Review on the Development and Present Status of EDS Coal Liquefaction Process

Abstract

To conserve energy and natural resources effectively, the role played by petroleum in providing energy sources and chemical raw materials must be increasingly assumed by coal which is considered abundant as compared to petroleum.
Coal as solid can effectively be transformed into gas or liquid by gasification or liquefaction, respectively.Among them direct liquefaction is regarded as attractive since the coal derived liquid can be used fuel oil, gasoline blend stock, naphtha and chemicals which have been derived entirely from petroleum.
This paper reviews the EDS process with respects to its process characteristics, research background and present status, and learning from large scale pilot plant operations.