Bone source calcium hydrogen phosphate recovery system in gelatin production process
The recycling system, which combines multi-stage sedimentation and water film dust collectors, solves the problem of calcium phosphate loss in gelatin production, improves production yield and environmental benefits, and ensures a stable water supply and equipment operation.
Patent Information
- Application Number
- CN202520334279.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-02-28
AI Technical Summary
In the gelatin production process, dicalcium phosphate is easily lost during the supernatant discharge, dehydration and drying processes, resulting in reduced production yield and waste of resources.
The recycling system combines multi-stage sedimentation and water film dust collectors. Through equipment such as neutralization tanks, sedimentation tanks, centrifugal pumps and submersible pumps, it achieves multi-stage sedimentation and recycling of dicalcium phosphate, provides a stable water source to the water film dust collector to prevent dicalcium phosphate backflow and blockage, and uses compressed air to disperse the accumulated dicalcium phosphate.
It improved the production yield of dicalcium phosphate, saved water costs, reduced the pressure on the environmental protection workshop, and ensured the stable operation of the water film dust collector.
Smart Images
Figure CN223930766U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of gelatin production technology, and specifically relates to a bone-derived dicalcium phosphate recovery system in the gelatin production process. Background Technology
[0002] Bone-derived dicalcium phosphate is a byproduct of bone gelatin production. During the treatment of bone granules with hydrochloric acid, after the granules are soaked in hydrochloric acid, the concentration drops to below 0.7%, resulting in a solution known as "low-concentration acid." Because this low-concentration acid contains a large amount of minerals, it is neutralized by stirring with lime milk. After precipitation and dehydration, dicalcium phosphate dihydrate is obtained, which is the main component of bone-derived dicalcium phosphate. Bone-derived dicalcium phosphate is primarily used as a supplement of calcium, phosphorus, and other minerals in feed, and it is easily digested and absorbed by livestock and poultry.
[0003] Currently, in the production of bone-derived dicalcium phosphate, dicalcium phosphate is lost during the three processes of supernatant discharge, dehydration, and drying. This reduces the production yield of bone-derived dicalcium phosphate and wastes resources. Therefore, there is an urgent need for a system to recover dicalcium phosphate during the production of bone-derived dicalcium phosphate, thereby improving the production yield. Summary of the Invention
[0004] A bone-derived dicalcium phosphate recovery system for gelatin production includes a neutralization tank, a neutralization drain pipe, a submersible pump, a first self-priming tank, a second self-priming tank, a first centrifugal pump, a first sedimentation tank, a second centrifugal pump, a second sedimentation tank, a buffer tank, a third centrifugal pump, a fourth centrifugal pump, a water film dust collector, dicalcium phosphate recovery pipelines, a sewage pipe, and sedimentation tanks. The sedimentation tanks include a first sedimentation tank, a second sedimentation tank, a third sedimentation tank, a fourth sedimentation tank, a fifth sedimentation tank, and an open channel. Overflow outlets are provided between the first and second sedimentation tanks, between the second and third sedimentation tanks, and between the third and fourth sedimentation tanks. The neutralization tank has a supernatant drain outlet in the middle, which connects to the first sedimentation tank via the neutralization drain pipe. The sedimentation tanks are interconnected; the first sedimentation tank is connected to the second sedimentation tank via an overflow outlet, the second sedimentation tank is connected to the third sedimentation tank via an overflow outlet, and the third sedimentation tank is connected to the fourth sedimentation tank via an overflow outlet; the first and second self-priming tanks are located in the fourth sedimentation tank, and the fourth sedimentation tank is lifted by the first self-priming tank and connected to the first sedimentation tank via the first centrifugal pump; the first sedimentation tank is connected to the second sedimentation tank via an overflow pipe; the second sedimentation tank is connected to the buffer tank via an overflow pipe; the bottom opening of the buffer tank is connected to the fourth centrifugal pump via a pipe, and the fourth centrifugal pump is connected to the water film dust collector; the bottom opening of the water film dust collector is connected to the fifth sedimentation tank via a pipe; the outlet of the fifth sedimentation tank is connected to the first sedimentation tank via an open channel.
