CN205042364U - Low temperature heat accumulation formula catalytic oxidation processing apparatus - Google Patents
Low temperature heat accumulation formula catalytic oxidation processing apparatus Download PDFInfo
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- CN205042364U CN205042364U CN201520609164.4U CN201520609164U CN205042364U CN 205042364 U CN205042364 U CN 205042364U CN 201520609164 U CN201520609164 U CN 201520609164U CN 205042364 U CN205042364 U CN 205042364U
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Abstract
The utility model relates to a low temperature heat accumulation formula catalytic oxidation processing apparatus mainly solves potential safety hazard among the prior art, the combustion initiation temperature is high, the energy consumption is big problem. The utility model discloses an adopt a low temperature heat accumulation formula catalytic oxidation processing apparatus, including pretreatment systems, the fan, the heating chamber, low temperature catalytic oxidation bed, high temperature catalytic oxidation bed, online concentration analysis system, the pretreatment systems entry is equipped with VOCs gas access pipeline, the pretreatment systems export links to each other with the fan entry, the fan export links to each other with the heat exchanger, the heat exchanger links to each other with the heating chamber entry, the heating chamber export links to each other with low temperature catalytic oxidation bed entry, the export of low temperature catalytic oxidation bed links to each other with high temperature catalytic oxidation bed entry, the export of high temperature catalytic oxidation bed links to each other with the ceramic honey comb heat accumulator, the ceramic honey comb heat accumulator with the heat exchanger links to each other, and above -mentioned problem has been solved with the technical scheme that the chimney links to each other betterly to the heat exchanger, can be used to in the processing of low temperature heat accumulation formula catalytic oxidation.
Description
Technical field
The utility model relates to a kind of Low Temperature Storage hot type catalytic oxidation treatment device.
Background technology
The Treatment process of current volatile organic matter (VOCs) mainly contains two classes: a class is recovery technology, and a class is destroy technology.Recovery technology is the method by physics, such as, change temperature, pressure or take the method for the method such as selective absorbent and permoselective membrane concentration and separation organic vapors pollutant, mainly contain adsorption technology, absorption techniques, condensation technology and membrane separation technique.Destroy technology is mainly through chemistry or biochemical projection, with heat, light, catalyst and microorganism, organic compound is changed into the inorganic molecules compound of the nonhazardous such as carbon dioxide and water or low murder by poisoning, mainly contain direct combustion method, catalytic combustion, biological oxidation, photochemical catalytic oxidation, plasma destruction etc.
The VOCs gas that recovery technology is higher mainly for concentration or economic worth is high reclaims, and the requirement that can meet national environmental standard in some field directly enters in air.And destroy technology is when mainly cannot reach standard-required for recovery technology and the VOCs Treatment process taked." discharge standard of air pollutants " requires non-methane hydrocarbon emission concentration≤120mg/m
3, some regional provincial standards require non-methane hydrocarbon emission concentration≤80mg/m
3, suggestions such as " petro chemical industry pollutant emission standards " solicits original text requirement benzene discharge index≤1mg/m
3, recovery technology is to reach above standard, then technology is very difficult on realizing, and need reach standard further in conjunction with destroy technology.
But direct combustion method operating temperature is up to 800 DEG C in current destroy technology, and equipment cost is high, in refining enterprise application process, there is potential safety hazard; The organic pollution occasion that major part catalytic combustion technology is not suitable with for high concentration need carry out pretreatment, and because catalyst operating temperature is substantially at about 400 DEG C, higher than most of organic matter initiation temperature, also there is the danger of blast on using.If carry out dilution pretreatment to organic pollution, then the heat temperature raising of air is needed to the heat energy (electrical heating or fuel heating) of at substantial, in the VOCs of Wind Volume/low concentration administers, operating cost is too high, causes energy waste.
Utility model content
The problem that technical problem to be solved in the utility model is potential safety hazard in prior art, initiation temperature is high, energy consumption is large, provides a kind of new Low Temperature Storage hot type catalytic oxidation treatment device.This device is used in Low Temperature Storage hot type catalytic oxidation treatment, has without potential safety hazard, initiation temperature is low, energy consumption is little advantage.
For solving the problem, the technical solution adopted in the utility model is as follows: a kind of Low Temperature Storage hot type catalytic oxidation treatment device, it is characterized in that comprising pretreatment system, blower fan, heating clamber, low-temperature catalytic oxidation bed, high-temperature S removal bed, online concentration analysis system, pretreatment system entrance is provided with VOCs gas access pipeline, pretreatment system outlet is connected with fans entrance, fan outlet is connected with the cold journey entrance of heat exchanger, the cold journey outlet of heat exchanger is connected with heating clamber entrance, heating chamber outlet is connected with low-temperature catalytic oxidation bed entrance, the outlet of low-temperature catalytic oxidation bed is connected with high-temperature S removal bed entrance, the outlet of high-temperature S removal bed is connected with honeycomb ceramic heat accumulator, honeycomb ceramic heat accumulator is connected with the hot journey entrance of described heat exchanger, the outlet of exchanger heat journey is connected with chimney, online concentration analysis system is connected with the connecting line of chimney with pretreatment system suction line, fan outlet pipeline, heat exchanger.
