They were placed on your computer when you launched this website. You can change your cookie settings through your browser. Request Free Trial. Language: English. Full Description This standard specifies requirements and provides guidance for the selection, design specification, mechanical description, operation, maintenance, and test procedures for post-combustion NOx control equipment and related mechanical systems and components used for fired equipment in petrochemical and general refinery service.
This standard is primarily intended for direct application to fired process heaters, reformers, industrial, and power boilers in petrochemical and general refinery services.
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Add to Cart. It does not cover reduced NOx formation through combustion design techniques, such as flue gas recirculation FGR and staged combustion. This document covers two of the methods of post combustion NO x reduction: a. SNCR is a process where the addition of ammonia or urea into the flue gas stream causes the oxides of nitrogen to convert to nitrogen and water vapor. The basis for the selection and limitations of the SNCR systems are described in 4. SCR is a process where the addition of ammonia into the flue gas stream in the presence of a suitable catalyst causes the oxides of nitrogen to convert to nitrogen and water vapor.
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