CN1242839C - Drying room exhaust gas purification and energy recovery system and apparatus - Google PatentsDrying room exhaust gas purification and energy recovery system and apparatus Download PDF
- Publication number
- CN1242839C CN1242839C CN 200310109117 CN200310109117A CN1242839C CN 1242839 C CN1242839 C CN 1242839C CN 200310109117 CN200310109117 CN 200310109117 CN 200310109117 A CN200310109117 A CN 200310109117A CN 1242839 C CN1242839 C CN 1242839C
- Prior art keywords
- exhaust gas
- drying room
- catalyst chamber
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- Expired - Fee Related
The present invention discloses a system and a device thereof for treating exhaust gas of a drying room and recovering and utilizing energy sources. The present invention adopts a circulating system, and integrates heat exchange, heating and catalytic combustion. The present invention comprises the steps that (1) the exhaust gas exhausted from the drying room enters a heat exchanger to exchange heat after collected, and the exhaust gas is preheated; (2) preheated exhaust gas enters a heating chamber to be heated; (3) the heated exhaust gas is pumped into a catalytic chamber to be catalytically combusted after filtered; (4) the combusted purified gas enters the drying room to provide heat, the rest gas enters the heat exchanger to provide heat for the exhaust gas, and the rest gas is exhausted. The heat is circularly utilized in the device. When the exhaust gas is treated, the heating gas for the drying room can be provided. The device has the advantages of compact structure, small space volume, convenient installation and high heat utilization rate.
The present invention relates to the environmental purification treatment system, especially relate to the device that a kind of drying room waste gas purification is handled and energy recovery is utilized.
Organic exhaust gas treatment and purification method commonly used at present has:
1, flame combustion method, be called direct firing method traditionally, the principle that this method adopts the strand of organic property waste gas at high temperature to be broken up easily utilizes thermal source that organic property waste gas is heated to about 760-850 ℃, under this temperature, just can obtain desirable regulation effect.The high-temperature gas that waste gas decomposes the back generation offers heat-needing facility utilization again.The advantage of this method is that one-time investment is economized; Shortcoming is the operation energy consumption height, secondary pollution serious (mainly being a large amount of nitrogen oxide that produce under the condition of high temperature).
2, Production by Catalytic Combustion Process: this method has reduced the temperature of organic exhaust gas strand pyrolysis oxidization reaction under catalyst action, lower than direct firing method ignition temperature, is generally 250-400 ℃.General Production by Catalytic Combustion Process will have more stable high-concentration waste gas, and next is also wanted, and activity is good, the catalyst and the high heat exchanger of heat exchanger effectiveness of good stability, requires height to handling waste gas and equipment, and processing cost is high relatively, and heat energy utilization is difficulty.
The patent No. is that 93222819.4 utility model patent specification discloses a kind of air cleaning unit of handling organic exhaust gas, this device is made up of the adsorbent bed and the catalytic combustor of the cellular activated carbon of filling, organic exhaust gas is by the suction of absorption blower fan, filter through prefilter, advance activated carbon adsorption bed absorption, adsorbent bed has two covers, exchange is adsorbed and desorption, the gas that desorption comes out enters the catalytic combustor burning, the heat energy that produces can't utilize, front and back are adsorbed three typhoon machines such as blower fan, desorption blower fan, air-cooler in addition, and operation energy consumption is big.
For industries such as tin graphed sheet, covering with paint, baking vanish, employed drying room need consume a large amount of energy and be used for heating, produces a large amount of organic exhaust gas in process of production simultaneously, and energy consumption is big, seriously polluted, make production cost improve, at present domestic do not have still preferably that scheme solves this problem.
Summary of the invention
The invention provides the device that a kind of drying room waste gas purification is handled and energy recovery is utilized, this apparatus integration designs, and the purification efficiency height, does not produce secondary pollution, can reclaim a large amount of heat energy again.
Technical scheme of the present invention is:
The device that a kind of drying room waste gas purification is handled and energy recovery is utilized comprises housing and exhaust gas inlet, clean gas outlet, and heat exchanger, heating clamber, blower fan, catalyst chamber, filter are set in the housing; Heat exchanger is communicated with exhaust gas inlet and heating clamber respectively; Be provided with burner in the described heating clamber; The gas discharge outlet of burner is in heating clamber inside, and the gas feed of filter is in heating clamber, and outlet is communicated with catalyst chamber; Blower fan is located between filter and the catalyst chamber; Be provided with catalytic bed in the catalyst chamber, catalyst chamber one end is communicated with heat exchanger, and the other end is communicated with clean gas outlet on the housing.
