Apparatus for after-treating polyolefin powder

Details Apparatus for after-treating polyolefin powder Apparatus for after-treating polyolefin powder

1984-11-14

1986-05-20

Schwartz, Larry I.

Drying and gas or vapor contact with solids

Apparatus

Stationary receptacle or tube with agitator or conveyor

34183, F26B 1720

Patent

active

045892156

ABSTRACT:
Devolatilization of sticky polyolefin powder and deactivation of catalyst residue can be carried out efficiently and sufficiently without the need for accompanying facilities commonly used in the treatment of powdery products in an apparatus comprising (a) a horizontal cylindrical body, (b) a stirrer provided with one revolving shaft and a plurality of specified stirring blades (c) an inlet pipe for introducing untreated polyolefin power and heating gas, (d) a variable barrage for controlling the holding amount of polyolefin powder insides of said horizontal cylindrical body, (e) an outlet way for discharging after-treated polyolefin powder and gas, (f) inlet pipes for heating gas having a pipe for feeding an after-treating agent, and (g) indirect heating mean.

REFERENCES:
patent: 66487 (1867-07-01), Gregg
patent: 3247021 (1966-04-01), Steele et al.
patent: 3425135 (1969-02-01), Lang-Setmo et al.
patent: 4276701 (1981-07-01), Takacs et al.
patent: 4420892 (1983-12-01), Braun et al.

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