Patent · US Expired

Method of melting raw materials

US4940478A · kind A · utility

10Cited by

8References

13Claims

0Family size

Assignee

Grunzweig & Hartmann AG · DE

Inventors

Wilfried Naber · Ladenburg, DE
Heinz-Jurgen Ungerer · Viernheim, DE
Klaus Sistermann · Römerberg, DE

Key dates

Filing date	Sep 8, 1988
Grant date	Jul 10, 1990
Priority date	—
Expiry date	Sep 8, 2008

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P40/50
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A process of melting silicate raw materials includes the steps of using the tank exhaust gases to heat the combustion air, using the tank exhaust gases to preheat a mixture of raw materials, removing acid gaseous aggressive media from the tank exhaust gases, then using the tank exhaust gases to preheat the combination air. Because the acid gaseous aggressive media are removed from the tank exhaust gases before the tank exhaust gases are used to preheat the combustion air, more heat can be withdrawn from the tank exhaust gases than was heretofore possible, since there is no danger of acid condensation even when the tank exhaust gases are cooled to near ambient temperature.

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