CN101539298A - Exhaust gas treatment method and incinerator used for steel plate color-coating line - Google Patents
Exhaust gas treatment method and incinerator used for steel plate color-coating line Download PDFInfo
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- CN101539298A CN101539298A CN200910136631A CN200910136631A CN101539298A CN 101539298 A CN101539298 A CN 101539298A CN 200910136631 A CN200910136631 A CN 200910136631A CN 200910136631 A CN200910136631 A CN 200910136631A CN 101539298 A CN101539298 A CN 101539298A
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Abstract
The invention discloses an exhaust gas treatment method and an incinerator used for a steel plate color-coating line. The method comprises the step of: completely burning the exhaust gas which is directly discharged or discharged after traditional secondary burning under the conditions that the temperature is higher than 650 DEG C, the residence time is more than 1 second, and the flow rate is larger than 5 m/s. The incinerator comprises a furnace shell, an exhaust gas channel arranged in the furnace shell, a burner, a porous absorptive heat accumulator and a heat exchanger; a pre-heating chamber, a main burning chamber and a secondary burning chamber are arranged on the exhaust gas channel in sequence; the pre-heating chamber is arranged at the front part of the exhaust gas channel; the main burning chamber and the secondary burning chamber are arranged in the middle of the exhaust gas channel in sequence; the burner is arranged at an inlet of the main burning chamber; the porous absorptive heat accumulator is arranged above the secondary burning chamber; and the heat exchanger is arranged at the rear part of the exhaust gas channel. The invention can further reduce pollution emission, leads the organic solvent and part of incompletely burned exhaust gas to be fully burned, generates non-polluting carbon dioxide and water, and then implements heat exchange with fresh air by the heat exchanger and finally discharge the product.
Description
Technical field
The present invention relates to a kind of waste gas processing method and incinerator that is used for steel plate color-coating line.
Background technology
At present, the toxic emission on the steel plate color-coating line generally has two kinds: the one, and direct discharging can cause the very big pollution of environment and the waste of the energy, and the while heats owing to adopting directly, finished product color coated steel sheet surface meeting residual fraction organic solvent, even carbon is burnt in generation; The 2nd, discharging again can reduce pollution like this after the incinerator burning, still, still has about 3%～5% organic solvent in institute's exhaust gas discharged and contains NO
XFlue gas, cause environmental disruption.
Summary of the invention
The purpose of this invention is to provide a kind of waste gas processing method that is used for steel plate color-coating line and incinerator that can further reduce disposal of pollutants.
A kind of waste gas processing method that is used for steel plate color-coating line of the present invention carries out completing combustion greater than 1 second, flow velocity under greater than the condition of 5 meter per seconds greater than 650 ℃, the time of staying in temperature with direct discharging or through exhaust gas discharged after traditional second-time burning.
A kind of incinerator that is used for the exhaust-gas treatment of steel plate color-coating line of the present invention comprises: the exhaust steam passage that furnace shell, furnace shell are established, burner and gas pipe, porous absorption heat storage and heat exchanger; Circuitous configuration about about exhaust steam passage is, on exhaust steam passage, be provided with preheating chamber successively, main chamber and time combustion chamber, preheating chamber is located at the front portion of exhaust steam passage, main chamber is located at the middle part according to this with time combustion chamber, main chamber and time combustion chamber are side by side and be provided with partition wall, burner and gas pipe are located at the main chamber porch, porous absorption heat storage is located at the top of time combustion chamber, a heat exchanger is arranged on preheating chamber and master, the infall of inferior combustor exit, the tube side of this interchanger and shell side constitute the hot switching path of preheating waste gas and burning back waste gas respectively, other have the tube side of one group of heat exchanger and shell side respectively with the burning of an above-mentioned heat exchanger after the passage of waste gas, the fresh air channel connection, the outlet of described fresh air passage is communicated with drying oven.
Furnace shell is at least 1 layer a refractory brick body of wall, and the furnace shell surface is provided with heat-insulation layer.
Porous absorption heat storage is a honeycomb fashion ceramic fire resistant brick.
The temperature of described main chamber is greater than 650 ℃, and the flow velocity of waste gas is greater than 5 meter per seconds, the length of main chamber should guarantee waste gas within it the time of staying greater than 1 second.
The utility model and the existing incinerator that is used for steel plate color-coating line compare, and have following tangible advantage:
The organic solvent that produces behind the heating steel plate is after the preheating chamber preheating, enter the combustion chamber and contacts fuel gas is directly burnt, burning back waste gas is along exhaust steam passage, doing circuitous up and down the variation advances, prolonged the time of staying of waste gas greatly at combustion furnace, the imperfect combustion waste gas of organic solvent and part is burnt more fully, generate free of contamination carbon dioxide and water, after carrying out heat exchange, over-heat-exchanger and fresh air discharge again again, fresh air through heat exchange is introduced drying oven, steel plate is heated, and the solvent that produces in the heating process enters incinerator again and handles, and reaches recycling.
