2results about How to "Fast oxidation" patented technology

The invention discloses a method for refining cobalt nickel hydroxide and separating nickel and cobalt, and belongs to the technical field of metal production or refining. The method comprises the following steps: adding water into cobalt nickel hydroxide for wetting, introducing oxygen or ozone for oxidizing and slurrying, and performing ultrasonic enhancement to obtain cobalt nickel hydroxide slurrying liquid; adding dilute sulphuric acid for selective leaching; carrying out vanadium precipitation and iron removal on the leach liquor subjected to selective leaching; a phosphoric acid extraction agent, an alkyl hydroxime extraction agent and an organic diluent are compounded to form a synergistic extraction system, saponification is carried out, and the saponified synergistic extraction system is used for carrying out nickel and cobalt dynamic extraction separation on the leaching solution obtained after vanadium precipitation and iron removal. According to the method, the cobalt extraction speed of a synergistic extraction agent system is higher than that of nickel, cobalt is extracted preferentially, then nickel extraction is conducted on cobalt extraction raffinate, nickel and cobalt are directly extracted into an organic phase, and nickel and cobalt products are obtained through separation and purification. Efficient extraction of nickel and cobalt and effective separation of nickel and cobalt from iron, scandium, manganese and the like can be achieved, and the extraction pH is reduced.

The application discloses a kind of catalysts for oxygen-reduced air drive oil recovery and its preparation method and application, it belongs to oil recovery technical field, comprising the following steps: S1, molybdenum disulfide is dispersed in deionized water, and molybdenum disulfide dispersion is obtained;S2, soluble transition metal salt solution is mixed with molybdenum disulfide dispersion, and two-component catalyst is obtained;S3, two-component catalyst is post-treated, and the catalyst for oxygen-reduced air drive oil recovery is obtained.The oxygen-reduced air drive oil recovery catalyst prepared by the application has good low-temperature reaction performance, fast oxidation speed, can speed up the process of low-temperature oxidation stage, and can also reduce the risk of oxygen penetration into the reservoir, which is beneficial to reduce the construction risk.Compared with traditional catalysts, the asphaltene content of the catalyst after oxidation is lower, which can not only improve the quality of oil products, but also improve the flow performance and oil recovery efficiency of oil products.