CN210699424U - Organic waste gas adsorbs desorption catalytic combustion system - Google Patents
Organic waste gas adsorbs desorption catalytic combustion system Download PDFInfo
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- CN210699424U CN210699424U CN201921513853.XU CN201921513853U CN210699424U CN 210699424 U CN210699424 U CN 210699424U CN 201921513853 U CN201921513853 U CN 201921513853U CN 210699424 U CN210699424 U CN 210699424U
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- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Incineration Of Waste (AREA)
Abstract
The embodiment of the utility model discloses an organic waste gas adsorbs desorption catalytic combustion system, including along the flow direction of organic waste gas in proper order setting up preprocessing device, adsorption equipment, desorption catalytic combustion device and fan chimney device, adsorption equipment includes first adsorption tower, second adsorption tower and the third adsorption tower of alternative work, is connected with first desorption pipeline on first adsorption tower, second adsorption tower and the third adsorption tower, first desorption pipeline is connected with desorption catalytic combustion device; desorption catalytic combustion device includes the heat exchanger that is connected with first desorption pipeline, and heat exchanger has the desorption fan through second desorption pipe connection, and heat exchanger air-out end is connected with the catalytic combustion purifying tower, carries out circulation treatment at adsorption equipment and desorption catalytic combustion device through desorption pipeline and valve control organic waste gas, has effectively improved organic waste gas's purifying effect.
Description
Technical Field
The embodiment of the utility model provides a relate to exhaust-gas treatment technical field, concretely relates to organic waste gas adsorbs desorption catalytic combustion system.
Background
With the development of chemical industry and manufacturing industry, the industrial emission source and emission amount of volatile organic compounds are increasing. The organic waste gas contains suspended particulate matter, aromatic compounds, Volatile Organic Compounds (VOCS) such as benzene, toluene, xylene and formaldehyde, and malodorous gases containing sulfur elements. The organic waste gas not only pollutes the atmospheric environment but also causes harm to the human body, and when the concentration of the VOCS reaches a certain value, fire and explosion can be caused. Along with the continuous improvement of the exhaust emission standard of the environmental protection department, various organic exhaust gas treatment devices gradually appear in the market.
Common treatment modes for organic waste gas include activated carbon adsorption, direct combustion and catalytic combustion technologies. Activated carbon adsorption is a mature and widely applied organic waste gas treatment technology at present, but has certain limitation on organic waste gas treatment, and if a saturated adsorbent is placed in an air environment for a long time, organic substances desorbed from the saturated adsorbent cause secondary pollution to the atmospheric environment, and large-scale organic waste gas cannot be treated due to easy saturation. The main disadvantage of direct combustion is that the heating exhaust gas must have high concentration, some fuel oil or fuel gas is wasted, and the heat after combustion is directly discharged, which results in more waste of energy.
The catalytic combustion method is also called flameless combustion, which is essentially catalytic oxidation reaction, adopts proper catalyst, utilizes the deep catalytic oxidation activity of the catalyst to combine organic components with oxidation at the temperature below the ignition point to generate nontoxic CO2And H2And O, achieving the purpose of purification. However, the disadvantages are that the heat generated by the organic waste gas after combustion is not utilized and directly discharged, which causes energy waste, the evacuation of the purified waste gas with reaction heat can cause serious potential safety hazard, the existing catalytic combustion device can also cause the evacuation of part of the waste gas without complete purification, and in the past, the hidden danger still exists on the air quality.
Therefore, the adsorption and desorption type catalytic combustion system in the prior art can efficiently treat the purification process, can effectively improve the purification effect compared with the traditional organic waste gas treatment system, and improves the stability of the purification system, but the adsorption and desorption type catalytic combustion system in the prior art has poor purification treatment effect on organic waste gas with low concentration and medium and high air volume, so that the pollutant content in the discharged gas is higher.
SUMMERY OF THE UTILITY MODEL
Therefore, the embodiment of the utility model provides an organic waste gas adsorbs desorption catalytic combustion system, through the absorption desorption catalytic combustion system who forms by adsorption equipment and desorption catalytic combustion device combination, through pipeline and valve control organic waste gas at adsorption equipment and desorption catalytic combustion device circulation processing, organic waste gas's purifying effect has effectively been improved to solve among the prior art because catalytic combustion system leads to the higher problem of pollutant content among the exhaust gas to low concentration, the organic waste gas purification treatment effect of well high amount of wind is not good enough.
