Zeolite rotating wheel adsorption catalytic combustion system

Abstract

The invention discloses a zeolite rotating wheel adsorption catalytic combustion system, which comprises a zeolite rotating wheel adsorption device, organic waste gas is introduced into one end of the first branch, and the other end of the first branch circulates at the gas inlet end of the zeolite rotating wheel adsorption device; the second branch is communicated between the desorption port and the heat blowing port of the zeolite rotary wheel adsorption device, and a purification mechanism, a flame arrester and a heater I are sequentially arranged on the second branch in the circulation direction of the second branch. The adjustable cooling module is arranged in the zeolite rotating wheel adsorption device, the outer shell and the inner shell are matched and connected in a sliding mode, on one hand, the size of an arc-shaped cavity formed by the outer shell and the inner shell is changed, the amount of introduced cooling gas is increased, and the cooling effect is enhanced; the cold area of the zeolite rotating wheel is increased, so that the local cold duration of the zeolite rotating wheel is prolonged, and the zeolite rotating wheel is ensured to reach the standard range of cooling temperature.

Description

Technical Field

[0001] The invention specifically relates to the technical field of organic waste gas treatment, and in particular to a zeolite rotor adsorption catalytic combustion system. Background Art

[0002] The petrochemical, pharmaceutical, printing, coating, electronics and other industries emit a large amount of waste gas containing VOCs during the production process. The rapid development of these industries has led to an increasing demand for waste gas treatment. Traditional waste gas treatment technologies such as activated carbon adsorption and direct combustion have certain limitations when treating large air volumes and low-concentration waste gases. The zeolite rotor adsorption catalytic combustion system can efficiently treat this type of waste gas and meet the actual needs of enterprises.

[0003] The zeolite wheel adsorption catalytic combustion system combines the zeolite wheel adsorption technology with the catalytic combustion technology to form a combined process with complementary advantages. The zeolite wheel can concentrate the large air volume and low concentration exhaust gas into small air volume and high concentration exhaust gas, reducing the difficulty and cost of subsequent catalytic combustion treatment; while the catalytic combustion technology can completely decompose the concentrated high-concentration exhaust gas into harmless carbon dioxide and water, achieving efficient purification of the exhaust gas. However, the existing zeolite wheel adsorption catalytic combustion system still has the following disadvantages:

[0004] 1. There are still some defects in the treatment of exhaust gas in the zeolite rotor adsorption catalytic combustion system. During the long-term exhaust gas treatment operation, it is easy to cause the net gas rate to gradually decrease, there is a risk of unqualified exhaust gas, and the energy consumption is high;

[0005] 2. When the zeolite wheel rotates to the cooling zone, since the heating air temperature in the desorption zone is between 180 and 250°C, in the case of unstable temperature, it is easy for the zeolite wheel in the cooling zone to fail to reach the standard range of the cooling temperature, thereby affecting the local adsorption effect of the zeolite wheel. Summary of the invention

[0006] To this end, the present invention proposes a zeolite rotor adsorption catalytic combustion system to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a zeolite rotor adsorption catalytic combustion system, comprising:

[0008] Zeolite wheel adsorption device;

[0009] A first branch, one end of which introduces organic waste gas and the other end of which flows through the air inlet end of the zeolite wheel adsorption device;

[0010] A second branch is connected between the desorption port and the heat blowing port of the zeolite wheel adsorption device, and a purification mechanism, a flame arrester, and a heater are sequentially arranged on the second branch along the flow direction thereof;

[0011] A third branch, one end of which introduces outdoor air and the other end of which is connected to the cooling port of the zeolite wheel adsorption device;

[0012] A fourth branch, one end of which is connected to the second branch located between the flame arrester and the heater 1, and the other end of which is connected to the cold outlet of the zeolite rotor adsorption device;

[0013] and a fifth branch, which is connected between the exhaust port of the zeolite wheel adsorption device and the exhaust device.

