US4277452A
Expired / Lapsed
US
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Carbon monoxide absorbing liquid
Assignee: Hitachi Ltd
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Filing: 1980-01-08
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Granted: 1981-07-07
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Expires: 2000-01-08
Abstract
Abstract The present disclosure is directed to a carbon monoxide absorbing liquid containing a cuprous ion, hydrochloric acid and titanum trichloride. Titanium trichloride is effective in increasing the carbon monoxide absorption quantity. Furthermore, titanium trichloride remarkably increases the oxygen resistance. Therefore, this absorbing liquid can be used continuously and for a long time.
Inventors
- 👤 Keiichi Kanehori
- 👤 Shinkichi Horigome
- 👤 Masayuki Katsumoto
- 👤 Yoshijiro Arikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:45
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/62; Y; Y02; Y02A; Y02A50/00; Y02A50/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
50 words
A carbon monoxide absorbing liquid which comprises a material containing cuprous ion in a concetration of about 0.1 to 6 moles/l, hydrochloric acid in a concentration of about 0.5 to 7 moles/l, and titanium trichloride in a concentration of at least about 1/10 of the concentration of the cuprous ion.
Claim 2
Dependent Claim
50 words
A carbon monoxide absorbing liquid which comprises a material containing cuprous ion in a concetration of about 0.1 to 6 moles/l, hydrochloric acid in a concentration of about 0.5 to 7 moles/l, and titanium trichloride in a concentration of at least about 1/10 of the concentration of the cuprous ion.
Claim 3
Dependent Claim
18 words
The carbon monoxide absorbing liquid as set forth in claim 1 which further contains an alkali metal chloride.
Claim 4
Dependent Claim
19 words
The carbon monoxide absorbing liquid as set forth in claim 2 wherein the alkali metal chloride is lithium chloride.
Claim 5
Dependent Claim
24 words
The carbon monoxide absorbing liquid as set forth in claim 3 wherein the concentration of lithium chloride is about 0.2 to about 12 moles/l.
Claim 6
Dependent Claim
16 words
The carbon monoxide absorbing liquid as set forth in claim 3 or 4 which is acidic.
Claim 7
Independent Claim
74 words
A method of removing carbon monoxide from a gaseous mixture containing carbon monoxide in a concentration of at least about 5% by volume which comprises treating said gaseous mixture with an absorbing liquid containing cuprous ions in a concentration of about 0.1 to 6 moles/l, hydrochloric acid in a concentration of about 0.5 to 7 moles/l, and titanium trichloride in a concentration of at least about 1/10 of the concentration of the cuprous ions.
Claim 8
Independent Claim
74 words
A method of removing carbon monoxide from a gaseous mixture containing carbon monoxide in a concentration of at least about 5% by volume which comprises treating said gaseous mixture with an absorbing liquid containing cuprous ions in a concentration of about 0.1 to 6 moles/l, hydrochloric acid in a concentration of about 0.5 to 7 moles/l, and titanium trichloride in a concentration of at least about 1/10 of the concentration of the cuprous ions.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-07-06 | 1985-01-05 | 1985-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-06 | 1989-01-05 | 1989-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-06 | 1993-01-05 | 1993-07-07 | $7700.00 | Window Closed / Lapsed |