CN2779256Y - Self-heated catalytic combustion reactor - Google Patents
Self-heated catalytic combustion reactor Download PDFInfo
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- CN2779256Y CN2779256Y CN 200420120402 CN200420120402U CN2779256Y CN 2779256 Y CN2779256 Y CN 2779256Y CN 200420120402 CN200420120402 CN 200420120402 CN 200420120402 U CN200420120402 U CN 200420120402U CN 2779256 Y CN2779256 Y CN 2779256Y
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- catalytic combustion
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Abstract
The utility model relates to a purifier for low concentration volatile organic waste gas, namely a self-heating type catalytic combustion reactor. The utility model is mainly composed of a U-shaped barrel body, fillers, catalyst, a heating tape, heat-insulating materials, an automatic control valve and a control system, wherein the fillers and the catalyst are in the U-shaped barrel body, and the heating tape and the heat-insulating materials are outside the U-shaped barrel body. The automatic control valve is respectively connected with a gas inlet pipe and a gas outlet pipe, combustible matter in waste gas is catalyzed and oxidized under the action of the catalyst. Heat storage materials with high heat capacity is adopted to absorb generated heat, the heat recovery efficiency is high, and the removal rate of the combustible matter can reach more than 95 percent; even if the concentration of the combustible matter is decreased to 0.6g/m< 3 >, the self-heating oxidation can still be realized. The energy consumption is effectively decreased, and the utility model is particularly suitable for the purification treatment of low-concentration organic waste gas.
Description
Affiliated technical field
The utility model relates to a kind of purified treatment reactor that contains low concentration volatile organic matter waste gas, can be applied in midget plant that volatile organic matters such as solvent may overflow, workshop and other contains the place of escaping gas.
Background technology
Along with the enhancing of people's environmental consciousness and the increasingly stringent of national environmental protection laws and regulations requirement, the purified treatment that contains low concentration volatile organic matter waste gas has been caused people's attention.General at present incinerator, heat accumulation type thermal oxidation reactor and the conventional catalyst combustion reactor etc. of adopting.Have the fuel cost height of the incinerator of heat exchanger, the heat loss amount is bigger, and at high temperature easily forms NO
xCause secondary pollution, when volatile organic matter concentration is low, be difficult to realize the self-heating operation; Heat accumulation type thermal oxidation reactor is made of energy storage bed and combustion chamber, and heat utilization ratio is higher, but the temperature height of combustion chamber easily produces NO
xForm secondary pollution with CO; The operating temperature of conventional catalyst combustion reactor is low, secondary pollution NO
xWith the amount of CO seldom, VOC
sClearance higher, but an interstation wall type heat exchanger need be set usually, and heat recovery efficiency is not high, the VOCs concentration limit of self-heating operation requires greater than 5～10g/m
3, when handling low concentration gas, need extraneous a large amount of heat that provides.
Summary of the invention
The purpose of this utility model has provided a kind of heat recovery efficiency height, energy consumption is little, waste gas self-heating concentration is low and its clearance up to more than 95% and can realize the automatically self-heating catalytic combustion reactor of operation.
The purpose of this utility model is achieved in that
A kind of self-heating catalytic combustion reactor comprises reactor body, autocontrol valve and control system.Wherein: reactor body is by U type tube body and be seated in the inert filler of its internal upper part and catalyst, external heated band and the insulation material of bottom formed; In catalyst filling section thermocouple is installed, and is provided with the control system that control heating tape power supply opens and closes, open and close power supply according to the temperature of thermocouple; Autocontrol valve links to each other with escape pipe with air inlet pipe respectively, valve open and close and the cycle of reactant flow-reversal is controlled by the time relay.
Description of drawings
Accompanying drawing is the structural representation of utility model embodiment.
The specific embodiment
Referring to accompanying drawing, self-heating catalytic combustion reactor main body is by U type tube body 5 and is seated in the inert filler 6a of its internal upper part and the catalyst 9 of 6b, bottom that external heated band 8 and insulation material 7 are formed; In catalyst filling section 9 thermocouple 10 is installed, feeds back the power supply that opens and closes the heating tape according to the temperature that thermocouple records; Automatically control triple valve 3,12 links to each other with escape pipe with air inlet pipe respectively, valve open and close and the cycle of flow-reversal is controlled by the time relay 11.
What accumulation of heat filler 6a that utility model is loaded and 6b selected for use is the inert ceramic balls or the monoblock type filler of high heat capacity.Its characteristics be Heat stability is good, high temperature resistant, amount of stored heat is big, the heat recovery rate height is even combustible concentration is low to moderate 0.6g/m
3And can not realize the self-heating operation under the condition of additional heat yet.Catalyst 9 is supported precious metal catalyst or metal oxide catalyst.The heat tape 8 that pre-thermal recovery when bed goes into operation twines outside cylindrical shell 5.The heat tape power supply open and close the temperature FEEDBACK CONTROL that records by the thermocouple that inserts beds 9.Insulation material 7 is aluminosilicate refractory fiber plates.The gas flow conversion is controlled automatically by two electric T- shaped valves 3,12, and 3,12 are located at air inlet and gas outlet respectively, also can select a cross valve for use.Open and close and the adjusting in cycle of valve 3,12 are preset and are controlled by the time relay 11.
