A multi-chamber regenerative thermal oxidation combustion treatment device for RTO

Abstract

This utility model discloses a multi-chamber regenerative thermal oxidation combustion treatment device (RTO), comprising a housing, an exhaust gas inlet pipe, an exhaust gas outlet pipe, an air inlet pipe, a fan, and a chimney. The housing is divided into regenerator chambers I, II, III, and IV, and a combustion chamber. Regenerator chambers I, II, III, and IV are arranged side-by-side below the combustion chamber and are connected to it. A burner is located at the top of the combustion chamber. The exhaust gas inlet pipe, exhaust gas outlet pipe, and air inlet pipe are all located at the bottom of the housing, and each of these pipes has several branch pipes I, II, and III. Branch pipes I, II, and III are all connected to regenerator chambers I, II, III, and IV. This utility model enables preheating and recovery; it allows for maintenance and replacement of the ceramic regenerator without shutting down the system, thereby improving exhaust gas treatment efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of RTO regenerative thermal oxidation combustion technology, and specifically relates to an RTO multi-chamber regenerative thermal oxidation combustion treatment device. Background Technology

[0002] Ceramic heat storage bodies have high heat capacity and thermal conductivity, enabling them to absorb heat energy from waste gas and release heat during the cycle reversal process to preheat fresh waste gas. Over time and under different usage conditions, ceramic heat storage bodies may be worn or clogged. When subjected to high temperatures and frequent thermal shocks for a long time, ceramic heat storage bodies are prone to breakage, burning, or softening and clogging, which affects heat recovery efficiency.

[0003] A search revealed an existing technology announcement number CN222352338U for an electric heating RTO device with easily replaceable heat storage ceramics. This device includes a main body with an internal heating box, cleanrooms equidistantly carved into the side of the main body, a sealing cover rotatably connected to the side of the cleanroom, a sealing strip installed on the inner wall of the sealing cover, a bracket slidably connected inside the cleanroom, grooves symmetrically carved into the bottom wall of the cleanroom, rollers corresponding to the grooves fixedly connected to the bottom of the bracket, the rollers slidably connected to the grooves, a base plate fixedly connected to the bottom of the bracket, multiple vent holes equidistantly carved into the base plate, and a ceramic heat storage element detachably connected to the bracket.

[0004] A search revealed an integrated three-chamber RTO waste gas treatment device (CN211781139U), comprising a first regenerator, a second regenerator, a third regenerator, an oxidation chamber, and an air duct. The air duct is located at the bottom of the device. The first and third regenerators are spaced apart at both ends of the air duct, and the second regenerator is located in the middle of the air duct. The upper ends of the first, second, and third regenerators are connected via the oxidation chamber. The first, second, and third regenerators, along with the air duct, collectively define a first accommodating space, within which a first lifting valve assembly, a burner, and a control cabinet are installed. The second, third, and oxidation chambers, along with the air duct, collectively define a second accommodating space, within which a second and third lifting valve assembly are installed.

[0005] The above-mentioned patent has the following drawbacks in its processing: the replacement of the ceramic heat storage body requires shutdown, which affects the efficiency of waste gas treatment; moreover, the ceramic heat storage body is large and inconvenient to replace, and the replacement process is prone to damage to the ceramic heat storage body at the bottom. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an RTO multi-chamber regenerative thermal oxidation combustion treatment device. The ceramic heat storage body absorbs and stores the heat carried by the gas, thereby achieving preheating and recovery. It can perform maintenance and replacement of the ceramic heat storage body without stopping the machine, thereby improving the waste gas treatment efficiency.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A multi-chamber regenerative thermal oxidation combustion treatment device includes a housing, an exhaust gas inlet pipe, an exhaust gas outlet pipe, an air inlet pipe, a fan, and a chimney. The housing is divided into regenerator chambers I, II, III, and IV, and a combustion chamber. Regenerator chambers I, II, III, and IV are arranged side-by-side below the combustion chamber and are connected to it. A burner is installed at the top of the combustion chamber. Each of the regenerator chambers I, II, III, and IV contains a ceramic regenerator. The exhaust gas inlet pipe, exhaust pipe, and air inlet pipe are all located at the bottom of the housing, and each of these pipes has several branch pipes I, II, and III. Branch pipes I, II, and III are connected to heat storage chambers I, II, III, and IV, respectively. Electromagnetic valves are installed on branch pipes I, II, and III. The fan is fixed to the ground and connected to the air inlet pipe. The chimney is connected to the exhaust pipe, and the exhaust gas inlet pipe is connected to the dust collector's pipe.

