CN101482266A - Low-calorific value gas double pre-heating heat accumulation type radiant tube - Google Patents
Low-calorific value gas double pre-heating heat accumulation type radiant tube Download PDFInfo
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- CN101482266A CN101482266A CNA200910076577XA CN200910076577A CN101482266A CN 101482266 A CN101482266 A CN 101482266A CN A200910076577X A CNA200910076577X A CN A200910076577XA CN 200910076577 A CN200910076577 A CN 200910076577A CN 101482266 A CN101482266 A CN 101482266A
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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 invention discloses a low heat-value coal gas double preheating regenerative radiant tube; two regenerative burners are installed on the radiant tube and are provided with combustion air inlets and low heat-value coal gas inlets; a small combustion nozzle for ignition and continuous light is installed on the regenerative burner; and two or more flame ejection openings are installed on the regenerative burner. Low heat-value coal gas is used as energy, replaces relatively expensive electrical energy and superior energy with higher heat-value, and the recycled heat energy is used for heating the coal gas and combustion air. The technology of heat storage reversing combustion is used so that the temperature distribution at the surface of the radiant tube is more uniform and the surface temperature difference of the whole radiant tube is small. The radiant tube can be widely applied to industries such as metallurgy, medicine, tobacco, spinning and food, thereby having the functions of saving resources, reducing energy consumption and cost, and protecting environment.
Description
Technical field
The present invention relates to a kind of burner, relate in particular to a kind of low-calorific value gas double pre-heating heat accumulation type radiant tube.
Background technology
Radiant tube is a kind of heater commonly used in the industries such as metallurgy, medicine, tobacco, weaving, food, and in the prior art, the most of gaseous fuel of electric energy or high-quality that adopts of radiant tube is realized heating.
There is following shortcoming at least in prior art:
Electric energy is the high-quality energy, is used for adding a kind of waste that thermal material is the energy, production cost height; Adopt the gaseous fuel of high-quality, because the particularity of radiant tube, exhaust gas temperature surpasses 500 ℃, and heat utilization efficiency is lower, and efficient is no more than 50%.
Summary of the invention
The purpose of this invention is to provide the low-calorific value gas double pre-heating heat accumulation type radiant tube that a kind of fuel cost is low, heat utilization efficiency is high.
The objective of the invention is to be achieved through the following technical solutions:
Low-calorific value gas double pre-heating heat accumulation type radiant tube of the present invention, described radiant tube is provided with at least two heat-storage type burners, described heat-storage type burner is provided with combustion air inlet and waste gas outlet and low-heat value gas inlet and waste gas outlet, described heat-storage type burner is provided with start-up burner, one or more flame separation sleeves have been installed in the described radiant tube, and described heat-storage type burner is provided with two or more flame jets.
As seen from the above technical solution provided by the invention, low-calorific value gas double pre-heating heat accumulation type radiant tube of the present invention, because radiant tube is provided with at least two heat-storage type burners, heat-storage type burner is provided with combustion air inlet and waste gas outlet and low-heat value gas inlet and waste gas outlet, heat-storage type burner can burn by turns, discharge fume, carry out heat storage type combustion, with low-heat value gas is fuel, utilize flue gas that combustion air and low-heat value gas are carried out preheating, and can guarantee that igniting is reliable by start-up burner.Fuel cost is low, heat utilization efficiency is high.
Description of drawings
Fig. 1 is the structural representation of low-calorific value gas double pre-heating heat accumulation type radiant tube of the present invention;
Fig. 2 is the structural representation of start-up burner among the present invention;
Fig. 3 is the structural representation of heat-storage type burner among the present invention.
The specific embodiment
Low-calorific value gas double pre-heating heat accumulation type radiant tube of the present invention, its preferable specific embodiment as shown in Figure 1, radiant tube 6 is provided with at least two heat-storage type burners 3.
