A process for high-temperature rendering - acidolysis - co-producing calcium sulfate whiskers from diseased animals

Abstract

The present invention relates to the technical field of high-temperature rendering of diseased animals, and discloses a process for high-temperature rendering - acidolysis - co-producing calcium sulfate whiskers of diseased animals, comprising the following steps: S1: The materials are crushed into small pieces of 3 - 5 cm. After the temperature in the rendering tank reaches 160 °C and the pressure reaches 0.5 MPa, the pressure and temperature are maintained for 4 hours. Then the pressure in the rendering tank is increased to 1 - 2.5 MPa, and the materials are pressed into a hydrocyclone separator by the pressure in the rendering tank for three-phase separation of oil, water and slag to obtain purified grease and a water-slag mixture; S2: The water-slag is transferred to an acidolysis reactor, and 7% - 20% concentrated sulfuric acid based on the amount of the water-slag is added to obtain an acidolysis solution; S3: Eggshell powder is added to the acidolysis solution, and the reaction is carried out at a hydrothermal temperature of 120 - 140 °C for 1 - 5 h. This process can efficiently convert animal raw materials into amino acids, while making up for the defect of high acid content in the products of the acidolysis method and the defect of low utilization of the by-product calcium sulfate.

Description

Technical Field

[0001] The present invention relates to the technical field of high-temperature rendering of diseased animals, and in particular to a process for high-temperature rendering - acidolysis - co-production of calcium sulfate whiskers of diseased animals. Background Art

[0002] Whether it is the carcass of an animal that died normally or due to disease, it often carries a variety of germs. If not processed or processed improperly, the carcass will quickly decompose and rot, emitting a stench, contaminating the air, water source and soil with pathogenic microorganisms, causing the spread and proliferation of diseases. At the same time, people who come into direct or indirect contact with it are all at risk of infection. This requires timely harmless treatment of animal carcasses to prevent the growth of bacteria and the spread of diseases. The main methods for the treatment and disposal of animal carcasses include rendering to extract oil, direct landfill, landfill after high-temperature steaming and disinfection, composting, direct incineration, incineration in an incinerator, etc.

[0003] Currently, for existing rendering machines, after the rendering treatment of animal carcasses, the animal carcasses need to be discharged from the rendering machine through the discharge port, transferred to the filtering equipment, and then the solid-liquid separation of the animal carcasses is carried out, and the process is relatively cumbersome.

[0004] For example, a wet oxidation device for treating animal carcasses with the publication number CN212348695U. The wet oxidation device for treating animal carcasses includes a frame and a treatment tank. Both sides of the bottom of the treatment tank are communicated with discharge pipes. The top of the storage tank is rotatably connected with a tank cover, and the top of the tank cover is communicated with a connecting pipe. A discharge valve is arranged on the surface of the discharge pipe located inside the frame. By the combined use of the storage tank, the filtering tank and the treatment tank, after the animal carcasses are treated in the treatment tank, they are directly discharged into the storage tank for solid-liquid separation. The process is simple, shortening the treatment time of animal carcasses and improving the work efficiency.

[0005] Traditionally, most diseased animals are treated in a pollution-free manner by rendering to extract oil from animal carcasses. However, dead animals still have relatively high economic value. If it is only for treating animal carcasses, the added value of the products is reduced. During the treatment process, the acid content in the acidolysis products is high, and the by-product calcium sulfate generated during the treatment process is poorly utilized.

[0006] Therefore, we propose a process for high-temperature rendering - acidolysis - co-production of calcium sulfate whiskers of diseased animals. Summary of the Invention

[0007] The object of the present invention is to provide a process for high-temperature rendering-acidolysis-coproduction of calcium sulfate whiskers for diseased animals, which is beneficial to increasing the amino acid content in acidolysis in addition to sulfuric acid in neutralization acidolysis. This process can efficiently convert animal raw materials into amino acids, make up for the defect of high acid content in the products of the acidolysis method, and at the same time solve the problem of low utilization of the by-product calcium sulfate generated in the treatment process, so as to realize the effective utilization of resources and solve the above-mentioned problems of high acid content in the products of the acidolysis method and low utilization of the by-product calcium sulfate generated in the treatment process.

