DE944213C - Process for the production of ethylene from coke oven gases - Google Patents
Process for the production of ethylene from coke oven gasesInfo
- Publication number
- DE944213C DE944213C DEB3547D DEB0003547D DE944213C DE 944213 C DE944213 C DE 944213C DE B3547 D DEB3547 D DE B3547D DE B0003547 D DEB0003547 D DE B0003547D DE 944213 C DE944213 C DE 944213C
- Authority
- DE
- Germany
- Prior art keywords
- ethylene
- coke oven
- gases
- washing
- production
- 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
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
- C10K1/16—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with non-aqueous liquids
- C10K1/18—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with non-aqueous liquids hydrocarbon oils
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/11—Purification; Separation; Use of additives by absorption, i.e. purification or separation of gaseous hydrocarbons with the aid of liquids
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Description
Verfahren zur Gewinnung von äthylen aus Kokereigasen Beim Auswaschen des Äthylens aus Kokereigasen mit Hilfe von für das Äthylen selektiv wirkenden Lösungsmitteln, z. B. Toluol bei - IoO und IO atü, erweist sich der geringe Gehalt der normalen Koksofengase von im allgemeinen nur I,5 bis 1,8 Volumprozent Äthylen als außerordentlich nachteilig, denn es gelingt nur durch viermaliges Exhalieren der Waschlösung und dreimaliges Waschen der Exhalationsgase, zu reinem Äthylen zu gelangen.Process for the production of ethylene from coke oven gases When washing out of ethylene from coke oven gases with the help of solvents that are selective for ethylene, z. B. toluene in - IoO and IO atü, the low content of the normal proves Coke oven gases of generally only 1.5 to 1.8 percent by volume of ethylene are considered extraordinary disadvantageous, because it is only possible by exhaling the washing solution four times and washing the exhalation gases three times to obtain pure ethylene.
Bei dreimaligem Waschen (einschließlich der Koksofenwäsche) erhält man noch kein reines äthylen, weil der Gehalt der Koksofengase an Kohlenwasserstoffen, die ebenfalls von Lösungsmitteln, wie Benzolkohlenwasserstoffen ausgewaschen werden, im Verhältnis zu dem an Äthylen zu hoch ist.When washed three times (including the coke oven wash) it is preserved there is still no pure ethylene, because the content of hydrocarbons in the coke oven gases which are also washed out by solvents such as benzene hydrocarbons, is too high in relation to the amount of ethylene.
Vor allem ist das Methan, von dem im Mittel 25 Volumprozent vorhanden sind, von Äthylen nur schwer zu trennen, da es sich ebenfalls noch verhältnismäßig leicht in den Benzolkohlenwasserstoffen löst. Durch zu häufige Wasch- und Exhalationsoperatiönen wird aber die Gewinnung von Äthylen aus Koksofengasen zu umständlich und kostspielig, so daß sie sich in der Technik bisher nicht durchgesetzt hat.Above all, there is methane, of which an average of 25 percent by volume is available are difficult to separate from ethylene, since it is also still proportionate easily dissolves in benzene hydrocarbons. Through too frequent washing and exhalation operations but the extraction of ethylene from coke oven gases becomes too cumbersome and expensive, so that it has not yet established itself in technology.
