Non-edible vegetable oil processing waste gas treatment equipment

Abstract

The present application relates to waste gas treatment technical field, specifically to a kind of non-edible vegetable oil processing waste gas treatment equipment, including lye spraying component for the neutralization of fatty acid and acidic gas in waste gas, drying component is to dry waste gas after neutralization, catalytic combustion component is used to treat dry waste gas, remove organic matter, condensing component is used to cool high-temperature waste gas after catalytic combustion, filtration adsorption component is used to carry out again adsorption filtration to the waste gas after cooling;The non-edible vegetable oil processing waste gas treatment equipment is provided with the spraying cylinder with water pump, realizes that lye circulates and sprays to enter inside waste gas preliminary neutralization, then reduces lye atomization discharge under the cooperation of adsorption cotton, waste gas is dried into drying box, high-temperature combustion of waste gas is carried out into catalytic combustion furnace, high-concentration waste gas is decomposed into carbon dioxide and water, waste gas after combustion is cooled in condensing box and finally filtered from filter box and discharged, reduce direct emission pollution surrounding environment.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, specifically to a waste gas treatment device for non-edible vegetable oil processing. Background Technology

[0002] Non-edible vegetable oil processing mainly utilizes non-edible oils such as tung oil, castor oil, and waste animal and vegetable oils to produce biodiesel, bio-aviation kerosene, bioplastics, lubricants, and cosmetic raw materials through advanced processes; However, the processing of non-edible vegetable oils generates waste gas, which mainly includes volatile organic compounds (VOCs), oil particles, aldehydes and ketones, fatty acids, sulfur-containing compounds (such as hydrogen sulfide), and ammonia. These gases are characterized by strong odors, complex compositions, and high temperatures. Direct emissions pollute the environment and require waste gas treatment to reduce the impact of odors and sulfur-containing compound emissions. When waste gas is washed with alkaline solution, it is not convenient to recycle the alkaline solution, and the loss of atomized alkaline solution after spraying is reduced. The waste gas after catalytic combustion is condensed to avoid high-temperature emissions that pollute the surrounding environment. Summary of the Invention

[0003] The purpose of this invention is to provide a waste gas treatment device for non-edible vegetable oil processing to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A waste gas treatment device for non-edible vegetable oil processing includes an alkaline spray assembly, which is used to neutralize fatty acids and acidic gases in the waste gas. The alkaline spray assembly includes a spray cylinder with a top cover inserted into the top of the spray cylinder. The top cover is provided with a gas guide pipe for guiding the direction of the waste gas. A drying assembly dries the neutralized exhaust gas. The drying assembly is installed at the end of the alkaline spray assembly and includes a drying box. A catalytic combustion assembly is used to treat dried exhaust gas and remove organic matter. The catalytic combustion assembly is installed at the end of the drying assembly and includes a catalytic combustion furnace. The condensing assembly is used to cool the high-temperature exhaust gas after catalytic combustion. The condensing assembly is installed at the end of the catalytic combustion assembly and includes a condensing box and a curved tube installed inside the condensing box. The filter adsorption assembly is used to further adsorb and filter the cooled exhaust gas. The filter adsorption assembly is installed at the end of the condenser assembly and includes a filter box.

[0005] Furthermore, an air inlet pipe is provided in the middle of the outer wall of the spray cylinder, a drain pipe is provided near the bottom of the outer wall of the spray cylinder, a butterfly valve is provided on the drain pipe, a water pump is also provided on the outer wall of the spray cylinder, the water pump's pumping pipe extends into the interior of the spray cylinder, and a spray ring pipe is provided at the drain end of the water pump.

[0006] In this invention, the air inlet pipe is connected to an external non-edible vegetable oil processing waste gas conveying pipeline to guide the waste gas into the spray cylinder. The drain pipe helps to discharge and replace the alkaline solution stored inside for spraying. The water pump is electrically connected to an external power source via a wire. The control switch on the outer wall controls the water pump to start, realizing the circulation and spraying of the alkaline solution inside. The spray ring pipe extends into the spray cylinder, and several nozzles are fitted on the spray ring pipe to help to spray the inside evenly, allowing the sprayed alkaline solution to fully contact the waste gas and neutralize the fatty acids and acidic gases in the waste gas.