[0005] Each of the first, second, third, fourth, and fifth sedimentation tanks is equipped with a submersible pump. The submersible pumps are connected to the dicalcium phosphate recovery pipeline via pipelines. A check valve is installed on the pipeline near the main pipeline, and a check valve is installed at the rear end of each pipeline interface.
[0006] The first self-priming tank, the second self-priming tank, and the buffer tank are connected to a water purification pipeline.
[0007] Compressed air pipelines are connected to the top of the first and second sedimentation tanks, extending directly to the bottom of the tanks.
[0008] The outlet at the bottom of the first sedimentation tank is connected to the dicalcium phosphate recovery pipeline via a second centrifugal pump, and a one-way valve is installed at the rear end of the pipeline interface.
[0009] The outlet at the bottom of the second sedimentation tank is connected to the dicalcium phosphate recovery pipeline via a third centrifugal pump.
[0010] The fourth sedimentation tank is lifted by the second self-priming tank and connected to the water film dust collector via the fourth centrifugal pump.
[0011] The opening at the top of the buffer tank wall is connected to a sewage pipe, which overflows into the environmental protection workshop.
[0012] The dicalcium phosphate recovery pipeline is connected to the neutralization tank.
[0013] The first centrifugal pump is controlled by a float level gauge.
[0014] The working process and working principle of this utility model:
[0015] The neutralization tank, connected to the neutralization drain pipe via the drain outlet in the middle of the tank, discharges the supernatant carrying a small amount of dicalcium phosphate to the first sedimentation tank. The first sedimentation tank, through the overflow outlet, gradually settles and finally flows to the fourth sedimentation tank. The material in the fourth sedimentation tank is lifted by the first self-priming tank and pumped by the first centrifugal pump to the first sedimentation tank for sedimentation. The material in the first sedimentation tank flows through the overflow outlet to the second sedimentation tank for sedimentation. The material in the second sedimentation tank flows through the overflow outlet to the buffer tank. At this point, the buffer tank contains clear water without dicalcium phosphate. The clear water without dicalcium phosphate is pumped out by the fourth centrifugal pump from the outlet at the bottom of the buffer tank to supply water to the water film dust collector. The water film dust collector recovers the lighter dicalcium phosphate that was not collected during the drying process and flows out through the outlet at the bottom of the water film dust collector, entering the fifth sedimentation tank for sedimentation. The material in the fifth sedimentation tank flows out through the overflow outlet and into the first sedimentation tank through the open channel, and the cycle repeats.
[0016] The dicalcium phosphate in the sedimentation tank is pumped out by a submersible pump and recovered to the neutralization tank through the dicalcium phosphate recovery pipeline. After dehydration and drying, bone-derived dicalcium phosphate is produced as a finished product.
[0017] The dicalcium phosphate in the first and second sedimentation tanks is pumped out by the second and third centrifugal pumps, respectively, and then recovered to the neutralization tank through the dicalcium phosphate recovery pipeline. After dehydration and drying, bone-derived dicalcium phosphate is prepared as a finished product. When too much dicalcium phosphate accumulates in the first and second sedimentation tanks, making it difficult to recover, compressed air is released through the compressed air pipeline to disperse the dicalcium phosphate, making it easier to recover.
[0018] One-way valves are installed near the main pipeline and at the rear end of the interface of the dicalcium phosphate recovery pipeline to prevent dicalcium phosphate backflow from clogging the dicalcium phosphate recovery pipeline.
[0019] The purified water pipeline connects the first self-priming tank and the second self-priming tank to replenish the internal pressure of the first and second self-priming tanks at any time and prevent pressure leakage; it also connects to the buffer tank to prevent the water film dust collector from shutting off due to insufficient drainage.
[0020] The first centrifugal pump is controlled by a float level gauge to ensure that there is an overflow height difference in the sedimentation tank.
[0021] When recovering dicalcium phosphate in the sedimentation tank, the second self-priming tank lifts the clean water in the fourth sedimentation tank, which is then supplied to the water film dust collector via the fourth centrifugal pump.
[0022] When the production and recycling of dicalcium phosphate involves a large volume of wastewater, the clean water, free of dicalcium phosphate after sedimentation, is discharged into the environmental protection workshop via a drain pipe connected to the opening at the top of the buffer tank wall.
