Diesel NOx Catalytic Converter Development: A Review-Reference-Cited by-同舟云学术

Diesel NOx Catalytic Converter Development: A Review

Published:1996-07-01 Issue:3 Volume:118 Page:668-672
ISSN:0742-4795
Container-title:Journal of Engineering for Gas Turbines and Power
language:en
Short-container-title:

Author:

Heimrich M. J.¹

Affiliation:

1. Southwest Research Institute, San Antonio, TX 78228

Abstract

This paper summarizes the findings of several technical articles on diesel NOx catalytic converter technology. Simplified theoretical reactions for NOx removal are discussed. Currently, development of catalytic NOx control technology for diesel engines is focused on systems that incorporate fuel hydrocarbons as the chemical reducing agent. Copper-and zeolite-based catalysts have been the predominant systems studied to date, but now catalysts containing precious metals are being investigated. Observed NOx reduction efficiencies typically ranged from 10 to 30 percent on actual engine exhaust systems when exhaust hydrocarbon enrichment strategies were used. Effects of carbon monoxide, sulfur dioxide, and water on NOx reduction efficiencies are reviewed. Recommendations for future research include attempts to broaden the temperature range of efficient NOx reduction, improving hydrocarbon selectivity toward the NOx reduction reaction, and the development of a supplementary reductant delivery system suitable for transient diesel engine operation.

Publisher

ASME International

Subject

Mechanical Engineering,Energy Engineering and Power Technology,Aerospace Engineering,Fuel Technology,Nuclear Energy and Engineering

Link

http://asmedigitalcollection.asme.org/gasturbinespower/article-pdf/118/3/668/5889408/668_1.pdf

Reference21 articles.

1. “Request for Proposals” (RFP) entitled “Demonstration of a Non-additive Lean NOx, Catalytic Converter for Heavy-Duty Diesel Vehicles,” State of California Air Resources Board, RFP No. 92–7, Sept. 14, 1992.

2. Heimrich, M. J., “Air Injection to an Electrically-Heated Catalyst for Reducing Cold-Start Benzene Emissions From Gasoline Vehicles,” SAE Paper No. 902115, 1990.

3. Kivosky J. R. , KoradiaP. B., and LimC. T., “Evaluation of a New Zeolite Catalyst for NOx Reduction With NH3,” American Chemical Society, Ind. Eng. Cem, Prod. Res. Dev., Vol. 19, 1980, pp. 218–225.

4. Urban C. M. , DietzmannH. E., and FanickE. R., “Emission Control Technology for Stationary Natural Gas Engines,” ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER, Vol. 111, 1989, pp. 369–374.

5. Held, W., Konig, A., Richter, T., and Puppe, L., “Catalytic NOx Reduction in Net Oxidizing Exhaust Gas,” SAE Paper No. 900496, 1990.

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