Spray-drying pelletizing tower

Abstract

The invention discloses a spray-drying pelletizing tower which comprises a tower body, wherein the tower body comprises an atomization drying chamber and a collecting hopper, wherein an annular feeding tube is arranged on the outer side of the tower body; the feeding tube is connected with a mother liquor tank; high-pressure atomizers are arranged on the feeding tube at intervals; the tower body is connected with a hot air system; the hot air system comprises a first hot air tube, a second hot air tube and a hot air fan; the hot air fan is positioned on the outer side of the tower body; the first hot air tube penetrates through the tower body; an air outlet of the first hot air tube is positioned below the high-pressure atomizers; the second hot air tube penetrates through the tower body;an air outlet of the second hot air tube is positioned above the high-pressure atomizers; and a heat-preservation layer is arranged on the outer side of the tower body. The spray-drying pelletizing tower disclosed by the invention has the advantages of reasonable arrangement, good atomization effect, uniform atomization dispersion, good drying effect, fine and uniform granule, difficulty in agglomeration, uniform hot air distribution, long atomization drying time, good drying effect and rapid speed.

Description

technical field [0001] The invention relates to the field of spray drying and granulation, in particular to a spray drying and granulation tower. Background technique [0002] Spray drying is a method of systematic technology applied to material drying. After the thinner is atomized in the drying room, the water vaporizes quickly in contact with the hot air, and the dry product is obtained. This method can directly dry the solution and emulsion into powder or granular products, which can save the evaporation, crushing and other processes. [0003] The working principle of spray drying: through mechanical action, the material to be dried is dispersed into very fine mist-like particles (increasing the evaporation area of ​​water and accelerating the drying process) in contact with hot air, and most of the water is removed in an instant , to dry the solid matter in the material into powder. [0004] The existing spray drying tower mainly includes a tower body, a high-press...

AI Technical Summary

Problems solved by technology

Because the high-pressure atomizer is generally arranged on the center line of the tower body, so that the liquefaction is uniform, and the hot air blower is arranged outside the tower, the spray drying tower in the prior art has the following problems: 1. The high-pressure atomizer is arranged on the center line of the tower body , so that the atomization range is small, the atomization area at the center is large, and the atomization area around it is small, resulting in high atomization concentration at the center and insufficient dispersion, so that the atomized particles are easy to gather into lumps or cannot effectively form uniform fine particles ;2. Uneven distribution of hot air makes it difficult to effectively dry and granulate

Images