CN105202551A - Low-loss organic waste gas catalytic combustion treatment device - Google Patents
Low-loss organic waste gas catalytic combustion treatment device Download PDFInfo
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- CN105202551A CN105202551A CN201510664726.XA CN201510664726A CN105202551A CN 105202551 A CN105202551 A CN 105202551A CN 201510664726 A CN201510664726 A CN 201510664726A CN 105202551 A CN105202551 A CN 105202551A
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Abstract
The invention discloses a low-loss organic waste gas catalytic combustion treatment device. The low-loss organic waste gas catalytic combustion treatment device comprises a waste gas storage tank, a pre-treatment unit, a pre-heating unit and a catalytic combustion unit, wherein the pre-heating unit comprises a heat exchanger and a pre-heater which are connected in sequence; the heat exchanger internally comprises a low-temperature pipeline and a high-temperature pipeline; the catalytic combustion unit comprises a fixed bed catalytic reactor A and a fixed bed catalytic reactor B; each of the fixed bed catalytic reactor A and the fixed bed catalytic reactor B comprises a catalyst carrier and an active component; each catalyst carrier is in a ceramic honeycomb structure; and each active component is a rare earth oxide. A catalyst is cheap and easy to obtain, has low loss speed, is durable and safe, has energy-saving and environment-friendly properties and is suitable for popularization and application in organic waste gas treatment.
Description
Technical field
The present invention relates to a kind of low-loss 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, therefore, must preheating device be set, and also can discharges a large amount of heat energy while burning, if by the recycling of heat energy after burning, waste gas treatment process energy-conserving and environment-protective more can be made.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of catalyst and is cheaply easy to get, low-loss, 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 low-loss organic waste gas catalytic combustion treating apparatus, comprise waste gas holding vessel, pretreatment unit, preheating unit and 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 A and fixed bed catalytic reactor B, described fixed bed catalytic reactor A and fixed bed catalytic reactor B 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, described fixed bed catalytic reactor A and fixed bed catalytic reactor B is connected in parallel in described catalytic combustion unit, the tandem of described fixed bed catalytic reactor A has one-way cock one and one-way cock two, the tandem of described fixed bed catalytic reactor B has one-way cock three and one-way cock four, the gas outlet of described catalytic combustion unit is connected with the air inlet of described high-temperature pipe, 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 enters catalytic combustion unit;
If 4. now pending exhaust gas concentration is higher, then one-way cock one, one-way cock two, one-way cock three and one-way cock four are opened simultaneously, then gas is divided into two-way to enter fixed bed catalytic reactor A and fixed bed catalytic reactor B carries out catalyst combustion reaction simultaneously, make reaction comparatively complete, treatment effect is better; If pending exhaust gas concentration is lower, then only need open check valve door one and one-way cock two, or only open check valve door three and one-way cock four, make gas enter fixed bed catalytic reactor A or fixed bed catalytic reactor B arbitrary among, while guarantee catalytic effect, reduce the consumption to catalyst;
5. the 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;
6. the gas in high-temperature pipe after heat exchange cooling, then enters air by exhaust blower.
Therefore, beneficial effect of the present invention is:
1. catalyst can be aging gradually in long term high temperature environment, lose catalytic activity, if when exhaust gas concentration is lower, excess catalyst is used not improve reaction rate, but cause the accelerated ageing of catalyst, therefore fixed bed catalytic reactor A in parallel or fixed bed catalytic reactor B is set, can selects to use simultaneously or be used alternatingly two fixed bed catalytic reactors according to the exhaust gas concentration that need process, while guarantee reaction rate and treatment effect, slow down the speed of catalyst ageing.
