membrane concentration

membrane concentration is a technology to reform the traditional process to achieve efficient purification and concentration. It uses the different molecular weight of the effective components and the liquid to achieve directional separation and achieve the effect of concentration. Compared with the traditional heating concentration, it has the advantages of low energy consumption, room temperature, and small impact on the product. It has been applied in the following applications:

1.Gelatin, Protein and Enzyme

ultrafiltration has become an efficient process for the purification and concentration of gelatin, proteins and enzymes, gelatin, etc. The advantage of ultrafiltration concentration is that there is no phase change, generally no heating, simplified process, applicablepHrange and prevent deactivation, it is suitable for the separation and concentration of heat-sensitive substances. Usually, the pretreated crude product is ultrafiltered to make some low-molecular substances and salts permeate the membrane, so that the enzyme and protein are concentrated and refined. Different molecular weight cut-off membranes, different membrane materials and processes can be used to purify and concentrate different enzymes and proteins.

2.Dyes

nanofiltration has been in molecular weight200~2000materials are widely used, such as dyes, antibiotics, peptides and amino acids. The general process is to remove salt by percolation at constant volume, then dehydrate and concentrate. According to the purity and concentration of the final product, the degree of salt removal at constant volume and the multiple of dehydration and concentration are determined. Practice has proved that nanofiltration can replace precipitation,pHadjustment and (partial) evaporation and other processes, to achieve the purpose of product purification and concentration, which is also a new high-efficiency energy-saving process.

3.fruit juice, tea juice and pharmaceutical preparations

fruit juice concentration is conducive to transportation and storage, and low-grade tea is processed into instant tea, which not only solves the outlet of low-grade tea, but also improves the efficiency. In juice concentrates, it is usually used first.UFclarified (pre-treated) and then concentrated by reverse osmosis, which can generally be concentrated20°BXabove. In tea juice concentration, the pretreated tea juice is concentrated to a solid content by reverse osmosis.15~20%, followed by frozen storage or spray drying. The application of membrane technology in this field is developing, and the clarification and concentration of pharmaceutical (Chinese herbal) preparations should be particularly noticeable,MF(UF)+NF(RO)is the most commonly used process.

The company according to different customers different production custom production of various membrane concentration equipment.