Multi-valve rotary heat accumulating type oxidation furnace

Abstract

The utility model discloses a multi-valve rotation type heat accumulating type oxidizing furnace, which relates to the technical field of oxidizing furnaces and comprises a bottom plate, an oxidizing furnace body is fixedly mounted on the upper surface of the bottom plate, a filter component is fixedly mounted on the left side of the upper surface of the bottom plate, and a fan is fixedly mounted on the left side of the upper surface of the bottom plate. And the fan is located on the right side of the filtering assembly, an air pipe is fixedly installed at the output end of the fan, a plurality of rotary valves are arranged below the oxidation furnace body and communicate with the air pipe, and a chimney is fixedly installed on the right side of the upper surface of the bottom plate. Waste gas is sucked into the gas collecting box through the fan, particulate matter impurities such as adhesive substances and dust in the waste gas are filtered through the filter screen, damage to the fan is reduced, when the filter screen is cleaned, the gas collecting box is opened through the access door, the handle is held to pull out the inserting block from the inserting groove, fixing of the filter screen is relieved, and the filter screen is cleaned. And the filter screen can be cleaned.

Description

A multi-valve rotary regenerative oxidation furnace Technical Field

[0001] This utility model relates to the field of oxidation furnace technology, specifically to a multi-valve rotary regenerative oxidation furnace. Background Technology

[0002] Regenerative thermal oxidizers (RTOs) oxidize volatile organic compounds (VOCs) into corresponding oxides and water at high temperatures, thereby purifying the waste gas. The purification efficiency reaches over 99%, and the heat recovery efficiency reaches over 95%. They can be applied to industries that are major sources of VOCs, such as petrochemicals, pharmaceuticals, packaging and printing, and coating. Therefore, a multi-valve rotary RTO is needed in the waste gas treatment process.

[0003] Chinese patent document CN210833108U discloses a multi-valve rotary regenerative oxidizer, which adopts a single-box design and is equipped with a rotary valve airflow switching device. This ensures flexible switching of air intake, exhaust, and cleaning in the regenerative compartments to adapt to different working conditions. The device operates stably and is easy to maintain; damage to individual valves will not affect the operation of the entire system. Even if repair is impossible, valve replacement is convenient. The stable operation continuously guarantees VOCs removal efficiency. The gas distribution plate includes an inlet chamber, an outlet chamber, and... The purge chamber is a concentric ring, consisting of an inlet chamber, an outlet chamber, and a purge chamber from the outside in. The outlet chamber is located on the outside of the inlet chamber, and the purge chamber is on the inside. The high temperature of the exhaust gas in the outlet chamber preheats the intake gas in the inlet chamber and the purge gas in the purge chamber, preventing the intake and purge gas temperatures from being too low, which would cause a decrease in heat in the combustion chamber, wasting heat and affecting VOCs removal efficiency. Simultaneously, the inlet and purge chambers cool the exhaust gas in the outlet chamber, preventing it from becoming too hot. This invention helps save energy required for heating low-temperature gases and cooling high-temperature gases, thus reducing energy consumption.

[0004] The existing technology has the following problems:

[0005] When the aforementioned multi-valve rotary regenerative oxidizer introduces waste gas into the combustion chamber for combustion via a fan, the large amount of adhesive substances in the waste gas will cause fan contamination if it directly enters the equipment. Over time, this will damage the fan and affect its service life. Furthermore, current oxidizers typically have a high-temperature bypass pipe installed to directly discharge some of the high-temperature flue gas to control the temperature of the oxidation chamber and regenerator from exceeding the limit. However, the installation of the side high-temperature bypass pipe results in insufficient time for some waste gas to remain in the oxidation chamber, affecting the purification efficiency and reducing its effectiveness. Summary of the Invention

[0006] This invention provides a multi-valve rotary regenerative oxidation furnace to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A multi-valve rotary regenerative oxidizer includes a base plate, an oxidizer body fixedly mounted on the upper surface of the base plate, a filter assembly fixedly mounted on the left side of the upper surface of the base plate, a fan fixedly mounted on the left side of the upper surface of the base plate and located to the right of the filter assembly, an air duct fixedly mounted at the output end of the fan, multiple rotary valves arranged below the oxidizer body and connected to the air ducts, and a chimney fixedly mounted on the right side of the upper surface of the base plate.

[0009] The filtration assembly includes an air collection box, the lower surface of which is fixedly installed on the left side of the upper surface of the base plate, and the input end of the fan is fixedly installed on the left side of the air collection box. A filter frame is provided in the inner cavity of the air collection box, and an air inlet pipe is fixedly installed on the top of the air collection box and communicates with the air collection box. A filter screen is fixedly installed on the lower surface of the filter frame, and the filter screen has a truncated pyramidal structure.

