GB1405616A - Manufacture of sulphur trioxide - Google Patents
Manufacture of sulphur trioxideInfo
- Publication number
- GB1405616A GB1405616A GB3763872A GB3763872A GB1405616A GB 1405616 A GB1405616 A GB 1405616A GB 3763872 A GB3763872 A GB 3763872A GB 3763872 A GB3763872 A GB 3763872A GB 1405616 A GB1405616 A GB 1405616A
- Authority
- GB
- United Kingdom
- Prior art keywords
- catalytic oxidation
- heat exchanger
- oxidation
- stage
- mist
- 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
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/74—Preparation
- C01B17/76—Preparation by contact processes
- C01B17/765—Multi-stage SO3-conversion
- C01B17/7655—Multi-stage SO3-conversion with intermediate absorption
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)
- Harvesting Machines For Specific Crops (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
1405616 Catalytic oxidation of S02 to SO3 PECHINEY UGINE KUHLMANN 11 Aug 1972 [13 Aug 1971] 37638/72 Heading C1A A multi stage process for the catalytic oxidation of SO 2 to SO 3 is one in which oxidation product from a catalytic oxidation stage is passed through an absorber, e.g. containing H 2 SO 4 , to remove SO 3 and is thereafter passed to a further catalytic oxidation stage via a heat exchanger which raises the temperature of the gas prior to its introduction into the further oxidation stage, and a hot dry gas which does not interfere with the subsequent oxidation reaction being injected into the gas leaving the absorber so as to vaporize H 2 SO 4 mist which has already formed and to prevent the formation of H 2 SO 4 mist at least up to the inlet of the heat exchanger. This helps to prevent corrosion of the heat exchanger.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7129648A FR2149586A5 (en) | 1971-08-13 | 1971-08-13 | IMPROVEMENT IN THE MANUFACTURING OF SULFURIC ACID |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1405616A true GB1405616A (en) | 1975-09-10 |
Family
ID=9081846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3763872A Expired GB1405616A (en) | 1971-08-13 | 1972-08-11 | Manufacture of sulphur trioxide |
Country Status (11)
| Country | Link |
|---|---|
| JP (1) | JPS4827998A (en) |
| AT (1) | AT325062B (en) |
| BE (1) | BE786720A (en) |
| BR (1) | BR7205489D0 (en) |
| DE (1) | DE2239510C3 (en) |
| ES (1) | ES405469A1 (en) |
| FI (1) | FI55164C (en) |
| FR (1) | FR2149586A5 (en) |
| GB (1) | GB1405616A (en) |
| IT (1) | IT970822B (en) |
| NO (1) | NO136708C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA727754B (en) * | 1972-11-01 | 1974-06-26 | African Explosives & Chem | Improvements in and relating to the manufacture of sulphuric acid |
| JPS50161685A (en) * | 1974-06-19 | 1975-12-27 | ||
| JPS52119706A (en) * | 1975-11-28 | 1977-10-07 | Kerou Majin | Method of and device for cooling underground power cable |
| CN112320768B (en) * | 2021-01-04 | 2021-03-30 | 联仕(昆山)化学材料有限公司 | Production method of electronic-grade sulfuric acid |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL135400C (en) * | 1964-09-25 | |||
| DE1933460C3 (en) * | 1969-07-02 | 1973-11-15 | Metallgesellschaft Ag, 6000 Frankfurt | Device for intermediate absorption and heat exchange during the catalytic conversion of gases containing SO deep 2 with the production of sulfuric acid |
-
1971
- 1971-08-13 FR FR7129648A patent/FR2149586A5/en not_active Expired
-
1972
- 1972-07-26 BE BE786720A patent/BE786720A/en not_active IP Right Cessation
- 1972-07-28 IT IT6947872A patent/IT970822B/en active
- 1972-08-02 FI FI214872A patent/FI55164C/en active
- 1972-08-03 ES ES405469A patent/ES405469A1/en not_active Expired
- 1972-08-09 NO NO283572A patent/NO136708C/en unknown
- 1972-08-11 GB GB3763872A patent/GB1405616A/en not_active Expired
- 1972-08-11 DE DE19722239510 patent/DE2239510C3/en not_active Expired
- 1972-08-11 AT AT696972A patent/AT325062B/en not_active IP Right Cessation
- 1972-08-11 BR BR548972A patent/BR7205489D0/en unknown
- 1972-08-12 JP JP8039572A patent/JPS4827998A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| BR7205489D0 (en) | 1973-06-12 |
| DE2239510C3 (en) | 1981-03-19 |
| FI55164C (en) | 1979-06-11 |
| DE2239510A1 (en) | 1973-02-22 |
| AT325062B (en) | 1975-10-10 |
| BE786720A (en) | 1972-11-16 |
| NO136708C (en) | 1977-10-26 |
| JPS4827998A (en) | 1973-04-13 |
| FI55164B (en) | 1979-02-28 |
| DE2239510B2 (en) | 1980-07-03 |
| IT970822B (en) | 1974-04-20 |
| NO136708B (en) | 1977-07-18 |
| FR2149586A5 (en) | 1973-03-30 |
| ES405469A1 (en) | 1975-09-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |