The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 19, 2001
Filed:
Dec. 17, 1998
Jacobus Petrus Roodenrijs, Sint Michielsgestel, NL;
Abstract
The invention relates to a crystallization apparatus and to a method for crystallizing a liquid from a solution, a mixture of liquids or a suspension. The apparatus comprises a growth zone in a vertically positioned tank, which growth zone is positioned below a nucleation zone. Via a delivery line the seed crystals are fed from the nucleation zone to the bottom end of the growth zone. In the growth zone the ice slurry slowly moves in a vertical direction at such a low velocity that heavier particles are able to precipitate and to be discharged at the bottom end. Preferentially, the nucleation zone comprises a vacuum apparatus for effecting a reduction in pressure in the nucleation zone to between 10,and 7·10,bar. Using the apparatus according to the present invention it is possible for waste water and effluent to be concentrated in a simple manner, clogging of, for example, filters owing to the settling of solid particles being prevented.