[0009] The dust-removed exhaust gas enters the heat storage chamber I through the exhaust gas inlet pipe. After preheating in heat storage chamber I, it enters the combustion chamber for combustion and oxidation, thus purifying the exhaust gas. The purified gas, carrying heat, passes through heat storage chamber II and enters the exhaust pipe, then exits through the chimney. The ceramic heat storage element in heat storage chamber II absorbs and retains the heat carried by the gas, thus achieving preheating recovery and utilization. Simultaneously, the air inlet pipe backflushs heat storage chamber III, expelling residual exhaust gas from heat storage chamber III into the combustion chamber. The exhaust gas then enters heat storage chamber II through the exhaust gas inlet pipe for preheating, then enters the combustion chamber for combustion and oxidation, before exiting through heat storage chamber III. At the same time, air backflushes heat storage chamber I. This process of preheating and combustion oxidation of the exhaust gas is repeated alternately. Heat storage chamber IV is a standby chamber. When the ceramic heat storage element needs maintenance or replacement, heat storage chamber IV is used to alternately purify the exhaust gas while simultaneously maintaining the heat storage chamber under maintenance, allowing for maintenance and replacement of the ceramic heat storage element without shutting down the system.

[0010] The heat storage chambers I, II, III, and IV are equipped with support frames, and the support frames are equipped with clamping grooves. The ceramic heat storage bodies are installed on the support frames and are divided into several groups, and the several groups of ceramic heat storage bodies are stacked.

[0011] Each of the heat storage chambers I, II, III, and IV is equipped with an isolation mechanism between itself and the combustion chamber. The isolation mechanism includes an isolation plate, a heat insulation cover, a rotating shaft, gear I, motor I, and gear II. The heat insulation cover is fixed to the housing, and the rotating shaft is rotatably connected to the side wall of the heat insulation cover and the side wall of the housing. One end of the isolation plate is connected to the rotating shaft, gear I is connected to the rotating shaft, motor I is fixed to the side wall of the housing, and gear II is connected to the output shaft of motor I. Gear I and gear II mesh, and both gear I and gear II are located inside the heat insulation cover.

[0012] A replacement mechanism is provided on one side of the housing. The replacement mechanism includes a ground rail, a frame, a bidirectional threaded rod, a clamping plate, a motor II, a platform, a KK linear module, an electric push rod, and a mounting frame. The ground rail is fixed to the ground on one side of the housing. The platform is installed on the ground rail, and the KK linear module is installed on the top of the platform. The frame is movably connected to the platform and is connected to the KK linear module. A pair of electric push rods are symmetrically fixed to the frame, and the mounting frame is fixed to the output end of the electric push rod. The bidirectional threaded rod is rotatably connected to the mounting frame through bearings. A pair of clamping plates are symmetrically connected to the mounting frame and are respectively connected to the reverse threads of the bidirectional threaded rod through threads. The clamping plates correspond to the clamping grooves of the support frame.

[0013] The advantages of this utility model compared with the prior art are as follows:

[0014] 1) The dust-removed exhaust gas enters the heat storage chamber I through the exhaust gas inlet pipe. After preheating in heat storage chamber I, it enters the combustion chamber where it undergoes combustion and oxidation, thus purifying the exhaust gas. The purified gas, carrying heat, passes through heat storage chamber II and enters the exhaust pipe, and is then discharged through the chimney. The ceramic heat storage element in heat storage chamber II absorbs and retains the heat carried by the gas, thereby achieving preheating and recovery. At the same time, the air inlet pipe backflushs heat storage chamber III, expelling the residual exhaust gas in heat storage chamber III into the combustion chamber. Indoors; then, the exhaust gas is controlled by an electromagnetic valve to enter the heat storage chamber II through the exhaust gas inlet pipe for preheating, and then enters the combustion chamber for combustion and oxidation, and is discharged through the heat storage chamber III. At the same time, the heat storage chamber I is backflushed with air. The exhaust gas is preheated and then oxidized in turn in this alternating manner. The heat storage chamber IV is a standby chamber. When the ceramic heat storage body needs to be repaired or replaced, the exhaust gas is purified through the heat storage chamber IV in an alternating manner, and the heat storage chamber to be repaired is repaired at the same time, so that the ceramic heat storage body can be repaired and replaced without stopping the machine.

[0015] 2) Motor II is fixed on the frame, and the output shaft of Motor II is connected to one end of the bidirectional threaded rod; the outside of the bidirectional threaded rod is equipped with a bellows protective cover; when the ceramic heat storage body in heat storage chamber I needs to be replaced, firstly, heat storage chamber I is isolated from the combustion chamber by the isolation mechanism, then the sealing door of heat storage chamber I is opened, and then the replacement mechanism is moved to the outside of heat storage chamber I by the ground rail; the electric push rod simultaneously provides power to drive the mounting frame to move, so that the clamping plate moves to the clamping slot corresponding to the ceramic heat storage body to be replaced, and then the bidirectional threaded rod is driven to rotate by the motor II, and the bidirectional threaded rod drives the clamping plate to move through the thread, thereby realizing the clamping of the clamping plate; then the KK linear module drives the frame, bidirectional threaded rod, and clamping plate to move, thereby removing the ceramic heat storage body from heat storage chamber I for replacement; while heat storage chambers II, III, and IV can continue to work, and the replacement can be performed without stopping the device, thereby improving the waste gas treatment efficiency. Attached Figure Description

[0016] Appendix Figure 1 This is a schematic diagram of the structure of a multi-chamber regenerative thermal oxidation combustion treatment device for RTO (Regenerative Thermal Oxidation). Figure 1 ;

[0017] Appendix Figure 2 This is a schematic diagram of the internal structure of an RTO multi-chamber regenerative thermal oxidation combustion treatment device according to this utility model;

[0018] Appendix Figure 3 This is a schematic diagram of the heat storage structure of a multi-chamber regenerative thermal oxidation combustion treatment device for RTO according to this utility model;

[0019] Appendix Figure 4 This is a schematic diagram of the isolation mechanism in a multi-chamber regenerative thermal oxidation combustion treatment device of this utility model;

[0020] Appendix Figure 5 It is attached Figure 4 Enlarged structural diagram of section A in the middle;

[0021] Appendix Figure 6 This is a schematic diagram of the replacement mechanism in a multi-chamber regenerative thermal oxidation combustion treatment device of this utility model;

[0022] Appendix Figure 7 This is a schematic diagram of the structure of the waste gas inlet pipe, the exhaust pipe, and the air inlet pipe in a multi-chamber regenerative thermal oxidation combustion treatment device of this utility model;

[0023] Appendix Figure 8 This is a schematic diagram of the structure of a multi-chamber regenerative thermal oxidation combustion treatment device for RTO (Regenerative Thermal Oxidation). Figure 2 ;

[0024] In the diagram: 1. Housing; 101. Regenerator I; 1011. Support frame; 10111. Clamping slot; 1012. Ceramic regenerator; 102. Regenerator II; 103. Regenerator III; 104. Regenerator IV; 105. Combustion chamber; 1051. Burner; 2. Exhaust gas inlet pipe; 201. Branch pipe I; 3. Exhaust pipe; 301. Branch pipe II; 4. Air inlet pipe; 401. Branch pipe III; 5. Fan; 6. Chimney; 7. Isolation mechanism; 701. Isolation plate; 702. Heat insulation cover; 703. Rotating shaft; 704. Gear I; 705. Motor I; 706. Gear II; 8. Replacement mechanism; 801. Ground rail; 802. Frame; 803. Bidirectional threaded rod; 804. Clamping plate; 805. Motor II; 806. Platform; 807. KK linear module; 808. Electric push rod; 809. Mounting bracket. Detailed Implementation

[0025] To facilitate understanding by those skilled in the art, the following is a detailed explanation in conjunction with the appendix. Figure 1-8 The technical solution of this utility model will be further described in detail below.

