Pretreatment of coal during transport

Details Pretreatment of coal during transport Pretreatment of coal during transport

1974-09-05

1977-04-19

Wolk, Morris O.

Distillation: processes, thermolytic

And surface treating material to reduce or prevent...

48210, C10B 5708, C10L 900

Patent

active

040186547

ABSTRACT:
Many available coals are "caking coals" which possess the undesirable characteristic of fusing into a solid mass when heated through their plastic temperature range (about 400.degree. C.) which temperature range is involved in many common treatment processes such as gasification, hydrogenation, carbonization and the like. Unless the caking properties are first destroyed, the coal cannot be satisfactorily used in such processes. A process is disclosed herein for decaking finely divided coal during its transport to the treating zone by propelling the coal entrained in an oyxgen-containing gas through a heated transport pipe whereby the separate transport and decaking steps of the prior art are combined into a single step.

REFERENCES:
patent: 2577632 (1951-12-01), Roetheli
patent: 2805189 (1957-09-01), Williams
patent: 3337417 (1967-08-01), Albright
patent: 3444046 (1969-05-01), Harlow
patent: 3884649 (1975-05-01), Matthews
patent: 3927996 (1975-12-01), Knadsen

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