CN214233414U

CN214233414U - Waste gas treatment device

Info

Publication number: CN214233414U
Application number: CN202022525630.4U
Authority: CN
Inventors: 刘峰; 何润炳
Original assignee: Guangzhou Wheelhorse Asahi Aluminum Casting Co ltd
Current assignee: Guangzhou Wheelhorse Asahi Aluminum Casting Co ltd
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2021-09-21
Anticipated expiration: 2030-11-04

Abstract

The utility model discloses a waste gas treatment device, which comprises a waste gas inlet; the adsorption device comprises at least two adsorption modules, a first adsorption module and a second adsorption module, wherein each adsorption module comprises an adsorption container and a zeolite roller, and the adsorption container is provided with a first air inlet and a first air outlet; a combustion module comprising at least two combustion chambers; the gas outlet of the combustion module is connected with the circulating inlet of the circulating container, the circulating outlet of the circulating container is connected with the waste gas inlet, and the circulating container is provided with a sampling port which can be opened and closed. VOCs in the waste gas is adsorbed through the adsorption module, the waste gas is sent into each combustion chamber of the combustion module to be combusted simultaneously, and the combusted waste gas flows through the circulating container and then flows to the waste gas inlet again to be subjected to circulating treatment. The utility model discloses carry out endless repeated processing with waste gas, greatly reduced the VOCs content in the exhaust gas, in addition, adsorption module more than two has improved adsorption efficiency, and on the same way, combustion catalysis efficiency has also been improved to the combustion chamber more than two.

Description

Waste gas treatment device

Technical Field

The utility model relates to an exhaust treatment device in the technical field of exhaust treatment.

Background

In the conventional manufacturing industry, many manufacturing processes such as painting and the like generate VOCs (volatile organic compound exhaust gas) containing different components, the VOCs have unpleasant special odor, toxicity, irritation, teratogenicity and carcinogenicity, especially benzene, toluene, formaldehyde and the like cause great harm to human health, and in addition, the VOCs also have important influence on regional atmospheric ozone pollution and PM2.5 pollution. How to improve the treatment efficiency of VOCs to reduce the emission of VOCs becomes an important issue in environmental protection control.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a waste gas treatment device, can effectively reduce VOCs's emission.

According to an embodiment of the present invention, there is provided an exhaust gas treatment device, including an exhaust gas inlet; the adsorption device comprises at least two adsorption modules, a gas inlet and a waste gas outlet, wherein each adsorption module comprises an adsorption container and a zeolite roller positioned in the adsorption container, the adsorption container is provided with a first gas inlet and a first gas outlet, and the waste gas inlet is respectively connected with the two first gas inlets; the first gas outlet of each adsorption container is connected with a gas inlet of the combustion module through a pipeline, and the combustion module comprises at least two combustion chambers; the gas outlet of the combustion module is connected with the circulating inlet of the circulating container, the circulating outlet of the circulating container is connected with the waste gas inlet, and the circulating container is provided with a sampling port which can be opened and closed.

According to the utility model discloses an embodiment, furtherly, circulation entry is located the lower part of circulation container, circulation export reaches the sample connection all is located the upper portion of circulation container.

According to the utility model discloses an embodiment, furtherly, exhaust treatment device still includes filter module, two at least coating cloud filters of filter module, the coating cloud filter with adsorb the module one-to-one, the waste gas air inlet is through each the coating cloud filter is connected to correspondingly adsorb the module.

According to the utility model discloses an embodiment, furtherly, exhaust treatment device still includes preheating module, preheating module is used for preheating gas in the adsorption vessel.

According to the utility model discloses an embodiment, furtherly, preheat the module and include the adsorption heat exchanger, be equipped with first heat transfer passageway and the second heat transfer passageway of ability interconversion in the adsorption heat exchanger, combustion module's gas outlet with the entry linkage of first heat transfer passageway, the export of first heat transfer passageway with circulation entry linkage, adsorption vessel is equipped with second air inlet and second gas outlet, the second gas outlet with the entry linkage of second heat transfer passageway, the second air inlet with the exit linkage of second heat transfer passageway.

According to the utility model discloses an embodiment, furtherly, exhaust treatment device still includes combustion-supporting module, combustion-supporting module includes the air-blower, the export of air-blower with combustion module connects.

