| abstract |
FIELD: chemistry. n SUBSTANCE: group of inventions relates to biotechnology. Claimed is group of inventions: method of obtaining chemical product and apparatus for obtaining chemical product by claimed method. Microorganisms or culture cells are cultivated in fermentation reservoir. Culture liquid is transferred from fermentation reservoir into reservoir of membrane separation for filtration of culture liquid through separation membrane. Fermentation product is collected from liquid obtained after filtration as chemical product. Reverse discharge of unfiltered culture liquid into fermentation reservoir for combination with culture liquid, which did not pass through membrane separation reservoir, is provided. One part of culture liquid is directed to bypass membrane separation reservoir back into fermentation reservoir. Volume of culture liquid flow is regulated in such a way that manometric pressure of culture liquid from the side of flow outlet into membrane separation reservoir constitutes 1 MPa or less. Apparatus includes fermentation reservoir, membrane separation reservoir, circulation pipeline, which connects fermentation reservoir with membrane separation reservoir, means for transfer of culture liquid, installed into circulation pipeline, bypass pipeline for membrane separation reservoir, means for registration of flow pressure from the side of flow inlet into membrane separation reservoir, means for regulation of flow volume, installed into bypass pipeline. n EFFECT: inventions ensure increased output of end product. n 13 cl, 23 dwg, 6 tbl, 11 ex |