Zeolite rotating wheel adsorption concentration catalytic combustion device

Abstract

The utility model relates to the technical field of waste gas treatment, and discloses a zeolite rotating wheel adsorption concentration catalytic combustion device which comprises a frame, a zeolite rotating wheel concentration device, a desorption assembly, a recovery assembly and a cooling assembly, the zeolite rotating wheel concentration device is arranged on the frame, and the zeolite rotating wheel concentration device is sequentially divided into a desorption area, a cooling area and an adsorption area; the desorption assembly is arranged in a desorption area on the zeolite rotary concentration device, the recovery assembly comprises a gas-collecting hood and a continuous discharge monitoring system, the gas-collecting hood is communicated with an adsorption area of the zeolite rotary concentration device, and a detection probe of the continuous discharge monitoring system is located on the gas-collecting hood; through cooperation of the gas collecting hood, the continuous discharge monitoring system and the cooling assembly, when it is monitored that the discharged air is over-standard, switching is controlled through the external terminal controller, the air is guided from the cooling area to the adsorption area, automatic recovery of the over-standard air is achieved, and the effects of emergency treatment and convenient use are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of waste gas treatment, and in particular to a zeolite rotor adsorption concentration catalytic combustion device. Background Art

[0002] The zeolite wheel adsorption concentration catalytic combustion device removes volatile organic compounds (VOCs) from low-concentration, high-volume exhaust gas by introducing a desorption airflow to desorb organic matter adsorbed on the zeolite wheel, forming a small-flow, high-concentration exhaust gas that is introduced into a catalytic burner (CO) for incineration treatment to thoroughly decompose these high-concentration VOCs, thereby ensuring that the emitted gas meets environmental regulations.

[0003] In the prior art, the zeolite rotor molecular sieve is separated by an adsorption zone and a desorption zone. The zeolite rotor continuously rotates through the adsorption zone and the desorption zone, and a large flow of low-concentration exhaust gas enters the adsorption zone. The zeolite rotor adsorbs organic matter in the exhaust gas. The clean air after adsorption by the zeolite rotor will be directly discharged into the atmosphere.

[0004] However, in actual operation, the adsorption efficiency of the zeolite wheel may be affected by a variety of factors, including zeolite saturation, aging, mechanical fatigue, changes in operating conditions, etc. When the adsorption capacity of zeolite decreases, the concentration of emitted VOCs may increase, which may not meet the emission standards.

[0005] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0006] In order to solve the problem of substandard emissions due to decreased zeolite adsorption capacity, the present application provides a zeolite rotor adsorption concentration catalytic combustion device.

[0007] The zeolite rotor adsorption concentration catalytic combustion device provided in the present application adopts the following technical solution:

[0008] A zeolite rotary adsorption concentration catalytic combustion device, comprising a frame, a zeolite rotary concentration device, a desorption component, a recovery component and a cooling component;

[0009] The frame is used for supporting and installing the whole mechanism;

[0010] The zeolite rotary concentration device is arranged on a frame, and the zeolite rotary concentration device is sequentially divided into a desorption zone, a cooling zone, and an adsorption zone, and is used for adsorption and concentration of VOCs in the exhaust gas;

[0011] The desorption component is arranged in the desorption zone of the zeolite rotary concentration device, and is used to provide a hot air flow to the zeolite rotary concentration device, so as to realize thermal desorption treatment of VOCs on the zeolite rotary concentration device;

[0012] The recovery assembly includes an air collection hood and a continuous emission monitoring system. The air collection hood is connected to the adsorption area of ​​the zeolite rotary concentrator and is used to collect and discharge air after adsorption treatment by the zeolite rotary concentrator. The detection probe of the continuous emission monitoring system is located on the air collection hood and is used to monitor in real time whether the discharged air meets the standard.

[0013] The cooling component includes a cooling fan arranged in the cooling zone, and a cooling air inlet pipe is arranged on the cooling fan for providing airflow for the cooling fan to cool down the zeolite rotary concentrator. A three-way valve is arranged between the end of the cooling air inlet pipe and the air collecting hood for switching the exhaust direction of the air collecting hood so that when the air is unqualified, it can flow back to the zeolite rotary concentrator through the three-way valve and the cooling air inlet pipe for secondary treatment.

[0014] Preferably, the desorption component includes a desorption fan arranged in the desorption zone, the air inlet side of the desorption zone is provided with a heat exchange air inlet pipe for providing the hot air flow required for thermal desorption, and the air outlet side of the desorption zone is provided with a heat exchange combustion pipe for discharging concentrated exhaust gas.

[0015] Preferably, a catalytic burner is also provided on the frame, and the heat exchange combustion tube is connected to the catalytic burner for incinerating the concentrated VOCs.

[0016] Preferably, a transducer is also provided in the frame, the heat medium inlet of the transducer is connected to the catalytic burner, the heat exchange air inlet pipe is connected to the refrigerant outlet of the transducer, the refrigerant inlet of the transducer is connected to the desorption air inlet pipe, and the heat medium outlet of the transducer is connected to the air outlet pipe.

[0017] Preferably, the end of the three-way valve 1 is connected to an adsorption exhaust pipe, and a three-way valve 2 is further provided on the air outlet side of the cooling zone.

[0018] In summary, this application includes the following beneficial technical effects:

[0019] Through the coordinated use of the zeolite rotary concentrator, the recovery component and the cooling component, the air after the adsorption treatment by the zeolite rotary concentrator is collected through the gas collecting hood, and the air in the gas collecting hood is monitored in real time through the continuous emission monitoring system. When the VOCs concentration in the air is higher than the set value, the external terminal controller controls the continuous emission monitoring system and the switching state of the three-way valve 2, so that the gas collecting hood and the cooling air inlet pipe are connected, and the cooling area and the adsorption area are connected, the substandard air is mixed with the cooling air, the zeolite rotary concentrator is cooled and cooled, and the substandard air is re-entered into the adsorption area, so that the substandard air is recovered and treated, which can effectively prevent the substandard air from being discharged into the atmosphere; compared with the existing technology, it has the effects of emergency treatment and easy use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of a three-dimensional structure from a first-view perspective of an embodiment of the application;

[0021] Figure 2 is a schematic diagram of a second perspective stereoscopic structure of an embodiment of the application;

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure from a third perspective of an embodiment of the application.

[0023] Explanation of the reference numerals: 1. Frame; 2. Zeolite rotary concentration device; 3. Desorption assembly; 301. Desorption fan; 302. Heat exchange air inlet pipe; 303. Heat exchange combustion pipe; 4. Recovery assembly; 401. Three-way valve one; 402. Gas collecting hood; 403. Continuous emission monitoring system; 5. Catalytic burner; 501. Combustion chamber; 502. Heat exchange chamber; 6. Transducer; 7. Adsorption exhaust pipe; 8. Exhaust pipe; 9. Cooling assembly; 901. Cooling fan; 902. Cooling air inlet pipe; 903. Three-way valve two; 10. Desorption air inlet pipe; 11. Incineration exhaust pipe. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1-3 This application is described in further detail.

[0025] The present application discloses a zeolite wheel adsorption concentration catalytic combustion device. Figure 1-3A zeolite rotary adsorption concentration catalytic combustion device comprises a frame 1, a zeolite rotary concentration device 2 is installed on the inner side of the frame 1, an air filtering facility is added to the air intake side of the zeolite rotary concentration device 2 on the frame 1 to remove solid particles in the exhaust gas and reduce the failure rate of the zeolite rotary concentration device 2, the zeolite rotary concentration device 2 is divided into a desorption zone, a cooling zone, and an adsorption zone, a desorption component 3 is installed on the desorption zone, a hot air flow is introduced into the desorption zone through the desorption component 3, and a thermal desorption treatment of VOCs is achieved, a cooling component 9 is installed on the cooling zone, a cold air flow is introduced into the cooling zone through the cooling component 9, and the zeolite that has passed through the desorption zone is reduced. The temperature is set so that the zeolite can re-enter the adsorption zone to adsorb VOCs. A recovery component 4 is installed on the adsorption zone. The recovery component 4 includes an air collecting hood 402 and a continuous emission monitoring system 403. The air collecting hood 402 is connected to the adsorption zone of the zeolite rotary concentration device 2. The detection probe of the continuous emission monitoring system 403 is located on the air collecting hood 402. A three-way valve 401 is installed between the air collecting hood 402 and the cooling component 9. The air after adsorption treatment is collected by the air collecting hood 402, and the continuous emission monitoring system 403 monitors in real time whether the discharged air meets the standard. If the air meets the standard, it is directly discharged. If the air does not meet the standard, it is recovered into the cooling component 9.

