DE679974C - Process for removing phenol from phenol-containing waste water by pressure hydrogenation - Google Patents
Process for removing phenol from phenol-containing waste water by pressure hydrogenationInfo
- Publication number
- DE679974C DE679974C DEH151678D DEH0151678D DE679974C DE 679974 C DE679974 C DE 679974C DE H151678 D DEH151678 D DE H151678D DE H0151678 D DEH0151678 D DE H0151678D DE 679974 C DE679974 C DE 679974C
- Authority
- DE
- Germany
- Prior art keywords
- phenol
- water
- waste water
- hydrogenation
- containing waste
- 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
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Description
Verfahren zum Entfernen von Phenol aus phenolhalti?en Abwässern der Druckhydrierung Bei verschiedenen Verfahren der Kohleveredclung, z. B. der Schwelerei, der Kokerei und der Hydrierung, fallen phenolhaltige Abwässer an. Diese Wässer können wegen der Giftigkeit des Phenols nicht ohne weiteres als Abwasser in die Flu.ßläufe gelassen werden, sondern müssen vorher von Phenol befreit «erden. Für diese Reinigung sind verschiedene Verfahren bekannt,. wie z. B. das Waschen mit Benzol oder Trikresylphosphat oder die Behandlung mit besonders hergestellten festen Körpern. z. B. aktiver Kohle.Process for removing phenol from wastewater containing phenol Pressure hydrogenation In various processes of coal refinement, e.g. B. the indulgence, the coking plant and hydrogenation, waste water containing phenol is produced. These waters can Because of the toxicity of the phenol, it is not easily discharged into the rivers as waste water but must be freed from phenol beforehand. For this cleaning various methods are known. such as B. washing with benzene or tricresyl phosphate or treatment with specially manufactured solid bodies. z. B. active coal.
Wenn auch bei all diesen Verfahren eine weitgehende Reinigung der Abwässer gelingt, so werden nur unter günstigen Bedingungen die Unkosten dieser Entphenolierungsverfahren durch den Wert der gewonnenen Phenole gedeckt.Albeit with all these processes an extensive cleaning of the If wastewater is successful, the costs of this will only be reduced under favorable conditions Dephenolation process covered by the value of the phenols obtained.
Im Falle der Hydrierung von hohle, Teeren und anderen sauerstoffhaltigen Stolten zum Zwecke der Gewinnung leichtsiedender Treibstoffe arbeitet man in der Regel in zwei Phasen. In der Sumpfphase werden zuerst die hoclunolekularcn Verbindungen auf gespalten und in der Gasphase die Mittelöle zu Benzin weiterhydriert. Dabei ist es zweckmäßig, die Erzeugnisse der Sumpfphase vor ihrer Weiterhydrierung durch Destillation von den hochsiedenden Stoffen zu befreien, die in den Arbeitsgang des Sumpfofens zurückgeleitet werden. Führt man diese Trennung in bekannten Destillationssäulen in üblicher, schonender Weise unter Zusatz von Wasserdampf durch, so löst dieser bei der Kondensation so viel Pliciiol aus dem öl, dah es nicht ohne Reinigung als Abwasser ab- gelassen werden kann. Auch bei der -Schwelung von Hydrierungsrückständen fallen phenolhaltige Abwässer an.In the case of the hydrogenation of hollow tars, tars and other oxygen-containing stilts for the purpose of obtaining low-boiling fuels, one usually works in two phases. In the sump phase, the hydro-molecular compounds are first broken down, and in the gas phase the middle oils are further hydrogenated to form gasoline. It is advisable to remove the high-boiling substances from the products of the sump phase by distillation before they are further hydrogenated and these are returned to the sump furnace operation. Carrying out this separation in distillation columns known in conventional, gentle manner with the addition of water vapor, this dissolves in the condensation as much Pliciiol from the oil, it has not DAH without purification as waste water can be left off. Phenol-containing wastewater is also produced when carbonizing hydrogenation residues.