[0014] Further, preferably, the zeolite wheel adsorption device comprises:

[0015] a casing, in which a bearing frame is arranged;

[0016] A zeolite wheel, the front end of which is rotatably mounted on a bearing frame by a rotating shaft, and the rear end of the zeolite wheel is sleeved with a collar, and the collar is fixed on the casing;

[0017] and a cooling module, which and the high-temperature module are both fixed on the bearing frame, the cooling module is connected to the high-temperature module, and the cooling module and the high-temperature module are both fitted with the zeolite rotor.

[0018] Further, preferably, the cooling module consists of an outer shell, an inner shell, a sealing plate and a driving mechanism, wherein the outer shell and the inner shell both adopt a fan-shaped structure, the inner shell is slidingly connected in the outer shell through a driving mechanism, and the outer end of the inner shell is fixedly sealed with a sealing plate.

[0019] Furthermore, preferably, one end face of the outer shell that fits against the zeolite rotor is open, and the bottom plate of the inner shell is fitted against the zeolite rotor. The inner shell is driven by a driving mechanism to slide along the arc direction of the outer shell to adjust and control the contact area between the zeolite rotor and the cooling module.

[0020] Further, preferably, the driving mechanism comprises:

[0021] An arc-shaped rack fixed in the inner shell;

[0022] A driven gear 1 meshes with the arc-shaped rack for transmission, and the driven gear 1 is connected to the driven gear 2 through a connecting column;

[0023] A transmission gear is rotatably mounted on a bracket fixed in the inner housing, and the transmission gear is meshed with a driven gear for transmission;

[0024] And a driving gear is driven by a heat-proof motor fixed in the inner shell, and the driving gear is meshed with the transmission gear for transmission.

[0025] Further, as a preference, a ventilation chamber is attached to the rear end surface of the zeolite rotor, and the ventilation chamber is fixed to the casing, a plurality of partitions are arranged in the ventilation chamber, and the inner cavity of the ventilation chamber is divided into a cooling zone, a high-temperature desorption zone, an emptying zone, and an adsorption zone, wherein:

[0026] The cooling zone is connected between the cooling module and the cold outlet;

[0027] The high temperature desorption zone is connected between the high temperature module and the heat blowing port;

[0028] The adsorption zone is communicated with the exhaust port, and the exhaust zone is communicated with the circulation port of the zeolite wheel adsorption device.

[0029] Further, as a preference, a pressurizing fan, a pressure gauge, an air volume regulating valve 1, and a multi-stage filtering device are sequentially arranged on the first branch and along its flow direction, and an exhaust pipe is connected to the first branch between the pressure gauge and the air volume regulating valve 1, and an exhaust valve is installed on the exhaust pipe.

[0030] Further, preferably, the circulation port of the zeolite wheel adsorption device is connected to one end of a sixth branch, the other end of the sixth branch is connected to the first branch located in front of the pressurized fan, and an exhaust valve 1 is installed on the sixth branch.

[0031] Further, as a preference, an air volume regulating valve 4 is installed on the second branch between the purification mechanism and the zeolite wheel adsorption device;

[0032] A thermometer, a desorption fan, and a second air volume regulating valve are also installed on the second branch and located between the first heater and the zeolite wheel adsorption device;

[0033] The third branch road is provided with an air volume regulating valve 3, a cooling fan, and a refrigerator in sequence along its flow direction;

[0034] The fourth branch is provided with a second heater;

[0035] The fifth branch is provided with an exhaust valve 2.

[0036] Further, preferably, the purification mechanism comprises:

[0037] The catalytic combustion chamber has an air inlet connected to a seventh branch for introducing outdoor air, and an air volume regulating valve 5 and an air inlet fan are installed on the seventh branch;

[0038] and a heat exchanger, which is connected to the catalytic combustion chamber through a second branch, and the heat exchanger is located behind the catalytic combustion chamber.