[0026] A multi-chamber regenerative thermal oxidation combustion treatment device includes a housing 1, an exhaust gas inlet pipe 2, an exhaust gas outlet pipe 3, an air inlet pipe 4, a fan 5, and a chimney 6. The housing 1 is internally divided into regenerative chambers I 101, II 102, III 103, and IV 104, and a combustion chamber 105. Regenerative chambers I 101, II 102, III 103, and IV 104 are arranged side-by-side below the combustion chamber 105 and are connected to it. A burner 1051 is installed at the top of the combustion chamber 105. The regenerative chambers I 101, II 102, III 103, and IV 104 are... 04. Each unit is equipped with a ceramic heat storage body. The exhaust gas inlet pipe 2, exhaust pipe 3, and air inlet pipe 4 are all located at the bottom of the housing 1, and each of the exhaust gas inlet pipe 2, exhaust pipe 3, and air inlet pipe 4 has several branch pipes I 201, II 301, and III 401 respectively. Branch pipes I 201, II 301, and III 401 are all connected to heat storage chambers I 101, II 102, III 103, and IV 104. Electromagnetic valves are installed on branch pipes I 201, II 301, and III 401. The fan 5 is fixed on the ground and connected to the air inlet pipe 4. The chimney 6 is connected to the exhaust pipe 3, and the exhaust gas... The inlet pipe is connected to the dust collector's pipe; the exhaust gas after dust removal enters the heat storage chamber I 101 through the exhaust gas inlet pipe 2, and then enters the combustion chamber 105 after preheating in the heat storage chamber I 101. Combustion and oxidation occur in the combustion chamber 105, thus purifying the exhaust gas. The purified gas, carrying heat, passes through the heat storage chamber II 102 and enters the outlet pipe 3, and is discharged through the chimney 6. The ceramic heat storage body 1012 in the heat storage chamber II 102 absorbs and stores the heat carried by the gas, thus achieving preheating and recovery. Simultaneously, the air inlet pipe 4 backflushs the heat storage chamber III 103, purifying it. The residual exhaust gas enters and exits the combustion chamber 105; then the exhaust gas enters the heat storage chamber II 102 through the exhaust gas inlet pipe 2 for preheating, and then enters the combustion chamber 105 for combustion and oxidation, and is discharged through the heat storage chamber III 103. At the same time, the heat storage chamber I 101 is backflushed with air. The exhaust gas is preheated and then oxidized in turn. The heat storage chamber IV 104 is a spare chamber. When the ceramic heat storage body 1012 needs to be repaired or replaced, the exhaust gas is purified alternately through the heat storage chamber IV 104. At the same time, the heat storage chamber to be repaired is repaired, so that the ceramic heat storage body 1012 can be repaired and replaced without stopping the machine.

[0027] Each of the heat storage chambers I 101, II 102, III 103, and IV 104 is equipped with a support frame 1011; the support frame 1011 is provided with a clamping groove 10111; the ceramic heat storage body 1012 is installed on the support frame 1011, and the ceramic heat storage body 1012 is divided into several groups, and the several groups of ceramic heat storage bodies 1012 are stacked; this can ensure that the ceramic heat storage body 1012 can work, and also facilitate the disassembly and replacement of the ceramic heat storage body 1012.

