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HFO-1234ze and HCFO-1233zd co-production process and co-production system

A technology of z-hcfo-1233zd and z-hfo-1234ze, applied in the field of fluorine-containing organic compounds, can solve the problems of reduced investment cost of equipment, no simultaneous preparation, low component content, etc., and achieves reduced operating cost and high selectivity , the effect of high production efficiency

Active Publication Date: 2021-10-22
陕西中蓝化工科技新材料有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the intermediate products of this process include HFO-1234ze and HCFO-1233zd, due to the low content of some components and the difficulty of separation, the co-production products are trans-HFO-1234ze and HFC-245fa, and E-HFO- The co-production of 1234ze, Z-HFO-1234ze, E-HCFO-1233zd and Z-HCFO-1233zd four products, while E-HFO-1234ze, Z-HFO-1234ze, E-HCFO-1233zd and Z-HCFO-1233zd The market prospect is very broad
[0009] At present, in industrial production, HCFO-1233zd(E / Z) and HCFO-1234ze(E / Z) required for production are produced by two or three sets of independent devices, and E-HFO-1234ze is not prepared at the same time , Z-HFO-1234ze, E-HCFO-1233zd and Z-HCFO-1233zd four products co-production process, and co-production will greatly reduce the investment cost of the device

Method used

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  • HFO-1234ze and HCFO-1233zd co-production process and co-production system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Example 1: Partially Fluorinated α-Al 2 o 3 preparation of

[0070] Weigh 204.3 grams of aluminum isopropoxide and place it in a polytetrafluoroethylene beaker, add 1L of ethylene glycol solvent, and use magnetic stirring to disperse it evenly; add nitric acid solution dropwise to the solution until the pH of the solution is 2, and continue stirring; The solution was slowly heated to 80°C and maintained at this temperature until the solution gradually became viscous; then the gel-like material was transferred into a stainless steel pan and dried in an oven at 120°C. The dried material is programmed from room temperature to 650°C at a heating rate of 3°C / min in a box furnace, and kept at 650°C for 3 hours, and then programmed at 3°C / min to 1200°C, and kept at 1200°C for firing 3 hours, the carrier α-Al was obtained 2 o 3 , specific surface area 15.53m 2 / g, the average pore diameter is 24.2nm, and more than 88% of the pore diameter is 15-35nm. α-Al 2 o 3 At 320°C...

Embodiment 2

[0071] Example 2: Partially fluorinated θ-Al containing 2 o 3 and α-Al 2 o 3 Preparation of mixed crystal phase alumina

[0072] Add aluminum isopropoxide to ethylene glycol to prepare a solution with an aluminum content of 1.0 mol / L, then treat at 150°C for 24 hours, centrifuge, wash the sample obtained by centrifugation with absolute ethanol, and store in air at 50°C Dry for 12 hours to obtain a powder, and bake the above powder in an air atmosphere at 1200°C for 3 hours to obtain a powder containing θ-Al 2 o 3 and α-Al 2 o 3 Crystalline alumina with a specific surface area of ​​15.3m 2 / g, the average pore diameter is 23.3nm, and more than 92% of the pore diameter is 15-35nm, among which, α-Al 2 o 3 The content is 85%, θ-Al 2 o 3 The content is 15%.

[0073] will contain θ-Al 2 o 3 and α-Al 2 o 3 Mixed crystal phase alumina at 350°C, HF / N 2 (HF:N 2 =1:3) under the atmosphere for 45 minutes to obtain partially fluorinated θ-Al 2 o 3 and α-Al 2 o 3 Alumi...

Embodiment 3

[0074] Embodiment 3: the preparation of the first catalyst

[0075] Weigh the required amount of Cr(NO 3 )3.9H 2 O and NiCl 2 ·6H 2 O (the mass ratio of Cr to Ni is 2:1) is dissolved in a certain amount of water, and partially fluorinated α-Al is added dropwise 2 o 3 immersion at 60°C for 18h and drying at 105°C for 6h to obtain the catalyst precursor 6%Cr-3%Ni / partially fluorinated α-Al 2 o 3 .

[0076] The catalyst precursor was placed in an Incon alloy tubular reactor with an inner diameter of 1 inch and a length of 90 cm, and nitrogen gas was introduced at 100 mL / min, and roasted at 200 ° C for 2 h, then raised to 500 ° C, and roasted for 3 h to obtain the first catalyst . Treat the first catalyst at 200° C. for 60 minutes in an HF atmosphere, and set it aside.

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Abstract

The invention relates to a HFO-1234ze and HCFO-1233zd co-production process and co-production system. By taking HCC-240fa and anhydrous HF as raw materials, four products, namely E-HFO-1234ze, Z-HFO-1234ze, E-HCFO-1233zd and Z-HCFO-1233zd, are co-produced. The process realizes simultaneous production of various high-added-value products, and is simple in process flow, high in production efficiency and low in investment cost.

Description

technical field [0001] The invention relates to fluorine-containing organic compounds, in particular to a co-production process and co-production system of HFO-1234ze and HCFO-1233zd. Background technique [0002] HFC-134a (CF 3 CH 2 F, 1,1,1,2-tetrafluoroethane) is currently the most widely used refrigerant, although its ozone depletion potential (ODP) is zero, but its greenhouse effect potential (GWP) is high and in the atmosphere The long residence time in the middle, a large amount of use will cause global warming. Therefore, the European Union launched the F-gas regulation in 2006, that is, from January 1, 2011, fluorine-containing gases with a GWP greater than 150 are prohibited from being used in automotive air conditioners of new models; 150 fluorine-containing gases are used in all new car air conditioners. [0003] In the process of looking for a substitute for HFC-134a, E-1,3,3,3-tetrafluoropropene (E-HFO-1234ze) (boiling point -18°C) has many physical and che...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C17/25C07C21/18B01J23/86B01J23/89
CPCC07C17/20C07C17/25B01J23/866B01J23/8906C07C19/08C07C21/18
Inventor 杨刚杨会娥许磊齐仲龙赵新堂杨伟晗柴华张迪齐芳
Owner 陕西中蓝化工科技新材料有限公司
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