[0007] Specifically, a limiting ring is provided on the inner wall of the spray cylinder near the top, a tray is provided on the limiting ring, several perforations are opened on the tray, absorbent cotton is provided above the tray, the top cover is inserted into the top of the spray cylinder, and an air guide pipe is provided on the top of the top cover, the end of the air guide pipe is connected to the inner wall of the drying chamber.

[0008] In this invention, the outer wall of the limiting ring is fixed to the spray cylinder by bolts. The limiting ring provides a force point, which helps the tray to be installed. With the cooperation of multiple perforations, it helps the filtered and adsorbed alkaline solution to fall into the spray cylinder. The adsorbent cotton prevents the atomized alkaline solution from being discharged from the air guide pipe, thus avoiding waste. The air guide pipe guides the neutralized waste gas into the drying chamber.

[0009] It should be noted that the drying chamber is equipped with drying cotton inside, the top of the drying chamber is equipped with a first sealing cover, the lower surface of the first sealing cover is equipped with a first rubber gasket, and a guide pipe is provided at the right end of the drying chamber near the top, and each guide pipe is equipped with a one-way valve.

[0010] In this invention, the width of the outer wall of the first rubber pad is adapted to the width of the inner wall of the drying chamber. The first sealing cover is bonded and fixed to the first rubber pad, which increases the sealing performance of the combination of the first sealing cover and the drying chamber. With the help of the drying cotton, it helps to dry the exhaust gas entering the chamber. With the help of the one-way valve, the exhaust gas enters the catalytic combustion furnace from the guide pipe in one direction, avoiding the influence of gas backflow.

[0011] Specifically, the end of the guide pipe extends into the interior of the catalytic combustion furnace, which is equipped with several igniters. Each igniter has a nozzle connected to an external oxygen pipe. A guide pipe for internal exhaust is also provided on one side of the catalytic combustion furnace.

[0012] In this invention, multiple igniters work together to facilitate combustion. An external oxygen pipe continuously supplies oxygen to the nozzle, which helps the sealed catalytic combustion furnace to catalytically combust the passing waste gas. The high-concentration waste gas is decomposed into carbon dioxide and water, and the combusted waste gas is discharged from the guide pipe.

[0013] Secondly, the guide tube extends to the condenser box, the left end of the curved tube is inserted into the guide tube and fixed by bolts, the right end of the curved tube extends into the filter box, the top of the condenser box is provided with a liquid inlet pipe, and the bottom of the front end face of the condenser box is provided with a liquid drain pipe.

[0014] In this invention, the inlet pipe, the outlet pipe, and the condenser are integrally formed, and both the inlet pipe and the outlet pipe are equipped with sealing plugs at their ends. When the sealing plug on the inlet pipe is opened, coolant is filled into the condenser. The coolant wraps around the curved pipe, which helps to cool the inside of the curved pipe through the exhaust gas. After a period of continuous use, the sealing plug on the outlet pipe is opened, which helps to replace the internal coolant.

[0015] It is worth noting that the filter box is equipped with several activated carbon filter cottons inside, the top of the filter box is equipped with a second sealing cover, the lower surface of the second sealing cover is equipped with a second rubber gasket, and the middle of the right end of the filter box is equipped with a discharge pipe.