Incinerator result of use correction data is referring to table 1 before and after transforming:
Table 1
| Project | Ambient influnence | The combustion gas ton steel cost, unit/ton | Dissolvent residual | Remarks |
| Before the transformation | Little scent of | 85 | 5％ | 5% provides reference data according to industry |
| After the transformation | There is not obvious peculiar smell | 80 | 3％ | 3% with reference to the cost calculation gained |
Description of drawings
Fig. 1 is a structure cutaway view of the present invention.
Fig. 2 is the cutaway view of the B1-B1 direction on Fig. 1 edge.
Fig. 3 is the cutaway view of the B2-B2 direction on Fig. 1 edge.
Fig. 4 is the cutaway view of the B3-B3 direction on Fig. 1 edge.
Fig. 5 is the cutaway view of the A-A direction on Fig. 1 edge.
The specific embodiment
The present invention is the waste gas that contains organic solvent that produces behind the heating steel plate, after the preheating through passage and incinerator rear portion and top at the bottom of the burner hearth, enter fire box temperature 600-800 ℃ incinerator, by contact directly burning with combustion gas, combustion air, the flow velocity of processed waste gas in incinerator was controlled at greater than 5 seconds.The length of the burning gallery of described incinerator should guarantee that time that waste gas stops was greater than 1 second within it.
In order to realize above-mentioned control method, the present invention has provided a concrete incinerator embodiment, referring to Fig. 1～Fig. 5.Fig. 1 has illustrated the horizontal sectional structure of incinerator described in the utility model; Fig. 2-Fig. 4 has illustrated respectively along incinerator B1-B1, B2-B2, the horizontal sectional structure of B3-B3 layer; Fig. 5 has illustrated the vertical sectional structure along the A-A direction of exhaust steam passage.
The utility model is provided with furnace shell 8, and furnace shell 8 is the refractory brick body of wall, and furnace shell 8 surfaces are provided with heat-insulation layer 81.Be provided with the support 2 of exhaust steam passage, burner and gas pipe 1, burner and gas pipe in the furnace shell 8, honeycomb ceramic heat accumulator 10, plate type heat exchanger 7.On exhaust steam passage, be provided with preheating chamber 4, main chamber 11 and inferior combustion chamber 12, preheating chamber 4 is located at the front portion of exhaust steam passage, main chamber 11 is located at the middle part according to this with time combustion chamber 12, main chamber 11 and time combustion chamber 12 side by side and be provided with partition wall 13, partition wall 13 is provided with intercommunicating pore 131.Burner and gas pipe 1 are located at main chamber 11 porch, and honeycomb fashion ceramic fire resistant brick 10 is located at the top of main chamber 11 and time combustion chamber 12, and plate type heat exchanger 7,17 is located at the rear portion of exhaust steam passage.On furnace shell 8, be provided with people's peep hole 6.
Circuitous configuration about about exhaust steam passage is, the inlet pipe of organic solvent (not drawing among the figure, from the waste gas of drying oven) are located on the bottom 9 of furnace shell 8 and burner hearth, and are communicated with preheating chamber 4.Organic solvent by plate type heat exchanger 7, then enters burner hearth through preheating chamber 4 preheatings after introducing, and during through main chamber 11 porch, the air that reaches from combustion air inlet 14 with the combustion gas that sprays into from burner and gas pipe 1 contacts and directly burning.Flame after the burning and waste gas are along front furnace 3, carry out second-time burning successively by bottom right-side channels 12, bottom left side passage 11, two layers of left side passage, honeycomb ceramic heat accumulator 10, and at honeycomb ceramic heat accumulator 10 places.Flame after the burning and waste gas is again by two layers of right-side channels, three layers of passage, carries out indirect heat exchange through plate type heat exchanger 7 and waste gas from drying oven in heat exchanger internal vertical direction again.Circuitous up and down advancing (shown in the arrow in Fig. 3 and 4) prolonged the time of staying of waste gas at combustion furnace greatly so, makes the more abundant burning of the imperfect combustion combustion gas of organic solvent and part, generates free of contamination carbon dioxide and water.At last, waste gas is through rear hearth 5, and by plate type heat exchanger 17 and fresh air (fresh air inlet 15) after heat exchanger internal vertical direction is carried out indirect heat exchange, export 16 through smoke stack emission by burnt gas again, fresh air by plate type heat exchanger 17 exchanges then leads to drying oven by fresh air outlet 18, and steel plate is heated.Adopt this indirectly steel plate of heating be heated evenly, the plate face is pollution-free, the solvent that produces in the heating process is extracted out by the drying oven blower fan, and introduces the incinerator utilization of burning again, so recycles, and can obviously reduce exhaust gas discharging and energy savings.
Claims (5)
1, a kind of waste gas processing method that is used for steel plate color-coating line is characterized in that: will directly discharge or carry out completing combustion greater than 1 second, flow velocity under greater than the condition of 5 meter per seconds greater than 650 ℃, the time of staying in temperature through exhaust gas discharged after traditional second-time burning.
