VOC waste gas treatment system with rotary zeolite and treatment method

Abstract

The invention relates to the field of waste gas treatment, and discloses a VOC waste gas treatment system with rotary zeolite and a treatment method. Adsorption and desorption functions of rotary zeolite equipment are integrated in a rotary structure, and waste gas is subjected to adsorption treatment through an adsorption part of the rotary zeolite equipment; the waste gas can be heated through a desorption pipeline and then adsorbed through a desorption part of the rotary zeolite equipment, and then the waste gas subjected to combustion treatment through the efficient combustion equipment is safely discharged through an exhaust tower; after VOC waste gas enters a certain combustion chamber of the high-efficiency combustion equipment, the VOC gas is switched to enter another combustion chamber of the high-efficiency combustion equipment, and the previous combustion chamber is connected with a purging fan, so that cooling air enters the chamber, and the temperature is reduced; the three combustion chambers are alternately used, one chamber is used for combustion, one chamber is used for transmission, and the other chamber is used for cooling and purging, so that continuous and efficient combustion is guaranteed, meanwhile, long-term stable operation is guaranteed, and the environment-friendly emission standard is met.

Description

Technical Field

[0001] The present invention relates to the field of waste gas treatment, and in particular to a VOC waste gas treatment system and treatment method with rotating zeolite. Background Art

[0002] my country has a total emission of more than 20 million tons of volatile organic compounds (VOCs) each year, which can easily cause serious pollution to the atmosphere. The domestic (VOCs) environmental protection management industry has been developing for many years, but the overall progress is slow. One of the main obstacles is that the recovered solvents are mostly accompanied by deterioration such as acidification, coloration, odor, and high water content. The existing organic solvent recovery and treatment methods and devices have very low treatment yields and no economic benefits.

[0003] Many industrial production, sewage, treatment and garbage disposal processes will generate a large amount of waste gas containing organic matter (VOCs). In the production and processing of chemical, pharmaceutical, coating, semiconductor and printing industries, as organic solvents evaporate, a large amount of volatile organic compounds, namely VOCs waste gas, will be generated. If VOCs waste gas is directly discharged into the atmosphere, it will not only seriously pollute the air environment, but its VOCs gas molecules will also react with sunlight, ozone, etc. to form harmful organic particles, which will further damage the atmosphere and have a very adverse effect on the environment and human body.

[0004] At present, the adsorption method has the highest adoption rate and the most mature technology in my country, that is, the VOCs waste gas first passes through the pretreatment device to remove dust particles in the flue gas, and then the organic matter is adsorbed by the adsorption bed to obtain clean flue gas and directly discharged. Different waste gas treatment technologies are used according to different waste gas characteristics. For the treatment of large air volume, medium and low concentration industrial organic waste gas, the main process used is adsorption concentration + combustion or recovery treatment process. The adsorption technology mainly uses the pore structure of the adsorption material to adsorb and intercept pollutants in the waste gas, so as to achieve the purpose of purifying the waste gas. After the adsorption amount of the adsorption layer of the adsorption bed reaches saturation, it must be desorbed and regenerated. Otherwise, the original adsorption layer will not be able to continue to adsorb VOCs molecules in the waste gas, thereby losing the function of purifying the gas. Therefore, in the process of using adsorption means to treat VOCs waste gas, it is necessary to constantly switch back and forth between adsorption and desorption modes.

[0005] In response to the problem of treating VOCs waste gas through adsorption and desorption, the industry has conducted relevant research, such as a fixed-bed zeolite VOC waste gas treatment system;

[0006] When the purified gas in the zeolite fixed bed system reaches the exhaust gas concentration emission standard value, the purified gas is discharged from the purified gas outlet on the zeolite adsorption fixed bed unit, and at the same time the zeolite adsorption fixed bed unit enters the desorption regeneration process, and the desorption fan blows the desorption gas to desorb the organic solvent adsorbed in the zeolite adsorption fixed bed unit; however, since the zeolite fixed bed of this patent usually needs to periodically stop the adsorption process for desorption and regeneration, this will cause intermittent operation of the system, resulting in low working efficiency; secondly, the zeolite fixed bed equipment is usually large in size and requires a large installation space, and the zeolite fixed bed is easily damaged in frequent adsorption-desorption cycles, and the adsorbent needs to be replaced regularly, and the maintenance cost is high. Summary of the invention

[0007] The present invention is to overcome the technical problems existing in the above-mentioned prior art, and is a VOC waste gas treatment system with rotating zeolite;

[0008] Another object of the present invention is to provide a method for treating VOC waste gas using a rotating zeolite system.

[0009] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0010] A VOC waste gas treatment system with a rotary zeolite, comprising: a filtering device, a rotary zeolite device, a high-efficiency combustion device and an exhaust tower; the rotary zeolite device comprises an adsorption part, a cooling part and a desorption part, and the filtering device is continuously connected with the adsorption part and the exhaust tower of the rotary zeolite device through an adsorption pipeline, and is used for adsorbing waste gas;

[0011] The filtering device (1) is connected to the cooling part of the rotating zeolite device (2) through a desorption pipe (6), and the cooling part is connected to the desorption part of the rotating zeolite device (2) through a heat exchange component (7) and a desorption pipe (6), and the desorption part of the rotating zeolite device (2) is also connected to the exhaust tower (4) through a high-efficiency combustion device (3). Preferably, the filtering device is connected to the cooling part of the rotating zeolite device through a desorption pipe, and the cooling part is heated by a heat exchange component and then connected to the desorption part of the rotating zeolite device through a desorption pipe, and finally desorbed by a high-efficiency combustion device and discharged into the exhaust tower.

