9 results about "Solvent fractionation" patented technology

The invention relates to the technical field of fractionation of lignocellulose biomass, and discloses a method for fractionating lignocellulose biomass by using a eutectic solvent, which comprises the following steps: mixing betaine and malic acid, stirring, and cooling to room temperature after the reaction is finished to obtain a clear and transparent eutectic solvent; the method comprises the following steps: mixing crushed lignocellulose biomass with a deep-eutectic solvent, and putting the mixture into a high-pressure reaction kettle; acetone and n-butyl alcohol are mixed according to the volume ratio of 3: 2-4: 1, and an anti-solvent is prepared; the method comprises the following steps: slowly adding an anti-solvent into a mixture of the lignocellulose biomass and the eutectic solvent, carrying out ultrasonic treatment, and then carrying out suction filtration. The glass electrode pH meter is used for measuring the pH value of the recovered deep-eutectic solvent, and the newly prepared deep-eutectic solvent is added according to the pH value, so that the stability of the solvent performance can be effectively maintained, the deep-eutectic solvent always keeps a good fractionation effect in multiple times of recycling, the utilization rate of the solvent is greatly improved, and the production cost is reduced.

The present invention relates to a self-stabilized precipitation polymerization method using an ether-containing solvent. The method of the present invention uses a solvent containing an ether compound as a polymerization reaction medium, wherein the boiling point of the ether compound is below 145 °C. By using a low-boiling ether solvent as the medium, the energy consumption of the solvent fractionation recovery operation is low, the solvent recycling is easy to carry out, the cost is low and it is more environmentally friendly.

The present invention discloses a device for recycling and utilization of organic solvent waste, which relates to the field of organic solvent recovery. The following scheme is now proposed, which includes: a heating kettle for heating the organic solvent; a fractionating tower for multi-stage distillation of the organic solvent, and the fractionating tower includes: a tower body, the inner cavity of the tower body is communicated with the inner cavity of the heating kettle; a tower plate fixed in the tower body, a liquid receiving groove is opened on one side of the tower plate, a downcomer is fixed on the other side of the tower plate, and an overflow weir is slidably connected in the downcomer; a bubble cap fixed on the tower plate, an adjusting cover is rotatably connected in the bubble cap, and a driving component is assembled on the top of the adjusting cover, and the driving component is used to drive the adjusting cover to rotate; by controlling the opening coincidence degree between the adjusting cover and the bubble cap, the steam flux can be dynamically adjusted, and by adjusting the height of the overflow weir, the flow rate of the organic solvent is controlled to ensure gas-liquid balance and avoid situations such as liquid leakage, thereby improving the recovery effect.

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.

Process including the solvent crystallization of edible fatty material into a crystal slurry containing at least solid crystallized stearin dispersed into a solution composed solvent and olein, and fu

The invention discloses an organic solvent waste utilization and recovery device, and relates to the field of organic solvent recovery. According to the scheme, the device comprises a heating kettle used for heating an organic solvent; the fractionating tower is used for multi-stage distillation of the organic solvent and comprises a tower body, and an inner cavity of the tower body is communicated with an inner cavity of the heating kettle; the tower plate is fixed in the tower body, a liquid receiving groove is formed in one side of the tower plate, a downcomer is fixed on the other side of the tower plate, and an overflow weir is connected in the downcomer in a sliding manner; the bubble cap is fixed on the tower plate, an adjusting cover is rotatably connected in the bubble cap, a driving assembly is assembled at the top of the adjusting cover, and the driving assembly is used for driving the adjusting cover to rotate; the steam flux can be dynamically adjusted by controlling the hole overlap ratio of the adjusting cover and the bubble cap, the gas-liquid balance is ensured by adjusting the height of the overflow weir and controlling the flow speed of the organic solvent, the conditions of liquid leakage and the like are avoided, and the recovery effect 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.

Rice bran lyso-gums is a new class of by-product obtained during degumming of crude rice bran oil using bio-catalyst. Presently, this particular by-product is having very limited applications and is fetching negligible value to the industry. On the other hand, it contains lyso -phospholipids which has known applications in food, surfactant, pharmaceutical and cosmetics industries. The present invention relates to processes for possible value addition to crude rice bran lyso-gums- an unexplored by-product of rice bran oil refinery. It describes efficient processes for possible upgradation, modification, enrichment and purification of crude rice bran lyso-gums to obtain lyso-PC enriched rice bran lyso-lecithin having lighter colour by using various unit operation like drying, bleaching, solvent fractionation and chromatographic separation techniques in sequential manner.