CN214345391U - Catalytic combustion exhaust treatment device - Google Patents
Catalytic combustion exhaust treatment device Download PDFInfo
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- CN214345391U CN214345391U CN202022130551.3U CN202022130551U CN214345391U CN 214345391 U CN214345391 U CN 214345391U CN 202022130551 U CN202022130551 U CN 202022130551U CN 214345391 U CN214345391 U CN 214345391U
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Abstract
The utility model provides a catalytic combustion exhaust treatment device relates to exhaust-gas treatment technical field. The method comprises the following steps: the waste heat recovery device and the waste gas connecting pipeline are arranged below the adsorption bed, the desorption air pipe and the adsorption air pipe are arranged above the adsorption bed, one end of the adsorption air pipe is connected with the discharging device, the discharging device is provided with the dust removing device, the waste gas connecting pipeline is provided with the filtering device, and the cooling device is arranged beside the filtering device; the practicability and the safety are higher, the waste heat is fully utilized, and the energy is saved.
Description
Technical Field
The utility model relates to a waste gas treatment technical field particularly, relates to a catalytic combustion exhaust treatment device.
Background
Volatile Organic Compounds (VOCs) are a class of highly toxic and severely polluting chemicals. At present, the pollution problem of VOCs is increasingly highly emphasized by various countries, and the strict emission standard of various organic pollutants in the air is regulated by the comprehensive emission standard of atmospheric pollutants issued by China. At present, the pollution control methods of VOCs at home and abroad mainly comprise an adsorption method, an absorption method, a biological treatment technology, a membrane separation technology, a direct combustion method, a catalytic combustion method and the like. The catalytic combustion method is an efficient clean combustion technology, and mainly utilizes a catalyst to enable organic waste gas to be fully combusted at a lower temperature. Catalytic combustion has significant advantages over other treatment technologies: the ignition temperature is low, the energy consumption is low, the treatment efficiency is high, no secondary pollution is caused, and the like, so that the method becomes one of the VOCs organic waste gas treatment methods with wide prospects. The high-efficiency catalytic combustion catalyst is the key core of the catalytic combustion technology, and the catalyst taking the massive carrier as the framework matrix is called as a regular structure catalyst and is also called as an integral catalyst. Due to the special pore channel structure, the catalyst improves the material transfer on the catalytic reaction bed layer, improves the catalytic efficiency, reduces the pressure and the operation cost, and is more and more widely applied to the heterogeneous catalytic reaction of petrochemical industry, fine chemical industry and the like. The RCO catalytic combustion technology for organic waste gas is widely applied to treatment of VOCs in Japan, America and Western Europe, process equipment is mature, related technical standards and use specifications are complete, and some large companies have own enterprise standards and have detailed regulations on process design, catalyst performance requirements, reactor manufacturing, engineering control measures and the like. Different combustion process combinations form four basic combustion process modes: catalytic combustion (heat exchange), direct combustion (heat exchange), regenerative catalytic combustion (RCO), and regenerative combustion (RTO). On the basis, the modes of runner enrichment combustion, ceramic filters and the like are formed. The catalytic combustion technology of RCO organic waste gas means that under the action of catalyst, the hydrocarbon in the organic waste gas is quickly oxidized into water and carbon dioxide under the condition of low temperature, so as to attain the goal of thorough treatment.
The catalytic purification is a typical gas-solid phase catalytic reaction, and the essence of the catalytic purification is deep oxidation in which active oxygen participates. In the catalytic purification process, the catalyst has the function of reducing activation energy, and meanwhile, the surface of the catalyst has an adsorption function, so that reactant molecules are enriched on the surface, the reaction rate is improved, and the reaction is accelerated; the organic waste gas can be flameless combusted under the condition of lower ignition temperature by the aid of the catalyst, and is oxidized and decomposed into CO2 and H2O, and simultaneously, a large amount of heat energy is released, so that the method for removing harmful substances in the waste gas is achieved. In the process of catalytic purification of the exhaust gas, the exhaust gas is sent to a heat exchanger through a pipeline by a fan, and the exhaust gas is heated to the initial temperature required by catalytic combustion. The preheated exhaust gas is combusted by passing through the catalyst layer. The initial temperature of the catalytic combustion method exhaust gas combustion is about 120-200 ℃ due to the action of the catalyst, the combustion temperature is greatly lower than that of the (RTO) direct combustion method combustion temperature of 650-800 ℃, the safety coefficient is greatly improved, and the high-temperature gas enters the heat exchanger again, is subjected to heat exchange, and is finally discharged into the atmosphere at a lower temperature through the fan.
