FR2143898A1 - Hydrogen sulphide extn from bisulphides - by multistage reaction with bicarbonate - Google Patents
Hydrogen sulphide extn from bisulphides - by multistage reaction with bicarbonateInfo
- Publication number
- FR2143898A1 FR2143898A1 FR7223621A FR7223621A FR2143898A1 FR 2143898 A1 FR2143898 A1 FR 2143898A1 FR 7223621 A FR7223621 A FR 7223621A FR 7223621 A FR7223621 A FR 7223621A FR 2143898 A1 FR2143898 A1 FR 2143898A1
- Authority
- FR
- France
- Prior art keywords
- bicarbonate
- bisulphides
- extn
- hydrogen sulphide
- tower
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/16—Hydrogen sulfides
- C01B17/165—Preparation from sulfides, oxysulfides or polysulfides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Treating Waste Gases (AREA)
- Paper (AREA)
Abstract
The alkali-metal bisulphide soln. is passed vertically down a tower contg. a series of floors each coated with alkali-metal bicarbonate, pref. as a crystalline sediment. Normally H2S and CO2 are produced and at equilibrium, the CO2 is in large excess. But evolution of H2S is much faster than CO2, so the dwell time at each stage is made so small that decomposition of bicarbonate to CO2 scarcely occurs, and H2S is pre-dominately produced. Steam is passed up the tower to reduce the partial pressure of H2S. The process is of special use in the paper-pulp industry yielding dry gas contg. 75 vol. % H2S.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI184771A FI45576C (en) | 1971-06-30 | 1971-06-30 | Method for separating concentrated hydrogen sulfide from a sulphide-containing solution a |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2143898A1 true FR2143898A1 (en) | 1973-02-09 |
FR2143898B1 FR2143898B1 (en) | 1974-12-27 |
Family
ID=8506282
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7223621A Granted FR2143898A1 (en) | 1971-06-30 | 1972-06-29 | Hydrogen sulphide extn from bisulphides - by multistage reaction with bicarbonate |
Country Status (7)
Country | Link |
---|---|
AT (1) | AT321950B (en) |
CA (1) | CA962037A (en) |
DE (1) | DE2231755C2 (en) |
FI (1) | FI45576C (en) |
FR (1) | FR2143898A1 (en) |
SE (1) | SE383866B (en) |
SU (1) | SU915794A3 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4698219A (en) * | 1983-10-11 | 1987-10-06 | Lummus Crest, Inc. | Treatment of waste from iron ore reduction |
EP2592186A1 (en) | 2011-11-08 | 2013-05-15 | Södra Cell AB | Kraft pulping process |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA792645A (en) * | 1968-08-20 | Oy Tampella Ab | Method of crystallizing alkali as alkali monohydrate crystals |
-
1971
- 1971-06-30 FI FI184771A patent/FI45576C/en active
-
1972
- 1972-06-28 SE SE845672A patent/SE383866B/en unknown
- 1972-06-29 SU SU721805632A patent/SU915794A3/en active
- 1972-06-29 CA CA145,989A patent/CA962037A/en not_active Expired
- 1972-06-29 FR FR7223621A patent/FR2143898A1/en active Granted
- 1972-06-29 AT AT560472A patent/AT321950B/en not_active IP Right Cessation
- 1972-06-29 DE DE19722231755 patent/DE2231755C2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2231755C2 (en) | 1983-10-27 |
FI45576B (en) | 1972-04-04 |
SE383866B (en) | 1976-04-05 |
AT321950B (en) | 1975-04-25 |
CA962037A (en) | 1975-02-04 |
DE2231755A1 (en) | 1973-03-29 |
SU915794A3 (en) | 1982-03-23 |
FR2143898B1 (en) | 1974-12-27 |
FI45576C (en) | 1972-07-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |