METHOD, SYSTEM AND APPARATUS FOR LIQUID INJECTION INTO A GAS SYSTEM

METHOD, SYSTEM AND APPARATUS FOR LIQUID INJECTION INTO A GAS SYSTEM

A method for injection of a liquid reductant (17) into an exhaust gas (30) and for evaporating and decomposing the liquid reductant at an elevated temperature includes providing an exhaust pipe (12) having an interior surface (18) and disposing the exhaust pipe in fluid communication with and upstre...

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Hauptverfasser: AMIN EMAD M, GRAVANTE STEVE PETER, MAKARTCHOUK ANDREI, O'CONNOR JUSTIN, SMITH S. SCOTT
Format: Patent
Sprache:eng
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PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
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creator AMIN EMAD M
GRAVANTE STEVE PETER
MAKARTCHOUK ANDREI
O'CONNOR JUSTIN
SMITH S. SCOTT
description A method for injection of a liquid reductant (17) into an exhaust gas (30) and for evaporating and decomposing the liquid reductant at an elevated temperature includes providing an exhaust pipe (12) having an interior surface (18) and disposing the exhaust pipe in fluid communication with and upstream of a catalyst (38). The method also includes the steps of disposing an internal cone (20) within the exhaust pipe (12) generally parallel to the exhaust pipe, mounting an injector (14) to the exterior of the exhaust pipe in fluid communication with the internal cone, injecting the liquid reductant into the internal cone, and directing the exhaust gas (30) in a passage between the interior surface (18) of the exhaust pipe and the internal cone. The exhaust gas (30) is also directed within the internal cone (20). The flow of exhaust gas (30) has an elevated temperature compared to an ambient. A further step includes creating a drag force on the injected liquid reductant (17) to increase the travel time of the injected liquid reductant from the injector (14) to the catalyst (38).
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PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
title METHOD, SYSTEM AND APPARATUS FOR LIQUID INJECTION INTO A GAS SYSTEM
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