In technique scheme, preferably, described VOCs gas access pipeline is connected with VOCs high concentration retracting device, and VOCs high concentration retracting device is connected with pretreatment system.
In technique scheme, preferably, described fan outlet pipeline is provided with bypass and is directly connected with heating clamber suction line, and described bypass is provided with control valve, and control valve is connected with the temperature-measuring element on heating chamber outlet pipeline by holding wire.
In technique scheme, preferably, described pretreatment system is provided with air inlet pipeline, and described air inlet pipeline is provided with adjustable automatic valve, and the temperature-measuring element that adjustable automatic valve is exported by holding wire and low-temperature catalytic oxidation bed is connected.
For there is potential safety hazard in existing catalytic combustion technology (because catalyst operating temperature is higher than the organic initiation temperature of major part, have hidden peril of explosion), the shortcoming such as initiation temperature high (use because of high temperature catalyst), energy consumption large (during process low concentration VOCs gas, electric heater is always in running order).This patent VOCs treatment index is high, and unit efficiency is high.By combining with front end recovery technology, this technical method can not only meet existing environmental protection standard requirement, and " petro chemical industry pollutant emission standard " and " petroleum refining enterprise emission of industrial pollutants standard " requirement that national environmental protection department is about to issuing and implementation can be met, wherein non-methane hydrocarbon emission index≤80mg/m
3, treatment effeciency>=99%; Benzene≤1mg/m
3, toluene≤8mg/m
3; Dimethylbenzene≤10mg/m
3, process index is far above current most of organic gas recycling and administration technology.Process VOCs gas can meet interval or continued emissions saves energy consumption, and concentration for the treatment of wide accommodation, meets most of VOCs gas treatment index.This patent adopts the process route of " front end recovery+pretreatment+regenerative heat-exchange+heating+low temperature catalyst catalysis+high temperature catalyst catalysis ".Under the effect of pretreatment system and online concentration analyzer, remain that the concentration of mist is in the scope of the lower limit 25% of explosion limit; Secondly low temperature catalyst catalyst operation temperature (200 DEG C ~ 300 DEG C) is significantly lower than the operating temperature of current most of supported precious metal catalyst, and lower than the organic initiation temperature of major part, comparatively directly burning is higher with other catalytic oxidation technologies securities.Compare traditional catalytic oxidation technologies, this patent adopts the technology path of regenerative heat-exchange, even if organic exhaust gas material concentration is low, in interval air inlet situation, due to honeycomb ceramic heat accumulator energy heat insulation effect preferably, supplied materials VOCs gas easily can reach the temperature of low temperature catalyst bed work after honeycomb ceramic heat accumulator, thus make heater on time shorter, electric energy or other energy consumption consumption lower.This patent is by changing into CO organic exhaust gas such as VOCs
2and H
2o, does not produce nitrogen oxide simultaneously, and compare other directly destroy technologies such as burning, non-secondary pollution gas produces, and environmental protection more, achieves good technique effect.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of device described in the utility model.
Fig. 2 is pretreatment system schematic flow sheet.
In Fig. 1 or Fig. 2,1 is VOCs high concentration treating apparatus; 2 is pretreatment system; 3 is blower fan; 4 is control valve; 5 is heat exchanger; 6 is heating clamber; 7 is low-temperature catalytic oxidation layer; 8 is high-temperature S removal layer; 9 is honeycomb ceramic heat accumulator; 10 is online concentration analysis system; 11 is chimney; 2a is the control valve on diluent air pipeline; 2b is gas mixer chamber, and 2c is mist air inlet fan; 2d is VOCs gas inlet.
Below by embodiment, the utility model is further elaborated, but is not limited only to the present embodiment.
Detailed description of the invention
[embodiment 1]
A kind of Low Temperature Storage hot type catalytic oxidation treatment device, as shown in Figure 1, comprise pretreatment system, blower fan, heating clamber, low-temperature catalytic oxidation bed, high-temperature S removal bed, online concentration analysis system, pretreatment system entrance is provided with VOCs gas access pipeline, pretreatment system outlet is connected with fans entrance, fan outlet is connected with heat exchanger, heat exchanger is connected with heating clamber entrance, heating chamber outlet is connected with low-temperature catalytic oxidation bed entrance, the outlet of low-temperature catalytic oxidation bed is connected with high-temperature S removal bed entrance, the outlet of high-temperature S removal bed is connected with honeycomb ceramic heat accumulator, honeycomb ceramic heat accumulator is connected with described heat exchanger, heat exchanger is connected with chimney, online concentration analysis system is connected with the connecting line of chimney with pretreatment system suction line, fan outlet pipeline, heat exchanger.
