Process for producing synthetic caking coal and binder pitch
AssigneeNippon Mining Co., Ltd.
InventorsHiromi Ozaki, Mamoru Yamane, Hachio Kodama, Haruo Yoshika
Life of this patent
Estimating the term…
Abstract
A raw synthetic caking coal having a volatile matter content of 20 - 70%, H/C (atomic ratio) of 0.60 - 1.20 and a maximum fluidity of greater than 40 ddpm is produced by coking heavy hydrocarbons. Synthetic caking coal having a volatile matter content of 20 - 40%, H/C (atomic ratio) of 0.60 - 0.75, a maximum fluidity of greater than 40 ddpm and a Free-Swelling-Index of greater than 3 is produced from the raw synthetic caking coal by stripping said raw synthetic caking coal with steam or light hydrocarbons.
Claims6
A raw synthetic caking coal prepared by thermally cracking a heavy hydrocarbon selected from the group consisting of petroleum atmospheric oil, vacuum residual oil, cracked residual oil, catalytically cracked oil, and propane asphalt at a temperature of from 380.degree. to 500.degree. C, which composition is characterized by a volatile matter content of from 25.2 to 60.7 percent, an atomic ratio of H/C of 0.60 to about 1.20 and a maximum fluidity greater than 40 ddpm.
A raw synthetic caking coal prepared by thermally cracking a heavy hydrocarbon selected from the group consisting of petroleum atmospheric oil, vacuum residual oil, cracked residual oil, catalytically cracked oil, and propane asphalt at a temperature of from 380.degree. to 500.degree. C, which composition is characterized by a volatile matter 25.2 to 60.7 percent, an atomic ratio of H/C of 0.60 to about 0.75, a maximum fluidity greater than 40 ddpm and a free-swelling index greater than 2.
A raw synthetic caking coal prepared by thermally cracking a heavy hyro carbon selected from the group consisting of petroleum atmospheric oil, vacuum residual oil, cracked residual oil, catalytically cracked oil, and propane asphalt at a temperature of from 380.degree. to 500.degree. C, which composition is characterized by a volatile matter content of from 25.2 to 60.7 percent, an atomic ratio of H/C of 0.60 to about 1.20 and a maximum fluidity greater than 40 ddpm and 10 to 90 wt. percent of pyridine soluble components having an aromaticity factor, fa, of 0.5 to 1.0.
A raw synthetic caking coal prepared by thermally cracking a heavy hydrocarbon selected from the group consisting of petroleum atmospheric oil, vacuum residual oil, cracked residual oil, catalytically cracked oil, and propane asphalt at a temperature of from 380.degree. to 500.degree. C, which composition is characterized by a volatile matter of from 25.2 to 60.7 percent, an atomic ratio of H/C of 0.60 to about 0.75, a maximum fluidity greater than 40 ddpm and a free-swelling index greater than 2 and 10 to 50 wt. percent of pyridine soluble components having an aromaticity factor, fa, of 0.70 to 1.0.
Dependencies are inferred from the claim text.