[0023] The beneficial effects of this utility model are:
[0024] 1. This utility model utilizes a multi-stage sedimentation method to recover dicalcium phosphate while providing a sufficient and stable water source for the water film dust collector, thereby improving product yield and saving water costs.
[0025] 2. It can perform graded recycling of sedimentation tanks and sedimentation vessels, avoiding water shortage in water film dust collectors due to the recycling of dicalcium phosphate.
[0026] 3. In terms of environmental protection, all wastewater discharged into the environmental protection workshop is clean water without solids, which reduces the pressure on the environmental protection workshop. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the structure of this utility model;
[0028] Figure 2 This is a three-dimensional schematic diagram of the sedimentation tank of this utility model.
[0029] In the diagram: 1-Neutralization tank; 2-Neutralization drain pipe; 3-Submersible pump; 4-First self-priming tank; 5-Second self-priming tank; 6-First centrifugal pump; 7-First sedimentation tank; 8-Second centrifugal pump; 9-Second sedimentation tank; 10-Buffer tank; 11-Third centrifugal pump; 12-Fourth centrifugal pump; 13-Water film dust collector; 14-Compressed air pipeline; 15-Clean water pipeline; 16-Dicalcium phosphate recovery pipeline; 17-Sewage pipe; 18-Sedimentation tank; 19-First sedimentation tank; 20-Second sedimentation tank; 21-Third sedimentation tank; 22-Fourth sedimentation tank; 23-Fifth sedimentation tank; 24-Open channel. Detailed Implementation
[0030] Please see Figure 1 and Figure 2 As shown in the figure, an embodiment of this utility model is a bone-derived dicalcium phosphate recovery system in gelatin production. The system includes a neutralization tank 1, a neutralization drain pipe 2, a submersible pump 3, a first self-priming tank 4, a second self-priming tank 5, a first centrifugal pump 6, a first sedimentation tank 7, a second centrifugal pump 8, a second sedimentation tank 9, a buffer tank 10, a third centrifugal pump 11, a fourth centrifugal pump 12, a water film dust collector 13, a dicalcium phosphate recovery pipeline 16, a sewage pipe 17, and a sedimentation tank 18. The sedimentation tank 18 includes a first sedimentation tank 19, a second sedimentation tank 20, a third sedimentation tank 21, a fourth sedimentation tank 22, a fifth sedimentation tank 23, and an open channel 24. Overflow outlets are provided between the first sedimentation tank 19 and the second sedimentation tank 20, between the second sedimentation tank 20 and the third sedimentation tank 21, and between the third sedimentation tank 21 and the fourth sedimentation tank 22. The neutralization tank 1 has a supernatant drain outlet in the middle. The drain pipe 2 is connected to the first sedimentation tank 19; the first sedimentation tank 19 is connected to the second sedimentation tank 20 through an overflow port, the second sedimentation tank 20 is connected to the third sedimentation tank 21 through an overflow port, and the third sedimentation tank 21 is connected to the fourth sedimentation tank 22 through an overflow port; the first self-priming tank 4 and the second self-priming tank 5 are located in the fourth sedimentation tank 22, and the fourth sedimentation tank 22 is lifted by the first self-priming tank 4 and connected to the first sedimentation tank 7 via the first centrifugal pump 6; the first sedimentation tank 7 is connected to the second sedimentation tank 9 through an overflow pipe; the second sedimentation tank 9 is connected to the buffer tank 10 through an overflow pipe; the lower opening of the buffer tank 10 is connected to the fourth centrifugal pump 12 through a pipe, and is connected to the water film dust collector 13 through the fourth centrifugal pump 12; the lower opening of the water film dust collector 13 is connected to the fifth sedimentation tank 23 through a pipe; the outlet of the fifth sedimentation tank 23 is connected to the first sedimentation tank 19 through an open channel 24.
[0031] A submersible pump 3 is installed in each of the first sedimentation tank 19, the second sedimentation tank 20, the third sedimentation tank 21, the fourth sedimentation tank 22, and the fifth sedimentation tank 23. The submersible pump 3 is connected to the dicalcium phosphate recovery pipeline 16 via a pipeline. A check valve is installed on the pipeline near the main pipeline, and a check valve is installed at the rear end of each pipeline interface.
