GB670028A - Improvements in and relating to the removal of nitric oxide-hydrogen cyanide and sulphide from coal distillation gases - Google Patents
Improvements in and relating to the removal of nitric oxide-hydrogen cyanide and sulphide from coal distillation gasesInfo
- Publication number
- GB670028A GB670028A GB8472/49A GB847249A GB670028A GB 670028 A GB670028 A GB 670028A GB 8472/49 A GB8472/49 A GB 8472/49A GB 847249 A GB847249 A GB 847249A GB 670028 A GB670028 A GB 670028A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gas
- pipe
- purifiers
- purifier
- oxide
- 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
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/20—Purifying combustible gases containing carbon monoxide by treating with solids; Regenerating spent purifying masses
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Industrial Gases (AREA)
Abstract
670,028. Purifying coal gas. HAMBURGER GASWERKE GES. March 29, 1949 [Nov. 8, 1948], No. 8472/49. Class 55 (ii). Hydrogen cyanide, gum - forming nitric oxide and hydrogen sulphide are removed from coal gas which has been freed from tar but which still contains ammonia, by first removing the HCN and NO in a preliminary purifier in which is a mass containing iron oxide which has been sulphided by the H 2 S and rendered alkaline by the ammonia in the gas, and then removing the H 2 S in one or more subsequent iron oxide purifiers. The apparatus shown consists of three purifiers I, II and III, each having an insulated vertical, cylindrical shell containing superimposed, removable containers 8, 9 and 10 through which passes an axial gas inlet pipe 7. Gas flows through the three purifiers in series, entering the first through a pipe 1 to flow upwardly past a heating or cooling coil 5, up through the pipe 7 and downwardly through the purifying mass in each container, discharging through a pipe 13 into a vessel 15 where it is heated to between 30‹ and 40‹ C. and saturated by steam admitted through a pipe 15a, before entering purifier II. Air for the revivification in situ of the material in purifier II is also admitted through pipe 15a. Initially, all the purifiers are charged with iron oxide. The mass in purifier I is rapidly sulphided and rendered alkaline and in this condition absorbs the HCN and NO from the gas with evolution of H 2 S which, with the H 2 S present in the gas, is removed in purifiers II and III by the normal reaction. Two distinct spent masses result from the process, first, a normal spent oxide from II and III and second, a mass containing ferrocyanide from purifier I. To overcome the decrease in gas permeability which would otherwise occur, the fresh oxide is briquetted before loading it into the containers. For the HCN and NO removal, a particularly suitable mass is produced by melting crystalline ferrous sulphate solidifying, and exposing it to the gas, when it is converted into a lumpy mass containing ferrous oxide. U.S.A. Specification 1,976,704 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE670028X | 1948-11-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB670028A true GB670028A (en) | 1952-04-09 |
Family
ID=6590303
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8472/49A Expired GB670028A (en) | 1948-11-08 | 1949-03-29 | Improvements in and relating to the removal of nitric oxide-hydrogen cyanide and sulphide from coal distillation gases |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB670028A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2837398A (en) * | 1952-08-08 | 1958-06-03 | Grosskinsky Otto | Process of removing hydrocyanic acid, hydrogen sulfide and ammonia from gases |
-
1949
- 1949-03-29 GB GB8472/49A patent/GB670028A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2837398A (en) * | 1952-08-08 | 1958-06-03 | Grosskinsky Otto | Process of removing hydrocyanic acid, hydrogen sulfide and ammonia from gases |
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