54results about How to "Solving Quality Control Issues" patented technology

The invention relates to a method for producing polymer grade 1-butene from C4 catalyzed by high sulfur in a refinery, which is a purification method for C4 catalyzed by the high sulfur that is the by-product of refinery process in petrochemical industry. The invention discloses that coarse desulfurization of the C4 catalyzed by a high sulfur refinery is carried out in a de-C5 tower, and at least desulfurizing, drying, organic sulfur removing and washing are carried out by a water scrubber and a reactor, thereafter, material flow enters the reactor and etherification is carried out for removing isobutene, as well as hydrogenation is added selectively and removing diene. Then the material flow is separated by a distillation column, and adsorbed by a molecular sieve in the reactor, so as to obtain the polymer grade 1-butene with the purity of the 1-butene to be over 99 percent, wherein, the total sulfur content is less than 2mg / m<3>. By adopting the invention, the mixed C4 with high sulfur is desulfurized at first until the sulfur content is less than 10mg / m<3>, and then enters different reactors, and the catalyst activity is not affected, thus leading the 1-butene to achieve polymer grade standard finally. The production technique of the invention is characterized by short process, easy operation, and the like, and has the advantages of environmental sanitation, safe production and comparatively low cost.

The invention relates to cotton-like lining cloth which is formed by blending viscose fibre / polyester staple fiber blended yarn serving as warp yarn and functional polyester filament serving as weft yarn, wherein the functional polyester filament can absorb and discharge moisture. In addition, a production process of the cotton-like lining cloth is further related. The production process includes the following steps: 1, warp yarn selection; 2 weft yarn selection; 3, weaving; 4, overflow desizing and bleaching processing or overflow desizing and bath dyeing processing; 5, dehydration; 6, scotching; 7, sizing; 8, coating calendaring; 9, perching volume classification; and 10, laboratory sample detection.

The invention relates to a compound maquindox injection for veterinary use and a preparation method thereof. The injection is made from maquindox, atropine sulfate, organic solvent and water. As a special compound preparation for veterinary use, the injection has special efficacy on severe diseases caused by treponema such as swine dysentery, piglet yellow dysentery, white dysentery, calf diarrhea, paratyphoid, bacterial enteritis, and the like, and has the advantages of convenient use, short treatment course, low drug resistance, and the like.