Halogen generator

Patent metadata

Field	Value
Publication number	US-11072528-B2
Application number	US-201916390617-A
Country	US
Kind code	B2
Filing date	Apr 22, 2019
Priority date	Apr 22, 2019
Publication date	Jul 27, 2021
Grant date	Jul 27, 2021

Abstract

Disclosed herein are embodiments of a method and system for producing a halogen gas. The method may comprise contacting a solid oxidizing agent with a vapor comprising a halide compound, to produce a gas stream comprising a halogen corresponding to the halide in the halide compound. The halide compound may be an acyl halide, such as an acetyl halide or an oxalyl halide. The oxidizing agent may be any suitable oxidizing agent, and in certain examples, potassium permanganate is used. The method may be performed under a reduced pressure. Also disclosed herein is a system suitable to perform the disclosed method. The system may comprise a reservoir, an oxidizing agent support and a gas stream outlet.

First claim

I claim:

1. A method, comprising contacting a solid oxidizing agent with a gaseous acyl halide compound to produce a gas stream comprising a halogen gas, wherein the contacting step is at a pressure of from 1 Torr to 650 Torr.

2. The method of claim 1 , wherein the gaseous acyl halide compound is an acetyl halide, oxalyl halide, or a combination thereof.

3. The method of claim 1 , wherein the gaseous acyl halide compound is acetyl chloride or acetyl bromide.

4. The method of claim 1 , wherein the gaseous acyl halide compound is oxalyl chloride or oxalyl bromide.

5. The method of claim 1 , wherein the halogen gas is chlorine.

6. The method of claim 1 , wherein the halogen gas is bromine.

7. The method of claim 1 , wherein the oxidizing agent comprises a permanganate, dichromate, hypochlorite, hypobromite, chlorate, bromate, chlorite, bromite, perchlorate, perbromate, chlorochromate, perborate, bismuthate, nitrate, chromate, trioxide, tetroxide, or a combination thereof.

8. The method of claim 1 , wherein the oxidizing agent comprises lithium, calcium, barium, sodium, potassium, magnesium, chromium, osmium, ruthenium, or a combination thereof.

9. The method of claim 1 , wherein the oxidizing agent comprises potassium permanganate, potassium chromate, chromium trioxide, sodium chromate, sodium dichromate, potassium dichromate, potassium chlorochormate, sodium bismuthate, potassium nitrate, sodium perborate, sodium hypochlorite, sodium chlorite, sodium chlorate, sodium perchlorate, sodium hypobromite, sodium bromite, sodium bromate, sodium perbromate, osmium tetroxide, ruthenium tetroxide, or a combination thereof.

10. The method of claim 1 , wherein the pressure is from 50 Torr to 300 Torr.

11. The method of claim 1 , wherein the pressure is from 100 Torr to 250 Torr.

12. The method of claim 1 , wherein the gaseous acyl halide compound is at a temperature of from −200° C. to 50° C.

13. The method of claim 12 , wherein the temperature is from −80° C. to 30° C.

14. The method of claim 12 , wherein the temperature is from 0° C. to 25° C.

15. The method of claim 12 , comprising contacting the solid oxidizing agent with the gaseous acyl halide compound at a vapor pressure of the gaseous acyl halide compound at the temperature.

16. The method of claim 1 , wherein the gaseous acyl halide compound comprises acetyl halide, and the gas stream further comprises acetic anhydride.

17. The method of claim 1 , comprising contacting potassium permanganate with acetyl chloride vapor at 600 Torr and from 20° C. to 30° C. to produce a gas stream comprising chlorine gas.

18. The method of claim 1 , comprising contacting potassium permanganate with acetyl bromide vapor at 130 Torr and from 20° C. to 30° C. to produce a gas stream comprising bromine gas.

19. The method of claim 1 , further comprising using the gas stream in an ion beam apparatus.

20. The method of claim 1 , comprising contacting a solid oxidizing agent selected from potassium permanganate, potassium chromate, chromium trioxide, sodium chromate, sodium dichromate, potassium dichromate, potassium chlorochormate, sodium bismuthate, potassium nitrate, sodium perborate, sodium hypochlorite, sodium chlorite, sodium chlorate, sodium perchlorate, sodium hypobromite, sodium bromite, sodium bromate, sodium perbromate, osmium tetroxide, ruthenium tetroxide, or a combination thereof, with a vapor comprising an acyl chloride or an acyl bromide, wherein the acyl chloride or acyl bromide is at a temperature of from −200° C. to 50° C., and the method is performed at a vapor pressure of the acyl chloride or acyl bromide at the temperature.

Assignees

• Fei Co

Inventors

• Chandler Clive

Classifications

• B01J7/00

  Apparatus for generating gases (production of inert gas mixtures B01J19/14; for generating specific gases, see the relevant subclasses, e.g. C01B, C10J {; in "air bags" on vehicles B60R21/26; for starter gas F02C7/26; blasting cartridges for producing gas under pressure F42B3/04}) · CPC title

• C01B7/096 Primary

  Bromine · CPC title

• C01B7/03 Primary

  Preparation from chlorides · CPC title

• B01J15/00

  Chemical processes in general for reacting gaseous media with non-particulate solids, e.g. sheet material; Apparatus specially adapted therefor (B01J19/08 takes precedence) · CPC title