[0010] A bypass pipe is fixedly installed on the right side of the top of the oxidation furnace body, and the other end of the bypass pipe is fixedly installed on the left side of the chimney. A second heat insulation layer is fixedly installed inside the bypass pipe.

[0011] Preferably, two brackets are fixedly installed on the upper surface of the base plate, and the inner cavity of the brackets is fixedly installed with the outer side of the air duct, and the brackets are located on the right side of the fan.

[0012] Preferably, an inspection door is fixedly installed on the front side of the gas collection box by screws.

[0013] Preferably, connecting plates are fixedly installed on both the left and right sides of the inner cavity of the air collection box by screws, and slots are provided on the upper surface of the top of the connecting plates. Horizontal plates are fixedly installed on both the left and right sides of the filter frame, and insert blocks are fixedly installed on the lower surface of the horizontal plates. The outer side of the insert block is inserted into the inner side of the slot.

[0014] Preferably, the slot and the plug are both hexagonal in shape, and the connecting plate is L-shaped.

[0015] Preferably, a handle is fixedly installed on the upper surface of the cross plate.

[0016] Preferably, the bypass pipe has a geometric structure, and the first insulation layer is fixedly installed on the inner side of the second insulation layer. Both the first insulation layer and the second insulation layer are made of high-temperature resistant silicate insulation material.

[0017] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0018] 1. This utility model provides a multi-valve rotary regenerative oxidizer. The exhaust gas is drawn into the gas collection box by a fan. The filter screen filters out the adhesive substances and particulate impurities such as dust in the exhaust gas, reducing damage to the fan. When cleaning the filter screen, the gas collection box is opened through the maintenance door, and the insert is pulled out from the slot by holding the handle to release the filter screen and clean it.

[0019] 2. This utility model provides a multi-valve rotary regenerative oxidizer. By setting a bypass pipe with a geometric structure at the top of the oxidizer body, the residence time of the exhaust gas inside the oxidizer body is extended, solving the problem of insufficient residence time of exhaust gas inside the oxidation chamber and ensuring the oxidation and combustion efficiency of the exhaust gas. The setting of insulation layer one and insulation layer two can play a double insulation role, preventing the bypass pipe from failing due to high temperature oxidation. Both insulation layer one and insulation layer two are made of high temperature resistant silicate insulation material. This material has excellent heat resistance, durability and corrosion resistance, which enables it to maintain stable insulation performance for a long time. It has good insulation effect and low cost, making it suitable for large-scale use. Attached Figure Description

[0020] Figure 1 is a schematic diagram of the structure of this utility model;

[0021] Figure 2 is a schematic diagram of the left-side structure of this utility model;

[0022] Figure 3 is a schematic diagram of the filter assembly structure of this utility model;

[0023] Figure 4 is a schematic diagram of the connecting plate structure of this utility model;

[0024] Figure 5 is a schematic diagram of the filter screen structure of this utility model;

[0025] Figure 6 is a schematic diagram of the bypass pipe structure of this utility model.

[0026] In the diagram: 1. Base plate; 2. Filter assembly; 21. Gas collection box; 22. Filter screen; 23. Air inlet pipe; 24. Inspection door; 25. Connecting plate; 26. Filter frame; 27. Horizontal plate; 28. Handle; 29. ​​Insert block; 210. Slot; 3. Oxidation furnace body; 4. Chimney; 5. Rotary valve; 6. Bypass pipe; 7. Fan; 8. Support; 9. Air duct; 10. Insulation layer one; 11. Insulation layer two. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0028] As shown in Figures 1-6, a multi-valve rotary regenerative oxidizer includes a base plate 1. An oxidizer body 3 is fixedly mounted on the upper surface of the base plate 1. A filter assembly 2 is fixedly mounted on the left side of the upper surface of the base plate 1. A blower 7 is fixedly mounted on the left side of the upper surface of the base plate 1, and the blower 7 is located to the right of the filter assembly 2. An air duct 9 is fixedly mounted at the output end of the blower 7. Multiple rotary valves 5 are arranged below the oxidizer body 3, and the rotary valves 5 are connected to the air duct 9. A chimney 4 is fixedly mounted on the right side of the upper surface of the base plate 1. The filter assembly 2 includes a gas collection box 21, the lower surface of which is flush with the base plate. 1. The left side of the upper surface is fixedly installed, and the input end of the fan 7 is fixedly installed with the left side of the gas collection box 21. The inner cavity of the gas collection box 21 is provided with a filter frame 26. The top of the gas collection box 21 is fixedly installed with an air inlet pipe 23, and the air inlet pipe 23 is connected to the gas collection box 21. The lower surface of the filter frame 26 is fixedly installed with a filter screen 22. The filter screen 22 has a truncated quadrangular structure, with a large effective filtration area, and can collect more impurities. The right side of the top of the oxidizer body 3 is fixedly installed with a bypass pipe 6, and the other end of the bypass pipe 6 is fixedly installed with the left side of the chimney 4. The inner cavity of the bypass pipe 6 is fixedly installed with a heat insulation layer 11.

