Energy recovery equipment for cyclic catalytic oxidation of organic waste gas

Abstract

The utility model relates to the technical field of organic waste gas treatment, and discloses an organic waste gas circulating catalytic oxidation energy recovery device which comprises a treatment box, a gas outlet pipe located on the left side of the treatment box and a gas inlet pipe located on the right side of the treatment box, a cooling box is fixed to the bottom of the treatment box, and cooling liquid is contained in the cooling box. A first bent pipe is arranged in the treatment box and corresponds to the air inlet pipe, a part of the bent pipe is arranged in cooling liquid of the treatment box, the cooling liquid has a higher boiling point and better heat conductivity, water vapor is not prone to being generated, and the good cooling effect is achieved, the first bent pipe is bent back and forth, the bent part is immersed in the cold cutting liquid, and the cooling effect is good. Waste gas is greatly cooled by increasing the contact area with cooling liquid, and the organic waste gas is cooled for the first time through the first bent pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of organic waste gas treatment, in particular to energy recovery equipment for cyclic catalytic oxidation of organic waste gas. Background Art

[0002] Organic waste gas contains a large amount of harmful substances, which will cause harm to the environment if directly discharged into the atmosphere. Recycling organic waste gas through corresponding equipment can help save resources and energy.

[0003] According to a multi-phase oxidation deodorization and ammonia-containing organic waste gas energy recovery device disclosed in the patent website (authorization announcement number: CN216755918U), "a multi-phase oxidation deodorization and ammonia-containing organic waste gas energy recovery device comprises a treatment box, an air inlet pipe located on the right side of the treatment box and an air outlet pipe located on the left side of the treatment box, the air inlet pipe and the air outlet pipe are directly connected and fixed on the treatment box, the air inlet pipe and the air outlet pipe are both provided with electromagnetic valves, a water tank is fixed at the bottom of the treatment box, a water inlet pipe and a drain pipe are provided on the water tank, and the treatment box Several connecting plates are fixed in the middle of the interior, and activated carbon cartridges are slidably installed between the connecting plates. The activated carbon cartridges use existing odor adsorption technology. Graphene plates are fixed to the right side of the treatment box from left to right. The graphene plates are made of graphene material, which has strong thermal conductivity. Extensions are fixed to the bottom of both graphene plates. The extensions are made of graphene material. The bottoms of both extensions pass through the treatment box and extend into the interior of the water tank. Through holes are opened on the surface of both graphene plates, and the two through holes are staggered up and down.

[0004] In view of the above description, the applicant believes that the following problems exist:

[0005] During the use of this utility model, although the extension part of the bottom of the graphene plate extends into the inside of the water tank, the contact area between the water in the water tank and the extension part is limited, and it is difficult for the water to continue to cool the organic waste gas after reaching the boiling point. When the organic waste gas with higher temperature enters the activated carbon cylinder, it may cause the microporous structure of the activated carbon cylinder to be blocked or cause the activated carbon cylinder to burn. Therefore, it is necessary to improve an energy recovery device for the circulating catalytic oxidation of organic waste gas to solve the above problems. Utility Model Content

[0006] In order to overcome the limited contact area between the water in the water tank and the extension, it is difficult for the water to continue to cool the organic waste gas after reaching the boiling point. The higher temperature organic waste gas entering the activated carbon cartridge may cause the microporous structure of the activated carbon cartridge to be blocked or cause the activated carbon cartridge to burn.

[0007] The technical solution of the utility model is: an energy recovery device for the circulating catalytic oxidation of organic waste gas, comprising a treatment box, an outlet pipe located on the left side of the treatment box and an inlet pipe located on the right side of the treatment box, a cooling box fixed to the bottom of the treatment box, the cooling box filled with coolant, a bend pipe 1 corresponding to the inlet pipe in the treatment box, a portion of the bend pipe being in the coolant of the treatment box.

[0008] The cooling box preferably uses coolant rather than water because coolant has a higher boiling point and better thermal conductivity, is less likely to generate water vapor, and has a good cooling effect. Bend pipe 1 has a curved back and forth section, which is partially immersed in the cooling liquid. This increases the contact area with the coolant to significantly cool the exhaust gas, achieving the first cooling of the organic waste gas through bend pipe 1.

[0009] Preferably, a catalyst box is connected to the elbow pipe 1 in the treatment box, and a porous ceramic block is provided in the catalyst box. Rhodium metal is attached to the surface of the ceramic block, and the organic waste gas is catalyzed and oxidized by the rhodium metal.

[0010] Preferably, a second elbow is connected to the left side of the catalytic box, and a portion of the second elbow is in the coolant of the processing box. The gas is cooled twice through the second elbow so that it can enter the filter box later.

[0011] Preferably, the bend pipe 1 and bend pipe 2 include an upper bend pipe and a lower bend pipe, and the upper bend pipe and the lower bend pipe are connected to the bottom of the processing box through threaded connectors. The upper bend pipe and the lower bend pipe here can be fixed to the upper and lower bottoms of the processing box through threaded connectors.