In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:
an organic waste gas adsorption and desorption catalytic combustion system comprises a pretreatment device, an adsorption device, a desorption catalytic combustion device and a fan chimney device which are sequentially arranged along the flowing direction of the organic waste gas,
the pretreatment device is arranged at the air inlet end of the adsorption device, and the fan chimney device is arranged at the air outlet end of the adsorption device;
the adsorption device comprises a first adsorption tower, a second adsorption tower and a third adsorption tower which work alternately, wherein honeycomb-shaped activated carbon adsorption beds are respectively arranged in the first adsorption tower, the second adsorption tower and the third adsorption tower, first desorption pipelines are connected to the first adsorption tower, the second adsorption tower and the third adsorption tower, and the first desorption pipelines are connected to the desorption catalytic combustion device;
the desorption catalytic combustion device is connected with a mixed flow box, waste gas treated by the desorption catalytic combustion device enters the mixed flow box, a supplementary cooling fan is arranged on the mixed flow box, and the air outlet end of the mixed flow box is connected with the first adsorption tower, the second adsorption tower and the third adsorption tower through a third desorption pipeline;
the desorption catalytic combustion device comprises a heat exchanger connected with the first desorption pipeline, the heat exchanger is connected with a desorption fan through a second desorption pipeline, and the air outlet end of the heat exchanger is connected with a catalytic combustion purification tower.
Furthermore, the pretreatment device is a dry filter, the air outlet end of the dry filter is connected with the air inlet ends of the first adsorption tower, the second adsorption tower and the third adsorption tower through a first adsorption pipeline, the fan chimney device comprises an adsorption fan, the adsorption fan is connected with the air outlet ends of the first adsorption tower, the second adsorption tower and the third adsorption tower through a second adsorption pipeline, and the air outlet end of the adsorption fan is connected with a smoke exhaust chimney.
Further, the first adsorption tower, the second adsorption tower and the third adsorption tower are connected with a spraying system through spraying pipelines.
Furthermore, a ventilation pipeline penetrates through the heat exchanger, one end of the ventilation pipeline is connected with the mixed flow box, and the other end of the ventilation pipeline is connected with the smoke exhaust chimney.
Further, catalytic combustion purifying column include with be close to the zone of heating that desorption fan set up and be close to the catalytic combustion district that the mixed flow case set up, be provided with ceramic honeycomb's noble metal catalyst in the catalytic combustion district.
The embodiment of the utility model provides a have following advantage:
(1) the activated carbon adsorption bed for adsorbing organic waste gas can use the catalytic combustion purification tower to process the heat generated by the waste gas for desorption and regeneration, the desorbed gas is sent to the catalytic combustion purification tower for combustion and purification, the purified gas is subjected to heat storage and energy recovery through the heat exchanger, no additional energy is needed, the operation cost is low, and the energy-saving effect is obvious;
(2) the utility model discloses a desorption pipeline and valve control organic waste gas carry out circulation treatment at adsorption equipment and desorption catalytic combustion device, have not only improved the utilization ratio of the energy, reduce calorific loss, have effectively improved organic waste gas's purifying effect moreover.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;
fig. 2 is a schematic view of an internal circulation structure of an adsorption device and a desorption catalytic combustion device according to an embodiment of the present invention;
in the figure:
1-a first adsorption column; 2-a second adsorption column; 3-a third adsorption column; 4-activated carbon adsorption bed; 5-a first desorption conduit; 6-mixed flow box; 7-supplement air cooler; 8-a third desorption conduit; 9-a heat exchanger; 10-a second desorption conduit; 11-a desorption fan; 12-a catalytic combustion purification tower; 13-a dry filter; 14-a first adsorption conduit; 15-an adsorption fan; 16-a second adsorption conduit; 17-smoke exhaust chimney; 18-a spray pipe; 19-ventilation duct.
Detailed Description
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are also considered to be the scope of the present invention without substantial changes in the technical content.
As shown in fig. 1 and 2, the utility model provides an organic waste gas adsorbs desorption catalytic combustion system, include that the flow direction along organic waste gas has set gradually preprocessing device, adsorption equipment, desorption catalytic combustion device and fan chimney device, be connected with the pipeline between preprocessing device, adsorption equipment, desorption catalytic combustion device and fan chimney device, be connected with the valve on the pipeline, the switch board of valve electric connection system, through the automatic operation of switch board realization system, easy operation is convenient.
