DE873996C - Process for the extraction of sulfur from gases containing hydrogen sulfide, carbon dioxide and nitrogen compounds - Google Patents
Process for the extraction of sulfur from gases containing hydrogen sulfide, carbon dioxide and nitrogen compoundsInfo
- Publication number
- DE873996C DE873996C DEK4372D DEK0004372D DE873996C DE 873996 C DE873996 C DE 873996C DE K4372 D DEK4372 D DE K4372D DE K0004372 D DEK0004372 D DE K0004372D DE 873996 C DE873996 C DE 873996C
- Authority
- DE
- Germany
- Prior art keywords
- sulfur
- carbon dioxide
- nitrogen compounds
- hydrogen sulfide
- extraction
- 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
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims description 19
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims description 18
- 239000007789 gas Substances 0.000 title claims description 15
- 229910052717 sulfur Inorganic materials 0.000 title claims description 11
- 239000011593 sulfur Substances 0.000 title claims description 11
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 title claims description 8
- 229910017464 nitrogen compound Inorganic materials 0.000 title claims description 7
- 150000002830 nitrogen compounds Chemical class 0.000 title claims description 7
- 239000001569 carbon dioxide Substances 0.000 title claims description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims description 6
- 229910000037 hydrogen sulfide Inorganic materials 0.000 title claims description 5
- 238000000034 method Methods 0.000 title claims description 5
- 238000000605 extraction Methods 0.000 title description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims 1
- 229910001882 dioxygen Inorganic materials 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000010494 dissociation reaction Methods 0.000 description 2
- 230000005593 dissociations Effects 0.000 description 2
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 2
- 241000722270 Regulus Species 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000011084 recovery Methods 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
- C01B17/00—Sulfur; Compounds thereof
- C01B17/02—Preparation of sulfur; Purification
- C01B17/04—Preparation of sulfur; Purification from gaseous sulfur compounds including gaseous sulfides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
Description
Verfahren zur Gewinnung von Schwefel aus Gasen, die Schwefelwasserstoff, Kohlendioxyd und Stickstoffverbindungen enthalten Nach der von C. F. C 1 a u s angegebenen klassischen Arbeitsweise wird aus Schwefelwasserstoff elementarer Schwefel durch Umsetzen des Ausgangsgases mit einer beschränkten Menge Sauerstoff (Luft) gewonnen. Durch Anwendung gewisser Kontakte läßt sich dabei eine Temperatur von etwa 350 bis 4oo°' einhalten. Bei der Verarbeitung von Schwefelwasserstoffgas, welches Stickstoffverbindungen, wie Blausäure, Ammoniak und Amine, enthält, muß man die Reaktionstemperatur wesentlich höher wählen, damit die Stickstoffverbindungen weitgehend bis auf elementaren Stickstoff abgebaut werden. Geschieht das nicht, so bilden sich bei der Reaktion leicht Ammoniumsalze, die sich dem entstandenen elementaren Schwefel in kristalliner Form beimischen und dessen Zusammenfließen zu einem Regulus verhindern.Process for the extraction of sulfur from gases containing hydrogen sulphide, carbon dioxide and nitrogen compounds According to the classical procedure given for CF C 1, elemental sulfur is obtained from hydrogen sulphide by reacting the starting gas with a limited amount of oxygen (air). By using certain contacts, a temperature of about 350 to 400 ° can be maintained. When processing hydrogen sulfide gas, which contains nitrogen compounds such as hydrocyanic acid, ammonia and amines, the reaction temperature must be chosen to be significantly higher so that the nitrogen compounds are largely broken down down to elemental nitrogen. If this does not happen, ammonium salts are easily formed during the reaction, which add to the resulting elemental sulfur in crystalline form and prevent it from flowing together to form a regulus.
Bei der letzteren Arbeitsweise hat sich nun herausgestellt, daß sich das Schwefelausbringen in weitem Ausmaß bei Änderung der Betriebsverhältnisse verändert. Wie gefunden wurde, hängen die Schwankungen des Schwefelausbringens vor allem mit dem verschiedenen Gehalt des Ausgangsgases an Kohlensäure zusammen. Es wurde festgestellt, daß bei den für den Abbau der Stickstoffverbindungen erforderlichen hohen Temperaturen (iooo bis i3oö°) die Kohlensäure mehr oder weniger weitgehend in Kohlenoxyd und Sauerstoff aufgespalten wird. Der Sauerstoff reagiert mit dem entstandenen Schwefeldampf unter Bildung von Schwefeldioxyd, wodurch die Ausbeute an 'elementarem Schwefel sinkt..In the latter mode of operation it has now been found that the sulfur output changes to a large extent when the operating conditions change. As has been found, the fluctuations in the sulfur output are mainly related the different carbon dioxide content of the starting gas. It was determined, that at the high temperatures required for the breakdown of the nitrogen compounds (iooo to i3oö °) the carbonic acid more or less largely in carbon dioxide and Oxygen is broken down. The oxygen reacts with the resulting sulfur vapor with formation of sulfur dioxide, whereby the yield of 'elemental Sulfur is sinking ..
