60results about How to "Fast phase separation" patented technology

The present invention is wet process of extracting vanadium and / or molybdenum form waste petrochemical catalyst alumina carrier containing V, Mo and other elements. The wet process includes high-temperature deoiling the catalyst in natural granularity, mixing with sodium carbonate, high-temperature oxidation and roasting in a kiln or furnace to obtain water soluble sodium vanadate and sodium molybdate; countercurrent water soaking of the chamotte to obtain solution containing V and Mo in certain concentration, adding calcium salt and magnesium salt to eliminate P and other impurities, addingammonium salt solution into the clear solution to obtain ammonium metavanadate, decomposing and melting ammonium metavanadate to obtain V2O5 product; adding acid to the supernatant and organic phase extraction of Mo, ammonia water reverse extraction to obtain ammonium molybdate, and adding acid to precipitate ammonium tetramolybdate or molybdate product.

The invention provides a composite extractant suitable for coal-based naphtha and a method for preparing solvent oil. The composite extractant is composed of 70 parts of sulfolane, 20 to 30 parts of propylene carbonate, and 8 to 15 parts of triethylene glycol ether. and 2 to 3 parts of water, prepared according to conventional processes, so that it can produce a synergistic effect, ensure good solubility while ensuring high selectivity, reduced non-aromatic hydrocarbon content, fast phase separation speed, and high extraction efficiency; when coal is used Base naphtha is used as raw material, and the composite extractant is used to prepare solvent oil by countercurrent extraction and fractionation in an extraction tower. The novel composite extractant of the present invention is used to extract aromatic hydrocarbons from coal-based naphtha under appropriate process conditions. It is mentioned that compared with petroleum-based naphtha, the solvent oil obtained has higher purity, less aromatic hydrocarbon content, and low toxicity, and the raw material is coal-based naphtha instead of traditional petroleum-based naphtha, which alleviates the pressure on international petroleum resources and broadens the scope of acquisition from non-petroleum resources. Channels for mineral spirits.

The invention discloses a method of extracting glycolic acid from water solution mixture containing the glycolic acid. The method has the following steps: synergistic extraction agent is delivered into an extraction column from the bottom, the water solution mixture containing the glycolic acid is delivered into the extraction column from the top, extraction phase after extraction flows out of the upper part of the extraction column, and raffinate phase after extraction flows out of the lower part of the extraction column; the extraction phase flowing out of the upper part of the extraction column is delivered into a back-extraction column from the bottom; back-extraction water is delivered into the back-extraction column from the top of the back-extraction column; back-extraction water phase which flows out of the lower part of the back-extraction column is concentrated to obtain the glycolic acid; back-extraction organic phase flows out of the upper part of the back-extraction column. The method has the advantages that the technological process is simpler, the capacity of the organic phase is large, the production capacity of equipment is high, the extractant regeneration is convenient, the energy consumption during the process is small, and the manufacturing cost is low; the volatility of the extractant is small without toxicity, the emulsification is hard, the misphasing speed is high, and the separative efficiency is high; the operation is convenient and stable, and the product quality is high.