[0008] To achieve the above object, the present invention provides the following technical solution: A process for high-temperature rendering-acidolysis-coproduction of calcium sulfate whiskers for diseased animals, comprising the following steps:

[0009] S1: Crush the material into small pieces of 3-5 cm, when the temperature in the rendering tank reaches 160 °C and the pressure reaches 0.5 MPa absolute pressure, maintain the pressure and temperature for 4 hours, then increase the pressure in the rendering tank to 1-2.5 MPa, and use the pressure in the rendering tank to press the material into a hydrocyclone for three-phase separation of oil, water and slag to obtain purified grease and a water-slag mixture;

[0010] S2: Transfer the water-slag to an acidolysis reactor, add 7%-20% concentrated sulfuric acid based on the amount of water-slag, and react at a temperature of 108-115 °C and a pressure of 0.05-0.1 MPa for 4-6 h to obtain an acidolysis solution;

[0011] S3: Add eggshell powder to the acidolysis solution until the pH is 8.5-10.5, and react at a hydrothermal temperature of 120-140 °C for 1-5 h. After the material is centrifuged, the liquid is the amino acid stock solution and the solid is calcium sulfate whiskers;

[0012] In S1, the rendering tank for high-temperature rendering of diseased animals includes a housing mechanism, a heat preservation mechanism installed inside the housing mechanism, and a driving mechanism installed inside the housing mechanism. The housing mechanism includes a first side plate and a second side plate. An outer cylinder is jointly installed between the first side plate and the second side plate, and clamping members are fixedly installed on the inner walls of the first side plate and the second side plate;

[0013] The heat preservation mechanism includes an inner cylinder rotatably installed between the two clamping members. The upper end of the inner cylinder is provided with a feed pipe inserted and connected with the outer cylinder, and the lower end of the inner cylinder is provided with a discharge pipe inserted and connected with the outer cylinder.

[0014] Preferably, the driving mechanism includes a motor and a rotating shaft installed at the output end of the motor. Two connecting bearings are fixedly installed on the rotating shaft. The two connecting bearings are respectively rotatably connected to the first side plate and the second side plate. One end of the connecting bearing is fixedly installed with a first overlapping rod. One end of the connecting bearing on the side away from the discharge pipe is rotatably installed with a rotating disk, and one end of the rotating disk is fixedly installed with a hydraulic rod.

[0015] Preferably, the housing mechanism further includes support legs fixedly installed at the lower end of the outer cylinder. One side of the second side plate is fixedly installed with a fixing plate, and the motor is fixedly installed at the upper end of the fixing plate. The upper end of the outer cylinder is connected and installed with a water inlet pipe, and the lower end of the outer cylinder is connected and installed with a water outlet pipe.

[0016] Preferably, the heat preservation mechanism includes a pressure gauge installation port connected and installed at the upper end of the inner cylinder, and a plurality of steam holes are installed on the inner wall of the inner cylinder at equal intervals.

[0017] Preferably, a connecting mechanism is arranged on the outer periphery of the driving mechanism. The connecting mechanism includes a first sleeve rotatably installed on the outer periphery of the rotating shaft. Clamping grooves are formed on both sides of the first sleeve, and a sliding groove is formed on the outer periphery of the first sleeve.

[0018] Preferably, a truncation part is formed in the middle of the first sleeve. A telescopic rod is installed inside the truncation part, and the telescopic rod is used to connect the two inner walls of the first sleeve. An elastic member is installed on the first sleeve.

[0019] Preferably, a rotating mechanism is arranged on the outer periphery of the connecting mechanism. The rotating mechanism includes two second sleeves rotatably installed on the outer periphery of the first sleeve. Clamping ring bodies are fixedly installed on the inner walls of the two second sleeves, and the clamping ring bodies are rotatably installed in the clamping grooves. Connecting rods are fixedly installed on both of the second sleeves. The first connecting rod is arranged on one side of the connecting rod.

[0020] Preferably, a spiral blade is commonly installed between the two connecting rods. The spiral blade is slidably installed in the sliding groove. A plurality of spiral blades are jointly combined into a spiral structure. One end of one of the connecting rods is fixedly installed with a second overlapping rod, and the second overlapping rod overlaps on one side of the adjacent connecting rod.

