GB1301621A - - Google Patents
Info
- Publication number
- GB1301621A GB1301621A GB61671A GB61671A GB1301621A GB 1301621 A GB1301621 A GB 1301621A GB 61671 A GB61671 A GB 61671A GB 61671 A GB61671 A GB 61671A GB 1301621 A GB1301621 A GB 1301621A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- tetraacetic acid
- gases
- concentration
- alkali metal
- 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.)
- Expired
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
- C01B17/48—Sulfur dioxide; Sulfurous acid
- C01B17/50—Preparation of sulfur dioxide
- C01B17/60—Isolation of sulfur dioxide from gases
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Treating Waste Gases (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
Abstract
1301621 Removing S02 from gases SUMI. TOMO CHEMICAL CO Ltd 6 Jan 1971 [22 Sept 1970] 616/71. Heading C1A SO 2 is removed from gases by contact with an aqueous alkali metal or ammonium sulphite solution containing a chelating agent selected from ethylene diamine tetraacetic acid, nitrilotriacetic acid, 1,2-diaminocyclohexane tetraacetic acid, N-oxyethylenediamine triacetic acid, ethylene glycol bis-(#-aminoethylether) tetraacetic acid, ethylenediamine tetrapropionic acid, their alkali metal and ammonium salts and mixtures thereof. The solution may contain a mixture of normal and bi-sulphites of Na, K, or NH 4 , in a concentration of 20-65% by wt. The concentration of the chelating agent may be 50-2000 p.p.m. The process may be carried out at room temperature to 110‹ C.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP45083172A JPS4940357B1 (en) | 1970-09-22 | 1970-09-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1301621A true GB1301621A (en) | 1973-01-04 |
Family
ID=13794843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB61671A Expired GB1301621A (en) | 1970-09-22 | 1971-01-06 |
Country Status (15)
| Country | Link |
|---|---|
| JP (1) | JPS4940357B1 (en) |
| AT (1) | AT300848B (en) |
| BE (1) | BE761355A (en) |
| BR (1) | BR7100135D0 (en) |
| CA (1) | CA969739A (en) |
| CH (1) | CH547230A (en) |
| DE (1) | DE2100268C3 (en) |
| ES (1) | ES387077A1 (en) |
| FR (1) | FR2105753A5 (en) |
| GB (1) | GB1301621A (en) |
| IE (1) | IE34845B1 (en) |
| NL (1) | NL7100047A (en) |
| NO (1) | NO130723C (en) |
| SE (1) | SE373297B (en) |
| ZA (1) | ZA708739B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4789530A (en) * | 1987-12-09 | 1988-12-06 | Phillips Petroleum Company | Absorption of hydrogen sulfide with an alkali metal ethylenediaminetetraacetate and/or alkali metal nitrilotriacetate |
| DE3925424A1 (en) * | 1989-08-01 | 1991-02-07 | Basf Ag | METHOD FOR REDUCING THE OXIDATION SPEED OF SULPHATE SOLUTIONS |
-
1970
- 1970-09-22 JP JP45083172A patent/JPS4940357B1/ja active Pending
- 1970-12-30 ZA ZA708739A patent/ZA708739B/en unknown
- 1970-12-30 IE IE1646/70A patent/IE34845B1/en unknown
-
1971
- 1971-01-04 NO NO712A patent/NO130723C/no unknown
- 1971-01-04 CA CA101,918A patent/CA969739A/en not_active Expired
- 1971-01-05 NL NL7100047A patent/NL7100047A/xx unknown
- 1971-01-05 DE DE2100268A patent/DE2100268C3/en not_active Expired
- 1971-01-06 GB GB61671A patent/GB1301621A/en not_active Expired
- 1971-01-07 ES ES387077A patent/ES387077A1/en not_active Expired
- 1971-01-08 AT AT10571A patent/AT300848B/en not_active IP Right Cessation
- 1971-01-08 SE SE7100165A patent/SE373297B/en unknown
- 1971-01-08 BE BE761355A patent/BE761355A/en unknown
- 1971-01-08 FR FR7100538A patent/FR2105753A5/fr not_active Expired
- 1971-01-08 CH CH28071A patent/CH547230A/en not_active IP Right Cessation
- 1971-11-08 BR BR135/71*[A patent/BR7100135D0/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE2100268A1 (en) | 1972-03-23 |
| NL7100047A (en) | 1972-03-24 |
| DE2100268C3 (en) | 1974-11-14 |
| NO130723C (en) | 1975-01-29 |
| BR7100135D0 (en) | 1973-05-03 |
| FR2105753A5 (en) | 1972-04-28 |
| AT300848B (en) | 1972-08-10 |
| BE761355A (en) | 1971-07-08 |
| CA969739A (en) | 1975-06-24 |
| CH547230A (en) | 1974-03-29 |
| ES387077A1 (en) | 1979-05-01 |
| IE34845L (en) | 1972-03-22 |
| JPS4940357B1 (en) | 1974-11-01 |
| NO130723B (en) | 1974-10-21 |
| DE2100268B2 (en) | 1974-02-28 |
| IE34845B1 (en) | 1975-09-03 |
| ZA708739B (en) | 1971-10-27 |
| SE373297B (en) | 1975-02-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |