Patent · US Active

Gas turbine combustor exhaust gas spray cooling for NOx control using selective catalytic reductions

US8402755B2 · kind B2 · utility

6Cited by

17References

16Claims

0Family size

Assignee

General Electric Company · US

Inventors

Ajit Singh Sengar · Bengaluru, IN
Saravanan Venkataraman Nattanmai · Chennai, IN

Key dates

Filing date	Jul 30, 2008
Grant date	Mar 26, 2013
Priority date	—
Expiry date	Mar 16, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Systems for reducing nitrogen oxides in combustion exhaust gas include a selective catalytic reactor (SCR) assembly having a catalyst bed for receiving a flow of exhaust gas, an exhaust gas conduit for introducing exhaust gas to the SCR assembly, at least one nozzle for introducing cooling water into the exhaust gas before the exhaust gas exits the SCR assembly, and at least one reductant conduit for introducing at least one reductant into the exhaust gas to form a reductant/exhaust mixture before the exhaust gas exits the SCR assembly. Methods for reducing nitrogen oxides in combustion exhaust gas include introducing an exhaust gas into a SCR assembly, and introducing cooling water into the exhaust gas, reducing the temperature of the exhaust gas, and introducing at least one reductant into the exhaust gas to form a reductant/exhaust mixture before the exhaust gas exits the SCR assembly.

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