Three-tower type regenerative thermal oxidizer (RTO) device

Abstract

The utility model provides a three-tower type regenerative thermal oxidizer (RTO) device which comprises a tower body and a purification pipe, the outer side face of the tower body is fixedly connected with an exhaust pipe through a fixing piece, the lower end of the exhaust pipe is communicated with an air outlet combined pipe through a transition pipe, a buffer groove is formed in the fixing piece, and a fastening block is connected in the buffer groove in a sliding mode through a limiting rod. The purification pipe is fixedly connected with a mounting plate through bolts, the upper surface of the mounting plate is fixedly connected with a sealing layer through a groove, the position, opposite to the sealing layer, of the lower surface of the purification pipe is fixedly connected with a sealing ring, the bottom of the purification pipe communicates with the exhaust pipe, and a filtering assembly is fixedly connected into the purification pipe; an absorption layer and an adsorption layer are fixedly connected in the filtering assembly respectively. Through cooperation of the cooling assembly, the purification pipe, the fixing piece and the protective shell, the cleanliness of gas exhausted by the device can be improved, the probability of environmental pollution is reduced, and meanwhile liquid or foreign matter can be prevented from falling into the purification pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment equipment, in particular to a three-tower heat storage RTO device. Background Art

[0002] RTO (regenerative thermal oxidizer) is a highly efficient organic waste gas (VOC) treatment equipment. Compared with traditional catalytic combustion and direct-fired thermal oxidizers (TO), it has the characteristics of high thermal efficiency (≥95%), low operating cost, and the ability to handle large air volume and low-concentration waste gas. When the concentration is slightly higher, it can also perform secondary waste heat recovery, greatly reducing production and operation costs; while RTO (regenerative thermal oxidizer) has an interlocking function to cut off the organic waste gas intake and then directly discharge it from the bypass. The high-temperature exhaust gas is directly mixed with the high-concentration organic waste gas, resulting in an explosion in the exhaust pipe. At the same time, the organic waste gas concentration and waste gas volume will have intermittent changes. Generally, the buffer tank capacity is small, which often leads to unstable RTO operation.

[0003] After searching, a new type of VOCs disposal device based on the collaborative work of RTO and RCO is disclosed in the prior art (application number: CN201920345343.X). The text records that "the symmetrical openings at the bottom ends of both sides of the cabinet are provided with limit grooves, and rollers are provided in the limit grooves. The top opening of the base is provided with a fixed groove matching the cabinet, and the bottom end of the cabinet is located in the fixed groove. A top plate is provided in the base and located at the bottom end of the cabinet. Limit blocks are provided on both sides of the top of the base close to the cabinet. An anti-seismic mechanism is provided at the bottom end of the top plate, and a cabinet door is provided on one side of the cabinet. The cabinet door is connected to the cabinet through a hinge, and a door lock is provided on one side of the cabinet door." The device uses a three-tower furnace instead of a two-tower furnace. The traditional two-tower RTO cannot achieve a high VOCs removal rate due to the exhaust gas short-circuiting phenomenon. The improved three-tower RTO adds a back-blowing link, which can avoid exhaust gas short-circuiting. The three-tower RCO can also avoid the short-circuit phenomenon of exhaust gas, and can realize dual-mode switching operation with the three-tower RTO on the same equipment under the condition of low-concentration organic exhaust gas; and the working method of the device can avoid continuous shutdown accidents caused by catalyst failure. After the catalyst fails, the RTO mode can be applied in a shorter time by adjusting the local structure to ensure that the continuous treatment process of exhaust gas is not affected. However, when the device treats VOCs by combustion, the corresponding dust and odor are easily generated in the gas after combustion. Although the exhaust gas can be treated cleanly, the dust and odor generated after combustion cannot be well resolved, resulting in the actual result of exhaust gas treatment is not very ideal, and it is easy to cause air pollution again. In addition, some heat will still remain in the gas discharged by the device, which will cause the temperature near the exhaust port of the device to be high. At the same time, the opening of the exhaust port lacks a corresponding protective structure, which makes it easy for liquid or foreign matter to fall into the exhaust port. Utility Model Content

