GB722025A - Process and apparatus for the production of hydrogen cyanide - Google Patents
Process and apparatus for the production of hydrogen cyanideInfo
- Publication number
- GB722025A GB722025A GB25254/51A GB2525451A GB722025A GB 722025 A GB722025 A GB 722025A GB 25254/51 A GB25254/51 A GB 25254/51A GB 2525451 A GB2525451 A GB 2525451A GB 722025 A GB722025 A GB 722025A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hydrogen
- methane
- recycled
- nitrogen
- mixture
- 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
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C3/00—Cyanogen; Compounds thereof
- C01C3/02—Preparation, separation or purification of hydrogen cyanide
- C01C3/0208—Preparation in gaseous phase
- C01C3/0229—Preparation in gaseous phase from hydrocarbons and ammonia in the absence of oxygen, e.g. HMA-process
- C01C3/0233—Preparation in gaseous phase from hydrocarbons and ammonia in the absence of oxygen, e.g. HMA-process making use of fluidised beds, e.g. the Shawinigan-process
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
Abstract
<PICT:0722025/III/1> <PICT:0722025/III/2> <PICT:0722025/III/3> <PICT:0722025/III/4> In a process for the production of hydrogen cyanide by reacting ammonia with gaseous hydrocarbons such as methane, preferably in the presence of catalysts the hydrogen formed is employed in the production of methane and/or ammonia which products are recycled to the hydrogen cyanide production step. The ammonia may be synthesized from the hydrogen and elementary nitrogen whilst the methane may be prepared by means of the hydrogen from carbon monoxide or dioxide, or by hydrogenation of crude oil, petrol, coal, tar or carbon compounds, the hydrogenation producing products containing more than 2 carbon atoms which are separated, and methane-containing residual gases, which are recycled. In the figures, A indicates the hydrogen cyanide production, B, the methane synthesis, C the ammonia synthesis. In Fig. 1, recycled hydrogen and nitrogen are fed to C and part of the ammonia produced, together with added methane are fed to A. The hydrogen cyanide product is separated from the hydrogen which is recycled. If desired the necessary nitrogen may be added with the methane and recycled with the hydrogen to C, or another alternative (Fig. 3), part of the hydrogen produced is re-cycled and a part burned with air or an oxygen /nitrogen mixture to supply heat to the endothermic hydrogen cyanide reaction. The gases resulting from the combustion, after separation of the water formed are recycled to C to provide the necessary nitrogen, any surplus being withdrawn for use elsewhere. As shown in Fig. 6, a furnace gas containing carbon monoxide, hydrogen and nitrogen together with a recycled hydrogen/nitrogen mixture is fed to a methane synthesis B, after withdrawal of carbon dioxide the methane/nitrogen mixture is fed to A together with ammonia synthesized at C from the nitrogen/hydrogen mixture separated from the product. Further circuits illustrate the employment of the recycled hydrogen to hydrogenate a hydrocarbon mixture to produce hydrogenation products, which are separated, and methane which is fed to the hydrogen cyanide productions. Instead of methane, propylene, ethylene, butylene or acetylene may be employed. In such a case, employing propylene, only 3/4 of the hydrogen produced need be recycled to the ammonia synthesis, the remainder being withdrawn. In Figure 8 a calcium cynamide circuit is shown; ammonia synthesized at C and methane synthesized at B are fed to a reactor A. The hydrogen cyanide/hydrogen mixture is reacted at E with lime to produce calcium cyanamide which is recovered and a carbon monoxide/hydrogen mixture, the hydrogen component being in part separated and fed to C, whilst the remainder of the mixture passes to the methane synthesis at B, carbon dioxide product being removed before the methane formed is recycled. The methane synthesis may be carried out at 150-300 DEG C. preferably employing a catalyst containing aluminium, manganese and nickel, preferably prepared by decomposition of nitrates, formates or acetates. A silica gel carrier may be used. The hydrogen cyanide synthesis is carried out at 850-1350 DEG C. preferably