[0016] In this invention, the width of the outer wall of the second rubber pad is adapted to the width of the inner wall of the filter box. The second rubber pad is bonded and fixed to the second sealing cover, and the second sealing cover is fixed to the filter box by bolts, which increases the stability of the installation of the second sealing cover and the filter box. With the cooperation of multiple activated carbon filter cotton, it helps to filter and adsorb the cooled exhaust gas and reduce the discharge of particulate matter.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention uses a spray cylinder equipped with a water pump, filled with alkaline solution, to achieve alkaline solution circulation spraying to initially neutralize the incoming waste gas. Then, with the help of adsorption cotton, the alkaline solution is reduced from atomization and discharge. The waste gas then enters a drying chamber to dry, and then enters a catalytic combustion furnace for high-temperature combustion. The high-concentration waste gas is decomposed into carbon dioxide and water. The combusted waste gas enters a condensation chamber for cooling and is finally filtered out from a filter box, reducing direct emissions and pollution to the surrounding environment.

[0018] 2. This invention facilitates the discharge and replacement of alkaline solution inside the spray cylinder by setting a drain pipe with a butterfly valve. With the cooperation of the first rubber gasket, the sealing performance of the combination of the first sealing cover and the drying box is increased. With the cooperation of the second rubber gasket, the sealing performance of the combination of the second sealing cover and the filter box is increased. The combination of the one-way valve and the guide pipe avoids the influence of gas backflow inside the catalytic combustion furnace. The curved pipe increases the contact area with the coolant inside the condenser, which facilitates cooling. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the spray cylinder structure of the present invention; Figure 3 This is a schematic diagram of the drying oven structure of the present invention; Figure 4 This is a schematic cross-sectional view of the catalytic combustion furnace of the present invention; Figure 5 This is a schematic diagram of the combination of the condenser and filter box of the present invention; Figure 6 This is a schematic diagram of the overall cross-sectional structure of the present invention.

[0020] The meanings of the labels in the diagram are as follows: 1. Spray cylinder; 10. Water pump; 100. Spray ring pipe; 11. Drain pipe; 110. Butterfly valve; 12. Air inlet pipe; 13. Limiting ring; 14. Tray; 140. Perforation; 141. Absorbent cotton; 15. Top cover; 150. Air guide pipe; 2. Drying oven; 20. Drying cotton; 21. First sealing cover; 210. First rubber gasket; 22. Guide tube; 220. One-way valve; 3. Catalytic combustion furnace; 30. Guide pipe; 31. Ignition device; 4. Condenser; 40. Curved tube; 41. Liquid inlet pipe; 42. Liquid drain pipe; 5. Filter box; 50. Second sealing cover; 51. Second rubber gasket; 52. Activated carbon filter cotton; 53. Discharge pipe. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-6 This embodiment provides a technical solution: A waste gas treatment device for non-edible vegetable oil processing includes an alkaline spray assembly. The alkaline spray assembly is used to neutralize fatty acids and acidic gases in the waste gas. The alkaline spray assembly includes a spray cylinder 1, a top cover 15 is inserted into the top of the spray cylinder 1, and a guide pipe 150 for guiding the waste gas is provided on the top cover 15. Furthermore, an air inlet pipe 12 is provided in the middle of the outer wall of the spray cylinder 1, a drain pipe 11 is provided near the bottom of the outer wall of the spray cylinder 1, a butterfly valve 110 is provided on the drain pipe 11, a water pump 10 is also provided on the outer wall of the spray cylinder 1, the water pump 10's water pump pipe extends into the interior of the spray cylinder 1, and a spray ring pipe 100 is provided at the drain end of the water pump 10.

[0023] In this invention, the air inlet pipe 12 is connected to an external non-edible vegetable oil processing waste gas conveying pipeline to guide the waste gas into the spray cylinder 1. The drain pipe 11 helps to discharge and replace the alkaline solution stored inside for spraying. The water pump 10 is electrically connected to an external power source through a wire. The control switch on the outer wall controls the water pump 10 to start, realizing the circulation spraying of alkaline solution inside. The spray ring pipe 100 extends into the interior of the spray cylinder 1, and several nozzles are fitted on the spray ring pipe 100 to help to spray the interior evenly, allowing the sprayed alkaline solution to fully contact the waste gas, neutralize the fatty acids and acidic gases in the waste gas, and treat sulfur-containing compounds to remove odors.