[0004] In order to overcome the defects of the prior art, a three-tower thermal storage RTO device is now provided to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose, a three-tower heat storage RTO device is provided, comprising: a tower body and a purification pipe, a combustion chamber and a tower chamber are respectively provided in the tower body, and a burner is arranged on the top of the combustion chamber, and a lower heat storage layer, a catalytic oxidation layer and an upper heat storage layer are respectively arranged in the tower chamber, and at the same time, the bottom of the tower chamber is respectively connected with an air inlet combination pipe, a back-blowing combination pipe and an air outlet combination pipe, the outer side surface of the tower body is fixedly connected to the exhaust pipe through a fixing piece, and the lower end of the exhaust pipe is connected to the air outlet combination pipe through a transition pipe, and a buffer groove is provided in the fixing piece, and a fastening block is slidably connected in the buffer groove through a limit rod, and at the same time, the middle of the exhaust pipe The top of the purification pipe is fixedly connected to the cooling component, and the upper end of the exhaust pipe is fixedly connected to the mounting plate, the purification pipe is fixedly connected to the mounting plate by bolts, the upper surface of the mounting plate is fixedly connected to the sealing layer by a groove, and the lower surface of the purification pipe is fixedly connected to the sealing ring relative to the sealing layer, and the bottom of the purification pipe is communicated with the exhaust pipe, the purification pipe is fixedly connected to the filter component, the filter component is respectively fixedly connected to the absorption layer and the adsorption layer, and the outer side of the purification pipe is fixedly connected to the positioning ring, and the fixing frame is fixedly connected to the outer side of the purification pipe by the positioning ring and bolts, and the protective shell is sleeved on the upper end of the purification pipe through the fixing frame.

[0006] Preferably, the combustion chamber opened at the upper end of the tower body has a prism-shaped structure, and the outer side of the tower body is fixedly connected to two groups of fixing parts, and the fixing parts are composed of a fixing ring and a fixing plate, and the fixing ring has a cylindrical structure, and the fixing plate has a rectangular structure. At the same time, the main fastening layer fixedly connected to the inner arc surface of the fixing ring has a cylindrical structure.

[0007] Preferably, the cooling assembly consists of a cooling cylinder and a partition plate, the cooling cylinder is a cylindrical structure, and the partition plate is fixedly connected to a cooling cavity opened in the cooling cylinder, and the partition plate is a spiral structure, and the upper end of the cooling cylinder is connected to a liquid inlet pipe, and the lower end of the cooling cylinder is connected to a liquid outlet pipe.

[0008] Preferably, the fixing piece is in an A-shaped structure as a whole, and two groups of buffer grooves are symmetrically provided on the inner side of the fixing ring, and the fastening block slidingly connected in the buffer groove is in a square structure, and the side of the fastening block close to the inner cavity of the fixing ring is in an arc-shaped structure, and at the same time, the inner side of the fastening block is fixedly connected to the auxiliary fastening layer, and the auxiliary fastening layer is in a fan-shaped structure.

[0009] Preferably, the outer side surface of the fastening block is symmetrically connected to two groups of limit rods, the axial cross-sections of the two groups of limit rods are T-shaped, and the limit rods are slidably connected in the through hole through a sleeved spring, and the through hole opened on the outer side surface of the fixing ring is connected to the buffer groove, and the axial cross-section of the through hole is a convex structure, and the middle part of the buffer groove is screwed with a fastening bolt through a screw hole.

[0010] Preferably, the purification tube has a cylindrical structure, and the filter assembly fixedly connected in the purification tube consists of three groups of filter screens, and the mesh sizes of the three groups of filter screens in the purification tube gradually increase from top to bottom, and the absorption layer and the adsorption layer are fixedly connected between adjacent filter screens, respectively, and the positioning ring fixedly connected on the outer side of the purification tube has a circular ring structure.

