METHOD TO IMPROVE THE EFFICIENCY OF REMOVAL OF LIQUID WATER FROM SOLID BULK FUEL MATERIALS

摘要

The invention provides methods to efficiently reduce the water concentration of raw solid fuels, including low rank coals such as brown coal, lignite, subbituminous coal, and other carbonaceous solids. Efficiently drying these materials at low temperatures significantly reduces greenhouse gas emissions and allows the production of low-rank coals for gasification and liquifaction.

主权项

1. A method of treating a solid carbonaceous material comprising:
compacting a solid carbonaceous material under a force of at least about 5000 lb/in2 to form a compacted carbonaceous material; and, contacting the compacted carbonaceous material with a working fluid, wherein the working fluid causes evaporative drying of the compacted carbonaceous material to form a dried carbonaceous material.