A fish oil soapstock by-product hydrolysis apparatus

Abstract

The utility model discloses a fish oil soap foot byproduct hydrolytic device relates to fish oil soap foot byproduct processing equipment technical field, including the reaction cylinder, the middle position of reaction cylinder inner chamber bottom is fixed with fixed cylinder, the inside of fixed cylinder is equipped with the circulation lifting subassembly, and the material in the inside of reaction cylinder is continuously circulated from below to above, the upper end of reaction cylinder is sealed with the clamping of upper cover, the upper end surface fixed mounting of upper cover has transmission box, transmission box includes the transmission mechanism of drive circulation lifting subassembly and inert gas delivery mechanism, and the material in the lifting process is impacted to the tiny bubble of inert gas delivery mechanism discharge, one side of reaction cylinder is provided with the separation tank, and the material in the inside of reaction cylinder is delivered to the separation tank and deposits and stands still through the external discharge pump of discharge pipe, solved the hydrolytic device because of the problem of the poor dispersion contact effect of oil phase and water phase due to the inability to quickly destroy the material surface tension.

Description

Technical Field

[0001] This utility model relates to the technical field of fish oil soap foot by-product treatment equipment, specifically a fish oil soap foot by-product hydrolysis device. Background Technology

[0002] The fish oil soap residue hydrolysis device is a specialized device for hydrolyzing soap residue byproducts generated during fish oil refining. Through specific process conditions (such as high temperature, high pressure, or the addition of catalysts), it converts fatty acid salts and other components in the soap residue into recyclable substances such as free fatty acids and glycerol, thereby achieving resource recovery and environmentally friendly treatment of byproducts. This improves the overall efficiency of fish oil production while reducing waste emissions.

[0003] For example, the Chinese authorized patent CN106281722A, entitled "A Method for Continuous Hydrolysis of Oil Foot and Soap Foot," involves adding oil foot and soap foot to a mixing tank, adding water, and adding acid dropwise until the pH of the mixture reaches 6. The mixture is then stirred until homogeneous, with the amount of water added to the mixing tank being 30%-40% of the mass of the oil foot and soap foot. The mixed liquid material is then sent to a preheater and preheated to 150℃-230℃. The preheated material enters a continuous reactor for reaction. After the reaction is complete, the material is separated to obtain crude fatty acids, solid residue, and wastewater. This invention features a simple and continuous process, achieving the acidification and hydrolysis of oil foot and soap foot in one step. The process is simple and can be continuously operated using a continuous reactor.

[0004] While the existing technologies can achieve the hydrolysis treatment of fish oil soap foot by-products, the surface tension of the materials cannot be quickly broken during the hydrolysis process, resulting in poor dispersion and contact between the oil phase and the water phase. Therefore, they do not meet the current requirements. In response, we propose a fish oil soap foot by-product hydrolysis device. Utility Model Content

[0005] The purpose of this invention is to provide a hydrolysis device for fish oil soap foot byproducts, in order to solve the problem that the hydrolysis devices mentioned in the background art cannot quickly destroy the surface tension of the material, resulting in poor dispersion and contact between the oil phase and the water phase.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fish oil soap foot by-product hydrolysis device, comprising a reaction cylinder, a fixed cylinder fixedly located at the middle of the bottom of the reaction cylinder, a circulating lifting component inside the fixed cylinder to continuously circulate the material inside the reaction cylinder from bottom to top, a top cover snapped and sealed at the upper end of the reaction cylinder, a transmission box fixedly installed on the upper end face of the top cover, the transmission box including a transmission mechanism for driving the circulating lifting component and an inert gas conveying mechanism, the microbubbles discharged by the inert gas conveying mechanism impacting the material during the lifting process, a separation box provided on one side of the reaction cylinder, and a discharge pipe connecting the bottom side of the reaction cylinder to the separation box, the discharge pipe conveying the material inside the reaction cylinder to the separation box for sedimentation and settling through an external discharge pump.

[0007] Preferably, the circulating lifting assembly includes a rotating tube located inside the fixed cylinder, and the outside of the rotating tube is provided with a plurality of vertically equidistant spiral lifting blades, and the outside of the spiral lifting blades is close to the inner wall of the fixed cylinder. The lower end of the fixed cylinder is provided with a material inlet, and the upper end of the fixed cylinder is provided with a material outlet.

