PH value adjusting device for sodium polyacrylate production
A technology of pH adjustment and sodium polyacrylate, which is applied in the direction of feeding devices, chemical/physical/physicochemical processes, chemical instruments and methods, etc., can solve hysteresis, affect the molecular weight of sodium polyacrylate, and it is difficult to accurately reach the target pH Value and other issues
Active Publication Date: 2021-08-31
杭州聚和生物科技有限公司
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[0003] After research, it is found that the degree of polymerization of the polymerization reaction can be improved after the neutralization reaction of acrylic acid and liquid alkali from strong acidity to strong alkali (pH value 11-12) and then to a weak base. And the reaction system of reaction, when the pH value is between 7.5-8.5, the molecular weight of sodium polyacrylate produced is the highest, which is about 20% higher than that before improvement; The volume of reaction vessels in mass production is often large, and the change of pH value is delayed, so the current pH value displayed by the pH meter is hysteresis, making it difficult to accurately reach the target pH value, which in turn affects the produced sodium polyacrylate. Molecular weight, which affects product quality in production
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[0023] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.
[0024] Such as Figure 1-Figure 6 As shown, a kind of pH adjustment device for sodium polyacrylate production according to the present invention includes a kettle body 1, and the kettle body 1 is provided with a regulating liquid storage chamber 2 and a pH regulating chamber 3, and the regulating liquid storage chamber 2 is arranged on On the top of the pH adjusting chamber 3, the top of the kettle body 1 is provided with a regulating liquid injection port 21 communicating with the regulating liquid storage chamber 2, and one side of the kettle body 1 is provided with a liquid filling port 31 communicating with the top of the pH regulating chamber 3, and the kettle body 1 The other side of the body 1 is provided with a liquid outlet 32 communica...
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The invention relates to the field of sodium polyacrylate production and processing, in particular to a pH value adjusting device for sodium polyacrylate production. The device comprises a kettle body, and the bottom of the kettle body is provided with a separation mechanism for separating a pH value adjusting cavity into small cavities with the same volume. An intermittent mechanism used for intermittently adding a pH value regulator is arranged in the pH value adjusting cavity, a stirring mechanism used for stirring and mixing a sodium acrylate solution and the pH value regulator is arranged at the bottom of the intermittent mechanism, the pH value adjusting cavity is divided into the cavities with the same volume through a partition plate, and the same amount of pH value regulating liquid is dropwise added, thus the reaction speed is accelerated, so that the pH value of the sodium acrylate solution is more uniform, the accuracy of the value displayed by the pH meter is further improved, and the product quality is improved. The intermittent mechanism can intermittently add a pH value regulator into the cavities, so that the pH value change time of the sodium acrylate solution is shortened, the numerical value displayed on a pH meter is more accurate, and the molecular weight of the finished sodium polyacrylate is increased.
Description
technical field [0001] The invention relates to the field of sodium polyacrylate production and processing, in particular to a pH adjusting device for sodium polyacrylate production. Background technique [0002] Food additive sodium polyacrylate is a kind of anionic high molecular polymer. Its production process is through acid-base neutralization reaction to form sodium acrylate, then polymerize into colloid through initiator, and then produce it through granulation, drying and crushing processes. product. Sodium polyacrylate is widely used in food, medicine, petroleum, water treatment and other industries. In recent years, the market demand for ultra-high molecular weight sodium polyacrylate has been increasing. As the production process of sodium polyacrylate is becoming more and more perfect and mature, how to improve product quality and increase the molecular weight of sodium polyacrylate on the original basis is a common problem in the industry. [0003] After resea...
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IPC IPC(8): B01J19/18B01J4/00C08F20/06
CPCB01J19/18B01J19/0053B01J19/0066B01J4/001C08F20/06Y02P20/141
Inventor 刘润宇
Owner 杭州聚和生物科技有限公司