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 invention relates to a molten salt heat storage type electric heating central heating system, and belongs to the technical field of heat storage. The molten salt heat storage type electric heating central heating system comprises a molten salt electric heater, a high-temperature hot salt tank, a low-temperature cold salt tank, a molten salt pump, a molten salt-water heat exchanger and a heat user. During the time period of low-price low off-peak electricity at night, the molten salt in the cold salt tank is pumped out through the molten salt pump to be conveyed to the molten salt electric heater for heating, and enters the hot salt tank after being heated up to high temperature. During the time period of a power utilization peak, the high-temperature molten salt, with accumulated heat, in the hot salt tank is pumped put through the molten salt pump to be conveyed to the molten salt-water heat exchanger and heats water used for municipal heating to produce hot water for supplying heat to residents. On the basis of a coal-fired boiler central heating system which is in general use at present, only a boiler room of the central heating system needs to be transformed into the molten salt heat storage type electric heating system, and neither a municipal heat supply pipe network nor heat supply terminal equipment needs to be transformed. Besides, the molten salt heat storage type electric heating central heating system can cut down a peak to supplement a trough and reduce the usage amount of coal, thereby playing a role in protecting the environment.

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%.

The invention discloses a conductive polymer-coated silicon-based negative pole piece and its preparation method and application. The silicon-based negative pole piece is used as a substrate and an ionic liquid is used as a reaction medium to make polymer monomers Electrochemical self-polymerization reaction is carried out between the voids and the surface of the substrate, and a conductive polymer film with controllable thickness is formed on the surface of the substrate to improve the interface performance and cycle stability of the silicon-based negative electrode sheet; then use the electrode sheet as the positive electrode, metal lithium The sheet is the negative electrode, and the external circuit is connected to control the current to carry out electrochemical pre-lithium to improve the first Coulombic efficiency of the matrix, and to prepare a conductive polymer-coated silicon-based negative electrode sheet. In the electrochemical polymerization process, the thickness of the conductive polymer film can be controlled by electricity, no catalyst is needed, and it can be produced on a large scale; and the reaction medium is an ionic liquid, which has almost no vapor pressure and a wide range of liquid temperatures. Compared with other organic / Inorganic solvent, more friendly to the environment, green and pollution-free.

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%.

The invention relates to a method for preparing nano-scale lithium manganese phosphate. The method comprises the following steps of S1, preparing an aluminum mesh based lithium phosphate pole piece; S2, using a manganese sheet as an anode, carrying out electrolysis in imidazole ionic liquid, and introducing a manganese ion into the imidazole ionic liquid, so as to form manganese ion-containing imidazole ionic liquid; S3, using the aluminum mesh based lithium phosphate pole piece as a cathode, carrying out electrodeposition in the manganese ion-containing imidazole ionic liquid, and generating the nano-scale lithium manganese phosphate on the cathode. According to the method, lithium manganese phosphate which can be used for a positive-pole material of a lithium-ion battery is prepared for the first time by utilizing the electrodeposition in the imidazole ionic liquid; the sources of raw materials are simple; the cost is low; the granularity of the made nano-scale lithium manganese phosphate is more uniform. Moreover, the imidazole ionic liquid can be circularly used for multiple times; further, a side reaction is not generated; the preparation process is green and environment-friendly; the technique is simple; the process is easily controlled; the energy consumption is low.

The invention provides a polyalkylcyclopentane lubricating oil composition, and a preparation method and an application thereof, and belongs to the field of liquid lubrication. Guerbet alcohol Guerbetacid ester and tricresyl phosphate are ester compounds and can be well mixed and dissolved to form a composite additive; and the base oil and the Guerbet alcohol Guerbet acid ester have similar longside chain structures, so the polyalkylcyclopentane lubricating oil composition has the advantages of good compatibility, extremely wide liquid temperature range, extremely low volatilization loss, excellent lubricating performance and excellent high and low temperature performances, and can be used for liquid lubrication under harsh conditions such as a micro electro mechanical system and space machinery.