Aluminum stone kiln bond breaking denitration equipment and denitration method

Abstract

The invention discloses aluminum stone kiln bond breaking denitration equipment and a denitration method. The equipment includes an aluminum stone kiln. The upper and lower parts of the outer wall of the aluminum stone kiln are respectively connected to a flue and a fresh air pipeline. A flue gas reflux pipeline is connected to the flue. An air mixer is arranged at the intersection of the glue gas reflux pipeline and the fresh air pipeline. The end of the flue is connected to a desulfurization and denitration dust remover I, a trap and a desulfurization and denitration dust remover II. Sewage discharge ports of the desulfurization and denitration dust remover I and the desulfurization and denitration dust remover II communicate with a circulation tank. An air outlet of a desulfurization and dedusting reaction vessel communicates with a water-mist separator. An air-out pipeline of the water-mist separator is connected to a chimney. The equipment also includes an ammonia water storage tank and a nitrogen oxide bond breaker. A pipeline mixer is mounted on the upper end of the nitrogen oxide bond breaker. The pipeline mixer communicates with a flue gas high temperature region of the aluminum stone kiln through a mixed pipeline. The ammonia water storage tank communicates with the pipeline mixer through an ammonia supply pump to supply ammonia. The whole process is simple, the equipment reconstruction cost is low, and the denitration efficiency is high, which fully meets the environmental protection requirements.

Description

[0001] Technical field: [0002] The invention relates to the field of environmental protection equipment, in particular to an aluminum stone kiln bond breaking denitrification equipment and a denitrification method. [0003] Background technique: [0004] In 2019, furnaces and kilns across the country will carry out ultra-low emission transformation. The specific requirements of the new boiler emission limit: soot particles 10mg / m 3 , sulfur dioxide 20mg / m 3 , Nitrogen oxide 50mg / m 3 ,The kiln is the equipment commonly used in the kiln industry. This kind of kiln is an open structure. The kiln feeds from the front and discharges from the back. The center is a high-temperature area, which causes the oxygen content of the flue gas to exceed the standard (18%) , and the calcination process is also open, so it is very important to control the oxygen content of the flue gas. [0005] The energy consumption of furnaces in my country accounts for about 1 / 3 of industrial energy co...

AI Technical Summary

Problems solved by technology

Furnace flue gas emission adopts traditional bag dust removal and desulfurization tower, and the emission of nitrogen oxides is generally much greater than 50mg / m 3 , the traditional bag dust removal, desulfurization tower, SCR, SNCR denitrification methods are helpless, and cannot achieve high-efficiency denitrification indicators

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