[0012] Preferably, a filter box is connected to the left side of the second elbow, and an air outlet pipe is connected to the left side of the filter box, so that the gas entering the filter box through the second elbow can be discharged from the air outlet pipe.

[0013] Preferably, a carbon plate is provided inside the filter box, and the carbon plate is perpendicular to the length direction of the processing box. The carbon plate arranged perpendicular to the length direction of the processing box is more beneficial to filtering the gas.

[0014] Preferably, the carbon plate is provided with a "convex" shaped connecting block, and a "concave" shaped connecting groove is provided on the box wall. The connecting block can be inserted into the connecting groove, and the connection between the connecting block and the connecting groove facilitates the later replacement of the carbon plate in the filter box.

[0015] Beneficial effects of the utility model:

[0016] 1. The coolant used in the cooling box has a higher boiling point and better thermal conductivity, is less likely to generate water vapor, and has a good cooling effect. The elbow has twists and turns, and these twists are immersed in the cooling liquid. By increasing the contact area with the coolant, the exhaust gas is significantly cooled, and the organic exhaust gas is cooled for the first time through the elbow.

[0017] 2. The gas is cooled for the second time through the second bend to ensure that the carbon plate has a higher adsorption efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a side view of the overall structure of the utility model;

[0019] Figure 2 For this utility model Figure 1 Middle AA section view;

[0020] Figure 3 This is a schematic diagram of the connection structure of the upper bend pipe and the lower bend pipe of the utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the filter box of the utility model;

[0022] Figure 5 For this utility model Figure 4 Schematic diagram of a partial enlargement of area I.

[0023] Explanation of the accompanying drawings: 1. Treatment box; 11. Exhaust pipe; 12. Inlet pipe; 2. Cooling box; 21. Elbow 1; 211. Upper bend; 212. Lower bend; 213. Threaded connector; 214. Threaded surface; 22. Elbow 2; 3. Catalytic box; 31. Ceramic block; 4. Filter box; 41. Box wall; 5. Carbon plate; 51. Connecting block; 411. Connecting groove. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] like Figure 1-Figure 5 As shown:

[0026] See also Figure 1-Figure 2The present utility model provides an embodiment: an energy recovery device for the catalytic oxidation of organic waste gas circulation, comprising a treatment box 1, an outlet pipe 11 located on the left side of the treatment box 1 and an inlet pipe 12 located on the right side of the treatment box 1, a cooling box 2 fixed to the bottom of the treatment box 1, the cooling box 2 is filled with coolant, and a bend 21 is corresponding to the inlet pipe 12 in the treatment box 1, and a portion of the bend 21 is in the coolant of the treatment box 1. The reason why the cooling box 2 uses coolant instead of water is that the coolant has a higher boiling point and better thermal conductivity, is less likely to produce water vapor, and has a good cooling effect. The bend 21 has twists and turns that bend back and forth, and these twists and turns are immersed in the cooling liquid. The waste gas is substantially cooled by increasing the contact area with the coolant, and the first cooling of the organic waste gas is achieved through the bend 21.

[0027] See also Figure 1 In this embodiment, a catalyst box 3 is connected to elbow 1 21 within the treatment box 1. The catalyst box 3 contains a porous ceramic block 31 with rhodium metal attached to its surface. After the initial cooling process, the organic waste gas still has a relatively high temperature. The organic waste gas passes through the catalyst box 3, which contains a porous ceramic block 31 with rhodium metal attached to it. This ceramic block 31 can enhance the activity of the organic waste gas. Under the action of high temperature, the organic waste gas is catalyzed, producing an oxidation-reduction chemical reaction, turning the organic waste gas into a harmless gas. Multiple catalyst boxes 3 can be connected in series to allow the organic waste gas to circulate, catalyze, and oxidize within the multiple catalyst boxes 3.

[0028] See also Figure 1-Figure 2 In this embodiment, the left side of the catalyst box 3 is connected to a second elbow 22, and a portion of the second elbow 22 is immersed in the coolant of the treatment box 1. Since the portion of the second elbow 22 connected to the left side of the catalyst box 3 is immersed in the coolant of the cooling box 2, the second elbow 22 can cool the gas discharged from the catalyst box 3 for a second time, and the coolant in the cooling box 2 will absorb the heat in the gas again. Through the first and second cooling, the heat of the gas is transferred to the coolant, and then the subsequent heat collection device recovers the heat in the coolant for waste heat recovery (WHR) to achieve thermoelectric conversion. The heat collection device and waste heat recovery technology here are existing technologies and will not be described in detail here.

[0029] See also Figure 2-Figure 3In this embodiment, the first bend 21 and the second bend 22 include an upper bend 211 and a lower bend 212, which are connected to the bottom of the processing box 1 via a threaded connector 213. The first bend 21 and the second bend 22 include the upper bend 211 and the lower bend 212. Threaded connecting posts are provided on the upper and lower sides of the bottom of the processing box 1. The connecting posts contain through holes for gas flow, which are not shown in the figure. The upper bend 211 and the lower bend 212 have threaded connectors 213 at one end connected to the connecting posts. The inner side of the threaded connector 213 has a threaded surface 214. By twisting the threaded connector 213, the upper bend 211 or the lower bend 212 can be connected to the upper or lower side of the bottom plate of the processing box 1.

