A freezing system for soy protein adhesive preparation

Abstract

The utility model discloses a freezing system for soy protein adhesive preparation, including reation kettle, the sandwich water inlet pipeline and the sandwich backwater pipeline of reation kettle outside, the freezing machine subassembly is connected with the sandwich outside reation kettle, the freezing machine subassembly includes the cooling water inlet pipeline who is connected with the sandwich water inlet pipeline, the cooling backwater pipeline who is connected with the sandwich backwater pipeline and water -cooling screw rod type chiller, sets up cooling water inlet pipeline and cooling backwater pipeline in water -cooling screw rod type chiller side wall, cooling water inlet pipeline with sandwich water inlet pipeline intercommunication, cooling backwater pipeline with sandwich backwater pipeline intercommunication. The utility model discloses freezing system solves the problem that the adhesive is easy to ferment, and the storage period is less than 3 days caused by normal temperature water cooling, makes the reaction temperature greatly reduce through water -cooling screw rod type chiller, makes soy protein adhesive after low temperature storage, and the storage period can reach 15 days.

Description

Technical Field

[0001] This utility model relates to the field of sheet material processing technology, and in particular to a freezing system for preparing soybean protein adhesive. Background Technology

[0002] The manufacturing process of particleboard requires a large amount of adhesive, currently formaldehyde-based adhesives are commonly used. However, formaldehyde-based adhesives release large amounts of free formaldehyde, posing a significant threat to human health and the environment. To address this issue, researchers have modified and grafted soybean protein adhesives, enabling their application in industrial production.

[0003] In the preparation and industrial production of soybean protein adhesives, the adhesives need to be cooled. Currently, cooling towers are used with room temperature water for cooling. However, this method has several drawbacks, including poor cooling effect, easy loss of activity of soybean protein adhesives, increased viscosity of adhesives, short storage period, long cooling time, insufficient cooling temperature, poor cooling effect, easy fermentation of adhesives, and storage period of less than 3 days.

[0004] Based on this, a freezing system for the preparation of soybean protein adhesives is proposed to solve this problem. Utility Model Content

[0005] The purpose of this invention is to provide a freezing system for the preparation of soybean protein adhesives, so as to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A freezing system for preparing soybean protein adhesive includes a reaction vessel, an external jacketed water inlet pipe and a jacketed water return pipe. A freezing unit is connected to the external jacket of the reaction vessel. The freezing unit includes a cooling water inlet pipe connected to the jacketed water inlet pipe, a cooling water return pipe connected to the jacketed water return pipe, and a water-cooled screw chiller. The cooling water inlet pipe and the cooling water return pipe are arranged on the side wall of the water-cooled screw chiller. The cooling water inlet pipe is connected to the jacketed water inlet pipe, and the cooling water return pipe is connected to the jacketed water return pipe.

[0008] Preferably, the water-cooled screw chiller unit is connected to a stainless steel water tank via a pipeline. The stainless steel water tank is provided with an outlet, an outlet, and an inlet. A centrifugal pump is installed on the pipeline connecting the water-cooled screw chiller unit to the outlet of the stainless steel water tank.

[0009] Preferably, the water-cooled screw chiller unit includes two tanks, an upper tank and an lower tank, which are interconnected. A cooling water inlet and a cooling water outlet are provided on the surface of the upper tank, and the centrifugal pump is connected to the cooling water inlet.

[0010] Preferably, the cooling water outlet is connected to the water inlet of the stainless steel water tank via a pipe.

[0011] Preferably, the outlet 2 of the stainless steel water tank is connected to the interlayer water inlet pipe, a butterfly valve 1 is installed on the interlayer water inlet pipe, and the connection point of the outlet 2 of the stainless steel water tank is located between the butterfly valve 1 and the reaction vessel.

[0012] Preferably, the jacketed return water pipe is equipped with a second butterfly valve, and the connection point of the stainless steel water tank inlet pipe is located between the second butterfly valve and the reaction vessel.

