PROCEDURE FOR PRESSURE CARBONIZATION AND PRESSURE GASIFICATION OF CRUDE LIGNITE

摘要

Granular crude brown coal or lignite is introduced into a pressure steaming chamber at a pressure above 1 MPa, where it is partially dehydrated by means of an evaporation agent, e.g. steam, pressure carbonized, uniformly shrunk and heated substantially uniformly to a temperature above 423 DEG K it is then conveyed without expansion to a pressure of less than 0.5 MPa into a pressure degasification and pressure gasification chamber, in which it will undergo further non-destructive drying as a result of its heat content, the pressure degasification and pressure gasification of the treated brown coal or lignite being subsequently effected.