Integrated treatment equipment for high-temperature oil-containing organic waste gas

Abstract

The utility model provides integrated treatment equipment for high-temperature oil-containing organic waste gas, which comprises a heat exchanger and a spray adsorption tower, an air inlet is arranged at the top of the heat exchanger, a heat exchange tube is mounted in the heat exchanger, a sieve plate bubbling area is arranged at the bottom of the heat exchanger and below the heat exchange tube, and the sieve plate bubbling area is communicated with the bottom of the spray adsorption tower. A second spraying pipe is mounted in the spraying adsorption tower, a ceramic filler layer is mounted above the second spraying pipe, a third spraying pipe is mounted above the ceramic filler layer, a wire mesh demisting layer is mounted above the third spraying pipe, and an activated carbon adsorption layer is mounted above the wire mesh demisting layer; the air outlet is formed in the top of the spray adsorption tower and is positioned above the activated carbon adsorption layer. The integrated treatment equipment is reasonable in design and compact in structure, the functions of cooling, oil removal and adsorption are integrated, the number of pretreatment equipment is greatly reduced, the occupied area is reduced, various pretreatment processes are fully integrated, and the resistance of the equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment equipment, and particularly relates to an integrated treatment equipment for high-temperature oily organic waste gas. Background Art

[0002] In the production processes of fields such as automobile parts spraying and curing, and high-temperature paraffin mold release in capacitor manufacturing, high-temperature oily organic waste gas is generated. The composition of this kind of waste gas is relatively complex, containing a large amount of benzene, toluene, xylene, etc., and most of them belong to large-air-volume, medium- and low-concentration organic waste gas. If the direct combustion method is used to treat this part of waste gas, a large amount of energy needs to be consumed. Therefore, when treating this kind of waste gas, the processes of activated carbon adsorption or zeolite molecular sieve adsorption are usually adopted for treatment.

[0003] Currently, when treating this kind of waste gas, activated carbon adsorption or zeolite molecular sieve adsorption is adopted. The treatment system usually needs to be equipped with heat exchangers and supporting cooling towers, oil mist purifiers, spray towers, activated carbon adsorbers and other equipment. When configuring these equipment, the floor area is large and the one-time investment is very high. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides an integrated treatment equipment for high-temperature oily organic waste gas, which integrates cooling, oil removal, spray washing and activated carbon adsorption. By optimizing the pretreatment structure, various pretreatment processes are fully integrated to reduce the equipment resistance and improve the cooling and oil removal effects of the equipment.

[0005] To achieve the above technical solution, the utility model provides an integrated treatment equipment for high-temperature oily organic waste gas, including: a heat exchanger and a spray adsorption tower. An air inlet is arranged at the top of the heat exchanger, and heat exchange tubes are installed in the heat exchanger. A sieve plate bubbling area is arranged below the heat exchange tubes at the bottom of the heat exchanger, and the sieve plate bubbling area is communicated with the bottom of the spray adsorption tower. A second spray pipe is installed in the spray adsorption tower, a ceramic packing layer is installed above the second spray pipe, a third spray pipe is installed above the ceramic packing layer, a wire mesh demisting layer is installed above the third spray pipe, and an activated carbon adsorption layer is installed above the wire mesh demisting layer. An air outlet is arranged at the top of the spray adsorption tower and above the activated carbon adsorption layer.

[0006] In the above technical solution, during actual operation, the high-temperature oil-containing organic waste gas to be treated enters the heat exchanger from the air inlet at the top of the heat exchanger for heat exchange, and is cooled by the heat exchange tubes inside the heat exchanger. The high-temperature oil-containing organic waste gas then enters the sieve plate bubbling area at the bottom of the heat exchanger. In the sieve plate bubbling area, water sprayed from bottom to top mixes with the flue gas, generating a large amount of foam on the sieve plate, adsorbing the oil-containing substances and further reducing the temperature. The flue gas that has undergone spray de-oiling pretreatment enters the spray area of the spray adsorption tower, and is further sprayed for cooling and de-oiling through the second spray pipe. It then passes upward through the ceramic packing layer. On the surface of the packing, the gas-liquid two-phase close contact performs mass transfer absorption, removing some of the harmful substances in the organic waste gas. The flue gas is then sprayed and absorbed again through the third spray pipe, and then dehydrated and demisted through the wire mesh demisting layer before entering the activated carbon adsorption layer. After being adsorbed by the activated carbon in the activated carbon adsorption layer, it is discharged from the air outlet at the top of the spray adsorption tower.

[0007] Preferably, an environmentally friendly air conditioner is installed outside the heat exchanger and is connected to the heat exchanger. During operation, the environmentally friendly air conditioner uses its own evaporative cooling system to keep the cooling air below ambient temperature, thereby further enhancing the heat exchange effect. The environmentally friendly air conditioner is activated through a temperature control instrument and PLC control. During actual operation, the environmentally friendly air conditioner automatically starts when the exhaust gas inlet temperature and the cooled air outlet temperature are set, achieving energy conservation.

