Novel SCR denitration device efficiency calculation method

Abstract

The invention relates to a novel SCR (Selective Catalytic Reduction) denitration device efficiency calculation method, which comprises the following steps of setting sampling points at an inlet and anoutlet of an SCR denitration device, and sampling and measuring flue gas flow rate, oxygen content and nitrogen oxide content at each sampling point. Firstly, the average concentration of inlet nitric oxide is calculated; the average concentration of nitrogen oxide at an outlet is calculated; finally, the denitration efficiency is calculated. According to the method, the flue gas flow rate is added in detection to serve as a factor participating in calculation, the flue gas nitrogen oxide concentration obtained through calculation is more accurate and scientific, and the calculated denitration efficiency better conforms to the actual operation condition of equipment. The method is applied to SCR (selective catalytic reduction) and SNCR (selective non-catalytic reduction) denitration engineering, the distribution condition of pollutants in the flue can be known more accurately, and a more reliable data basis is provided for adjustment of denitration ammonia spraying amount. And meanwhile, more instructive parameter analysis is provided for on-site ammonia injection optimization and adjustment, pollutant concentration calculation is more scientific, and the practical value is very high.

Description

technical field [0001] The invention belongs to the technical field of electric power engineering measurement, in particular to a novel method for calculating the efficiency of an SCR denitrification device. Background technique [0002] As my country's emphasis on environmental protection and related industries has gradually increased, the identification and detection methods of environmental protection equipment have been greatly improved. Among them, there are corresponding standards and specifications for the detection technology of desulfurization and denitrification equipment for boiler flue gas. The detection method is based on the method specified in item 7 of the national standard GB / T16157-1996 "Determination of Particulate Matter in Exhaust from Stationary Pollution Sources and Sampling Methods of Gaseous Pollutants". However, the detection standards at the present stage are too simple. In order to facilitate on-site detection and calculation, fewer on-site factors...

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Problems solved by technology

Among them, the detection method of the selective catalytic reduction reaction (SCR) denitrification device only considers the nitrogen oxide content and oxygen content in the flue gas, and does not consider the problem of the flue gas flow rate. The calculation method is simple and few other factors are considered. The problem

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