in elongated reaction chambers such as tubes, the surfaces thereof consisting or containing catalysts which may be Ru, Rh, Pt, Os, Ir, Pd, Cu or alloys thereof with each other or with Au, Ag, Re, Nb, Ta, W, Mo or V, or oxides of Be, Al, Sc, Y, La, Mg, with or without the above metals. The catalysts may be employed as gauze or foils which may be electrically heated, or preferably as a coating deposited from a solution or dispersion on the inside or outside of heat-resistant metal tubes, reaction heat being supplied from the side not coated. A plurality of superposed coatings may be used. For example a sillimanite or corundum tube of 20-80 mm. diameter may be treated with a solution of a platinum metal in a mixture of concentrated nitric and hydrochloric acids, and the solvent evaporated while the tubes are rotated. After heating, if desired with a non-oxidizing gas, the catalyst coatings are p formed. The catalyst tubes may be placed in a heating chamber, either horizontally or vertically and are preferably fitted with lead-in pipes to direct the reaction gases to the hotter parts of the tube.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH722025X | 1950-10-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB722025A true GB722025A (en) | 1955-01-19 |
Family
ID=4531620
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB25254/51A Expired GB722025A (en) | 1950-10-30 | 1951-10-29 | Process and apparatus for the production of hydrogen cyanide |
Country Status (2)
Country | Link |
---|---|
BE (1) | BE506771A (en) |
GB (1) | GB722025A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3647388A (en) * | 1970-05-04 | 1972-03-07 | Du Pont | Process for the manufacture of hydrogen cyanide |
WO2021063799A1 (en) * | 2019-10-01 | 2021-04-08 | Haldor Topsøe A/S | Cyanide on demand |
US11905173B2 (en) | 2018-05-31 | 2024-02-20 | Haldor Topsøe A/S | Steam reforming heated by resistance heating |
-
0
- BE BE506771D patent/BE506771A/xx unknown
-
1951
- 1951-10-29 GB GB25254/51A patent/GB722025A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3647388A (en) * | 1970-05-04 | 1972-03-07 | Du Pont | Process for the manufacture of hydrogen cyanide |
US11905173B2 (en) | 2018-05-31 | 2024-02-20 | Haldor Topsøe A/S | Steam reforming heated by resistance heating |
WO2021063799A1 (en) * | 2019-10-01 | 2021-04-08 | Haldor Topsøe A/S | Cyanide on demand |
CN114430699A (en) * | 2019-10-01 | 2022-05-03 | 托普索公司 | Production of cyanide on demand |
Also Published As
Publication number | Publication date |
---|---|
BE506771A (en) |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2579843A (en) | Method foe the manufacture of | |
US2051363A (en) | Process fob the preparation of | |
GB1446378A (en) | Process for producing carbon monoxide from light hydrocarbons | |
ITMI20101001A1 (en) | CATALYTIC SYSTEM FOR LOW-TIME CATALYTIC PARTIAL OXIDATION PROCESSES | |
UA56344C2 (en) | a process for the production of olefins | |
US3479298A (en) | Production of hydrogen | |
US3545926A (en) | Production of synthesis gas and hydrogen | |
US1823503A (en) | Manufacture of unsaturated hydrocarbons | |
US2711419A (en) | Process and apparatus for making fuel gas | |
US2524840A (en) | Hydrogen production | |
US1965770A (en) | Production of acetylene | |
US2346754A (en) | Fuel oil gasification | |
US2552737A (en) | Process for producing synthesis gas | |
US4087350A (en) | Olefins production by steam cracking over manganese catalyst | |
GB722025A (en) | Process and apparatus for the production of hydrogen cyanide | |
US2207581A (en) | Preparation of products containing valuable hydrocarbons or their derivatives | |
US2701756A (en) | Manufacture of synthesis gas | |
US1134677A (en) | Process of producing propylene from acetylene and methane. | |
US2679544A (en) | Manufacture of acetylene and mixtures of acetylene and hydrogen cyanide | |
EP1140744B1 (en) | Process for the production of olefins | |
US2684896A (en) | Process for the production of carbon monoxide and hydrogen | |
US2628890A (en) | Process for the decomposition of hydrocarbons | |
US2409676A (en) | Preparation of indole | |
WO2022200532A1 (en) | Method for producing a synthesis gas mixture | |
US3063803A (en) | Turbulent flow flame synthesis of hydrogen cyanide |