Zhejiang Quhua Fluor-chemistry Co Ltd

Zhejiang Quzhou Juxin Fluorine Chemical Co., Ltd.

Shining 3d Tech Co., Ltd.

Ningbo Exciton Technology Co., Ltd.

State Grid Zhejiang Electric Power Company Limited

Institute of Flexible Electronics Technology of Thu, Zhejiang

Zhejiang Engineering Design Co., Ltd.

Ningbo Jiangbei Exciton New Material Technology Co., Ltd.

Marketing Service Center of State Grid Zhejiang Electric Power Co., Ltd

Zhejiang Geely Holding Group Co., Ltd

Ningbo Upper Middle and Lower Automatic Transmission Co., Ltd

Yan Zhang

Bo Yang

Yang Zhao

Jiangyong Hong

Hao Ouyang

Huadong Zhou

Aiguo Wang

Jun Lei

Haitao Gong

Gang Li

Yi Zhu

Min Fang

Haijiang Tang

Xiaojun Chen

Xiaozhe Lin

Huimei Yu

Gang Su

Guojun Yu

Lun Li

Huan Liu

Liang Ma

Yadong Jin

Hao Pan

Bin Wu

Sheng Ye

Wenqi He

Qiang Zhou

Xiaohui Xu

Suying Hou

Iiyang Zhou

Xinguo Tang

Jiaji Xu

Jianfu Jiang

Honghong Su

Linhui Li

Yawen Ren

Weihao Qiu

Jinping Fu

Ziying Ma

Guoan Liu

Haili Xia

Haojin Shi

Zhipeng Liu

Huadong Qiu

Ruoyun Hu

Yongjia Zhou

Gang Sun

Qi Ding

Qingjuan Wang

Lanlan Guo

Yanghao Ou

Yongjiu Mao

Yuanming Ma

Bixin Wu

Jiangyoung Hong

The present invention provides a method for the co-production of 1,1-difluoroethane and vinyl chloride, including: (a) vaporizing dichloroethane and hydrogen fluoride, and delivering the vaporized dichloroethane and hydrogen fluoride into a reactor for a catalytic reaction under the action of a catalyst to obtain a reaction product; (b) delivering the reaction product into a first rectifying tower for separation to obtain an overhead product from the first rectifying tower and a bottom product from the first rectifying tower; (c) delivering the overhead product from the first rectifying tower into a second rectifying tower for separation to obtain hydrogen chloride and a bottom product from the second rectifying tower; (d) delivering the bottom product from the second rectifying tower into a purifying tower for purification to obtain an overhead product from the purifying tower; (e) simultaneously delivering the overhead product from the purifying tower and a saturated organic solvent into a third rectifying tower for separation to obtain a 1,1-difluoroethane product and a bottom product from the third rectifying tower; and (f) delivering the bottom product from the third rectifying tower into a fourth rectifying tower for separation to obtain a vinyl chloride product and a bottom stream from the fourth rectifying tower. The present invention has the advantages of simple process, high conversion rate, and good product quality.

Method for co-production of 1,1-difluoroethane and vinyl chloride

Provided is a preheating thermometer, including a temperature measuring assembly, and a preheating assembly disposed on the temperature measuring assembly. The preheating assembly includes a heating material layer and a sealing film covering the heating material layer to isolate the heating material layer from air. When the preheating thermometer is used for body temperature measurement, the sealing film is removed to allow the heating material layer to produce heat due to the contact of the heating material layer with the air.

Preheated thermometer

The present disclosure provides a method for co-production of hydrofluorocarbons, which includes the steps of: preheating a mixture of chlorinated olefin and hydrogen fluoride; transferring the mixture to the top of a reactor; simultaneously introducing 1,1,1,2,3,3-hexafluoropropene and dichloromethane to the middle of the reactor for reaction; dividing the reactor into three to six sections; filling each section with a catalyst; obtaining reaction products at an outlet of the reactor; and separating the reaction products to obtain various hydrofluorocarbon products, respectively. The present disclosure has the advantages of a high yield, an optimal selectivity and a low energy consumption.

Method for co-production of hydrofluorocarbons

A core data-based storage method for radial multidimensional documents according to an embodiment includes classifying first documents with same document type information into a preset folder to obtain a classified folder; acquiring the total number of levels of document level information of all non-core documents; and displaying preset target images at core display positions and/or non-core display positions, and setting a corresponding storage link path for each of the displayed preset target images. The documents may be stored by classification and displayed visually.

Core data-based storage method for radial multidimensional documents

Three dimensional scanner

A hydrofluoroolefins-containing refrigerant composition is disclosed. The composition includes the following ingredients in part by weight: 50-90 parts of 2,3,3,3-tetrafluoropropene, 5-30 parts of trans-1,3,3,3-tetrafluoropropene, and 5-20 parts of fluoroethane. The composition of this invention has the advantages of low GWP, environmental friendliness, good refrigeration effect and high compatibility with lubricants.