As shown in Figure 3, heat-storage type burner 3 is provided with combustion air inlet and waste gas outlet and low-heat value gas inlet and waste gas outlet.Combustion air inlet and waste gas outlet are connected with reversing arrangement 7, are used for that combustion air enters and the switching of air off gas between discharging; Low-heat value gas outlet and waste gas outlet also are connected with reversing arrangement, are used for that low-heat value gas enters and the switching of coal gas waste gas between discharging.
Two burners are a pair of, periodically reversing combustion.In every pair of burner, a burner is in fired state, and the combustion air inlet and the low-heat value gas inlet that are connected with this burner are respectively applied for entering of combustion air and low-heat value gas; Another burner is in the smoke evacuation state, and combustion air inlet that is connected with this burner and low-heat value gas inlet are respectively applied for the discharge of air off gas and coal gas waste gas.Periodically be 30 to 200 seconds commutating period.
Be provided with heat storage 4 in the heat-storage type burner 3, the cross section of heat storage 4 can be circular ring type, semi-circular, square, rectangle or fan-shaped etc.Heat-storage type burner can burn or discharge fume by turns, and heat storage type combustion is carried out in heat storage 4 heat absorptions, heat release, can be fuel with low-heat value gas, and the calorific value of low-heat value gas is 800～2000cal/Nm
3Utilize flue gas that combustion air and low-heat value gas are carried out preheating.The burning cost is low, heat utilization efficiency is high.
Heat-storage type burner 3 is provided with start-up burner 2, as shown in Figure 2, start-up burner 2 is provided with automatic or manual electronic ignition device 1, and is equipped with flame detecting device etc., can guarantee that by start-up burner 2 igniting is reliable, heat-storage type burner 3 is provided with two or more flame jets.
Radiant tube 6 can be equipped with one or more flame protective sleeves 5 for U type, W type or double-P type etc. in radiant tube 6, the material of flame protective sleeve 5 is resistant to elevated temperatures metal material or nonmetallic materials.
The present invention is by integrated with Regenerative Combustion Technology and radiant tube technology, develop a kind of energy-efficient, low radiant tube that pollutes, adopt low-calorie coal gas as the energy, replace relatively costly electric energy or the higher high-quality gas of calorific value of price, cost reduces by 25～100%;
Adopt the reversing combustion technology of the two accumulation of heats of coal gas and combustion air, the surface temperature distribution of radiant tube is more even, and the surface temperature difference of whole radiant tube is little.
Adopt regenerative combustion technology, the physics sensible heat limit in the flue gas is reclaimed, flue-gas temperature is reduced to below 200 ℃, the heat energy of recovery is used for adding heating gas and combustion air, and coal gas and combustion air are preheating to more than 800 ℃, and heat utilization reaches more than 85%.
Adopt the reversing combustion technology, the high-temperature region cycle in the radiant tube changes, and adopts the flame separation sleeve effectively to reduce high temperature dot, make the surface temperature of radiant tube more even, reduce the thermal stress of radiant tube part, effectively the service life of service life of radiant tubes, the surperficial power height of radiant tube heats up rapidly.
CO
2, NO
X, SO
XReduce Deng gas purging, compliance with environmental protection requirements, but wide popularization and application plays economizing on resources, cutting down the consumption of energy and the effect of cost, protection environment in industries such as Ferrous Metallurgy, medicine, tobacco, weaving, food.
The above; only for the preferable specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (10)
1, a kind of low-calorific value gas double pre-heating heat accumulation type radiant tube, it is characterized in that, described radiant tube is provided with at least two heat-storage type burners, described heat-storage type burner is provided with combustion air inlet and waste gas outlet and low-heat value gas inlet and waste gas outlet, described heat-storage type burner is provided with start-up burner, one or more flame separation sleeves have been installed in the described radiant tube, and described heat-storage type burner is provided with two or more flame jets.
