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Process control method for lysine acetate preparation process

A technology for the preparation of lysine acetate, which is applied in the process control field of the preparation process of lysine acetate, can solve the problems of low concentration of lysine acetate decolorization and filtration, blockage of filter pipes, increase of energy consumption for concentration, etc., to avoid Effects of excessive collection, reduction of color difference, and saving of concentrated gas

Active Publication Date: 2019-12-13
宜昌三峡普诺丁生物制药有限公司
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Problems solved by technology

4. When the theoretical value calculation method is used for neutralization and salt conversion, it is easy to cause the concentration of lysine acetate decolorization and filtration to be too low or too high. The speed will cause crystallization in the filter and pipeline to block the pipeline, and frequent removal of the filter will cause material loss, reduce yield, and affect product quality.

Method used

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  • Process control method for lysine acetate preparation process
  • Process control method for lysine acetate preparation process
  • Process control method for lysine acetate preparation process

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Embodiment 1

[0038] 1. Preparation of lysine hydrochloride solution: add an appropriate amount of purified water into the preparation tank, add lysine hydrochloride at a concentration of 10-15%, then add an appropriate amount of concentrated hydrochloric acid, adjust the pH value to 2.0-5.0, use an optical Measure the optical rotation of the prepared solution with an instrument, and it is advisable to control the optical rotation at 1.0-1.6.

[0039] Original process: The solution was prepared according to the theoretical calculation value, and the actual concentration of the solution was not tested. In this way, in large-scale production, it is often easy to cause inaccurate measurement of production equipment or inaccurate preparation volume due to operator error, resulting in too low concentration of the preparation solution, resulting in waste of energy in the delivery process and low single-batch yield; the preparation solution is too high, It is easy to cause waste of materials in th...

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Abstract

The invention relates to a process control method for a lysine acetate preparation process. Process nodes are controlled by monitoring the optical rotation in the process steps of preparing a lysine hydrochloride solution, preparing a lysine acetate solution and crystallizing and refining lysine acetate. The control method for detecting the lysine acetate by using a polarimeter in the preparationprocess of the lysine acetate can be quick, intuitive and accurate, reduces the color difference of ninhydrin test. The method can visually and accurately control the concentration (optical rotation)of each process link to prevent loss or excessive waste of materials and improve the purity of the product, so the lysine acetate production operation process is simple and accurate, and is easy to control.

Description

technical field [0001] The invention belongs to the field of lysine acetate preparation, in particular to a process control method for the preparation process of lysine acetate. Background technique [0002] The preparation process of lysine acetate includes: preparation of lysine hydrochloride solution, preparation of lysine solution, preparation of lysine acetate solution, crystallization and refining process of lysine acetate. The following problems exist: 1. The solution is prepared according to the theoretical calculation value, and the actual concentration of the solution is not detected. In this way, in large-scale production, it is often easy to cause inaccurate measurement of production equipment or inaccurate preparation volume due to operator error, resulting in too low concentration of the preparation solution, resulting in waste of energy in the delivery process and low single-batch yield; the preparation solution is too high, It is easy to cause waste of mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C227/40C07C227/18C07C51/41C07C229/26C07C53/10
CPCC07C227/18C07C227/40C07C51/412C07C229/26C07C53/10
Inventor 李春梅张国龙郑炜杨君赵红洲胡秀兰
Owner 宜昌三峡普诺丁生物制药有限公司
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