Countercurrent spray drying equipment

Abstract

The invention provides a counter-current spray drying equipment, comprising a tower body, the top of the tower body is provided with an atomizing feeder, the bottom end is an inverted cone and is provided with a discharge port, and the tower body is provided with a hot air There are a plurality of mist outlets of the atomizing feeder, which are vertically downward and arranged in a circular arrangement. The hot air outlets are also provided with a plurality of vertical upwards and arranged in a circular arrangement. The hot air The ring line where the mouth is located and the ring line where the mist outlet is located are misaligned and have the same circle center. In the present invention, the mist outlet and the hot air outlet arranged in an annular dislocation make the mist sprayed from the mist outlet flow downward in a ring, while the hot air ejected from the hot air outlet flows upward in a ring to form a dislocation counterflow and increase the contact area. At the same time, the contact time is reduced, the airflow condition in the tower is improved, and the effect and efficiency of product drying and molding are improved.

Description

technical field [0001] The invention relates to the technical field of drying, in particular to a counter-flow spray drying device. Background technique [0002] The spray drying tower is a kind of drying equipment that puts the raw material liquid into the atomizer and separates it into droplets, and obtains the powder-shaped products by direct contact with the droplets, such as hot air. It has the advantages of fast drying speed, high production efficiency, Convenient operation, suitable for large-scale production and other advantages, widely used in the drying of biological pesticides, medicine, food microorganisms and other fields. The existing spray drying tower usually feeds the spray and the hot air in the same direction to form a co-directional flow, so that the sprayed droplets are difficult to contact with the hot air in a large area in a very short time, resulting in poor drying effect, thus making production difficult. The product quality is difficult to meet th...

AI Technical Summary

Problems solved by technology

The existing spray drying tower usually feeds the spray and the hot air in the same direction to form a flow in the same direction, which makes it difficult for the sprayed droplets to contact the hot air in a very short time, resulting in poor drying effect, thus making the production The product quality is difficult to meet the requirements

Images