Method and apparatus for washing crystallizers
Abstract
Abstract A METHOD FOR REMOVING SOLUBLE DEPOSITS ON CRYSTALLIZER SURFACES IS DISCLOSED WHICH INCLUDES THE STEPS OF (1) SIMULTANEOUSLY DRAINING MAGMA FROM THE CRYSTALLIZER, SEPARATING THE SOLIDS FROM THE LIQUID PHASE OF THE MAGMA, RETURNING THE LIQUID TO THE CRYSTALLIZER TO MAINTAIN THE LIQUID LEVEL, AND CHARGING THE SOLIDS TO A HOLDING TANK; (2) THEN DRAINING THE LIQUID REMAINING IN THE CRYSTALLIZER AND CHARGING IT TO THE HOLDING TANK; (3) NEXT WASHING OUT THE CRYSTALLIZER WITH A SUITABLE SOLVENT FOR THE SOLUBLE DEPOSITS AND DRAINING THE CRYSTALLIZER; (4) THEREAFTER SIMULTANEOUSLY DRAINING THE SUSPENSION RETAINED IN THE HOLDING TANK FROM THE TANK, SEPARATING THE SOLIDS FROM THE LIQUID, FEEDING THE LIQUID TO THE CRYSTALLIZER AND RETURNING THE SOLIDS TO THE HOLDING TANK; AND (5) FINALLY RETURNING THE SOLIDS REMAINING IN THE HOLDING TANK TO THE BOTTOM OF THE CRYSTALLIZER, WHEREBY THE CRYSTALLIZER''S CONTENTS ARE SUBSTANTIALLY RESTORED TO AN ON-STREAM CONDITION. APPARATUS FOR CARRYING OUT THIS PROCESS IS ALSO DESCRIBED.
Inventors
- 👤 David L Brandfield
- 👤 Robert L Curfman
- 👤 Richard Heine
- 👤 Kurt W Hitsch
Bibliographic Details
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