[0012] Furthermore, the high-efficiency combustion equipment comprises a combustion part, a first chamber, a second chamber and a third chamber; the desorption part of the rotary zeolite equipment is connected to the first chamber, the second chamber and the third chamber through a first pneumatic three-way valve, a second pneumatic three-way valve and a third pneumatic three-way valve respectively;

[0013] The three chambers of the high-efficiency combustion equipment are all connected to the purge blower through the pneumatic three-way valve, and the three chambers of the high-efficiency combustion equipment are also connected to the exhaust tower through the pneumatic three-way valve.

[0014] Furthermore, a desorption fan, a desorption pressure regulating valve and a desorption pressure transmitter are provided on the desorption pipeline between the rotating zeolite device and the high-efficiency combustion device, and the desorption fan is electrically connected to the desorption pressure regulating valve and the desorption pressure transmitter.

[0015] Furthermore, a heat exchange temperature detector is provided on the desorption pipe between the heat exchange component and the desorption part of the rotating zeolite device, the high-efficiency combustion device is connected to the heat exchange component through the heat exchange pipe and the heating valve, and the heat exchange temperature detector is electrically connected to the heating valve.

[0016] Furthermore, the heat exchange pipeline is used to increase the gas temperature of the desorption pipeline, and the heat exchange pipeline at the outlet of the heat exchange component is connected to the exhaust tower through a regulating valve.

[0017] Furthermore, a main air blower is provided on the adsorption pipeline, and the adsorption pressure transmitter is arranged at the pipeline at the inlet of the filtering device, and the adsorption pressure transmitter is electrically connected to the main air blower.

[0018] Furthermore, the combustion part of the high-efficiency combustion equipment is also connected to the fuel gas through a fuel pipe, and the fuel pipe is provided with a fuel switching valve; the combustion part of the high-efficiency combustion equipment is also connected to a combustion-supporting fan through a combustion-supporting pipe.

[0019] Furthermore, the cyclozeolite device comprises a cyclozeolite and a skeleton shell, wherein the cyclozeolite is rotatably arranged on the skeleton shell; an adsorption channel is arranged on one side of the skeleton shell, and the adsorption pipeline is connected to the adsorption part of the cyclozeolite device through the adsorption channel;

[0020] The skeleton shell is provided with a cooling channel and a desorption channel. The desorption pipeline is connected to the cooling part of the rotating zeolite device through the cooling channel, and the desorption pipeline is connected to the desorption part of the rotating zeolite device through the desorption channel.

[0021] A treatment method for a VOC waste gas treatment system having a rotating zeolite, the treatment method for a VOC waste gas treatment system having a rotating zeolite comprising the following:

[0022] S1: Check whether the equipment and pipeline connections are intact to ensure there is no leakage, and ensure that the rotary zeolite in the rotary zeolite equipment is in normal condition and can rotate smoothly; open the fuel switch valve, check whether the fuel pipe is unobstructed, and start the combustion-supporting fan to ensure that the fuel gas and combustion-supporting gas are supplied normally; start the purge fan, desorption fan, and main air fan in the system to ensure that the air volume adjustment meets the design requirements;

[0023] S2: Start the filtration equipment and continuously introduce the VOC waste gas into the adsorption part of the rotary zeolite equipment through the adsorption pipeline; when the waste gas flows through the rotary zeolite, the VOC components are efficiently adsorbed on the zeolite surface. During the adsorption process, the adsorption pressure transmitter monitors the pressure at the inlet of the filtration equipment in real time and is electrically connected to the main air blower to dynamically adjust the system adsorption air volume to ensure stable operation;

[0024] S3: When the adsorption capacity of the rotary zeolite is close to saturation, the desorption pipeline is opened, and the cooling gas enters the cooling part of the rotary zeolite equipment to reduce the temperature of the rotary zeolite, and then enters the heat exchange component for heating, and the heated gas enters the desorption part of the rotary zeolite equipment for high-temperature desorption;

[0025] S4: The desorbed VOC concentrated gas enters the high-efficiency combustion equipment through the desorption pipeline. The desorbed gas first enters one of the chambers of the high-efficiency combustion equipment for high-temperature combustion, and then comes out of the other chamber and enters the exhaust tower for discharge;

[0026] S5: The heat generated by the high-efficiency combustion equipment during the combustion process is also transferred to the heat exchange components through the heat exchange pipe to increase the temperature of the desorbed gas and improve the energy efficiency of the system;

[0027] The waste gas after combustion treatment is safely discharged through the exhaust tower; the regulating valve in the system ensures that the waste gas after combustion is discharged within the compliance range according to the temperature and pressure conditions;

[0028] S6: After completing the treatment task, gradually shut down the fan, fuel gas and combustion-supporting gas supply, and stop the rotation of the rotating zeolite; check the filtering equipment and rotating zeolite in the system to ensure that they are not blocked or damaged.

