CN101504145B - Waste gas incineration recuperative furnace - Google Patents
Waste gas incineration recuperative furnace Download PDFInfo
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- CN101504145B CN101504145B CN 200910080726 CN200910080726A CN101504145B CN 101504145 B CN101504145 B CN 101504145B CN 200910080726 CN200910080726 CN 200910080726 CN 200910080726 A CN200910080726 A CN 200910080726A CN 101504145 B CN101504145 B CN 101504145B
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Abstract
The invention provides a waste gas incineration recuperative furnace, which aims to solve the problems of short incineration cracking time, incomplete cracking, easy burnout and difficult maintenance of a recuperator in the incinerator, and the like existing in the prior waste gas incinerator. The proposal comprises that a structure that the recuperator is arranged outside the incinerator and communicated by a diameter changing air pipe is adopted, and the wall of a furnace body on the back part of an air distribution plate is wave-shaped, so that the thermal expansion of the furnace body is avoided; a bottom frame is provided with rollers, on which the incinerator body can be freely flexed; due to the adoption of the structure, the burnout of the recuperator due to high-temperature flamewhen the waste gas is burnt is avoided, and the expansion of the furnace body caused by the thermal expansion of the furnace body can also be eliminated; moreover, the furnace has the advantages of simple structure and easy processing and assembly.
Description
Technical field
The invention belongs to technical field of environmental protection facilities, relate to a kind of incineration recuperative furnace, especially a kind of waste gas incineration recuperative furnace.
Background technology
The general heating, drying mode that adopts behind the Bus in Color Coat Production Line coating liquid paint vehicle, make the solvent heating evaporation by the heat in the curing oven, and band is heated to predetermined temperature, with solidified coating, the energy that this process need consumption is a large amount of, present domestic Bus in Color Coat Production Line generally is waste gas in the stove to be extracted and is heated to out waste gas cracking point temperature (733 ℃) to carry out the cracking burning for environment protection standard, cracking is burned in the cleaved burning of the most solvents that contain toxic gas in the waste gas, discharge a large amount of heat energy, consume the most of oxygen in the waste gas simultaneously, the high temperature inert that produces (reduce to about 5-8% by control excess oxygen content, relative inertness) flue gas, form the high-temperature low-oxygen flue gas, by the heat exchanger heat exhaust gases, send into curing oven with the waste gas after this being heated by air blast, the steel band after the japanning is cured oven dry, energy savings.For example the applying date is that the patent No. of 2009.3.3 is 200910078772.6 color-coating line paint curing oven security heating method, a most important link is to burn heat exchange in this scheme, for example the applying date is that the patent No. of 2008.1.7 is 200420024060.9 waste gas combustion furnace to traditional incinerator, the design feature heat exchanger of this waste gas combustion furnace is in the body of heater of incinerator, the general body of heater of this structure is shorter, the flame of burnt gas burns out the heat exchanger at rear portion easily, cause and organic exhaust gas enters in the housing from exhaust gas inlet, earlier around tubulation and outer wall of combustion chamber and high-temperature combustion gas wherein carry out heat exchange, the edge up burning-point of to the organic exhaust gas solvent of temperature, circuitous again to the combustion chamber import, and after mixing, combustion gas or fuel oil enter combustion chambers burn, cracking.According to burning the cracking theory, organic exhaust gas all is being cracked into free of contamination carbon dioxide molecule and hydrone after 1 second under 700～750 ℃ of hot environments, but it is thorough that the waste gas combustion furnace of said structure is difficult to burn cracking in practice, fully cracking, cause the waste gas can not qualified discharge, and the waste gas after the cracking directly enters curing oven after heat exchange, and cracking is insufficient, can directly influence the surface of steel plate coating quality.In the applying date 2008.1.4 patent No. is in the burned waste gas hot-blast stove of 200820064011.X, exhaust gas heat exchanger and fresh wind heat exchanger are all in body of heater, complex structure, the body of heater burning zone is short to be burnt out heat exchanger easily, and the burning cracking time is shorter, cracking is insufficient, and the exhaust emissions environmental protection behind the burned waste gas is not up to standard, easy-maintaining not after the damage.
Summary of the invention
Burn cracking time weak point in order to overcome original waste gas combustion furnace, cracking is insufficient, and heat exchanger is burnt out in incinerator easily, characteristics such as easy-maintaining not, adopted heat exchanger outside incinerator, rely on the structure of reducing airduct UNICOM, and the furnace body wall at the homogenating plate rear portion has been wavy, underframe has roller, this structure, thermal-flame burns out heat exchanger in the time of can avoiding burned waste gas, and can eliminate the body of heater elongation that the body of heater thermal expansion causes.
