System for treating exhaust gas from nitrogen-containing-fuel- or hydrogen-combustor
AssigneeJohnson Matthey Public Limited Company
InventorsSilvia ALCOVE CLAVE, Veselina Mihaylova GEORGIEVA, Loredana MANTAROSIE, Maria Pia RUGGERI, Roberta VILLAMAINA
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Abstract
Provided is a fuel combustion and exhaust gas system comprising a fuel combustor and an exhaust gas treatment system, wherein the fuel combustor is a nitrogen-containing-fuel- or hydrogen-combustor and wherein the exhaust gas treatment system comprises a first catalyst article comprising an Fe-loaded small- or medium-pore molecular sieve, the small- or medium-pore molecular sieve having a silica-to-alumina ratio (SAR) of from 6 to 19.
Claims14
A fuel combustion and exhaust gas system comprising a fuel combustor and an exhaust gas treatment system, wherein the fuel combustor is a nitrogen-containing-fuel- or hydrogen-combustor and wherein the exhaust gas treatment system comprises a first catalyst article comprising an Fe-loaded small-pore molecular sieve, the small-pore molecular sieve having a silica-to-alumina ratio (SAR) of from 6 to 19, and wherein the small-pore molecular sieve of the first catalyst article is a small-pore zeolite having a framework defined by a Framework Type Code CHA.
(canceled)
Use of an Fe-loaded small-pore molecular sieve to reduce the concentration of N2O in an exhaust gas from a nitrogen-containing-fuel- or hydrogen-combustor, wherein the small-pore molecular sieve has a SAR of from 6 to 19, and wherein the small-pore molecular sieve of the first catalyst article is a small-pore zeolite having a framework defined by a Framework Type Code CHA.
A fuel combustion and exhaust gas system comprising a fuel combustor and an exhaust gas treatment system, wherein the fuel combustor is a nitrogen-containing-fuel- or hydrogen-combustor and wherein the exhaust gas treatment system comprises a first catalyst article comprising an Fe-loaded small-pore molecular sieve, the small-pore molecular sieve having a silica-to-alumina ratio (SAR) of from 6 to 19, and wherein the small-pore molecular sieve of the first catalyst article is a small-pore zeolite having a framework defined by a Framework Type Code CHA, wherein the exhaust gas treatment system further comprises an SCR catalyst article upstream of the first catalyst article, wherein the exhaust gas treatment system further comprises an ammonia slip catalyst (ASC) article upstream of the first catalyst article, wherein the SCR catalyst article is upstream of the ASC article.
Dependencies are inferred from the claim text.