[0011] Preferably, the upper end of the protective shell is a conical structure, the lower end of the protective shell is a cylindrical structure, and the fixing frame fixedly connected to the lower end of the protective shell is a cross-shaped structure as a whole, and the mounting portion of the fixing frame is a circular ring structure, and the mounting portion is fixedly connected to the purification pipe by bolts.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: through the cooperation of the purification tube, the filter component, the adsorption layer and the absorption layer, the gas after combustion will undergo multiple filtering treatments when discharged, which can effectively reduce the dust content in the exhaust gas, and can also effectively reduce the probability of carrying odor in the exhaust gas, and reduce the probability of air pollution. At the same time, through the cooperation of the cooling component and the protective shell, the device can perform corresponding secondary recovery of the residual heat in the exhaust gas, reduce the temperature of the exhaust gas, and the setting of the protective shell can effectively reduce the probability of external liquid or foreign matter falling into the purification tube, ensuring that the purification tube can work normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view schematic diagram of an embodiment of the utility model.

[0014] Figure 2 It is a top view schematic diagram of a fixing member according to an embodiment of the utility model.

[0015] Figure 3 This is a schematic diagram of the disassembled structure of the purification tube according to an embodiment of the utility model.

[0016] Figure 4 For the utility model embodiment Figure 1 An enlarged schematic diagram of point A.

[0017] In the figure: 1. tower body; 2. tower cavity; 3. combustion cavity; 4. burner; 5. air inlet combination pipe; 6. backblowing combination pipe; 7. air outlet combination pipe; 8. exhaust pipe; 9. fixing parts; 10. cooling assembly; 11. mounting plate; 12. purification pipe; 13. fixing frame; 14. protective shell; 15. filter assembly; 16. absorption layer; 17. adsorption layer; 18. limiting rod; 19. fastening block; 20. fastening bolt; 21. auxiliary fastening layer; 22. positioning ring; 23. sealing ring; 24. sealing layer. DETAILED DESCRIPTION

[0018] Reference Figures 1 to 4As shown, the utility model provides a three-tower heat storage RTO device, including: a tower body 1 and a purification pipe 12, a combustion chamber 3 and a tower chamber 2 are respectively provided in the tower body 1, and a burner 4 is arranged on the top of the combustion chamber 3, and a lower heat storage layer, a catalytic oxidation layer and an upper heat storage layer are respectively arranged in the tower chamber 2, and at the same time, the bottom of the tower chamber 2 is respectively connected with an air inlet combination pipe 5, a back-blowing combination pipe 6 and an air outlet combination pipe 7, the outer side of the tower body 1 is fixedly connected to an exhaust pipe 8 through a fixing member 9, and the lower end of the exhaust pipe 8 is connected to the air outlet combination pipe 7 through a transition pipe, and a buffer groove is provided in the fixing member 9, and a fastening block 19 is slidably connected in the buffer groove through a limiting rod 18, and at the same time, the middle part of the exhaust pipe 8 is fixedly connected to a cooling assembly 10, The upper end of the exhaust pipe 8 is fixedly connected to the mounting plate 11, and the purification pipe 12 is fixedly connected to the mounting plate 11 by bolts. The upper surface of the mounting plate 11 is fixedly connected to the sealing layer 24 by a groove, and the lower surface of the purification pipe 12 is fixedly connected to the sealing ring 23 relative to the sealing layer 24, and the bottom of the purification pipe 12 is connected to the exhaust pipe 8, and the purification pipe 12 is fixedly connected to the filter assembly 15, and the filter assembly 15 is respectively fixedly connected to the absorption layer 16 and the adsorption layer 17, and the outer side of the purification pipe 12 is fixedly connected to the positioning ring 22, and the fixing frame 13 is fixedly connected to the outer side of the purification pipe 12 by the positioning ring 22 and bolts, and the protective shell 14 is sleeved on the upper end of the purification pipe 12 through the fixing frame 13.