The front end of described burner is a combustion barrel, and combustion barrel one end is provided with exhaust gas inlet, and the other end is provided with the waste gas outlet of band pressure distribution circle.
System of the present invention adopts recycling mode, catalytic combustion institute calorific requirement when making heat energy at first provide exhaust-gas treatment, the heat that catalytic combustion produces is used to provide drying room institute energy requirement again, unnecessary heat is used for heat exhaust gases simultaneously, recycling in closed system, the catalytic combustion of both having had power consumption is low, the advantage that the exhaust-gas treatment purifying rate is high, possess the ability that heat energy directly utilizes again, energy-saving effect is fairly obvious.
Treating apparatus of the present invention places one with heat exchange, heating, catalytic combustion, and heat is in device inner loop utilization, and compact conformation, spatial volume are less, install easy for installation, heat energy utilization rate height.
According to surveying and determination, utilize system of the present invention and device, reduce 20-25% than former drying room power consumption, the gas of discharging reaches national specified discharge standard.
Description of drawings
The system flow chart that Fig. 1 drying room waste gas purification is handled and energy recovery is utilized;
Fig. 2 waste gas purification is handled and energy recovery use device structural representation.
The specific embodiment
The system that a kind of drying room waste gas purification is handled and energy recovery is utilized, as shown in Figure 1, filled arrows is represented exhaust gas flow direction among the figure, hollow arrow is represented the purified gas direction that flows, form cyclic utilization system, the waste gas that drying room is discharged enters heat exchanger and enters heat exchange and preheat after collecting, and pre-warmed waste gas enters the heating clamber heating, the burner of heating clamber by the portion of setting within it provides heat in the mode of heat exchange, and fraction also can enter burner and participate in burning; Waste gas after the heating is with after waste gas after the burner combustion mixes, and temperature is for reaching 270-370 ℃, and waste gas is extracted by air-introduced machine and enters the catalyst chamber catalytic combustion after filtering; Purge gas temperature after the burning can reach 400-550 ℃, and major part enters drying room heat is provided; Redundance gas enters heat exchanger and discharges after heat is provided for waste gas.
The device that a kind of drying room waste gas purification is handled and energy recovery is utilized comprises housing 1 and exhaust gas inlet 7,
5,10, and clean gas outlet heat exchanger 6, heating clamber 16, blower fan 11, catalyst chamber 9 are set in the housing 1; Heat exchanger 6 is communicated with exhaust gas inlet 7 and heating clamber 16 respectively; Be provided with burner 2 in the described heating clamber 16, the gas after heating clamber 16 heating mixes in heating clamber 16 with the waste gas that burner 2 produces, and filters through filter 13, introduces catalyst chamber 9 by blower fan 11; Be provided with catalytic bed 8 in the catalyst chamber 9, the purified gas that catalyst chamber 9 is come out is partly by clean gas outlet 10 outputs, and part is imported heat exchanger 6 backs by clean gas outlet 5 outputs.
Burner 2: provide the device of emission-control equipment and the main heat energy of drying room, require burner that higher efficiency of combustion is arranged, and enough heat energy is provided, assurance device and drying room reach
technological temperature.Burner 2 front ends are combustion barrel 3, and combustion barrel 3 is the high temperature resistant stainless steel tube, and burner 2 adopts the mode of fuel oil or combustion gas, and the flame of generation is in combustion barrel 3 internal combustion, for guaranteeing 750-800 ℃ of tube Nei Wenduda.For guaranteeing fully to burn and make an interior temperature can be delivered to heating clamber 16, an end of combustion barrel 3 is provided with exhaust gas inlet 4, and flow can be regulated, and the other end is provided with the waste gas outlet 14 of band pressure distribution circle 15, negative pressure in the combustion barrel 3 when guaranteeing to burn.Peripheral space at combustion barrel 3 has large quantity of exhaust gas to pass through, and the cooling combustion drum outer wall prolongs life-span of combustion barrel, has improved the temperature of waste gas simultaneously, makes it to reach more than 300 ℃, satisfies the intensification requirement of catalyst chamber and drying room.
Blower fan 11: adopt the high temperature resistant stainless steel blower fan, mainly be suck that drying room produces contain the oxygen organic exhaust gas in a large number, and make drying room mouth waste gas not excessive, these contain oxygen waste gas and heat up in the combustion chamber and then sends into catalyst chamber by blower fan.
Catalyst chamber 9: catalytic combustion technology is a mature technique comparatively at present.
Catalytic bed 8 is installed in the catalyst chamber, catalytic bed 8 can have various ways such as perpendicular bed or bed, in the bed catalyst is housed, contain oxygen organic exhaust gas malleation and evenly pass through catalytic bed, under catalyst action, organic oxygen-containing waste gas pyrolysis oxidization, and the high-temperature gas after being exothermic reaction and being purified, the high-temperature gas after this part purifies directly uses for drying room.