In the reaction incipient stage, need pre-thermal regenerator filler 6a, 6b and catalyst 9, make bed temperature reach the active temperature of catalyst 9, when bed temperature reaches the temperature of setting, through thermocouple 10 FEEDBACK CONTROL, automatically cut off the heating tape power supply, the waste gas that can open the volatilized organic matter pollution of air blast 1 feeding this moment carries out catalytic combustion and purifies.Behind spark arrester 2, under the control of autocontrol valve 3,12, the commutation cycle of setting by time relay 11 alternately enters accumulation of heat filler 6a and 6b from 4a shown in the accompanying drawing, 4b and arranged on left and right sides flange-interface near the waste gas of room temperature.For example, after gas enters from valve 3, at first through accumulation of heat filler 6a by heat temperature raising gradually, near catalyst 9 time, reach the activity of such catalysts temperature, volatile organic matter is by catalytic combustion, and the high-temp waste gas of purification is also put aside the heat transferred filler therein through accumulation of heat filler 6b, gas is lowered the temperature gradually, enters blast pipe through valve 12.Volatile organic matter catalytic oxidation conversion ratio is up to more than 95%, and the temperature difference of import and export gas is below 50 ℃.After the half period that reaches the time relay 11 settings, control valve 3,12 opens and closes switching, and the flow direction of reactant changes, and waste gas enters catalyst section 9 reactions through accumulation of heat filler 6b, and the gas of purification enters blast pipe through valve 12 after accumulation of heat filler 6a cooling.Because the whole system heat recovery rate is high, even the VOCs concentration in the waste gas is low to moderate 0.6g/m
3, still can be efficiently, the self-heating operation.When VOCs concentration is low excessively, reaction can not self-heating during operation, and control system can be opened the power supply of heating tape automatically, replenishes a spot of heat and reacts fully and carry out, and makes the conversion ratio of combustible maintain higher level all the time.The maximum temperature of catalyst section 9 generally about 400～600 ℃, the NO in the gas of this moment of discharge through burning after
xSeldom, can avoid secondary pollution.
Embodiment 1:
By the utility model reactor, adopt the commercial load noble metal catalyst, in benzene, toluene and dimethylbenzene three volume ratio are 1: 1: 1 the simulated exhaust of mixture and air composition, as concentration 0.654g/m
3, commutation cycle 20min and air speed be 9600h
-1The time, the conversion ratio of benzene, toluene and dimethylbenzene is all more than 96%, and reaction system can be kept the self-heating operation.
Embodiment 2:
By the utility model reactor, adopt the commercial load noble metal catalyst, in benzene, toluene and dimethylbenzene three with volume ratio are 1: 1: 1 the simulated exhaust of mixture and air composition, when concentration is 3.0g/m
3, commutation cycle 50min and air speed be 9600h
-1The time, the conversion ratio of benzene, toluene and dimethylbenzene is all more than 96%, and catalyst temperature runaway not.
Claims (5)
1, a kind of self-heating catalytic combustion reactor, comprise reactor body, autocontrol valve and control system, it is characterized in that: reactor body is by U type tube body and be seated in the catalyst of inert filler, the bottom of its internal upper part, outside heat tape and insulation material formed; In catalyst filling section thermocouple is installed, and is provided with the control system that control heating tape power supply opens and closes; Autocontrol valve links to each other with escape pipe with air inlet pipe respectively, and the cycle of the keying of valve and reactant flow-reversal is by time relay control and adjusting.
2, self-heating catalytic combustion reactor as claimed in claim 1, what the accumulation of heat filler that it is characterized in that being loaded was selected for use is the inert ceramic balls or the monoblock type inert filler of high heat capacity.
3, self-heating catalytic combustion reactor as claimed in claim 1 is characterized in that described catalyst is supported precious metal catalyst or metal oxide catalyst.
4, self-heating catalytic combustion reactor as claimed in claim 1 is characterized in that used heat tape, also can adopt the combustion gas that is arranged on the air inlet pipeline to burn and chew.
5, self-heating catalytic combustion reactor as claimed in claim 1 is characterized in that autocontrol valve is two electric T-shaped valves, is located at air inlet and gas outlet respectively, also can select a two-position four-way valve for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420120402 CN2779256Y (en) | 2004-12-20 | 2004-12-20 | Self-heated catalytic combustion reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420120402 CN2779256Y (en) | 2004-12-20 | 2004-12-20 | Self-heated catalytic combustion reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2779256Y true CN2779256Y (en) | 2006-05-10 |
Family
ID=36753343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420120402 Expired - Lifetime CN2779256Y (en) | 2004-12-20 | 2004-12-20 | Self-heated catalytic combustion reactor |
Country Status (1)
| Country | Link |
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| CN (1) | CN2779256Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101206027B (en) * | 2006-12-21 | 2010-12-15 | 中国科学院工程热物理研究所 | Method for steady operation of low concentration firedamp gas switching catalytic reaction |
| CN101275744B (en) * | 2007-03-28 | 2011-01-26 | 中国科学院大连化学物理研究所 | Apparatus for comprehensively utilizing coal mine to ventilate mash gas |
| CN101518739B (en) * | 2009-03-31 | 2012-06-27 | 华南理工大学 | Integral type catalyst with heat storage function as well as preparation method and application thereof |
| CN102787953A (en) * | 2011-08-15 | 2012-11-21 | 摩尔动力(北京)技术股份有限公司 | Method for burning thin component gas and device using method |
-
2004
- 2004-12-20 CN CN 200420120402 patent/CN2779256Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101206027B (en) * | 2006-12-21 | 2010-12-15 | 中国科学院工程热物理研究所 | Method for steady operation of low concentration firedamp gas switching catalytic reaction |
| CN101275744B (en) * | 2007-03-28 | 2011-01-26 | 中国科学院大连化学物理研究所 | Apparatus for comprehensively utilizing coal mine to ventilate mash gas |
| CN101518739B (en) * | 2009-03-31 | 2012-06-27 | 华南理工大学 | Integral type catalyst with heat storage function as well as preparation method and application thereof |
| CN102787953A (en) * | 2011-08-15 | 2012-11-21 | 摩尔动力(北京)技术股份有限公司 | Method for burning thin component gas and device using method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20141220 Granted publication date: 20060510 |