[0028] Isolation mechanisms 7 are respectively provided between heat storage chambers I 101, II 102, III 103, and IV 104 and combustion chamber 105. Isolation mechanism 7 includes an isolation plate 701, a heat insulation cover 702, a rotating shaft 703, gear I 704, motor I 705, and gear II 706. The heat insulation cover 702 is fixed to the housing 1, and the rotating shaft 703 is rotatably connected to the side wall of the heat insulation cover 702 and the side wall of the housing 1. One end of the isolation plate 701 is connected to the rotating shaft 703, gear I 704 is connected to the rotating shaft 703, and motor I 705 is fixed to the side wall of the housing 1. Above, gear II 706 is connected to the output shaft of motor I 705; gear I 704 and gear II 706 mesh, and both gear I 704 and gear II 706 are located inside the heat shield 702; motor I 705 provides power to drive gear II 706 to rotate, gear II 706 drives gear I 704 to rotate, and gear I 704 drives the isolation plate 701 to rotate through the rotating shaft, thereby realizing the opening and closing of the isolation plate 701; further facilitating the isolation plate 701 to separate heat storage chamber I 101, heat storage chamber II 102, heat storage chamber III 103, heat storage chamber IV 104 from the combustion chamber 105 respectively.

[0029] A replacement mechanism 8 is provided on one side of the housing 1. The replacement mechanism 8 includes a ground rail 801, a frame 802, a bidirectional threaded rod 803, a clamping plate 804, a motor II 805, a platform 806, a KK linear module 807, an electric push rod 808, and a mounting bracket 809. The ground rail 801 is fixed to the ground on one side of the housing 1. The ground rail 801 is a prior art model, model YDD700-OS-P2300-L166, and is obtained through market purchase or private customization. The platform 806 is installed on the ground rail 801, and the KK linear module 807 is installed on top of the platform 806. The KK linear module 807 is a moving platform driven by a motor. The platform consists of a ball screw and a U-shaped linear guide rail; the KK linear module model is KK10020C-1180A2-F0CS2, obtained through market purchase or private customization; the frame 802 is movably connected to the platform and is connected to the KK linear module; a pair of electric push rods 808 are symmetrically fixed to the frame 802, and the mounting bracket 809 is fixed to the output end of the electric push rod 808; the bidirectional threaded rod 803 is rotatably connected to the mounting bracket 809 through bearings; a pair of clamping plates 804 are symmetrically connected to the mounting bracket 809 and are respectively threaded to the reverse threads of the bidirectional threaded rod 803. 04 corresponds to the clamping groove 10111 of the support frame 1011; the motor II 805 is fixed on the frame, and the output shaft of the motor II 805 is connected to one end of the double-threaded rod 803; the double-threaded rod 803 is provided with a bellows protective cover on the outside; when the ceramic heat storage body 1012 in the heat storage chamber I 101 needs to be replaced, the heat storage chamber I 101 is first isolated from the combustion chamber 105 by the isolation mechanism 7, then the sealing door of the heat storage chamber I 101 is opened, and then the replacement mechanism 8 is moved to the outside of the heat storage chamber I 101 by the ground rail 801; the electric push rod 808 simultaneously provides power to drive the mounting frame 809 to move, so that the clamping plate 804 moves to the position to be replaced. The replacement ceramic heat storage body 1012 is positioned at the clamping slot 10111. Then, the motor II 805 provides power to drive the bidirectional threaded rod 803 to rotate. The bidirectional threaded rod 803 drives the clamping plate 804 to move through the thread, thereby achieving clamping by the clamping plate 804. Then, the KK linear module 807 drives the frame 802, the bidirectional threaded rod 803, and the clamping plate 804 to move, thereby removing the ceramic heat storage body 1012 out of the heat storage chamber I 101 for replacement. Meanwhile, heat storage chambers II 102, III 103, and IV 104 can continue to operate without shutting down the device for replacement, thus improving the waste gas treatment efficiency.