[0024] Specifically, a limiting ring 13 is provided on the inner wall of the spray cylinder 1 near the top, a tray 14 is provided on the limiting ring 13, several perforations 140 are opened on the tray 14, an absorbent cotton 141 is provided on the tray 14, the top cover 15 is inserted into the top of the spray cylinder 1, and an air guide pipe 150 is provided on the top of the top cover 15. The end of the air guide pipe 150 is connected to the inner wall of the drying oven 2.

[0025] In this invention, the outer wall of the limiting ring 13 is fixed to the spray cylinder 1 by bolts. The limiting ring 13 provides a force point, which helps to install the tray 14. With the cooperation of multiple perforations 140, it helps to filter and adsorb the alkaline solution into the spray cylinder 1. The adsorbent cotton 141 prevents the atomized alkaline solution from being discharged from the air guide pipe 150, which would cause waste. The air guide pipe 150 guides the neutralized waste gas into the drying box 2.

[0026] Among them, the drying component dries the neutralized waste gas. The drying component is installed at the end of the alkaline spray component and includes a drying box 2. It should be noted that the drying chamber 2 is equipped with drying cotton 20 inside, the top of the drying chamber 2 is equipped with a first sealing cover 21, the lower surface of the first sealing cover 21 is equipped with a first rubber pad 210, and the right end of the drying chamber 2 is equipped with a guide pipe 22 near the top, and each guide pipe 22 is equipped with a one-way valve 220.

[0027] In this invention, the width of the outer wall of the first rubber pad 210 is adapted to the width of the inner wall of the drying chamber 2. The first sealing cover 21 is bonded and fixed to the first rubber pad 210, which increases the sealing performance of the combination of the first sealing cover 21 and the drying chamber 2. With the cooperation of the drying cotton 20, it helps to dry the exhaust gas entering the interior. With the cooperation of the one-way valve 220, the exhaust gas enters the catalytic combustion furnace 3 from the guide pipe 22 in one direction, avoiding the influence of gas backflow.

[0028] Secondly, the first sealing cover 21 is fixed to the drying box 2 by bolts, which increases the stability of the installation. The bolts can be removed to facilitate the separation of the first sealing cover 21 and the removal and replacement of the internal drying cotton 20.

[0029] It is worth adding that the catalytic combustion component is used to treat the dried exhaust gas and remove organic matter. The catalytic combustion component is installed at the end of the drying component and includes a catalytic combustion furnace 3. Specifically, the end of the guide pipe 22 extends into the interior of the catalytic combustion furnace 3. The catalytic combustion furnace 3 is equipped with several igniters 31. Each igniter 31 is equipped with a nozzle that connects to an external oxygen pipe. The catalytic combustion furnace 3 is also equipped with a guide pipe 30 for internal exhaust on one side.

[0030] In this invention, multiple igniters 31 work together to facilitate combustion. Oxygen is continuously supplied to the nozzle from an external oxygen pipe, which helps the sealed catalytic combustion furnace 3 to catalytically combust the passing waste gas. The high-concentration waste gas is decomposed into carbon dioxide and water, and the combusted waste gas is discharged from the guide pipe 30.

[0031] Among them, the bottom of the outer wall of the catalytic combustion furnace 3 is also equipped with a slag discharge pipe that communicates with the interior, which helps to concentrate the water generated by combustion at the bottom and discharge and collect it.

[0032] Furthermore, a condensing assembly is used to cool the high-temperature exhaust gas after catalytic combustion. The condensing assembly is installed at the end of the catalytic combustion assembly and includes a condensing box 4 and a curved tube 40 installed inside the condensing box 4. Secondly, the guide tube 30 extends to the condenser box 4, the left end of the curved tube 40 is inserted into the guide tube 30 and fixed by bolts, the right end of the curved tube 40 extends into the filter box 5, the top of the condenser box 4 is provided with an inlet pipe 41, and the bottom of the front end face of the condenser box 4 is provided with a drain pipe 42.