The utility model has the advantages that: VOCs in the waste gas is adsorbed through the adsorption module, the waste gas is sent into each combustion chamber of the combustion module to be combusted simultaneously, and the combusted waste gas flows through the circulating container and then flows to the waste gas inlet again to be subjected to circulating treatment. The utility model discloses carry out endless repeated processing with waste gas, greatly reduced the VOCs content in the exhaust gas, in addition, adsorption module more than two has improved adsorption efficiency, and on the same way, combustion catalysis efficiency has also been improved to the combustion chamber more than two.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.

Fig. 1 is a schematic diagram of the present invention.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1, the embodiment of the utility model provides an exhaust treatment device, including exhaust gas inlet 60, two at least adsorption module, combustion module 20 and circulation container 30, waste gas passes through exhaust gas inlet 60 and gets into each adsorption module respectively, each adsorption module carries out effectual absorption to the partial harmful substance in the VOCs waste gas, avoid the gaseous harmful substance of VOCs directly to enter combustion module 20, alleviate combustion module 20's burden, reduce the exhaust emission volume, in addition, can make adsorbing material regeneration use through desorption technology, practice thrift the cost. The adsorbed waste gas enters the combustion module 20 for catalytic combustion, thereby consuming toxic and harmful organic substances in the VOCs. The burnt gas enters the circulating container 30 and then enters the waste gas inlet 60 again through the circulating container 30, and the waste gas is subjected to adsorption and combustion for many times, so that the VOCs content in the finally exhausted waste gas can be greatly reduced, and the VOCs content in the waste gas generated by the coating process can be effectively reduced.

In some embodiments, the adsorption module includes an adsorption container 10, a zeolite roller 11, a roller motor and a zeolite roller 11, the zeolite roller 11 is located in the adsorption container 10, and the roller motor can drive the zeolite roller 11 to rotate, so as to increase the contact efficiency of the exhaust gas and the zeolite roller 11, thereby improving the adsorption efficiency. The adsorption container 10 is provided with a first air inlet 101 and a first air outlet 102, the waste gas inlet 60 is connected with the two first air inlets 101 through first fans respectively, and the first fans blow the waste gas into the adsorption container 10. In addition, because the number of the adsorption modules is more than two, a larger amount of waste gas can be treated simultaneously, and the waste gas treatment efficiency is improved.

In some embodiments, the combustion module 20 includes at least two combustion chambers 21, and the plurality of combustion chambers 21 simultaneously combust the exhaust gas, thereby improving the efficiency of exhaust gas consumption. The first air outlet 102 of each adsorption container 10 is connected with the air inlet of the combustion module 20 through a pipeline, a second fan is arranged on the pipeline, and the second fan is started to blow the waste gas in the adsorption container 10 into each combustion chamber 21. The air outlet of the combustion module 20 is connected to the circulation inlet 31 of the circulation vessel 30, the circulation outlet 32 of the circulation vessel 30 is connected to the exhaust gas inlet 60, and the combusted exhaust gas is accumulated in the circulation vessel 30 and can flow to the exhaust gas inlet 60 again for circulation, so as to completely consume the VOCs. Optionally, the circulation container 30 is provided with a closable sampling port 33, and the concentration of VOCs in the exhaust gas in the circulation container 30 can be analyzed by opening the sampling port 33, so as to determine whether the circulation treatment needs to be continued. In this embodiment, the circulation inlet 31 is located at the lower part of the circulation container 30, the circulation outlet 32 and the sampling port 33 are both located at the upper part of the circulation container 30, and the sampling port 33 is close to the circulation outlet 32, so that the mass of the exhaust gas sample taken out through the sampling port 33 is closer to the mass of the exhaust gas sample entering the next circulation. Of course, the circulation vessel is also provided with an exhaust gas outlet for removing all exhaust gas. Optionally, the circulation vessel 30 is a metal member to avoid corrosion of the high-temperature VOCs, and a lightning rod is provided outside the circulation vessel 30.

In some embodiments, the exhaust gas treatment device further comprises a filtering module, the filtering module comprises at least two paint mist filters 40, and the paint mist filters 40 can effectively remove the paint mist in the exhaust gas and prevent the paint mist from attaching to the adsorption module or the combustion module 20 to affect the efficiency of the exhaust gas treatment. The paint mist filters 40 correspond to the adsorption modules one to one, the exhaust gas inlet 60 is connected to the corresponding adsorption modules through the paint mist filters 40, and the first fan is arranged between the outlet of the paint mist filter 40 and the first air inlet 101 of the adsorption module.

