Acid rain abatement

Patent · Tue Jun 11 04:00:00 EDT 1991

OSTI ID:5867745

Stiles, A B

This patent describes a method of obtaining acid rain abatement from a flue gas containing nitrogen oxides (NOX) and sulfur oxides (SOX). It comprises the steps of treating the flue gas with a reducing agent to remove the remaining oxygen and produce an effluent, the reducing agent being selected from group consisting of natural gas, methane, a mixture of CO and hydrogen derived from steam, hydrocarbon, and hydrogen, passing effluent over a catalyst to simultaneously reduce the NOX to water and elemental nitrogen and the SOX to H{sub 2}S or elemental sulfur, the catalyst being selected from the group consisting of heteropoly acids and their salts, the reduction of the NOX and SOX taking place in a temperature range of 200{degrees} - 900{degrees} C., and removing the sulfur or sulfur compounds from the reduced flue gas to thereby remove essentially all of the NOX and SOX.

• Assignee: Univ. of Delaware, Newark, DE (United States)
• Patent Number(s): A; US 5023063
• Application Number: PPN: US 7-498539
• OSTI ID: 5867745
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200202 -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
29 ENERGY PLANNING, POLICY, AND ECONOMY
294000 -- Energy Planning & Policy-- Fossil Fuels
54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
ACID RAIN
ADDITIVES
AIR POLLUTION ABATEMENT
ALKANES
ATMOSPHERIC PRECIPITATIONS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYTIC CRACKING
CHALCOGENIDES
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
DENITRIFICATION
DESULFURIZATION
DISPERSIONS
ELEMENTS
ENERGY SOURCES
FLUE GAS
FLUIDS
FOSSIL FUELS
FUEL ADDITIVES
FUEL GAS
FUELS
GAS FUELS
GASEOUS WASTES
GASES
HYDROCARBONS
HYDROGEN
METHANE
MIXTURES
NATURAL GAS
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTANTS
POLLUTION ABATEMENT
PYROLYSIS
RAIN
SULFUR COMPOUNDS
SULFUR OXIDES
THERMOCHEMICAL PROCESSES
WASTES