GB1331561A - Treatment of gases - Google Patents
Treatment of gasesInfo
- Publication number
- GB1331561A GB1331561A GB1331561DA GB1331561A GB 1331561 A GB1331561 A GB 1331561A GB 1331561D A GB1331561D A GB 1331561DA GB 1331561 A GB1331561 A GB 1331561A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stream
- moo
- catalyst
- bed
- gas
- 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
- C01B17/02—Preparation of sulfur; Purification
- C01B17/04—Preparation of sulfur; Purification from gaseous sulfur compounds including gaseous sulfides
- C01B17/0404—Preparation of sulfur; Purification from gaseous sulfur compounds including gaseous sulfides by processes comprising a dry catalytic conversion of hydrogen sulfide-containing gases, e.g. the Claus process
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
Abstract
1331561 SO 2 removal from gaseous effluents BRITISH GAS CORP 29 Feb 1972 6552/71 Heading C1A SO 2 is removed from an effluent gas stream by passing a major portion of the stream together with H 2 over a first catalyst bed thereby producing a gas stream containing H 2 S, and then passing this stream together with air and the remaining minor portion of the effluent stream over a second catalyst bed thereby converting the SO 2 and some of the H 2 S and into elemental S, condensing the S formed and then passing the resulting H 2 S stream to an H 2 S stripping stage. The first and second catalyst beds may be a catalyst of NiO-MoO 3 , CoO 3 -MoO 3 , uraniathoria, urania-MoO 3 or mixtures thereof on a support. The preferred catalysts are NiO (1-5%)-MoO 3 (3-10%); CoO (1-4%)- MoO 3 (11-16%); MoO 3 (1-20%)-urania (2-15%); the percentages being calc. as the wt. of the metal based on the total wt. of the catalyst. The supports may be active Al 2 O 3 , bauxite, corundum, silica, kaolin, powdered brick, and/or alkaline earth metal oxide. The temp. of the catalyst beds is preferably 300- 350‹ C. The H 2 S stripping step may be carried out by passing the gas stream over ZnO or washing the gas with a soln. of sodium vanadate and the disodium salt of anthraquinone disuiphonic acid. The SO 2 effluent containing, e.g. 10-15% SO 2 , may be that obtained by removal of the S content of fuel oils by means of heating the oil in a fluidized bed of active CaO granules, CaS being formed and the S then removed as SO 2 from the CaS by heating in a second fluidized bed supplied with air, the CaO then being recycled to the first bed. The major stream may contain 75% of the total effluent gas. The remaining 25% is preferably contacted with the H 2 S stream from the first catlyst bed and air in a water condenser prior to being reheated and passed through the second catalyst bed.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB655271 | 1972-02-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1331561A true GB1331561A (en) | 1973-09-26 |
Family
ID=9816588
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1331561D Expired GB1331561A (en) | 1972-02-29 | 1972-02-29 | Treatment of gases |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1331561A (en) |
-
1972
- 1972-02-29 GB GB1331561D patent/GB1331561A/en not_active Expired
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |