SE304342B - - Google Patents
Info
- Publication number
- SE304342B SE304342B SE812165A SE812165A SE304342B SE 304342 B SE304342 B SE 304342B SE 812165 A SE812165 A SE 812165A SE 812165 A SE812165 A SE 812165A SE 304342 B SE304342 B SE 304342B
- Authority
- SE
- Sweden
- Prior art keywords
- stage
- h2seo3
- h2so4
- content
- gases
- Prior art date
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
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
-
- 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
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/74—Preparation
- C01B17/76—Preparation by contact processes
- C01B17/775—Liquid phase contacting processes or wet catalysis processes
-
- 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
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/90—Separation; Purification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (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)
- Treating Waste Gases (AREA)
Abstract
SO2 is removed from gases by passing them countercurrent to aq. H2SeO3 in at least two stages, the Se formed in the first stage being completely removed from the liquor circulating in this stage, and the SO2 being completely removed from the gases in the second stage. The first stage may be operated discontinuously adding fresh H2SeO3 intermittently, after withdrawing a portion of the exhausted liquor. The Se may be removed from the H2SO4 -containing soln. withdrawn from the first stage and oxidized to H2SeO3 which is used to maintain to H2SeO3 content in the second stage. The product H2SO4 soln. may be concentrated by evaporation e.g. by passing the hot gases to be treated therethrough. The second stage may be operated continuously and the H2SeO3 content may be maintained at above stoichiometric requirements e.g. at 42 g. SeO2/l, and the H2SO4 content may be kept to a minimum e.g. 77 g./l.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEN0025135 | 1964-06-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
SE304342B true SE304342B (en) | 1968-09-23 |
Family
ID=7343312
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE812165A SE304342B (en) | 1964-06-18 | 1965-06-18 |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE665484A (en) |
FR (1) | FR1450590A (en) |
GB (1) | GB1107626A (en) |
SE (1) | SE304342B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
LU85454A1 (en) * | 1984-07-06 | 1985-09-12 | Euratom | METHOD AND DEVICE FOR REMOVING SULFUR DIOXIDE FROM HOT EXHAUST GASES |
US5965095A (en) * | 1997-05-05 | 1999-10-12 | Electric Power Research Inst. | Flue gas humidification and alkaline sorbent injection for improving vapor phase selenium removal efficiency across wet flue gas desulfurization systems |
CN114712979B (en) * | 2021-01-05 | 2023-09-01 | 中冶长天国际工程有限责任公司 | Quick judging SO in flue gas purification process 2 Adsorption efficiency method and system |
-
1965
- 1965-06-11 GB GB2482165A patent/GB1107626A/en not_active Expired
- 1965-06-15 BE BE665484A patent/BE665484A/xx unknown
- 1965-06-15 FR FR20892A patent/FR1450590A/en not_active Expired
- 1965-06-18 SE SE812165A patent/SE304342B/xx unknown
Also Published As
Publication number | Publication date |
---|---|
BE665484A (en) | 1965-10-01 |
GB1107626A (en) | 1968-03-27 |
FR1450590A (en) | 1966-08-26 |
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