[0029] The oxidizer body 3 includes a distribution chamber, a heat storage chamber 1, a heat storage chamber 2, a heat storage chamber 3, a combustion chamber, a burner, a ceramic heat storage body, a flow guide baffle, an insulation plate, and support legs.

[0030] During operation, the furnace body is heated by a burner. When the furnace temperature reaches a certain level, the exhaust gas is drawn into the gas collection box 21 by the fan 7. The filter screen 22 filters out adhesive substances and particulate impurities such as dust in the exhaust gas, reducing damage to the fan 7. The filtered gas enters the duct 9 through the fan 7 and then enters the oxidation furnace body 3 through the rotary valve 5 for oxidation and combustion, turning into harmless carbon dioxide and water vapor and releasing a large amount of heat. A bypass pipe 6 is installed at the top of the oxidation furnace body 3 to extend the time the exhaust gas stays inside the oxidation furnace body 3, solving the problem of insufficient residence time of the exhaust gas inside the oxidation chamber and ensuring the oxidation and combustion efficiency of the exhaust gas. Finally, the flue gas is discharged into the chimney 4 through the bypass pipe 6 and then discharged into the atmosphere. The insulation layer 10 is installed to keep the bypass pipe 6 warm and prevent it from failing due to high-temperature oxidation.

[0031] As shown in Figures 1 and 2, two brackets 8 are fixedly installed on the upper surface of the base plate 1, and the inner cavity of the bracket 8 is fixedly installed on the outer side of the air duct 9. The bracket 8 is located on the right side of the fan 7.

[0032] By setting up bracket 8, the air duct 9 can be further supported, thereby improving the stability of the air duct 9 during operation.

[0033] As shown in Figures 1 and 2, an inspection door 24 is fixedly installed on the front side of the air collection box 21 by screws.

[0034] The inspection door 24 facilitates the cleaning and maintenance of the filter screen 22.

[0035] As shown in Figures 2-5, connecting plates 25 are fixedly installed on both the left and right sides of the inner cavity of the air collection box 21 by screws. The upper surface of the top of the connecting plate 25 is provided with a slot 210. Horizontal plates 27 are fixedly installed on both the left and right sides of the filter frame 26. Insertion blocks 29 are fixedly installed on the lower surface of the horizontal plates 27. The outer side of the insertion block 29 is inserted into the inner side of the slot 210.

[0036] When cleaning the filter screen 22, open the air collection box 21 through the inspection door 24, pull out the insert block 29 from inside the slot 210, release the filter screen 22 from its fixation, and then the filter screen 22 can be cleaned.

[0037] As shown in Figures 3-5, both the slot 210 and the insert 29 are hexagonal in shape to prevent the filter frame 26 from moving up and down, so that the insert 29 can only be pulled back and forth. The connecting plate 25 is L-shaped to facilitate the installation of the air collection box 21 and the connecting plate 25.

[0038] As shown in Figures 3-5, a handle 28 is fixedly installed on the upper surface of the horizontal plate 27 to facilitate the movement of the filter frame 26.

[0039] As shown in Figure 6, the bypass pipe 6 has a geometric structure, and the insulation layer 10 is fixedly installed on the inner side of the insulation layer 2 11. Both the insulation layer 10 and the insulation layer 2 11 are made of high-temperature resistant silicate insulation material.

[0040] By setting up insulation layer 10 and insulation layer 2 11, a double insulation function can be achieved, preventing the bypass pipe 6 from failing due to high-temperature oxidation. Both insulation layer 10 and insulation layer 2 11 are made of high-temperature resistant silicate insulation material. This material has excellent heat resistance, durability and corrosion resistance, which enables it to maintain stable insulation performance for a long time. It has good insulation effect and low cost, making it suitable for large-area use.