[0021] Preferably, one end of the clamping ring body is fixedly installed with a scroll spring. The scroll spring is arranged in the clamping groove and is also fixedly connected to the wall of the clamping groove.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. Secondary boosting liquefies all components in the raw materials except insoluble inorganic salts, which is beneficial for oil separation. The pressure in the rendering tank is used to press the materials into the hydrocyclone separator, improving the centrifugal separation efficiency of the hydrocyclone separator. The inner membrane of eggshell powder contains protein. Besides sulfuric acid in neutralization and acidolysis, it is also beneficial to increase the amino acid content in acidolysis. This process can efficiently convert animal raw materials into amino acids, making up for the defect of high acid content in the products of the acid hydrolysis method and the low utilization rate of the by-product calcium sulfate, realizing the effective utilization of resources, not only increasing the added value of the products, but also providing an economically feasible solution for the treatment of diseased animals.

[0024] 2. When the motor is started, the rotating shaft and connecting bearings rotate. The outer periphery of the spiral blade is thinner and has a sharp structure. After rotation, it can further break up the animal fragments, facilitating heating and separation. The sharp end of the spiral blade is close to the inner wall of the inner cylinder, further improving the cutting efficiency.

[0025] 3. After the motor is started, multiple spiral blades can rotate simultaneously. Multiple spiral blades together form a spiral structure. During the crushing process, not only can it drive the animal fragments to be heated evenly, but the spiral blades of the spiral structure can also drive the animal fragments to the position of the discharge pipe. After the animal fragments are heated, they can be directly discharged from the discharge pipe.

[0026] 4. When the spiral blade cuts into a bone structure or other hard structures, the spiral blade has a certain buffer force under the action of the scroll spring, reducing the damage caused by instantaneous impact to the spiral blade, and increasing the service life of the device to a certain extent.

[0027] 5. When the motor stops rotating, multiple spiral blades droop naturally and are all arranged at the lower end inside the device. After the animal fragments are rendered, the hydraulic rod is activated to extend, the spiral blade deforms and shortens, and the distance between adjacent spiral blades also shortens, facilitating the pushing of the animal fragments adhering to the inner wall of the device into the discharge pipe, greatly improving the discharge efficiency.

[0028] 6. The hydraulic rod can also be extended during the rotation of the motor, so the distance between adjacent spiral blades shortens. When the hydraulic rod shortens, adjacent first sleeves and spiral blades reset. Therefore, the gap of the spiral blade can be adjusted, facilitating the adjustment of the size of the animal fragments after cutting, with good use effect and high rendering efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is the overall system block diagram of the present invention;

[0030] Figure 2 is the structural schematic diagram of the rendering tank of the present invention;

[0031] Figure 3 is the top view of the rendering tank of the present invention;

[0032] Figure 4 For the present invention Figure 3 Cross-sectional view A-A in

[0033] Figure 5 For the present invention Figure 3 Cross-sectional view B-B in

[0034] Figure 6 Schematic structural diagram of the housing mechanism, heat preservation mechanism and driving mechanism of the present invention

[0035] Figure 7 Schematic structural diagram of the heat preservation mechanism of the present invention

[0036] Figure 8 Schematic structural diagram of the connection mechanism and rotation mechanism of the present invention

[0037] Figure 9 Schematic structural diagram of the connection mechanism of the present invention

[0038] Figure 10 Schematic structural diagram of the rotation mechanism of the present invention

[0039] In the figure: 1. Housing mechanism; 11. First side plate; 12. Second side plate; 13. Outer cylinder; 14. Support leg; 15. Fixed plate; 16. Water inlet pipe; 17. Water outlet pipe; 18. Clamping part; 2. Heat preservation mechanism; 21. Inner cylinder; 22. Feed pipe; 23. Pressure gauge installation port; 24. Discharge pipe; 25. Steam hole; 3. Driving mechanism; 31. Motor; 32. Rotating shaft; 33. Connecting bearing; 34. First overlapping rod; 35. Rotating disk; 36. Hydraulic rod; 4. Connection mechanism; 41. First sleeve; 42. Clamping groove; 43. Sliding groove; 44. Truncated part; 45. Telescopic rod; 46. Elastic part; 5. Rotation mechanism; 51. Second sleeve; 52. Clamping ring body; 53. Connecting rod; 54. Spiral blade; 55. Second overlapping rod; 56. Volute spring. Specific embodiments