[0013] Preferably, a centrifugal pump is installed on the pipe connecting the outlet of the stainless steel water tank and the inlet pipe of the jacket.

[0014] The advantages of this utility model compared to the prior art are as follows:

[0015] 1. This utility model overcomes the problems of traditional cooling tower systems that use room temperature water for cooling, such as poor cooling effect, easy loss of activity of soybean protein adhesive, increased viscosity of adhesive, short storage period, and long cooling time. The cooling temperature of room temperature water is not low enough. By installing a refrigeration unit, the cooling effect of soybean protein adhesive is improved, and the problems of easy fermentation of adhesive and storage period of less than 3 days caused by room temperature water cooling are solved. The reaction temperature is greatly reduced by water-cooled screw chiller unit, so that the storage period of soybean protein adhesive can reach 15 days after low temperature storage.

[0016] 2. This utility model connects a water-cooled screw chiller, a stainless steel water tank, and a reaction vessel through pipelines, enabling the cooling water to circulate internally, reducing water waste. The water heated in the jacketed return water pipeline enters the stainless steel water tank, and the water in the stainless steel water tank is then cooled by the water-cooled screw chiller. The cooled water is then cooled by the jacketed inlet water pipeline, thereby significantly reducing the reaction temperature in the reaction vessel. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a freezing system for preparing soybean protein adhesive according to the present invention.

[0018] In the attached diagram: 1. Reactor; 2. Jacketed water inlet pipe; 3. Jacketed water return pipe; 4. Refrigeration unit; 5. Cooling water inlet pipe; 6. Cooling water return pipe; 7. Water-cooled screw chiller unit; 8. Stainless steel water tank; 9. Outlet 1; 10. Outlet 2; 11. Inlet; 12. Centrifugal pump 1; 13. Cooling water inlet; 14. Cooling water outlet; 15. Butterfly valve 1; 16. Butterfly valve 2; 17. Centrifugal pump 2. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, preferred embodiments are described below to further illustrate this utility model in detail. However, it should be noted that many details listed in the specification are merely to provide the reader with a thorough understanding of one or more aspects of this utility model; these aspects can be achieved even without these specific details.

[0020] Please see Figure 1 As shown, a freezing system for preparing soybean protein adhesive includes a reactor 1, an external jacketed water inlet pipe 2 and a jacketed water return pipe 3. A freezing unit 4 is connected to the external jacket of the reactor 1. The freezing unit 4 includes a cooling water inlet pipe 5 connected to the jacketed water inlet pipe, a cooling water return pipe 6 connected to the jacketed water return pipe 3, and a water-cooled screw chiller unit 7. The cooling water inlet pipe 5 and the cooling water return pipe 6 are arranged on the side wall of the water-cooled screw chiller unit 7. The cooling water inlet pipe 5 is connected to the jacketed water inlet pipe 2, and the cooling water return pipe 6 is connected to the jacketed water return pipe 3.

[0021] In one embodiment, the water-cooled screw chiller 7 is connected to a stainless steel water tank 8 via a pipe. The stainless steel water tank 8 is provided with an outlet 9, an outlet 10, and an inlet 11. A centrifugal pump 12 is installed on the pipe connecting the water-cooled screw chiller 7 to the outlet 9 of the stainless steel water tank 8.

[0022] In one embodiment, the water-cooled screw chiller unit 7 includes upper and lower tanks that are interconnected. A cooling water inlet 13 and a cooling water outlet 14 are provided on the surface of the upper tank. A centrifugal pump 12 is connected to the cooling water inlet 13. The water-cooled screw chiller unit 7 is made of 30T material. The cooling water outlet 13 is connected to the water inlet 11 of the stainless steel water tank 8 via a pipe.

[0023] In one embodiment, the outlet 10 of the stainless steel water tank 8 is connected to the interlayer water inlet pipe 2, and a butterfly valve 15 is installed on the interlayer water inlet pipe 2. The connection point of the outlet 10 of the stainless steel water tank 8 is located between the butterfly valve 15 and the reactor 1.

