33results about How to "Wide liquid temperature range" patented technology

The invention discloses the application of ionic liquid which is used as a solvent for separating benzene and cyclohexane by extractive distillation, and relates to the application that the ionic liquid is used as the solvent during the process of separating the benzene and the cyclohexane by extractive distillation. Cationic in the ionic liquid is imidazole cationic, anion in the ionic liquid isfluorophoshoric acid anion or halide anion, and ionic liquid solvent is one ionic liquid or two or more than two compounded ionic liquid; the water content of the ionic liquid is 0 percent to 20 percent, and the addition amount ranges in the molar concentration from 5 percent to 90 percent; light-component cyclohexane with low boiling point is obtained at the top of a rectification column and themixture of the ionic liquid and the benzene is obtained in a column reactor during the separating process; the mixture passes through an evaporator or is performed through steam stripping separation.The extractive distillation technology of the ionic liquid solvent increases the separation precision, and obviously simplifies process flow agents, reduces equipment investment and lowers the separation energy consumption at the same time, thereby getting very remarkable economic benefits.

The wet spinning method of polyacrylonitrile fibre includes the following steps: dissolving fibre-grade polyacrylonitrile resin in the solvent to obtain spinning solution, making the spinning solution the passed through spinneret component to form primary fibre, then making the primary fibre be passed through a coagulating bath and coagulated to form the invented fibre. Said invention also provides the chemical structure formula of said solvent, and the polyacrylonitrile resin content in the spinning solution is 10-35 wt%.

The wet spinning method of pelyacrylonitrile fibre includes the following steps: dissolving fibre-grade polyacrylonitrile resin in the solvent to obtain spinning solution, making the spinning solution be passed through spinneret component to form primary fibre, then making the primary fibre be passed through a coagulating bath and coagulated to form the invented fibre. Said invention also provides the chemical structure formula of said solvent, and the polyacrylonitrile resin content in the spinning solution is 10-35 wt%.

An Electrocatalytic Reduction of CO in a Heteropolyacid Ionic Liquid-Indium Dual Catalyst System 2 Process for the preparation of ethanol acetic acid. The invention belongs to electrocatalytic reduction of CO 2 Preparation of ethanol acetic acid fields. The purpose of the invention is in order to solve existing reduction CO 2 The response is generally 2e ‑ 、4e ‑ transfer reaction, unable to achieve CO 2 deep reduction, and the complex technical problems of the ionic liquid preparation process of the existing reaction system. The present invention prepares polyoxometalate ionic liquid (n-Bu 4 N) 3 SVW 11 o 40 , after dissolving it in acetonitrile as catholyte, using dilute sulfuric acid as anolyte to electrocatalytically reduce carbon dioxide to prepare ≥C 1 The liquid phase products are ethanol and acetic acid. The method of the present invention is simple, effectively solves the problem that the existing multi-acid ionic liquids are rare and in short supply, and the reaction conditions are mild, the economic cost is low, the energy efficiency can be increased to 4 to 5 times, and the obtained ethanol Faradaic efficiency is 7% to 7%. 16%, and the faradaic efficiency of acetic acid is 14% to 67%.