However, the catalytic combustion waste gas treatment device has certain dangerousness, when the concentration and the temperature of organic waste gas or dust-containing gas in the treatment device reach certain limit values, explosion can occur, so that the property loss of personnel is caused, the heat generated in the catalytic reaction process is large, the cooling is slow, the waiting time is long, the efficiency is influenced, and the heat is easily transferred to the outer wall of the adsorption bed to cause scald; the treated gas that is removed may not be up to standard.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a catalytic combustion exhaust treatment device, its practicality and security are higher, and waste heat utilization is abundant, has saved the energy.
The embodiment of the utility model is realized like this:
the embodiment of the application provides a catalytic combustion exhaust treatment device, and it includes the adsorption bed, and above-mentioned adsorption bed below is provided with waste heat recovery device and waste gas connecting tube, and above-mentioned adsorption bed top is provided with the desorption tuber pipe and adsorbs the tuber pipe, and the one end of above-mentioned absorption tuber pipe is connected with discharging equipment, and above-mentioned discharging equipment is provided with dust collector, and above-mentioned waste gas connecting tube is provided with filter equipment, and above-mentioned filter equipment is provided with cooling device.
The utility model discloses an in some embodiments, above-mentioned waste heat recovery device includes the waste heat recovery pipeline, and above-mentioned waste heat recovery pipe connection is in the below of above-mentioned adsorption bed, and above-mentioned waste heat recovery pipeline is provided with the desorption valve with the junction of above-mentioned adsorption bed, and the one end of above-mentioned waste heat recovery pipeline is provided with the burning catalytic furnace, and the side of above-mentioned burning catalytic furnace is connected with desorption fan, is provided with the spark arrester between above-mentioned desorption fan and the above-mentioned burning catalytic furnace.
The utility model discloses an in some embodiments, above-mentioned desorption fan is connected with air mixing box, and above-mentioned air mixing box's below is connected with bright fan.
In some embodiments of the present invention, the above discharging device includes an exhaust fan and a chimney, the above chimney is disposed on the above exhaust fan, the above air mixing box is connected to the above chimney, and the above chimney is provided with a waste gas concentration detecting device.
In some embodiments of the present invention, the filtering device includes a dry filter, the dry filter is disposed at one end of the exhaust gas connecting pipe, the exhaust gas connecting pipe is connected below the adsorption bed, and an exhaust valve is disposed at a connection position of the exhaust gas connecting pipe and the adsorption bed.
The utility model discloses an in some embodiments, above-mentioned dust collector includes dust exhausting fan, and above-mentioned dust exhausting fan sets up in the top of above-mentioned chimney.
The utility model discloses an in some embodiments, above-mentioned desorption tuber pipe is connected in the top of above-mentioned adsorption bed, and above-mentioned desorption tuber pipe is provided with the desorption valve with the junction of above-mentioned adsorption bed, and the one end of above-mentioned desorption tuber pipe links to each other with above-mentioned air mixing box.
The utility model discloses an in some embodiments, above-mentioned absorption tuber pipe is connected in the top of above-mentioned adsorption bed, and the above-mentioned junction that adsorbs the tuber pipe and above-mentioned adsorption bed is provided with the waste gas valve door, and the one end of above-mentioned absorption tuber pipe is connected in above-mentioned exhaust fan.
In some embodiments of the present invention, the cooling device includes a nitrogen generator set, and the nitrogen generator set is disposed outside the dry filter.
The utility model discloses an in some embodiments, be provided with temperature sensor in the above-mentioned adsorption bed, above-mentioned adsorption bed is bilayer structure, is provided with thermal-insulated portion between the above-mentioned bilayer structure.
