Process for production of value-added coproducts from coal and other carbonaceous materials

Process for production of value-added coproducts from coal and other carbonaceous materials

Coal is heated between about 95 DEG and 250 DEG C. to evaporate moisture, but not volatile hydrocarbons. The dried coal is heated to a temperature between about 400 DEG and 700 DEG C. to recover volatile hydrocarbons and to form char, the char is treated with hydrogen at a temperature between about...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: JHA, MAHESH C, WOESSNER, PAUL W
Format: Patent
Sprache:eng
Schlagworte:
ADHESIVES
CHEMISTRY
COMPOUNDS THEREOF
DYES
INORGANIC CHEMISTRY
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
NON-METALLIC ELEMENTS
PAINTS
POLISHES
PREPARATION OF CARBON BLACK
TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES
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Beschreibung
Zusammenfassung:Coal is heated between about 95 DEG and 250 DEG C. to evaporate moisture, but not volatile hydrocarbons. The dried coal is heated to a temperature between about 400 DEG and 700 DEG C. to recover volatile hydrocarbons and to form char, the char is treated with hydrogen at a temperature between about 700 DEG and 1000 DEG C. to form methane, and the methane is decomposed to form pure carbon and hydrogen, which is recycled to treat the char.