2results about How to "Reasonable process" patented technology

This invention relates to the field of 1-butene production technology, specifically to a method and apparatus for the double bond isomerization of 1-butene. The method includes: 1) subjecting a mixed C4 stream to an isomerization reaction to obtain an isomerization reaction product containing 1-butene; 2) separating the isomerization reaction product obtained in step 1) by distillation to obtain a stream comprising a 1-butene product stream and a butadiene-containing liquid stream; 3) selectively hydrogenating the butadiene-containing liquid stream obtained in step 2) in the presence of hydrogen to obtain a selectively hydrogenated reaction product; and 4) recycling the selectively hydrogenated reaction product obtained in step 3) back to step 2) for distillation separation. The method of this invention, which involves selectively hydrogenating the butadiene-containing liquid stream obtained from the distillation separation of the isomerization reaction product, followed by recycling the selectively hydrogenated product back to distillation separation, has a more rational overall process, lower energy and reagent consumption, and ensures stable and controllable product quality.

This invention relates to the field of metallurgical technology, specifically to a method for effectively recovering metallic silicon from industrial silicon slag. The method involves first crushing the silicon slag, adding plasma water for slurry preparation, obtaining a silicon slag slurry, then adding a modifier, inhibitor, trapping agent, and frother to generate bubbles. The slurry is then refined using electromagnetic slag-forming in a medium-frequency induction furnace, and finally poured into a mold for cooling to obtain metallic silicon. The modifier is quicklime powder, the inhibitor and trapping agent are a mixture of various components, the frother is No. 4 flotation oil, the slag-forming agent is a mixture of base materials and auxiliary materials, and the gas is a mixture of argon, chlorine, and other gases. This method can solve the problems of high impurity and complex chemical composition in industrial silicon slag, improving the purity of the recovered metallic silicon.