Hydropyrolysis-gasification of carbonaceous material
This patent describes a hydropyrolysis-gasification process for obtaining liquids and gases from carbonaceous material. It comprises: treating the carbonaceous material with an amount of one or more gasification catalysts selected from the alkali and alkaline-earth metals, and optionally one or more hydrogenation-catalyst selected from the group consisting of oil-soluble and water-soluble salts of a metal selected from Groups VIB, VIIB, and VIII of the Periodic Table of the Elements; contacting the treated carbonaceous material, in the absence of liquid solvent or donor solvent, with an effective amount of hydrogen, for an effective time, below 500{degrees}C., and obtaining a mixture of liquids, hydrocarbon gases and char; recovering the liquids and hydrocarbon gases, wherein the gases contains less than 2 wt.% methane based on the weight of the carbonaceous material; and gasifying the char in the presence of steam at a temperature from about 500{degrees} C. to about 900{degrees} C., the char being at least 50 wt. % of the carbonaceous material.
- Assignee:
- Exxon Research and Engineering Co., Florham Park, NJ (United States)
- Patent Number(s):
- US 5055181; A
- Application Number:
- PPN: US 7-284202
- OSTI ID:
- 5607749
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010404* -- Coal
Lignite
& Peat-- Gasification
010405 -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
CHARS
CHEMICAL REACTIONS
COAL GAS
COAL GASIFICATION
COAL LIQUEFACTION
DECOMPOSITION
FLASH HYDROPYROLYSIS PROCESS
FLUIDS
GASES
GASIFICATION
LIQUEFACTION
PERFORMANCE
PYROLYSIS
PYROLYSIS PRODUCTS
THERMOCHEMICAL PROCESSES