[0008] Preferably, the transmission mechanism includes a driven gear, the outer wall of the hollow shaft at the lower end of the driven gear is connected to the upper cover by a bearing, and the hollow shaft at the lower end of the driven gear is connected and communicated with the top end of the rotating tube by a key. A first motor is fixedly installed on one side of the upper surface of the transmission box, and a driving gear is fixedly installed at one end of the output shaft of the first motor located inside the transmission box, and the driving gear is meshed with the driven gear.

[0009] Preferably, the inert gas delivery mechanism includes a rotary sealing joint disposed at the top of the hollow shaft of the driven gear, an air inlet pipe installed at the upper end of the rotary sealing joint, a valve installed on the outside of the air inlet pipe, a high-pressure air delivery pipe connected to the top of the air inlet pipe, and multiple high-pressure air holes provided on the outer wall of the inner end of the rotary pipe located inside the fixed cylinder.

[0010] Preferably, a stirring rod is fixedly installed on one side of the rotating tube located outside the fixed cylinder.

[0011] Preferably, the front end of the separation box is provided with a transparent window, and a separation tube is installed inside the transparent window. The separation tube is slidably limited to the top plate of the separation box. A rack is provided on the side wall of the separation tube. A second motor is fixedly installed on one side of the upper end face of the separation box. A transmission gear is installed on the output shaft of the second motor, and the transmission gear is meshed with the rack. A corrugated hose is installed at the top end of the separation tube, and a three-way valve is provided at the outlet end of the corrugated hose. The two ports of the three-way valve are respectively connected to the crude fatty acid storage tank and the aqueous phase storage tank. A residue discharge pipe is provided at the lower end of one side of the separation box.

[0012] Preferably, a heating device is provided in the inner wall of the reaction cylinder.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model adopts a multi-stage mixing mechanism. After the fish oil soap residue by-products and catalyst enter the reaction cylinder, the output shaft of the first motor drives the drive gear to rotate, which in turn drives the rotating tube to rotate under the meshing of the driven gear. A fixed cylinder is installed inside the reaction cylinder, and the rotating tube is equipped with multiple spiral lifting blades at one end inside the fixed cylinder. Since the bottom of the reaction cylinder cavity is a conical structure, the material continuously gathers towards the bottom center and enters from the material inlet at the bottom of the fixed cylinder. During the rotation of the rotating tube, the spiral lifting blades rotate, continuously lifting the material entering the fixed cylinder upward until it is discharged from the material outlet at the top. At the same time, stirring rods are installed on both sides of the upper end of the rotating tube outside the fixed cylinder, continuously mixing the material discharged from the material outlet. This linkage mode of internal circulation lifting combined with external stirring and shearing can effectively break the high viscosity agglomeration of soap residue, enhance the mass transfer contact between the material and the catalyst, avoid uneven local reaction, adapt to the characteristics of high solid content materials, and improve the hydrolysis reaction efficiency and product yield.

[0015] 2. This utility model features a hollow rotating tube with multiple through holes on the outer wall of one end of the fixed cylinder. During the rotation of the rotating tube, the valve of the air inlet pipe is opened, and the compressor delivers inert gas to the air inlet pipe through the high-pressure air delivery pipe. The gas then enters the rotating tube through the air inlet pipe and is finally discharged through the high-pressure air hole. This allows the material to be impacted by tiny bubbles during the lifting process, effectively reducing the mixing resistance caused by the high viscosity of the soapstock, further breaking up material agglomerates, and increasing the contact area between the gas, liquid, and solid phases. At the same time, the buoyancy generated by the rising bubbles and the pushing force of the spiral blades form a composite driving force, enhancing the turbulence of the material in the fixed cylinder and accelerating the mass transfer process between fatty acid salts and the catalyst. In addition, the introduction of inert gas can effectively isolate oxygen, preventing the unsaturated components in the soapstock from oxidizing and deteriorating, and improving the quality of the crude fatty acid product.