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 low-loss organic waste gas catalytic combustion treating apparatus provided by the present invention, 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; Fixed bed catalytic reactor in parallel, can select as required to use simultaneously or be only suitable for one, slow down catalyst ageing speed; 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.Catalyst of the present invention is cheaply easy to get, and loss rate is low, 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 low-loss 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 A5 and fixed bed catalytic reactor B6, described fixed bed catalytic reactor A5 and fixed bed catalytic reactor B6 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, described fixed bed catalytic reactor A5 and fixed bed catalytic reactor B6 is connected in parallel in described catalytic combustion unit, the tandem of described fixed bed catalytic reactor A5 has one-way cock 1 and one-way cock 28, the tandem of described fixed bed catalytic reactor B6 has one-way cock 39 and one-way cock 4 10, the gas outlet of described catalytic combustion unit is connected with the air inlet of described high-temperature pipe, the gas outlet of described high-temperature pipe is connected with exhaust blower 11.
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 12.
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 14.
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 low-loss organic waste gas catalytic combustion treating apparatus, it is characterized in that: comprise waste gas holding vessel, pretreatment unit, preheating unit and 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 A and fixed bed catalytic reactor B, described fixed bed catalytic reactor A and fixed bed catalytic reactor B 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, described fixed bed catalytic reactor A and fixed bed catalytic reactor B is connected in parallel in described catalytic combustion unit, the tandem of described fixed bed catalytic reactor A has one-way cock one and one-way cock two, the tandem of described fixed bed catalytic reactor B has one-way cock three and one-way cock four, the gas outlet of described catalytic combustion unit is connected with the air inlet of described high-temperature pipe, the gas outlet of described high-temperature pipe is connected with exhaust blower.
2. a kind of low-loss organic waste gas catalytic combustion treating apparatus as claimed in claim 1, is characterized in that: described pretreatment unit is gas-filtering device.
3. a kind of low-loss 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. a kind of low-loss 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. a kind of low-loss 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. a kind of low-loss 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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| CN201510664726.XA CN105202551A (en) | 2015-10-15 | 2015-10-15 | Low-loss organic waste gas catalytic combustion treatment device |
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| CN201510664726.XA CN105202551A (en) | 2015-10-15 | 2015-10-15 | Low-loss organic waste gas catalytic combustion treatment device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110548391A (en) * | 2019-07-17 | 2019-12-10 | 上海第二工业大学 | Catalytic oxidation system for treating benzene organic matters by manganese-based catalyst prepared based on waste ternary electrode material |
| CN110848719A (en) * | 2019-11-23 | 2020-02-28 | 济南章运机械科技有限公司 | Catalytic combustion device |
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| DE4121133C1 (en) * | 1991-06-26 | 1992-10-01 | Bowas-Induplan Chemie Ges.M.B.H., Salzburg, At | |
| 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 |
| CN102913919A (en) * | 2011-08-01 | 2013-02-06 | 中国石油化工股份有限公司 | Method for purifying high-concentration organic waste gas |
| CN205155987U (en) * | 2015-10-15 | 2016-04-13 | 苏州韵蓝环保科技有限公司 | Low -loss catalytic combustion of organic exhaust gas processing apparatus |
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2015
- 2015-10-15 CN CN201510664726.XA patent/CN105202551A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4121133C1 (en) * | 1991-06-26 | 1992-10-01 | Bowas-Induplan Chemie Ges.M.B.H., Salzburg, At | |
| 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 |
| CN102913919A (en) * | 2011-08-01 | 2013-02-06 | 中国石油化工股份有限公司 | Method for purifying high-concentration organic waste gas |
| 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) |
| CN205155987U (en) * | 2015-10-15 | 2016-04-13 | 苏州韵蓝环保科技有限公司 | Low -loss catalytic combustion of organic exhaust gas processing apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110548391A (en) * | 2019-07-17 | 2019-12-10 | 上海第二工业大学 | Catalytic oxidation system for treating benzene organic matters by manganese-based catalyst prepared based on waste ternary electrode material |
| CN110848719A (en) * | 2019-11-23 | 2020-02-28 | 济南章运机械科技有限公司 | Catalytic combustion device |
| CN110848719B (en) * | 2019-11-23 | 2021-08-24 | 济南章运机械科技有限公司 | Catalytic combustion device |
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