초록 ▼

A method and composition are provided for transporting coarse particles of coal in a dense liquid CO2 media. The dense media contains fine particles of densifying material such as coal or magnetite which form a suspension in the liquid CO2. The suspension is capable of supporting large particles of

A method and composition are provided for transporting coarse particles of coal in a dense liquid CO2 media. The dense media contains fine particles of densifying material such as coal or magnetite which form a suspension in the liquid CO2. The suspension is capable of supporting large particles of coal for transportation in a liquid CO2 slurry pipeline. Use of the dense media allows the pumping of the coarse coal particles at slower velocities than if the fine densifying particles were not present.

대표청구항 ▼

A method for the pipeline transportation of coarse particles of coal which are too large to form a stable slurry in liquid CO2, comprising the steps of: (a) slurrying coarse particles of coal up to ¾-inch in diameter with a dense liquid CO2 media in an amount of 40-60% of coarse coal particles with

A method for the pipeline transportation of coarse particles of coal which are too large to form a stable slurry in liquid CO2, comprising the steps of: (a) slurrying coarse particles of coal up to ¾-inch in diameter with a dense liquid CO2 media in an amount of 40-60% of coarse coal particles with respect to the dense media; said dense media formed by incorporating fine coal particles in liquid CO2 in an amount of 30-50% with respect to the liquid CO2; said fine particles capable of forming a stable suspension in liquid CO2 whereby the coarse particles may be transported in the dense media by means of a pipeline; (b) introducing the slurry into a pipeline; and (c) flowing the slurry through the pipeline.