[0039] The present invention adopts the above technology and has the following beneficial effects compared with the existing technology:

[0040] 1. The zeolite rotor adsorption device is provided with an adjustable cooling module. The outer shell and the inner shell are slidably connected. On the one hand, the volume of the arc cavity formed by the two is changed, the amount of cooling gas introduced is increased, and the cooling effect is enhanced. On the other hand, the contact position between the bottom plate of the inner shell and the zeolite rotor is changed, so that the cooling area of ​​the zeolite rotor is increased, thereby extending the local cooling time of the zeolite rotor to ensure that it reaches the standard range of the cooling temperature.

[0041] 2. In the system of the present invention, the second branch uses reused hot gas to perform hot-blow desorption treatment on the zeolite wheel. The reuse of hot gas avoids the energy consumption of reheating fresh gas for each desorption, and the hot gas is circulated in the system, and only a small amount of heat lost due to factors such as heat dissipation needs to be supplemented, which greatly reduces the energy required for heating the gas. Generally, 30% to 50% of the heating energy can be saved, effectively reducing the operating cost of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A schematic diagram of a zeolite rotor adsorption catalytic combustion system;

[0043] Figure 2 Schematic diagram of the internal structure of a zeolite rotor adsorption device in a zeolite rotor adsorption catalytic combustion system Figure 1 ;

[0044] Figure 3 Schematic diagram of the internal structure of a zeolite rotor adsorption device in a zeolite rotor adsorption catalytic combustion system Figure 2 ;

[0045] Figure 4 It is a rear structural cross-sectional view of a cooling module in a zeolite rotor adsorption catalytic combustion system;

[0046] Figure 5 for Figure 4 A magnified schematic diagram of part A;

[0047] Figure 6 This is a schematic diagram of the internal structure of a ventilation chamber in a zeolite rotor adsorption catalytic combustion system.

[0048] In the figure: 1. exhaust valve; 2. air volume regulating valve 1; 3. multi-stage filtering device; 4. zeolite wheel adsorption device; 5. exhaust valve 1; 6. exhaust device; 7. exhaust valve 2; 8. air volume regulating valve 2; 9. desorption fan; 10. thermometer; 11. heater 1; 12. heater 2; 13. refrigerator; 14. cooling fan; 15. air volume regulating valve 3; 16. air volume regulating valve 4; 17. catalytic combustion chamber; 18. air volume regulating valve 5; 19. induced air fan; 20. flame arrester; 21. heat exchanger; 22. barometer; 23. pressurization Fan; 401, collar; 402, zeolite rotor; 403, hot air outlet; 404, cold air outlet; 405, exhaust port; 406, casing; 407, cooling module; 408, high temperature module; 409, ventilation chamber; 410, circulation port; 411, motor; 4071, outer casing; 4072, inner casing; 4073, baffle plate; 4074, driving gear; 4075, heat protection motor; 4076, transmission gear; 4077, driven gear 1; 4078, connecting column; 4079, bracket; 4080, arc rack. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] Example: Please refer to the attached Figure 1-6 The present invention provides a technical solution: a zeolite rotor adsorption catalytic combustion system, which comprises:

[0051] Zeolite wheel adsorption device 4;

[0052] The first branch has one end into which the organic waste gas is introduced, and the other end flows through the air inlet end of the zeolite wheel adsorption device 4;

[0053] The second branch is connected between the desorption port and the heat blowing port 403 of the zeolite wheel adsorption device 4. A purification mechanism, a flame arrester 20, and a heater 11 are sequentially arranged on the second branch along the flow direction thereof;

[0054] The third branch has one end for introducing outdoor air and the other end for connecting to the cooling port of the zeolite wheel adsorption device 4;

[0055] A fourth branch, one end of which is connected to the second branch located between the flame arrester 20 and the heater 11, and the other end is connected to the cold outlet 404 of the zeolite wheel adsorption device 4;

[0056] And a fifth branch, which is connected between the exhaust port 405 of the zeolite wheel adsorption device 4 and the exhaust device 6.

