Simulation platform and test method for flow field arrangement structure of flue gas denitration apparatus

Abstract

The invention discloses a simulating platform of the fume denitration device flow field distributing structure and a testing method. At present the denitration efficiency of the fume denitration device is greatly affected by the fume velocity distributing uniformity and the reducer ammonia gas / nitrogen oxide mixing uniformity. The invention includes an inlet pipe, a coal economizer, an inlet flue, a current stabilizing plate, a reactor, an outlet flue and a blower connected in turn, wherein an ash bucket is arranged at the round of the bottom of the inlet flue, and an air jetting device is arranged on the vertical section of the inlet flue. Guide plates located on the bottom of the top flue are arranged on the round of each flues. A plurality of layers of catalyzer are provided in the reactor, and a plurality of speed measuring holes are arranged at the entrance of the air jetting device and under the current stabilizing plate. The invention builds the simulating platform of the denitration device flow field structure, performs the experiment through the simulating platform, obtains the flow field distributing status of the denitration device, provides reasonable engineering measurement to improve the flow field distributing structure in the denitration system.

Description

technical field [0001] The invention relates to a simulation platform for the flow field distribution structure of an SCR (selective catalytic reduction) flue gas denitrification device suitable for thermal power plant boilers and a test method for testing the flow field distribution structure using the platform. Background technique [0002] The boiler SCR flue gas denitrification device of a thermal power plant has the function of removing the pollutant nitrogen oxides (NOx) in the flue gas, so as to meet the emission standards of the pollutants in the flue gas of the power plant. However, since the denitrification efficiency of the flue gas denitrification device is greatly affected by the uniformity of the flue gas flow velocity distribution and the mixing uniformity of the reducing agent ammonia gas / nitrogen oxides, if the flow velocity distribution is uneven or the mixing of ammonia gas / nitrogen oxides is uneven, the It will greatly reduce the denitrification efficienc...

AI Technical Summary

Problems solved by technology

However, since the denitrification efficiency of the flue gas denitrification device is greatly affected by the uniformity of the flue gas flow velocity distribution and the mixing uniformity of the reducing agent ammonia / nitrogen oxides, if the flow velocity distribution is uneven or the ammonia / nitrogen oxides are not mixed uniformly, the Greatly reduce the denitrification efficiency, or cause ash blocking, and even cause the boiler to trip and shut down, which will have a negative impact on the safe operation of the power plant and cause economic losses

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