Patent · US Expired

Process and apparatus for drying a solid-liquid mixture

US5775004A · kind A · utility

9Cited by

8References

26Claims

0Family size

Assignee

Andritz-Patentverwaltungs-Gesellschaft m.b.H. · AT

Inventors

Klaus Steier · Munich, DE
Stephan Wild · Karlstadt, DE
Erwin Brunnmair · Graz, AT

Key dates

Filing date	Sep 24, 1996
Grant date	Jul 7, 1998
Priority date	—
Expiry date	Sep 24, 2016

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF26B2200/18
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A process and an apparatus is disclosed for drying sludge or other materials, more specifically, sewage sludge, in which a mixture of base material and wet material is introduced to a drier and passing hot gas or hot air passed over the mixture. The process and apparatus by regulating the feed rate of the wet material (wet sludge) in relation to the exit temperature of the hot gas or hot air from the drier. In embodiments, the feed rate of material is adjusted to maintain a substantially constant temperature of the gas.

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