CN105202552A - Temperature-controllable organic exhaust gas catalytic combustion treatment device - Google Patents
Temperature-controllable organic exhaust gas catalytic combustion treatment device Download PDFInfo
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- CN105202552A CN105202552A CN201510664727.4A CN201510664727A CN105202552A CN 105202552 A CN105202552 A CN 105202552A CN 201510664727 A CN201510664727 A CN 201510664727A CN 105202552 A CN105202552 A CN 105202552A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
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Abstract
The invention discloses a temperature-controllable organic exhaust gas catalytic combustion treatment device which comprises an exhaust gas storage tank, a pretreatment unit, a preheating unit and a catalytic combustion unit, wherein the preheating unit comprises a heat exchanger and a preheater which are sequentially connected; the heat exchanger comprises a low-temperature pipeline and a high-temperature pipeline; the catalytic combustion unit comprises a fixed bed catalytic reactor and a temperature detector; the temperature detector is installed at a gas inlet of the catalytic combustion unit; the fixed bed catalytic reactor comprises a catalyst support and an active component; the catalyst support is in a ceramic honeycomb structure; and the active component is rare-earth oxides. The temperature-controllable organic exhaust gas catalytic combustion treatment device has the advantages of controllable reaction temperature, cheap and accessible catalyst, high durability and safety, energy saving and environment friendliness, and is suitable for popularization and use in organic exhaust gas treatment.
Description
Technical field
The present invention relates to a kind of temperature-controllable organic waste gas catalytic combustion treating apparatus, belong to exhaust-gas treatment field.
Background technology
Catalytic combustion is by under catalyst at low temperatures (200 ~ 400 DEG C), realize organic complete oxidation, therefore, less energy consumption, easy and simple to handle, safety, purification efficiency is high, in the organic exhaust gas organic waste-gas purification that particularly recovery value is little, and such as chemical industry, spray paint, the sector application such as insulating materials, enamel-covered wire, coating material production is comparatively wide, the catalyst burnt due to current catalytic organism mostly is noble metal (based on platinum, palladium) catalyst.But because noble metal catalyst is expensive, resource is few, therefore, the research of more economical new catalyst becomes new developing way; In addition, catalyst has a catalytic activity temperature, catalyst light-off temperature is claimed concerning catalytic combustion, the temperature of waste gas and bed must be made to reach initiation temperature and just can carry out catalytic combustion, too low temperature also can make rate of catalysis reaction too low, and therefore temperature controls to be the problem needing in catalytic reaction to solve.
Summary of the invention
Technical problem to be solved by this invention is to provide that a kind of reaction temperature is controlled, and catalyst is cheaply easy to get, and energy-efficient organic waste gas catalytic combustion treating apparatus; Further, provide a kind of and have protective effect to catalyst and the organic waste gas catalytic combustion treating apparatus of use safety.
For solving above technical problem, the technical solution used in the present invention is: a kind of temperature-controllable organic waste gas catalytic combustion treating apparatus, comprise waste gas holding vessel, pretreatment unit, preheating unit, catalytic combustion unit, described preheating unit comprises the heat exchanger and preheater that connect successively, cryogenic piping and high-temperature pipe is comprised in described heat exchanger, described catalytic combustion unit comprises fixed bed catalytic reactor and temperature-detecting device, described temperature-detecting device is installed on the air inlet of described catalytic combustion unit, described fixed bed catalytic reactor comprises catalyst carrier and active component, described catalyst carrier is ceramic honeycomb, described active component is rare earth oxide, described discarded holding vessel is connected with pretreatment unit, described pretreatment unit is connected with the air inlet of described cryogenic piping, the gas outlet of described cryogenic piping is connected with described preheater, the gas outlet of described preheater is connected with the air inlet of described catalytic combustion unit, the gas outlet of described catalytic combustion unit is connected with the air inlet of described high-temperature pipe, and the gas outlet of described high-temperature pipe is connected with exhaust blower.
Described pretreatment unit is gas-filtering device.