2, low-calorific value gas double pre-heating heat accumulation type radiant tube according to claim 1 is characterized in that, described combustion air inlet and waste gas outlet are connected with reversing arrangement, is used for that combustion air enters and the switching of waste gas between discharging;
Outlet of described low-heat value gas and waste gas outlet are connected with reversing arrangement, are used for that low-heat value gas enters and the switching of waste gas between discharging.
3, low-calorific value gas double pre-heating heat accumulation type radiant tube according to claim 1 is characterized in that, per two of described heat-storage type burner is a pair of, periodically reversing combustion.
4, low-calorific value gas double pre-heating heat accumulation type radiant tube according to claim 3, it is characterized in that, in every pair of burner, a burner is in fired state, and combustion air inlet that is connected with this burner and low-heat value gas inlet are respectively applied for and enter combustion air and low-heat value gas.Another burner is in the smoke evacuation state, and combustion air inlet that is connected with this burner and low-heat value gas inlet are respectively applied for discharges corresponding waste gas.
5, low-calorific value gas double pre-heating heat accumulation type radiant tube according to claim 3 is characterized in that, each burner is provided with two or more flame ejiction openings.
According to claim 3 or 4 described low-calorific value gas double pre-heating heat accumulation type radiant tubes, it is characterized in that 6, described periodicity commutating period is 30 to 200 seconds.
7, low-calorific value gas double pre-heating heat accumulation type radiant tube according to claim 1 is characterized in that, described start-up burner is provided with the automatic or manual electronic ignition device and is equipped with flame detecting device.
8, low-calorific value gas double pre-heating heat accumulation type radiant tube according to claim 1 is characterized in that, the calorific value of described low-heat value gas is 800～2000cal/Nm
3
9, low-calorific value gas double pre-heating heat accumulation type radiant tube according to claim 1, it is characterized in that, described heat-storage type burner comprises heat storage, and the cross section of described heat storage is the circular ring type be made up of various heat-storing materials, semi-circular, square, rectangle or fan-shaped.
10, low-calorific value gas double pre-heating heat accumulation type radiant tube according to claim 1, it is characterized in that, described radiant tube is U type, W type or double-P type, one or more flame separation sleeves are installed in the described radiant tube, and the material of described flame separation sleeve is resistant to elevated temperatures metal material or nonmetallic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200910076577XA CN101482266A (en) | 2009-01-09 | 2009-01-09 | Low-calorific value gas double pre-heating heat accumulation type radiant tube |
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|---|---|---|---|
| CNA200910076577XA CN101482266A (en) | 2009-01-09 | 2009-01-09 | Low-calorific value gas double pre-heating heat accumulation type radiant tube |
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| CN101482266A true CN101482266A (en) | 2009-07-15 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252328A (en) * | 2011-07-06 | 2011-11-23 | 重庆赛迪工业炉有限公司 | Radiation tube heater |
| CN102759106A (en) * | 2012-07-31 | 2012-10-31 | 中冶南方(武汉)威仕工业炉有限公司 | Tandem type air gas dual-preheating radiation tube preheating system and air coal gas preheating method |
