Spray drying system

Abstract

The invention spray drying system, which comprises a charging pump, a spray drying tower, a pulse bag-type dust collector, a plate-type heat exchanger and an air heater, wherein the bottom of the spray drying tower is connected with a tower bottom opening pipe; a discharge hole of the spray drying tower is formed on the lateral surface of the tower bottom opening pipe; a fluid director is arranged in the tower bottom opening pipe; and a column body matched with the inner diameter of the tower bottom opening pipe is positioned at the bottom of the fluid director, and a smooth curved surface ispositioned on the upper part of the fluid director. In the spray drying system, the fluid director is arranged in the tower bottom opening pipe, so wind speed in the tower bottom opening pipe can be improved, and products are prevented from depositing at the bottom of the tower and the tower bottom opening pipe; and a stirring cleaning device is arranged at the corner of a pipeline, so the spray drying system can convey materials smoothly, and is favorable for improving production efficiency and ensuring the quality of the products.

Description

technical field [0001] The present invention relates to spray drying systems. Background technique [0002] Spray drying is a commonly used drying method. The Chinese Patent No. 200610114328.1 discloses a seasoning spray drying unit, which includes a feeding device, a drying tower, a No. 1 fan, a No. 1 heater, a primary cyclone separator and a water film dust collector. ; The central hot air inlet at the top of the drying tower is provided with a hot air distributor and an atomizer installed in the center of the hot air distributor and connected with the feeding device. The inlet of the channel plate is connected to the output pipe of No. 1 heater, and the outlet of the air channel plate is connected to the inlet of the hot air distributor; a jacket is provided near the top of the drying tower body, and the gap between the jacket and the inner wall of the tower body is The space is the wall-sweeping air inlet channel, and the annular gap between the bottom of the jacket an...

AI Technical Summary

Problems solved by technology

However, the above-mentioned spray drying unit is only suitable for drying seasonings, and is not suitable for drying the suspension of lithium iron phosphate mixture. This is due to the poor fluidity of the lithium iron phosphate mixture, which is prone to material deposition at the bottom of the spray drying tower and the turning of the pipeline. Phenomena that affect the transportation of materials

In addition, because spray drying is instantaneous drying, and the drying of lithium iron phosphate requires controlling the final moisture content of the product to be very low, the outlet air temperature of the drying tower is relatively high, and the above-mentioned spray drying unit does not utilize the waste heat of the exhaust gas

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