[0033] In this invention, the liquid inlet pipe 41, the liquid outlet pipe 42 and the condenser box 4 are integrally formed, and both the liquid inlet pipe 41 and the liquid outlet pipe 42 are provided with sealing plugs. When the sealing plug on the liquid inlet pipe 41 is opened, coolant is filled into the condenser box 4. The coolant wraps around the curved pipe 40, which helps to cool the inside of the curved pipe 40 through the exhaust gas. After continuous use for a period of time, the sealing plug on the liquid outlet pipe 42 is opened, which helps to replace the internal coolant.

[0034] Secondly, the filter adsorption component is used to adsorb and filter the cooled exhaust gas again. The filter adsorption component is installed at the end of the condenser component and includes a filter box 5.

[0035] Furthermore, the filter box 5 is equipped with several activated carbon filter cottons 52 inside, the top of the filter box 5 is equipped with a second sealing cover 50, the lower surface of the second sealing cover 50 is equipped with a second rubber pad 51, and the middle of the right end of the filter box 5 is equipped with a discharge pipe 53.

[0036] In this invention, the width of the outer wall of the second rubber pad 51 is adapted to the width of the inner wall of the filter box 5. The second rubber pad 51 is bonded and fixed to the second sealing cover 50, and the second sealing cover 50 is fixed to the filter box 5 by bolts, which increases the stability of the installation of the second sealing cover 50 and the filter box 5. With the cooperation of multiple activated carbon filter cottons 52, it helps to filter and adsorb the cooled exhaust gas and reduce the discharge of particulate matter.

[0037] In this embodiment, when the non-edible vegetable oil processing waste gas treatment equipment is in use, firstly, the drain pipe 11 with butterfly valve 110 and the spray cylinder 1 with air inlet pipe 12 are combined and fixed. The water pump 10 with spray ring pipe 100 is fixed on the outer wall of the spray cylinder 1. The tray 14 with absorbent cotton 141 is inserted and matched with the upper part of the limiting ring 13. The top cover 15 with air guide pipe 150 is inserted and fixed with bolts. The air guide pipe 150 is inserted and connected to one end of the drying box 2 with drying cotton 20. The drying box 2 is connected to the catalytic combustion furnace 3 through the guide pipe 22 with one-way valve 220. The guide pipe 30 is connected to the condensation box 4 and the catalytic combustion furnace 3. The filter box 5 with multiple activated carbon filter cotton 52 is connected to the curved pipe 40 on the condensation box 4. Alkali solution is added to the inside of spray cylinder 1 from the top, and then the top cover 15 is inserted into spray cylinder 1. External non-edible vegetable oil processing waste gas is introduced into spray cylinder 1 through inlet pipe 12. Water pump 10 is started, continuously drawing out the internal alkali solution for circulating spraying, neutralizing fatty acids and acidic gases in the waste gas. The solution is then filtered by absorbent cotton 141 to reduce waste caused by atomized alkali solution discharge. It then enters drying chamber 2, where it is absorbed by drying cotton 20 to reduce humidity. With the cooperation of one-way valve 220, the backflow of gas inside catalytic combustion furnace 3 is reduced. Finally, with the cooperation of igniter 31, ignition is achieved at the corresponding nozzle. The exhaust gas undergoes high-temperature combustion, decomposing the high-concentration exhaust gas into water and carbon dioxide. The combusted exhaust gas then enters the condenser 4 and passes through the curved tube 40, increasing the contact area with the coolant inside the condenser 4, thereby cooling the exhaust gas. Finally, it enters the filter box 5, where multiple activated carbon filter cottons 52 work together to adsorb and filter the exhaust gas. Finally, it is discharged from the discharge pipe 53, reducing the impact of direct emissions on the surrounding environment. Furthermore, the second sealing cover 50 and the first sealing cover 21 can be disassembled with bolts, which facilitates the removal and replacement of activated carbon filter cottons 52 and drying cotton 20, making it convenient for continuous exhaust gas treatment.

