Process for removing solvents from bulk material

Details Process for removing solvents from bulk material Process for removing solvents from bulk material

1987-11-13

1989-04-04

Bascomb, Wilbur

Cleaning and liquid contact with solids

Processes

Including regeneration, purification, recovery or separation...

134 30, 134 37, 34 10, 34 37, 159 163, 159 251, 159DIG3, 202175, 202234, 203 92, 203 95, B08B 704, B01D 338

Patent

active

048182974

ABSTRACT:
To remove solvents such as alcohol from bulk material the solvent-laden bulk material is intensively loosened mechanically into a virtual fluidized bed through which a liquid in gaseous phase such as steam is passed so that the solvent having a lower boiling point than water is expelled from the bulk material and is evacuated with excess steam while at least part of the steam condenses on the particles of the bulk material which thereby is humidified. The solvent expelled from the bulk material is separated from the steam and can be used again. The treatment is carried out in a closed vessel in which the bulk material and the steam are moved relative to each other.

REFERENCES:
patent: 591041 (1897-10-01), Harrison et al.
patent: 832863 (1906-10-01), Kerr
patent: 1127452 (1915-02-01), Koch
patent: 1538265 (1925-05-01), Arnold
patent: 1609712 (1926-12-01), Guignard
patent: 2459951 (1949-01-01), Metzner
patent: 2832663 (1958-04-01), Drelich
patent: 2991298 (1961-07-01), Raffaeta
patent: 3169537 (1965-02-01), Fuhring
patent: 3511843 (1970-05-01), Lewis
patent: 4048007 (1977-09-01), Valle-Riestra

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