Die Erfindung besteht nun darin, bei der Gewinnung von elementarem Schwefel aus Gasen, die neben. Schwefelwasserstoff erhebliche Mengen an Kohlensäure und ferner störende Stickstoffverbindungen enthalten und daher bei hohen Reaktionstemperaturen (iooo bis 130o°) umgesetzt werden müssen, die Zufuhr von elementarem Sauerstoff (Luft) zum Reaktionsgemisch um so viel unter die sich stöchiometrisch aus dem Schwefelwasserstoffgehalt ergebende Menge herabzusetzen, wie der beider Dissoziation der Kohlensäure frei werdenden Sauerstoffmenge entspricht, und gleichzeitig irden Reaktionsraum zusätzlich jene Wärmemenge einzuführen, die zur Herbeiführung der endothermen Aufspaltung der Kohlensäure unter Aufrechterhaltung der angegebenen hohen Temperatur notwendig ist.The invention consists in the extraction of elementary Sulfur from gases next to. Hydrogen sulfide produces significant amounts of carbonic acid and also contain troublesome nitrogen compounds and therefore at high reaction temperatures (iooo to 130o °) must be implemented, the supply of elemental oxygen (Air) to the reaction mixture by as much below the stoichiometric result from the hydrogen sulfide content the resulting amount, like the two dissociation of carbonic acid free corresponding amount of oxygen, and at the same time earth the reaction space in addition to introduce the amount of heat necessary to bring about the endothermic splitting of the Carbon dioxide while maintaining the specified high temperature is necessary.
Das erfindungsgemäße Verfahren bietet einen vorteilhaften Weg, um elementaren Schwefel aus großen Massen-von Industriegasen zu gewinnen, deren Behandlung sich nach den bisher bekannten Schwefelgewinnungsverfahren nicht lohnt. Beispielsweise gelingt es durch Anwendung der Erfindung, elementaren Schwefel in einer Ausbeute von 85 bis go%- aus einem Gas zu gewinnen, das 32 % H2 S und 65 % C 02 sowie 3 % Stickstoffverbindungen enthält Es ist natürlich nicht unbedingt notwendig, bei Bemessung des Luftgemisches die Dissoziation der gesamten imAusgängsgas anwesendenKohlensäuremenge voll zu berücksichtigen, wenn auf eine weitgehende Gewinnung von elementarem Schwefel kein Wert gelegt wird.The inventive method offers an advantageous way to To obtain elemental sulfur from large masses of industrial gases, their treatment is not worthwhile according to the previously known sulfur recovery processes. For example it is possible by application of the invention, elemental sulfur in one yield from 85 to go% - to be obtained from a gas that contains 32% H2 S and 65% C 02 as well as 3% It is of course not absolutely necessary when designing of the air mixture is the dissociation of the total amount of carbonic acid present in the outlet gas to be fully taken into account when looking for an extensive extraction of elemental sulfur no value is placed.
Aus dem heißen Reaktionsgas wird der Schwefel in bekannter Weise durch Kühlen bis auf eine Temperatur oberhalb des Schwefelschmelzpunktes kondensiert und die flüssige Schwefelmasse in geeigneten Formen zum Erstarren gebracht.The sulfur is removed from the hot reaction gas in a known manner Cooling to a temperature above the melting point of sulfur condenses and solidified the liquid sulfur mass in suitable forms.
An die Gewinnung des elementaren Schwefels wird vorteilhaft eine Anlage zur Umwandlung des im Restgas vorhandenen Schwefeldioxydes in Schwefelsäure angeschlossen, wodurch es möglich ist, den Schwefelgehalt des Ausgangsgases restlos nutzbar zu machen.A plant is advantageous for the extraction of elemental sulfur connected to convert the sulfur dioxide present in the residual gas into sulfuric acid, This makes it possible to fully utilize the sulfur content of the starting gas do.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEK4372D DE873996C (en) | 1943-06-08 | 1943-06-08 | Process for the extraction of sulfur from gases containing hydrogen sulfide, carbon dioxide and nitrogen compounds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEK4372D DE873996C (en) | 1943-06-08 | 1943-06-08 | Process for the extraction of sulfur from gases containing hydrogen sulfide, carbon dioxide and nitrogen compounds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE873996C true DE873996C (en) | 1953-04-20 |
Family
ID=7210317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEK4372D Expired DE873996C (en) | 1943-06-08 | 1943-06-08 | Process for the extraction of sulfur from gases containing hydrogen sulfide, carbon dioxide and nitrogen compounds |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE873996C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2448078A1 (en) * | 1973-10-10 | 1975-04-24 | Comprimo Bv | PROCESS FOR THE REMOVAL OF HYDROGEN SULFUR AND AMMONIA FROM GAS MIXTURES WITH THE FORMATION OF ELEMENTARY SULFUR AND WATER |
| FR2387903A1 (en) * | 1977-04-21 | 1978-11-17 | Ght Hochtemperaturreak Tech | PROCESS FOR MANUFACTURING SULFUR AND SULFURIC ACID FROM HYDROGEN SULPHIDE |
-
1943
- 1943-06-08 DE DEK4372D patent/DE873996C/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2448078A1 (en) * | 1973-10-10 | 1975-04-24 | Comprimo Bv | PROCESS FOR THE REMOVAL OF HYDROGEN SULFUR AND AMMONIA FROM GAS MIXTURES WITH THE FORMATION OF ELEMENTARY SULFUR AND WATER |
| FR2387903A1 (en) * | 1977-04-21 | 1978-11-17 | Ght Hochtemperaturreak Tech | PROCESS FOR MANUFACTURING SULFUR AND SULFURIC ACID FROM HYDROGEN SULPHIDE |
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