Conveyors: fluid current – With diverse power-driven conveyor – Rotary
Patent
1982-05-24
1984-12-18
Nase, Jeffrey V.
Conveyors: fluid current
With diverse power-driven conveyor
Rotary
165 65, B65G 5348
Patent
active
044888384
ABSTRACT:
An improved method and apparatus for feeding a crushed or pulverized solid supply material such as coal or the like, from a supply source under ambient pressure into a reactor or the like which is under significantly higher pressure; such as in connection with a hydrogenation/oxidation process producing so-called "fuel" or "synthesis" gases. A liquefied gas such as carbon dioxide or the like, is fed under pressure into a moving supply of such materials (as may be contained in a closed casing screw conveyor/extruder or the like) in order to form a slurry which is suitable to be pumped into the receiver against its superior pressure. Process temperatures are so controlled that as the input liquefied gas component of the slurry migrates toward the lower pressure feed inlet end of the conveyor in response to the superior pressure at the discharge end of the conveyor, it solidifies into solid particles which intermingle with and substantially fill the interstices between the supply material particles. There is thus provided a pressure differential "block" which opposes the higher reactor pressure such as would otherwise cause gas blow-backs through the supply material system; and therefore the need for intermediate pressure-lock devices is obviated.
Ancillary means for efficient supply/recovery/reuse of the slurrying gas and heat transfer supply liquids involved in the process are also disclosed.
REFERENCES:
patent: 1798857 (1931-03-01), Tyler
patent: 3225821 (1965-12-01), Sollich
patent: 3309736 (1967-03-01), Rodenacker
patent: 4206610 (1980-06-01), Santhanam
Nase Jeffrey V.
Textron Inc.
Williams L. E.
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