[0030] See also Figure 1 In this embodiment, the left side of the second elbow 22 is connected to a filter box 4, and the left side of the filter box 4 is connected to an outlet pipe 11. After the second temperature drop in the second elbow 22, the gas is poured into the filter box 4 for filtration. The reason for filtering the gas after the second temperature drop is that the filter material of the filter box 4 is a carbon plate 5 with activated carbon. High temperature causes the microporous structure of the activated carbon to be clogged, affecting the filtering effect. Activated carbon can also spontaneously combust at certain high temperatures, affecting production safety.

[0031] See also Figure 4 In this embodiment, a carbon plate 5 is provided inside the filter box 4, and the carbon plate 5 is perpendicular to the length direction of the processing box 1. The carbon plate 5 is perpendicular to the length direction of the processing box 1 and can effectively intercept and filter the gas.

[0032] See also Figure 5 In this embodiment, the carbon plate 5 is provided with a convex connecting block 51, and the box wall 41 is provided with a concave connecting groove 411, into which the connecting block 51 can be inserted. The carbon plate 5 is provided with a connecting block 51, and the box wall 41 is provided with a connecting groove 411. Inserting the connecting block 51 into the connecting groove 411 completes the installation of the carbon plate 5 within the filter box 4. When the carbon plate 5 needs to be replaced, it can be simply pulled out. The filter box 4 is also provided with a lid on top, which is not shown in the figure.

[0033] During operation, high-temperature organic waste gas enters elbow 1 21 from the intake pipe 12. The organic waste gas then enters the section of the intake pipe 12 immersed in the coolant for the first cooling. The organic waste gas after the first cooling enters the catalyst box 3 for catalytic and oxidation reactions. In order to prevent the gas from being too hot when entering the filter box 4, it is cooled again through elbow 2 22 before entering the filter box 4. The gas after the second cooling enters the filter box 4. The gas in the filter box 4 partially passes through the carbon plate 5, and part of it rubs against the surface of the carbon plate 5, filtering the gas again. Finally, the gas is discharged from the outlet pipe 11. When the filter box 4 cannot effectively filter the gas, the old carbon plate 5 can be removed and a new carbon plate 5 can be installed.

[0034] Through the above steps, the high-temperature organic waste gas enters the bend 21 from the intake pipe 12, and then the organic waste gas enters the area of ​​the intake pipe 12 immersed in the coolant for the first cooling. After catalysis, it can be cooled for the second time to solve the problem that the extension of the bottom of the graphene plate extends to the inside of the water tank, but the contact area between the water in the water tank and the extension is limited, and it is difficult for the water to continue to cool the organic waste gas after reaching the boiling point. When the higher temperature organic waste gas enters the activated carbon cartridge, it may cause the microporous structure of the activated carbon cartridge to be blocked or cause the activated carbon cartridge to burn.

Claims

1. An energy recovery device for circulating catalytic oxidation of organic waste gas, comprising a treatment box (1), an outlet pipe (11) located on the left side of the treatment box (1), and an inlet pipe (12) located on the right side of the treatment box (1), characterized in that: A cooling box (2) is fixed at the bottom of the processing box (1), and a coolant is contained in the cooling box (2). In the processing box (1), a bend pipe (21) corresponds to the air inlet pipe (12), and a portion of the bend pipe (21) is in the coolant of the processing box (1).

2. The energy recovery device for circulating catalytic oxidation of organic waste gas according to claim 1 is characterized in that: A catalyst box (3) is connected to the elbow pipe (21) in the treatment box (1). A porous ceramic block (31) is provided in the catalyst box (3), and rhodium metal is attached to the surface of the ceramic block (31).

3. The energy recovery device for circulating catalytic oxidation of organic waste gas according to claim 2 is characterized in that: The left side of the catalytic box (3) is connected to a second elbow (22), and a portion of the second elbow (22) is in the coolant of the processing box (1).

4. The energy recovery device for circulating catalytic oxidation of organic waste gas according to claim 3 is characterized in that: The first bend pipe (21) and the second bend pipe (22) comprise an upper bend pipe (211) and a lower bend pipe (212), and the upper bend pipe (211) and the lower bend pipe (212) are connected to the bottom of the processing box (1) via a threaded connector (213).

5. The energy recovery device for circulating catalytic oxidation of organic waste gas according to claim 4 is characterized in that: The left side of the second curved pipe (22) is connected to a filter box (4), and the left side of the filter box (4) is connected to an air outlet pipe (11).

6. The energy recovery device for circulating catalytic oxidation of organic waste gas according to claim 5 is characterized in that: A carbon plate (5) is provided inside the filter box (4), and the carbon plate (5) is perpendicular to the length direction of the processing box (1).

7. The energy recovery device for circulating catalytic oxidation of organic waste gas according to claim 6, characterized in that: The carbon plate (5) is provided with a convex connecting block (51), and the box wall (41) is provided with a concave connecting groove (411), and the connecting block (51) can be inserted into the connecting groove (411).

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