[0057] In this embodiment, the zeolite wheel adsorption device 4 includes:

[0058] A housing 406, in which a bearing frame is disposed;

[0059] The front end of the zeolite wheel 402 is rotatably mounted on a bearing frame by a rotating shaft, and the rear end of the zeolite wheel 402 is sleeved with a collar 401, and the collar 401 is fixed on the housing 406;

[0060] and a cooling module 407, which and a high-temperature module 408 are both fixed on the bearing frame, the cooling module 407 is connected to the high-temperature module 408, and the cooling module 407 and the high-temperature module 408 are both fitted with the zeolite wheel 402;

[0061] It should be added that a large synchronous wheel is fixed on the rotating shaft, a belt is used to transmit power between the large synchronous wheel and the small synchronous wheel, and the small synchronous wheel is fixed on the driving end of the motor 411;

[0062] Furthermore, the casing 406 adopts a sealed structure, and the exhaust gas is injected from the front port of the casing 406 , and is discharged from the exhaust port 405 or the circulation port 410 after the zeolite wheel adsorption process.

[0063] In this embodiment, the cooling module 407 is composed of an outer shell 4071, an inner shell 4072, a sealing plate 4073 and a driving mechanism, wherein the outer shell 4071 and the inner shell 4072 both adopt a fan-shaped structure, the inner shell 4072 is slidingly connected in the outer shell 4071 through a driving mechanism, and the outer end of the inner shell 4072 is fixedly sealed with a sealing plate 4073.

[0064] In this embodiment, the end surface of the outer shell 4071 that fits with the zeolite rotor 402 is open, and the bottom plate of the inner shell 4072 is fitted with the zeolite rotor 402. The inner shell 4072 is driven by the driving mechanism to slide along the arc direction of the outer shell 4071 to adjust and control the contact area between the zeolite rotor 402 and the cooling module 407.

[0065] Specifically, the outer shell and the inner shell are slidably connected, which, on the one hand, changes the volume of the arc-shaped cavity formed by the two, increases the amount of cooling gas introduced, and enhances the cooling effect; on the other hand, changes the contact position between the bottom plate of the inner shell and the zeolite wheel, thereby increasing the cooling area of ​​the zeolite wheel, thereby extending the local cooling time of the zeolite wheel and ensuring that it reaches the standard range of the cooling temperature.

[0066] In this embodiment, the driving mechanism includes:

[0067] An arc-shaped rack 4080 fixed in the inner housing 4072;

[0068] The driven gear 1 4077 is meshed with the arc-shaped rack 4080 for transmission, and the driven gear 1 4077 is connected to the driven gear 2 through the connecting column 4078;

[0069] The transmission gear 4076 is rotatably mounted on a bracket 4079 fixed in the inner housing 4072, and the transmission gear 4076 is meshed with the driven gear for transmission;

[0070] and a driving gear 4074, which is driven by a heat-proof motor 4075 fixed in the inner housing 4072, and the driving gear 4074 is meshed with a transmission gear 4076 for transmission;

[0071] It should be supplemented that the arc-shaped rack 4080, the outer shell and the inner shell share the same center so as to drive the inner shell to slide along the arc direction of the outer shell.

[0072] In this embodiment, a ventilation chamber 409 is attached to the rear end surface of the zeolite wheel 402, and the ventilation chamber 409 is fixed on the housing 406. A plurality of partitions are arranged in the ventilation chamber 409, and the inner cavity of the ventilation chamber 409 is divided into a cooling zone, a high-temperature desorption zone, an emptying zone, and an adsorption zone, wherein:

[0073] The cooling zone is connected between the cooling module 407 and the cold outlet 404;

[0074] The high temperature desorption zone is connected between the high temperature module 408 and the heat blowing port 403;

[0075] The adsorption zone is connected to the exhaust port 405, and the emptying zone is connected to the circulation port 410 of the zeolite wheel adsorption device 4;

[0076] Specifically, the area of ​​the exhaust zone is 1 / 2 of the adsorption zone. Since the local zeolite wheel in the exhaust zone is in long-term adsorption treatment, its adsorption capacity decreases. Therefore, the exhaust gas passing through the local zeolite wheel is re-discharged into the first branch for re-adsorption treatment.

