Patent · US Expired

Method and apparatus for the treatment of radioactive evaporator concentrates from nuclear plants

US6218592A · kind A · utility

0Cited by

2References

13Claims

0Family size

Assignee

Kernkraftwerke Gundremmingen Betriebsgesellschaft mbH · DE

Inventors

Manfred Lasch · Hamburg, DE
Udo Krumpholz · Gundremmingen, DE

Key dates

Filing date	Mar 17, 2000
Grant date	Apr 17, 2001
Priority date	—
Expiry date	Mar 17, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S159/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method for the treatment of radioactive evaporator concentrates from the evaporation system of nuclear plants comprises the steps of PA1 (a) freeing the evaporator concentrates from undissolved components, PA1 (b) crystallizing the sodium sulfate contained in the evaporator concentrates as Glauber's salt (Na.sub.2 SO.sub.4.10 H.sub.2 O) on an immersion cooler, PA1 (c) recrystallizing the Glauber's salt deposited on the immersion cooler, PA1 (d) optionally, repeating the recrystallization step (c) once or several times, PA1 (e) separating essentially inactive sodium sulfate from the process, and PA1 (f) recycling the depleted evaporator concentrates of step (a) to the evaporation system.

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