[0029] Furthermore, in S4, after one of the chambers of the high-efficiency combustion equipment has been subjected to high-temperature combustion for a period of time, the passage between the desorption pipeline and another chamber of the high-efficiency combustion equipment is opened, and the chamber of the previous stage of high-temperature combustion is connected to the purge fan for cooling and impurity removal.

[0030] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0031] ① The rotating zeolite equipment integrates the adsorption and desorption functions in a rotating structure, and the exhaust gas is adsorbed through the adsorption part of the rotating zeolite equipment. The exhaust gas can also be heated through the desorption pipeline and then adsorbed through the desorption part of the rotating zeolite equipment. Since the core component of the rotating zeolite equipment is a partitioned wheel, the wheel is loaded with zeolite material and driven to rotate by a motor. The wheel is divided into an adsorption zone, a desorption zone and a cooling zone, so that the same material cycles through the three stages of adsorption, desorption and cooling in different time periods. By rotating the rotating zeolite equipment, the adsorption and desorption processes are alternately converted in time and space, which significantly improves the exhaust gas treatment efficiency.

[0032] ②The system uses the heat released by high-efficiency combustion equipment to transfer it to the heat exchange components through the heat exchange pipe to increase the temperature of the desorbed gas. This heat energy cycle design greatly reduces the energy consumption of the system and improves the overall energy efficiency.

[0033] ③ The high-efficiency combustion equipment is divided into multiple combustion chambers, and the use status of different chambers is switched by pneumatic three-way valves to achieve alternating high-temperature combustion and cooling. This design not only avoids overheating of the system, but also ensures full combustion and reduces the residual pollutants.

[0034] ④ Multiple fans and pressure transmitters (such as desorption fans, main air fans, adsorption pressure transmitters) in the system work together to achieve dynamic adjustment of the adsorption and desorption processes through real-time detection and feedback, ensuring stable operation of the system under different loads.

[0035] ⑤ Through the fuel switch valve, combustion-supporting fan and multi-chamber design, the efficient combustion equipment can ensure the full oxidation of the combustion gas. At the same time, the coordinated use of the exhaust tower and the regulating valve ensures that the exhaust gas meets the requirements of environmental protection regulations. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 is a schematic diagram of a VOC waste gas treatment system with rotating zeolite;

[0038] Figure 2 is an enlarged schematic diagram of A;

[0039] Figure 3 This is a schematic diagram of the structure of the rotating zeolite equipment.

[0040] in,

[0041] 1. Filtration equipment;

[0042] 2. Rotating zeolite equipment; 201. Rotating zeolite; 202. Skeleton shell; 203. Adsorption channel; 204. Cooling channel; 205. Desorption channel;

[0043] 3. High-efficiency combustion equipment; 301. Combustion unit; 302. First chamber; 303. Second chamber; 304. Third chamber; 305. First pneumatic three-way valve; 306. Second pneumatic three-way valve; 307. Third pneumatic three-way valve;

[0044] 4. Exhaust tower;

[0045] 5. Adsorption pipeline;

[0046] 6. Desorption pipeline;

[0047] 7. Heat exchange components;

[0048] 8. Purge fan;

[0049] 9. Desorption fan;

[0050] 10. Desorption pressure regulating valve;

[0051] 11. Desorption pressure transmitter;

[0052] 12. Heat exchange temperature detector;

[0053] 13. Combustion-supporting tube;

[0054] 14. Heating valve;

[0055] 15. Heat exchange pipe;

[0056] 16. Main air fan;

[0057] 17. Adsorption pressure transmitter;

[0058] 18. Fuel pipe;

[0059] 19. Fuel switch valve;

[0060] 20. Combustion-supporting fan. DETAILED DESCRIPTION

[0061] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the present application will be clearly and completely described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the described embodiments, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0062] Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. "First", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0063] Example 1

[0064] like Figure 1-3 As shown, this embodiment discloses a VOC waste gas treatment system with a rotating zeolite, comprising: a filtering device 1, a rotating zeolite device 2, a high-efficiency combustion device 3 and an exhaust tower 4; the rotating zeolite device 2 comprises an adsorption part, a cooling part and a desorption part, and the filtering device 1 is continuously connected with the adsorption part of the rotating zeolite device 2 and the exhaust tower 4 through an adsorption pipeline 5, for adsorbing waste gas;

[0065] The filtering device 1 is connected to the cooling part of the rotating zeolite device 2 through the desorption pipe 6, and the cooling part is connected to the desorption part of the rotating zeolite device 2 through the desorption pipe 6 through the heat exchange component 7. The desorption part of the rotating zeolite device 2 is also connected to the exhaust tower 4 through the high-efficiency combustion device 3.