[0077] In this embodiment, a pressurizing fan 23, a pressure gauge 22, an air volume regulating valve 2, and a multi-stage filtering device 3 are sequentially arranged on the first branch and along its flow direction, and an exhaust pipe is connected to the first branch between the pressure gauge 22 and the air volume regulating valve 2, and an exhaust valve 1 is installed on the exhaust pipe.

[0078] In this embodiment, the circulation port 410 of the zeolite wheel adsorption device 4 is connected to one end of the sixth branch, the other end of the sixth branch is connected to the first branch located in front of the booster fan 23, and an exhaust valve 5 is installed on the sixth branch.

[0079] In this embodiment, an air volume regulating valve 4 16 is installed on the second branch between the purification mechanism and the zeolite wheel adsorption device 4;

[0080] A thermometer 10, a desorption fan 9, and an air volume regulating valve 2 8 are also installed on the second branch and between the heater 11 and the zeolite wheel adsorption device 4;

[0081] The third branch road is provided with an air volume regulating valve 15, a cooling fan 14, and a refrigerator 13 in sequence along its flow direction;

[0082] A heater 2 12 is installed on the fourth branch;

[0083] An exhaust valve 2 7 is installed on the fifth branch.

[0084] In this embodiment, the purification mechanism includes:

[0085] The catalytic combustion chamber 17 has an air inlet connected to a seventh branch for introducing outdoor air, and an air volume regulating valve 18 and an air inlet fan 19 are installed on the seventh branch;

[0086] and a heat exchanger 21, which is connected to the catalytic combustion chamber 17 via a second branch, and the heat exchanger 21 is located behind the catalytic combustion chamber 17;

[0087] It should be noted that the first branch is used to pre-filter the organic waste gas, and then introduce the organic waste gas into the zeolite wheel adsorption device 4 for the organic matter adsorption process, and the gas passing through the adsorption area is discharged, and the gas passing through the exhaust area is circulated into the first branch for re-adsorption treatment;

[0088] The second branch uses reused hot gas to perform hot-blow desorption on the zeolite wheel. The reuse of hot gas avoids the energy consumption of reheating fresh gas for each desorption. The hot gas is recycled in the system, and only a small amount of heat lost due to factors such as heat dissipation needs to be replenished, which greatly reduces the energy required to heat the gas. Generally, 30% to 50% of heating energy can be saved, effectively reducing the operating cost of the equipment.

[0089] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A zeolite rotor adsorption catalytic combustion system, characterized in that: It includes: Zeolite rotor adsorption device (4); A first branch, one end of which introduces organic waste gas and the other end of which flows through the air inlet end of the zeolite wheel adsorption device (4); A second branch, which is connected between the desorption port and the heat blowing port (403) of the zeolite wheel adsorption device (4), wherein a purification mechanism, a flame arrester (20), and a heater (11) are sequentially arranged on the second branch and along the flow direction thereof; A third branch, one end of which introduces outdoor air and the other end of which is connected to the cooling port of the zeolite wheel adsorption device (4); a fourth branch, one end of which is connected to the second branch located between the flame arrester (20) and the heater 1 (11), and the other end of which is connected to the cold outlet (404) of the zeolite rotor adsorption device (4); and a fifth branch, which is connected between the exhaust port (405) of the zeolite wheel adsorption device (4) and the exhaust device (6).

2. A zeolite rotor adsorption catalytic combustion system according to claim 1, characterized in that: The zeolite wheel adsorption device (4) comprises: A housing (406) having a bearing frame disposed therein; A zeolite wheel (402), the front end of which is rotatably mounted on a bearing frame by means of a rotating shaft, the rear end of the zeolite wheel (402) is sleeved with a collar (401), and the collar (401) is fixed on a casing (406); and a cooling module (407), which and a high-temperature module (408) are both fixed on the bearing frame, the cooling module (407) is connected to the high-temperature module (408), and the cooling module (407) and the high-temperature module (408) are both in contact with the zeolite wheel (402).