[0032] The first self-priming tank 4, the second self-priming tank 5, and the buffer tank 10 are connected to a water purification pipe 15.
[0033] Compressed air pipeline 14 is connected above the first sedimentation tank 7 and the second sedimentation tank 9, leading directly to the bottom of the tank.
[0034] The outlet below the first sedimentation tank 7 is connected to the dicalcium phosphate recovery pipeline 16 via the second centrifugal pump 8, and a one-way valve is installed at the rear end of the pipeline interface.
[0035] The outlet below the second sedimentation tank 9 is connected to the dicalcium phosphate recovery pipeline 16 via the third centrifugal pump 11.
[0036] The fourth sedimentation tank 22 is lifted by the second self-priming tank 5 and connected to the water film dust collector 13 via the fourth centrifugal pump 12.
[0037] The opening at the top of the buffer tank 10 is connected to the sewage pipe 17, which overflows into the environmental protection workshop.
[0038] The dicalcium phosphate recovery pipeline 16 is connected to the neutralization tank 1.
[0039] The first centrifugal pump 6 is controlled by a float level gauge.
[0040] The working process and working principle of this embodiment:
[0041] Neutralization tank 1, connected to neutralization drain pipe 2 via drain outlet in the middle of the tank, discharges the supernatant carrying a small amount of dicalcium phosphate to the first sedimentation tank 19. The first sedimentation tank 19 flows through overflow outlet to settle in stages and finally to the fourth sedimentation tank 22. The material in the fourth sedimentation tank 22 is lifted by the first self-priming tank 4 and pumped by the first centrifugal pump 6 to the first sedimentation tank 7 for sedimentation. The first sedimentation tank 7 flows through overflow outlet to the second sedimentation tank 9 for sedimentation. The second sedimentation tank 9 flows through overflow outlet to the buffer tank 10. At this time, the buffer tank 10 contains clear water without dicalcium phosphate. The clear water without dicalcium phosphate is pumped out by the fourth centrifugal pump 12 from the outlet at the bottom of the buffer tank 10 to supply water to the water film dust collector 13. The water film dust collector 13 recovers the remaining light dicalcium phosphate during the drying process and flows out through the outlet at the bottom of the water film dust collector 13 to the fifth sedimentation tank 23 for sedimentation. The material in the fifth sedimentation tank 23 flows out through overflow outlet and into the first sedimentation tank 19 through open channel 24, and the cycle repeats.
[0042] The dicalcium phosphate in the sedimentation tank 18 is pumped out by the submersible pump 3 and recovered to the neutralization tank 1 via the dicalcium phosphate recovery pipeline 16. After dehydration and drying, bone-derived dicalcium phosphate is prepared as a finished product.
[0043] The dicalcium phosphate in the first sedimentation tank 7 and the second sedimentation tank 9 is pumped out by the second centrifugal pump 8 and the third centrifugal pump 11, respectively, and recovered to the neutralization tank 1 through the dicalcium phosphate recovery pipeline 16. After dehydration and drying, bone-derived dicalcium phosphate is prepared as a finished product. When too much dicalcium phosphate accumulates in the first sedimentation tank 7 and the second sedimentation tank 9, it becomes difficult to recover. At this time, compressed air is used in the compressed air pipeline 14 to disperse the dicalcium phosphate, making it easier to recover.
[0044] A check valve is installed at the rear end of the dicalcium phosphate recovery line 16 near the main line and interface to prevent dicalcium phosphate backflow from clogging the dicalcium phosphate recovery line 16.
[0045] The water purification pipeline 15 is connected to the first self-priming tank 4 and the second self-priming tank 5, in order to replenish the internal pressure of the first self-priming tank 4 and the second self-priming tank 5 at any time and prevent pressure leakage; it is connected to the buffer tank 10 to prevent the water film dust collector 13 from shutting off due to insufficient drainage.
[0046] The first centrifugal pump 6 is controlled by a float level gauge to ensure that there is an overflow height difference in the sedimentation tank 18.
