Method and apparatus for preparing empty chemical containers for

Details Method and apparatus for preparing empty chemical containers for Method and apparatus for preparing empty chemical containers for

1976-10-22

1978-09-05

Fisher, Richard V.

Cleaning and liquid contact with solids

Processes

Including regeneration, purification, recovery or separation...

15302, 15304, 100DIG2, 134 17, 134 21, 134 24, 134166R, B08B 310

Patent

active

041117166

ABSTRACT:
A method and system for carrying out the method, relating to mixing of solutions, wherein the base liquid in a tank is circulated through an endless circuit while the chemical is gradually introduced into the circulating flow base liquid to achieve thorough mixing. A chemical is withdrawn under valve control into a measuring receptacle prior to mixing same with the base liquid. Provision is included for rinsing the chemical source container, the resulting rinse solution being automatically introduced into the tank, leaving the source container in condition to meet legal requirements for disposal. To simplify disposal of rinsed containers and discourage re-use thereof, a feature of the method and system involves means creating a differential pressure between the outside and inside of the containers for collapsing the containers. A novel multiple valve assembly enables all features to be embodied in a simplified and condensed system.

REFERENCES:
patent: 1492922 (1924-05-01), Knight
patent: 2240364 (1941-04-01), Kimball et al.
patent: 3342377 (1967-09-01), Peredy
patent: 3776408 (1973-12-01), Wald

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