[0066] Specifically, the filtering device 1 is connected to the cooling part of the rotating zeolite device 2 through the desorption pipe 6. The cooling part is heated by the heat exchange component 7 and then connected to the desorption part of the rotating zeolite device 2 through the desorption pipe 6. Finally, the desorption is performed by the high-efficiency combustion equipment and then enters the exhaust tower 4 for discharge.

[0067] During operation, the exhaust gas containing VOCs is first passed through the filter device 1 to remove large particle pollutants and impurities. The exhaust gas after preliminary filtration enters the rotary zeolite device 2 through the adsorption pipeline 5, and the rotary zeolite rotates to the desorption part of the system;

[0068] When the desorption part of the rotating zeolite device 2 rotates to the exhaust gas inlet, the VOC in the exhaust gas is effectively adsorbed by the rotating zeolite 201, and the cleaned gas is discharged through the exhaust tower 4;

[0069] When the desorption part of the rotating zeolite device 2 rotates to connect to the inlet of the heat exchange component 7, the high-temperature gas at the outlet of the heat exchange component 7 passes through the desorption part of the rotating zeolite device 2, and then connects to the high-efficiency combustion device 3 through the desorption pipeline 6 for treatment;

[0070] When the cooling part of the rotating zeolite device 2 rotates to the exhaust gas inlet, the exhaust gas enters the heat exchange component 7 from the rotating zeolite device 2 to cool the high-temperature rotating zeolite device 2;

[0071] The desorbed VOC concentrated gas then enters the high-efficiency combustion device 3 through the desorption pipeline 6. The desorbed gas first enters one of the chambers of the high-efficiency combustion device 3 for high-temperature combustion, and then comes out of the other chamber and enters the exhaust tower 4 for discharge.

[0072] Specifically, the rotating zeolite device 2 integrates the adsorption and desorption functions into a rotating structure, and the exhaust gas is adsorbed through the adsorption part of the rotating zeolite device 2. The zeolite of the rotating zeolite device 2 adsorbs pollutants in the exhaust gas, such as VOCs and other organic matter, and the purified clean air is discharged; the exhaust gas can also be heated through the desorption pipe 205 and then adsorbed through the desorption part of the rotating zeolite device 2. When the zeolite wheel rotates into the desorption zone, high-temperature hot air (usually 180-200°C) will be introduced through the pipe for heating. The pollutants in the zeolite are therefore analyzed and desorbed, and enter the subsequent treatment unit (such as catalytic combustion equipment) with the hot air; before the zeolite wheel enters the next adsorption zone, it will pass through the cooling zone so that its temperature can be restored to a level suitable for adsorption. This cooling treatment can ensure that the adsorption effect is not affected by excessive temperature. Since the core component of the rotating zeolite equipment is a partitioned wheel, the wheel is loaded with zeolite material and driven to rotate by a motor. The wheel is divided into adsorption zone, desorption zone and cooling zone, so that the same material can cycle through the three stages of adsorption, desorption and cooling in different time periods.

[0073] As a specific embodiment, the high-efficiency combustion device 3 includes a combustion part 301, a first chamber 302, a second chamber 303 and a third chamber 304; the desorption part of the rotating zeolite device 2 is connected to the first chamber 302, the second chamber 303 and the third chamber 304 through a first pneumatic three-way valve 305, a second pneumatic three-way valve 306 and a third pneumatic three-way valve 307 respectively;

[0074] The three chambers of the high-efficiency combustion device 3 are all connected to the purge blower 8 through a pneumatic three-way valve, and the three chambers of the high-efficiency combustion device 3 are also all connected to the exhaust tower 4 through a pneumatic three-way valve.

[0075] Specifically, after the VOC waste gas enters a combustion chamber (such as the first chamber 302), the combustion unit 301 ignites the waste gas and burns it completely to reduce the emission of pollutants; each combustion chamber is connected to the purge fan 8 and the exhaust tower 4. After the combustion chamber completes the treatment, the purge fan 8 sends the burned waste gas to the exhaust tower 4 for final discharge through the switching of the three-way valve;

[0076] The three combustion chambers (302, 303, 304) work alternately. After the combustion is completed, each combustion chamber can remove the residual gas through the purge fan 8 to ensure efficient and stable operation of the equipment. The exhaust gas after purging is also discharged through the exhaust tower in compliance with the standards. By alternately operating multiple combustion chambers, continuous and efficient treatment of VOC exhaust gas is achieved, avoiding the problem of downtime waiting for single-chamber combustion equipment. The precise control of the pneumatic three-way valve ensures the stability of the combustion process and avoids incomplete combustion and the generation of secondary pollution.

[0077] As a specific implementation method, a desorption fan 9, a desorption pressure regulating valve 10 and a desorption pressure transmitter 11 are provided on the desorption pipeline 6 between the rotating zeolite device 2 and the high-efficiency combustion device 3, and the desorption fan 9 is electrically connected to the desorption pressure regulating valve 10 and the desorption pressure transmitter 11;

[0078] A heat exchange temperature detector 12 is provided on the desorption pipe 6 between the heat exchange component 7 and the desorption part of the rotating zeolite device 2. The high-efficiency combustion device 3 is connected to the heat exchange component 7 through a heat exchange pipe 15 and a heating valve 14. The heat exchange temperature detector 12 is electrically connected to the heating valve 14.

