منابع مشابه
Closed-loop control of a SCR system using a NOx sensor cross-sensitive to NH3
This paper presents a control strategy for an automotive selective catalytic reduction (SCR) system, for which the feedback is based on a NOx sensor measurement. This NOx sensor is cross-sensitive to NH3, which is critical for control purposes: a study of the closed-loop dynamics is performed which permits to calibrate the control strategy. Experimental results illustrate the performance of the...
متن کاملTHE NEW “ENHANCED NH3-SCR” REACTION FOR NOx EMISSION CONTROL
NH3-Selective Catalytic Reduction (SCR) is applied worldwide to DeNOx of combustion exhausts from stationary and mobile sources, but a greater DeNOx activity at low temperatures is desired to meet forthcoming restrictive legislations. We have obtained high NO reduction efficiencies at 200 – 300 °C over commercial V-based and Fe-exchanged zeolite catalysts by reacting NO with both ammonia and ni...
متن کاملNOx removal over a double bed NSR-SCR reactor configuration
Introduction NOx Storage-Reduction (NSR) catalytic systems and urea-SCR are both considered viable solutions for the NOx removal under lean conditions. In NSR systems (e.g. PtBa/Al2O3) the removal of NOx is realized under cyclic conditions, by alternating long lean periods during which NOx are adsorbed on the catalyst with short excursions under rich conditions during which the stored NOx are r...
متن کاملOn the Effect of Preparation Methods of PdCe-MOR Catalysts as NOx CH4-SCR System for Natural Gas Vehicles Application
In the present work, the effect of several parameters involved in the preparation of PdCe-HMOR catalysts active for NOx selective catalytic reduction with methane (NOx CH4-SCR) was studied. Results show that the catalytic performance of Pd-HMOR is better when palladium is introduced by ion-exchange, namely at room temperature. It was also shown that Pd loading does not influence the formation o...
متن کاملEvaluation of Mercury Speciation at Power Plants Using Scr and Sncr Nox Control Technologies
Since the U.S. Environmental Protection Agency (EPA) regulatory determination in 2000 that it intended to regulate emissions from coalfired power plants, many utilities have stepped up proactive steps to investigate methods to control and reduce emissions. However, a lack of sound data still exists which documents the effect of selective catalytic reduction (SCR), selective noncatalytic reducti...
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ژورنال
عنوان ژورنال: Marine Engineering
سال: 2016
ISSN: 1346-1427,1884-3778
DOI: 10.5988/jime.51.269