Corrosive-gas-mixture-filled container and corrosive gas composition

Patent metadata

Field	Value
Publication number	US-12535185-B2
Application number	US-202318839633-A
Country	US
Kind code	B2
Filing date	Mar 15, 2023
Priority date	Mar 31, 2022
Publication date	Jan 27, 2026
Grant date	Jan 27, 2026

Abstract

A corrosive-gas-mixture-filled container includes a sealed container, and a gas filled in the sealed container and containing a corrosive gas. In the corrosive-gas-mixture-filled container, a concentration of water in a vapor phase in the gas is 400 mol ppm or less, the sealed container includes a cylindrical body portion including a metal layer having an inner surface in contact with a corrosive gas mixture, and a maximum height of a surface roughness of the inner surface of the metal layer of the cylindrical body portion is 50 μm or less.

First claim

The invention claimed is:

1 . A corrosive-gas-mixture-filled container comprising:
a sealed container made of a metal; and a corrosive gas mixture that is filled in the sealed container and comprises: a corrosive gas and water in a vapor phase, wherein a concentration of the water in the corrosive gas mixture is 400 mol ppm or less, the sealed container includes a cylindrical body portion, and a maximum height of a surface roughness of an inner surface of the cylindrical body portion is 50 μm or less.

2 . The corrosive-gas-mixture-filled container according to claim 1 ,
wherein the maximum height of the surface roughness of the inner surface of the cylindrical body portion is 6 μm or less.

3 . The corrosive-gas-mixture-filled container according to claim 2 ,
wherein the concentration of the water in the corrosive gas mixture is 110 mol ppm or less.

4 . The corrosive-gas-mixture-filled container according to claim 3 ,
wherein the concentration of the water in the corrosive gas mixture is 10 mol ppm or less.

5 . The corrosive-gas-mixture-filled container according to claim 4 ,
wherein the concentration of the water in the corrosive gas mixture is 1 mol ppm or less.

6 . The corrosive-gas-mixture-filled container according to claim 1 ,
wherein the metal constituting the sealed container includes an alloy steel.

7 . The corrosive-gas-mixture-filled container according to claim 6 ,
wherein the alloy steel is manganese steel or chromium molybdenum steel.

8 . The corrosive-gas-mixture-filled container according to claim 1 ,
wherein the corrosive gas is a sulfur-based gas.

9 . The corrosive-gas-mixture-filled container according to claim 8 ,
wherein the sulfur-based gas is hydrogen sulfide or sulfur dioxide.

10 . The corrosive-gas-mixture-filled container according to claim 9 , wherein the sulfur-based gas is hydrogen sulfide.

11 . The corrosive-gas-mixture-filled container according to claim 9 , wherein the sulfur-based gas is sulfur dioxide.

12 . The corrosive-gas-mixture-filled container according to claim 1 , wherein the corrosive-gas-mixture-filled container consists of:
the sealed container made of the metal; and the corrosive gas mixture that is filled in the sealed container and comprises: the corrosive gas and water in the vapor phase.

13 . The corrosive-gas-mixture-filled container according to claim 1 , wherein the concentration of the water in the corrosive gas mixture is in a range from 0.1 mol ppm to 400 mol ppm.

14 . The corrosive-gas-mixture-filled container according to claim 1 , wherein, as measured by an SEM-EDS analysis, a sulfur concentration in a manganese steel piece having the maximum height of the surface roughness of 1 μm and being stored in the corrosive gas in the corrosive-gas-mixture-filled container at room temperature for 30 days is 15% by mass or less.

15 . The corrosive-gas-mixture-filled container according to claim 1 , wherein an average sulfur concentration along a depth direction of a manganese steel piece having the maximum height of the surface roughness of 40 μm and being stored in the corrosive gas in the corrosive-gas-mixture-filled container at room temperature for 30 days, is 1.40 atomic % or less, when measured by X-ray photoelectron spectroscopy in terms of a SiO 2 thermal oxide film at a depth from 10 to 40 nm from a surface of the manganese steel piece.

16 . A corrosive gas composition obtained by being extracted from the corrosive-gas-mixture-filled container according to claim 1 .

Assignees

• Sumitomo Seika Chemicals

Inventors

• SAKAI Ryoichiro
• Yamauchi Hiroki

Classifications

• F17C2221/037

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

• F17C2203/0648

  Alloys or compositions of metals · CPC title

• F17C2203/0639

  Steels · CPC title

• F17C2201/0104

  cylindrical · CPC title

• F17C1/14 Primary

  constructed of aluminium; constructed of non-magnetic steel · CPC title