In certain embodiments, the exhaust gas treatment device further comprises a preheating module for preheating the gas in the adsorber vessel 11, thereby reducing the amount of fuel required and increasing the efficiency with which VOCs are decomposed. The preheating module comprises an adsorption heat exchanger 50, a first heat exchange channel and a second heat exchange channel which can exchange heat with each other are arranged in the adsorption heat exchanger 50, the gas outlet of the combustion module 20 is connected with the inlet of the first heat exchange channel, the outlet of the first heat exchange channel is connected with the circulating inlet 31, the adsorption container 10 is provided with a second gas inlet 103 and a second gas outlet 104, the second gas outlet 104 is connected with the inlet of the second heat exchange channel, and the second gas inlet 103 is connected with the outlet of the second heat exchange channel. Specifically, after the combustion module 20 combusts the exhaust gas, the combusted exhaust gas flows through the first heat exchange channel of the adsorption heat exchanger 50 and then flows into the circulation container 30, meanwhile, the first gas outlet 102 of the adsorption container 10 is closed, and the second gas inlet 103 and the second gas outlet 104 are opened, so that the exhaust gas in the adsorption container 10 can flow through the second heat exchange channel and then flow back to the adsorption container 10, the high-temperature exhaust gas in the first heat exchange channel exchanges heat with the exhaust gas to be combusted in the second heat exchange channel, thereby not only improving the temperature of the exhaust gas to be combusted, saving the fuel, but also reducing the temperature of the exhaust gas discharged from the combustion module 20, avoiding the high-temperature exhaust gas from damaging the circulation container 30, and directly discharging or accessing to the next process without additional cooling operation.

In certain embodiments, the exhaust gas treatment device further comprises a combustion module comprising a blower, the outlet of which is connected to the combustion module 20. In this embodiment, the gas supply module supplies fuel, optionally natural gas, to each combustion chamber 21. The blower blows air into each combustion chamber 21 to enable the combustion of natural gas at high temperatures, thereby catalytically consuming the exhaust gases in the combustion module 20.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and substitutions without departing from the spirit of the invention.

Claims

1. An exhaust gas treatment device, comprising:

an exhaust gas inlet;

the adsorption device comprises at least two adsorption modules, a gas inlet and a waste gas outlet, wherein each adsorption module comprises an adsorption container and a zeolite roller positioned in the adsorption container, the adsorption container is provided with a first gas inlet and a first gas outlet, and the waste gas inlet is respectively connected with the two first gas inlets;

the first gas outlet of each adsorption container is connected with a gas inlet of the combustion module through a pipeline, and the combustion module comprises at least two combustion chambers;

the gas outlet of the combustion module is connected with the circulating inlet of the circulating container, the circulating outlet of the circulating container is connected with the waste gas inlet, and the circulating container is provided with a sampling port which can be opened and closed.

2. The exhaust gas treatment device according to claim 1, characterized in that: the circulation inlet is positioned at the lower part of the circulation container, and the circulation outlet and the sampling port are both positioned at the upper part of the circulation container.

3. The exhaust gas treatment device according to claim 1, characterized in that: the waste gas treatment device further comprises a filtering module, the filtering module comprises at least two paint mist filters, the paint mist filters correspond to the adsorption modules one to one, and the waste gas inlet is connected to the corresponding adsorption modules through the paint mist filters.

4. The exhaust gas treatment device according to claim 1, characterized in that: the waste gas treatment device also comprises a preheating module, and the preheating module is used for preheating gas in the adsorption container.

5. The exhaust gas treatment device according to claim 4, characterized in that: the preheating module comprises an adsorption heat exchanger, a first heat exchange channel and a second heat exchange channel which can exchange heat with each other are arranged in the adsorption heat exchanger, the gas outlet of the combustion module is connected with the inlet of the first heat exchange channel, the outlet of the first heat exchange channel is connected with the circulating inlet, the adsorption container is provided with a second gas inlet and a second gas outlet, the second gas outlet is connected with the inlet of the second heat exchange channel, and the second gas inlet is connected with the outlet of the second heat exchange channel.

6. The exhaust gas treatment device according to claim 1, characterized in that: the waste gas treatment device also comprises a combustion-supporting module, the combustion-supporting module comprises an air blower, and an outlet of the air blower is connected with the combustion module.