Industrial flue gas exhaust cleaning tower

Abstract

The invention relates to the field of tail gas purification technical equipment for coking production, and provides an industrial flue gas exhaust cleaning tower. Five purification guarantees are arranged, specially comprising a shell, the interior of the shell is divided into an inner cylinder, a liquid storage chamber and a spraying area. An air inlet communicated with the outside is formed in the upper part of the inner cylinder; the liquid storage chamber is communicated with the lower part of the inner cylinder; an annular partition plate is arranged between the liquid storage chamber andthe side wall of the inner cylinder. The spraying area is defined by an annular partition plate, the side wall of the inner barrel, the inner wall of the shell and the inner top face of the shell together. Two convolute air passages are further arranged between the liquid storage chamber and the inner wall of the shell; a circulating liquid injection pipe is arranged outside the side wall of theair inlet; a spray washing liquid pipe is arranged at the top of the spray area, a plurality of spray holes are formed in the pipe wall of the spray washing liquid pipe, an air outlet pipe is arrangedat the position, below the spray washing liquid pipe, of the side wall of the shell, a mist catcher is arranged below the air outlet pipe, and an injection port and an emptying port which are communicated with the liquid storage chamber are further sequentially formed in the side wall of the shell from top to bottom.

Description

technical field [0001] The invention relates to the technical equipment field of tail gas purification in coking production, and more specifically relates to an industrial flue gas exhaust cleaning tower. Background technique [0002] In the coking industry, in order to recover the ammonia in the gas, the saturator method is usually used to produce ammonium sulfate. The tail gas produced after the ammonium sulfate is dried will first enter the dust collector for dust removal treatment, and after the ammonium sulfate dust in the tail gas is removed, it will be discharged into the atmosphere. . With the intensification of production and the lack of capacity of the dust collector itself, a large amount of ammonium sulfate dust is often entrained in the tail gas and enters the atmosphere, polluting the environment. Due to the high cost of production equipment and pipeline transformation, the solution to ammonium sulfate tail gas dust pollution is usually to transport the tail g...

AI Technical Summary

Problems solved by technology

In this method, the coal gas stays in the exhaust purification tower for a short time, so it is not ideal to make the gas fully contact with the atomized water, and the water mist collector is not effective in collecting the water droplets of condensed dust particles, which leads to the drying of ammonium sulfate. The recovery rate of tail gas is low, the acid mist exceeds the standard, and a large amount of water droplets of ammonium sulfate dust or condensed dust particles are discharged into the environment, polluting the environment of the factory area

Moreover, when the dry tail gas does not reach the saturated humidity, the evaporation of water will easily lead to crystallization and sticking to the wall in the later stage, causing problems such as aerosol, secondary pollution of smog, excessive acid mist, droplet entrainment, and corrosion crystallization agglomeration.

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