preheating temperature.
Background technology
Along with the extensive use of Hot Delivery and Hot Charging of Continuous Casting Slab, the application on the Large-scale Heater of using low-heat value gas of air, gas double pre-heating technology is also more and more general.Concerning the gas preheating device that uses blast furnace coke oven mixed gas, generally require its preheat temperature to be no more than 300 ℃, if surpass this temperature, then the tar in the coal gas is easy to be separated out, and is bonded on the gas regulator, and even causes the gas valve rust to live malfunctioning.In order to guarantee the gas preheating temperature, generally be to adopt at chimney intake to convert the cold wind operation or increase air capacity and carry out the way that hot blast diffuses and solve below 300 ℃.Yet, in the heating furnace actual production process, find, on the one hand be that air preheating temperature does not reach and relates to requirement, have only 450 ℃; Be that the gas preheating temperature but often surpasses design temperature on the other hand, reach more than 300 ℃.In order to guarantee that the gas preheating temperature is no more than 300 ℃, even the flue-gas temperature before the air preheater is no more than 850 ℃ of alarm temperatures, also must open the flue-gas temperature before the dilution air-cooler reduces air preheater, also just reduce air preheating temperature simultaneously inevitably.Especially when to go into the stove steel billet be 500～800 ℃ hot base, when the gas preheating temperature still surpasses alarm temperature behind the unlatching dilution air-cooler, also need open hot blast and diffuse valve and carry out hot blast and diffuse, this has not only wasted electric energy, but also makes the security of residual neat recovering system can not get effective assurance.
In order to control the gas preheating temperature, mainly be to take to convert cold wind and increase air capacity and carry out hot blast and diffuse two kinds of methods at present, and these two kinds of methods all can cause the air preheat effect to descend, and fume afterheat can not fully be reclaimed at chimney intake.In addition, because air, coal gas use amount are subjected to the restriction of heating furnace ability, increase the method for the ability of air heat exchanger by increasing air set of heat exchange tubes number, both increased the resistance in the flue, need increase considerably capital expenditure again, obviously lose more than gain especially.
Summary of the invention
The purpose of this utility model is exactly at above-mentioned defective, provides a kind of simple, is convenient to operation, can effectively control the gas preheating temperature, improves heating furnace sky, the gas preheating temperature-adjusting device of the whole preheat temperature of heat exchanger.
For this reason, the solution taked of the utility model is:
A kind of heating furnace space gas preheat temperature adjusting device is to be made up of air-cooler, low-temperature flue gas temperature-adjusting device, high-temperature flue-gas adjusting device, low-temperature flue gas control valve, high-temperature flue gas control valve and pipeline; Air-cooler connects a "T"-shaped pipeline, "T"-shaped horizontal pipe one end is by the high-temperature flue-gas adjusting device of high-temperature flue gas control valve open communication on the heating furnace vertical heating flue, and the other end is communicated with low-temperature flue gas temperature-adjusting device on being located at the heating furnace horizontal flue by the low-temperature flue gas control valve.
The anterior pipeline of described space gas preheat temperature adjusting device is located between heating furnace the horizontal flue interior air heat exchanger and gas change heater, and is densely covered with hole on the pipe shaft of the anterior pipeline of low-temperature flue gas temperature-adjusting device.
When the heating furnace exhaust gas temperature surpasses the heat exchanger limiting temperature, open cold blower fan and high-temperature flue gas control valve, by the high-temperature flue-gas adjusting device cold wind is blown into the heating furnace vertical heating flue, regulates the temperature SC service ceiling that flue-gas temperature reaches air heat exchanger, make air preheating temperature reach maximum.Simultaneously, open the low-temperature flue gas control valve, make flue gas reach the temperature SC service ceiling of coal gas heat exchange, make the gas preheating temperature be no more than regulation by the low-temperature flue gas temperature-adjusting device.Thereby make the utility model under the condition that does not influence the air heat exchanger preheat temperature, avoided coal gas separating out in heat transfer process, improved the whole heat exchange efficiency of heating furnace heat-exchange system.
Description of drawings
Accompanying drawing is a heating furnace space gas preheat temperature adjusting device structural representation.
Among the figure: heating furnace vertical heating flue 1, high-temperature flue-gas adjusting device 2, high-temperature flue gas control valve 3, air-cooler 4, horizontal pipe 5, low-temperature flue gas control valve 6, heating furnace horizontal flue 7, gas change heater 8, low-temperature flue gas temperature-adjusting device 9, air heat exchanger 10.