Compared with the prior art, the embodiment of the utility model has following advantage or beneficial effect at least:
firstly, most of the existing catalytic combustion waste gas treatment devices generate large heat, slow cooling, long waiting time and influence efficiency in the catalytic reaction process. The utility model discloses a cooling device cooperation is used for cooling down rapidly behind the catalytic desorption waste gas, improve equipment security and availability factor.
It is two, perhaps not up to standard through catalytic treatment back combustion gas, the utility model discloses a dust collector removes dust to the waste gas through handling before discharging for it is up to standard to discharge.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural view of a catalytic combustion exhaust gas treatment device according to an embodiment of the present invention;
FIG. 2 is a schematic view of the operation flow of a catalytic combustion exhaust gas treatment device according to an embodiment of the present invention;
icon: 100-adsorption bed, 101-waste gas connecting pipeline, 102-waste heat recovery pipeline, 103-adsorption air pipe, 104-desorption air pipe, 105-waste gas valve, 106-desorption valve, 107-flame arrester, 110-dry filter, 120-catalytic combustion furnace, 130-desorption fan, 140-fresh fan, 150-air mixing box, 160-discharging device, 161-exhaust fan, 162-chimney, 163-dedusting fan and 200-nitrogen making unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the products of the present invention are usually placed when using, the description is only for convenience of description and simplification, but the indication or suggestion that the device or element to which the description refers must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be interpreted as a limitation of the present invention.
In the description of the embodiments of the present invention, it should be further noted that unless explicitly stated or limited otherwise, the terms "disposed," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Examples
Referring to fig. 1, fig. 1 is a schematic structural diagram of a catalytic combustion exhaust gas treatment device, an embodiment of the present application provides a catalytic combustion exhaust gas treatment device, which includes an adsorption bed 100, a waste heat recovery device and an exhaust gas connection pipeline 101 are disposed below the adsorption bed 100, a desorption air pipe 104 and an adsorption air pipe 103 are disposed above the adsorption bed 100, one end of the adsorption air pipe 103 is connected to a discharge device 160, the discharge device 160 is provided with a dust removal device, the exhaust gas connection pipeline 101 is provided with a filter device, and the filter device is provided with a cooling device.
In some embodiments of the present invention, the adsorption bed 100 is the conventional activated carbon adsorption bed 100, the outer wall of the adsorption bed 100 is a double-layer structure, and the heat insulating material is filled between the double-layer structure to prevent scalding. Waste gas connecting tube 101 passes through waste gas valve 105 and connects in the below of adsorption bed 100, waste gas connecting tube 101 one end kneck connects filter equipment and filters, in this embodiment, filter equipment is dry filter 110, because contain dust and viscidity in the waste gas, if directly get into the space that active carbon adsorption system can block up active carbon, lead to adsorption efficiency to reduce or even become invalid, simultaneously, because active carbon life is than longer (under the condition that has analytic equipment), in order to ensure the adsorption effect of active carbon, adopt dry filter 110 to get rid of dust and viscidity before waste gas gets into active carbon adsorption bed 100 usually. A temperature sensor (not shown in the drawings) is provided in the adsorption bed 100 to control the temperature in the adsorption bed 100.
The desorption air pipe 104 is connected above the adsorption bed 100 through the desorption valve 106, one end of the desorption air pipe 104 is connected into the air mixing box 150, the air mixing box 150 is connected into a pipeline to the chimney 162, the air mixing box 150 is mainly used for mixing cold air and hot air or fresh air, the fresh air fan 140 is arranged below the air mixing box 150, the fresh air fan 140 is effective air purification equipment and can enable air in the pipe to circulate, on one hand, dirty air in the pipe is discharged, on the other hand, fresh air outside the pipe is sterilized, disinfected, filtered and the like and then is input into the pipe, fresh and clean air in the pipe is enabled to be fresh and clean air at every moment, and the product is mainly used for ventilation, cooling, dedusting and peculiar smell removal and is suitable for waste gas treatment of various industries. The side of the air mixing box 150 is connected with a desorption fan 130, the desorption fan 130 is connected with the catalytic combustion furnace 120, and a flame arrester 107 is arranged between the desorption fan 130 and the catalytic combustion furnace 120. Flame arrestors 107 are safety devices used to prevent the spread of a flame of flammable gases and flammable liquid vapors, and are typically installed in pipes that carry flammable gases, and if flammable gases are ignited, the gas flame will propagate throughout the piping network. The waste heat recovery device comprises a waste heat recovery pipeline 102, and the waste heat recovery pipeline 102 is connected below the adsorption bed 100 through a desorption valve 106.
