Cleaning and liquid contact with solids – Processes – Work handled in bulk or groups
Patent
1990-08-23
1992-09-01
Pal, Asok
Cleaning and liquid contact with solids
Processes
Work handled in bulk or groups
134 32, 134 42, B08B 900
Patent
active
051435543
ABSTRACT:
A process for washing a powdery and/or granular resin involves bringing the powdery and/or granular resin into contact with a washing liquid in a counterflow fashion in a tubular body with a plurality of static mixing elements disposed continuously in series, thereby removing impurities adhering to the powdery and/or granular resin and producing the powdery and/or granular resin with a less content of impurities. A washing device for use with the washing process contains a tubular body in which the static mixing elements are disposed continuously in series, and this construction is simpler than conventional ones and does not require a stirring power and mechanism to remove the impurities from the powdery and/or granular resin.
REFERENCES:
patent: 2519781 (1950-08-01), Morris
patent: 3539539 (1970-11-01), Goetzke
patent: 3849196 (1974-11-01), Halloway et al.
patent: 4062697 (1977-12-01), Egli et al.
patent: 4421874 (1983-12-01), Seefluth
patent: 4526684 (1985-07-01), Seefluth
Static Mixing Handbook, published Jun. 1973.
Adhasion, vol. 16, No. 9, 1972, "Statische Mischer".
Automation, vol. 19, No. 2, 1972 "Motionless mixers".
Koyama Yoshinari
Shirota Daigo
Idemitsu Petrochemical Company Limited
Pal Asok
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