[0019] In this embodiment, after the organic waste gas is burned by the tower body 1, the burned gas is discharged into the exhaust pipe 8 through the air outlet combination pipe 7. During the flow of the airflow, the solenoid valve of the liquid inlet pipe in the cooling component 10 is first opened, and then the cooling water can flow in a spiral shape in the cooling chamber through the partition plate, so that the airflow can fully exchange heat when passing through the cooling component 10, effectively reducing the temperature of the exhaust gas, and can also assist in reducing the temperature around the purification pipe 12. After that, when the exhaust gas flows into the purification pipe 12, the setting of the filter component 15 can perform multiple filtrations on the exhaust gas, and then there is The content of impurities such as dust in the exhaust gas can be effectively reduced, and the absorption layer 16 located at the lower end of the purification tube 12 is made of gauze cotton material, which can then help improve the dust retention effect, and the adsorption layer 17 is made of activated carbon particles, which can perform corresponding purification treatment on the odor carried in the exhaust gas, thereby improving the cleanliness of the gas after discharge and reducing the probability of gas pollution to the environment. At the same time, the structural setting of the protective shell 14 can not only avoid liquid accumulation, but also reduce the probability of external liquid or foreign matter accidentally falling into the purification tube 12, ensuring that the purification tube 12 can perform normal multiple filtration treatments on the exhaust gas.

[0020] At the same time, the relevant structure and working principle of the combustion treatment of organic waste gas in the tower body 1 in this application are existing mature technologies, which have been fully disclosed in a new VOCs disposal device based on the coordinated work of RTO and RCO (application number: CN201920345343.X).

[0021] As a preferred embodiment, the combustion chamber 3 opened at the upper end of the tower body 1 has a prism-shaped structure, and the outer side of the tower body 1 is fixedly connected to two groups of fixing parts 9, and the fixing parts 9 are composed of a fixing ring and a fixing plate, and the fixing ring has a cylindrical structure, and the fixing plate has a rectangular structure. At the same time, the main fastening layer fixedly connected by the inner arc surface of the fixing ring has a cylindrical structure.

[0022] In this embodiment, if Figure 1 and Figure 2 The structural setting of the combustion chamber 3 can help guide the flow of the organic waste gas, thereby improving the combustion effect of the burner 4 on the organic waste gas. At the same time, the setting of the fixing part 9 can help enhance the fixing effect of the exhaust pipe 8, and can also provide strong support for the protective shell 14, the purification pipe 12 and the cooling assembly 10.

[0023] As a preferred embodiment, the cooling assembly 10 consists of a cooling cylinder and a partition plate. The cooling cylinder has a cylindrical structure, and the partition plate is fixedly connected to the cooling cavity opened in the cooling cylinder, and the partition plate has a spiral structure. The upper end of the cooling cylinder is connected to the liquid inlet pipe, and the lower end of the cooling cylinder is connected to the liquid outlet pipe.

[0024] In this embodiment, if Figure 1 and Figure 4 The cooling chamber is arranged into a continuous spiral structure through a partition plate, which can effectively prolong the contact time between the coolant and the exhaust pipe 8, thereby helping to improve the efficiency of heat exchange between the exhaust pipe 8 and the cooling component 10 and effectively reduce the temperature of the exhaust gas.

[0025] As a preferred embodiment, the fixing member 9 is in an A-shaped structure as a whole, and two groups of buffer grooves are symmetrically provided on the inner side of the fixing ring, and the fastening block 19 slidingly connected in the buffer groove is in a square structure, and the side of the fastening block 19 close to the inner cavity of the fixing ring is in an arc-shaped structure, and at the same time, the inner side of the fastening block 19 is fixedly connected to the auxiliary fastening layer 21, and the auxiliary fastening layer 21 is in a fan-shaped structure.

[0026] In this embodiment, if Figure 2 The sizes of the buffer groove and the fastening block 19 are matched, which can help enhance the stability of the movement of the fastening block 19, and the main fastening layer and the auxiliary fastening layer 21 are both made of soft rubber material, which can effectively enhance the fixing effect of the fixing part 9 on the exhaust pipe 8.

