Patent · US Expired

Process and a device for separating a solid residue from its solution in a stirred bed of material

US5609735A · kind A · utility

6Cited by

9References

7Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Hartmut Hetzel · Cologne, DE
Dieter Grenner
Wolfgang Ebner · Dormagen, DE
Klaus Biskup · Leverkusen, DE

Key dates

Filing date	Aug 22, 1995
Grant date	Mar 11, 1997
Priority date	—
Expiry date	Aug 22, 2015

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S203/90
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A process and a device are described for separating a solid residue, after separation, from a solution of the residue in evaporable materials and/or solvents with the addition of up to 20% by weight of high-boiling hydrocarbons that are inert under evaporation conditions of the evaporable materials, heating the mixture to evaporation temperature under vacuum, whereby the evaporable materials evaporate, are drawn off and condensed, and the residue is obtained as a free-flowing solid, the residue solution being introduced onto a stirred bed of granular solid material kept at the evaporation temperature.

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