Method for enhancing performance of paper for daily use by adding cassava starch and application

Abstract

The invention relates to a method for enhancing the performance of paper for daily use by adding cassava starch and application. The method comprises the following steps: S1, adding clear water into a preparation barrel, and then closing a valve; s2, starting a stirrer; s3, adding starch into the preparation barrel, and then closing a feeding opening; s4, a steam valve is opened, the temperature in the preparation barrel is increased to 90 DEG C, and then the steam valve is closed; s5, continuously adding clear water into the preparation barrel, and stirring; and S6, a discharging valve is opened till all the materials are discharged into the storage tank. The problems that the cost cannot be saved and the energy consumption is too high in a method for improving the strength of the raw paper by increasing the use amount of long fibers, improving the strength of the raw paper, increasing the disc mill power and improving the beating degree are solved.

Description

Technical Field

[0001] The invention relates to the field of household paper, and in particular to a method and application of enhancing the performance of household paper by adding cassava starch. Background Art

[0002] When the tension of current household paper needs to be increased, the amount of long fibers is often increased (long fibers are more expensive than short fibers). This can increase the strength of the base paper. However, the cost increases significantly after the long fibers are added. To increase the tension of household paper, it is necessary to increase the disc grinding power and increase the beating degree to increase the strength of the base paper. After the power is increased, the unit electricity consumption increases, dehydration of the wire is difficult, and the steam consumption is large. Summary of the invention

[0003] The embodiments of the present application provide a method and application for enhancing the performance of household paper by adding cassava starch, thereby solving the problem that the methods in the prior art of increasing the strength of base paper by increasing the amount of long fibers and increasing the disc grinding power and the beating degree to improve the strength of base paper cannot save costs and have too high energy consumption.

[0004] The technical solution adopted in the embodiments of the present application is as follows.

[0005] A method and application of adding cassava starch to enhance the performance of daily paper, comprising S1, adding clean water into a preparation barrel and then closing the valve; S2, starting a stirrer; S3, adding starch into the preparation barrel and then closing the feeding port; S4, opening a steam valve, raising the temperature in the preparation barrel to 90° and then closing the steam valve; S5, continuing to add clean water into the preparation barrel and then stirring; S6, opening a discharge valve until all the material is discharged into a storage tank.

[0006] As a further improvement of the above technical solution: the amount of clean water in step S1 is 300 kg.

[0007] As a further improvement of the above technical solution: the volume of the preparation barrel in step S1 is 1 cubic meter.

[0008] As a further improvement of the above technical solution: the agitator in step S2 is a vertical agitator and the rotation speed is set to 250 rpm.

[0009] As a further improvement of the above technical solution: in step S3, the specific gravity of starch is 25 kg and the temperature in the preparation barrel is 20±5° C., and the concentration is 7.7%.

[0010] As a further improvement of the above technical solution: before adding clean water in step S5, the speed of the stirrer is adjusted to 70 rpm.

[0011] As a further improvement of the above technical solution: the stirring time in step S5 is 15 minutes; at this time, the concentration of the liquid in the preparation barrel is 3.0% and the temperature is 60±5°C.

[0012] As a further improvement of the above technical solution: when the discharge valve is opened in step S6, the agitator rotates synchronously until the liquid level in the preparation barrel reaches 0 and then stops.

[0013] As a further improvement of the above technical solution: the starch is a modified cassava starch, which has the appearance of white powder, whiteness: 85Min, substitution degree: 0.080-0.110, pH: 5.5-7.5, and viscosity: 500cps Min.

[0014] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0015] 1. Since the volume of the preparation barrel is 1 cubic meter, the clean water valve on the preparation barrel is opened in advance, and then 300 kg of clean water is injected into the preparation barrel, and then the agitator is turned on, the speed is set to 250 rpm, and then the feeding port is opened to feed 25 kg of starch into the feeding port. At this time, the agitator continues to stir, and the temperature in the preparation barrel is 20±5°C, and the concentration is 7.7%. Then the steam valve is opened to raise the temperature in the preparation barrel to 90°C. When it reaches 90°C, the steam valve is closed to keep warm for 25 minutes. When the insulation time is up, the speed of the agitator is adjusted to 70 rpm, and the clean water valve is opened to inject 500 kg of clean water into the preparation barrel. Then the clean water valve is closed and stirred for 15 minutes. At this time, the concentration of the liquid in the barrel is 3.0%, and the temperature is 60±5°C. Then the stirred liquid is discharged to the storage tank, and the storage tank discharges the liquid into the pulp mixing tank. Then the stirred liquid is injected according to the index, 1-1.5 kg of starch absolute dry weight / ton of paper, thereby achieving cost reduction and energy consumption while being convenient for operation. DETAILED DESCRIPTION

[0016] The embodiments of the present application provide a method and application for enhancing the performance of household paper by adding cassava starch, thereby solving the problem that the methods in the prior art of increasing the strength of base paper by increasing the amount of long fibers and increasing the disc grinding power and the beating degree to improve the strength of base paper cannot save costs and have too high energy consumption.