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0041] Embodiment 1: Please refer to Figure 1 , a process for high-temperature rendering - acidolysis - co-producing calcium sulfate whiskers of diseased animals, comprising the following steps:

[0042] S1: Crush the materials into small pieces of 3 - 5 cm. After the temperature in the rendering tank reaches 160 °C and the pressure reaches 0.5 MPa absolute pressure, maintain the pressure and temperature for 4 hours. Then increase the pressure in the rendering tank to 1 - 2.5 MPa, and use the pressure in the rendering tank to press the materials into the hydrocyclone for three-phase separation of oil, water, and slag to obtain purified grease and a water-slag mixture;

[0043] S2: Transfer the water-slag to the acid hydrolysis reactor, add concentrated sulfuric acid accounting for 7% - 20% of the amount of water-slag, and react at a temperature of 108 - 115 °C and a pressure of 0.05 - 0.1 MPa for 4 - 6 h to obtain an acid hydrolysis solution;

[0044] S3: Slowly add eggshell powder to the acid hydrolysis solution until the pH reaches 8.5 - 10.5, and react at a hydrothermal temperature of 120 - 140 °C for 1 - 5 h. After the materials are centrifuged, the liquid is the amino acid stock solution and the solid is calcium sulfate whiskers.

[0045] In the above process, the secondary pressure increase liquefies all components in the raw materials except insoluble inorganic salts, which is beneficial to oil separation. Using the pressure in the rendering tank to press the materials into the hydrocyclone improves the centrifugal separation efficiency of the hydrocyclone.

[0046] The purpose of acid hydrolysis is to further decompose proteins and peptides in the materials into amino acids.

[0047] The inner membrane of the eggshell powder contains protein, which is beneficial to increasing the amino acid content in acid hydrolysis in addition to neutralizing sulfuric acid in acid hydrolysis.

[0048] This process can efficiently convert animal raw materials into amino acids, making up for the defects of high acid content in the products of the acid hydrolysis method and the low utilization rate of the by-product calcium sulfate.

[0049] Example 2: Please refer to Figures 1-7 , in S1, the rendering tank for high-temperature rendering of diseased animals includes a housing mechanism 1, a heat preservation mechanism 2 installed inside the housing mechanism 1, and a driving mechanism 3 installed inside the housing mechanism 1.

[0050] The housing mechanism 1 includes a first side plate 11 and a second side plate 12. An outer cylinder 13 is jointly installed between the first side plate 11 and the second side plate 12. Clamping parts 18 are fixedly installed on the inner walls of the first side plate 11 and the second side plate 12. The first side plate 11, the second side plate 12, and the outer cylinder 13 jointly form a closed space, and diseased animals are put into this space for rendering, which is used to perform high-temperature and high-pressure treatment on the crushed diseased animals to achieve the purpose of being pollution-free. In a high-temperature and high-pressure environment, the water and oil in the carcasses of dead animals are quickly evaporated and separated, and pathogens are effectively killed, while eliminating the stench.

[0051] The heat preservation mechanism 2 includes an inner cylinder body 21 rotatably installed between two clamping members 18. The inner cylinder body 21 is installed between the first side plate 11 and the second side plate 12 through the clamping members 18. The inner cylinder body 21 is arranged inside the outer cylinder body 13, so that the device forms a sealed heat preservation chamber for heat preservation and heat insulation treatment of the device.

[0052] A feed pipe 22 inserted and connected to the outer cylinder body 13 is provided at the upper end of the inner cylinder body 21. A closable door body (not shown in the figure) is installed on the feed pipe 22. The crushed diseased animals are put into the device through the feed pipe 22. After the door body is closed, the device can carry out heat preservation and high-pressure work inside. A discharge pipe 24 inserted and connected to the outer cylinder body 13 is provided at the lower end of the inner cylinder body 21. A closable door body is also installed on the discharge pipe 24. After the diseased animal rendering treatment is completed, it can be pressed out through the discharge pipe 24, which is convenient for entering a hydrocyclone for three-phase separation of oil, water and slag, so as to obtain purified grease and a water-slag mixture.