[0027] As a preferred embodiment, the outer side surface of the fastening block 19 symmetrically connects two groups of limit rods 18, the axial cross-sections of the two groups of limit rods 18 are both T-shaped, and the limit rods 18 are slidably connected in the through hole through the sleeve spring, and the through hole opened on the outer side surface of the fixing ring is connected to the buffer groove, and the axial cross-section of the through hole is a convex structure, and the middle part of the buffer groove is screwed with the fastening bolt 20 through the screw hole.

[0028] In this embodiment, if Figure 2 and Figure 4 The setting of the limit rod 18 and the spring ensures that when the fastening bolt 20 does not abut the fastening block 19, the fastening block 19 can automatically return to the buffer groove under the action of the tension spring, thereby releasing the fastening block 19 from fixing the exhaust pipe 8, making it easier to load and unload the exhaust pipe 8.

[0029] As a preferred embodiment, the purification tube 12 has a cylindrical structure, and the filter assembly 15 fixedly connected inside the purification tube 12 is composed of three groups of filter screens, and the mesh sizes of the three groups of filter screens in the purification tube 12 gradually increase from top to bottom, and the absorption layer 16 and the adsorption layer 17 are fixedly connected between adjacent filter screens, respectively, and the positioning ring 22 fixedly connected to the outer side of the purification tube 12 has a circular ring structure.

[0030] In this embodiment, if Figure 3 and Figure 4 The mesh sizes of the three groups of filters of the filter assembly 15 change sequentially, so that the dust and impurities in the exhaust gas can be filtered in batches, thereby effectively reducing the probability of clogging of the filter assembly 15 while ensuring the filtering effect. The setting of the positioning ring 22 facilitates improving the loading and unloading efficiency of the protective shell 14.

[0031] As a preferred embodiment, the upper end of the protective shell 14 is a conical structure, the lower end of the protective shell 14 is a cylindrical structure, and the fixing frame 13 fixedly connected to the lower end of the protective shell 14 is a cross-shaped structure as a whole, and the mounting portion of the fixing frame 13 is a circular ring structure, and the mounting portion is fixedly connected to the purification pipe 12 by bolts.

[0032] In this embodiment, if Figure 2 and Figure 4 The structural setting of the protective shell 14 can not only reduce the probability of foreign matter falling into the purification tube 12, but also prevent foreign matter from being retained on the outer surface of the protective shell 14. At the same time, the structural setting of the fixing frame 13 can help enhance the stability of the connection between the protective shell 14 and the purification tube 12.

[0033] The three-tower heat storage RTO device of the utility model can improve the cleanliness of the gas discharged by the device and reduce the probability of environmental pollution through the cooperation of the cooling component 10, the purification pipe 12, the fixing part 9 and the protective shell 14. At the same time, it can also prevent liquid or foreign matter from falling into the purification pipe 12, and can effectively reduce the heat of the exhaust gas.

Claims

1. A three-tower thermal storage RTO device, comprising: A tower body (1) and a purification pipe (12), wherein a combustion chamber (3) and a tower chamber (2) are respectively provided in the tower body (1), and a burner (4) is arranged at the top of the combustion chamber (3), and a lower heat storage layer, a catalytic oxidation layer and an upper heat storage layer are respectively arranged in the tower chamber (2), and at the same time, the bottom of the tower chamber (2) is respectively connected to an air inlet combination pipe (5), a back-blowing combination pipe (6) and an air outlet combination pipe (7), and is characterized in that: the outer side surface of the tower body (1) is fixedly connected to an exhaust pipe (8) through a fixing member (9), and the lower end of the exhaust pipe (8) is connected to the air outlet combination pipe (7) through a transition pipe, and a buffer groove is provided in the fixing member (9), and a fastening block (19) is slidably connected in the buffer groove through a limiting rod (18), and at the same time, the middle part of the exhaust pipe (8) is fixedly connected to a cooling assembly (10), and the upper end of the exhaust pipe (8) is fixedly connected to The purification pipe (12) is connected to the mounting plate (11), the purification pipe (12) is fixedly connected to the mounting plate (11) by bolts, the upper surface of the mounting plate (11) is fixedly connected to the sealing layer (24) by a groove, and the lower surface of the purification pipe (12) is fixedly connected to the sealing ring (23) at a position relative to the sealing layer (24), and the bottom of the purification pipe (12) is communicated with the exhaust pipe (8), the purification pipe (12) is fixedly connected to the filter assembly (15), and the filter assembly (15) is respectively fixedly connected to the absorption layer (16) and the adsorption layer (17), and the outer side of the purification pipe (12) is fixedly connected to the positioning ring (22), and the fixing frame (13) is fixedly connected to the outer side of the purification pipe (12) by the positioning ring (22) and bolts, and the protective shell (14) is sleeved on the upper end of the purification pipe (12) through the fixing frame (13).