Heat exchanger 6: be the further energy consumption of saving, use the unnecessary high-temperature gas in back to contain the oxygen organic exhaust gas, to reduce the energy consumption of
burner 2, high-temperature gas after the exchange or emptying or utilization again by heat exchanger heats for drying room.
As exhausted air quantity when big, the pyrolysis oxidization reaction takes place in waste gas in
catalyst chamber 9, emit a large amount of heats, catalyst chamber 9 can be warming up to 400-550 ℃, when catalyst chamber 9 reaches 410 ℃, burner 2 cuts out automatically, this moment, equipment was in fuel oil or the combustion gas state of not consuming, and when catalyst chamber 9 temperature are reduced to below 410 ℃, burner 2 is with little fiery heat supply, when catalyst chamber 9 temperature are reduced to 270 ℃, burner 2 total power heat supplies.Therefore, the exhausted air quantity that need handle is big more or refuse content is high more, and device energy-wasting is few more, otherwise power consumption is big more.
Concrete application example:
Long 33 meters of certain factory No. four line coating drying room, three groups of combustion chambers provide drying room heat energy, per hour consume 165 meters of coal gas 3, toxic emission is 5000-10000 milligram/rice 3, directly exhaust emission is serious.
After system of the present invention and device have been installed, per hour consume 123 meters of coal gas 3, toxic emission is lower than 120 milligrams/meter 3, meet discharging standards.Energy consumption descends 25%, has reached the ideal effect of environment protection treating and has directly reduced cost.
1. a drying room waste gas purification is handled and the device of energy recovery utilization, comprise housing (1) and exhaust gas inlet (7), clean gas outlet (5,10), it is characterized in that: heat exchanger (6), heating clamber (16), blower fan (11), catalyst chamber (9), filter (13) are set in the housing (1); Heat exchanger (6) is communicated with exhaust gas inlet (7) and heating clamber (16) respectively; Be provided with burner (2) in the described heating clamber (16); The gas discharge outlet of burner (2) is in heating clamber (16) inside, and the gas feed of filter (13) is in heating clamber (16), and outlet is communicated with catalyst chamber (9); Blower fan (11) is located between filter (13) and the catalyst chamber (9); Be provided with catalytic bed (8) in the catalyst chamber (9), catalyst chamber (9) one ends are communicated with heat exchanger (6), and the other end is communicated with clean gas outlet (10) on the housing (1).
2. the device that a kind of drying room waste gas purification according to claim 1 is handled and energy recovery is utilized, it is characterized in that: described burner (2) front end is combustion barrel (3), combustion barrel (3) one ends are provided with exhaust gas inlet (4), and the other end is provided with the waste gas outlet (14) of band pressure distribution circle (15).
Priority Applications (1)
|Application Number||Priority Date||Filing Date||Title|
|CN 200310109117 CN1242839C (en)||2003-12-05||2003-12-05||Drying room exhaust gas purification and energy recovery system and apparatus|
Applications Claiming Priority (1)
|Application Number||Priority Date||Filing Date||Title|
|CN 200310109117 CN1242839C (en)||2003-12-05||2003-12-05||Drying room exhaust gas purification and energy recovery system and apparatus|
|Publication Number||Publication Date|
|CN1546211A CN1546211A (en)||2004-11-17|
|CN1242839C true CN1242839C (en)||2006-02-22|
Family Applications (1)
|Application Number||Title||Priority Date||Filing Date|
|CN 200310109117 Expired - Fee Related CN1242839C (en)||2003-12-05||2003-12-05||Drying room exhaust gas purification and energy recovery system and apparatus|
Country Status (1)
|CN (1)||CN1242839C (en)|
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|CN106563343A (en) *||2015-10-10||2017-04-19||余姚市婉珍五金厂||Method for purifying and treating spray paint waste gas|
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|CN106000823A (en) *||2016-06-08||2016-10-12||宜兴市富胜机械有限公司||Metal plate UV roller coating drying system|
|CN105964141B (en) *||2016-07-12||2018-06-26||重庆大学||A kind of processing method and system for spraying VOCs mixed gas|
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- 2003-12-05 CN CN 200310109117 patent/CN1242839C/en not_active Expired - Fee Related
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|C10||Entry into substantive examination|
|SE01||Entry into force of request for substantive examination|
|C14||Grant of patent or utility model|
|C17||Cessation of patent right|
|CF01||Termination of patent right due to non-payment of annual fee||
Granted publication date: 20060222
Termination date: 20101205