Es wurde nun gefunden, daß man Äthylen aus Koksofengasen unter in bezug auf Anlage- und Betriebskosten erheblich günstigeren Bedingungen gewinnen kann, wenn man zum Auswaschen Innengas verwendet, welches bis zu IO Volumprozent Äthylen enthält und dessen Methan-Äthylen-Vo- lumverhältnis etwa 4: I beträgt, und gleichzeitig in den Koksofen noch Rückstandsöle einbläst. Je 1 °/6 Rückstandsölzusatz, bezogen auf den Kohleeinsatz im Koksofen, vermag den Äthylengehalt des Koksofengases um 1/2 0/o zu erhöhen. Diese Maßnahme läßt sich entweder in den letzten Stunden der Garungszeit unter gleich2eitiger Erzielung einer Kühlung des Kokses durchführen, oder man kann den letzten Teil der ersten Hälfte der Gasungsperiode, in welcher die Temperatur im Koksofen bereits genügend hoch ist, um Kohlenwasserstoffe bevorzugt zu Athylen zu zersetzen, für die Zuführung der Kohlenwasserstoffe vorsehen. It has now been found that ethylene can be obtained from coke oven gases under in Obtain considerably more favorable conditions in terms of investment and operating costs can, if you use internal gas for washing, which can be up to 10 percent by volume Contains ethylene and its methane-ethylene volume around ratio 4: I, and at the same time still blowing residual oils into the coke oven. 1 each ° / 6 The addition of residual oil, based on the amount of coal used in the coke oven, can reduce the ethylene content to increase the coke oven gas by 1/2 0 / o. This measure can either be in the the last hours of the cooking time with simultaneous cooling of the Carry out coke, or the last part of the first half of the gassing period, in which the temperature in the coke oven is already high enough to generate hydrocarbons preferably to decompose to ethylene, provide for the supply of hydrocarbons.
Unterwirft man das so abgesaugte Innengas der selektiven. Äthylenwäsche, so spart man bei der Aufarbeitung der Waschlösung meist zwei Wäschen, um auf denselben Reinheitsgrad wie beim Waschen des Gesamtgases mit Benzolkohlenwasserstoffen oder deren Gemischen zu kommen. Das Verfahren der Erfindung arbeitet also unter erheblich kleinerem Aufwand an Anlage- und Betriebskosten und eröffnet die Möglichkeit, nunmehr in überraschend lohnender Weise das Äthylen aus Koksofengasen zu gewinnen. If the internal gas extracted in this way is subjected to the selective. Ethylene washing, In this way, when working up the washing solution, you usually save two washes in order to access the same Degree of purity as when washing the entire gas with benzene hydrocarbons or their mixtures to come. The method of the invention thus operates under considerably lower investment and operating costs and opens up the possibility of now to win the ethylene from coke oven gases in a surprisingly worthwhile way.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB3547D DE944213C (en) | 1943-02-09 | 1943-02-09 | Process for the production of ethylene from coke oven gases |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB3547D DE944213C (en) | 1943-02-09 | 1943-02-09 | Process for the production of ethylene from coke oven gases |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE944213C true DE944213C (en) | 1956-06-07 |
Family
ID=6953272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEB3547D Expired DE944213C (en) | 1943-02-09 | 1943-02-09 | Process for the production of ethylene from coke oven gases |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE944213C (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR580711A (en) * | 1923-04-23 | 1924-11-14 | Gelsenkirchener Bergwerks Ag | Process for the treatment and use of gases produced in the low temperature carbonization (incomplete combustion) of coal, bituminous lignite and similar materials |
| DE565948C (en) * | 1927-04-17 | 1932-12-07 | E H Alfred Pott Dr Ing | Process for the purification of long-distance haulage coal distillation gases |
| FR835832A (en) * | 1937-04-03 | 1939-01-04 | Ig Farbenindustrie Ag | Process for obtaining olefins starting from gas mixtures containing them |
-
1943
- 1943-02-09 DE DEB3547D patent/DE944213C/en not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR580711A (en) * | 1923-04-23 | 1924-11-14 | Gelsenkirchener Bergwerks Ag | Process for the treatment and use of gases produced in the low temperature carbonization (incomplete combustion) of coal, bituminous lignite and similar materials |
| DE565948C (en) * | 1927-04-17 | 1932-12-07 | E H Alfred Pott Dr Ing | Process for the purification of long-distance haulage coal distillation gases |
| FR835832A (en) * | 1937-04-03 | 1939-01-04 | Ig Farbenindustrie Ag | Process for obtaining olefins starting from gas mixtures containing them |
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