Patent · US Expired

Device for exchanging a die plate of a prilling tower and method for the automatic exchange

US6695991B1 · kind B1 · utility

1Cited by

1References

12Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Rolf Lanze · Krefeld, DE
Günter Holdenried · Leichlingen, DE
Rainer Neumann · Krefeld, DE
Frieder Heydenreich · Düsseldorf, DE
Tony van Osselaer · Krefeld, DE

Key dates

Filing date	Jul 25, 2001
Grant date	Feb 24, 2004
Priority date	—
Expiry date	Jul 25, 2021

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C39/16
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A device for exchanging a die plate of a molten bisphenol A prilling tower is described. The device comprises: (a) at least two die plates; (b) a guide which is in contact with the die plates; and (c) a drive mechanism, wherein the drive mechanism moves the die plates linearly and serially between an operating position and an exchange position along the guide. Also described is a process of automated operation of the device at the top of a bisphenol A prilling tower.

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