Es wurde nun gefunden, daß man diese Phenolwässer im eigenen Betrieb praktisch ohne Mehraufwand weitgehend cntlilietioticren kann, wenn man sie an Stelle von Frischspülwasser, das der Entfernung von Ammoniumsalzen dient, in den Hochdruckkreislauf an .einer Stelle nach dem Wärmeaustauscher einspritzt, wo das zum Teil noch dampfförmige Öl durch Wasserkühlung abgeschieden wird. Hierbei lösen sich die Phenole zum größten Teil im Öl und verbleiben auch darin bei der nachfolgenden Scheidung des Öles von Wasser. Auf diese Weise gelingt es, die Phenole für die Hydrierung zu er-' halten, wo sie in der Gasphase zu hochwertigen Treibstoffen weiterverarbeitet werden.It has now been found that this phenolic water can be used in-house largely cntlilietioticren practically without additional effort can if they are used in place of fresh rinse water, which is used to remove ammonium salts, injected into the high pressure circuit at a point after the heat exchanger, where the partly still vaporous oil is separated by water cooling. Here Most of the phenols dissolve in the oil and also remain in the oil subsequent separation of the oil from water. In this way the phenols succeed for hydrogenation, where they turn into high-quality fuels in the gas phase are further processed.
Beispiel Bei der Verarbeitung von iooo t Hydrierkohle/Tag mit i, 5 % Wassergehalt fallen bei So cbm Frischspülwasserzugabe zusammen mit dem aus dem Sauerstoffgehalt der Kolle gebildeten Wasser etwa i6o cbm/Tag Hydrier-. abwasser an mit @eiriem Phcnolgehalt von etwa 2,5g/Liter.Example When processing iooo t hydrogenated coal / day with i, 5 % Water content falls with So cbm fresh rinse water addition together with that from the Oxygen content of the water formed by the water is about 160 cbm / day. Hydrogenation. sewage with @eiriem Phcnol content of about 2.5g / liter.
Außerdem fallen in der zugehörigen Destillation der Kohleöle mit Dampfzusatz 6o t Abwasser mit 45g Phenol/Liter und etwa 40t Schwelwasser mit 5- Phenol/Liter an. Insgesamt müssen 26o cbm mit 3.3t Phenol aufgearbeitet werden. _ -Spritzt man an Stelle der 8o cbm Frischwasser die gesamte Menge des phenolhaltigen Destillations- und Schwelwassers in das Hoch= drucksystem als Spülwasser ein, so fallen statt i6ocbm Hydrierwasser iSocbm an, aber überraschenderweise mit einem nur unwesentlich höheren Phenolgehalt von etwa 2,5 bis 3 g/Liter, so daß nur etwa 0.5t Phenol/Tag ins Abwasser gelangen. Durch diese iMaßnahme wird in einfacher Weise ein Ent= phenolierungseffekt von S5o@o erreicht.In addition, the associated distillation of coal oils with added steam produces 60 t of wastewater with 45 g of phenol / liter and about 40 t of smoldering water with 5- phenol / liter. A total of 26o cbm with 3.3t phenol has to be processed. _ -If instead of the 80 cbm of fresh water, the entire amount of the phenol-containing distillation and smoldering water is injected into the high-pressure system as rinsing water, hydrogenation water is obtained instead of 160 cubic meters, but surprisingly with an only insignificantly higher phenol content of around 2.5 to 3 g / liter, so that only about 0.5 t phenol / day get into the wastewater. By means of this measure, a dephenolation effect of S5o @ o is achieved in a simple manner.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH151678D DE679974C (en) | 1937-05-14 | 1937-05-14 | Process for removing phenol from phenol-containing waste water by pressure hydrogenation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH151678D DE679974C (en) | 1937-05-14 | 1937-05-14 | Process for removing phenol from phenol-containing waste water by pressure hydrogenation |
Publications (1)
Publication Number | Publication Date |
---|---|
DE679974C true DE679974C (en) | 1939-08-18 |
Family
ID=7181227
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEH151678D Expired DE679974C (en) | 1937-05-14 | 1937-05-14 | Process for removing phenol from phenol-containing waste water by pressure hydrogenation |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE679974C (en) |
-
1937
- 1937-05-14 DE DEH151678D patent/DE679974C/en not_active Expired
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