[0053] The driving mechanism 3 includes a motor 31 and a rotating shaft 32 installed at the output end of the motor 31. The motor 31 is fixed outside the device. After being started, it can drive the rotating shaft 32 to rotate, which is used to stir the animal fragments inside the device to achieve the effect of uniform pressure and heat, and two connecting bearings 33 are fixedly installed on the rotating shaft 32. The two connecting bearings 33 are respectively rotatably connected to the first side plate 11 and the second side plate 12, ensuring the stability and flexibility of the rotation of the rotating shaft 32.

[0054] Example three: Please refer to Figures 4-7 , the housing mechanism 1 further includes support legs 14 fixedly installed at the lower end of the outer cylinder body 13, which are used to support the device. A fixing plate 15 is fixedly installed on one side of the second side plate 12, and the motor 31 is fixedly installed on the upper end of the fixing plate 15 for fixing the motor 31.

[0055] There is a common heat preservation chamber between the outer cylinder body 13 and the inner cylinder body 21. A water inlet pipe 16 is connected and installed at the upper end of the outer cylinder body 13, and a water outlet pipe 17 is connected and installed at the lower end of the outer cylinder body 13. Closable valves (not shown in the figure) are installed on both the water inlet pipe 16 and the water outlet pipe 17. The water for generating steam is discharged into the heat preservation chamber through the water inlet pipe 16. After the rendering is completed, the hot water is discharged through the water outlet pipe 17.

[0056] The heat preservation mechanism 2 includes a pressure gauge installation port 23 connected and installed at the upper end of the inner cylinder body 21. The pressure gauge is installed on the device through the pressure gauge installation port 23 for real-time monitoring of the pressure inside the device. A plurality of steam holes 25 are equidistantly distributed on the inner wall of the inner cylinder body 21. The steam generated by the hot water is discharged into the device through the steam holes 25 to ensure a continuous high-temperature and high-pressure environment inside the device.

[0057] In this pressing tank, the specific process of steam heating is as follows:

[0058] Water is converted into steam by an existing steam generator, and then the steam is transmitted into the device through the steam holes 25, so that the animal fragments in the tank are heated. The steam diffuses in the tank and uses its convection and conduction characteristics to transfer heat energy to the medium in the tank, thereby achieving the purpose of heating.

[0059] Example 4: Please refer to Figures 4-10 , a connecting mechanism 4 is arranged on the outer periphery of the driving mechanism 3. The connecting mechanism 4 includes a first sleeve 41 rotatably installed on the outer periphery of the rotating shaft 32. Clamping grooves 42 are formed on both sides of the first sleeve 41, and a sliding groove 43 is formed on the outer periphery of the first sleeve 41.

[0060] A rotating mechanism 5 is arranged on the outer periphery of the connecting mechanism 4. The rotating mechanism 5 includes two second sleeves 51 rotatably installed on the outer periphery of the first sleeve 41. Clamping ring bodies 52 are fixedly installed on the inner walls of the two second sleeves 51. The clamping ring bodies 52 are rotatably installed in the clamping grooves 42, and connecting rods 53 are fixedly installed on both of the second sleeves 51.

[0061] One end of the connecting bearing 33 is fixedly installed with a first lapping rod 34. The first lapping rod 34 is arranged on one side of the connecting rod 53. Under the action of the first lapping rod 34, the connecting rod 53 rotates synchronously with the connecting bearing 33. After rotation, the animal fragments can be stirred and mixed, increasing the contact area between the fragments and high temperature, and facilitating the improvement of the heat reception uniformity.

[0062] A spiral blade 54 is jointly installed between the two connecting rods 53. One end of the spiral blade 54 is slidably installed in the sliding groove 43. In the initial state, multiple spiral blades 54 hang naturally and are all arranged at the lower end inside the device. When the motor 31 is started, the rotating shaft 32 and the connecting bearing 33 rotate. When the first lapping rod 34 on the connecting bearing 33 rotates to one side of the connecting rod 53, the first lapping rod 34 drives the connecting rod 53, the spiral blade 54, the connecting rod 53, and the second sleeve 51 to rotate. The spiral blade 54 rotates along the sliding groove 43 until the spiral blade 54 rotates to the end of the sliding groove 43, and the corresponding first sleeve 41 rotates synchronously. The outer periphery of the spiral blade 54 is thinner and has a sharp structure. After rotation, it can play a role in crushing the animal fragments again, facilitating heat reception and separation. The sharp end of the spiral blade 54 is close to the inner wall of the inner cylinder 21, further improving the cutting efficiency.