[0047] When recovering dicalcium phosphate in the sedimentation tank, the second self-priming tank 5 lifts the clean water in the fourth sedimentation tank 22, and supplies water to the water film dust collector 13 via the fourth centrifugal pump 12.
[0048] When the production and recycling of dicalcium phosphate involves a large volume of wastewater, the wastewater that has been settled and does not contain dicalcium phosphate will be discharged into the environmental protection workshop via the sewage pipe 17 connected to the opening on the top of the buffer tank 10.
Claims
1. A bone-derived dicalcium phosphate recovery system for gelatin production, characterized in that, The system includes a neutralization tank (1), a neutralization drain pipe (2), a submersible pump (3), a first self-priming tank (4), a second self-priming tank (5), a first centrifugal pump (6), a first sedimentation tank (7), a second centrifugal pump (8), a second sedimentation tank (9), a buffer tank (10), a third centrifugal pump (11), a fourth centrifugal pump (12), a water film dust collector (13), a dicalcium phosphate recovery pipeline (16), a sewage pipe (17), and a sedimentation tank (18). The sedimentation tank (18) includes a first sedimentation tank (19), a second sedimentation tank (20), a third sedimentation tank (21), a fourth sedimentation tank (22), a fifth sedimentation tank (23), and an open channel (24). The first sedimentation tank (19) and the second sedimentation tank (20), and the second sedimentation tank... Overflow outlets are provided between the sedimentation tank (20) and the third sedimentation tank (21), and between the third sedimentation tank (21) and the fourth sedimentation tank (22). The neutralization tank (1) has a supernatant drain outlet in the middle, which is connected to the first sedimentation tank (19) through the neutralization drain pipe (2). The first sedimentation tank (19) is connected to the second sedimentation tank (20) through an overflow outlet, the second sedimentation tank (20) is connected to the third sedimentation tank (21) through an overflow outlet, and the third sedimentation tank (21) is connected to the fourth sedimentation tank (22) through an overflow outlet. The first self-priming tank (4) and the second self-priming tank (5) are located in the fourth sedimentation tank (22). The fourth sedimentation tank (22) is lifted by the first self-priming tank (4) and connected to the first sedimentation tank (7) through the first centrifugal pump (6). The sedimentation tank (7) is connected to the second sedimentation tank (9) through an overflow pipe; the second sedimentation tank (9) is connected to the buffer tank (10) through an overflow pipe; the bottom opening of the buffer tank (10) is connected to the fourth centrifugal pump (12) through a pipe, and is connected to the water film dust collector (13) through the fourth centrifugal pump (12); the bottom opening of the water film dust collector (13) is connected to the fifth sedimentation tank (23) through a pipe; the outlet of the fifth sedimentation tank (23) is connected to the first sedimentation tank (19) through an open channel (24); a submersible pump (3) is installed in each of the first sedimentation tank (19), the second sedimentation tank (20), the third sedimentation tank (21), the fourth sedimentation tank (22), and the fifth sedimentation tank (23), and the submersible pump (3) is connected to the dicalcium phosphate recovery pipeline (1) through a pipe. 6) Connection: Install check valves on the pipelines near the main pipeline and at the rear end of each pipeline interface; connect the first self-priming tank (4), the second self-priming tank (5), and the buffer tank (10) to the clean water pipeline (15); connect the first sedimentation tank (7) and the second sedimentation tank (9) to the compressed air pipeline (14), which leads directly to the bottom of the tank; connect the outlet of the first sedimentation tank (7) to the dicalcium phosphate recovery pipeline (16) via the second centrifugal pump (8), and install check valves at the rear end of the pipeline interface; connect the outlet of the second sedimentation tank (9) to the dicalcium phosphate recovery pipeline (16) via the third centrifugal pump (11); the fourth sedimentation tank (22) is lifted by the second self-priming tank (5) and connected to the water film dust collector (13) via the fourth centrifugal pump (12);The top opening of the buffer tank (10) is connected to the drain pipe (17), which overflows into the environmental protection workshop via a pipeline; the dicalcium phosphate recovery pipeline (16) is connected to the neutralization tank (1).
2. The bone-derived dicalcium phosphate recovery system in the gelatin production process according to claim 1, characterized in that: The first centrifugal pump (6) is controlled by a float level gauge.