Claims

1. A waste gas treatment device for non-edible vegetable oil processing, characterized in that, include: Alkali spray assembly is used to neutralize fatty acids and acidic gases in waste gas. The alkali spray assembly includes a spray cylinder (1), and a top cover (15) is inserted into the top of the spray cylinder (1). The top cover (15) is provided with a gas guide pipe (150) for guiding the direction of waste gas. The drying component dries the neutralized exhaust gas. The drying component is installed at the end of the alkaline spray component. The drying component includes a drying box (2). The catalytic combustion assembly is used to treat the dried exhaust gas and remove organic matter. The catalytic combustion assembly is installed at the end of the drying assembly and includes a catalytic combustion furnace (3). The condensing component is used to cool the high-temperature exhaust gas after catalytic combustion. The condensing component is installed at the end of the catalytic combustion component. The condensing component includes a condensing box (4) and a curved tube (40) installed inside the condensing box (4). The filter adsorption component is used to adsorb and filter the cooled exhaust gas again. The filter adsorption component is installed at the end of the condenser component and includes a filter box (5).

2. The waste gas treatment equipment for non-edible vegetable oil processing according to claim 1, characterized in that: An air inlet pipe (12) is provided in the middle of the outer wall of the spray cylinder (1). A drain pipe (11) is provided near the bottom of the outer wall of the spray cylinder (1). A butterfly valve (110) is provided on the drain pipe (11). A water pump (10) is also provided on the outer wall of the spray cylinder (1). The water pump (10) extends into the interior of the spray cylinder (1). A spray ring pipe (100) is provided at the drain end of the water pump (10).

3. The waste gas treatment equipment for non-edible vegetable oil processing according to claim 1, characterized in that: The inner wall of the spray cylinder (1) is provided with a limiting ring (13) near the top. The limiting ring (13) is provided with a tray (14). The tray (14) has several perforations (140). The tray (14) is provided with absorbent cotton (141) above it. The top cover (15) is inserted into the top of the spray cylinder (1). The top of the top cover (15) is provided with an air guide pipe (150). The end of the air guide pipe (150) is connected to the inner wall of the drying box (2).

4. The waste gas treatment equipment for non-edible vegetable oil processing according to claim 1, characterized in that: The drying box (2) is equipped with drying cotton (20) inside. The top of the drying box (2) is equipped with a first sealing cover (21). The lower surface of the first sealing cover (21) is equipped with a first rubber pad (210). The right end of the drying box (2) is equipped with a guide pipe (22) near the top. Each guide pipe (22) is equipped with a one-way valve (220).

5. The waste gas treatment equipment for non-edible vegetable oil processing according to claim 4, characterized in that: The end of the guide pipe (22) extends into the interior of the catalytic combustion furnace (3). The catalytic combustion furnace (3) is equipped with several igniters (31). Each igniter (31) is equipped with a nozzle connected to an external oxygen pipe. The catalytic combustion furnace (3) is also equipped with a guide pipe (30) for internal exhaust on one side.

6. The waste gas treatment equipment for non-edible vegetable oil processing according to claim 5, characterized in that: The guide tube (30) extends to the condenser (4). The left end of the curved tube (40) is inserted into the guide tube (30) and fixed by bolts. The right end of the curved tube (40) extends into the filter box (5). The top of the condenser (4) is provided with an inlet pipe (41), and the bottom of the front end face of the condenser (4) is provided with a drain pipe (42).

7. The waste gas treatment equipment for non-edible vegetable oil processing according to claim 1, characterized in that: The filter box (5) is equipped with several activated carbon filter cotton (52) inside. The top of the filter box (5) is equipped with a second sealing cover (50). The lower surface of the second sealing cover (50) is equipped with a second rubber pad (51). The middle of the right end of the filter box (5) is equipped with a discharge pipe (53).

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