Boiling fluidization drying apparatus

Abstract

A boiling fluidization drying apparatus comprises an upper bed body, a middle bed body and a frame. An air outlet is arranged on the top face of the upper bed body. A feed port and a discharge chamber are respectively arranged at the front face and the back face at the lower portion of the upper bed body. A fine powder reflux pipe inserted from the top face is arranged in the upper bed body. The middle bed body is divided into a plurality of drying chambers along the front-and-back direction by a baffle plate. An opening is arranged at the lower portion of the baffle plate. An air duct is formed. A hole plate is arranged at the connection of the middle bed body and the lower bed body. The lower bed body is a wind division apparatus. The wind holes on the hole plate are fishscale holes and arranged in a row orderly. The direction of the air outlets of the wind hole in the same row is consistent. The hole rows are arranged at intervals at the back left portion and the back right portion of the air outlet. An included angle exists between the projection of the air outlet of the wind hole on the hole plate and the central line of the hole plates at the front-and-back direction. The invention has good drying effect and is especially suitable for drying the thermal sensitivity materials.

Description

technical field [0001] The invention relates to boiling fluidized drying equipment, which is especially suitable for drying heat-sensitive materials. Background technique [0002] Spices (scents) as food additives are heat-sensitive materials. The traditional drying production method adopts the static drying method of radiation heat transfer, that is, the wet material is placed in the baking tray, and then placed on the drying rack in the oven, heated at a low temperature in the oven, artificially stir-fried intermittently, and then cooled naturally after being out of the box After packing. The above-mentioned drying method has the defect that the wet material is heated unevenly, resulting in inconsistent water content of the finished product. The Chinese application number is 88205253.5, which discloses a boiling drying device for low-melting granular materials. and so on. The boiling drying method can improve the defect of inconsistent water content of the finished pro...

AI Technical Summary

Problems solved by technology

The boiling drying method can improve the defect of inconsistent water content in the finished product, but due to the technical characteristics of heat-sensitive materials that will melt, stick, and dehumidify when they are close to the dry base if they are continuously heated, and the moisture content of the spice (refined) product is required 0.005%, the heat-holding temperature of the finished product should not be higher than room temperature by 10° (room temperature is 25°), so the drying requirements for heat-sensitive materials are relatively high, and not all boiling drying equipment is suitable for drying heat-sensitive materials

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