[0030] A multi-chamber regenerative thermal oxidation combustion treatment device (RTO) operates as follows: Dust-removed waste gas enters regenerative chamber I 101 through waste gas inlet pipe 2, is preheated in regenerative chamber I 101, and then enters combustion chamber 105 for combustion oxidation, thereby purifying the waste gas. The purified gas, carrying heat, passes through regenerative chamber II 102 and enters outlet pipe 3, and is discharged through chimney 6. Meanwhile, the ceramic heat storage element 1012 in regenerative chamber II 102 absorbs and stores the heat carried by the gas, thus achieving preheating and recovery. Simultaneously, air inlet pipe 4 backflushes regenerative chamber III 103, further purifying the gas. The residual exhaust gas in heat chamber III 103 enters and exits into combustion chamber 105; then the exhaust gas enters heat storage chamber II 102 through exhaust gas inlet pipe 2 for preheating, and then enters combustion chamber 105 for combustion and oxidation, and is discharged through heat storage chamber III 103. At the same time, heat storage chamber I 101 is backflushed with air. The exhaust gas is preheated and then oxidized in turn in this alternating manner. Heat storage chamber IV 104 is a spare chamber. When the ceramic heat storage body 1012 needs to be repaired or replaced, the exhaust gas is purified alternately through heat storage chamber IV 104. At the same time, the heat storage chamber to be repaired is repaired, which can realize the repair and replacement of ceramic heat storage body 1012 without stopping the machine.

[0031] In the description of this utility model, unless otherwise stated, "a number" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] In summary, the electronic or electrical components, including but not limited to motors, electric actuators, fans, and KK linear modules, are existing components that were custom-made or purchased. The electrical connections between these components are conventional circuit or electrical connections in the prior art and are not within the scope of protection of this utility model.

[0033] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A RTO multi-chamber regenerative thermal oxidation combustion treatment device, comprising a box, a waste gas inlet pipe, an exhaust pipe, an air inlet pipe, a fan, a chimney; characterized in that The internal structure of the chamber consists of regenerator chambers I, II, III, and IV, and a combustion chamber. Regenerator chambers I, II, III, and IV are arranged side-by-side below the combustion chamber and are connected to it. A burner is located at the top of the combustion chamber. Each of the regenerator chambers I, II, III, and IV contains a ceramic regenerator. The exhaust gas inlet pipe, exhaust pipe, and air inlet pipe are located at the bottom of the chamber, and each of these pipes has several branch pipes I, II, and III. Branch pipes I, II, and III are connected to regenerator chambers I, II, III, and IV. Electromagnetic valves are installed on branch pipes I, II, and III. The fan is fixed to the ground and connected to the air inlet pipe. The chimney is connected to the exhaust pipe, and the exhaust gas inlet pipe is connected to the dust collector's duct. A replacement mechanism is provided on one side of the enclosure. The replacement mechanism includes a ground rail, a frame, a two-way threaded rod, a clamping plate, motor II, a platform, a KK linear module, an electric push rod, and a mounting bracket. The ground rail is fixed to the ground on one side of the enclosure. The platform is installed on the ground rail, and the KK linear module is installed on the top of the platform. The frame is movably connected to the platform and connected to the KK linear module. A pair of electric push rods are symmetrically fixed on the frame, and the mounting bracket is fixed to the output end of the electric push rod. The bidirectional threaded rod is rotatably connected to the mounting bracket through bearings. A pair of clamping plates are symmetrically connected to the mounting bracket and are respectively connected to the reverse threads of the bidirectional threaded rod through threads. The clamping plates correspond to the clamping slots of the support frame.

2. The RTO multi-chamber thermal oxidation combustion treatment apparatus according to claim 1, characterized by The heat storage chambers I, II, III, and IV are equipped with support frames, and the support frames are equipped with clamping grooves. The ceramic heat storage bodies are installed on the support frames and are divided into several groups, and the groups of ceramic heat storage bodies are stacked.

3. The RTO multi-chamber regenerative thermal oxidation combustion treatment device according to claim 1, characterized in that... Each of the heat storage chambers I, II, III, and IV is equipped with an isolation mechanism between itself and the combustion chamber. The isolation mechanism includes an isolation plate, a heat insulation cover, a rotating shaft, gear I, motor I, and gear II. The heat insulation cover is fixed to the housing, and the rotating shaft is rotatably connected to the side wall of the heat insulation cover and the side wall of the housing. One end of the isolation plate is connected to the rotating shaft, gear I is connected to the rotating shaft, motor I is fixed to the side wall of the housing, and gear II is connected to the output shaft of motor I. Gear I and gear II mesh, and both gear I and gear II are located inside the heat insulation cover.

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