[0016] 3. This utility model incorporates a separation tank. After the reaction, the crude fatty acid, solid residue, aqueous phase, and dissolved glycerol enter the separation tank through a discharge pipe. Utilizing the density differences of the components, the mixture settles and separates into layers. Since the density of the crude fatty acid is less than that of the aqueous phase, it floats to the top. The aqueous phase containing glycerol and a small amount of soluble impurities is located in the middle layer. The unreacted colloidal and mechanical impurities, due to their higher density, settle to the bottom of the tank, forming a sludge layer. After settling, the material is extracted from different locations through the separation pipe. After the separation pipe removes the upper layer of crude fatty acid, the second motor is activated. The transmission gear on its output shaft, meshing with a rack, drives the separation pipe downwards. The operator can observe the position of the separation pipe through a transparent window and continuously extracts the middle layer of aqueous phase. Finally, the solid residue at the bottom is discharged through a residue discharge pipe at the lower end of one side of the separation tank. This not only achieves effective separation of materials but also provides convenient conditions for subsequent crude fatty acid refining, glycerol recovery, and solid residue treatment, improving the overall economic and environmental benefits of the fish oil soap foot by-product hydrolysis process. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present utility model;

[0018] Figure 2 This is a cross-sectional view of the internal structure of the reaction cylinder of this utility model;

[0019] Figure 3 For the present utility model Figure 2 Enlarged view of a portion of region A in the middle;

[0020] Figure 4 This is a top view of the present invention;

[0021] Figure 5 This is a three-dimensional view of the internal structure of the transmission box of this utility model.

[0022] In the diagram: 1. Reaction cylinder; 2. Top cover; 3. Transmission box; 4. First motor; 5. Rotary sealing joint; 6. Air inlet pipe; 7. Valve; 8. High-pressure air delivery pipe; 9. Discharge pipe; 10. Discharge pump; 11. Separation box; 12. Transparent window; 13. Separation pipe; 14. Rack; 15. Second motor; 16. Transmission gear; 17. Residue discharge pipe; 18. Driving gear; 19. Driven gear; 20. Rotating pipe; 21. Spiral lifting blade; 22. Fixed cylinder; 23. Stirring rod; 24. Material inlet; 25. Material outlet; 26. High-pressure air vent. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Please see Figure 1-5 An embodiment of this utility model provides a fish oil soap foot by-product hydrolysis device, including a reaction cylinder 1, a heating device in the inner wall of the reaction cylinder 1, a fixed cylinder 22 fixedly installed at the middle position of the bottom of the inner cavity of the reaction cylinder 1, a circulating lifting component inside the fixed cylinder 22 to continuously circulate the material inside the reaction cylinder 1 from bottom to top, a top cover 2 snapped and sealed at the upper end of the reaction cylinder 1, a transmission box 3 fixedly installed on the upper end face of the top cover 2, the transmission box 3 includes a transmission mechanism for driving the circulating lifting component and an inert gas conveying mechanism, the micro bubbles discharged by the inert gas conveying mechanism impact the material during the lifting process, a separation box 11 is provided on one side of the reaction cylinder 1, and the bottom side of the reaction cylinder 1 is connected to the separation box 11 through a discharge pipe 9, the discharge pipe 9 conveys the material inside the reaction cylinder 1 to the separation box 11 for sedimentation and settling through an external discharge pump 10;

[0025] The heating device heats the material in the reaction cylinder 1 to provide a suitable temperature for the hydrolysis reaction. After the discharge pump 10 is started, it pumps the material that has completed the reaction in the reaction cylinder 1 to the separation box 11 through the discharge pipe 9. In the transmission mechanism, the first motor 4 drives the drive gear 18 to rotate. The drive gear 18 meshes with the driven gear 19, thereby driving the driven gear 19 to rotate. Since the hollow shaft at the lower end of the driven gear 19 is keyed to the rotating tube 20, the rotating tube 20 rotates accordingly, driving the circulating lifting assembly to work. In the inert gas conveying mechanism, the valve 7 of the air inlet pipe 6 is opened, and the compressor conveys the inert gas to the rotating tube 20 through the high-pressure air conveying pipe 8 and the rotary sealing joint 5, and then discharges it through the high-pressure air hole 26 on the rotating tube 20.

[0026] Please see Figure 2 and Figure 5 The circulating lifting assembly includes a rotating tube 20 located inside the fixed cylinder 22. The rotating tube 20 has multiple vertically equidistant spiral lifting blades 21 on its outside, and the outside of the spiral lifting blades 21 is close to the inner wall of the fixed cylinder 22. The lower end of the fixed cylinder 22 has a material inlet 24, and the upper end of the fixed cylinder 22 has a material outlet 25. The transmission mechanism includes a driven gear 19. The outer wall of the hollow shaft at the lower end of the driven gear 19 is connected to the upper cover 2 through a bearing, and the hollow shaft at the lower end of the driven gear 19 is keyed and connected to the top end of the rotating tube 20. A first motor 4 is fixedly installed on one side of the upper surface of the transmission box 3. A drive gear 18 is fixedly installed at one end of the output shaft of the first motor 4 located inside the transmission box 3, and the drive gear 18 is meshed with the driven gear 19.