[0026] Reference Figure 2 A catalytic burner 5 is also installed on the frame 1, and the inner sides of the catalytic burner 5 are respectively a combustion chamber 501 and a heat exchange chamber 502. A transducer 6 is installed on the upper end of the frame 1, and an incineration exhaust pipe 11 is installed on the combustion chamber 501. The upper end of the incineration exhaust pipe 11 is connected to the heat medium inlet of the transducer 6. The heat and hot air generated by the combustion of VOCs enter the transducer 6 to realize the waste heat recovery and utilization. The heat medium outlet of the transducer 6 is connected to the outlet pipe 8, which is connected to the external air purification equipment through the outlet pipe 8.

[0027] Reference Figure 2 The desorption component 3 includes a desorption fan 301 installed in the desorption zone, a heat exchange combustion tube 303 is installed on the air outlet side of the desorption zone, and a heat exchange inlet pipe 302 is installed on the air inlet side of the desorption zone. The end of the heat exchange inlet pipe 302 passes through the heat exchange chamber 502 and is connected to the refrigerant outlet of the transducer 6. The refrigerant inlet of the transducer 6 is connected to the desorption inlet pipe 10. The airflow entering through the desorption inlet pipe 10 is preliminarily preheated by the transducer 6, and then the heat exchange chamber 502 is used to exchange heat on the heat exchange inlet pipe 302, and the airflow in the heat exchange inlet pipe 302 is heated for a second time. The heated airflow enters the desorption zone, and the zeolite is thermally desorbed. The high-concentration exhaust gas under desorption enters the heat exchange combustion tube 303, and the high-concentration exhaust gas is preheated by the heat of the heat exchange chamber 502, so as to improve the combustion efficiency and maximize the use of the heat generated by the combustion. The desorption inlet pipe 10 can be connected to an air filter as needed to prevent dust particles from entering the desorption zone.

[0028] Reference Figure 3 The cooling component 9 includes a cooling fan 901 and a cooling air inlet pipe 902. The cooling fan 901 is installed in the cooling zone. The cooling air inlet pipe 902 is installed on the air inlet side of the cooling zone. The three-way valve 2 903 is installed on the air outlet side of the cooling zone. One end of the three-way valve 2 903 is connected to the adsorption zone, and the other end is connected to the air exhaust pipe, which is connected to the external atmospheric environment. It is connected to the cooling air inlet pipe 902 through one end of the air collecting hood 402. When the VOCs concentration in the air is higher than the set value, the external terminal controller controls the continuous emission monitoring system 403 and the three-way valve 2 903 to switch the state, so that the air collecting hood 402 is connected to the cooling air inlet pipe 902, and the cooling zone is connected to the adsorption zone, and the substandard air is mixed with the cooling air, and the zeolite rotary concentration device 2 is cooled and cooled, so that the substandard air re-enters the adsorption zone, and the substandard air is recovered and processed, which can effectively prevent the substandard air from being discharged into the atmosphere.

[0029] Reference Figure 3 The end of the three-way valve 401 is connected to the adsorption exhaust pipe 7. When the VOCs concentration in the air is higher than the set value, the air collecting hood 402 is connected to the adsorption exhaust pipe 7 to discharge the air into the frame 1.

[0030] The implementation principle of a zeolite rotor adsorption concentration catalytic combustion device in the embodiment of the present application is:

[0031] The exhaust gas first passes through the air filtration facility to remove the solid particles therein, and then is guided to the adsorption area of ​​the zeolite rotor 2. In the adsorption area, the zeolite rotor 2 adsorbs the VOCs in the exhaust gas. The air that has been adsorbed is collected through the air collection hood 402 and enters the continuous emission monitoring system 403 for real-time monitoring. If the air meets the standard, it is directly discharged into the atmosphere through the outlet pipe 7; if it does not meet the standard, the substandard air is guided to the cooling area to mix with the cooling air by controlling the switching of the three-way valve 1 401 and the three-way valve 2 903. The mixed air enters the adsorption area again to achieve the recovery and treatment of the substandard air.

[0032] When the adsorption zone of the zeolite rotor 2 is saturated, the rotor rotates to the desorption zone. In the desorption zone, the desorption component 3 starts to work. The desorption fan 301 delivers the air preheated by the transducer 6 as a hot air flow into the desorption zone. The hot air flow heats the zeolite, causing the adsorbed VOCs to desorb and form high-concentration exhaust gas. The high-concentration exhaust gas is introduced into the heat exchange combustion tube 303. During this process, the exhaust gas is preheated by the heat exchange chamber 502 of the catalytic burner 5. The preheated exhaust gas enters the combustion chamber 501 for catalytic combustion to generate heat and clean gas.

[0033] The heat generated by catalytic combustion enters the transducer 6 through the heat medium pipe to achieve heat recovery. The refrigerant outlet of the transducer 6 is connected to the desorption air inlet pipe 10 to provide preheated air for the desorption process. At the same time, the refrigerant outlet is also connected to the cooling air inlet pipe 902 of the cooling component 9 to provide cooling air for the cooling zone. In the cooling zone, the cooling fan 901 blows cooling air in to cool down the zeolite that has been desorbed so that it can enter the adsorption zone again for adsorption.

[0034] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0035] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0036] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A zeolite rotary adsorption concentration catalytic combustion device, comprising a frame (1), a zeolite rotary concentration device (2), a desorption component (3), a recovery component (4) and a cooling component (9); The frame (1) is used for supporting and installing the entire mechanism; The zeolite rotary concentration device (2) is arranged on the frame (1), and the zeolite rotary concentration device (2) is sequentially divided into a desorption zone, a cooling zone, and an adsorption zone, and is used for adsorption and concentration of VOCs in the exhaust gas; The desorption component (3) is arranged in a desorption zone on the zeolite rotary concentrator (2) and is used to provide a hot air flow to the zeolite rotary concentrator (2) so as to achieve thermal desorption treatment of VOCs on the zeolite rotary concentrator (2); The recovery component (4) comprises an air collecting hood (402) and a continuous emission monitoring system (403); the air collecting hood (402) is connected to the adsorption area of ​​the zeolite rotary concentrator (2) and is used to collect and discharge air after adsorption treatment by the zeolite rotary concentrator (2); the detection probe of the continuous emission monitoring system (403) is located on the air collecting hood (402) and is used to monitor in real time whether the discharged air meets the standards; The cooling assembly (9) comprises a cooling fan (901) arranged in a cooling zone, and a cooling air inlet pipe (902) is arranged on the cooling fan (901) for providing airflow for the cooling fan (901) so as to cool down the zeolite rotary concentrator (2). A three-way valve (401) is arranged between the end of the cooling air inlet pipe (902) and the air collecting hood (402) for switching the exhaust direction of the air collecting hood (402) so as to realize that when the air is unqualified, it can flow back to the zeolite rotary concentrator (2) through the three-way valve (401) and the cooling air inlet pipe (902) for secondary treatment.

2. A zeolite wheel adsorption concentration catalytic combustion device according to claim 1, characterized in that: The desorption component (3) comprises a desorption fan (301) arranged in a desorption zone, a heat exchange inlet pipe (302) is arranged on the air inlet side of the desorption zone for providing a hot air flow required for thermal desorption, and a heat exchange combustion pipe (303) is arranged on the air outlet side of the desorption zone for discharging concentrated exhaust gas.

3. A zeolite wheel adsorption concentration catalytic combustion device according to claim 2, characterized in that: The frame (1) is also provided with a catalytic burner (5), and the heat exchange combustion tube (303) is connected to the catalytic burner (5) for incinerating concentrated VOCs.

4. A zeolite wheel adsorption concentration catalytic combustion device according to claim 3, characterized in that: A transducer (6) is also provided in the frame (1); a heat medium inlet of the transducer (6) is connected to the catalytic burner (5); the heat exchange air inlet pipe (302) is connected to a refrigerant outlet of the transducer (6); the refrigerant inlet of the transducer (6) is connected to a desorption air inlet pipe (10); and the heat medium outlet of the transducer (6) is connected to an air outlet pipe (8).

5. A zeolite wheel adsorption concentration catalytic combustion device according to claim 1, characterized in that: The end of the three-way valve 1 (401) is connected to an adsorption exhaust pipe (7), and a three-way valve 2 (903) is also provided on the outlet side of the cooling zone.

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