A spray drying tower hot air distribution device

Abstract

The invention relates to a hot air distribution device, in particular to a hot air distribution device of a spray-drying tower, and belongs to the technical field of drying. The hot air distribution device comprises three inverted-frustum-shaped casings concentrically mounted in a sleeve manner, wherein the three inverted-frustum-shaped casings are connected through a top cover; the upper part of the outer inverted-frustum-shaped casing is divided by a cylinder to form an air inlet volute, and a plurality of air inlet pipes are evenly arranged on the cylinder to communicate the air inlet volute with an air channel formed by the outer inverted-frustum-shaped casing and the middle inverted-frustum-shaped casing; flow guiding plates are evenly mounted at the lower part of the outer wall of the middle inverted-frustum-shaped casing; the inner inverted-frustum-shaped casing provided with a centrifugal atomizer is located inside the middle inverted-frustum-shaped casing; the air inlet volute is connected with an outer air channel. With the adoption of the hot air distribution device, hot air can be more evenly distributed when entering the drying tower, distribution of fog drop groups can be controlled, the hot air and fog drops are fully and evenly mixed and dried, and wall sticking and top sticking phenomena are avoided to the maximum extent.

Description

technical field [0001] The invention relates to a hot air distribution device, in particular to a spray drying tower hot air distribution device, which belongs to the drying technical field. Background technique [0002] In recent years, the application fields of drying technology have become more and more extensive. In addition to the traditional fields of food and medicine, it has also been applied in the field of environmental protection. With the intensification of environmental pollution, the environmental standards are becoming more and more stringent. The state requires coal-fired power plants to conduct zero-discharge treatment of desulfurization wastewater. Some scholars have studied the establishment of a separate drying tower for evaporation treatment of desulfurization wastewater. This method requires part of the hot flue gas introduced into the air preheater to fully contact with the desulfurization wastewater and evaporate to dryness, and the evaporated product...

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Problems solved by technology

[0004] During the use of the existing hot air distribution device for drying towers, there is a problem of uneven distribution of hot air, and the speed and direction of the hot air at the air outlet are not good, resulting in the uneven mixing of materials and hot air, resulting in insufficient drying or sticking to the wall.

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