Hydrofluoroolefins-containing refrigerant composition

Disclosed is a method for co-producing 2,3,3,3-tetrafluoropropene and trans-1,3,3,3-tetrafluoropropene, comprising the following steps: preheating a mixture of 1,1,1,2,2-pentachloropropane and 1,1,1,3,3-pentachloropropane together with anhydrous hydrogen fluoride and simultaneously introducing into a first reactor to react in the presence of a catalyst LaO&#x2014;CrOto obtain a first reactor product; directly introducing the first reactor product into a second reactor without separation, and carrying out a catalytic fluorination reaction in the presence of a catalyst GaO&#x2014;YO&#x2014;CrOto obtain a second reactor product; and separating the second reactor product to obtain the products of 2,3,3,3-tetrafluoropropene and trans-1,3,3,3-tetrafluoropropene. The invention has such advantages that the process is simple and less equipment investment is required; used catalysts have good activity, high selectivity and long total life; and the ratio of the two products can be flexibly adjusted according to market demands.

Method for co-producing 2,3,3,3-tetrafluoropropene and trans-1,3,3,3-tetrafluoropropene

Three-dimensional scanner

Provided is an azeotropic and azeotrope-like composition, comprising (E)-1,1,1,4,4,4-hexafluoro-2-butene, (E)-1-chloro-,3,3,3-trifluoropropene and 1,1,1,2,3,3-hexafluoropropane. The azeotropic and azeotrope-like composition has the advantages of low GWP, low thermal conductivity and low energy consumption.

Azeotropic and azeotrope-like composition

The invention discloses a method for co-operating low-carbon foaming agents, comprising: preheating 1,1,1,3,3-pentachloropropane and hydrogen fluoride and then introducing into a reactor to have a reaction in the presence of a catalyst to obtain a reaction product, and separating and purifying to obtain the following low-carbon foaming agent products: trans-1,3,3,3-tetrafluoropropene, cis-1,3,3,3-tetrafluoropropene, 1,1,1,3,3-pentafluoropropane, trans-1-chloro-3,3,3-trifluoropropene, cis-1-chloro-3,3,3-trifluoropropene. The invention has the advantages of simple process, environmental friendliness, high production efficiency and low cost.

Method for co-producing low-carbon foaming agents

Disclosed is a method for co-producing various alkenyl halides and hydrofluoroalkanes: cis-1-chloro-3,3,3-trifluoropropene is introduced into a first reactor to carry out an isomerization reaction in the presence of a first catalyst, and the reaction product is rectified to obtain a product trans-1-chloro-3,3,3-trifluoropropene; and 30-70 wt % of trans-1-chloro-3,3,3-trifluoropropene and hydrogen fluoride are mixed and then introduced into a second reactor to carry out a reaction in the presence of a second catalyst to obtain a second reactor reaction product; the second reactor reaction product is introduced into a phase separator for separation, and the obtained organic phase is rectified to obtain the products trans-1,3,3,3-tetrafluoropropene, cis-1,3,3,3-tetrafluoropropene and 1,1,1,3,3-pentafluoropropane. The invention has the advantages of simple process, high efficiency, high operation flexibility, less investment and low energy consumption.

Method for co-producing various alkenyl halides and hydrofluoroalkanes

A low-carbon environmentally-friendly foamer composition is disclosed. The composition includes the following ingredients in mass percentage: 60-98.99% of 1-chloro-3,3,3-trifluoropropene, 1-39.9% of 1,1,1,2,3-pentafluoropropane and 0.01-1% of 1,2,2,3-tetrafluoropropane. The GWP value of the low-carbon environmentally-friendly foamer composition is smaller than the GWP value of a single-medium HFC-245fa. This low-carbon environmentally-friendly foamer composition has the features of environmental protection, excellent foaming performance and little modification of foaming devices, and can reduce the heat conductivity coefficient and overall energy consumption level. Therefore, the low-carbon environmentally-friendly foamer composition is the best choice for high-performance hard insulating foam, and is an ideal choice of future foamer.

Low-carbon environmentally-friendly foamer composition

This invention discloses a method for co-production of 1-chloro-3,3,3-trifluoropropene, 2,3,3,3-tetrafluoropropene and 1,3,3,3-tetrafluoropropene. This method includes inputting the mixed gases of hydrogen fluoride and 1,1,1,3,3-pentachloropropane together with 1,1,2,3-tetrachloropropene into a first reactor for a reaction to obtain a reaction product; directly inputting the reaction product into a second reactor to perform a reaction in the presence of a catalyst; separating hydrogen chloride from the obtained product; obtaining 1-chloro-3,3,3-trifluoropropene, 2,3,3,3-tetrafluoropropene and 1,3,3,3-tetrafluoropropene respectively after water washing, alkaline washing, drying and rectifying. This invention has the advantages of flexible production, simple process, small investment, low energy consumption and high conversion rate.

Method for co-production of 1-chloro-3,3,3-trifluoropropene, 2,3,3,3-tetrafluoropropene and 1,3,3,3-tetrafluoropropene

The fluorescent film includes a transparent base layer and an adhesive layer bonded to the one surface of the transparent base layer, and a fluorescent powder uniformly dispersed in an adhesive of the adhesive layer.

Adhesive fluorescent films having prismatic layer

A method for preparing 2,3,3,3-tetrafluoropropene and 1,3,3,3-tetrafluoropropene, including: providing a first reactor including a first section, a second section, and a third section, with each section being filled with different catalysts, preheating hexafluoropropylene and hydrogen, and introducing the hexafluoropropylene and the hydrogen to the first reactor to yield a first mixture including:

Method for preparing 2,3,3,3-tetrafluoropropene and 1,3,3,3-tetrafluoropropene

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Zhejiang, China

Yan Zhang