A pretreatment device is arranged at the air inlet end of the adsorption device, the pretreatment device is a dry filter 13, the air outlet end of the dry filter 13 is connected with the air inlet end of the adsorption device through a first adsorption pipeline 14, particulate matters in organic waste gas are removed through the dry filter 13, the content of the particulate matters in the discharged gas is reduced, a fan chimney device is arranged at the air outlet end of the adsorption device, the fan chimney device comprises an adsorption fan 15, the adsorption fan 15 is connected with the air outlet end of the adsorption device through a second adsorption pipeline 16, the air outlet end of the adsorption fan 15 is connected with a smoke exhaust chimney 17, the air pressure in the adsorption device is reduced through the adsorption fan 15, so that the waste gas enters the adsorption device through the pretreatment device to be purified, a waste gas monitoring device can be arranged on the second adsorption pipeline 16, when the gas treated by the adsorption device reaches the emission standard, the gas can be discharged directly through the chimney 17 by the adsorption fan 15.
The utility model discloses a dry filter 13 forms for the filter combination of different performance, through setting up the filter of different performance, detaches dust and water smoke in the waste gas, also holds back the dust entrapment through the filter material to the cleanliness factor requirement of the assurance volume of sending into the amount of wind. The filtering material used by the dust collector is fiber with a smaller diameter, so that the air flow can smoothly pass through the dust collector, and dust particles can be effectively collected. Pressure drop gauges are installed on each stage of filter to prompt the operator to replace the filter in a timely manner.
Wherein, the primary filter adopts a primary filter which is mainly used for filtering dust particles with the particle size of more than 5 mu m. The primary filter in the prior art has three types of plate type, folding type and bag type, the outer frame material comprises a paper frame, an aluminum frame and a galvanized iron frame, the filtering material comprises non-woven fabric, nylon net, active carbon filtering material, metal mesh net and the like, and the protective net comprises a double-sided plastic-sprayed wire net and a double-sided galvanized wire net. The secondary filter adopts a bag type medium-efficiency filter, and the unique bag type structure ensures that the whole bag is filled with air flow uniformly, and the unique hot melting technology can prevent the over extrusion or leakage between the bags, so that the resistance is reduced, the dust holding capacity is maximized, the bag support grid with the reinforcing function can prevent the filter from shrinking or bending deformation under the extremely poor working environment, and the filtering effect of the dry filter 13 is improved.
Through the action of the adsorption fan 15, the waste gas enters the adsorption device for purification treatment after being pretreated by the dry filter 13, the adsorption device of the utility model comprises a first adsorption tower 1, a second adsorption tower 2 and a third adsorption tower 3 which work alternately, cellular active carbon adsorption beds 4 are respectively arranged in the first adsorption tower 1, the second adsorption tower 2 and the third adsorption tower 3, the active carbon adsorption beds 4 of the utility model work alternately by switching the pneumatic valves on the first adsorption pipelines 14 connected with the first adsorption tower 1, the second adsorption tower 2 and the third adsorption tower 3, after the gas enters the adsorption towers, the organic substances in the gas are adsorbed by the active carbon adsorption beds 4 and stop on the surface of the active carbon, thereby purifying the gas, and discharging the purified gas reaching the standard to the atmosphere through the adsorption fan 15.
After a period of time, when the activated carbon adsorption bed 4 reaches a saturated state, the adsorption is stopped, the organic matter is concentrated in the activated carbon, the adsorption fan 15 is stopped to open the valve of the first desorption pipeline 5 connected with the first adsorption tower 1, the second adsorption tower 2 and the third adsorption tower 3, and the waste gas is introduced into the desorption catalytic combustion device through the desorption fan 11 to be purified.
The utility model discloses a first adsorption tower 1, be connected with first desorption pipeline 5 on second adsorption tower 2 and the third adsorption tower 3, first desorption pipeline 5 is connected with desorption catalytic combustion device, desorption catalytic combustion device includes the heat exchanger 9 that is connected with first desorption pipeline 5, heat exchanger 9 is connected with desorption fan 11 through second desorption pipeline 10, heat exchanger 9 air-out end is connected with catalytic combustion purifying tower 12, desorption catalytic combustion device is connected with mixed flow case 6, the waste gas after handling via desorption catalytic combustion device gets into mixed flow case 6, be provided with tonifying cold fan 7 on the mixed flow case 6, the air-out end of mixed flow case 6 is through third desorption pipeline 8 and first adsorption tower 1, second adsorption tower 2 and third adsorption tower 3 are connected.
