5results about How to "Reasonable process" patented technology

The invention relates to the technical field of battery disassembly and recovery, and provides a continuous high-efficiency energy-saving power battery crushing and recovery integrated process, integrated equipment is adopted, and the integrated equipment sequentially comprises a nitrogen generation module, a crushing module, a drying module, an integrated cooling module and a tail gas treatment module, and the energy consumption is further reduced while the safety is ensured.

This invention discloses a product separation and purification apparatus and method for the production of dimethyl carbonate (DMC) via CO esterification. It includes a pre-separation tower, a DMC separation tower, a wastewater DMC recovery tower, a circulating gas separation tower, a DMM removal tower, an MF distillation tower, a DMM distillation tower, a pressurized DMC distillation tower, and an atmospheric pressure DMC distillation tower. The feed line for the DMC synthesis product is connected to the inlet of the pre-separation tower; the bottom outlet of the pre-separation tower is connected to the inlet of the wastewater DMC recovery tower; the side outlet of the pre-separation tower is connected to the inlet of the DMC separation tower; the top outlets of the pre-separation tower and the top outlet of the DMC separation tower are respectively connected to the inlet of the circulating gas separation tower; the bottom of the circulating gas separation tower is connected to the DMM removal inlet; and the bottom of the DMM removal tower is connected to the feed inlet of the pressurized DMC distillation tower. This invention can be used for the separation and purification of dimethyl carbonate (DMC) product streams, and features a rational process and low energy consumption.

The invention discloses a preparation process of vegetable insulating oil with high oxidation stability, and belongs to the technical field of vegetable oil refining. The core of the process is as follows: firstly, taking palladium and nickel salts in a specific molar ratio as precursors, and combining with polyethylene glycol to prepare a palladium-nickel bimetallic catalyst loaded on alkaline carclazyte; then, vegetable oil is mixed with the catalyst and activated carbon, and hydrogen is introduced under mild vacuum and heating conditions for selective hydrogenation refining; and finally, adding an antioxidant and a pour point depressant into the refined oil to obtain a final product. Through the synergistic effect of the catalyst, extremely unstable linolenic acid in hydrogenated oil can be efficiently and selectively hydrogenated, by means of an integrated process and blending, the oxidation stability is remarkably improved, meanwhile, the excellent low-temperature fluidity of the product is kept, the refining yield is high, the process is simple and convenient, and the method is suitable for large-scale production of the environment-friendly high-performance vegetable insulating oil.

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.