[0008] Preferably, a sieve plate is installed in the sieve plate bubbling area, and the sieve plate is installed at the bottom of the heat exchanger and below the heat exchange tube. A first spray pipe is installed below the sieve plate and is arranged upwardly facing the sieve plate. During actual operation, spray water is sprayed from the first spray pipe from bottom to top and mixed with the flue gas at the outlet of the sieve plate, generating a large amount of foam on the sieve plate, absorbing oil-containing substances, and further reducing the temperature.

[0009] Preferably, a circulating water tank is installed on the outside of the spray adsorption tower, and the circulating water tank is connected to the first spray pipe, the second spray pipe and the third spray pipe through pipes respectively. The spray water is pressurized by a water pump in the circulating water tank and sprayed down from the top of the tower, and finally flows back to the bottom of the tower for recycling.

[0010] Preferably, the outer wall of the heat exchanger is further provided with a heat dissipation exhaust port, through which the heat in the heat exchanger can be discharged outward in a timely manner to enhance the heat exchange effect of the heat exchanger.

[0011] The beneficial effects of the integrated treatment equipment for high-temperature oil-containing organic waste gas provided by the utility model are: the integrated treatment equipment for high-temperature oil-containing organic waste gas is reasonably designed and compact in structure, and integrates the cooling, oil removal and adsorption functions into one, greatly reducing the number of pretreatment equipment, reducing floor space, modular installation, simple and easy operation, and fully integrating various pretreatment processes, reducing equipment resistance, and improving the cooling and oil removal effects of the equipment. Brief Description of the Drawings

[0012] Figure 1 This is the top view of the present utility model.

[0013] Figure 2 is Figure 1 the sectional view taken along A - A in

[0014] Figure 3 is Figure 1 the sectional view taken along B - B in

[0015] In the figure: 1, heat exchanger; 2, environmental protection air conditioner; 3, spray adsorption tower; 4, circulation water tank; 5, air inlet; 6, air outlet; 7, sieve plate; 8, first spray pipe; 9, second spray pipe; 10, ceramic packing layer; 11, third spray pipe; 12, wire mesh demister layer; 13, activated carbon adsorption layer; 14, heat exchange tube; 15, heat dissipation air outlet. Detailed Embodiment

[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0017] Embodiment: An integrated treatment equipment for high - temperature oil - containing organic waste gas.

[0018] Refer to Figures 1 to 3As shown in the figure, an integrated treatment device for high-temperature oil-containing organic waste gas includes: a heat exchanger 1, an environmental protection air conditioner 2, a spray adsorption tower 3 and a circulation water tank 4. An air inlet 5 is provided at the top of the heat exchanger 1, and heat exchange tubes 14 are installed in the heat exchanger 1. During actual operation, the high-temperature oil-containing organic waste gas to be treated enters the heat exchanger 1 from the air inlet 5 at the top of the heat exchanger 1, and the high-temperature oil-containing organic waste gas is cooled through the heat exchange tubes 14 in the heat exchanger 1. A sieve plate bubbling area is provided below the heat exchange tubes 14 at the bottom of the heat exchanger 1. A sieve plate 7 is installed in the sieve plate bubbling area. The sieve plate 7 is installed at the bottom of the heat exchanger 1 and is located below the heat exchange tubes 14. A first spray pipe 8 is installed below the sieve plate 7 and is arranged upwardly facing the sieve plate 7. During actual operation, the spray water sprays upward from the first spray pipe 8 and mixes with the flue gas at the outlet of the sieve plate 7, generating a large amount of foam on the sieve plate 7, adsorbing the oil-containing substances, and further reducing the temperature. The environmental protection air conditioner 2 is installed outside the heat exchanger 1, and the environmental protection air conditioner 2 is communicated with the heat exchanger 1. During actual operation, the environmental protection air conditioner 2 can make the cooling air lower than the normal-temperature air through its own evaporation cooling system, better enhancing the heat exchange effect. The environmental protection air conditioner 2 is controlled to start through a temperature control instrument and a PLC. During actual operation, the inlet air temperature of the waste gas and the outlet air temperature after cooling are set, and the environmental protection air conditioner is automatically turned on to achieve the purpose of energy conservation. A heat dissipation air outlet 15 is further provided on the outer wall of the heat exchanger 1, and the heat in the heat exchanger 1 can be timely discharged to the outside through the heat dissipation air outlet 15 to enhance the heat exchange effect of the heat exchanger 1.

