GB523645A - Improvements in recovery of sulphur dioxide - Google Patents
Improvements in recovery of sulphur dioxideInfo
- Publication number
- GB523645A GB523645A GB2144/39A GB214439A GB523645A GB 523645 A GB523645 A GB 523645A GB 2144/39 A GB2144/39 A GB 2144/39A GB 214439 A GB214439 A GB 214439A GB 523645 A GB523645 A GB 523645A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulphur dioxide
- liberation
- borate
- absorbed
- boric acid
- 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
- C01B17/48—Sulfur dioxide; Sulfurous acid
- C01B17/50—Preparation of sulfur dioxide
- C01B17/60—Isolation of sulfur dioxide from gases
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Gas Separation By Absorption (AREA)
Abstract
523,645. Recovery of sulphur-dloxide. BACON, R. F. Jan. 21, 1939, No. 2144. Convention date, Jan. 21, 1938. [Class 1 (ii)] Relates to processes for recovering sulphur dioxide from mixtures with other gases, in which the sulphur dioxide is absorbed in an aqueous absorbing medium, and the latter is heated to expel the sulphur dioxide. According to the invention, the aqueous medium contains a borate as an absorbent of sulphur dioxide. Further, the process may involve the use of a boric acid in conjunction with a borate or with an absorption agent other than a borate, e.g. a sulphite to aid in the liberation of the absorbed sulphur dioxide by heating. Preferably sodium, potassium or ammonium tetraborates and magnesium metaborate are employed for the absorption, and orthoboric acid for aiding in the liberation of the sulphur dioxide. The borate may or may not be in saturated solution, or it may be in excess of the amount required for saturation. Liberation of the sulphur dioxide is most effectively performed when the absorbing medium is saturated with free boric acid at boiling temperature. The temperature of absorption may be anywhere between the freezing point of the solution and 75‹C., and for liberation of the absorbed sulphur dioxide the solution may be heated to a temperature from 85‹C. to the boiling point. Usually the working temperatures are 70-75‹C. and about 85‹C. respectively. Tables are given showing results obtained with varying concentrations of reagents (borax and other borates and sulphites with or without free boric acid in each case), under various working conditions. Apparatus particularly suitable for carrying out the invention is described in Specification 523,646, [Group XII].
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US523645XA | 1938-01-21 | 1938-01-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB523645A true GB523645A (en) | 1940-07-18 |
Family
ID=21977136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2144/39A Expired GB523645A (en) | 1938-01-21 | 1939-01-21 | Improvements in recovery of sulphur dioxide |
Country Status (2)
| Country | Link |
|---|---|
| CY (1) | CY58A (en) |
| GB (1) | GB523645A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102327737A (en) * | 2011-06-22 | 2012-01-25 | 华北电力大学（保定） | Synergistic agent for flue gas desulfurization process adopting wet limestone-gypsum method and application thereof |
-
1939
- 1939-01-21 GB GB2144/39A patent/GB523645A/en not_active Expired
-
1941
- 1941-05-09 CY CY5841A patent/CY58A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102327737A (en) * | 2011-06-22 | 2012-01-25 | 华北电力大学（保定） | Synergistic agent for flue gas desulfurization process adopting wet limestone-gypsum method and application thereof |
| CN102327737B (en) * | 2011-06-22 | 2013-10-16 | 华北电力大学（保定） | Synergistic agent for flue gas desulfurization process adopting wet limestone-gypsum method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CY58A (en) | 1941-05-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB523645A (en) | Improvements in recovery of sulphur dioxide | |
| GB798856A (en) | Process for separating and recovering carbon dioxide from gaseous mixtures | |
| US1888391A (en) | Process of preparing boric acid | |
| GB791150A (en) | Process for separating and recovering carbon dioxide from gaseous mixtures | |
| GB780683A (en) | Improvements relating to the recovery of waste gases in the synthesis of urea from ammonia and carbon dioxide | |
| Buncel et al. | The deuteroxide-catalyzed hydrogen exchange of dimethyl sulphoxide. Preparation of diperdeuteromethyl sulphoxide,(CD 3) 2 SO | |
| GB861416A (en) | Production of boric acid | |
| US1417369A (en) | Process for the preparation of guanidine | |
| GB919401A (en) | Process of concentration of solutes | |
| GB426380A (en) | Improvements in fertilisers | |
| GB867574A (en) | Improvements in or relating to processes for removing one gas from a mixture of gases | |
| GB1033169A (en) | Auramine process using sulfamic acid | |
| GB994383A (en) | Process for the preparation of deuterium-enriched amines | |
| GB730212A (en) | Improvements in or relating to weed-killers | |
| GB893290A (en) | Improvements in and relating to coolants showing a reduced tendency to corrode metals | |
| GB1001881A (en) | Process for modifying calcium carbonate | |
| GB1043789A (en) | Method of removing carbon dioxide from gaseous mixtures | |
| Topley et al. | 210. Isotope exchange between hydrogen bromide and bromine | |
| ES234492A3 (en) | A method for eliminating carbon dioxide and hydrogen sulfide from a gas mixture (Machine-translation by Google Translate, not legally binding) | |
| GB606456A (en) | Improvements in the production of sodium bicarbonate and ammonium chloride | |
| GB755783A (en) | Improvements in or relating to acid pickling compositions and methods of pickling | |
| GB831532A (en) | Improvements in or relating to a process for eliminating carbon dioxide contained ingases | |
| GB446373A (en) | Process for the production of the borates of zinc, tin or copper | |
| GB220899A (en) | Improvements in application of adsorbent materials | |
| GB383873A (en) | Process for rendering ammonium nitrate non-hygroscopic and non-deliquescent |