Low-temperature separate chamber denitration reactor and flue gas denitration method

Abstract

The invention discloses a low-temperature separate chamber denitration reactor. The reactor is composed of a reactor external frame, a reactor internal support, reaction chambers and a thermal analysis system, the reactor is characterized in that the number of the reaction chambers is at least two, and the chambers are installed on the reactor internal support; the thermal analysis system for catalyst analysis is installed on the reactor external frame, and internal hot air inlets are formed above catalyst layers of each reaction chamber and controlled by hot air gas duct air distribution valves. The flue gas denitration method includes the steps of preliminary inspection, denitration, catalyst thermal analysis, catalyst replacement and operation shutdown. The reactor has the advantages oflong service life of a catalyst, high denitration efficiency and the like.

Description

technical field [0001] The invention relates to a selective catalytic reduction denitrification reactor, in particular to a low-temperature bin-type denitrification reactor and a flue gas denitrification method used in the metallurgical coking industry. Background technique [0002] In order to more effectively control the air pollution of coke oven flue gas, my country began to implement the "Emission Standard of Pollutants for Coking Chemical Industry" (GB16171-2012) from January 1, 2015. This standard requires coke oven flue gas nitrogen oxides and sulfur dioxide emissions to be less than 500mg / Nm 3 and 50mg / Nm 3 . At present, the new standard has been implemented for nearly three years, but the actual emission reduction effect of the coking industry is not good, and the problem of coking flue gas pollution is still very serious. Only a few companies in the coking industry have installed desulfurization devices, and very few companies have installed denitrification dev...

AI Technical Summary

Problems solved by technology

[0012] The technical problem to be solved by the present invention is to propose a new low-temperature bin-type denitrification reactor and its flue gas denitrification method in view of the shortcomings of ordinary denitrification reactors, such as the inability to replace the catalyst on-line, and the low denitrification efficiency during the thermal analysis of the low-temperature catalyst.

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