CN1508503B - Continuous mesh-belt furnace tail gas and waste gas utilizing method and special apparatus - Google Patents
Continuous mesh-belt furnace tail gas and waste gas utilizing method and special apparatus Download PDFInfo
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- CN1508503B CN1508503B CN 02149673 CN02149673A CN1508503B CN 1508503 B CN1508503 B CN 1508503B CN 02149673 CN02149673 CN 02149673 CN 02149673 A CN02149673 A CN 02149673A CN 1508503 B CN1508503 B CN 1508503B
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- gas
- quenching
- combustion chamber
- exhaust gas
- furnace
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Abstract
The invention refers to a use method of tail gas and exhaust gas of a continuous mesh belt furnace and a special device, which is characterized in that 1) a combustor communicated with a furnace mouth is additionally provided out of the furnace mouth at the tail of the mesh belt furnace, so that the tail in the furnace enters the combustor; the quenched exhaust gas is pumped from a quenching piece dropping passageway and is delivered to the combustor, and air is absorbed during the transportation way; 2) the quenching exhaust gas flow and the absorbed air amount can be adjusted, so that the combustion effect of the mixing gas in the combustion is adjusted; 3) the quenching exhaust gas delivered to the combustor and the tail gas overflowed to the combustor from the furnace mouth are lighted so as to enable the gas to fully combust and then discharged. The invention has the following technical effect: on the one hand, the workpiece entering the furnace can be preheated, the furnace pressure is increased, the consumption of penetrant agent is reduced, thereby reaching the energy-saving purpose; on the other hand, the exhaust gas, effluent and waste heat generated in the quenching process are recovered and used, the pollution of the exhaust gas and effluent to environment is reduced, thereby reaching the environment protection purpose.
Description
Technical field
The present invention relates to a kind of continuous mesh belt type furnace exhaust gas and exhaust gas utilization method and isolated plant, belong to the metal heat treatmet equipment technical field.
Background technology
Grill-hearth travelling oven has two kinds on Muffle pot structure and no Muffle pot structure.During grill-hearth travelling oven work; Be full of protective atmosphere or carburizing atmosphere in the burner hearth, the tail gas of furnace gas overflows from the fire door of meshbeltfurnace afterbody, in tail gas, contains fuel gas such as a large amount of CO, CO2, H2, CH4; In fire door place and air mixed combustion; Its calorific value can't utilize, and because burning is insufficient, the flame tail can emit white cigarette or black smoke to cause environmental pollution.In addition, in the grill-hearth travelling oven quenching process, because the evaporation of quenching medium can produce a large amount of waste gas.If the waste gas that from quenching tank, produces gets in the stove through the whereabouts passage, will make furnace atmosphere unstable, thereby make the difficulty that controls of whole heat treatment process, cause the heat treated article quality unstable.Therefore, must prevent that in the grill-hearth travelling oven quenching process exhaust gas recirculation is in stove.In the prior art, generally adopt the exhausting formula that the waste gas that produces in the quenching process is extracted out the outer burning of stove or directly is thrown into the space, not only caused environmental pollution, but also wasted the energy.
Summary of the invention
The technical issues that need to address of the present invention provide a kind of continuous mesh belt type furnace exhaust gas and exhaust gas utilization method and isolated plant, utilize continuous mesh belt type furnace exhaust gas and quenching waste gas fully again.
Technical problem of the present invention can solve through taking following measure:
Continuous mesh belt type furnace exhaust gas and exhaust gas utilization method are characterized in:
1) outside the fire door of meshbeltfurnace afterbody, add a combustion chamber that is communicated with fire door, the interior tail gas of stove is got in this combustion chamber through fire door burn, and then outwards discharging;
2) passage is extracted quenching waste gas out and it is transported to the combustion chamber of afterbody from quenching part whereabouts, and in carrying the way, absorbs air, lights the quenching waste gas that is transported to the combustion chamber and is spilled over to the tail gas the combustion chamber and it is fully burnt from fire door;
3) the quenching passage is pumped to the air capacity of the quenching exhaust gas flow of combustion chamber and absorption adjustablely from the place ahead, and the ratio of regulating quenching waste gas in the combustion chamber, air, tail gas is to regulate the combustion efficiency of mist in the combustion chamber.
The isolated plant of foregoing continuous mesh belt type furnace exhaust gas and exhaust gas utilization method; Its design feature is: comprise gas-liquid separator, two gas flowmeters, three air valves, gas mixer; The input port of gas-liquid separator connects the Waste gas outlet of quenching passage, gas output end connects gas mixer through one of one of gas flowmeter and air valve input port through pipeline; The liquid output of gas-liquid separator connects the quenching liquid bath through hydraulic valve; Another input port of gas mixer is through two connection air of two and gas flowmeter of air valve, and the output of gas mixer is through the combustion chamber of the tee joint meshbeltfurnace of air valve.
Technical problem of the present invention also can solve through taking following measure:
Three and junction, previous combustion chamber at air valve are provided with automatic ignitor.
Between three and previous combustion chamber of air valve, be provided with suction pump.
Between gas-liquid separator and the quenching passage Waste gas outlet, between the combustion chamber of air valve and meshbeltfurnace, and the connection between each element all connects through pipeline.
The present invention has following outstanding effect:
Characteristics of the present invention are provided with waste gas and recycle passage below grill-hearth travelling oven quenching passage; Make the waste gas that produces in the quenching process successively through gas-liquid separator, flowmeter, gas mixer, gas pumping pump; Get back to the afterbody combustion chamber of grill-hearth travelling oven at last, and fully burning in this combustion chamber, following technique effect produced: fully burn in the afterbody combustion chamber through tail gas and quenching waste gas and realize utilization again to the energy; The workpiece of stove is advanced in the possibility preheating on the one hand; Increase furnace pressure, reduce the consumption of the energy and solvent, reach purpose of energy saving.With the tail gas that produces in the quenching process and quenching waste gas, waste liquid, Waste Heat Recovery utilization, reduce pollution on the other hand, reach the purpose of protection environment environment.
Description of drawings
Fig. 1 is a kind of structural representation of isolated plant wherein.
The specific embodiment
Can know from Fig. 1; Purpose for tail gas and the quenching waste gas of realizing making full use of grill-hearth travelling oven; The method that adopts is: a combustion chamber 11 is set outside the afterbody doorway of meshbeltfurnace; The guipure burner hearth is communicated with combustion chamber 11 through former fire door; Between the waste gas outlet 13 of afterbody combustion chamber 11 and quenching passage, isolated plant is set, said isolated plant is formed by connecting gas-liquid separator 2, hydraulic valve 3, gas flowmeter 4, air valve 5, gas flowmeter 7, air valve 6, gas mixer 8 and air valve 10, automatic ignitor 12 and suction pump 9.
The input port of gas-liquid separator 2 connects the Waste gas outlet 13 of quenching passage, gas output end connects gas mixer 8 through gas flowmeter 4 and air valve 5 input port through pipeline 1; Be used for gas and fluid separation applications with waste gas, with pure gas be transported to gas mixer 8, liquid is transported to the quenching liquid bath through hydraulic valve 3.
Gas mixer 3 is provided with air intake; The air intake place is provided with air valve 6 and gas flowmeter 7; Air valve 6 is regulated the air capacity that gets into gas mixer 8, and air valve 5 is regulated the exhausted air quantity that gets into gas mixer, therefore through regulating air valve 5, air valve 6; Can the adjustments of gas blender air content of gas of 8 outputs, use mist sufficient combustion in afterbody combustion chamber 11.
The suction pump 9 main flow velocitys that extract the waste gas of quenching passage, the flow velocity of accelerating waste gas and control mist.
Air valve 10 is mainly used in the flow that control gets into the mist of combustion chamber 11, and the furnace gas that makes mist and spill into cup in the body of heater of meshbeltfurnace is fully burned.
Automatic ignitor 12 is mainly used in the usefulness extraction is used for injecting flames into cup through gas nozzle, and furnace gas and the waste gas lighted in the cup fully burn it.
