Granulating system and method thereof

Abstract

The invention discloses a granulating system and a method thereof, and belongs to the field of chemical fertilizer production. The granulating system comprises a tower body, a feeding device and a material receiving device, wherein the cross section of the tower body is polygonal; at least two spray heads are arranged at the periphery of the top of the tower body; the feed opening of each nozzle is communicated with a discharge opening of the feeding device; first exhaust pipes arranged at the top of the tower body wind extend out of the tower body across the top of the tower body, and are communicated with a temperature and humidity lowering device outside the tower body; the air outlet of the temperature and humidity lowering device is communicated with the air inlet of an induced draft fan; the induced draft fan is positioned at the position close to the bottom of the tower body outside the tower body; the induced draft fan is communicated with the inner cavity of the tower body; a dust remover is additionally arranged on a second exhaust pipe; a powder outlet of the dust remover is communicated with the feeding device. According to the granulating system disclosed by the invention, the height of the tower body is lowered by 20-50%; the maximum radius of the tower body is smaller than 8m; granulation is not influenced by seasons or weather; various problems which are confronted with when chemical fertilizers are produced through tower granulation can be solved, and safe and stable production of composite fertilizers is realized.

Description

technical field [0001] The invention belongs to the field of chemical fertilizer production, and in particular relates to a granulation system and method for compound fertilizer production. Background technique [0002] At present, the granulation equipment used in the fertilizer industry to produce granular fertilizers is mainly divided into granulator and granulation tower. Because of the simple structure, the prilling tower is more widely used for energy saving and environmental protection. High towers are mostly used in the production of compound fertilizers in China. The tower height of the tower granulation process is generally 90-130 meters. According to the different production scales, the tower diameter is generally between 16-22 meters. The tower granulation process is obviously different from other granulation methods for its round granule appearance, high ball forming rate, and less return material. However, with the popularization of high-tower technology, the...

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Problems solved by technology

[0003] In order to overcome the problems existing in the existing high and low tower granulation, the present invention discloses an improved high tower granulation system and its method, the height of the tower body is reduced by 20%-50%, and the circumscribed circle radius No more than 8 meters, granulation is not affected by seasons and climates, and can better solve various problems encountered in high-tower granulation production of fertilizers, and the device is safe and reliable, and there is no danger of explosion

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