Hydrogen sulfide mixture, method for producing same, and filling container

Patent metadata

Field	Value
Publication number	US-11312625-B2
Application number	US-201716311404-A
Country	US
Kind code	B2
Filing date	May 17, 2017
Priority date	Jun 22, 2016
Publication date	Apr 26, 2022
Grant date	Apr 26, 2022

Abstract

To provide a hydrogen sulfide mixture hardly corroding metals. The hydrogen sulfide mixture contains hydrogen sulfide and water. The hydrogen sulfide mixture is filled into a filling container so that at least one part of the hydrogen sulfide mixture is liquid and the moisture concentration of a gaseous phase is 0.001 mol ppm or more and less than 75 mol ppm.

First claim

The invention claimed is:

1. A hydrogen sulfide mixture contained in a filling container, the hydrogen sulfide mixture consisting of:
hydrogen sulfide; and
water,
wherein at least one part of the hydrogen sulfide mixture is present as a liquid phase and a water concentration of the liquid phase is 0.01 mol ppm or more and less than 0.75 mol ppm.

2. A method for producing the hydrogen sulfide mixture contained in a filling container according to claim 1 , the hydrogen sulfide mixture consisting of hydrogen sulfide and water, the method comprising:
a dehydration step of bringing a hydrogen sulfide mixture having a water concentration of 15 mol ppm or more into contact with a moisture adsorbent to reduce the water concentration to less than 10 mol ppm; and
a filling step of filling the hydrogen sulfide mixture obtained in the dehydration step into a filling container so that at least one part of the hydrogen sulfide mixture is liquid and the water concentration of a liquid phase in completion of the filling is 0.01 mol ppm or more and less than 15 mol ppm.

3. The method for producing the hydrogen sulfide mixture according to claim 2 ,
wherein at least one part of the filling container is formed of stainless steel.

4. The method for producing a hydrogen sulfide mixture according to claim 3 ,
wherein a ratio V/Gi of an internal volume V (unit: L) of the filling container to a filling amount G 1 (unit: kg) of the hydrogen sulfide mixture into the filling container in the filling step is 1.47 or more and 37.0 or less.

5. The method for producing the hydrogen sulfide mixture according to claim 2 ,
wherein a ratio V/G 1 of an internal volume V (unit: L) of the filling container to a filling amount G 1 (unit: kg) of the hydrogen sulfide mixture into the filling container in the filling step is 1.47 or more and 37.0 or less.

Assignees

• Showa Denko Kk

Inventors

• Tanimoto Yosuke
• Hoshino Yasuyuki

Classifications

• F17C1/00

  Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge (pressurised apparatus for purposes other than storage, see the relevant subclasses such as A62C, B05B; associated with vehicles, see the appropriate subclass of classes B60 - B64; pressure vessels in general F16J12/00 {; autoclaves B01J3/04; tank vehicles B60P3/22; railway tank wagons for carrying fluent materials B61D5/00; accumulators for supplying fluid under pressure F15B1/04; liquefied gas stoves F24C3/00}) · CPC title

• F17C2203/0643

  Stainless steels · CPC title

• C01B17/16 Primary

  Hydrogen sulfides · CPC title

• F17C5/06

  for filling with compressed gases · CPC title

• F17C2221/037

  Containing pollutant, e.g. H2S, Cl · CPC title