Be in series with spark arrester one before the air inlet of described preheating unit, behind described catalytic combustion unit gas outlet, be in series with spark arrester two.
The air inlet place of described preheating unit is provided with gas concentration inspect device, and the air inlet of described preheating unit is connected with benefit air-cooler by three-way pipe.
The gas outlet of described waste gas holding vessel is connected with air inlet fan, and the gas outlet of described air inlet fan connects the air inlet of described pretreatment unit.
Described preheater is high-grade fuel burner or high temperature resistance silk.
The technological process using the present invention to carry out exhaust-gas treatment is:
1. the organic exhaust gas in waste gas holding vessel enters pretreatment unit under the suction of air inlet fan, after pretreatment unit filters, removes dust, drop and catalyst poison wherein, to avoid blocking and the catalyst poisoning of beds;
2. the waste gas after filtering, through spark arrester one, by gas concentration inspect device, when organic exhaust gas concentration likely exceedes controlling value, is opened benefit air-cooler and is watered down safety value;
3. the gas after over-richness controls enters preheating unit, and enter preheater heating through heat exchanger cryogenic piping, the gas after heating is after temperature-detecting device detects, if temperature is too low, then signal feedback is to preheater, raises, preheat temperature if temperature is too high, then signal feedback is to preheater, preheat temperature is reduced, if when preheater does not work, temperature is still too high, then open and mend air-cooler, gas and vapor permeation temperature is reduced;
4. the gas after over-richness, temperature control enters catalytic combustion unit, catalytic combustion is carried out in fixed bed catalytic reactor, gas after burning returns in the high-temperature pipe of heat exchanger through spark arrester two, now the gas temperature in high-temperature pipe can be passed to the gas in cryogenic piping by heat exchanger, thus untreated waste gas is heated, without the need to opening preheater again by heat exchanger;
5. the gas in high-temperature pipe after heat exchange cooling, then enters air by exhaust blower.
Beneficial effect of the present invention is:
1. the operating temperature due to catalyst is very large to the burn-in effects of catalyst, and thermal creep stress is bad with control, can make catalyst fritting or sintering, thus causes the decline of catalyst surface area and reduce activity.Operating temperature is higher, and aging speed is faster.Therefore, in the active temperature range of catalyst, select suitable reaction temperature to contribute to the life-span of extending catalyst, but too low reaction temperature is also worthless, can reduce reaction rate.Therefore before gas enters catalytic bed, carry out temperature detection, regulate and make gas temperature be within the scope of catalyst optimal reaction temperature, raising reaction efficiency can be made, reduce catalyst ageing speed.
2. the rare earth oxide used is as catalyst, and rare earth enriches in china natural resources, has low price, the advantage that resource is easy to get compared with noble metal catalyst;
3. arrange pretreatment unit, the poisonous substance of dust, drop and catalyst in removing waste gas, avoids blocking and the catalyst poisoning of beds;
4. spark arrester is installed, propagation of flame when preventing organic exhaust gas from burning on beds, improves the security of equipment;
5. arrange gas controlling device and mend air-cooler, the concentration due to organic exhaust gas must control in less than 25% of corresponding organic matter explosion limit, when organic exhaust gas concentration likely exceedes this value, can be watered down safety value, the security of further raising equipment;
6. heat exchanger is set, after catalytic reaction starts, reaction heat can be reclaimed and carry out preheating waste gas, economize energy.