[0017] The technical solution in the embodiment of the present application is to solve the above problems, and the overall idea is as follows

[0018] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with specific implementation methods.

[0019] A method and application of adding cassava starch to enhance the performance of daily paper, comprising S1, adding clean water into a preparation barrel and then closing the valve; S2, starting a stirrer; S3, adding starch into the preparation barrel and then closing the feeding port; S4, opening a steam valve, raising the temperature in the preparation barrel to 90° and then closing the steam valve; S5, continuing to add clean water into the preparation barrel and then stirring; S6, opening a discharge valve until all the material is discharged into a storage tank.

[0020] The amount of clean water in step S1 is 300 kg.

[0021] The volume of the preparation barrel in step S1 is 1 cubic meter.

[0022] The stirrer in step S2 is a vertical stirrer and the rotation speed is set to 250 rpm.

[0023] In step S3, the starch specific gravity is 25 kg and the temperature in the preparation barrel is 20±5° C., and the concentration is 7.7%.

[0024] Before adding clean water in step S5, the speed of the stirrer was adjusted to 70 rpm.

[0025] The stirring time in step S5 is 15 minutes; at this time, the liquid concentration in the preparation barrel is 3.0% and the temperature is 60±5°C.

[0026] When the discharge valve is opened in step S6, the agitator rotates synchronously until the liquid level in the preparation barrel reaches 0 and stops.

[0027] The starch is a modified cassava starch, which has the appearance of white powder, whiteness: 85Min, substitution degree: 0.080-0.110, pH: 5.5-7.5, and viscosity: 500cps Min.

[0028] Since the volume of the preparation barrel is 1 cubic meter, the clean water valve on the preparation barrel is opened in advance, and then 300 kg of clean water is injected into the preparation barrel, and then the agitator is turned on, the speed is set to 250 rpm, and then the feeding port is opened to feed 25 kg of starch into the feeding port. At this time, the agitator continues to stir, and the temperature in the preparation barrel is 20±5°C, and the concentration is 7.7%. Then the steam valve is opened to increase the temperature in the preparation barrel to 90°C. When it reaches 90°C, the steam valve is closed to keep warm for 25 minutes. When the insulation time is up, the speed of the agitator is adjusted to 70 rpm, and the clean water valve is opened to inject 500 kg of clean water into the preparation barrel. Then the clean water valve is closed and stirred for 15 minutes. At this time, the concentration of the liquid in the barrel is 3.0%, and the temperature is 60±5°C. Then the stirred liquid is discharged to the storage tank, and the storage tank discharges the liquid into the pulp mixing tank. Then the stirred liquid is injected according to the index, 1-1.5 kg of starch absolute dry weight / ton of paper, thereby achieving cost reduction and energy consumption while being convenient to operate.

[0029] Comparison of starch addition shows that

[0030]

[0031] Comparison of the proportion of long fibers used shows that

[0032]

[0033] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0034] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method and application of adding cassava starch to enhance the performance of household paper, characterized in that: The process includes S1, adding clean water into the preparation barrel and closing the valve; S2, starting the agitator; S3, adding starch into the preparation barrel and closing the feeding port; S4, opening the steam valve, raising the temperature in the preparation barrel to 90° and then closing the steam valve; S5, continuing to add clean water into the preparation barrel and stirring; S6, opening the discharge valve until all the starch is discharged into the storage tank.

2. The method and application of adding cassava starch to enhance the performance of household paper as claimed in claim 1, characterized in that: The amount of clean water in step S1 is 300 kg.

3. The method and application of adding cassava starch to enhance the performance of household paper according to claim 1, characterized in that: The volume of the preparation barrel in step S1 is 1 cubic meter.

4. The method and application of adding cassava starch to enhance the performance of household paper according to claim 1, characterized in that: The stirrer in step S2 is a vertical stirrer and the rotation speed is set to 250 rpm.

5. The method and application of adding cassava starch to enhance the performance of household paper according to claim 1, characterized in that: In step S3, the starch specific gravity is 25 kg and the temperature in the preparation barrel is 20±5° C., and the concentration is 7.7%.

6. The method and application of adding cassava starch to enhance the performance of household paper according to claim 1, characterized in that: Before adding clean water in step S5, the speed of the stirrer was adjusted to 70 rpm.

7. The method and application of adding cassava starch to enhance the performance of household paper according to claim 1, characterized in that: The stirring time in step S5 is 15 minutes; at this time, the liquid concentration in the preparation barrel is 3.0% and the temperature is 60±5°C.

8. The method and application of adding cassava starch to enhance the performance of household paper according to claim 1, characterized in that: When the discharge valve is opened in step S6, the agitator rotates synchronously until the liquid level in the preparation barrel reaches 0 and stops.

9. The method and application of adding cassava starch to enhance the performance of household paper according to claim 1, characterized in that: The starch is a modified cassava starch, which has the appearance of white powder, whiteness: 85Min, substitution degree: 0.080-0.110, pH: 5.5-7.5, and viscosity: 500cps Min.

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