[0063] One end of one of the connecting rods 53 is fixedly installed with a second overlapping rod 55. The second overlapping rod 55 overlaps on one side of the adjacent connecting rod 53. The first spiral blade 54 is swung up and rotated under the action of the first overlapping rod 34. The adjacent spiral blades 54 and connecting rods 53 are swung up and rotated under the action of the second overlapping rod 55. Therefore, multiple spiral blades 54 can rotate simultaneously. The multiple spiral blades 54 are jointly combined into a spiral structure. During the crushing process, not only can the animal fragments be driven to be heated evenly, but the spiral blades 54 of the spiral structure can also drive the animal fragments to the position of the discharge pipe 24. After the animal fragments are heated, they can be directly discharged from the discharge pipe 24.

[0064] Embodiment Five: Please refer to Figures 4-10 One end of the clamping ring body 52 is fixedly installed with a scroll spring 56. The scroll spring 56 is arranged in the clamping groove 42 and is also fixedly connected to the wall of the clamping groove 42.

[0065] During the process of the spiral blade 54 rotating along the sliding groove 43, the clamping ring body 52 fixedly connected to the spiral blade 54 through the second sleeve 51 rotates in the clamping groove 42, and the corresponding scroll spring 56 expands and contracts adaptively. When the spiral blade 54 cuts into a bone structure or other relatively hard structure, the spiral blade 54 has a certain buffer force under the action of the scroll spring 56, reducing the damage caused to the spiral blade 54 by the instantaneous impact, and increasing the service life of the device to a certain extent.

[0066] A truncation part 44 is provided in the middle of the first sleeve 41. An expansion rod 45 is installed inside the truncation part 44. The expansion rod 45 is used to connect the two inner walls of the first sleeve 41. An elastic member 46 is installed on the first sleeve 41.

[0067] One end of the connecting bearing 33 on the side away from the discharge pipe 24 is rotatably installed with a rotating disk 35. One end of the rotating disk 35 is fixedly installed with a hydraulic rod 36.

[0068] After the motor 31 stops rotating, the multiple second sleeves 51, clamping ring bodies 52, connecting rods 53, and spiral blades 54 stop rotating. The multiple spiral blades 54 droop naturally and are all arranged at the lower end inside the device. After the animal fragments are processed by rendering, the hydraulic rod 36 is opened to extend. One end of the hydraulic rod 36 squeezes the first sleeve 41. The length of the truncation part 44 between the first sleeves 41 is shortened. Correspondingly, the expansion rod 45 and the elastic member 46 are shortened. The spiral blades 54 are deformed and shortened, and the distance between adjacent spiral blades 54 is also shortened, facilitating the pushing of the animal fragments adhered to the inner wall of the device into the discharge pipe 24, greatly improving the discharge efficiency.

[0069] During the rotation of the electric motor 31, the hydraulic rod 36 can also be extended, so that the distance between adjacent spiral vanes 54 is shortened. When the hydraulic rod 36 is shortened, the adjacent first sleeves 41 and spiral vanes 54 are reset. Therefore, the gap between the spiral vanes 54 can be adjusted, which is convenient for adjusting the size of the cut animal debris, with good use effect and high rendering efficiency.