[0027] The first motor 4 starts, and its output shaft drives the drive gear 18 to rotate. The drive gear 18 meshes with the driven gear 19, causing the driven gear 19 to rotate. Because the hollow shaft at the lower end of the driven gear 19 is keyed to the rotating tube 20, the rotating tube 20 rotates accordingly, driving the spiral lifting blades 21 to rotate. Since the bottom of the inner cavity of the reaction cylinder 1 is a conical structure, the material gathers towards the center of the bottom and enters the fixed cylinder 22 through the material inlet 24. The rotation of the spiral lifting blades 21 lifts the material upward and discharges it from the material outlet 25. The cooperation between the spiral lifting blades 21 and the fixed cylinder 22 forcibly lifts the material, realizing the circulation of the material in the reaction cylinder 1, increasing the contact opportunity between the material and the catalyst and heat, and making the hydrolysis reaction more complete. The conical bottom and the material inlet / outlet design guide the orderly flow of the material and avoid material sedimentation.

[0028] Please see Figure 1 , Figure 2 , Figure 3 and Figure 5 The inert gas delivery mechanism includes a rotary sealing joint 5 located at the top of the hollow shaft of the driven gear 19. An air inlet pipe 6 is installed at the upper end of the rotary sealing joint 5. A valve 7 is installed on the outside of the air inlet pipe 6. A high-pressure air delivery pipe 8 is connected to the top of the air inlet pipe 6. Multiple high-pressure air holes 26 are provided on the outer wall of the end of the rotary pipe 20 located inside the fixed cylinder 22.

[0029] When valve 7 is opened, the compressor delivers inert gas through high-pressure air delivery pipe 8 to inlet pipe 6, and then through rotary sealing joint 5 into the hollow shaft of driven gear 19. Since the hollow shaft of driven gear 19 is connected to rotary tube 20, the inert gas enters rotary tube 20 and finally exits from high-pressure air hole 26 on the outer wall of one end of rotary tube 20 located inside fixed cylinder 22. During the process of material being lifted by spiral lifting blades 21, the material is impacted. The introduction of inert gas generates microbubbles that impact the material, further breaking up material agglomeration, reducing material viscosity, increasing the gas-liquid-solid three-phase contact area, and enhancing mass transfer; the inert gas can isolate oxygen, prevent the oxidation of unsaturated components in soap residue, and ensure product quality; the rotary sealing joint 5 ensures stable delivery of inert gas when rotary tube 20 rotates.

[0030] Please see Figure 2 A stirring rod 23 is fixedly installed on one side of the rotating tube 20 located outside the fixed cylinder 22. When the rotating tube 20 rotates, it drives the stirring rod 23 fixed outside it to rotate together, stirring and mixing the material discharged from the material outlet 25 of the fixed cylinder 22. The stirring rod 23 performs secondary stirring on the discharged material, which complements the material lifting effect of the spiral lifting blade 21, further improving the uniformity of material mixing, ensuring that the fish oil soap foot is in full contact with the catalyst, and promoting a more efficient hydrolysis reaction.

[0031] Please see Figure 1 and Figure 4The front end of the separation box 11 is provided with a transparent window 12, and a separation tube 13 is installed inside the transparent window 12. The separation tube 13 is slidably limited to the top plate of the separation box 11. A rack 14 is provided on the side wall of the separation tube 13. A second motor 15 is fixedly installed on one side of the upper end face of the separation box 11. A transmission gear 16 is installed on the output shaft of the second motor 15, and the transmission gear 16 is meshed with the rack 14. A corrugated hose is installed at the top end of the separation tube 13, and a three-way valve is provided at the outlet end of the corrugated hose. The two ports of the three-way valve are respectively connected to the crude fatty acid storage tank and the aqueous phase storage tank. A residue discharge pipe 17 is provided at the lower end of one side of the separation box 11.