The technical scheme that the present invention solves its technical problem is: a kind of waste gas incineration recuperative furnace, it is characterized in that by incinerator 1, exhaust gas heat exchanger, waste gas send into incinerator pipeline 2, waste gas is sent into heat exchange manifold 7, oxygen analysis instrument 6 and circulating fan 8 constitutes.Be that exhaust gas heat exchanger is positioned at outside the incinerator body of heater.Be content, by the air inflow of electrical appliance part interlock control incinerator by oxygen after the 6 mensuration burning cracking of the oxygen analysis instrument behind the exhaust gas heat exchanger.Incinerator is made up of body of heater 10, combustor 17, combustion barrel 12, saddle 14, heat-insulation layer 15, thermal resistance 20, underframe 13.A kind of body of heater of waste gas incineration recuperative furnace is characterized in that the curing oven body of heater had increased 4-6 rice than former body of heater length, has increased the burning cracking time, the burning cracking can fully be carried out, and combustion barrel is fixed on the body of heater by dividing equally plate.It is wavy that this incinerator is that also body of heater is pressed in the later part of homogenating plate, strengthened the intensity of cylindrical shell, and can also eliminate the body of heater elongation that the body of heater expanded by heating brings.The saddle of the body of heater bottom of this waste gas incineration recuperative furnace, one of them and body of heater are fixed, and all the other are supported on the base, are that incinerator supports and can eliminate the body of heater elongation that the body of heater expanded by heating brings by being fixed on roller on the ground.
The invention has the beneficial effects as follows:
1. thereby the technical program has adopted systemic circulation blower fan 8 to make the incinerator internal pressure bigger, can make that the rich solvent waste gas of extracting out from curing oven after exhaust gas heat exchanger heating can burn smoothly, cracking, tail gas after the burning cracking passes through exhaust gas heat exchanger and fresh air heat exchanger smoothly, is transported in the curing oven with other need the place of heat energy in the production line.
2. homogenating plate 18 is welded on the body of heater, and sky is enclosed within on the combustion barrel 12, is heated and can freely extends when the temperature of burning tube is too high when helping burned waste gas.Be provided with homogenating plate 18 and high-temp waste gas entered run into combustion barrel behind the combustion chamber of incinerator and can prevent the dead angle phenomenon smoothly evenly by homogenating plate after turning back, can make waste gas burning abundant.
3. heat exchanger places outside the body of heater, connects body of heater length lengthening by the reducing airduct, waste gas is burning the residing time in furnace long enough like this, burns cracking and can fully finish, and helps environmental protection, and thermal-flame can not burn heat exchanger, avoided the heat exchanger of original incinerator version to damage.
4. corrugated form is adopted at the body of heater rear portion, helps improving body of heater intensity under the situation of equal wall thickness, and can eliminate the portion of hot expansion of body of heater.
5. the saddle 14 of body of heater bottom is welded on the base 13, one of them and body of heater are fixed, all the other are supported on the whole body of heater in body of heater bottom and are supported by the roller 19 that is fixed on the ground, heat exchanger is fixed on the ground, such design is because the burned waste gas cracking is at high temperature to carry out and can discharge a large amount of heat, on saddle, slide when helping body of heater and being heated, and whole incinerator slides along the roller that is fixed on the ground.
6. the oxygen analysis instrument behind the exhaust gas heat exchanger 6 is measured the content that burns oxygen after the cracking, interlock control combustor is mended the air inflow into fresh air, because of the temperature of air far below the temperature of burning cracking, so the energy tolerance that combustor consumes reduces energy savings consumption.
Description of drawings
Fig. 1: waste gas incineration recuperative furnace front view
Fig. 2: incinerator front view
Fig. 3: incinerator removes the combustor left view
Fig. 4: homogenating plate structure chart
Among Fig. 1: 1. incinerator, 2. waste gas send into the incinerator pipeline, 3. the reducing airduct, 4. waste gas heat heat exchanger exit end, 5. waste gas heat heat exchanger entrance end, 6. the oxygen analysis instrument, 7. waste gas is sent into heat exchange manifold, 8. circulating fan, 9. exhaust gas entrance
Among Fig. 2 and Fig. 3: 10. body of heater, 11. supports, 12. combustion barrels, 13. underframe, 14. saddles, 15. heat-insulation layers, 16. stay pipes, 17. combustors, 18. homogenating plates, 19. rollers, 20. thermal resistances
Fig. 4: 21. outer rings, 22. orifice plates, 23. centre circles, 24. diffuser plates, 25. inner rings
The specific embodiment:
Waste gas incineration recuperative furnace mainly is made of incinerator 1 and exhaust gas heat exchanger in accompanying drawing 1, middle reducing airduct 3 UNICOMs that rely on, rich solvent waste gas relies on the power of circulating fan 8 to send into heat exchange manifold 7 by waste gas from exhaust gas entrance 9 ends and enters exhaust gas heat exchanger, send into incinerator pipeline 2 by waste gas and send into incinerator 1 after heat exchange.