Operation principle of the present invention is following:
The waste gas of from the quenching passage, discharging separates into waste gas and waste liquid through behind the gas-liquid separator 2; Waste gas gets in the gas mixer 8 through gas flowmeter 4, air valve 5; Waste liquid regularly is back in the quenching tank through hydraulic valve 3; Air gets in the gas mixer 8 through gas flowmeter 7, air valve 6, and air and waste gas form mist in gas mixer 8, and said mist passes through the combustion chamber 11 of air valve 10 entering meshbeltfurnaces by automatic ignitor 12 ignition; The flow of air valve 5 control waste gas, the flow of air valve 6 control airs, gas flowmeter 4, gas flowmeter 7 measure the flow of waste gas and the flow of air respectively.
Claims (4)
1. continuous mesh belt type furnace exhaust gas and exhaust gas utilization method is characterized in that:
1) outside the fire door of meshbeltfurnace afterbody, add a combustion chamber that is communicated with fire door, the interior tail gas of stove is got in this combustion chamber through fire door burn, and then outwards discharging;
2) passage is extracted quenching waste gas out and it is transported to the combustion chamber of afterbody from quenching part whereabouts, and in carrying the way, absorbs air, lights the quenching waste gas that is transported to the combustion chamber and is spilled over to the tail gas the combustion chamber and it is fully burnt from fire door;
3) the quenching passage is pumped to the air capacity of the quenching exhaust gas flow of combustion chamber and absorption adjustablely from the place ahead, and the ratio of regulating quenching waste gas in the combustion chamber, air, tail gas is to regulate the combustion efficiency of mist in the combustion chamber.
2. the isolated plant of continuous mesh belt type furnace exhaust gas as claimed in claim 1 and exhaust gas utilization method is characterized in that: comprise gas-liquid separator (2), two gas flowmeters (4,7), three air valves (5,6,10) and gas mixer (8); The input port of gas-liquid separator (2) connects the Waste gas outlet of quenching passage, gas output end connects gas mixer (8) through one of one of gas flowmeter and air valve input port through pipeline (1); The liquid output of gas-liquid separator (2) connects the quenching liquid bath through hydraulic valve (3); Another input port of gas mixer (8) through air valve two, gas flowmeter two be communicated with atmosphere, the output of gas mixer (8) is through the combustion chamber (11) of the tee joint meshbeltfurnace of air valve.
3. isolated plant as claimed in claim 2 is characterized in that: be provided with automatic ignitor (12) at three of air valve with the junction of combustion chamber (11).
4. isolated plant as claimed in claim 2 is characterized in that: between three and the gas mixer (8) of air valve, be provided with suction pump (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02149673 CN1508503B (en) | 2002-12-19 | 2002-12-19 | Continuous mesh-belt furnace tail gas and waste gas utilizing method and special apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02149673 CN1508503B (en) | 2002-12-19 | 2002-12-19 | Continuous mesh-belt furnace tail gas and waste gas utilizing method and special apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1508503A CN1508503A (en) | 2004-06-30 |
| CN1508503B true CN1508503B (en) | 2012-06-06 |
Family
ID=34233745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02149673 Expired - Lifetime CN1508503B (en) | 2002-12-19 | 2002-12-19 | Continuous mesh-belt furnace tail gas and waste gas utilizing method and special apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1508503B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100419096C (en) * | 2006-05-08 | 2008-09-17 | 杭州金舟电炉有限公司 | Netted belt furnace for heating roller with both oil and electricity |
| CN101881561B (en) * | 2010-07-12 | 2012-07-04 | 宏茂五金(昆山)有限公司 | Combustion heat energy recycling system of quenching furnace tail gas |
| JP5554259B2 (en) * | 2011-02-09 | 2014-07-23 | 中外炉工業株式会社 | Recuperator |
| CN107326165A (en) * | 2017-08-15 | 2017-11-07 | 中山市智辉科技服务有限公司 | A gear quencher with a water spray device |
-
2002
- 2002-12-19 CN CN 02149673 patent/CN1508503B/en not_active Expired - Lifetime
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| Publication number | Publication date |
|---|---|
| CN1508503A (en) | 2004-06-30 |
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Granted publication date: 20120606 |
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