Adopt device as shown in Figure 1 to carry out VOCs gas recycling and administration, flow process is moved towards: VOCs high concentration retracting device → pretreatment system → blower fan → heat exchanger cold journey → heater → low-temperature catalytic oxidation bed → hot journey → chimney of high-temperature S removal bed → honeycomb ceramic heat accumulator → heater.
VOCs high concentration retracting device can be adsorption system, condensate recovery system, film separation system etc., is mainly used in reclaiming concentration and reaches 100g/m
3~ 1000g/m
3above high concentration VOCs gas.Pretreatment system (as shown in Figure 2) is made up of the control valve (2a) on diluent air pipeline and gas mixer chamber (2b), be mainly used in the VOCs gas diluting low concentration, its concentration is down in the safe range of low-temperature catalytic oxidation device use.By variable frequency work, blower fan remains that its blower fan leading inlet is in the working range of pressure-fired.Control valve (4) for regulating gas temperature in export pipeline after heat exchanger, and coordinates with heater gas in pipeline was in rational working range before entering low-temperature catalytic oxidation bed; Low-temperature catalytic oxidation layer, high-temperature S removal layer, honeycomb ceramic heat accumulator eliminate VOCs gas for purifying, and make its concentration be down to needed for below the standard-required that reaches; Online concentration analyzer is for monitoring supplied materials gas concentration, catalytic oxidation front reaction concentration and outlet concentration; System detects the concentration of the system of entering, temperature and changes in flow rate situation in real time, and online concentration analyzer measures explosion-proof fan front and back ends concentration levels in real time.When blower fan rear end VOCs concentration higher than lower explosive limit 25% time, control valve (2a) then on diluent air pipeline strengthens dilution dynamics, its concentration is down in less than 25% of lower explosive limit, low-temperature catalytic oxidation system is within safe operating range all the time.Chimney is mainly used in emission compliance gas;
Power supply unit mainly blower fan and heater in system, in addition respective line and equipment are provided with temperature, flow, pressure and Concentration Testing transmitter, each detection signal and control variables are collected and are entered PLC (programmable logic controller (PLC)) control system, and control whole system by monitoring computer and run.By monitoring computer startup optimization system, first heater starts working, and when heater reaches the temperature of default, explosion-proof fan is started working, and VOCs gas enters low-temperature catalytic oxidation governing system by front end high concentration retracting device.
Monitoring computer monitors VOCs gas temperature after heat exchanger in real time simultaneously, and when temperature is temperature required lower than low-temperature catalytic oxidation bed, heater is started working; When temperature is higher than low-temperature catalytic oxidation bed temperature, control valve (4) regulates aperture in real time, reduces VOCs gas temperature, makes in its operating temperature range maintained required for low-temperature catalytic oxidation bed; VOCs gas is after low-temperature oxidation bed, and the VOCs gas of more than 90% is broken down into CO in low-temperature catalytic oxidation bed
2and H
2o, simultaneously releases heat enter high-temperature S removal bed, simultaneously when now gas temperature is higher, pretreatment system increases dilution dynamics, reduces VOCs gas combustion temperature; Fill in high-temperature S removal bed and be different from the high temperature catalyst that the precious metals pt of low-temperature catalytic oxidation bed etc. is representative, required for this catalyst, operating temperature is temperature required higher than low-temperature catalytic oxidation bed.Residue small part VOCs gas resolves into CO further in this interval
2and H
2o, releases heat enters honeycomb ceramic heat accumulator simultaneously, and in honeycomb ceramic heat accumulator, further high-temp combustion, reaches the treatment effeciency of more than 99%.
To process the oil gas of gasoline volatilization, inlet concentration is 60g/m
3normal temperature petrol gas, after system pretreatment, concentration dilution is 6g/m
3(25% of the lower limit of explosion limit is 9.4g/m
3), lower than explosion limit lower limit 25%, after heat exchanger heat exchange, temperature is increased to about 230 DEG C, and now heater quits work, after the process of low-temperature catalytic oxidation bed, high-temperature S removal bed and ceramic heat storage body, exit concentration can reach 80mg/m
3below, treatment effeciency reaches more than 99%.