At accompanying drawing 2, accompanying drawing 3, incinerator 1 front end of waste gas incineration recuperative furnace has combustor 17, air, fuel after combustor is lighted in combustion barrel 12 internal combustion, rich solvent waste gas after heat exchange enters incinerator through exhaust gas entrance, high pressure exhaust gas bumps against the back diffuser plate 24 by homogenating plate of combustion barrel 12 reflections and enters body of heater, some enters body of heater by orifice plate 22, put in cracking with the flame of combustion barrel 12 that the solvent in the waste gas is burned cracking under the above hot conditions, discharge a large amount of heat energy, generate carbon dioxide and water, consume airborne oxygen simultaneously, this part gas is transported to the heat exchanger at rear portion by high pressure draught.The body of heater of incinerator supports combustion barrels 12 by support 11 and the homogenating plate 18 that is welded on the body of heater, and homogenating plate 18 has outer ring 21 in accompanying drawing 4, and abacus 22 and diffuser plate 24 are formed between centre circle 23, the inner ring 25; Combustor 17 is communicated with combustion barrel at the front end of body of heater, heat-insulation layer 15 is arranged in the body of heater centre, the rear portion is made into corrugated, not only increased intensity, and helped eliminating the body of heater elongation that the body of heater expanded by heating causes, body of heater length has increased 4-6 rice than the body of heater length of using in the present industry, prolonged the burning cracking time, improved the burning lysis efficiency, made it abundant burning, exhaust emissions can be up to standard after the burning cracking.In accompanying drawing 3, stay pipe welds together with underframe with saddle and is connected, and top is connected with body of heater, wherein has a saddle place to be and the body of heater welding, and all the other are supported on the body of heater place by stay pipe, help body of heater expanded by heating at high temperature, and body of heater extends along stay pipe.Roller 19 is in the roller box, be fixed together with ground, burning body of heater is placed on it, when burning the body of heater expanded by heating, on roller, can be free to slide, be not subjected to the constraint of axial direction, the body of heater rear end is communicated with exhaust gas heat exchanger through reducing airduct 3, exhaust gas heat exchanger and ground are fixed, in heat exchanging pipe is arranged, be used to heat the rich solvent waste gas that comes from curing oven, reduced waste gas and arrive to have burned the required heat of cracking point, measured by oxygen analysis instrument 6 behind exhaust gas heat exchanger and burn after the cracking content of oxygen in the tail gas, the oxygen analysis instrument 6 behind the interlock control exhaust gas heat exchanger is measured the content of oxygen after the burning cracking, interlock control combustor is mended the air inflow into fresh air, because of the temperature of air far below the temperature of burning cracking, so the energy tolerance that combustor consumes reduces, reduced the required combustion gas of combustor, energy savings consumes, and has saved expense.
Claims (2)
1. waste gas incineration recuperative furnace, by incinerator (1), exhaust gas heat exchanger, waste gas is sent into the pipeline (2) of incinerator, waste gas is sent into the pipeline (7) of heat exchanger, oxygen analysis instrument (6) and circulating fan (8) constitute, exhaust gas heat exchanger is positioned at outside the incinerator body of heater, content by oxygen after the mensuration of the oxygen analysis instrument (6) behind the exhaust gas heat exchanger burning cracking, the air inflow of interlock control incinerator, incinerator is by body of heater (10), combustor (17), combustion barrel (12), saddle (14), heat-insulation layer (15), thermal resistance (20), underframe (13) is formed, the combustion barrel of described incinerator (12) is fixed on the body of heater by homogenating plate (18), it is characterized in that body of heater is pressed into wavy in the later part of homogenating plate (18), the saddle of body of heater bottom (14) is welded on the underframe (13), one of them and body of heater are fixed, all the other are supported on the body of heater bottom, and described incinerator is supported by the roller (19) that is fixed on the ground.
2. a kind of waste gas incineration recuperative furnace as claimed in claim 1 is characterized in that the homogenating plate (18) on the incinerator is made of outer ring (21), orifice plate (22), centre circle (23), diffuser plate (24), inner ring (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910080726 CN101504145B (en) | 2009-03-27 | 2009-03-27 | Waste gas incineration recuperative furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910080726 CN101504145B (en) | 2009-03-27 | 2009-03-27 | Waste gas incineration recuperative furnace |
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| CN101504145A CN101504145A (en) | 2009-08-12 |
| CN101504145B true CN101504145B (en) | 2011-08-10 |
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| CN 200910080726 Active CN101504145B (en) | 2009-03-27 | 2009-03-27 | Waste gas incineration recuperative furnace |
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| CN102865584B (en) * | 2011-07-07 | 2016-03-30 | 深圳市华懋环保节能设备有限公司 | Seriation L-type non-phase transformation super heat-conductive pipe heat reclamation type VOCs incinerator |
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