[0024] In one embodiment, the jacketed return water pipe 3 is equipped with a butterfly valve 16, and the inlet 11 of the stainless steel water tank 8 is located between the butterfly valve 16 and the reactor 1.

[0025] In one embodiment, a centrifugal pump 17 is installed on the pipe connecting the outlet 10 of the stainless steel water tank 8 and the interlayer water inlet pipe 2.

[0026] Example 1

[0027] Please see Figure 1 As shown, a refrigeration system for preparing soybean protein adhesive includes a reactor 1, an external jacketed water inlet pipe 2 and a jacketed water return pipe 3. A refrigeration unit 4 is connected to the external jacket of the reactor 1. The refrigeration unit 4 includes a cooling water inlet pipe 5 connected to the jacketed water inlet pipe, a cooling water return pipe 6 connected to the jacketed water return pipe 3, and a water-cooled screw chiller unit 7. The cooling water inlet pipe 5 and the cooling water return pipe 6 are arranged on the side wall of the water-cooled screw chiller unit 7. The cooling water inlet pipe 5 is connected to the jacketed water inlet pipe 2, and the cooling water return pipe 6 is connected to the jacketed water return pipe 3. The cooling water inlet pipe 5 and the cooling water return pipe 6 are made of DN125 pipe. The water-cooled screw chiller 7 cools the ambient temperature water to below 10°C. The cooling water flows from the cooling water inlet pipe 5 into the jacketed water inlet pipe 2, which cools the soybean protein adhesive prepared in the reactor. The low temperature keeps the activity of the soybean protein adhesive good and the viscosity of the adhesive is low. The low temperature of the chilled water reduces the heat generated by the reaction quickly and increases the storage period of the soybean protein adhesive. The storage time of the soybean protein adhesive after being chilled can reach 15 days.

[0028] The water-cooled screw chiller unit 7 is connected to a stainless steel water tank 8 via pipelines. The stainless steel water tank 8 has an outlet 9, an outlet 10, and an inlet 11. A centrifugal pump 12 is installed on the pipeline connecting the water-cooled screw chiller unit 7 to the outlet 9 of the stainless steel water tank 8. The centrifugal pump 12 is a PDL125-11 model, and the stainless steel water tank 8 has a capacity of 8m³. 3The outlet 10 of the stainless steel water tank 8 is connected to the jacketed water inlet pipe 2. A butterfly valve 15 is installed on the jacketed water inlet pipe 2. The connection point of the outlet 10 of the stainless steel water tank 8 is located between the butterfly valve 15 and the reactor 1. The butterfly valve 15 is DN250. A butterfly valve 16 is installed on the jacketed return water pipe 3. The connection point of the inlet 11 of the stainless steel water tank 8 is located between the butterfly valve 16 and the reactor 1. The butterfly valve 16 is DN250. A centrifugal pump 17 is installed on the pipe connecting the outlet 10 of the stainless steel water tank 8 and the jacketed water inlet pipe 2. The centrifugal pump 17 is PDL125-11. The water-cooled screw chiller unit 7 includes two tanks, upper and lower, which are interconnected. A cooling water inlet 13 and a cooling water outlet 14 are provided on the surface of the upper tank. The centrifugal pump 12 is connected to the cooling water inlet 13. The water-cooled screw chiller unit 7 is made of 30T material. The cooling outlet 13 is connected to the inlet 11 of the stainless steel water tank 8 via a pipe. The stainless steel water tank 8 stores room temperature water and is connected to a water source. Water from outlet 9 enters the cooling inlet 13 of the water-cooled screw chiller unit 7 through a pipe and centrifugal pump 12 for cooling. A portion of the water enters the outer jacket of the reactor through the cooling inlet pipe 5, while another portion enters the cooling outlet 14 and returns to the inlet 11 of the stainless steel water tank 8 through a pipe. The outlet 10 of the stainless steel water tank 8 is connected to the jacket inlet pipe 2. A temperature control device is installed in the jacket inlet pipe 2 to control the inlet temperature of the room temperature water and the chilled water, thereby controlling the temperature difference of the jacket heat exchange within the range required for the reaction.