Claims (4)
1. a Low Temperature Storage hot type catalytic oxidation treatment device, it is characterized in that comprising pretreatment system, blower fan, heating clamber, low-temperature catalytic oxidation bed, high-temperature S removal bed, online concentration analysis system, pretreatment system entrance is provided with VOCs gas access pipeline, pretreatment system outlet is connected with fans entrance, fan outlet is connected with the cold journey entrance of heat exchanger, the cold journey outlet of heat exchanger is connected with heating clamber entrance, heating chamber outlet is connected with low-temperature catalytic oxidation bed entrance, the outlet of low-temperature catalytic oxidation bed is connected with high-temperature S removal bed entrance, the outlet of high-temperature S removal bed is connected with honeycomb ceramic heat accumulator, honeycomb ceramic heat accumulator is connected with the hot journey entrance of described heat exchanger, the outlet of exchanger heat journey is connected with chimney, online concentration analysis system is connected with the connecting line of chimney with pretreatment system suction line, fan outlet pipeline, heat exchanger.
2. Low Temperature Storage hot type catalytic oxidation treatment device according to claim 1, it is characterized in that described VOCs gas access pipeline is connected with VOCs high concentration retracting device, VOCs high concentration retracting device is connected with pretreatment system.
3. Low Temperature Storage hot type catalytic oxidation treatment device according to claim 1, it is characterized in that described fan outlet pipeline is provided with bypass and is directly connected with heating clamber suction line, described bypass is provided with control valve, and control valve is connected with the temperature-measuring element on heating chamber outlet pipeline by holding wire.
4. Low Temperature Storage hot type catalytic oxidation treatment device according to claim 1, it is characterized in that described pretreatment system is provided with air inlet pipeline, described air inlet pipeline is provided with adjustable automatic valve, and the temperature-measuring element that adjustable automatic valve is exported by holding wire and low-temperature catalytic oxidation bed is connected.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597249A (en) * | 2016-03-15 | 2016-05-25 | 江苏同庆安全科技有限公司 | Waste gas treatment device and process with safety diffusion function |
| CN106938177A (en) * | 2017-04-28 | 2017-07-11 | 广州黑马科技有限公司 | A kind of organic waste gas treatment equipment |
| CN108031277A (en) * | 2017-12-08 | 2018-05-15 | 上海科仁实业有限公司 | Waste gas containing VOC catalytic purification processing method |
| CN108926990A (en) * | 2017-05-24 | 2018-12-04 | 中国石油化工股份有限公司 | A kind of catalytic reactor for VOCs gas purification |
| CN109550395A (en) * | 2018-12-29 | 2019-04-02 | 嘉园环保有限公司 | A kind of organic exhaust gas catalytic oxidizing equipment |
| CN111495180A (en) * | 2020-04-26 | 2020-08-07 | 南京昊安科技工程有限公司 | Final-stage integrated intelligent treatment process for harmful waste gas |
| CN114870622A (en) * | 2022-05-18 | 2022-08-09 | 中科领清(北京)环境科技有限公司 | Organic waste gas administers device |
-
2015
- 2015-08-13 CN CN201520609164.4U patent/CN205042364U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597249A (en) * | 2016-03-15 | 2016-05-25 | 江苏同庆安全科技有限公司 | Waste gas treatment device and process with safety diffusion function |
| CN106938177A (en) * | 2017-04-28 | 2017-07-11 | 广州黑马科技有限公司 | A kind of organic waste gas treatment equipment |
| CN108926990A (en) * | 2017-05-24 | 2018-12-04 | 中国石油化工股份有限公司 | A kind of catalytic reactor for VOCs gas purification |
| CN108926990B (en) * | 2017-05-24 | 2021-02-23 | 中国石油化工股份有限公司 | Catalytic reactor for VOCs gas purification |
| CN108031277A (en) * | 2017-12-08 | 2018-05-15 | 上海科仁实业有限公司 | Waste gas containing VOC catalytic purification processing method |
| CN108031277B (en) * | 2017-12-08 | 2020-07-31 | 上海汉克威自动化科技有限公司 | VOC-containing waste gas catalytic purification treatment method |
| CN109550395A (en) * | 2018-12-29 | 2019-04-02 | 嘉园环保有限公司 | A kind of organic exhaust gas catalytic oxidizing equipment |
| CN111495180A (en) * | 2020-04-26 | 2020-08-07 | 南京昊安科技工程有限公司 | Final-stage integrated intelligent treatment process for harmful waste gas |
| CN111495180B (en) * | 2020-04-26 | 2022-06-21 | 南京昊安科技工程有限公司 | Final-stage integrated intelligent treatment process for harmful waste gas |
| CN114870622A (en) * | 2022-05-18 | 2022-08-09 | 中科领清(北京)环境科技有限公司 | Organic waste gas administers device |
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