
Fossil fuel derivatives with reduced carbon. Phase I final report
Author(s) -
Elliot B. Kennel,
John W. Zondlo,
T.J. Cessna
Publication year - 1999
Language(s) - English
Resource type - Reports
DOI - 10.2172/770830
Subject(s) - coal , endothermic process , fossil fuel , raw material , waste management , carbon neutral fuel , natural gas , hydrogen , pyrolysis , carbon fibers , greenhouse gas , hydrogen production , clean coal , chemistry , environmental science , materials science , syngas , adsorption , organic chemistry , engineering , geology , oceanography , composite number , composite material
This project involves the simultaneous production of clean fossil fuel derivatives with reduced carbon and sulfur, along with value-added carbon nanofibers. This can be accomplished because the nanofiber production process removes carbon via a catalyzed pyrolysis reaction, which also has the effect of removing 99.9% of the sulfur, which is trapped in the nanofibers. The reaction is mildly endothermic, meaning that net energy production with real reductions in greenhouse emissions are possible. In Phase I research, the feasibility of generating clean fossil fuel derivatives with reduced carbon was demonstrated by the successful design, construction and operation of a facility capable of utilizing coal as well as natural gas as an inlet feedstock. In the case of coal, for example, reductions in CO{sub 2} emissions can be as much as 70% (normalized according to kilowatts produced), with the majority of carbon safely sequestered in the form of carbon nanofibers or coke. Both of these products are value-added commodities, indicating that low-emission coal fuel can be done at a profit rather than a loss as is the case with most clean-up schemes. The main results of this project were as follows: (1) It was shown that the nanofiber production process produces hydrogen as a byproduct. (2) The hydrogen, or hydrogen-rich hydrocarbon mixture can be consumed with net release of enthalpy. (3) The greenhouse gas emissions from both coal and natural gas are significantly reduced. Because coal consumption also creates coke, the carbon emission can be reduced by 75% per kilowatt-hour of power produced