Heating – Processes of heating or heater operation – Including passing – treating or conveying gas into or through...
Patent
1981-12-30
1984-01-03
Camby, John J.
Heating
Processes of heating or heater operation
Including passing, treating or conveying gas into or through...
34 25, 208 11R, F27B 1500, F26B 300, C10G 100
Patent
active
044240210
ABSTRACT:
In this process carbonaceous materials in a wide range of particles size are heat treated in a substantially vertical gravity retort through which heated gasses flow upwardly. The particles are graded by size and fed into the retort with the largest particles being inserted into an upper portion of the retort, and in preferred embodiments, with progressively smaller particles being inserted into progressively lower portions of the retort so that the residence time of each of the particles in the retort is substantially directly proportional to the size and mass of the particles. This process allows high throughput of the material while reducing the amount of entrained small particles which flow up with the heated gas, thus reducing pressure drop in the retort system.
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Camby John J.
Hummel Jack L.
Marathon Oil Company
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