3 results about "Solvent fractionation" patented technology

A system for analyzing the biofilm inhibition efficacy of the plant rhizome extract, consisting of: a) a plant material collection unit configured to collect Hedychium forrestii var. forrestii rhizomes; b) an extraction unit configured to produce bioactive fractions from the rhizomes by ethanol extraction and solvent-solvent fractionation; c) a biofilm inhibition analysis unit configured to evaluate the effectiveness of biofilm inhibition using microtiter plate assay instruments; d) a microscopy unit for the analysis of biofilm morphology, consisting of a fluorescence microscope with EtBr / AO staining capability and a scanning electron microscope; e) A unit for analyzing amylolytic activity, configured to determine amylolytic properties using spectrophotometric instruments and DNA reagent; and f) a kinetic analysis unit for evaluating Michaelis-Menten kinetic parameters.

The invention provides a petal essence solvent fractionation device, and belongs to the technical field of plant essence extraction. Comprising a body, a feeding assembly is arranged at the top of the body, a cutting assembly is arranged at the bottom of the feeding assembly, the cutting assembly and the feeding assembly are fixedly connected through a valve, a distillation assembly is arranged at the bottom of the cutting assembly, the distillation assembly and the cutting assembly are fixedly connected through a valve, and an impurity removal assembly is arranged on one side of the distillation assembly. The impurity removal assembly comprises a sealing disc, a cooling assembly is fixedly connected to the bottom of the sealing disc, and an extraction assembly is arranged at the bottom of the cooling assembly. By arranging the extraction assembly, the petal essence is extracted in a graded mode so as to meet the differential requirements of diversified application scenes, meanwhile, due to the design of the two-way annular pipe, essence solvent steam and extract liquor steam can be liquefied at the same time, the solvent consumption cost is reduced, and meanwhile the resource circulation efficiency is improved.

This invention discloses a method for producing acetic acid from lignocellulose raw materials by solvent fractionation. Using non-grain biomass as raw material, the method achieves efficient separation of lignin from cellulose and hemicellulose through pretreatment with hydrogen peroxide-acetic acid aqueous solution. The lignin is then gasified with oxygen and steam to obtain syngas, eliminating the need for a water-gas conversion process. After selectively separating some carbon monoxide, the remaining gas is used to synthesize methanol, which is then dehydrated to obtain dimethyl ether. This dimethyl ether is then reacted with carbon monoxide for carbonylation and hydrolysis to obtain acetic acid and methanol. The methanol and acetic acid are recycled in a closed loop. The molecular sieve used in the carbonylation reaction is modified with alkali and phosphorus to improve the catalyst's lifespan. This method completely eliminates fossil raw materials in the production of acetic acid, resulting in a green and low-carbon chain with high raw material utilization.