3results about How to "High chroma" patented technology

The application discloses a method for continuously preparing high-purity sulfolane, and belongs to the technical field of organic synthesis. By introducing a solvent and a stable free radical type polymerization inhibitor, the self-polymerization of butadiene is effectively inhibited. By adopting a cooling crystallization mode to remove sulfur dioxide, the thermal decomposition of sulfolene sulfone is avoided, high yield and high purity are realized, the service life of a hydrogenation catalyst is not affected, and the catalyst can be completely reused. The cooling crystallization also realizes the separation of the polymerization inhibitor and sulfolene sulfone. The polymerization inhibitor is dissolved in the solvent and recycled, and does not enter the hydrogenation system, so that the final sulfolane product has a purity of above 99.9% and has no chromaticity problem. The process saves energy consumption, the solvent has wide universality, operation is simple, the process is safe and environment-friendly, easy to scale up, and meets the green production requirements.

The application discloses a method for homogenizing fermentation and producing aroma of cigar tobacco leaves and application thereof, and the method comprises the following steps: S1. After airing, the cigar tobacco leaves are initially humidified, and an apple acid solution with a pH value of 7-7.5 is sprayed on the initially humidified cigar tobacco leaves, and the humidified tobacco leaves are balanced to obtain humidified tobacco leaves; S2. The humidified tobacco leaves are wrapped with gauze, and then fermented to obtain aroma-producing cigar tobacco leaves. Through the addition of the apple acid, the humidification and fermentation of the cigar tobacco leaves are realized, the aroma content of the fermented cigar tobacco leaves is improved, the homogenization degree of the color and aroma content of the fermented tobacco leaves is improved, and the amount of carotenoid conversion products, cembrane degradation products, phenylalanine conversion products and bomeol aroma substances is extremely obviously improved.

The present application relates to the technical field of microfluidic detection, and discloses a microfluidic detection system and a liquid detection method, wherein the microfluidic detection system comprises a paper-based microfluidic chip with a detection cell (21) and a regulation unit, the regulation unit is configured to regulate at least one of the environmental temperature, air flow speed, humidity and vacuum degree of the area where the detection cell is located, so as to regulate the limited evaporation speed of the liquid in the detection cell through the vent hole. According to the migration mechanism of colorimetric on the paper chip, the evaporation speed of different positions of the detection cell is regulated by covering the non-water-permeable and air-permeable part with a vent hole on the detection cell, and at the same time, the evaporation speed of the liquid in the detection cell through the vent hole is regulated by using the regulation unit, so as to effectively improve the efficiency of the colorimetric migrating and enriching with the supplement of moisture to the position with faster evaporation speed in the evaporation process, improve the detection sensitivity and reduce the detection limit.