Patent · US Expired

Process for producing crystals

US7056356B2 · kind B2 · utility

4Cited by

1References

8Claims

0Family size

Assignee

BASF SE

Inventors

Peter Mark Allen · Neustadt, DE
Christoph Gahn · Speyer, DE
Christopher William Rieker · Ludwigshafen, DE
Heinz-Walter Schneider · Ludwigshafen, DE
Robert Karl Wagner · Meyrin, CH

Key dates

Filing date	May 21, 2001
Grant date	Jun 6, 2006
Priority date	—
Expiry date	Jul 7, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T117/10
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

An apparatus and a process for crystallizing substances from solutions or dispersions containing these substances, in a crystallizer containing a classifying zone (3), comprise The novel apparatus has the special feature that a line (8) connecting the outer and inner circulation systems (1; 2) to one another and intended for transporting (recycling) dispersion and/or a line (8) for transporting (recycling) dispersion are additionally present, in which both its entrance and its exit are connected to the inner circulation system (1).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.