Utilization of coal as a source of chemicals
- University of Mahallesi, Trabzon (Turkey)
Coal consists carbon-based substances can be used as a source of specialty aromatic chemicals and aliphatic chemicals. Four widespread processes allow for making chemicals from coals: gasification, liquefaction, direct conversion, and co-production of chemicals and fuels along with electricity. Coal is gasified to produce synthesis gas (syngas) with a gasifier which is then converted to paraffinic liquid fuels and chemicals by Fischer-Tropsch synthesis. Liquid product from coal gasification mainly contains benzene, toluene, xylene (BTX), phenols, alkylphenols, and cresol. Methanol is made using coal or syngas with hydrogen and carbon monoxide in a 2 to 1 ratio. Coal-derived methanol has many preferable properties as it is free of sulfur and other impurities. Syngas from coal can be reformed to hydrogen. Ammonium sulfate from coal tar by pyrolysis can be converted to ammonia. The humus substances can be recovered from brown coal by alkali extraction.
- OSTI ID:
- 20906012
- Journal Information:
- Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, Vol. 29, Issue 8; ISSN 1556-7036
- Country of Publication:
- United States
- Language:
- English
Similar Records
DEVELOPMENT OF ALTERNATIVE FUELS AND CHEMICALS FROM SYNTHESIS GAS
Direct catalytic conversion of methane and light hydrocarbon gases. Quarterly report No. 1, October 16, 1986--January 15, 1987