CN201652331U - Heat-storage type combustion system of high-temperature industrial furnace - Google Patents
Heat-storage type combustion system of high-temperature industrial furnace Download PDFInfo
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- CN201652331U CN201652331U CN2009202654207U CN200920265420U CN201652331U CN 201652331 U CN201652331 U CN 201652331U CN 2009202654207 U CN2009202654207 U CN 2009202654207U CN 200920265420 U CN200920265420 U CN 200920265420U CN 201652331 U CN201652331 U CN 201652331U
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Abstract
The utility model discloses a heat-storage type combustion system of a novel high-temperature industrial furnace, which comprises a heat-storage burner, an air reversing valve, a flue gas reversing valve, a fuel reversing valve, a main fuel supply pipeline and a main fuel pump, a combustion air pipeline and a blower, a flue gas discharge pipeline and a draught fan, a compressed air pipeline and an air compressor, a diesel supply pipeline and a diesel pump, a coal gas supply pipeline and a gas bottle and a heat-storage type combustion automatic control system, wherein the heat-storage burner consists of a coal gas ignition gun, a high-voltage pulse igniter, a small ignition oil gun, a main fuel gun, an air burner nozzle and a heat storage body. The utility model utilizes the paired refractory materials as the heat storage body which is alternately heated by the high-temperature flue gas, then the heat is transferred to the combustion air which can be heated to 1000 DEG C, the flue gas discharge temperature is reduced below 200 DEG C, the flue gas waste heat is recovered to the maximum extent, and the purpose of saving energy by more than 30%, greatly reducing the NOx generation and emission and ensuring the uniform combustion temperature in the furnace is realized.
Description
One, technical field:
The present invention relates to the regenerative combustion system of the high-efficient energy-saving environment friendly that a kind of high temperature industrial furnace uses, be mainly used in industries such as secondary nonferrous metal melting and machinery forging, hot investment casting.
Two, background technology:
High temperature industrial furnace typically refers to fire box temperature at the industrial furnace more than 1000 ℃.The application of traditional combustion technology on high temperature industrial furnace, only require fuel and combustion air are done suitable distribution, get final product fully in the hope of burning, therefore the smog discharge temperature of conventional high-temperature industrial furnace is very high, the heat that flue gas is taken away surpasses 50% of fuel input quantity, and the energy waste phenomenon is serious, and the using energy source thermal efficiency is very low, and the NOx content height in the flue gas, environmental protection pressure is big.Therefore the part industrial furnace is installed air preheater on discharge flue, is used for heating combustion air.But owing to reasons such as material, technology, price, life-spans, usually also can only be with about air preheat to 300 ℃, than traditional industry stove energy-conservation about 15%, still have heat more than 35% with fume emission in atmosphere, exhaust gas temperature generally more than 500 ℃, causes greatly thermal pollution and chemical contamination to surrounding environment.
The combustion technology of New Times then must be taken into account energy-conservation and environmental protection requirement simultaneously, how to improve the thermal efficiency of burner and reduces the discharging of polluting, the emphasis that has become various countries' combustion technology exploitation and used.
HTAC (being called for short HTAC) after nineteen nineties is imported China into, has obtained swift and violent development and perfect.The HTAC technology is a kind of revolutionary brand-new combustion technology that comes into vogue both at home and abroad at present, it utilizes refractory material arranged in pairs to make heat storage, alternately heated by high-temperature flue gas, again with the heat transferred combustion air, combustion air is obtained more than the high temperature preheating to 1000 ℃, smog discharge temperature is reduced to below 150 ℃, reclaims fume afterheat to greatest extent, realizes energy-conservation 30% the above object; By the burning under tissue hypoxia or the oxygen deprivation state, avoided a large amount of generations of high temperature heating power nitrogen oxide NOx generally simultaneously, generated and discharging, made stove internal combustion temperature more become even thereby reduced NOx significantly.Therefore, regenerative combustion technology belongs to the combustion technology of high-efficient energy-saving environment friendly, is fit to very much high temperature industrial furnace and uses.
