2 results about "Winterization" patented technology

A system and a method for performing an automated winterization process for a swimming pool or spa are provided. A temperature sensor collects a sensed temperature value, which is transmitted and processed by a control system of a connected aquatic system. Based on the sensed temperature value, the swimming pool or spa control system executes the automated winterization process for the swimming pool or spa. The automated winterization process includes displacing water with air using an air-moving device in a first loop path and a second loop path using one or more actuated automatic valves.

The present application relates to the field of medicine manufacturing, and relates to a preparation method of natural source cholesterols for injection, which comprises the following steps: taking fish oil, cooling and winterizing, taking the lower sediment, heating to dissolve it into clear winterization fraction, adding the winterization fraction into a chromatographic column filled with mixed filler of adsorbent and filter aid which are mixed uniformly in a physical way to perform circulation chromatography, emptying the winterization fraction after the circulation ends, adding eluent to the chromatographic column, and recovering the solvent after the eluent is combined to obtain cholesterols concentrate. The cholesterols concentrate is added with first crystallization solvent to recrystallize and refine twice, the cholesterols crude product after recrystallization is taken and added with second crystallization solvent to recrystallize and refine, and the product is dried under reduced pressure to obtain cholesterols for injection. The present application solves the technical problem of preparing cholesterols for injection from fish oil, is suitable for large-scale industrialization of cholesterols, can be applied to preparation of complex preparations such as liposomes, and improves the safety of drug use.