Apparatus for extracting oil from biodiesel sludge floe

Abstract

The utility model discloses a biodiesel oil sludge flocculate oil extraction device: oil soluble material storage tank top is connected oil soluble material unloading feed pipe, tail gas pipe and oil soluble material recovery pipe, and recovery pipe is connected in the upper portion of flash tower after connecting discharge valve and cooler, and tank bottom export pipeline is divided into two ways, one way connects oil soluble material spare discharge pipe, and the other way is connected into flocculate and oil soluble material mixing tank top after connecting pump feed valve, discharge pump and pump discharge valve in proper order, and flocculate feed pipe and tail gas pipe are also equipped in mixing tank top, and tank bottom export pipe is divided into two ways, one way connects compressed air inlet valve, and the other way connects oil sludge discharge valve, and the pipeline in tank lower portion is connected in the top of flash tower after connecting pump feed valve, discharge pump and pump discharge valve in proper order, and the oil slurry discharge pipe of flash tower bottom is connected raw oil storage tank after connecting discharge valve, cooler, pump feed valve, discharge pump and pump discharge valve. The utility model discloses equipment investment is little, and the oil recovery rate of oil sludge flocculate is high, and production cost is low.

Description

Technical Field

[0001] This utility model relates to the technical field of biodiesel production equipment, and in particular to an oil extraction device for biodiesel sludge flocs. Background Technology

[0002] Biodiesel sludge flocs contain grease, flocs, water, and solid residue. Since grease and flocs have similar densities, conventional heating and natural sedimentation separation methods can only separate most of the water and solid residue. Centrifuging the separated upper layer of grease and flocs using a horizontal screw centrifuge is not very effective, and only a small amount of grease can be recovered. If the centrifuged flocs are treated as waste, it not only increases the processing cost but also wastes resources. Summary of the Invention

[0003] The purpose of this invention is to provide a biodiesel sludge flocculant extraction device that requires less equipment investment, has a high oil recovery rate from flocculants, and low production costs, thereby solving the problems of low oil recovery rate, high processing costs, and resource waste in existing technologies.

[0004] To achieve the above objectives, the present invention provides an oil extraction device for biodiesel sludge flocculants, comprising an oil-soluble substance storage tank 1, a flocculant and oil-soluble substance mixing tank 2, a flash tower 3, an oil-soluble substance discharge pump 7, an oil and oil mixture discharge pump 8, an oil discharge pump 9, an oil cooler 10, and an oil-soluble substance cooler 11. The top of the oil-soluble substance storage tank 1 is connected to an oil-soluble substance inlet pipe with an unloading inlet valve 12, an exhaust pipe, and an oil-soluble substance recovery pipe 6. The oil-soluble substance recovery pipe 6 connects to the upper middle part of the flash tower 3 after connecting to the flash tower's oil-soluble substance recovery outlet valve 23 and the oil-soluble substance cooler 11. The bottom outlet pipe of the oil-soluble substance storage tank 1 is divided into two paths: one path connects to a backup oil-soluble substance outlet pipe with a backup valve 13, and the other path serves as an oil-soluble substance outlet pipe 4, which is sequentially connected to the oil-soluble substance... The feed valve 14 of the discharge pump, the discharge pump 7 of the oil-soluble substance, and the discharge valve 15 of the oil-soluble substance discharge pump are connected to the top of the flocculant and oil-soluble substance mixing tank 2. The top of the flocculant and oil-soluble substance mixing tank 2 is also equipped with a flocculant feed pipe 5 and a tail gas pipe. The bottom outlet pipe of the tank is divided into two paths, one of which is connected to the compressed air inlet valve 16, and the other of which is connected to the sludge discharge valve 17. A pipe is provided on one side of the lower part of the tank, which is connected in sequence to the feed valve 18 of the oil and oil-soluble substance mixture discharge pump, the discharge pump 8 of the oil and oil-soluble substance mixture, and the discharge valve 19 of the oil and oil-soluble substance mixture discharge pump, and then connected to the top of the flash tower 3. The bottom oil discharge pipe of the flash tower 3 is connected in sequence to the oil discharge valve 20, the oil cooler 10, the oil discharge pump feed valve 21, the oil discharge pump 9, and the oil discharge pump discharge valve 22, and then connected to the raw oil storage tank.

