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INTEGRATED PROCESS FOR MAKING HCFO-1233zd AND HFC-245fa

A technology of hfc-245fa and catalyst, which is applied in the integrated field of preparing HCFO-1233zd and HFC-245fa, can solve problems such as not being easy to recycle, and treatment costs affecting the economic feasibility of commercial processes, so as to improve commercial feasibility and eliminate economic loss effect

Inactive Publication Date: 2018-01-02
HONEYWELL INT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since these by-products are not simple HCFO-1233zd precursors, they cannot be easily recycled in the process
The amount of these by-products and the cost of their disposal can significantly affect the economic viability of this commercial process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 30,000 lbs of a mixture of isomers of HCFC-241, isomers of HCFC-242, isomers of HCFC-243 and cis isomers of HCFO-1233zd are fed to the production of HFC-245fa from HCC-240fa commercial reactor. The reaction was run at a temperature of 215°F and a pressure of 150 psig. The reaction product is continuously withdrawn. HFC-245fa meeting all product specifications was produced from the mixture.

Embodiment 2

[0023] In a laboratory setup, a small amount of a mixture of HCFC-241 isomers, HCFC-242 isomers, HCFC-243 isomers and HCFO-1233zd cis isomers was mixed with HF and fluorinated Antimony pentachloride catalyst mix. SbCl was charged first by stirring at room temperature with about 180 RPM 5 and HF to react. The HCl produced by the fluorination of the catalyst is drained into a wash bottle containing KOH solution. The reactor was then heated to 95°C, while the organics feed cylinder was also heated to about 95°C. When this temperature is reached, quickly charge with organics.

[0024] For each experiment it was observed that the temperature first dropped by about 10°C-12°C and then heated to 112°C-118°C. After this, the reaction cooled back to about 95°C within a few minutes. The pressure was raised to 700-800 psig for each reaction. After all the reactions had run for about 1-2 minutes, the pressure stopped rising. The reaction was maintained at final temperature for an ad...

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PUM

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Abstract

A process is described wherein otherwise unusable by-products from a process for the manufacture of trans HCFO-1233zd(E) are converted to a valuable product by introducing them into a process for theproduction of HFC-245fa. The process includes the catalytic hydrofluorination of a reaction mixture comprising the HCFO-1233zd production by-products.

Description

[0001] Cross References to Related Applications [0002] This application claims domestic priority to commonly owned co-pending US Provisional Application Serial No. 62 / 160,026, filed May 12, 2015, the disclosure of which is hereby incorporated by reference. Background technique [0003] US Patent No. 9,045,386 describes a process for the production of high purity trans-1-chloro-3,3,3-trifluoropropene (HCFO-1233zd(E)) on a commercial scale. This patent is hereby incorporated by reference. [0004] It has been found that certain by-products can be produced during the production process of HCFO-1233zd(E), including HCFC-241 isomers, HCFC-242 isomers, HCFC-243 isomers, HCFC-244 isomers and the cis isomer of HCFO-1233zd. These by-products were produced at a ratio of 0.25-35 kg / kg of the trans isomer of HCFO-1233zd. Since these by-products are not simple HCFO-1233zd precursors, they cannot be easily recycled in the process. The amount of these by-products and the cost of their ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C17/20C07C17/21C07C19/08C07C19/10
CPCC07C17/206C07C19/08C07C17/208C07C17/21Y02P20/10
Inventor S.A.科特雷尔G.赛里Y.赵J.W.麦莱内
Owner HONEYWELL INT INC
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