[0029] In summary, the freezing system for preparing soybean protein adhesive according to this invention is:

[0030] In the preparation of soybean protein adhesive, water from stainless steel water tank 8 flows into the pipeline from outlet 9. Centrifugal pump 12 transports the water from the pipeline to the cooling inlet 13 of the water-cooled screw chiller unit 7 for freezing. The frozen water enters the cooling inlet pipe 5 and the jacketed inlet pipe 2 into the jacket of the reactor to exchange heat generated by the reaction. The water after heat exchange returns to the water-cooled screw chiller unit 7 from the jacketed return water pipe 3 and the cooling return water pipe 6 for freezing. Alternatively, the water after heat exchange enters the stainless steel water tank 8 from the jacketed return water pipe 3 through the pipeline to inlet 11. Butterfly valve 16 is used to control whether the water after heat exchange enters the water-cooled screw chiller unit 7 or the stainless steel water tank 8. The outlet 10 of stainless steel water tank 8 directly connects room temperature water to the jacketed inlet pipe 2 through a pipeline. Butterfly valve 15 is used to control whether the room temperature water from the cooling inlet pipe 5 of the water-cooled screw chiller unit 7 or the outlet 10 of stainless steel water tank 8 enters the jacketed inlet pipe 2.

[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A freezing system for preparing soybean protein adhesive, comprising a reaction vessel, an external jacketed water inlet pipe, and a jacketed water return pipe, characterized in that, A refrigeration unit is connected to the outer jacket of the reactor. The refrigeration unit includes a cooling water inlet pipe connected to the jacket water inlet pipe, a cooling water return pipe connected to the jacket water return pipe, and a water-cooled screw chiller unit. The cooling water inlet pipe and the cooling water return pipe are provided on the side wall of the water-cooled screw chiller unit. The cooling water inlet pipe is connected to the jacket water inlet pipe, and the cooling water return pipe is connected to the jacket water return pipe.

2. The freezing system for preparing soybean protein adhesive according to claim 1, characterized in that, The water-cooled screw chiller unit is connected to a stainless steel water tank via a pipeline. The stainless steel water tank is equipped with an outlet, an outlet, and an inlet. A centrifugal pump is installed on the pipeline connecting the water-cooled screw chiller unit to the outlet of the stainless steel water tank.

3. The freezing system for preparing soybean protein adhesive according to claim 2, characterized in that, The water-cooled screw chiller unit includes two tanks, an upper tank and an lower tank, which are interconnected. A cooling water inlet and a cooling water outlet are provided on the surface of the upper tank. The centrifugal pump is connected to the cooling water inlet.

4. The freezing system for preparing soybean protein adhesive according to claim 3, characterized in that, The cooling water outlet is connected to the water inlet of the stainless steel water tank via a pipe.

5. A freezing system for preparing soybean protein adhesive according to claim 4, characterized in that, The outlet 2 of the stainless steel water tank is connected to the interlayer water inlet pipe. A butterfly valve 1 is installed on the interlayer water inlet pipe. The connection point of the outlet 2 of the stainless steel water tank is located between the butterfly valve 1 and the reaction vessel.

6. The freezing system for preparing soybean protein adhesive according to claim 4, characterized in that, The jacketed return water pipe is equipped with butterfly valve two, and the connection point of the stainless steel water tank inlet pipe is located between butterfly valve two and the reaction vessel.

7. A freezing system for preparing soybean protein adhesive according to claim 5, characterized in that, Centrifugal pump 2 is installed on the pipe connecting the outlet 2 of the stainless steel water tank and the inlet pipe of the interlayer.

Images