The specific embodiment
Below, in conjunction with the accompanying drawings the utility model is described further.
Accompanying drawing is a flue gas of heating furnace temperature-adjusting device structural representation, by accompanying drawing as seen, the flue gas of heating furnace temperature-adjusting device of the utility model is made of high-temperature flue-gas adjusting device 2, high-temperature flue gas control valve 3, air-cooler 4, low-temperature flue gas control valve 6, low-temperature flue gas temperature-adjusting device 9 and corresponding pipeline.
Air-cooler 4 is fixed near above the heating furnace horizontal flue 7 of heating furnace vertical heating flue 1, the "T"-shaped pipeline that the pipeline of connection air-cooler 4 is made up of one section vertical tube and horizontal pipe 5, the left end of "T"-shaped horizontal pipe 5 connects high-temperature flue gas control valve 3, high-temperature flue gas control valve 3 other ends connect high-temperature flue-gas adjusting device 2, and high-temperature flue-gas adjusting device 2 front openings are connected to the side of heating furnace vertical heating flue 1.The right-hand member of "T"-shaped horizontal pipe 5 connects low-temperature flue gas control valve 6 by one section vertical tube, and low-temperature flue gas control valve 6 is communicated with low-temperature flue gas temperature-adjusting device 9 on being located at heating furnace horizontal flue 7.In order to improve the low-temperature flue gas regulating effect, so process on the pipe shaft with low-temperature flue gas temperature-adjusting device 9 anterior pipelines a plurality of evenly or the hole of uneven distribution, simultaneously the anterior pipeline of low-temperature flue gas temperature-adjusting device 9 is arranged between air heat exchanger 10 and the gas change heater 8 in the heating furnace horizontal flue 7, thereby reaches the purpose of raising heat exchanger whole efficiency.
Claims (2)
1. one kind is heated space gas preheat temperature adjusting device, it is characterized in that described flue gas temperature regulating device is made up of air-cooler, low-temperature flue gas temperature-adjusting device, high-temperature flue-gas adjusting device, low-temperature flue gas control valve, high-temperature flue gas control valve and pipeline; Air-cooler connects a "T"-shaped pipeline, "T"-shaped horizontal pipe one end is by the high-temperature flue-gas adjusting device of high-temperature flue gas control valve open communication on the heating furnace vertical heating flue, the other end is communicated with low-temperature flue gas temperature-adjusting device on being located at the heating furnace horizontal flue by the low-temperature flue gas control valve, and the anterior pipeline of flue gas temperature regulating device is located between the air heat exchanger and gas change heater in the heating furnace horizontal flue.
2. heating furnace space gas preheat temperature adjusting device according to claim 1 is characterized in that, is located on the pipe shaft of the anterior pipeline of low-temperature flue gas temperature-adjusting device in the heating furnace horizontal flue and is densely covered with hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010290000129U CN201697154U (en) | 2010-02-08 | 2010-02-08 | Air gas preheating temperature regulating device of heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010290000129U CN201697154U (en) | 2010-02-08 | 2010-02-08 | Air gas preheating temperature regulating device of heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201697154U true CN201697154U (en) | 2011-01-05 |
Family
ID=43398400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010290000129U Expired - Fee Related CN201697154U (en) | 2010-02-08 | 2010-02-08 | Air gas preheating temperature regulating device of heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201697154U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114526612A (en) * | 2022-03-21 | 2022-05-24 | 江苏道和环保科技有限公司 | CSP heating furnace flue gas recirculation waste heat recovery system |
| CN115069781A (en) * | 2022-06-06 | 2022-09-20 | 福建三宝钢铁有限公司 | Controlled rolling and controlled cooling production process of HRB400E nuclear power steel |
-
2010
- 2010-02-08 CN CN2010290000129U patent/CN201697154U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114526612A (en) * | 2022-03-21 | 2022-05-24 | 江苏道和环保科技有限公司 | CSP heating furnace flue gas recirculation waste heat recovery system |
| CN115069781A (en) * | 2022-06-06 | 2022-09-20 | 福建三宝钢铁有限公司 | Controlled rolling and controlled cooling production process of HRB400E nuclear power steel |
| CN115069781B (en) * | 2022-06-06 | 2024-04-12 | 福建三宝钢铁有限公司 | Rolling and cooling control production process of HRB400E nuclear power steel |
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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: 20110105 Termination date: 20160208 |