2. A three-tower thermal storage RTO device according to claim 1, characterized in that: The combustion chamber (3) opened at the upper end of the tower body (1) has a prism-shaped structure, and the outer side surface of the tower body (1) is fixedly connected to two groups of fixing parts (9), and the fixing parts (9) are composed of a fixing ring and a fixing plate, and the fixing ring has a cylindrical structure, and the fixing plate has a rectangular structure, and the main fastening layer fixedly connected to the inner arc surface of the fixing ring has a cylindrical structure.

3. A three-tower thermal storage RTO device according to claim 1, characterized in that: The cooling assembly (10) consists of a cooling cylinder and a partition plate, the cooling cylinder is in a cylindrical structure, the partition plate is fixedly connected to a cooling cavity opened in the cooling cylinder, and the partition plate is in a spiral structure, the upper end of the cooling cylinder is connected to a liquid inlet pipe, and the lower end of the cooling cylinder is connected to a liquid outlet pipe.

4. A three-tower thermal storage RTO device according to claim 1, characterized in that: The fixing member (9) is in an A-shaped structure as a whole, and two groups of buffer grooves are symmetrically provided on the inner side surface of the fixing ring, and the fastening block (19) slidably connected in the buffer groove is in a square structure, and the side of the fastening block (19) close to the inner cavity of the fixing ring is in an arc-shaped structure, and at the same time, the inner side surface of the fastening block (19) is fixedly connected to the auxiliary fastening layer (21), and the auxiliary fastening layer (21) is in a fan-shaped structure.

5. A three-tower thermal storage RTO device according to claim 4, characterized in that: The outer side surface of the fastening block (19) is symmetrically connected to two groups of limit rods (18), the axial cross-sections of the two groups of limit rods (18) are both T-shaped structures, and the limit rods (18) are slidably connected in the through hole through a sleeved spring, and the through hole opened on the outer side surface of the fixing ring is connected to the buffer groove, and the axial cross-section of the through hole is a convex structure, and the middle of the buffer groove is screwed with a fastening bolt (20) through a screw hole.

6. A three-tower thermal storage RTO device according to claim 1, characterized in that: The purification pipe (12) is of cylindrical structure. The filter assembly (15) fixedly connected in the purification pipe (12) is composed of three groups of filter screens. The mesh sizes of the three groups of filter screens in the purification pipe (12) gradually increase from top to bottom. Adjacent filter screens are respectively fixedly connected to an absorption layer (16) and an adsorption layer (17). At the same time, a positioning ring (22) fixedly connected to the outer side surface of the purification pipe (12) is of a circular ring structure.

7. A three-tower thermal storage RTO device according to claim 1, characterized in that: The upper end of the protective shell (14) is in a conical structure, the lower end of the protective shell (14) is in a cylindrical structure, and the fixing frame (13) fixedly connected to the lower end of the protective shell (14) is in a cross-shaped structure as a whole, and the mounting portion of the fixing frame (13) is in a circular ring structure, and the mounting portion is fixedly connected to the purification pipe (12) by bolts.

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