| CN102759108A (en) * | 2012-07-31 | 2012-10-31 | 中冶南方(武汉)威仕工业炉有限公司 | Parallel type air coal dual-preheating radiation tube preheating system and preheating method |
| CN103453520A (en) * | 2012-06-04 | 2013-12-18 | 大连拓新能源有限公司 | Intelligent temperature control and energy saving combustion furnace |
| CN103673592A (en) * | 2013-12-27 | 2014-03-26 | 中冶长天国际工程有限责任公司 | Method and system for parallel preheating of fuel gas and combustion air for sintering ignition furnace |
| CN104696958A (en) * | 2015-03-02 | 2015-06-10 | 长沙恒威热能科技有限公司 | Pilot flame system of heat accumulation type combustion system and heat accumulation type combustion system and switching method |
| CN104964283A (en) * | 2015-07-07 | 2015-10-07 | 北京神雾环境能源科技集团股份有限公司 | Radiant tube regenerative type combustion system |
| CN106439867A (en) * | 2016-11-21 | 2017-02-22 | 北京神雾环境能源科技集团股份有限公司 | Heat accumulation type catalytic combusting device |
| CN108397770A (en) * | 2018-02-27 | 2018-08-14 | 赵升智 | Middle fuel gas with low heat value heat accumulation type radiant tube gas burner |
| CN111928244A (en) * | 2020-07-30 | 2020-11-13 | 武汉钢铁有限公司 | Heat-storage reversing flameless combustion device |
| CN114992639A (en) * | 2022-07-01 | 2022-09-02 | 北京兴达奇热工控制设备有限公司 | Air-gas heat exchanger for radiant tube |
| CN115200014A (en) * | 2022-07-01 | 2022-10-18 | 北京兴达奇热工控制设备有限公司 | Air-gas double-preheating blast furnace gas radiation pipe combustion system |
-
2009
- 2009-01-09 CN CNA200910076577XA patent/CN101482266A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252328A (en) * | 2011-07-06 | 2011-11-23 | 重庆赛迪工业炉有限公司 | Radiation tube heater |
| CN103453520A (en) * | 2012-06-04 | 2013-12-18 | 大连拓新能源有限公司 | Intelligent temperature control and energy saving combustion furnace |
| CN102759106A (en) * | 2012-07-31 | 2012-10-31 | 中冶南方(武汉)威仕工业炉有限公司 | Tandem type air gas dual-preheating radiation tube preheating system and air coal gas preheating method |
| CN102759108A (en) * | 2012-07-31 | 2012-10-31 | 中冶南方(武汉)威仕工业炉有限公司 | Parallel type air coal dual-preheating radiation tube preheating system and preheating method |
| CN103673592B (en) * | 2013-12-27 | 2015-08-05 | 中冶长天国际工程有限责任公司 | The method and system of the combustion gas of a kind of preheating, sintering, igniting stove in parallel and combustion air |
| CN103673592A (en) * | 2013-12-27 | 2014-03-26 | 中冶长天国际工程有限责任公司 | Method and system for parallel preheating of fuel gas and combustion air for sintering ignition furnace |
| CN104696958A (en) * | 2015-03-02 | 2015-06-10 | 长沙恒威热能科技有限公司 | Pilot flame system of heat accumulation type combustion system and heat accumulation type combustion system and switching method |
| CN104696958B (en) * | 2015-03-02 | 2017-01-11 | 长沙恒威热能科技有限公司 | Pilot flame system of heat accumulation type combustion system and heat accumulation type combustion system and switching method |
| CN104964283A (en) * | 2015-07-07 | 2015-10-07 | 北京神雾环境能源科技集团股份有限公司 | Radiant tube regenerative type combustion system |
| CN106439867A (en) * | 2016-11-21 | 2017-02-22 | 北京神雾环境能源科技集团股份有限公司 | Heat accumulation type catalytic combusting device |
| CN108397770A (en) * | 2018-02-27 | 2018-08-14 | 赵升智 | Middle fuel gas with low heat value heat accumulation type radiant tube gas burner |
| CN111928244A (en) * | 2020-07-30 | 2020-11-13 | 武汉钢铁有限公司 | Heat-storage reversing flameless combustion device |
| CN111928244B (en) * | 2020-07-30 | 2022-07-12 | 武汉钢铁有限公司 | Heat-storage reversing flameless combustion device |
| CN114992639A (en) * | 2022-07-01 | 2022-09-02 | 北京兴达奇热工控制设备有限公司 | Air-gas heat exchanger for radiant tube |
| CN115200014A (en) * | 2022-07-01 | 2022-10-18 | 北京兴达奇热工控制设备有限公司 | Air-gas double-preheating blast furnace gas radiation pipe combustion system |
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Open date: 20090715 |