[0079] Specifically, when the adsorption module reaches the set saturation state, the system starts the desorption fan 9, allowing the hot air to enter the desorption area of ​​the zeolite device through the desorption pipe 6, desorbing the VOC in the saturated zeolite module, and allowing the VOC-enriched gas to enter the high-efficiency combustion device 3 for treatment.

[0080] The desorption pressure regulating valve 10 and the desorption pressure transmitter 11 ensure that the pressure in the desorption pipeline 6 is maintained within the set range, thereby optimizing the desorption efficiency; the desorption pressure transmitter 11 monitors the desorption pressure in real time, and transmits the signal to the desorption fan 9 and the desorption pressure regulating valve 10, thereby realizing closed-loop control, so that the airflow pressure in the desorption pipeline 6 is maintained at an optimal state, the desorption efficiency is improved, and system failures caused by unstable pressure are avoided.

[0081] Specifically, during the desorption process, the VOC-enriched gas passes through the heat exchange component 7 and exchanges heat with the high-temperature gas in the high-efficiency combustion device 3;

[0082] The heat exchange temperature detector 12 detects the temperature of the gas in real time during the desorption process to ensure that it reaches the set optimal desorption temperature; the temperature signal is transmitted to the heating valve 14, and the heat flow in the heat exchange pipe 15 between the high-efficiency combustion equipment 3 and the heat exchange component 7 is adjusted to ensure that the heat energy required for desorption is sufficient and stable, avoiding incomplete desorption due to too low temperature or equipment damage due to too high temperature, thereby improving the safety and reliability of the system.

[0083] As a specific implementation, the heat exchange pipe 15 is used to increase the gas temperature of the desorption pipe 6, and the heat exchange pipe 15 at the outlet of the heat exchange component 7 is connected to the exhaust tower 4 through a regulating valve;

[0084] A main air blower 16 is also provided on the adsorption pipe 5 . An adsorption pressure transmitter 17 is arranged at the pipe at the inlet of the filtering device 1 . The adsorption pressure transmitter 17 is electrically connected to the main air blower 16 .

[0085] Specifically, the VOC waste gas is first processed by the filter device 1 to remove particulate matter and impurities in the waste gas. An adsorption pressure transmitter 17 is installed at the inlet pipe of the filter device 1 to monitor the pressure of the waste gas in real time;

[0086] The exhaust gas then enters the adsorption pipe 5 and is powered by the connected main air blower 16 to ensure stable airflow and maintain an appropriate adsorption pressure difference; the main air blower 16 and the adsorption pressure transmitter 17 are electrically connected to achieve linkage. When it is detected that the adsorption pressure does not meet the set range, the main air blower 16 will automatically adjust to maintain the normal operation of the system. Specifically, the adsorption pressure transmitter 17 monitors the gas pressure at the inlet of the filter device 1 in real time, and is linked to the main air blower 16 to ensure stable airflow and appropriate pressure difference during the adsorption process;

[0087] The VOC waste gas passing through the adsorption pipe 5 contacts with the rotating zeolite, and the zeolite efficiently adsorbs the VOC components therein, so that the clean gas enters the next stage;

[0088] When the rotating zeolite is saturated with adsorption, the system switches to the desorption mode; at this time, the high-temperature gas enters the saturated zeolite part through the desorption pipe 6, so that the adsorbed VOC molecules are desorbed.

[0089] The heat exchange pipe 15 is used to increase the temperature of the gas entering the desorption pipe 6, thereby ensuring the efficiency of the desorption process.

[0090] Specifically, the heat exchange component 7 transfers the heat in the system to the gas in the heat exchange pipe 15. By adjusting the regulating valve at the outlet of the heat exchange pipe 15, a part of the gas flow can enter the exhaust tower 4 to control the pressure and temperature in the pipe.

[0091] The VOC concentrated gas desorbed during the desorption process is further processed and discharged to the exhaust tower 4; specifically, the system relies on the stable airflow of the main air fan 16 to achieve gas circulation and continuous adsorption and desorption cycle, thereby improving the efficiency of VOC waste gas treatment.

[0092] Example 2

[0093] like Figure 1-3As shown, this embodiment discloses a VOC waste gas treatment system with a rotating zeolite, comprising: a filtering device 1, a rotating zeolite device 2, a high-efficiency combustion device 3 and an exhaust tower 4; the rotating zeolite device 2 comprises an adsorption part, a cooling part and a desorption part, and the filtering device 1 is continuously connected with the adsorption part of the rotating zeolite device 2 and the exhaust tower 4 through an adsorption pipeline 5, for adsorbing waste gas;

[0094] The filtering device 1 is connected to the cooling part of the rotating zeolite device 2 through the desorption pipe 6, and the cooling part is connected to the desorption part of the rotating zeolite device 2 through the desorption pipe 6 through the heat exchange component 7. The desorption part of the rotating zeolite device 2 is also connected to the exhaust tower 4 through the high-efficiency combustion device 3.