After activated carbon adsorption bed 4 adsorbs saturation, can start desorption fan 11 and desorb this activated carbon adsorption bed 4, desorption gas at first gets into desorption catalytic combustion device's heat exchanger 9 through first desorption pipeline 5, then get into catalytic combustion purifying column 12 under desorption fan 11's effect, at first the zone of heating through catalytic combustion purifying column 12, under electric heater's effect, make gas temperature improve to about 300 ℃, the catalytic combustion district is crossed to the rethread, the catalytic combustion is carried out to organic matter under the effect of catalyst, organic gas is decomposed into CO2And H2And O, simultaneously releasing a large amount of heat, further increasing the temperature of the gas, and enabling the high-temperature gas to pass through the heat exchanger 9 again to exchange heat with the incoming cold air so as to recover a part of heat.
The gas coming out of the heat exchanger 9 is divided into two parts: the part gets into activated carbon adsorption bed 4 and carries out the desorption to the activated carbon, when desorption temperature was too high, can start tonifying cold fan 7 and carry out the cooling and reduce gas temperature, make desorption gas temperature stabilize in a suitable within range, when utilizing the energy that releases to get into activated carbon adsorption bed 4 desorption, the heating device of catalytic combustion purifying column 12 stopped work completely this moment, organic waste gas maintains the spontaneous combustion in the catalytic combustion district, tail gas regeneration, the circulation goes on, until the organic matter is totally from the inside separation of activated carbon, decompose to the catalytic chamber. The waste heat is recovered by the heat exchanger 9, so that the next heating and waste heat are convenient, the energy recovery efficiency is high, the energy consumption is low, the activated carbon is regenerated, the organic matters are subjected to catalytic decomposition treatment, the ignition temperature is low, the energy consumption is low, the combustion is easy to be stable, and even the oxidation reaction can be completed without external heat transfer after the ignition temperature is reached.
The other part is directly emptied, a ventilating duct 19 penetrates through the heat exchanger 9, one end of the ventilating duct 19 is connected with the mixed flow box 6, the other end of the ventilating duct 19 is connected with the smoke exhaust chimney 17, the treated waste gas is exhausted along the smoke exhaust chimney 17 by wrapping the ventilating duct 19, and the ventilating duct 19 penetrates through the heat exchanger 9, so that heat exchange can be performed on cold air entering the heat exchanger 9, the energy utilization rate is improved, and the temperature of the exhausted gas is effectively reduced.
The first adsorption tower 1, the second adsorption tower 2 and the third adsorption tower 3 are connected with a spraying system through a spraying pipeline 18, but the temperature in the activated carbon adsorption bed 4 exceeds an alarm value, a fire emergency automatic spraying system and a nitrogen fire-fighting system are automatically started, and the spraying system is a fire-fighting spraying system used in the prior art, so that the system safety is ensured.
The utility model discloses an be provided with the noble metal catalyst of ceramic honeycomb formula in the catalytic combustion district, the resistance is little, just can normal operating with low pressure fan, and not only power consumptive few and the noise is low, and desorption catalytic combustion device's the amount of wind is the ten minutes of the waste gas source amount of wind, and heating power holding time is about 1 hour simultaneously, the energy saving.
The utility model discloses a desorption pipeline and valve control organic waste gas carry out circulation treatment at adsorption equipment and desorption catalytic combustion device, have not only improved the utilization ratio of the energy, reduce calorific loss, have effectively improved organic waste gas's purifying effect moreover.