[0019] The bubble area of the sieve plate is connected to the bottom of the spray adsorption tower 3. A second spray pipe 9 is installed in the spray adsorption tower 3. Above the second spray pipe 9, a ceramic packing layer 10 is installed. Above the ceramic packing layer 10, a third spray pipe 11 is installed. Above the third spray pipe 11, a wire mesh demister layer 12 is installed. Above the wire mesh demister layer 12, an activated carbon adsorption layer 13 is installed. The air outlet 6 is arranged at the top of the spray adsorption tower 3 and above the activated carbon adsorption layer 13. The activated carbon in the activated carbon adsorption layer 13 is filled and arranged in a drawer-type activated carbon box, and the number of drawers is reasonably arranged according to the treatment air volume. During actual operation, the ceramic packing layer 10 is installed on the packing support plate, and the packing is placed on the support plate in a random packing manner. Above the packing, a packing pressing plate is installed to prevent it from being blown by the upward airflow. The spray liquid is sprayed from the second spray pipe 9 onto the packing of the ceramic packing layer 10 and flows down along the surface of the packing. The waste gas is sent from the bottom of the tower and passes continuously through the voids of the packing layer in countercurrent with the liquid. On the surface of the packing, the gas-liquid two phases are in close contact for mass transfer and absorption. After the waste gas is absorbed, it enters the activated carbon adsorption layer 13 after being dehydrated and demisted by the wire mesh demister layer 12, and is discharged from the air outlet 6 at the top of the spray adsorption tower 3 after being adsorbed by the activated carbon in the activated carbon adsorption layer 13. The circulation water tank 4 is installed outside the spray adsorption tower 3. The circulation water tank 4 is respectively connected to the first spray pipe 8, the second spray pipe 9 and the third spray pipe 11 through pipelines. The spray water is pressurized by a water pump in the circulation water tank 4 and sprayed down from the top of the tower, and finally returns to the bottom of the tower for recycling.

[0020] This integrated treatment equipment for high-temperature oily organic waste gas is reasonably designed and compact in structure. It combines the functions of cooling, oil removal and adsorption, greatly reducing the number of pretreatment equipment, reducing the floor area, and modular installation, which is simple and easy. Moreover, various pretreatment processes are fully integrated to reduce the equipment resistance and improve the cooling and oil removal effects of the equipment. During actual operation, the high-temperature oily organic waste gas to be treated enters the heat exchanger 1 through the air inlet 5 at the top of the heat exchanger 1 for heat exchange. The high-temperature oily organic waste gas is cooled by the heat exchange pipes 14 in the heat exchanger 1, and then enters the bubble area of the sieve plate at the bottom of the heat exchanger 1. In the bubble area of the sieve plate, the spray water sprays upward from the first spray pipe 8 and mixes with the flue gas at the outlet of the sieve plate 7, generating a large amount of foam on the sieve plate 7 to adsorb the oily substances and further reduce the temperature. The flue gas pretreated by spray oil removal enters the spray area of the spray adsorption tower 3, is further cooled and deoiled by the second spray pipe 9, then passes upward through the ceramic packing layer 10. On the surface of the packing, the gas-liquid two phases are in close contact for mass transfer and absorption to remove some harmful substances in the organic waste gas, then is sprayed and absorbed again by the third spray pipe 11, then enters the activated carbon adsorption layer 13 after being dehydrated and demisted by the wire mesh demister layer 12, and is discharged from the air outlet 6 at the top of the spray adsorption tower 3 after being adsorbed by the activated carbon in the activated carbon adsorption layer 13.

[0021] The above is the preferred embodiment of the present utility model, but the present utility model should not be limited to the content disclosed in this embodiment and the drawings. Therefore, all equivalent or modified implementations completed without departing from the spirit disclosed by the present utility model fall within the protection scope of the present utility model.

Claims

1. An integrated treatment equipment for high-temperature oily organic waste gas, characterized in that Including: A heat exchanger and a spray adsorption tower. An air inlet is provided at the top of the heat exchanger. Heat exchange tubes are installed inside the heat exchanger. A sieve plate bubbling zone is provided below the heat exchange tubes at the bottom of the heat exchanger. The sieve plate bubbling zone is communicated with the bottom of the spray adsorption tower. A second spray pipe is installed inside the spray adsorption tower. A ceramic packing layer is installed above the second spray pipe. A third spray pipe is installed above the ceramic packing layer. A wire mesh demisting layer is installed above the third spray pipe. An activated carbon adsorption layer is installed above the wire mesh demisting layer. An air outlet is provided at the top of the spray adsorption tower and above the activated carbon adsorption layer.

2. The integrated treatment equipment for high-temperature oily organic waste gas according to claim 1, wherein: An environmental protection air conditioner is installed outside the heat exchanger, and the environmental protection air conditioner is communicated with the heat exchanger.

3. The integrated treatment equipment for high-temperature oily organic waste gas according to claim 1, characterized in that: A sieve plate is installed inside the sieve plate bubbling zone. The sieve plate is installed at the bottom of the heat exchanger and below the heat exchange tubes. A first spray pipe is installed below the sieve plate and facing the sieve plate upward.

4. The integrated treatment equipment for high-temperature oily organic waste gas according to claim 3, characterized in that: A circulating water tank is installed outside the spray adsorption tower. The circulating water tank is connected to the first spray pipe, the second spray pipe and the third spray pipe through pipelines respectively.

5. The integrated treatment equipment for high-temperature oily organic waste gas according to claim 1, characterized in that: A heat dissipation air outlet is further provided on the outer wall of the heat exchanger.

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