초록 ▼

A continuous process for blending coal with a water immiscible liquid produces a uniform, pumpable slurry. Pulverized raw feed coal and preferably a coal derived, water immiscible liquid are continuously fed to a blending zone (12 and 18) in which coal particles and liquid are intimately admixed and

A continuous process for blending coal with a water immiscible liquid produces a uniform, pumpable slurry. Pulverized raw feed coal and preferably a coal derived, water immiscible liquid are continuously fed to a blending zone (12 and 18) in which coal particles and liquid are intimately admixed and advanced in substantially plug flow to form a first slurry. The first slurry is withdrawn from the blending zone (12 and 18) and fed to a mixing zone (24) where it is mixed with a hot slurry to form the pumpable slurry. A portion of the pumpable slurry is continuously recycled to the blending zone (12 and 18) for mixing with the feed coal.

대표청구항 ▼

A continuous process for blending pulverized coal with a water immiscible liquid to form a pumpable slurry, which comprises continuously feeding pulverized raw feed coal and a water immiscible liquid to a blending zone in which coal particles and liquid are intimately admixed and advanced in substan

A continuous process for blending pulverized coal with a water immiscible liquid to form a pumpable slurry, which comprises continuously feeding pulverized raw feed coal and a water immiscible liquid to a blending zone in which coal particles and liquid are intimately admixed and advanced in substantially plug flow such that the resulting slurry passes through said blending zone without substantial backmixing to form a first slurry; withdrawing said first slurry from said blending zone and passing it to a separate feed mixing zone where said first slurry is mixed with a hot, second slurry to form a pumpable third slurry of generally uniform consistency; and withdrawing said pumpable third slurry from said feed mixing zone and continuously recycling a first portion of said pumpable third slurry directly to said blending zone to provide at least a portion of the said water immiscible liquid and passing a second portion of said pumpable third slurry to a preheating zone of a coal liquefaction process.