Device and method for continuous cultivation and production of lysine

Abstract

The invention discloses a device for continuous cultivation and production of lysine. The device comprises a primary seed tank, a secondary seed tank and a fermentation tank group, wherein the primary seed tank, the secondary seed tank and the fermentation tank group are sequentially connected in series; the fermentation tank group is composed of a No.1 fermentation tank, a No.2 fermentation tank, a No.3 fermentation tank and a No.4 fermentation tank which are serially connected in series; a discharged material mixer and a settling tank are sequentially connected to the endmost side of the fermentation tank group in series; and an iron-exchange resin system, an MVR (mechanical vapor recompression) concentrator, a continuous crystallizing system, a centrifugal system and a fluidized bed drying system are sequentially arranged at the downstream side of the settling tank. Meanwhile, the invention also discloses a method for continuous cultivation and production of the lysine. With the application of the device and the method provided by the invention, investment cost to the seed tanks and the fermentation tanks is reduced, a fermentation flow is shortened and lysine fermentation cost is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of amino acid production, in particular to a method and device for producing lysine by continuous culture. Background technique [0002] Lysine is the eight basic amino acids necessary for the human body (also known as essential amino acids, they are lysine, threonine, leucine, isoleucine, methionine, valine, phenylalanine and tryptophan )one. Lysine has a high solubility in water, and it is easy to absorb carbon dioxide in the air, so it is difficult to obtain its crystallization. Therefore, as a commodity it often appears in the form of monohydrochloride. Lysine has a wide range of uses and is mainly used in the following industries: food industry, preparation of nutritional enhancers, flavoring agents, and sweeteners; feed industry, preparation of nutritional enhancers; pharmaceutical industry, preparation of amino acid infusions, amino acid derivatives, and amino acid salts; Chemical industry, prepara...

AI Technical Summary

Problems solved by technology

After the fermentation, the acid adjustment tank is stored for a period of time, and the problem of bacterial contamination is prone to occur. The acid adjustment of the fermentation broth is adjusted in batches, and there is instability between batches, which will cause a burden for the subsequent extraction process.

Then enter the ceramic membrane for filtration, the clear liquid enters the continuous ion exchange resin, and the waste water from the ion exchange is directly discharged, which causes great pollution to the environment

Part of the lysine data needs to be detected during the fermentation and extraction process, such as the lysine concentration in the fermenter, the lysine content in the clear liquid after the fermentation broth passes through the membrane, the lysine content in the high-concentration wastewater after separation, The lysine content in the collected liquid after handing over, the lysine content in the collected liquid after concentration and other indicators, according to the routine detection, need to take samples and use the ninhydrin method for detection, which is not only time-consuming and laborious, but also lags behind in the control of continuous production parameters

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