Patent · US Active

Device and method for evaporating a reactant

US8357332B2 · kind B2 · utility

1Cited by

3References

8Claims

0Family size

Assignee

EMITEC Gesellschaft fuer Emissionstechnologie mbH · DE

Inventors

Rolf Brück · Bensberg, DE
Peter Hirth · Rösrath, DE
Thomas Härig · Eppstein, DE
Marc Brugger · Neunkirchen, DE

Key dates

Filing date	Apr 2, 2009
Grant date	Jan 22, 2013
Priority date	—
Expiry date	Jul 20, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A device for evaporating at least one of the following reactants: a reducing agent precursor solution and a reducing agent precursor, includes at least one electrically heatable heating zone having at least one electrically operable heating element with a heating resistor that is self-regulated about a significant temperature. A method and the device for evaporating a reactant allow a simple control of an evaporation process, especially of a urea/water solution, to provide a reducing agent, especially in an SCR process. The heating resistors have a significant temperature that corresponds to a control temperature of the heating resistor. The need for additional control electronics can be removed by adjusting a correspondingly steep curve within a range.

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