3. A zeolite rotor adsorption catalytic combustion system according to claim 2, characterized in that: The cooling module (407) is composed of an outer shell (4071), an inner shell (4072), a sealing plate (4073) and a driving mechanism, wherein the outer shell (4071) and the inner shell (4072) both adopt a fan-shaped structure, the inner shell (4072) is slidingly connected in the outer shell (4071) through a driving mechanism, and the outer end of the inner shell (4072) is fixedly sealed with a sealing plate (4073).

4. A zeolite rotor adsorption catalytic combustion system according to claim 3, characterized in that: One end face of the outer shell (4071) that fits with the zeolite rotor (402) is open, and the bottom plate of the inner shell (4072) is fitted with the zeolite rotor (402). The inner shell (4072) is driven by a driving mechanism to slide along the arc direction of the outer shell (4071) to adjust and control the contact area between the zeolite rotor (402) and the cooling module (407).

5. A zeolite wheel adsorption catalytic combustion system according to claim 4, characterized in that: The driving mechanism comprises: An arc-shaped rack (4080) fixed in the inner shell (4072); A driven gear 1 (4077) meshes with the arc-shaped rack (4080) for transmission, and the driven gear 1 (4077) is connected to the driven gear 2 via a connecting column (4078); A transmission gear (4076) is rotatably mounted on a bracket (4079) fixed in the inner housing (4072), and the transmission gear (4076) is meshed with a driven gear for transmission; And a driving gear (4074) is driven by a heat-proof motor (4075) fixed in the inner shell (4072), and the driving gear (4074) is meshed with a transmission gear (4076) for transmission.

6. A zeolite rotor adsorption catalytic combustion system according to claim 4, characterized in that: A ventilation chamber (409) is attached to the rear end surface of the zeolite wheel (402), and the ventilation chamber (409) is fixed on the housing (406). A plurality of partitions are arranged in the ventilation chamber (409), and the inner cavity of the ventilation chamber (409) is divided into a cooling zone, a high-temperature desorption zone, an exhaust zone, and an adsorption zone, wherein: The cooling zone is connected between the cooling module (407) and the cold outlet (404); The high temperature desorption zone is connected between the high temperature module (408) and the heat blowing port (403); The adsorption zone is connected to the exhaust port (405), and the exhaust zone is connected to the circulation port (410) of the zeolite wheel adsorption device (4).

7. A zeolite rotor adsorption catalytic combustion system according to claim 6, characterized in that: A pressurizing fan (23), a pressure gauge (22), an air volume regulating valve (2), and a multi-stage filtering device (3) are sequentially arranged on the first branch line and along its flow direction, and an exhaust pipe is connected to the first branch line between the pressure gauge (22) and the air volume regulating valve (2), and an exhaust valve (1) is installed on the exhaust pipe.

8. A zeolite rotor adsorption catalytic combustion system according to claim 7, characterized in that: The circulation port (410) of the zeolite wheel adsorption device (4) is connected to one end of a sixth branch, the other end of the sixth branch is connected to a first branch located in front of the pressurizing fan (23), and an exhaust valve (5) is installed on the sixth branch.

9. The zeolite rotor adsorption catalytic combustion system according to claim 1, characterized in that: An air volume regulating valve 4 (16) is installed on the second branch between the purification mechanism and the zeolite wheel adsorption device (4); A thermometer (10), a desorption fan (9), and a second air volume regulating valve (8) are also installed on the second branch and located between the first heater (11) and the zeolite wheel adsorption device (4); The third branch line is provided with an air volume regulating valve (15), a cooling fan (14), and a refrigerator (13) in sequence along its flow direction; The fourth branch circuit is provided with a second heater (12); The fifth branch is provided with an exhaust valve 2 (7).

10. A zeolite rotor adsorption catalytic combustion system according to claim 9, characterized in that: The purification mechanism comprises: The catalytic combustion chamber (17) has an air inlet connected to a seventh branch for introducing outdoor air, and an air volume regulating valve (18) and an air inlet fan (19) are installed on the seventh branch; and a heat exchanger (21), which is in communication with the catalytic combustion chamber (17) via a second branch, and the heat exchanger (21) is located behind the catalytic combustion chamber (17).

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