Referring to fig. 2, fig. 2 is a schematic diagram of a working flow of a catalytic combustion exhaust gas treatment device, which is designed according to two basic principles of adsorption (high efficiency) and catalytic combustion (energy saving), and adopts a dual-gas path continuous operation, one catalytic combustion furnace 120 and a plurality of adsorption beds 100 for alternate use. Firstly, adsorbing the organic waste gas by using active carbon, stopping adsorption when the organic waste gas is saturated, and then desorbing the organic matters from the active carbon by using hot air flow to regenerate the active carbon; the desorbed organic substances are concentrated (the concentration is increased by tens of times compared with the original concentration) and sent to the catalytic combustion furnace 120 for catalytic combustion to carbon dioxide and steam to be discharged. When the concentration of the organic waste gas reaches 2000mg/m or more, the organic waste gas can maintain spontaneous combustion in the catalytic combustion furnace 120 without external heating. Thus, the heat energy required by combustion and adsorption can be met, and the purpose of energy conservation is achieved. The regenerated one can enter the next adsorption; in the desorption, the purification operation may be performed using another adsorption bed 100, which is suitable for both continuous operation and intermittent operation. The catalytic combustion is to realize the complete oxidation of organic matters by means of a catalyst at low temperature (120-200 ℃), so the catalytic combustion is simple and safe to operate, has high purification efficiency, and is widely applied to the fields of organic waste gas purification, in particular to the field of organic waste gas purification with high recovery value and the like. Different exhaust occasions and different waste gases have different catalytic combustion waste gas treatment process flows. However, whatever process flow is adopted, the method consists of the following process units: waste gas pretreatment, preheating device, catalytic combustion device.
The working principle of the catalytic combustion device is as follows:
the organic waste gas adsorption purification process comprises the following steps: the organic waste gas may contain a small amount of dust, and the organic waste gas enters the adsorption bed 100 to be pretreated, otherwise activated carbon micropores are blocked, and the adsorption effect is affected, wherein the pretreatment equipment is a dry filter 110 and is divided into two stages of filtration (G4 out effect + F5 middle effect). The exhaust gas is firstly dedusted by the dry filter 110 and then uniformly passes through the activated carbon adsorption bed 100, the pollutants in the exhaust gas are adsorbed on the surface of the activated carbon, and the treated clean gas is discharged at high altitude through the exhaust fan 161 and the chimney 162.
Desorption regeneration and catalytic combustion process: when the adsorption reaches saturation, regeneration is performed by switching the waste gas valve 105/desorption valve 106. Hot air is supplied to the adsorption bed 100 to heat the activated carbon. The organic gas with higher thermal resolution ratio of the activated carbon is introduced into the combustion bed (i.e. the adsorption bed 100) by the desorption fan 130, and the waste gas is catalyzed and combusted to generate carbon dioxide, water and other harmless gases and partial heat. The heat is recycled through the waste heat recovery line 102 for desorption and regeneration of the activated carbon in the adsorbent bed 100. The whole set of adsorption and catalytic combustion process is automatically controlled by a PLC (programmable logic controller).
The utility model discloses cooperation cooling device uses, and in this embodiment, cooling device is nitrogen gas unit for can cool down rapidly after the catalytic desorption waste gas, improve equipment security and availability factor.
