GB1481066A - Process for regenerating catalysts for oxidation of sulphur dioxide - Google Patents
Process for regenerating catalysts for oxidation of sulphur dioxideInfo
- Publication number
- GB1481066A GB1481066A GB38043/74A GB3804374A GB1481066A GB 1481066 A GB1481066 A GB 1481066A GB 38043/74 A GB38043/74 A GB 38043/74A GB 3804374 A GB3804374 A GB 3804374A GB 1481066 A GB1481066 A GB 1481066A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solution
- regenerated
- oxidation
- sept
- source
- 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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8603—Removing sulfur compounds
- B01D53/8609—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/28—Regeneration or reactivation
- B01J27/30—Regeneration or reactivation of catalysts comprising compounds of sulfur, selenium or tellurium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/12—Oxidising
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/584—Recycling of catalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Catalysts (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Treating Waste Gases (AREA)
Abstract
1481066 Removing S02 from gases; sulphates NIPPON OIL CO Ltd 30 Aug 1974 [3 Sept 1973 14 Sept 1973 5 Oct 1973] 38043/74 Heading C1A In a process for oxidizing SO 2 by contact with O 2 in presence of an aqueous solution containing at least 3 p.p.m. each of V<SP>5+</SP> and Mn<SP>2+</SP>, the catalyst is regenerated by withdrawing from the oxidation reaction at least 0À5% of the solution, adjusting its pH to 2-7 by adding Ca, Ba or Sr oxide, hydroxide and/or carbonate to precipitate the corresponding sulphate, adding H 2 O 2 or a source thereof or a gas containing O 2 <SP>-</SP> in an amount to oxidize to V<SP>5+</SP> at least 40% of the V<SP>4+</SP> in the withdrawn solution, which V<SP>4+</SP> has been formed by reduction during oxidation of SO 2 , separating the sulphate and recycling the regenerated aqueous solution to the oxidation reaction. Re Ca, Ba or Sr compound and oxidizing agent may be added together, or in either order. The source of H 2 O 2 may be a substance capable of generating H 2 O 2 upon addition to H 2 O or aqueous acid, e.g. per-compounds. Before recycle, the regenerated solution may be treated with V- and iron-containing soot to make up V and Mn adsorbed on the precipitated sulphates. The catalytic solution may also contain at least 3 p.p.m. Fe<SP>+++</SP>. In examples, SO 2 is removed from fine gas.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9821873A JPS5614333B2 (en) | 1973-09-03 | 1973-09-03 | |
| JP10324273A JPS577777B2 (en) | 1973-09-14 | 1973-09-14 | |
| JP48111538A JPS5753286B2 (en) | 1973-10-05 | 1973-10-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1481066A true GB1481066A (en) | 1977-07-27 |
Family
ID=27308611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB38043/74A Expired GB1481066A (en) | 1973-09-03 | 1974-08-30 | Process for regenerating catalysts for oxidation of sulphur dioxide |
Country Status (9)
| Country | Link |
|---|---|
| BE (1) | BE819413A (en) |
| CA (1) | CA1047474A (en) |
| DE (1) | DE2442018C3 (en) |
| FR (1) | FR2242329B1 (en) |
| GB (1) | GB1481066A (en) |
| IT (1) | IT1020365B (en) |
| NL (1) | NL7411684A (en) |
| SE (1) | SE405962B (en) |
| SU (1) | SU633464A3 (en) |
-
1974
- 1974-08-30 IT IT26823/74A patent/IT1020365B/en active
- 1974-08-30 BE BE148100A patent/BE819413A/en unknown
- 1974-08-30 GB GB38043/74A patent/GB1481066A/en not_active Expired
- 1974-09-02 SE SE7411081A patent/SE405962B/en unknown
- 1974-09-02 SU SU742060744A patent/SU633464A3/en active
- 1974-09-03 DE DE2442018A patent/DE2442018C3/en not_active Expired
- 1974-09-03 NL NL7411684A patent/NL7411684A/en not_active Application Discontinuation
- 1974-09-03 FR FR7429900A patent/FR2242329B1/fr not_active Expired
- 1974-09-13 CA CA209,157A patent/CA1047474A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2442018B2 (en) | 1978-11-30 |
| DE2442018A1 (en) | 1975-08-14 |
| DE2442018C3 (en) | 1979-08-02 |
| SE7411081L (en) | 1975-03-04 |
| SE405962B (en) | 1979-01-15 |
| BE819413A (en) | 1974-12-16 |
| FR2242329B1 (en) | 1976-10-22 |
| SU633464A3 (en) | 1978-11-15 |
| NL7411684A (en) | 1975-03-05 |
| CA1047474A (en) | 1979-01-30 |
| FR2242329A1 (en) | 1975-03-28 |
| IT1020365B (en) | 1977-12-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3097925A (en) | Method of recovering sulphur | |
| GB1510275A (en) | Removal of sulphur oxides from waste gas | |
| US5700440A (en) | Selective oxidation of hydrogen sulfide in the presence of iron-based catalysts | |
| CA2072161C (en) | Process for removing sulfur dioxide and nitrogen oxides from flue gases | |
| ES411067A1 (en) | Process for purifying metallurgical gases containing sulphurous anhydride by extracting mercury | |
| GB1412055A (en) | Method for desulphurizing a waste gas | |
| US4043939A (en) | Reactivation of catalysts useful for nitrogen oxide removal | |
| GB1384095A (en) | Process for decreasing the total sulphur content of claus off-gases | |
| ES421346A1 (en) | Method of removing sulfur dioxide from a dust containing exhaust gas stream | |
| US3981971A (en) | Process for reducing nitrogen oxides | |
| GB1504688A (en) | Mitigating or preventing environmental pollution by sulphur oxides in the treatment of sulphur-containing substance | |
| GB1492068A (en) | Method for removing sulphur dioxide from an exhaust gas | |
| GB1481066A (en) | Process for regenerating catalysts for oxidation of sulphur dioxide | |
| GB1398126A (en) | Demetalation of a hydrocarbon charge stock | |
| GB1155637A (en) | Method of Operating a Hydrofining Process | |
| US5670123A (en) | Process for the extraction of hydrogen sulphide from a gas mixture | |
| US3950492A (en) | Process for removal of ammonia, hydrogen sulfide and hydrogen cyanide from gases containing these substances | |
| GB1514726A (en) | Method of treating an exhaust gas | |
| GB1488659A (en) | Gas and non-polar liquid purification | |
| GB1200470A (en) | Oxidation of soluble sulfide compounds | |
| GB1413521A (en) | Processes for purifying gases containing hydrogen cyanide | |
| US4434146A (en) | Scrubbing of hydrogen sulphide using pH control to control thiosulfate formation | |
| US3549321A (en) | Removal of iron from solution | |
| US4434145A (en) | Simultaneous scrubbing and oxidation of hydrogen sulfide using excess vanadate | |
| IE39808B1 (en) | A process for purifying fumes and gases and for producing sulphuric acid from the sulphuretted compounds extracted from the said fumes and from the said gases |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |