GB1134881A - The removal of nitrous gases from gas mixtures - Google Patents
The removal of nitrous gases from gas mixturesInfo
- Publication number
- GB1134881A GB1134881A GB47784/65A GB4778465A GB1134881A GB 1134881 A GB1134881 A GB 1134881A GB 47784/65 A GB47784/65 A GB 47784/65A GB 4778465 A GB4778465 A GB 4778465A GB 1134881 A GB1134881 A GB 1134881A
- Authority
- GB
- United Kingdom
- Prior art keywords
- soln
- gases
- removal
- hso
- stage
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
1,134,881. Removal of nitrous gases. SINCATSOC. INDUSTRIALE CATANESE S.p.A. 10 Nov., 1965 [11 Nov., 1964], No. 47784/65. Heading C1A. Nitrous gases are removed from a gaseous mixture by reacting it with a soln. containing sulphite and/or bisulphite ions which are oxidized by the gases to sulphate and/or bisulphate ions. Ammonium, sodium, magnesium and potassium sulphites and bisulphites may be used. The soln. may be saturated but preferably has a concn. of 0À1-10% by wt. calculated as SO 2 . The pH of the soln. may be at least 6, and preferably 6.4 to 6.9. The washing may be carried out in absorption towers packed with Raschig rings in one or more stages. The gases may be washed with a relatively weak soln. in a 1st stage, such as will oxidize all the SO 3 = or HSO 3 -, and then in a 2nd or last stage with relatively conc. soln. which may be obtained from recycled partly oxidized soln. from the same or an earlier stage. Fresh (NH 4 ) 2 SO 3 and/or NH 4 .HSO 3 soln. may be those obtained by the removal of SO 2 from the tail gases of H 2 SO 4 synthesis. The solns. of (NH 4 ) 2 SO 4 and NH 4 HSO 4 may be fed to the synthesis of (NH 4 ) 2 SO 4 by the reaction of NH 4 and H 2 SO 4 , where they are concentrated by the heat of reaction.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2417264 | 1964-11-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1134881A true GB1134881A (en) | 1968-11-27 |
Family
ID=11212356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB47784/65A Expired GB1134881A (en) | 1964-11-11 | 1965-11-10 | The removal of nitrous gases from gas mixtures |
Country Status (7)
| Country | Link |
|---|---|
| DE (1) | DE1280219B (en) |
| DK (1) | DK114336B (en) |
| FR (1) | FR1454723A (en) |
| GB (1) | GB1134881A (en) |
| IL (1) | IL24580A (en) |
| NO (1) | NO120676B (en) |
| SE (1) | SE332619B (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5214709B2 (en) * | 1971-11-29 | 1977-04-23 | ||
| JPS4949289B2 (en) * | 1972-09-12 | 1974-12-26 | ||
| JPS49126569A (en) * | 1973-04-10 | 1974-12-04 | ||
| JPS49127866A (en) * | 1973-04-12 | 1974-12-06 | ||
| GB1446973A (en) * | 1973-09-24 | 1976-08-18 | Asahi Chemical Ind | Method of removing nitrogen monoxide from a nitrogen mono xide-containing gas |
| GB1482643A (en) * | 1973-10-31 | 1977-08-10 | Kureha Chemical Ind Co Ltd | Method for removing oxides of nitrogen from a gas |
| JPS5096478A (en) * | 1973-12-27 | 1975-07-31 | ||
| GB1501702A (en) * | 1974-01-21 | 1978-02-22 | Kureha Chemical Ind Co Ltd | Method of removing nitrogen oxides from a gas containing them |
| JPS5213788B2 (en) * | 1974-05-02 | 1977-04-16 | ||
| GB1505169A (en) * | 1974-11-02 | 1978-03-30 | Fuji Kasui Eng Co Ltd | Process for removing nitrogen oxides from waste gas |
| JPS5157686A (en) * | 1974-11-15 | 1976-05-20 | Osaka Soda Co Ltd | |
| US4044101A (en) * | 1974-12-21 | 1977-08-23 | Asahi Kasei Kogyo Kabushiki Kaisha | Method of treating exhaust gases containing nitrogen oxides and sulfurous acid gas |
| JPS5248942B2 (en) * | 1975-01-06 | 1977-12-13 | ||
| JPS51149891A (en) * | 1975-06-19 | 1976-12-23 | Matsushita Electric Ind Co Ltd | Composition for purifying gas |
| FR2643286B1 (en) * | 1989-02-23 | 1991-05-24 | Lab Sa | PROCESS FOR THE PURIFICATION OF FUMES CONTAINING NITROGEN OXIDES |
-
1965
- 1965-11-05 IL IL24580A patent/IL24580A/en unknown
- 1965-11-05 NO NO160360A patent/NO120676B/no unknown
- 1965-11-09 DE DES100415A patent/DE1280219B/en not_active Withdrawn
- 1965-11-10 SE SE14512/65D patent/SE332619B/xx unknown
- 1965-11-10 DK DK578265AA patent/DK114336B/en unknown
- 1965-11-10 GB GB47784/65A patent/GB1134881A/en not_active Expired
- 1965-11-10 FR FR38039A patent/FR1454723A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NO120676B (en) | 1970-11-23 |
| SE332619B (en) | 1971-02-15 |
| DK114336B (en) | 1969-06-23 |
| IL24580A (en) | 1969-11-30 |
| DE1280219B (en) | 1968-10-17 |
| FR1454723A (en) | 1966-02-11 |
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