[0095] The filtering device 1 is connected to the cooling part of the rotating zeolite device 2 through the desorption pipe 6. The cooling part is heated by the heat exchange component 7 and then connected to the desorption part of the rotating zeolite device 2 through the desorption pipe 6. Finally, the desorption is performed by the high-efficiency combustion device 3 and then enters the exhaust tower 4 for discharge.

[0096] As a specific implementation, the combustion part 301 of the high-efficiency combustion equipment 3 is also connected to the fuel gas through the fuel pipe 18, and the fuel pipe 18 is provided with a fuel switching valve 19; the combustion part 301 of the high-efficiency combustion equipment 3 is also connected to the combustion-supporting fan 20 through the combustion-supporting pipe 13.

[0097] Specifically, high-concentration VOC waste gas enters the combustion part 301 of the high-efficiency combustion device 3 through a pipeline, and the combustion part 301 introduces fuel gas through a fuel pipe 18 to provide necessary fuel energy for the combustion process. A fuel switch valve 19 is provided on the fuel pipe 18 to control the inflow of fuel gas and ensure that the system accurately opens or closes the fuel supply when needed;

[0098] To ensure the stability and efficiency of the combustion process, the combustion-supporting fan 20 delivers combustion-supporting air to the combustion chamber 301 to make the fuel and VOC exhaust gas mix more fully and improve the combustion efficiency. The operation of the combustion-supporting fan 20 is matched with the fuel gas flow rate to ensure that the air-fuel ratio in the combustion process is in an optimal state; the exhaust gas generated after efficient combustion meets the standards and is discharged through the exhaust tower 4.

[0099] Specifically, in the combustion section 301, the VOC gas is fully mixed with the fuel gas and burned to generate high-temperature gas. The heat energy generated by the combustion can be used for waste heat recovery in other process links or for zeolite regeneration process to achieve cascade utilization of energy.

[0100] As a specific implementation, the rotating zeolite device 2 includes a rotating zeolite 201 and a skeleton shell 202, and the rotating zeolite can be rotatably arranged on the skeleton shell 202; an adsorption channel 203 is provided on one side of the skeleton shell 202, and the adsorption pipeline 5 is connected to the adsorption part of the rotating zeolite device 2 through the adsorption channel 203;

[0101] The skeleton shell 202 is provided with a cooling channel 204 and a desorption channel 205 . The desorption pipeline 6 is connected to the cooling part of the rotating zeolite device 2 through the cooling channel 204 , and the desorption pipeline 6 is connected to the desorption part of the rotating zeolite device 2 through the desorption channel 205 .

[0102] Specifically, when the exhaust gas containing volatile organic compounds (VOC) enters the rotating zeolite device 2 through the adsorption pipe 5, the airflow first enters the adsorption channel 203; in the adsorption channel 203, the exhaust gas contacts the rotating zeolite 201 rotatably arranged on the skeleton shell 202; the rotating zeolite 201, as an adsorption medium, can efficiently capture and adsorb the VOC components in the exhaust gas, thereby achieving the enrichment of pollutants;

[0103] Part of the rotating zeolite 201 contacts the cooling channel 204 during the rotation process, and the exhaust gas transported by the desorption pipeline 6 enters the cooling channel 204, which reduces the temperature of the high-temperature zeolite and ensures the continuous stability of its adsorption capacity;

[0104] When the rotating zeolite 201 is saturated with adsorption, it rotates into the desorption channel 205. The high-temperature exhaust gas inside the desorption pipe 6 enters the equipment through the desorption channel 205, so that the VOC of the rotating zeolite 201 is decomposed from the zeolite under the action of high temperature or other desorption media, thereby realizing the regeneration of the adsorption material.

[0105] Example 3

[0106] like Figure 1-3 As shown, this embodiment discloses a treatment method of a VOC waste gas treatment system with a rotating zeolite, and the treatment method of the VOC waste gas treatment system includes the following:

[0107] S1: Check whether the equipment and pipeline connections are intact to ensure that there is no leakage, and ensure that the rotary zeolite 201 in the rotary zeolite device 2 is in normal condition and can rotate smoothly; open the fuel switch valve 19, check whether the fuel pipe 18 is unobstructed, and start the combustion-supporting fan 20 to ensure that the fuel gas and the combustion-supporting gas are supplied normally; start the purge fan 8, the desorption fan 9, and the main air fan 16 in the system to ensure that the air volume adjustment meets the design requirements;

[0108] S2: Start the filter device 1, and continuously introduce the VOC waste gas into the adsorption part of the rotary zeolite device 2 through the adsorption pipe 5; when the waste gas flows through the rotary zeolite 201, the VOC components are efficiently adsorbed on the zeolite surface. During the adsorption process, the adsorption pressure transmitter 17 monitors the pressure at the inlet of the filter device 1 in real time, and is electrically connected to the main air blower 16 to dynamically adjust the system adsorption air volume to ensure stable operation;

[0109] S3: When the adsorption capacity of the rotary zeolite 201 is close to saturation, the desorption pipeline 6 is opened, and the cooling gas enters the cooling part of the rotary zeolite device 2 to reduce the temperature of the rotary zeolite 201, and then enters the heat exchange component 7 for heating, and the heated gas enters the desorption part of the rotary zeolite device 2 for high-temperature desorption;

