Patent · US Active

APC process parameter estimation

US7862771B2 · kind B2 · utility

28Cited by

34References

7Claims

0Family size

Assignee

ALSTOM Technology Ltd · CH

Inventors

Scott A. Boyden · Bellingham, US
Stephen Piche · Austin, US

Key dates

Filing date	Dec 3, 2004
Grant date	Jan 4, 2011
Priority date	—
Expiry date	Oct 22, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T436/12
WIPO fieldControl
WIPO sectorInstruments

Abstract

A virtual analyzer is provided to estimate either an attribute of a reactant applied during performance of, or an amount of a reactant exhausted by, a process having multiple process parameters (MPPs) that is performed to control an amount of a pollutant emitted into the air. The virtual analyzer includes an interface which receives signals corresponding to attributes of the MPPs. If the process is a wet flue gas desulfurization (WFGD) process, the signals include a signal corresponding to a measured pH level of the applied reactant. If the process is a selective catalytic reduction (SCR) process, the signals include a signal corresponding to a measured amount of the reactant exhausted by the process.

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