coal liquefaction approach
Direct Coal Liquefaction - National Energy Technology LaboratoryAs the following discussion of Direct Coal Liquefaction (DCL) explains, the fundamental process approach of DCL does not involve gasification at all. Therefore.coal liquefaction approach,coal liquefaction approach,Coal LiquefactionCoal Liquefaction. Very expensive; Liquefaction attractive for transportation fuel; Indirect liquefaction . Two Basic Approaches To Convert Coal To A Liquid Fuel.