[0041] The working principle of this utility model is as follows: During use, the furnace body is heated by a burner. When the furnace temperature reaches a certain level, the exhaust gas is drawn into the gas collection box 21 by the fan 7. The filter screen 22 filters out adhesive substances and particulate impurities such as dust in the exhaust gas, reducing damage to the fan 7. The filtered gas enters the air duct 9 through the fan 7 and then enters the oxidation furnace body 3 through the rotary valve 5 for oxidation and combustion, turning into harmless carbon dioxide and water vapor and releasing a large amount of heat. A bypass pipe 6 with a geometric structure is set at the top of the oxidation furnace body 3 to prolong the time that the exhaust gas stays inside the oxidation furnace body 3, solving the problem of exhaust gas stagnation inside the oxidation chamber. To address the issue of insufficient time, the oxidation and combustion efficiency of the exhaust gas is ensured. Finally, the flue gas is discharged into the chimney 4 through the bypass pipe 6 and then into the atmosphere. The insulation layer 10 and the insulation layer 21 provide double insulation, preventing the bypass pipe 6 from failing due to high-temperature oxidation. When cleaning the filter screen 22, the gas collection box 21 is opened through the inspection door 24, and the insert block 29 is pulled out from the slot 210 by holding the handle 28 to release the fixation of the filter screen 22, allowing for cleaning. Both the insulation layer 10 and the insulation layer 21 are made of high-temperature resistant silicate insulation material, which has excellent heat resistance, durability, and corrosion resistance, resulting in good insulation performance.

[0042] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A multi-valve rotary regenerative oxidizer, comprising a bottom plate (1), characterized in that: An oxidation furnace body (3) is fixedly installed on the upper surface of the base plate (1). A filter assembly (2) is fixedly installed on the left side of the upper surface of the base plate (1). A blower (7) is fixedly installed on the left side of the upper surface of the base plate (1), and the blower (7) is located on the right side of the filter assembly (2). A duct (9) is fixedly installed at the output end of the blower (7). Multiple rotary valves (5) are provided below the oxidation furnace body (3), and the rotary valves (5) are connected to the duct (9). A chimney (4) is fixedly installed on the right side of the upper surface of the base plate (1). The filter assembly (2) includes a gas collection box (21), and the lower surface of the gas collection box (21) is flush with the base plate (1). The upper surface is fixedly installed on the left side, and the input end of the fan (7) is fixedly installed on the left side of the gas collection box (21). The inner cavity of the gas collection box (21) is provided with a filter frame (26). The top of the gas collection box (21) is fixedly installed with an air inlet pipe (23), and the air inlet pipe (23) is connected to the gas collection box (21). The lower surface of the filter frame (26) is fixedly installed with a filter screen (22), and the filter screen (22) is in the shape of a truncated pyramid. The right side of the top of the oxidation furnace body (3) is fixedly installed with a bypass pipe (6), and the other end of the bypass pipe (6) is fixedly installed on the left side of the chimney (4). The inner cavity of the bypass pipe (6) is fixedly installed with a second insulation layer (11).

2. The multi-valve rotary regenerative oxidizer according to claim 1, characterized in that: Two brackets (8) are fixedly installed on the upper surface of the base plate (1), and the inner cavity of the bracket (8) is fixedly installed on the outer side of the air duct (9). The bracket (8) is located on the right side of the fan (7).

3. The multi-valve rotary regenerative oxidizer according to claim 1, characterized in that: An inspection door (24) is fixedly installed on the front side of the gas collection box (21) by screws.

4. The multi-valve rotary regenerative oxidizer according to claim 1, characterized in that: The left and right sides of the inner cavity of the gas collection box (21) are fixedly installed with connecting plates (25) by screws. The upper surface of the top of the connecting plate (25) is provided with a slot (210). The left and right sides of the filter frame (26) are fixedly installed with horizontal plates (27). The lower surface of the horizontal plate (27) is fixedly installed with a plug (29). The outer side of the plug (29) is inserted into the inner side of the slot (210).

5. A multi-valve rotary regenerative oxidizer according to claim 4, characterized in that: The slot (210) and the plug (29) are both hexagonal in shape, and the connecting plate (25) is L-shaped.

6. A multi-valve rotary regenerative oxidizer according to claim 4, characterized in that: A handle (28) is fixedly installed on the upper surface of the horizontal plate (27).

7. A multi-valve rotary regenerative oxidizer according to claim 1, characterized in that: The bypass pipe (6) has a geometric structure, and the inner side of the second insulation layer (11) is fixedly installed with the first insulation layer (10). Both the first insulation layer (10) and the second insulation layer (11) are made of high-temperature resistant silicate insulation material.

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