[0005] This utility model of an oil extraction device for biodiesel sludge flocs has the following technical features and

[0006] Beneficial effects:

[0007] 1. This device is used for the extraction of oil from biodiesel sludge flocs. It not only saves on equipment investment and maintenance costs, but also improves the oil recovery rate, reduces oil loss, and greatly reduces production costs.

[0008] 2. Recycling and reusing oil-soluble substances reduces the consumption of these substances, minimizes the impact on production, and reduces processing costs.

[0009] 3. The entire device has a simple and compact structure, low manufacturing and maintenance costs, and is easy and efficient to operate. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the oil extraction device in biodiesel sludge flocs according to this utility model.

[0011] Figure reference numerals: 1. Oil-soluble substance storage tank; 2. Flocculant and oil-soluble substance mixing tank; 3. Flash evaporator; 4. Oil-soluble substance discharge pipe; 5. Flocculant feed pipe; 6. Oil-soluble substance recovery pipe; 7. Oil-soluble substance discharge pump; 8. Oil and grease mixture discharge pump; 9. Oil cooler; 10. Oil-soluble substance cooler; 11. Unloading feed valve; 12. Standby valve; 13. Oil-soluble substance discharge pump feed valve; 14. Oil-soluble substance discharge pump discharge valve; 15. Compressed air inlet valve; 16. Sludge discharge valve; 17. Oil and grease mixture discharge pump feed valve; 18. Oil and grease mixture discharge pump discharge valve; 19. Oil discharge valve; 20. Oil discharge pump feed valve; 21. Oil discharge pump discharge valve; 22. Oil-soluble substance discharge valve; 23. Detailed Implementation

[0012] The following description, in conjunction with the accompanying drawings and specific embodiments, provides a more detailed explanation of the oil extraction device for biodiesel sludge flocs of this invention.

[0013] Figure 1As shown, the oil extraction device for biodiesel sludge flocs of this utility model includes an oil-soluble substance storage tank 1, a flocculant and oil-soluble substance mixing tank 2, a flash tower 3, an oil-soluble substance discharge pump 7, an oil and oil mixture discharge pump 8, an oil discharge pump 9, an oil cooler 10, and an oil-soluble substance cooler 11. The top of the oil-soluble substance storage tank 1 is connected to an oil-soluble substance inlet pipe with an unloading inlet valve 12, an exhaust pipe, and an oil-soluble substance recovery pipe 6. The oil-soluble substance recovery pipe 6 is connected to the upper middle part of the flash tower 3 after connecting to the flash tower's oil-soluble substance recovery outlet valve 23 and the oil-soluble substance cooler 11. The bottom outlet pipe of the oil-soluble substance storage tank 1 is divided into two paths: one path is connected to an oil-soluble substance standby outlet pipe with a standby valve 13, and the other path serves as an oil-soluble substance outlet pipe 4, which is connected to the oil-soluble substance outlet in sequence. The pump feed valve 14, the oil-soluble substance discharge pump 7, and the oil-soluble substance discharge pump discharge valve 15 are connected to the top of the flocculant and oil-soluble substance mixing tank 2. The top of the flocculant and oil-soluble substance mixing tank 2 is also equipped with a flocculant feed pipe 5 and a tail gas pipe. The bottom outlet pipe of the tank is divided into two paths, one of which is connected to the compressed air inlet valve 16, and the other of which is connected to the sludge discharge valve 17. A pipe is provided on one side of the lower part of the tank, which is connected in sequence to the oil and oil-soluble substance mixture discharge pump feed valve 18, the oil and oil-soluble substance mixture discharge pump 8, and the oil and oil-soluble substance mixture discharge pump discharge valve 19, and then connected to the top of the flash tower 3. The bottom oil discharge pipe of the flash tower 3 is connected in sequence to the oil discharge valve 20, the oil cooler 10, the oil discharge pump feed valve 21, the oil discharge pump 9, and the oil discharge pump discharge valve 22, and then connected to the raw oil storage tank.

