Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Process for producing trifluoroiodomethane

A technology for trifluoroiodomethane and trifluoroacetyl, which is applied in the gas phase field for producing trifluoroiodomethane, and can solve problems such as reduced process efficiency

Pending Publication Date: 2021-04-30
HONEYWELL INT INC
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Additional steps required for separation and handling can make the process less efficient

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Process for producing trifluoroiodomethane
  • Process for producing trifluoroiodomethane
  • Process for producing trifluoroiodomethane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0054] Preparation of trifluoroiodomethane according to Equation 1

[0055] In this example, the production of iodotrifluoromethane from hydrogen iodide and trifluoroacetyl chloride according to Equation 1 as described above is demonstrated. In nine series of experiments, equimolar amounts of trifluoroacetyl chloride and anhydrous hydrogen iodide were passed through a preheater and heated to a temperature of about 100°C. The heated reactants were then passed through a stainless steel tube 3 / 8 inch (9.5 mm) in diameter and 6 inches (152 mm) in length. Depending on the experiment, the tubes were heated to a temperature ranging from 350°C to 380°C, and were purged with nitrogen for at least one hour before each experiment to remove any water. For each experiment, the tubes contained one of several catalysts. Contact times range from 12 seconds to 30 seconds. All vented vapors from each experiment were collected in sample bags for GC and GC-MS analysis. The results are shown...

Embodiment 2

[0064] Embodiment 2: the separation of trifluoroiodomethane

[0065] In this example, the isolation of trifluoroiodomethane is demonstrated. A mixture comprising 85% by weight iodotrifluoromethane, 10% by weight trifluoroacetyl iodide and 5% by weight carbon monoxide may be fed to the distillation column. The distillation column may include a 10 gallon reboiler, 2 inch ID 10 ft. column and about 30 theoretical plates. Distillation columns can be equipped with temperature, absolute and differential pressure transmitters. The distillation may be run at a pressure of about 275 KPa and the condenser at a temperature of about -13°C to collect the trifluoroiodomethane.

[0066] aspect

[0067] Aspect 1 is for producing trifluoroiodomethane (CF 3 I) The gas phase process comprising providing a reactant stream comprising hydrogen iodide and a trifluoroacetyl halide selected from the group consisting of trifluoroacetyl chloride, trifluoroacetyl fluoride, trifluoroacetyl bromi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Lengthaaaaaaaaaa
Surface areaaaaaaaaaaa
Average pore sizeaaaaaaaaaa
Login to View More

Abstract

The present disclosure provides a gas-phase process for producing trifluoroiodomethane, the process comprising providing a reactant stream comprising hydrogen iodide and trifluoroacetyl halide selected from the group consisting of trifluoroacetyl chloride, trifluoroacetyl fluoride, trifluoroacetyl bromide, and combinations thereof, and reacting the reactant stream in the presence of a catalyst at a temperature from about 200 DEG C to about 600 DEG C to produce a product stream comprising the trifluoroiodomethane.

Description

technical field [0001] The present disclosure relates to the production of trifluoroiodomethane (CF 3 I) method. In particular, the present disclosure relates to gas phase processes for the production of trifluoroiodomethane. Background technique [0002] Trifluoroiodomethane (CF 3 I) Also known as perfluoromethyl iodide, trifluoromethyl iodide or iodotrifluoromethane, are compounds that are used in commercial applications as, for example, refrigerants or fire extinguishing agents. Trifluoroiodomethane is a low global warming potential molecule with almost no ozone depletion potential. Trifluoroiodomethane can replace substances that are more harmful to the environment. [0003] Methods for the preparation of trifluoroiodomethane are known. For example, U.S. Patent No. 7,196,236 (Mukhopadhyay et al.) discloses the use of 3 R (wherein R is selected from: -COOH, -COX, -CHO, -COOR 2 and—SO 2 X, where R 2 is an alkyl group, and X is chlorine, bromine or iodine) reactant...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C07C17/093C07C17/20C07C17/10C07C17/42C07C19/16B01J21/18
CPCC07C17/383C07C17/363C07C19/16C07C17/093C07C17/206C07C17/10C07C17/42B01J21/18C07C17/087
Inventor 哈里达桑·K·奈尔拉吉夫·巴纳瓦利拉吉夫·拉特纳·辛格
Owner HONEYWELL INT INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com