A kind of temperature-controllable organic waste gas catalytic combustion treating apparatus provided by the present invention, set temperature checkout gear, ensures that rate of catalysis reaction reduces high temperature to the loss of catalyst; Adopt rare earth oxide in conjunction with the carrier of ceramic honeycomb as fixed bed catalytic reactor, Catalytic Combustion Effect is good, and material is cheaply easy to get; Be provided with pretreatment unit simultaneously, block and catalyst poisoning to prevent catalytic bed; And spark arrester, gas controlling device and benefit air-cooler are installed, improve the safety in utilization of equipment; Heat-exchanger rig is installed, improves the utilization rate of reaction heat.Reaction temperature of the present invention is controlled, and catalyst is cheaply easy to get, durable security, energy-conserving and environment-protective, is adapted at promoting the use of in VOCs treatment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.Following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
A kind of temperature-controllable organic waste gas catalytic combustion treating apparatus as shown in Figure 1, comprise waste gas holding vessel 1, pretreatment unit 2, preheating unit and catalytic combustion unit, described preheating unit comprises the heat exchanger 3 and preheater 4 that connect successively, cryogenic piping and high-temperature pipe is comprised in described heat exchanger 3, described catalytic combustion unit comprises fixed bed catalytic reactor 5 and temperature-detecting device 6, described temperature-detecting device 6 is installed on the air inlet of described catalytic combustion unit, described fixed bed catalytic reactor 5 comprises catalyst carrier and active component, described catalyst carrier is ceramic honeycomb, described active component is rare earth oxide, described discarded holding vessel 1 is connected with pretreatment unit 2, described pretreatment unit 2 is connected with the air inlet of described cryogenic piping, the gas outlet of described cryogenic piping is connected with described preheater 4, the gas outlet of described preheater 4 is connected with the air inlet of described catalytic combustion unit, the gas outlet of described catalytic combustion unit is connected with the air inlet of described high-temperature pipe, and the gas outlet of described high-temperature pipe is connected with exhaust blower 7.
Described pretreatment unit 2 is gas-filtering device.
The air inlet place of described preheating unit is provided with gas concentration inspect device, and the air inlet of described preheating unit is connected with by three-way pipe mends air-cooler 8.
Be in series with spark arrester 1 before the air inlet of described preheating unit, behind described catalytic combustion unit gas outlet, be in series with spark arrester 2 10.
The gas outlet of described waste gas holding vessel 1 is connected with air inlet fan, and the gas outlet of described air inlet fan connects the air inlet of described pretreatment unit 2.
Described preheater 4 is high-grade fuel burner or high temperature resistance silk.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and distortion, these improve and distortion also should be considered as protection scope of the present invention.
Claims (6)
1. a temperature-controllable organic waste gas catalytic combustion treating apparatus, it is characterized in that: comprise waste gas holding vessel, pretreatment unit, preheating unit, catalytic combustion unit, described preheating unit comprises the heat exchanger and preheater that connect successively, cryogenic piping and high-temperature pipe is comprised in described heat exchanger, described catalytic combustion unit comprises fixed bed catalytic reactor and temperature-detecting device, described temperature-detecting device is installed on the air inlet of described catalytic combustion unit, described fixed bed catalytic reactor comprises catalyst carrier and active component, described catalyst carrier is ceramic honeycomb, described active component is rare earth oxide, described discarded holding vessel is connected with pretreatment unit, described pretreatment unit is connected with the air inlet of described cryogenic piping, the gas outlet of described cryogenic piping is connected with described preheater, the gas outlet of described preheater is connected with the air inlet of described catalytic combustion unit, the gas outlet of described catalytic combustion unit is connected with the air inlet of described high-temperature pipe, and the gas outlet of described high-temperature pipe is connected with exhaust blower.
2. temperature-controllable organic waste gas catalytic combustion treating apparatus as claimed in claim 1, is characterized in that: described pretreatment unit is gas-filtering device.
3. temperature-controllable organic waste gas catalytic combustion treating apparatus as claimed in claim 1, is characterized in that: be in series with spark arrester one before the air inlet of described preheating unit, is in series with spark arrester two behind described catalytic combustion unit gas outlet.
4. temperature-controllable organic waste gas catalytic combustion treating apparatus as claimed in claim 1, is characterized in that: the air inlet place of described preheating unit is provided with gas concentration inspect device, is connected with benefit air-cooler before the air inlet of described preheating unit by three-way pipe.
5. temperature-controllable organic waste gas catalytic combustion treating apparatus as claimed in claim 1, it is characterized in that: the gas outlet of described waste gas holding vessel is connected with air inlet fan, the gas outlet of described air inlet fan connects the air inlet of described pretreatment unit.