Carry forward vigorously in contemporary China under the overall situation of energy-conservation and environmental protection, the regenerative combustion system of applying high-efficient energy-saving environment friendly has crucial meaning.
Three, summary of the invention:
In order to remedy and improve the HTAC technology, the object of the present invention is to provide the complete high temperature industrial furnace regenerative combustion system of a cover configuration, comprise heat-storage type burner, air reversing valve, flue gas reversal valve, fuel reversal valve, fuel supply pipe road, combustion air pipeline and air blast, fume emission pipeline and air-introduced machine, cooling air duct and cooling air blower and heat storage type combustion automatic control system.
Described heat-storage type burner is arranged in pairs, both can be oppositely disposed in the industrial furnace both sides face-to-face, also can require to decide on industrial furnace site environment and combustion technology in the adjacent layout in the left and right sides, one side of industrial furnace.It is made up of coal gas ignition rifle, high-voltage pulse igniter, igniting small oil gun, main fuel rifle, air burner shower nozzle, heat storage, heat storage places the bottom of burner, adopt high alumina matter porcelain ball heat storage or ceramic honeycomb heat storage, the heat storage shape can be ball-type or honeycomb type; Coal gas ignition rifle, igniting small oil gun and main fuel rifle are positioned at the top of burner, pass by in the middle of the side, air burner shower nozzle be positioned at main fuel spray nozzle around.
The upper and lower of described heat-storage type burner communicates, lower side has pore, it links to each other with the fume emission pipeline with the combustion air pipeline, combustion air pipeline end is connected to air blast, fume emission pipeline end is connected to air-introduced machine, on the combustion air pipeline air reversing valve is installed, the flue gas reversal valve is installed on the fume emission pipeline, be used to switch the on off operating mode of pipeline; Main fuel rifle rear portion links to each other with the fuel supply pipe road by fuel interface, link to each other with the cooling air duct by the cooling air interface, link to each other with compressed air piping by the compressed air interface, fuel supply pipe road end is connected to oil pump, the air duct end connects air blast, the compressed air piping end is connected to air compressor machine, the effect of air duct provides normal temperature air and is used to cool off the main fuel rifle and damages to prevent fuel nozzle to be in hot environment for a long time, and compressed-air actuated effect is to provide atomizing medium for fuel-oil atmozation; The fuel reversal valve is installed on the main fuel supply line, is used to switch the on off operating mode of fuel channel; The coal gas ignition rifle links to each other with gas piping by the coal gas interface at rear portion, links to each other with the combustion air pipeline by the combustion air interface, and gas valve is housed on the gas piping, and igniter is positioned at coal gas ignition rifle bottom; The igniting small oil gun links to each other with diesel pipeline by the diesel oil interface at rear portion, link to each other with the combustion air pipeline by the combustion air interface, link to each other with compressed air piping by the compressed air interface, the diesel oil valve is housed on the diesel pipeline, diesel oil supply line end is connected to diesel pump.
Air and fuel requirement commutate simultaneously during work, and when a heat-storage type burner was in the heat release duty, its corresponding fuel gun must spray fuel combustion; At this moment, another heat-storage type burner is in the accumulation of heat duty, and its corresponding fuel gun must stop for fuel flame-out.Two independently heat-storage type burner replace commutation work, finish all processes of heat-accumulation combustion, all control actions and valve state are all controlled automatically by the heat storage type combustion automatic control system, do not need manual intervention.
System carries out three grades of igniting flow processs, promptly uses high-voltage pulse igniter point coal gas rifle, uses coal gas rifle diesel pilot rifle, the use diesel-oil gun main fuel rifle that ignites.
Regenerative Combustion System soft hardware equipment of the present invention configuration is complete, can be applied in fully on the high temperature industrial furnace, uses as the combustion system of high-efficient energy-saving environment friendly, remedies and the perfect deficiency of existing HTAC technology.
Four, description of drawings
Accompanying drawing is the utility model systematic schematic diagram.
