Extraction technology of 98.5% lysine hydrochloride

Abstract

The invention belongs to the technical field of lysine production, and particularly relates to an extraction technology of 98.5% lysine hydrochloride. The extraction technology of 98.5% lysine hydrochloride comprises the following steps: (1) ceramic membrane separation; (2) continuous ion exchange; (3) acid concentration; (4) crystallization; (5) baking, namely baking wet crystals obtained in the step (4) through a dryer until the moisture content is smaller than or equal to 1.5%, then removing small particles in a multi-stage swinging screening manner, re-dissolving excessive overtails and siftage and then returning to the step (4) to crystallize. The technology is reasonable in design, and the extracted 98.5% lysine hydrochloride is regular in crystal shape, uniform in size and strong in compressive capacity.

Description

technical field [0001] The invention belongs to the technical field of lysine production, and in particular relates to an extraction process of 98.5% lysine hydrochloride. Background technique [0002] Lysine is the eight essential amino acids (also known as essential amino acids, which are lysine, threonine, leucine, isoleucine, methionine, valine, phenylalanine and tryptophan) ) one, because the body cannot produce it on its own, it must be obtained through daily diet and nutritional supplements. As an amino acid, it is an essential part of protein. As we all know, protein is the main component of human cells. After protein in food enters the human body, it is first decomposed into amino acids after digestion, and then the human body uses these amino acids to synthesize new ones. Human proteins (such as immune antibodies, digestive enzymes, plasma proteins, growth hormones, etc. are all synthesized human proteins). Among the various amino acids in the synthesis of protei...

AI Technical Summary

Problems solved by technology

[0007] The existing 98.5% lysine hydrochloride extraction process adopts traditional plate and frame filtration, and the quality of the filtrate is poor. Only filter cloth and diatomite filter aid are used. Suspended solids and soluble proteins, and once these suspended solids and soluble proteins are dialyzed, the treatment effect of the subsequent separation process will be deteriorated, and the entire production cycle will be shortened, because these suspended solids and soluble proteins wrap the surface of the ion exchange resin , can not achieve the real exchange effect, not only affects the production efficiency, but also requires a large amount of washing water to rinse during the regeneration process, which increases the consumption of water and regeneration agent

The traditional plate and frame field operation environment adopts an open design, and the possibility of cross-contamination of materials is extremely high. The outside world can easily bring sundries and other foreign objects into the materials, affecting product quality. Furthermore, due to the open structure, on-site The operating environment is dirty, and the phenomenon of water vapor evaporation in the operating space is serious, which affects the health of the operators; in general, the traditional membrane filtration process, the core component of the filter membrane tube is affected by high pressure, which is easily damaged, causing material diafiltration and affecting product quality; and the general traditional membrane filtration process Filtration process cycle time is short, concentration ratio is low, overall membrane flux is not large

[0008] The traditional extraction process adopts continuous evaporation and crystallization, and adopts the forced circulation stimulation method of the circulating pump. Although a certain degree of supersaturation is controlled, due to the collision and friction of the particles at all levels in the strong movement, the crystal surface of the generated crystals is rough and the shape Irregularity, a large number of pseudocrystals and cluster crystals, and small particles make it difficult to separate the crystals from the mother liquor. The amount of crystals dissolved during washing is also large, and the loss of crystals is serious. It is difficult to dry the subsequent water and the product is easy to agglomerate

[0009] The traditional evaporation process adopts downstream evaporation and concentration, without preheating device, low steam and heat utilization rate, poor secondary steam utilization effect, large amount of cooling circulating water, and backward evaporation efficiency

[0010] The sieving requirements used in the traditional extraction process are not strict, and the particles of uneven size are mixed with each other, and the product is easy to agglomerate