Monitoring coal extraction

Details Monitoring coal extraction Monitoring coal extraction

C - Chemistry, Metallurgy

10

G

150/19, 196/5.9

C10G 1/04 (2006.01) G01N 25/14 (2006.01) G01N 33/22 (2006.01)

Patent

CA 1215306

Case 4525/CAN ABSTRACT OF THE DISCLOSURE "MONITORING COAL EXTRACTION" The amount of donatable hydrogen in a liquid hydrogen donor solvent extraction of coal process may be assessed by diluting the solvent with an aromatic liquid diluent, carrying out a test extraction of the coal under standard conditions, determining the extraction yield and, preferably, comparing the yield with yields of calibration tests. The method is reliable and quicker than known methods of characterising solvents, and may be used to control coal extraction processes.

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