Among the figure, 1, air blast; 2, air-introduced machine; 3, small blower; 4, main fuel pump; 5, air compressor machine; 6, diesel pump; 7, gas tank; 8, A heat-storage type burner; 9, B heat-storage type burner; 10, A air reversing valve; 11, A flue gas reversal valve; 12, B flue gas reversal valve; 13, B air reversing valve; 14, A heat storage; 15, B heat storage; 16, A main fuel rifle; 17, A igniting small oil gun; 18, A coal gas ignition rifle; 19, B main fuel rifle; 20, B igniting small oil gun; 21, B coal gas ignition rifle; 22, A high-voltage pulse igniter; 23, B high-voltage pulse igniter; 24, A fuel reversal valve; 25, B fuel reversal valve; 26, flue; 27, main fuel rifle combustion air pipeline; 28, igniting small oil gun, coal gas ignition rifle combustion air pipeline and main fuel rifle cooling air duct; 29, main fuel pipeline; 30, compressed air piping; 31, diesel oil supply line; 32, gas supply pipeline; 33, A air burner shower nozzle; 34, B air burner shower nozzle; 35, A diesel oil valve; 36, A gas valve; 37, B gas valve; 38, B diesel oil valve.
Five. the specific embodiment
Below in conjunction with accompanying drawing the utility model is described further:
The normal temperature air that comes out from air blast 1 is switched by B air reversing valve 13, after entering B heat-storage type burner 9, heated by heat storage, at the utmost point after normal temperature air is heated near fire box temperature in the short time, entrainmenting flue gas in the stove on every side forms one oxygen content and is significantly less than 21% thin oxygen deprivation high temperature gas flow, B fuel reversal valve is opened simultaneously, and fuel is injected in the oxygen deprivation high temperature air, and realizes burning under oxygen deprivation (5～15%) state; Meanwhile, hot flue gas after the burner hearth internal combustion is stored in sensible heat in the heat storage 14 of A heat-storage type burner 8 during through A heat-storage type burner 8, then to be lower than 200 ℃ low-temperature flue gas through A flue gas reversal valve 11, discharge atmosphere by air-introduced machine 2, finish a commutation cycle thus. Air reversing valve 10,13 and flue gas reversal valve 11,12 that operating temperature is not high switched with 30～180 seconds commutation cycle, made the heat storage of two heat-storage type burners be in accumulation of heat and heat release alternation state.The conversion that so goes round and begins again by this media of heat storage, absorbs the physics heat of high-temperature flue gas, and discharges and give combustion air, makes that the fume afterheat overwhelming majority of discharging is fully recycled, thereby reaches energy-conservation 30% or more and the purpose of reduction NOx discharge capacity.More than Dong Zuo execution is finished automatically by the heat storage type combustion automatic control system.
System carries out three grades of igniting flow processs in the ignition process, when the A heat-storage type burner is worked, at first opens A gas valve 36, open A high-frequency impulse igniter simultaneously, this moment, the coal gas rifle was lighted, and opened A diesel oil valve 35 after 12 seconds, allowed diesel-oil gun light, close A gas valve 36 simultaneously, close the coal gas rifle, open A main fuel valve 24 and A air reversing valve 10 after 10 seconds, light the main fuel rifle, finish A heat-storage type burner ignition process this moment, and B heat-storage type burner ignition process is so analogized.
The above be better embodiment of the present invention only, but protection scope of the present invention is not limited thereto; anyly be 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 in protection scope of the present invention.
