Commercial application of coal combustion by-products has been extensively studied, but has not achieved utilization nation-wide that exceeds 25 percent. This is due in part to the presence of unburned carbon from NO_x control. This paper focuses on the separation of "high-value-added products...
T. Watanabe, and other representatives of the Japanese school investigated volcanogenic ore formation. Contributions to the geology of coal were made by W. Gothan, H. Potonié, and R. Tiessen. W. Gussow, H. Höfer, and J. White contributed to the geology of petroleum and natural gases....
Researchers are using lasers to turn petroleum byproducts into useful stuff. Tar and pitch, usually burned as waste, could be studied for more uses.
The materials can be virtually any kind of heavy hydrocarbon, many of which exist in great abundance as waste products from petroleum production or chemical processing. “Essentially what we’re looking for is any material that it’s heavy in aromatics, meaning heavy hydrocarbons that people ...
Credit: Egan Jimenez, Office of Communications/Princeton University A congressionally mandated study led by Princeton's Emily Carter has released a comprehensive roadmap for research and policies to enable large-scale recycling of carbon pollution into high-demand, useful products like fuels and constru...
a同时,材料科学和新型材料技术的发展,使得很多产品可以实现并具备这个功能。 At the same time, the materials science and the new material technology development, causes very many products to be possible to realize and to have this function.[translate] ...
aCoal tar was originally a waste product, dumped willy-nilly in streams, rivers, ponds, and on land adjacent to manufactured gas plants.“Free”coal tar, as a potential raw material for useful products, became the cornerstone of the chemical industry by first being transformed to creosote, ...
The present invention is directed to the conversion of biomass wastes including municipal solid waste, sewage sludge, plastic, tires, agricultural residues and the like, as well as coal, to useful products such as hydrogen, ethanol and acetic acid. The overall process includes the steps of gas...
C.The products had even more uses. D.The products became popular very quickly. 【5】The biggest advantage of Post-it Notes is that . A.it can leave no sign when removed B.it is very cheap to use C.it is good to write notes on D.it is very thin and beautiful ...
used just as they are, making use of the wide variety of properties to be found in the different materials—types of coal, petroleum steam cracked tar, and mesophase pitch, most of which are either byproducts that typically need to be disposed of or fuels that are rapidly being phased out...