Patent · US Expired

System for monitoring trace gaseous ammonia concentration in flue gases

US4471220A · kind A · utility

12Cited by

2References

3Claims

0Family size

Assignee

Exxon Research and Engineering Company · US

Inventors

Bruce N. Perry · Maplewood, US
Alexander Stein · Berlin, DE

Key dates

Filing date	Dec 21, 1981
Grant date	Sep 11, 1984
Priority date	—
Expiry date	Dec 21, 2001

Classification

Technology area (CPC G)Physics
CPC primaryG01N21/85
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A system is disclosed for monitoring the concentration of gaseous ammonia in flue gases by simultaneously measuring the temperature and optical transmission of a flue gas-ammonia mixture.

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