Phenols from coal hydrogenation oils

Technical Report ·

OSTI ID:6818635

Bremmann,

This report deals with the production of phenols from hydrogenation oils. Phenols was intended to mean the carbolic acid, the cresols, and the xylenols, while the hydrogenation oils referred to those oils used in hydrogenation, in particular, oils produced in low temperature coking of brown coal, as well as the oil produced during the hydrogenation process. The growing importance of phenols is discussed as the first topic. The next topic is phenol removal from the different oils. This includes a discussion of low temperature carbonization tars, light oils, and thin tars. In addition to these, some oils produced directly in the coal hydrogenation could be used for extracting phenols. The three processes used at Leuna to extract pure acid oil from the oils were the hot water process, the sodium sulfide process, and the counter-current sodium hydroxide process. The distillation of phenols obtained by one of these processes is also discussed. New developments in the area of recovery of phenol oil from low temperature tars and developments with liquid phase hydrogenation oils are also discussed. Figure 1 of this report showed a diagram of the process of phenol recovery with hot water. Figure 2 showed a diagram of phenol recovery with solution of sodium sulfide. Figure 3 showed the stepwise extraction of phenols with NaOH, and Figure 4 showed the composition of the phenols in the separate steps. Removal of phenols from hydrogenation oils prior to vapor-phase hydrogenation seemed to have several advantages for the hydrogenation processs itself. In distillation of phenol-containing oils, there was still a problem in terms of strong corrosion of the equipment by high-boiling acid organic substances in the residue. 4 figures.

• Research Organization: I.G. Farbenindustrie, A.G., Merseburg (Germany)
• OSTI ID: 6818635
• Report Number(s): TOM-237-794-804
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010401 -- Coal & Coal Products-- Carbonization-- (-1987)
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
ALKALI METAL COMPOUNDS
ALKALOIDS
AROMATICS
BOILING POINTS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBONACEOUS MATERIALS
CARBONIZATION
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
CRESOLS
DECOMPOSITION
DISTILLATION
ELECTROLYSIS
ENERGY SOURCES
EXTRACTION
EXTRACTION APPARATUSES
FOSSIL FUELS
FUELS
HIGH PRESSURE
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
HYDROGENATION
HYDROXIDES
HYDROXY COMPOUNDS
LOW TEMPERATURE
LYSIS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHENOLS
PHYSICAL PROPERTIES
PRODUCTION
RECOVERY
REMOVAL
RESIDUES
SEPARATION PROCESSES
SODIUM COMPOUNDS
SODIUM HYDROXIDES
SODIUM SULFIDES
SOLVENT EXTRACTION
SULFIDES
SULFUR COMPOUNDS
TAR
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
VAPOR CONDENSATION
WATER
XYLENOLS