BE360969A - - Google Patents
Info
- Publication number
- BE360969A BE360969A BE360969DA BE360969A BE 360969 A BE360969 A BE 360969A BE 360969D A BE360969D A BE 360969DA BE 360969 A BE360969 A BE 360969A
- Authority
- BE
- Belgium
- Prior art keywords
- sulphide
- carbon
- hydrogen
- hydrogen sulphide
- ammonium
- Prior art date
Links
- RWSOTUBLDIXVET-UHFFFAOYSA-N dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 18
- QGJOPFRUJISHPQ-UHFFFAOYSA-N carbon bisulphide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- UYJXRRSPUVSSMN-UHFFFAOYSA-P Ammonium sulfide Chemical compound [NH4+].[NH4+].[S-2] UYJXRRSPUVSSMN-UHFFFAOYSA-P 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-N Carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims description 4
- 239000003245 coal Substances 0.000 claims description 4
- 238000004821 distillation Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 4
- 229910052717 sulfur Inorganic materials 0.000 claims description 4
- 239000011593 sulfur Substances 0.000 claims description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000000875 corresponding Effects 0.000 claims description 2
- XXGJRAFLOAKNCC-UHFFFAOYSA-N methane;molecular hydrogen Chemical compound C.[H][H] XXGJRAFLOAKNCC-UHFFFAOYSA-N 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000011541 reaction mixture Substances 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 235000011149 sulphuric acid Nutrition 0.000 claims 1
- 239000001117 sulphuric acid Substances 0.000 claims 1
- 238000001356 surgical procedure Methods 0.000 claims 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- RPNXLYQMFYAECF-UHFFFAOYSA-N [NH4+]=S Chemical class [NH4+]=S RPNXLYQMFYAECF-UHFFFAOYSA-N 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000003463 sulfur Chemical class 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/70—Compounds containing carbon and sulfur, e.g. thiophosgene
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
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Procédé de préparation de sulfure de carbone.
La conversion de l'acide sulfhydrique en sulfure de carbone à l'aide de carbone incandescent est connue.
Mais l'application de ce procédé dans l'industrie n'est économique que lorsqu'on peut avoir à un prix plus bas que celui du soufre élémentaire le soufre contenu dans l'aoi-. de sulfhydrique . Cette condition est remplie par exemple . avec le soufre contenu en grande partie sous forme d'aci- de sulfhydrique dans les gaz provenant de la distillation du charbon. Une partie de ce soufre se précipite sous forme de sulfures d'ammonium lors de la conde nsation de l'eau . ammoniacale.
Il est avantageux de séparer également sous @ forme de sulfure d'ammonium, d'autres quantités d'acide
<Desc/Clms Page number 2>
sulfhydrique qui actuellement sont éliminées par le lavage à sec, Par chauffage ou par introduction d'acide carboni- que, l'acide sulfhydrique peut dd nouveau être expulsé de la solution de sulfure d'ammonium, sous forme concen- trée et il se prête alors parfaitement à la conversion en sulfure de carbone à l'aide de carbone incandescent.
On a vu maintenant que la réaction entre l'acide sulfhydrique et le carbone est une réaction d'équilibre.
On a donc trouvé très avantageux de ne réaliser la conver- sion qu'imparfaitement, cela convenablement rien que jus- qu'à ce qu'il y ait eu conversion de 70 % de l'acide sulf- hydrique au maximum. L'acide sulfhydrique, mélangé avec la quantité correspondante d'hydrogène, est ensuite - apr@s élimination du sulfure de carbine qui s'est formé - conve- nablement fixé par une solution de sulfure d'ammonium, par exemple de l'eau ammoniacale; par chauffage ou à l'aide d'acide carbonique, on expulse l'acide sulfhydrique de nou- veau sous forme concentrée, et on le ramène dans le pro- cédé, soit dans le four à réaction.
Au lieu d'une solution de sulfure d'ammonium, on pourra évidemment utiliser aussi@'autres moyens d'absorp- tion chimiques, par exemple une solution de soude ou en- core des absorbants solides.
D'ailleurs, le mélange d'hydrogène et d'acide sul- fhydrique qui quitte le four à réaction et duquel le sul- fure de carbone dut d'abord séparé, peut de nouveau être mélangé avec le gaz brut de la distillation de charbon contenant de l'acide sulfhydrique , et de cette manière on peut réaliser la récupération de l'acide sulfhydrique non converti en sulfure de carbone, ensemble avec l'acide sulfhydrique déjà contenu dans le gaz. L'hydrogène obtenu par la conversion sert¯alors pour en enrichir le gaz de charbon.
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Process for the preparation of carbon disulphide.
The conversion of hydrogen sulfide to carbon disulfide using glowing carbon is known.
But the application of this process in industry is economical only when the sulfur contained in the alcohol can be obtained at a lower price than that of elemental sulfur. of hydrogen sulfide. This condition is fulfilled for example. with the sulfur contained largely in the form of hydrogen sulphide in the gases from the distillation of coal. Part of this sulfur precipitates in the form of ammonium sulphides during the condensation of water. ammoniacal.
It is advantageous to separate also in the form of ammonium sulphide, other quantities of acid
<Desc / Clms Page number 2>
hydrogen sulphide which are presently removed by dry washing, by heating or by introduction of carbonic acid, the hydrogen sulphide can again be expelled from the ammonium sulphide solution in concentrated form and it is suitable then perfectly to conversion to carbon disulfide using glowing carbon.
We have now seen that the reaction between hydrogen sulphide and carbon is an equilibrium reaction.
It has therefore been found very advantageous to carry out the conversion only imperfectly, suitably only until there has been a conversion of at most 70% of the hydrogen sulfide. The hydrogen sulphide, mixed with the corresponding quantity of hydrogen, is then - after removing the carbine sulphide which has formed - suitably fixed by a solution of ammonium sulphide, for example water. ammoniacal; by heating or with the aid of carbonic acid, the hydrogen sulphide is again expelled in concentrated form, and it is returned to the process, ie to the reaction furnace.
Instead of an ammonium sulphide solution, it is of course also possible to use other chemical means of absorption, for example a sodium hydroxide solution or even solid absorbents.
Moreover, the mixture of hydrogen and hydrogen sulphide which leaves the reaction furnace and from which the carbon sulphide had first to be separated, can again be mixed with the raw gas from the coal distillation. containing hydrogen sulfide, and in this way the recovery of hydrogen sulfide unconverted into carbon disulphide can be achieved together with the hydrogen sulfide already contained in the gas. The hydrogen obtained by the conversion is then used to enrich coal gas with it.
Claims (1)
Publications (1)
Publication Number | Publication Date |
---|---|
BE360969A true BE360969A (en) |
Family
ID=34164
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE360969D BE360969A (en) |
Country Status (1)
Country | Link |
---|---|
BE (1) | BE360969A (en) |
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0
- BE BE360969D patent/BE360969A/fr unknown
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