Claims (4)
1. one overlaps the high temperature industrial furnace regenerative combustion system, it is characterized in that: it is by heat-storage type burner, air reversing valve, the flue gas reversal valve, the fuel reversal valve, main fuel supply line and oil pump, combustion air pipeline and air blast, fume emission pipeline and air-introduced machine, compressed air piping and air compressor machine, diesel oil supply line and diesel pump, gas supply pipeline and gas-jar, and the heat storage type combustion automatic control system is formed, described heat-storage type burner comprises the coal gas ignition rifle, the high-voltage pulse igniter, the igniting small oil gun, the main fuel rifle, air burner shower nozzle and heat storage, heat-storage type burner is arranged in pairs, its upper and lower communicates, lower side has pore, it links to each other with the fume emission pipeline with the combustion air pipeline, combustion air pipeline end is connected to air blast, fume emission pipeline end is connected to air-introduced machine, on the combustion air pipeline air reversing valve is installed, the flue gas reversal valve is installed on the fume emission pipeline, the main fuel rifle rear portion of heat-storage type burner links to each other with the fuel supply pipe road by fuel interface, link to each other with the cooling air duct by the cooling air interface, link to each other with compressed air piping by the compressed air interface, fuel supply pipe road end is connected to oil pump, the air duct end connects air blast, the compressed air piping end is connected to air compressor machine, and the fuel reversal valve is installed on the main fuel supply line; The coal gas ignition rifle links to each other with gas piping by the coal gas interface at rear portion, links to each other with the combustion air pipeline by the combustion air interface, and gas valve is housed on the gas piping.
2. high temperature industrial furnace regenerative combustion system according to claim 1 is characterized in that: described heat-storage type burner is oppositely disposed in the industrial furnace both sides face-to-face, or in the adjacent layout in the left and right sides, one side of industrial furnace.
3. high temperature industrial furnace regenerative combustion system according to claim 1, it is characterized in that: described heat storage places the bottom of heat-storage type burner, coal gas ignition rifle, igniting small oil gun and main fuel rifle are positioned at the top of burner, by passing in the middle of the side, air burner shower nozzle be positioned at main fuel spray nozzle around.
4. high temperature industrial furnace regenerative combustion system according to claim 1, it is characterized in that: described air reversing valve and flue gas reversal valve are pneumatic operated valve, fuel reversal valve, gas valve and diesel oil valve are magnetic valve, and its control end all is connected to the output of heat storage type combustion automatic control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202654207U CN201652331U (en) | 2009-12-23 | 2009-12-23 | Heat-storage type combustion system of high-temperature industrial furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009202654207U CN201652331U (en) | 2009-12-23 | 2009-12-23 | Heat-storage type combustion system of high-temperature industrial furnace |
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| CN201652331U true CN201652331U (en) | 2010-11-24 |
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| CN2009202654207U Expired - Fee Related CN201652331U (en) | 2009-12-23 | 2009-12-23 | Heat-storage type combustion system of high-temperature industrial furnace |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373953A (en) * | 2014-11-14 | 2015-02-25 | 北京神雾环境能源科技集团股份有限公司 | Intelligent combustion system comprising restriction orifice plates |
| CN104713123A (en) * | 2015-02-11 | 2015-06-17 | 珠海市威望节能科技有限公司 | Aluminum melting furnace oil-gas-dual-purpose thermal storage classification lean oxygen combustion device |
| CN107101500A (en) * | 2016-02-23 | 2017-08-29 | 宁波汉达节能环保科技有限公司 | A kind of high-efficiency heat-accumulating Non-ferrous metal melting furnace |
| CN110425899A (en) * | 2019-08-28 | 2019-11-08 | 北京泷涛环境科技有限公司 | A kind of low nitrogen combustion apparatus of Regenerative Heating Furnace |
-
2009
- 2009-12-23 CN CN2009202654207U patent/CN201652331U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373953A (en) * | 2014-11-14 | 2015-02-25 | 北京神雾环境能源科技集团股份有限公司 | Intelligent combustion system comprising restriction orifice plates |
| CN104713123A (en) * | 2015-02-11 | 2015-06-17 | 珠海市威望节能科技有限公司 | Aluminum melting furnace oil-gas-dual-purpose thermal storage classification lean oxygen combustion device |
| CN107101500A (en) * | 2016-02-23 | 2017-08-29 | 宁波汉达节能环保科技有限公司 | A kind of high-efficiency heat-accumulating Non-ferrous metal melting furnace |
| CN110425899A (en) * | 2019-08-28 | 2019-11-08 | 北京泷涛环境科技有限公司 | A kind of low nitrogen combustion apparatus of Regenerative Heating Furnace |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20141223 |
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| EXPY | Termination of patent right or utility model |