6. temperature-controllable organic waste gas catalytic combustion treating apparatus as claimed in claim 1, is characterized in that: described preheater is high-grade fuel burner or high temperature resistance silk.
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| CN201510664727.4A CN105202552A (en) | 2015-10-15 | 2015-10-15 | Temperature-controllable organic exhaust gas catalytic combustion treatment device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106322407A (en) * | 2016-08-31 | 2017-01-11 | 合肥恒力装备有限公司 | Waste gas incineration device and method |
| CN106594764A (en) * | 2016-12-29 | 2017-04-26 | 江门市崖门新财富环保工业有限公司 | Secondary combustion chamber type waste gas treatment system |
| CN108758661A (en) * | 2018-06-01 | 2018-11-06 | 奥蓝特（天津）科技发展有限公司 | A kind of direct-fired efficient burning furnace |
| CN111895430A (en) * | 2020-08-07 | 2020-11-06 | 浙江工业大学 | A catalytic combustion device and method based on electromagnetic induction heating foam metal catalyst |
| CN113266837A (en) * | 2021-04-06 | 2021-08-17 | 常州大学 | Treatment method of chlorine-containing organic waste gas |
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| WO1993000557A1 (en) * | 1991-06-26 | 1993-01-07 | Bowas-Induplan Chemie Ges.M.B.H. | Plant and process for incinerating explosives |
| CN202485009U (en) * | 2012-02-28 | 2012-10-10 | 苏州乔尼设备工程有限公司 | Organic exhaust gas catalyzing purifying device |
| CN102824830A (en) * | 2012-09-22 | 2012-12-19 | 浙江工业大学 | Tubular reactor and method for degrading waste gases with ultraviolet (UV) |
| CN102913918A (en) * | 2011-08-01 | 2013-02-06 | 中国石油化工股份有限公司 | Catalytic combustion processing method of high-concentration organic exhaust gas |
| CN205155986U (en) * | 2015-10-15 | 2016-04-13 | 苏州韵蓝环保科技有限公司 | Controllable catalytic combustion of organic exhaust gas processing apparatus of temperature |
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2015
- 2015-10-15 CN CN201510664727.4A patent/CN105202552A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993000557A1 (en) * | 1991-06-26 | 1993-01-07 | Bowas-Induplan Chemie Ges.M.B.H. | Plant and process for incinerating explosives |
| CN102913918A (en) * | 2011-08-01 | 2013-02-06 | 中国石油化工股份有限公司 | Catalytic combustion processing method of high-concentration organic exhaust gas |
| CN202485009U (en) * | 2012-02-28 | 2012-10-10 | 苏州乔尼设备工程有限公司 | Organic exhaust gas catalyzing purifying device |
| CN102824830A (en) * | 2012-09-22 | 2012-12-19 | 浙江工业大学 | Tubular reactor and method for degrading waste gases with ultraviolet (UV) |
| CN205155986U (en) * | 2015-10-15 | 2016-04-13 | 苏州韵蓝环保科技有限公司 | Controllable catalytic combustion of organic exhaust gas processing apparatus of temperature |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106322407A (en) * | 2016-08-31 | 2017-01-11 | 合肥恒力装备有限公司 | Waste gas incineration device and method |
| CN106594764A (en) * | 2016-12-29 | 2017-04-26 | 江门市崖门新财富环保工业有限公司 | Secondary combustion chamber type waste gas treatment system |
| CN108758661A (en) * | 2018-06-01 | 2018-11-06 | 奥蓝特（天津）科技发展有限公司 | A kind of direct-fired efficient burning furnace |
| CN111895430A (en) * | 2020-08-07 | 2020-11-06 | 浙江工业大学 | A catalytic combustion device and method based on electromagnetic induction heating foam metal catalyst |
| CN113266837A (en) * | 2021-04-06 | 2021-08-17 | 常州大学 | Treatment method of chlorine-containing organic waste gas |
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Application publication date: 20151230 |