[0014] The operating steps of this biodiesel sludge flocculant extraction device are as follows:

[0015] Flocculants are fed into the flocculant and oil-soluble substance mixing tank 2 through the flocculant feed pipe 5. At this time, the oil-soluble substance discharge pump discharge valve 15, compressed air inlet valve 16, sludge discharge valve 17, and oil and oil-soluble substance mixture discharge pump feed valve 18 are closed. Heating and settling are carried out. After settling, the separated solid impurities and most of the water are discharged to the sludge storage tank through the sludge discharge valve 17. The oil-soluble substance discharge pump feed valve 14 and oil-soluble substance discharge pump discharge valve 15 are opened, and the oil-soluble substance discharge pump 7 is used to pump the oil-soluble substance into the flocculant and oil-soluble substance mixing tank 2 in a certain proportion. After pumping, the oil-soluble substance discharge pump feed valve 14 and oil-soluble substance discharge pump discharge valve 15 are closed, and the compressed air inlet valve 16 is opened for pneumatic stirring. After stirring evenly, the compressed air inlet valve 16 is closed. Heating and extraction are carried out. After collection, open the sludge discharge valve 17 to discharge the settled solid impurities, water, and flocculants into the sludge storage tank until the grease is clean. After discharge, close the sludge discharge valve 17 and open the grease and oil-soluble mixture discharge pump inlet valve 18 and grease and oil-soluble mixture discharge pump outlet valve 19. The clean grease and oil-soluble substances are pumped into the flash tower 3 for flash evaporation through the oil-soluble mixture discharge pump 8. During flash evaporation, open the flash tower recovery oil-soluble substance discharge valve 23 and grease discharge valve 20. After flash evaporation, the oil-soluble substances are cooled by the oil-soluble substance cooler 11 through the oil-soluble substance recovery pipe 6 and then flow back to the oil-soluble substance storage tank 1. The grease enters the grease cooler 10 through the grease discharge valve 20 for cooling. After cooling, open the grease discharge pump inlet valve 21 and grease discharge pump outlet valve 22, and start the grease discharge pump 9 to pump the grease into the raw oil storage tank.

[0016] Compared with existing natural sedimentation devices or centrifuge devices, the oil extraction device for biodiesel sludge flocs with the above-described structure can significantly improve the oil recovery rate, reduce oil loss, recover and reuse oil-soluble substances, reduce the consumption of oil-soluble substances, minimize the impact on production, and reduce processing costs. The entire device has a simple and compact structure, low manufacturing and maintenance costs, and is convenient and efficient to operate.

Claims

1. An oil extraction device for biodiesel sludge flocculants, characterized in that: It includes an oil-soluble substance storage tank (1), a flocculant and oil-soluble substance mixing tank (2), a flash tower (3), an oil-soluble substance discharge pump (7), an oil and oil mixture discharge pump (8), an oil discharge pump (9), an oil cooler (10), and an oil-soluble substance cooler (11). The top of the oil-soluble substance storage tank (1) is connected to an oil-soluble substance inlet pipe with an unloading inlet valve (12), an exhaust pipe, and an oil-soluble substance recovery pipe (6). The oil-soluble substance recovery pipe (6) is connected to the upper middle part of the flash tower (3) after connecting to the flash tower oil-soluble substance recovery outlet valve (23) and the oil-soluble substance cooler (11). The bottom outlet pipe of the oil-soluble substance storage tank (1) is divided into two paths. One path is connected to the oil-soluble substance standby outlet pipe with a standby valve (13), and the other path is used as the oil-soluble substance outlet pipe (4), which is connected in sequence to the oil-soluble substance outlet pump inlet valve (14), the oil-soluble substance... The material discharge pump (7) and the oil-soluble material discharge pump discharge valve (15) are connected to the top of the flocculant and oil-soluble material mixing tank (2); the top of the flocculant and oil-soluble material mixing tank (2) is also provided with a flocculant feed pipe (5) and a tail gas pipe. The bottom outlet pipe of the tank is divided into two paths, one path is connected to the compressed air inlet valve (16), and the other path is connected to the sludge discharge valve (17); a pipe is provided on one side of the lower part of the tank, which is connected to the feed valve (18) of the oil and oil-soluble material mixture discharge pump, the oil and oil-soluble material mixture discharge pump (8), and the oil and oil-soluble material mixture discharge pump discharge valve (19) in sequence, and then connected to the top of the flash tower (3); the bottom oil discharge pipe of the flash tower (3) is connected to the raw material oil storage tank in sequence with the oil discharge valve (20), the oil cooler (10), the oil discharge pump feed valve (21), the oil discharge pump (9), and the oil discharge pump discharge valve (22).

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