Large-scale experiment in a 1 cubic meter DHD apparatus (Chamber 504) for production of toluene through dehydrogenation of a DHD liquid-fraction product (in German)
Technical Report
·
OSTI ID:5255881
The beginning material for this experiment was a fraction boiling from 70/sup 0/C to 120/sup 0/C from the liquid product of the DHD process in Poelitz; this fraction was about 35% to 40% of the total liquid product. The report gave a rather full analysis of this starting material, which had about 41% toluene by weight already. During the experiment, the catalyst used was 7360 and the pressure was held at 40 atm measured at the oven exit. The throughput was varied between 0.32 and 0.20 kg/m/sup 3/ of reaction volume, the amount of circulating gas was varied between 1.5 and 1.75 m/sup 3//kg of charge, and the operating time was varied between 43 hrs and 20 hrs. The gas introduced consisted of about 25% to 20% hydrogen and 75% to 80% nitrogen, and its density was about 0.8 to 0.9 kg/m/sup 3/. The experiment seemed to show that the optimum conditions were a throughput of 0.2 kg/m/sup 3/ and an operating time of 25 hrs (with regeneration time of 18 to 26 hrs). Under these conditions, about 79% of the product was butane-free liquid which contained about 89% aromatics; there was a relatively large loss to choking (0.6% or more). Tests indicated that about 51% to 52.7% of the product was toluene satisfying purity standards. 2 tables.
- Research Organization:
- I.G. Farbenindustrie, Ludwigshafen (Germany)
- OSTI ID:
- 5255881
- Report Number(s):
- TOM-251-728-731
- Country of Publication:
- United States
- Language:
- German
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
010500 -- Coal
Lignite
& Peat-- Products & By-Products
AROMATICS
BOILING POINTS
CATALYSTS
CHEMICAL COMPOSITION
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COAL LIQUEFACTION
DEHYDROGENATION
DISTILLATION
EVALUATION
FUELS
GASOLINE
HIGH TEMPERATURE
HYDROCARBONS
LIQUEFACTION
MEDIUM PRESSURE
ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
PRODUCTION
SEPARATION PROCESSES
THERMODYNAMIC PROPERTIES
TOLUENE
TRANSITION TEMPERATURE
YIELDS
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
010500 -- Coal
Lignite
& Peat-- Products & By-Products
AROMATICS
BOILING POINTS
CATALYSTS
CHEMICAL COMPOSITION
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COAL LIQUEFACTION
DEHYDROGENATION
DISTILLATION
EVALUATION
FUELS
GASOLINE
HIGH TEMPERATURE
HYDROCARBONS
LIQUEFACTION
MEDIUM PRESSURE
ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
PRODUCTION
SEPARATION PROCESSES
THERMODYNAMIC PROPERTIES
TOLUENE
TRANSITION TEMPERATURE
YIELDS