2, a kind of incinerator that is used for the exhaust-gas treatment of steel plate color-coating line is characterized in that it comprises: the exhaust steam passage of establishing in furnace shell, the furnace shell, burner and gas pipe, porous absorption heat storage and heat exchanger; Circuitous configuration about about exhaust steam passage is, on exhaust steam passage, be provided with preheating chamber successively, main chamber and time combustion chamber, preheating chamber is located at the front portion of exhaust steam passage, main chamber is located at the middle part according to this with time combustion chamber, main chamber and time combustion chamber are side by side and be provided with partition wall, burner and gas pipe are located at the main chamber porch, porous absorption heat storage is located at the top of time combustion chamber, a heat exchanger is arranged on preheating chamber and master, the infall of inferior combustor exit, the tube side of this interchanger and shell side constitute the hot switching path of preheating waste gas and burning back waste gas respectively, other have the tube side of one group of heat exchanger and shell side respectively with the burning of an above-mentioned heat exchanger after the passage of waste gas, the fresh air channel connection, the outlet of described fresh air passage is communicated with drying oven.
3, a kind of incinerator that is used for the exhaust-gas treatment of steel plate color-coating line as claimed in claim 2 is characterized in that: furnace shell is at least 1 layer a refractory brick body of wall, and the furnace shell surface is provided with heat-insulation layer.
4, a kind of incinerator that is used for the exhaust-gas treatment of steel plate color-coating line as claimed in claim 2 is characterized in that: porous absorption heat storage is a honeycomb fashion ceramic fire resistant brick.
5, a kind of incinerator that is used for the exhaust-gas treatment of steel plate color-coating line as claimed in claim 2, it is characterized in that: the temperature of main chamber is greater than 650 ℃, the flow velocity of waste gas is greater than 5 meter per seconds, the length of main chamber should guarantee waste gas within it the time of staying greater than 1 second.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910136631A CN101539298A (en) | 2009-05-11 | 2009-05-11 | Exhaust gas treatment method and incinerator used for steel plate color-coating line |
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| CN200910136631A CN101539298A (en) | 2009-05-11 | 2009-05-11 | Exhaust gas treatment method and incinerator used for steel plate color-coating line |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832568A (en) * | 2010-05-26 | 2010-09-15 | 浙江华立涂装设备有限公司 | Self-preheating waste gas incinerator |
| CN102777919A (en) * | 2012-08-13 | 2012-11-14 | 无锡多灵环保工程设备有限公司 | Constant-temperature furnace body of garbage combustion furnace |
| CN103712221A (en) * | 2013-12-31 | 2014-04-09 | 中国钢研科技集团有限公司 | Toxic waste gas burning processing technology of color painting production line and processing system thereof |
| CN103968393A (en) * | 2014-06-04 | 2014-08-06 | 江苏兆年涂装科技有限公司 | Rotary type exhaust gas processing device |
| CN106016306A (en) * | 2016-05-24 | 2016-10-12 | 杭州普林派特金属材料有限公司 | Organic solvent color-coating waste gas incinerator system and using method thereof |
| CN109028104A (en) * | 2018-07-17 | 2018-12-18 | 江苏泰瑞耐火有限公司 | The device and method of shuttle-type kiln exhaust gas second-time burning |
| CN112082167A (en) * | 2020-08-12 | 2020-12-15 | 杨满锁 | VOC strong combustion equipment |
-
2009
- 2009-05-11 CN CN200910136631A patent/CN101539298A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832568A (en) * | 2010-05-26 | 2010-09-15 | 浙江华立涂装设备有限公司 | Self-preheating waste gas incinerator |
| CN102777919A (en) * | 2012-08-13 | 2012-11-14 | 无锡多灵环保工程设备有限公司 | Constant-temperature furnace body of garbage combustion furnace |
| CN103712221A (en) * | 2013-12-31 | 2014-04-09 | 中国钢研科技集团有限公司 | Toxic waste gas burning processing technology of color painting production line and processing system thereof |
| CN103712221B (en) * | 2013-12-31 | 2016-07-06 | 中国钢研科技集团有限公司 | Color coating line harmful exhaust incineration treatment technology and the system of process thereof |
| CN103968393A (en) * | 2014-06-04 | 2014-08-06 | 江苏兆年涂装科技有限公司 | Rotary type exhaust gas processing device |
| CN106016306A (en) * | 2016-05-24 | 2016-10-12 | 杭州普林派特金属材料有限公司 | Organic solvent color-coating waste gas incinerator system and using method thereof |
| CN106016306B (en) * | 2016-05-24 | 2018-06-12 | 浙江普林派特涂镀科技有限公司 | Organic solvent prepainted waste gas incinerator system and its application method |
| CN109028104A (en) * | 2018-07-17 | 2018-12-18 | 江苏泰瑞耐火有限公司 | The device and method of shuttle-type kiln exhaust gas second-time burning |
| CN112082167A (en) * | 2020-08-12 | 2020-12-15 | 杨满锁 | VOC strong combustion equipment |
| CN112082167B (en) * | 2020-08-12 | 2023-06-23 | 杨满锁 | VOC powerful combustion equipment |
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Open date: 20090923 |