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A kind of process control method of lysine acetate preparation process

A technology for the preparation of lysine acetate, which is applied in the field of process control of the preparation process of lysine acetate, can solve the problems of low concentration of lysine acetate decolorization and filtration, blockage of filter pipes, and influence on product quality, so as to avoid excessive Effects of collecting, reducing chromatic aberration, and reducing energy consumption

Active Publication Date: 2022-07-01
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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  • A kind of process control method of lysine acetate preparation process
  • A kind of process control method of lysine acetate preparation process
  • A kind of process control method of 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 according to the concentration of 10-15%, then add an appropriate amount of concentrated hydrochloric acid, adjust the pH value to 2.0-5.0, and use optical rotation The optical rotation of the prepared solution is measured by the instrument, and the optical rotation is preferably controlled at 1.0 to 1.6.

[0039] The original process: 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 for the production equipment to be unable to accurately measure or the operator to operate the wrong operation to prepare the volume inaccurately, resulting in the concentration of the preparation solution being too low, resulting in waste of energy in the separation process and low single-batch yield; the pr...

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Abstract

The invention relates to a process control method for a preparation process of lysine acetate. In the process steps of preparing a lysine hydrochloride solution, preparing a lysine acetate solution, and crystallization and refining lysine acetate, the monitoring of optical rotation is used to realize the process. Control over process nodes. The control method of using a polarimeter for detection in the preparation process of lysine acetate of the present invention can be more rapid, intuitive and accurate. Reduce the color difference of ninhydrin test. More intuitive and accurate monitoring and control of the concentration (optical rotation) of each process link, preventing material loss or excessive waste, improving product purity, and making the production process of lysine acetate simpler, more accurate and easier to control.

Description

technical field [0001] The invention belongs to the field of preparation of lysine acetate, in particular to a process control method for the preparation process of lysine acetate. Background technique [0002] The preparation process of lysine acetate includes: the preparation of lysine hydrochloride solution, the preparation of lysine solution, the preparation of lysine acetate solution, and the crystallization and refining process of lysine acetate. There are the following problems: 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 for the production equipment to be unable to accurately measure or the operator to operate the wrong operation to prepare the volume inaccurately, resulting in the concentration of the preparation solution being too low, resulting in waste of energy in the separation process and low single-batch yield;...

Claims

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Application Information

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Patent Type & Authority Patents(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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