[0070] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0071] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A process for high-temperature rendering - acidolysis - co-producing calcium sulfate whiskers from diseased animals, comprising the following steps: S1: Crush the materials into small pieces of 3 - 5 cm. After the temperature in the rendering tank reaches 160 °C and the pressure reaches 0.5 MPa, maintain the pressure and temperature for 4 hours. Then increase the pressure in the rendering tank to 1 - 2.5 MPa, and use the pressure in the rendering tank to press the materials into a hydrocyclone separator for three-phase separation of oil, water, and slag to obtain purified grease and a water-slag mixture; S2: Transfer the water-slag to an acidolysis reactor, add 7% - 20% concentrated sulfuric acid based on the amount of water-slag, and react at a temperature of 108 - 115 °C and a pressure of 0.05 - 0.1 MPa for 4 - 6 h to obtain an acidolysis solution; S3: Add eggshell powder to the acidolysis solution until the pH is 8.5 - 10.5, and react at a hydrothermal temperature of 120 - 140 °C for 1 - 5 h. After the materials are centrifuged, the liquid is the amino acid stock solution and the solid is calcium sulfate whiskers; In S1, the rendering tank for high-temperature rendering of diseased animals includes a housing mechanism (1), a heat preservation mechanism (2) installed inside the housing mechanism (1), and a driving mechanism (3) installed inside the housing mechanism (1). The housing mechanism (1) includes a first side plate (11) and a second side plate (12). An outer cylinder (13) is jointly installed between the first side plate (11) and the second side plate (12). Clamping members (18) are fixedly installed on the inner walls of the first side plate (11) and the second side plate (12); The heat preservation mechanism (2) includes an inner cylinder (21) rotatably installed between the two clamping members (18). The upper end of the inner cylinder (21) is provided with a feed pipe (22) that is inserted and connected to the outer cylinder (13), and the lower end of the inner cylinder (21) is provided with a discharge pipe (24) that is inserted and connected to the outer cylinder (13); The driving mechanism (3) includes a motor (31) and a rotating shaft (32) installed at the output end of the motor (31). Two connecting bearings (33) are fixedly installed on the rotating shaft (32). The two connecting bearings (33) are respectively rotatably connected to the first side plate (11) and the second side plate (12). One end of the connecting bearing (33) is fixedly installed with a first overlapping rod (34). One end of the connecting bearing (33) on the side away from the discharge pipe (24) is rotatably installed with a rotating disk (35). One end of the rotating disk (35) is fixedly installed with a hydraulic rod (36); A connecting mechanism (4) is arranged on the outer periphery of the driving mechanism (3). The connecting mechanism (4) includes a first sleeve (41) rotatably installed on the outer periphery of the rotating shaft (32). Clamping grooves (42) are provided on both sides of the first sleeve (41), and a sliding groove (43) is provided on the outer periphery of the first sleeve (41); A truncation part (44) is provided in the middle of the first sleeve (41). A telescopic rod (45) is installed inside the truncation part (44) for connecting the two inner walls of the first sleeve (41). An elastic member (46) is installed on the first sleeve (41); A rotating mechanism (5) is provided on the outer periphery of the connecting mechanism (4). The rotating mechanism (5) includes two second sleeves (51) rotatably mounted on the outer periphery of the first sleeve (41). A clamping ring body (52) is fixedly mounted on the inner walls of the two second sleeves (51). The clamping ring body (52) is rotatably mounted in the clamping groove (42). Connecting rods (53) are fixedly mounted on both of the two second sleeves (51). The first overlapping rod (34) is disposed on one side of the connecting rod (53). A spiral blade (54) is commonly mounted between the two connecting rods (53). The spiral blade (54) is slidably mounted in the sliding groove (43). A plurality of the spiral blades (54) are commonly combined into a spiral structure. One end of one of the connecting rods (53) is fixedly mounted with a second overlapping rod (55). The second overlapping rod (55) overlaps on one side of the adjacent connecting rod (53). One end of the clamping ring body (52) is fixedly mounted with a scroll spring (56). The scroll spring (56) is disposed in the clamping groove (42) and is also fixedly connected to the wall of the clamping groove (42).

2. The process for high-temperature rendering - acidolysis - co-producing calcium sulfate whiskers of diseased animals according to claim 1, characterized in that: The housing mechanism (1) further includes support legs (14) fixedly mounted at the lower end of the outer cylinder (13). A fixing plate (15) is fixedly mounted on one side of the second side plate (12). The motor (31) is fixedly mounted on the upper end of the fixing plate (15). A water inlet pipe (16) is connected and installed at the upper end of the outer cylinder (13). A water outlet pipe (17) is connected and installed at the lower end of the outer cylinder (13).

3. A process for high-temperature rendering - acidolysis - co-producing calcium sulfate whiskers from diseased animals according to claim 2, characterized in that: The heat preservation mechanism (2) includes a pressure gauge mounting port (23) connected and installed at the upper end of the inner cylinder (21). A plurality of steam holes (25) are equidistantly distributed and mounted on the inner wall of the inner cylinder (21).

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