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (5)
1. The utility model provides an organic waste gas adsorbs desorption catalytic combustion system, includes and follows organic waste gas's flow direction has set gradually preprocessing device, adsorption equipment, desorption catalytic combustion device and fan chimney device, its characterized in that:
the pretreatment device is arranged at the air inlet end of the adsorption device, and the fan chimney device is arranged at the air outlet end of the adsorption device;
the adsorption device comprises a first adsorption tower (1), a second adsorption tower (2) and a third adsorption tower (3) which work alternately, wherein honeycomb-shaped activated carbon adsorption beds (4) are respectively arranged in the first adsorption tower (1), the second adsorption tower (2) and the third adsorption tower (3), a first desorption pipeline (5) is connected to the first adsorption tower (1), the second adsorption tower (2) and the third adsorption tower (3), and the first desorption pipeline (5) is connected with the desorption catalytic combustion device;
the desorption catalytic combustion device is connected with a mixed flow box (6), waste gas treated by the desorption catalytic combustion device enters the mixed flow box (6), an air supplement fan (7) is arranged on the mixed flow box (6), and the air outlet end of the mixed flow box (6) is connected with the first adsorption tower (1), the second adsorption tower (2) and the third adsorption tower (3) through a third desorption pipeline (8);
the desorption catalytic combustion device comprises a heat exchanger (9) connected with the first desorption pipeline (5), the heat exchanger (9) is connected with a desorption fan (11) through a second desorption pipeline (10), and the air outlet end of the heat exchanger (9) is connected with a catalytic combustion purification tower (12).
2. The organic waste gas adsorption and desorption catalytic combustion system according to claim 1, wherein the pretreatment device is a dry filter (13), the gas outlet end of the dry filter (13) is connected with the gas inlet ends of the first adsorption tower (1), the second adsorption tower (2) and the third adsorption tower (3) through a first adsorption pipeline (14), the fan and chimney device comprises an adsorption fan (15), the adsorption fan (15) is connected with the gas outlet ends of the first adsorption tower (1), the second adsorption tower (2) and the third adsorption tower (3) through a second adsorption pipeline (16), and the gas outlet end of the adsorption fan (15) is connected with a smoke exhaust chimney (17).
3. The organic waste gas adsorption and desorption catalytic combustion system according to claim 1, wherein the first adsorption tower (1), the second adsorption tower (2) and the third adsorption tower (3) are connected with a spraying system through a spraying pipeline (18).
4. The organic waste gas adsorption and desorption catalytic combustion system according to claim 2, wherein a ventilation duct (19) penetrates through the heat exchanger (9), one end of the ventilation duct (19) is connected with the mixed flow box (6), and the other end of the ventilation duct (19) is connected with the smoke exhaust chimney (17).
5. The organic waste gas adsorption and desorption catalytic combustion system according to claim 1, wherein the catalytic combustion purification tower (12) comprises a heating zone arranged close to the desorption fan (11) and a catalytic combustion zone arranged close to the mixed flow box (6), and a ceramic honeycomb type precious metal catalyst is arranged in the catalytic combustion zone.
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| CN201921513853.XU CN210699424U (en) | 2019-09-11 | 2019-09-11 | Organic waste gas adsorbs desorption catalytic combustion system |
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| CN201921513853.XU CN210699424U (en) | 2019-09-11 | 2019-09-11 | Organic waste gas adsorbs desorption catalytic combustion system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112044180A (en) * | 2020-09-15 | 2020-12-08 | 广州华科环保工程有限公司 | Organic waste gas catalytic combustion treatment system and method |
| CN113975929A (en) * | 2021-10-26 | 2022-01-28 | 中国科学院力学研究所 | Method for removing ammonia from tail gas in production process of high-tower compound fertilizer |
| CN115382344A (en) * | 2022-07-21 | 2022-11-25 | 宁夏宁杰橡胶再生资源循环利用科技有限公司 | Rubber flue gas treatment system |
| CN115445376A (en) * | 2022-10-19 | 2022-12-09 | 艾德旺斯环保科技南通有限公司 | Activated carbon catalytic combustion waste gas purification device and method thereof |
| CN117398803A (en) * | 2023-11-23 | 2024-01-16 | 广州点蓝环保设备有限公司 | Flue gas and waste gas purification system for enameled wire industry and application method of flue gas and waste gas purification system |
-
2019
- 2019-09-11 CN CN201921513853.XU patent/CN210699424U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112044180A (en) * | 2020-09-15 | 2020-12-08 | 广州华科环保工程有限公司 | Organic waste gas catalytic combustion treatment system and method |
| CN113975929A (en) * | 2021-10-26 | 2022-01-28 | 中国科学院力学研究所 | Method for removing ammonia from tail gas in production process of high-tower compound fertilizer |
| CN115382344A (en) * | 2022-07-21 | 2022-11-25 | 宁夏宁杰橡胶再生资源循环利用科技有限公司 | Rubber flue gas treatment system |
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