Atomization evaporation drying system

Abstract

The invention discloses an atomization evaporation drying system. The system comprises an evaporation tower and an atomizer; a first gas guide pipe section, a second gas guide pipe section and a thirdgas guide pipe section are sequentially arranged at a tower inlet of the evaporation tower in the gas flow direction; the flow area of the first gas guide pipe section is gradually decreased in the gas flow direction; and the second gas guide pipe section is an equal-diameter section; the flow area of the third gas guide pipe section is gradually increased in the gas flow direction; all nozzles of the atomizer extend into mounting holes in the pipe wall of the first gas guide pipe section in a one-to-one correspondence mode from the outer side of the first gas guide pipe section; part of fogdrops of each nozzle are sprayed out in the gas flow direction, and part of the fog drops are sprayed out in a direction opposite to the gas flow direction. The atomization evaporation drying system has the advantages of higher evaporation drying efficiency, low operation cost and low evaporation drying gas consumption; the smaller evaporation tower can be adopted, material accumulation on the wall of the tower and pipe walls is avoided, and a solid waste discharge port of the evaporation tower, the interiors of the nozzles of the atomizer and nozzles of the atomizer are unlikely to be blocked.

Description

technical field [0001] The invention relates to the technical field of evaporation equipment, in particular to an atomization evaporation system. Background technique [0002] In industrial production, the atomization evaporation system is often used to thermally evaporate the production waste to achieve zero discharge of production waste. For example, coal-fired power plants will use high-temperature flue gas to thermally evaporate desulfurization wastewater. The specific process is: spray desulfurization wastewater into the evaporation tower of the atomization evaporation system through the atomizer of the atomization evaporation system. At the same time, The high-temperature flue gas is evenly passed into the evaporation tower through the gas distributor, and the desulfurization wastewater is evaporated to dryness by using the high-temperature flue gas. The gas enters the exhaust gas treatment system, and the separated solid components are discharged from the solid waste...

AI Technical Summary

Problems solved by technology

[0005] (1) After running for a period of time, the material accumulation on the wall of the evaporation tower is serious, and the solid waste discharge outlet of the evaporation tower and the inside and nozzle of the atomizer are easily blocked

[0006] (2) High operating cost and large consumption of evaporated gas

[0007] (3) Evaporation efficiency is low, and usually a large evaporation tower is required to complete the evaporation task

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