To sum up, the embodiment of the utility model provides a catalytic combustion exhaust treatment device has following advantage and beneficial effect at least:
the utility model provides a catalytic combustion exhaust treatment device, its includes adsorption bed 100, above-mentioned adsorption bed 100 below is provided with waste heat recovery device and waste gas connecting line 101, above-mentioned adsorption bed 100 top is provided with desorption tuber pipe 104 and adsorbs tuber pipe 103, the one end of above-mentioned adsorption tuber pipe 103 is connected with discharging equipment 160, above-mentioned discharging equipment 160 is provided with dust collector, above-mentioned waste gas connecting line 101 is provided with filter equipment, above-mentioned filter equipment is provided with cooling device. Firstly, most of the existing catalytic combustion waste gas treatment devices generate large heat, slow cooling and long waiting time in the catalytic reaction process, and the efficiency is influenced. The utility model discloses a cooling device cooperation is used for cooling down rapidly behind the catalytic desorption waste gas, improve equipment security and availability factor. Gas probably is not up to standard after catalytic treatment, the utility model discloses a dust collector removes dust to the waste gas through handling before discharging for it is up to standard to discharge.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a catalytic combustion exhaust treatment device, its characterized in that, includes the adsorption bed, the adsorption bed below is provided with waste heat recovery device and waste gas connecting line, the adsorption bed top is provided with desorption tuber pipe and adsorption tuber pipe, the one end of adsorption tuber pipe is connected with discharging equipment, discharging equipment is provided with dust collector, waste gas connecting line is provided with filter equipment, filter equipment is provided with cooling device.
2. The catalytic combustion exhaust gas treatment device according to claim 1, wherein the waste heat recovery device comprises a waste heat recovery pipeline, the waste heat recovery pipeline is connected below the adsorption bed, a desorption valve is arranged at the joint of the waste heat recovery pipeline and the adsorption bed, a combustion catalytic furnace is arranged at one end of the waste heat recovery pipeline, a desorption fan is connected to the side of the combustion catalytic furnace, and a flame arrester is arranged between the desorption fan and the combustion catalytic furnace.
3. The catalytic combustion exhaust gas treatment device according to claim 2, wherein the desorption fan is connected to a wind mixing box, and a fresh air fan is connected to a lower portion of the wind mixing box.
4. The catalytic combustion exhaust gas treatment device according to claim 3, wherein the exhaust device includes an exhaust fan and a chimney, the chimney is disposed on the exhaust fan, the air mixing box is connected to the chimney, and an exhaust gas concentration detection device is disposed in the chimney.
5. The catalytic combustion exhaust gas treatment device according to claim 4, wherein the filter device includes a dry filter provided at one end of the exhaust gas connection pipe connected below the adsorption bed, and an exhaust valve is provided at a connection of the exhaust gas connection pipe and the adsorption bed.
6. The catalytic combustion exhaust gas treatment device of claim 5, wherein the dust removal device comprises a dust removal fan disposed at a top of the chimney.
7. The catalytic combustion exhaust gas treatment device according to claim 6, wherein the desorption air pipe is connected above the adsorption bed, a desorption valve is arranged at the joint of the desorption air pipe and the adsorption bed, and one end of the desorption air pipe is connected with the air mixing box.
8. The catalytic combustion exhaust gas treatment device according to claim 7, wherein the adsorption air duct is connected above the adsorption bed, an exhaust valve is provided at a connection position of the adsorption air duct and the adsorption bed, and one end of the adsorption air duct is connected to the exhaust fan.
9. The catalytic combustion exhaust gas treatment device according to claim 8, wherein the cooling device includes a nitrogen generator set that is disposed outside the dry filter.
10. The catalytic combustion exhaust gas treatment device according to any one of claims 1 to 9, wherein a temperature sensor is provided in the adsorption bed, the adsorption bed has a double-layer structure, and a heat insulating portion is provided between the double-layer structure.
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| CN202022130551.3U CN214345391U (en) | 2020-09-24 | 2020-09-24 | Catalytic combustion exhaust treatment device |
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| CN202022130551.3U CN214345391U (en) | 2020-09-24 | 2020-09-24 | Catalytic combustion exhaust treatment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116951998A (en) * | 2023-09-20 | 2023-10-27 | 佛山市天禄智能装备科技有限公司 | Kiln with VOCs waste gas catalytic combustion processing system |
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2020
- 2020-09-24 CN CN202022130551.3U patent/CN214345391U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116951998A (en) * | 2023-09-20 | 2023-10-27 | 佛山市天禄智能装备科技有限公司 | Kiln with VOCs waste gas catalytic combustion processing system |
| CN116951998B (en) * | 2023-09-20 | 2023-11-28 | 佛山市天禄智能装备科技有限公司 | Kiln with VOCs waste gas catalytic combustion processing system |
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