[0032] After the material containing crude fatty acids, solid residue, aqueous phase, and dissolved glycerol enters the separator 11, it is allowed to separate into layers by utilizing the density differences of each component. The second motor 15 is turned on, and its output shaft drives the transmission gear 16 to rotate. The transmission gear 16 meshes with the rack 14, causing the separator 13 to move up and down. First, the upper layer of crude fatty acids is extracted through the separator 13 and transported to the crude fatty acid storage tank via a corrugated hose and a three-way valve. Then, the position of the separator 13 is adjusted to extract the middle layer of aqueous phase and transport it to the aqueous phase storage tank. Finally, the bottom solid residue is discharged through the residue discharge pipe 17.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A device for hydrolyzing fish oil soap residue byproducts, comprising a reaction cylinder (1), characterized in that: A fixed cylinder (22) is fixedly installed at the middle position of the bottom of the reaction cylinder (1). The fixed cylinder (22) is equipped with a circulating lifting component to continuously circulate the material inside the reaction cylinder (1) from bottom to top. The upper end of the reaction cylinder (1) is clamped and sealed with a top cover (2). A transmission box (3) is fixedly installed on the upper end face of the top cover (2). The transmission box (3) includes a transmission mechanism for driving the circulating lifting component and an inert gas conveying mechanism. The tiny bubbles discharged by the inert gas conveying mechanism impact the material during the lifting process. A separation box (11) is provided on one side of the reaction cylinder (1). The bottom side of the reaction cylinder (1) is connected to the separation box (11) through a discharge pipe (9). The discharge pipe (9) transports the material inside the reaction cylinder (1) to the separation box (11) for sedimentation and settling through an external discharge pump (10).

2. The apparatus for hydrolyzing fish oil soap foot byproducts according to claim 1, characterized in that: The circulating lifting assembly includes a rotating tube (20) located inside the fixed cylinder (22). The rotating tube (20) has multiple vertically equidistant spiral lifting blades (21) on its outside. The outside of the spiral lifting blades (21) is close to the inner wall of the fixed cylinder (22). The lower end of the fixed cylinder (22) is provided with a material inlet (24), and the upper end of the fixed cylinder (22) is provided with a material outlet (25).

3. The apparatus for hydrolyzing fish oil soap foot byproducts according to claim 2, characterized in that: The transmission mechanism includes a driven gear (19), the outer wall of the hollow shaft at the lower end of the driven gear (19) is connected to the upper cover (2) by a bearing, and the hollow shaft at the lower end of the driven gear (19) is connected and communicated with the top end of the rotating tube (20) by a key. A first motor (4) is fixedly installed on one side of the upper surface of the transmission box (3), and a driving gear (18) is fixedly installed at one end of the output shaft of the first motor (4) inside the transmission box (3), and the driving gear (18) meshes with the driven gear (19).

4. The apparatus for hydrolyzing fish oil soap foot byproducts according to claim 3, characterized in that: The inert gas delivery mechanism includes a rotary sealing joint (5) located at the top of the hollow shaft of the driven gear (19). An air inlet pipe (6) is installed at the upper end of the rotary sealing joint (5). A valve (7) is installed on the outside of the air inlet pipe (6). A high-pressure air delivery pipe (8) is connected to the top of the air inlet pipe (6). Multiple high-pressure air holes (26) are provided on the outer wall of one end of the rotary pipe (20) inside the fixed cylinder (22).

5. The apparatus for hydrolyzing fish oil soap foot byproducts according to claim 4, characterized in that: The rotating tube (20) is fixedly equipped with a stirring rod (23) on one side of the outer end of the fixed tube (22).

6. The apparatus for hydrolyzing fish oil soap foot byproducts according to claim 1, characterized in that: The front end of the separation box (11) is provided with a transparent window (12), and a separation tube (13) is installed inside the transparent window (12). The separation tube (13) is slidably limited to the top plate of the separation box (11). A rack (14) is provided on the side wall of the separation tube (13). A second motor (15) is fixedly installed on one side of the upper end face of the separation box (11). A transmission gear (16) is installed on the output shaft of the second motor (15), and the transmission gear (16) is meshed with the rack (14). A corrugated hose is installed at the top end of the separation tube (13), and a three-way valve is provided at the outlet end of the corrugated hose. The two ports of the three-way valve are respectively connected to the crude fatty acid storage tank and the aqueous phase storage tank. A residue discharge pipe (17) is provided at the lower end of one side of the separation box (11).

7. The apparatus for hydrolyzing fish oil soap foot byproducts according to claim 1, characterized in that: The inner wall of the reaction cylinder (1) is equipped with a heating device.

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