[0110] S4: The desorbed VOC concentrated gas enters the high-efficiency combustion device 3 through the desorption pipeline 6. The desorbed gas first enters one chamber of the high-efficiency combustion device 3 for high-temperature combustion, and then comes out of the other chamber and enters the exhaust tower 4 for discharge;

[0111] S5: The heat generated by the high-efficiency combustion device 3 during the combustion process is also transferred to the heat exchange component 7 through the heat exchange pipe 15 to increase the temperature of the desorbed gas and improve the energy efficiency of the system;

[0112] The exhaust gas after combustion treatment is safely discharged through the exhaust tower 4; the regulating valve in the system ensures that the exhaust gas after combustion is discharged within the compliance range according to the temperature and pressure conditions;

[0113] S6: After completing the treatment task, gradually shut down the fan, fuel gas and combustion-supporting gas supply, and stop the rotation of the rotating zeolite 201; check the filter device 1 and the rotating zeolite 201 in the system to ensure that they are not blocked or damaged.

[0114] Specifically, the use of rotating zeolite materials can efficiently adsorb low-concentration VOC gases and make them easier to handle by concentrating them, thereby reducing the energy consumption of combustion treatment;

[0115] The system regenerates zeolite through cooling and desorption cycles, avoiding frequent replacement of adsorption materials and improving the economy and operating efficiency of the equipment;

[0116] The heat generated by the high-efficiency combustion device 3 is recycled for heating the desorbed gas through the heat exchange pipe 15, thus minimizing the consumption of external energy;

[0117] Through the linkage adjustment of the adsorption pressure transmitter 17 and the main air blower 16, the system can automatically adapt to different air volume requirements to ensure that the adsorption process is stable and efficient.

[0118] As a specific implementation method, in S4, after one of the chambers of the high-efficiency combustion equipment 3 performs high-temperature combustion for a period of time, the desorption pipe 6 and the channel of another chamber of the high-efficiency combustion equipment 3 are opened, and the chamber of high-temperature combustion in the previous stage is connected to the purge fan 8 for cooling and impurity removal.

[0119] Specifically, the VOC concentrated gas enters the first combustion chamber of the high-efficiency combustion device 3 through the desorption pipeline 6 for high-temperature combustion. This process completely oxidizes and decomposes organic matter, reducing the emission of pollutants;

[0120] After the first combustion chamber has been burning for a period of time, the residues and heat accumulated inside the chamber need to be processed, and then the VOC gas is switched to enter the second combustion chamber of the high-efficiency combustion equipment 3 to start a new round of combustion. The first combustion chamber is connected to the purge fan 8 to allow cooling air to enter the chamber to reduce the temperature and purge and discharge the impurities and exhaust gas remaining from the combustion.

[0121] By using three combustion chambers alternately, with one chamber burning, one chamber transferring, and the other chamber cooling and purging, while ensuring continuous and efficient combustion, dynamic cleaning and cooling management of the equipment is achieved, improving overall energy efficiency and equipment reliability, ensuring long-term stable operation and meeting environmental emission standards.

[0122] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A VOC waste gas treatment system with rotating zeolite, characterized in that: include: A filtering device (1), a rotating zeolite device (2), a high-efficiency combustion device (3) and an exhaust tower (4); the rotating zeolite device (2) comprises an adsorption part, a cooling part and a desorption part, and the filtering device (1) is continuously connected to the adsorption part and the exhaust tower (4) of the rotating zeolite device (2) through an adsorption pipeline (5) for adsorbing exhaust gas; The filtering device (1) is connected to the cooling part of the rotating zeolite device (2) via a desorption pipeline (6); the cooling part is connected to the desorption part of the rotating zeolite device (2) via a heat exchange component (7) and the desorption pipeline (6); the desorption part of the rotating zeolite device (2) is also connected to the exhaust tower (4) via a high-efficiency combustion device (3).

2. The VOC waste gas treatment system with rotating zeolite according to claim 1, characterized in that: The high-efficiency combustion device (3) comprises a combustion section (301), a first chamber (302), a second chamber (303) and a third chamber (304); the desorption section of the rotating zeolite device (2) is connected to the first chamber (302), the second chamber (303) and the third chamber (304) via a first pneumatic three-way valve (305), a second pneumatic three-way valve (306) and a third pneumatic three-way valve (307) respectively; The three chambers of the high-efficiency combustion equipment (3) are all connected to a purge fan (8) via a pneumatic three-way valve, and the three chambers of the high-efficiency combustion equipment (3) are also all connected to an exhaust tower (4) via a pneumatic three-way valve.

3. The VOC waste gas treatment system with rotating zeolite according to claim 2, characterized in that: A desorption fan (9), a desorption pressure regulating valve (10) and a desorption pressure transmitter (11) are provided on the desorption pipeline (6) between the rotating zeolite device (2) and the high-efficiency combustion device (3); the desorption fan (9) is electrically connected to the desorption pressure regulating valve (10) and the desorption pressure transmitter (11).

