Synergistic efficient denitration device and process for treating electroplating sludge sintering waste gas

Abstract

The invention discloses a synergistic efficient denitration device for treating electroplating sludge sintering waste gas. The device comprises a powder spraying device, a bag-type dust collector, a heat storage oxidation device, a selective catalytic reduction denitration device, an induced draft fan and a wet desulphurization tower which are arranged in sequence, the device further comprises a thermal bypass branch and a combustor used for heating the thermal bypass branch. The inlet of the thermal bypass branch is communicated with the outlet in the top of the heat storage oxidation device,and the outlet of the thermal bypass branch is communicated with an outlet in the bottom of the heat storage oxidation device and the outlet of the cooling fan and then is connected with an inlet inthe top of the selective catalytic reduction denitration device. The invention further provides a denitration process based on the denitration device. The selective catalytic reduction method denitration device has the beneficial effects that by improving the front dust removal and affiliated ammonia evaporation unit of the selective catalytic reduction method denitration device, the gas inlet condition of the selective catalytic reduction method denitration device is improved, the denitration efficiency of the selective catalytic reduction method denitration device is synergistically improved, and the ultralow emission standard is achieved.

Description

technical field [0001] The invention relates to the technical field of ultra-low emission treatment of electroplating sludge sintering waste gas, in particular to a synergistic and efficient denitrification device and process for treating electroplating sludge sintering waste gas. Background technique [0002] In recent years, many cities in my country have experienced serious air pollution, especially the frequent occurrence of smog disasters, which seriously endanger human health and survival. People are eager to see the blue sky and white clouds as never before. According to the "Copper, Cobalt and Nickel Industrial Pollutant Discharge Standard" and the specific requirements of various regions, the emission standards of sulfur oxides, nitrogen oxides, and smoke are also gradually tightened. [0003] Due to the complex composition of flue gas from electroplating sludge sintering, insufficient combustion of sludge in the sintering machine, and high content of tar and CO in ...

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Problems solved by technology

[0009] The object of the present invention is to, aiming at the deficiencies in the prior art, provide a kind of synergistic high-efficiency denitrification device and process for treating electroplating sludge sintering waste gas, and solve the problem of dust (containing heavy metals, alkali metals) concentration, temperature and ammonia in the prior art. Low denitrification efficiency due to factors such as uniform distribution

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