Denitration and dedusting device and process for exhaust gas of kiln used for water glass production

Abstract

The invention relates to a denitration and dedusting device for exhaust gas of a kiln used for water glass production. The denitration and dedusting device comprises a denitration reactor, pulse dedusting mechanisms and a catalytic mechanism sequentially arranged from top to bottom, wherein the pulse dedusting mechanisms and the catalytic mechanism are arranged to match with each other; the catalytic mechanism comprises a first catalytic unit, a second catalytic unit and a third catalytic unit; each catalytic unit comprises a catalyst layer and one pulse dedusting mechanism; each of the catalytic units comprises the catalyst layer arranged on the lower end of a reactor; the bottom end of each catalyst layer is provided with a vibrating plate; and the surface of the vibrating plate is evenly provided with a plurality of vibrators. The denitration and dedusting device of the invention is internally provided with the pulse dedusting mechanisms which are used for intermittently performing jetting operation on the surfaces of the catalyst layers so as to effectively remove surface components of a catalyst; and through the intermittent vibration of a vibration mechanism and the operation of the pulse dedusting mechanism at the same time, the dedusting effect of the catalyst is enhanced, and a denitration system can continuously, stably and efficiently run for a long time.

Description

technical field [0001] The invention belongs to the technical field of denitrification and dust removal, and in particular relates to a denitrification and dust removal device for tail gas of a water glass kiln and a process method thereof. Background technique [0002] Water glass (Na 2 O mSiO 2 ) as an important raw material of white carbon black (hydrated silicon dioxide), which is prepared by mixing quartz sand and soda ash in a certain proportion, sending them into a water glass kiln and calcining at a high temperature. According to national regulations, coal-fired kilns must be purified (desulfurization, denitrification) before the exhaust gas can be discharged into the atmosphere. [0003] At present, there are mainly two denitrification technologies on the market, SNCR (Selective Non-Catalytic Reduction) and SCR (Selective Catalytic Reduction). SNCR denitrification technology is to convert NH 3 , urea and other reducing agents are sprayed into the boiler and NO ...

AI Technical Summary

Problems solved by technology

Although the electrostatic precipitator system is more stable than the high-temperature bag filter system, the operating cost is high. After calculation, the cost of water glass per ton will increase by 60-80 yuan

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