4. The VOC waste gas treatment system with rotating zeolite according to claim 3, characterized in that: A heat exchange temperature detector (12) is provided on the desorption pipe (6) between the heat exchange component (7) and the desorption part of the rotating zeolite device (2); the high-efficiency combustion device (3) is connected to the heat exchange component (7) via a heat exchange pipe (15) and a heating valve (14); and the heat exchange temperature detector (12) is electrically connected to the heating valve (14).

5. The VOC waste gas treatment system with rotating zeolite according to claim 4, characterized in that: The heat exchange pipe (15) is used to increase the gas temperature of the desorption pipe (6), and the heat exchange pipe (15) at the outlet of the heat exchange component (7) is connected to the exhaust tower (4) via a regulating valve.

6. The VOC waste gas treatment system with rotating zeolite according to claim 5, characterized in that: The adsorption pipe (5) is also provided with a main air blower (16), and the adsorption pressure transmitter (17) is arranged at the pipe at the inlet of the filtering device (1), and the adsorption pressure transmitter (17) is electrically connected to the main air blower (16).

7. The VOC waste gas treatment system with rotating zeolite according to claim 6, characterized in that: The combustion part (301) of the high-efficiency combustion device (3) is also connected to fuel gas via a fuel pipe (18), and the fuel pipe (18) is provided with a fuel switch valve (19); the combustion part (301) of the high-efficiency combustion device (3) is also connected to a combustion-supporting fan (20) via a combustion-supporting pipe (13).

8. The VOC waste gas treatment system with rotating zeolite according to claim 7, characterized in that: The rotating zeolite device (2) comprises a rotating zeolite (201) and a skeleton shell (202), wherein the rotating zeolite is rotatably arranged on the skeleton shell (202); an adsorption channel (203) is arranged on one side of the skeleton shell (202), and the adsorption pipeline (5) is connected to the adsorption part of the rotating zeolite device (2) via the adsorption channel (203); The skeleton shell (202) is provided with a cooling channel (204) and a desorption channel (205); the desorption pipeline (6) is connected to the cooling part of the rotating zeolite device (2) through the cooling channel (204); and the desorption pipeline (6) is connected to the desorption part of the rotating zeolite device (2) through the desorption channel (205).

9. A method for treating VOC waste gas using the VOC waste gas treatment system with a rotating zeolite as claimed in any one of claims 1 to 8, characterized in that: The treatment method of the VOC waste gas treatment system with rotating zeolite includes: the following: S1: Check whether the equipment and pipeline connections are intact to ensure that there is no leakage, and ensure that the rotary zeolite (201) in the rotary zeolite device (2) is in normal condition and can rotate smoothly; open the fuel switch valve (19), check whether the fuel pipe (18) is unobstructed, and start the combustion-supporting fan (20) to ensure that the fuel gas and the combustion-supporting gas are supplied normally; Start the purge fan (8), desorption fan (9), and main air fan (16) in the system to ensure that the air volume adjustment meets the design requirements; S2: starting the filtering device (1) and continuously introducing the VOC waste gas into the adsorption part of the rotating zeolite device (2) through the adsorption pipe (5); When the exhaust gas flows through the rotating zeolite (201), the VOC components are efficiently adsorbed onto the surface of the zeolite. During the adsorption process, the adsorption pressure transmitter (17) monitors the pressure at the inlet of the filter device (1) in real time and is electrically connected to the main air blower (16) to dynamically adjust the system adsorption air volume to ensure stable operation. S3: When the adsorption capacity of the rotary zeolite (201) is close to saturation, the desorption pipeline (6) is opened, and the cooling gas enters the cooling part of the rotary zeolite device (2) to reduce the temperature of the rotary zeolite (201), and then enters the heat exchange component (7) for heating, and the heated gas enters the desorption part of the rotary zeolite device (2) for high-temperature desorption; S4: The desorbed VOC concentrated gas enters the high-efficiency combustion device (3) through the desorption pipeline (6). The desorbed gas first enters one chamber of the high-efficiency combustion device (3) for high-temperature combustion, and then comes out of the other chamber and enters the exhaust tower (4) for discharge; S5: The heat generated by the high-efficiency combustion device (3) during the combustion process is also transferred to the heat exchange component (7) through the heat exchange pipe (15) to increase the temperature of the desorbed gas and improve the energy efficiency of the system; The waste gas after combustion treatment is discharged safely through the exhaust tower (4); the regulating valve in the system ensures that the waste gas after combustion is discharged within the compliance range according to the temperature and pressure conditions; S6: After completing the treatment task, gradually shut down the fan, fuel gas and combustion-supporting gas supply, and stop the rotation of the rotating zeolite (201); check the filtering device (1) and the rotating zeolite (201) in the system to ensure that they are not blocked or damaged.

10. The VOC waste gas treatment method using the rotating zeolite system according to claim 9 is characterized in that: In S4, after one of the chambers of the high-efficiency combustion device (3) has been in high-temperature combustion for a period of time, the passage between the desorption pipeline (6) and the other chamber of the high-efficiency combustion device (3) is opened, and the chamber in the previous stage of high-temperature combustion is connected to the purge fan (8) for cooling and impurity removal.

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