Abstract
Publisher Summary This chapter discusses the hydrocracking reactivities of point of Ayr coal extracts from a Flowing-Solvent Reactor (FSR), a mini-bomb, and a pilot plant. The structures of coal liquefaction extracts are known to change considerably with reaction conditions used during the extraction process. The economics of coal liquefaction processes depend, among other factors, on the relative ease with which heavier coal extracts are converted to saleable products. Changes in the hydrocracking reactivity of coal extracts are examined in terms of structural modifications induced by their previous process histories. The extract is prepared in a FSR, where the secondary reactions of extracts are suppressed by rapid removal from the reaction zone. Point of Ayr coal liquefaction extracts from three sources is included in the chapter: a bench scale flowing-solvent reactor using tetralin as vehicle, 10 and 60 minute mini-bomb extractions in tetralin, and a sample of extract from the digester of the British Coal Liquefaction Pilot Plant at point of Ayr.
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