Multistage spray and fluidized drying equipment

Abstract

The invention discloses multistage spray and fluidized drying equipment and relates to multistage spray and fluidized drying equipment with upward air exhausting. The multistage spray and fluidized drying equipment is satisfactory drying equipment applicable to various materials with different features, such as dairy products, mirco-encapsulated essence, coffee mate, yolk powder and fruit and vegetable powder. The multistage spray and fluidized drying equipment comprises a multistage spray drying tower, an in-tower fluidized bed, a cyclone separator, a bag-type dust collector, an external fluidized bed, a main tower air supply fan, a main tower air supply filter, a main tower air supply heater, an in-tower fluidized bed air supply fan, an in-tower fluidized bed air supply heater, an internal fluidized bed air supply filter, an external fluidized bed air supply fan, an external fluidized bed air supply heater, an external fluidized bed air supply filter, a bag-type dust collector off-gas exhausting machine, a bag-type dust collector fine-powder air supply fan, a bag-type dust collector fine-powder air supply filter, a main tower star-shaped discharging valve, a bag-type dust collector star-shaped discharging valve, a product powder distributor, a feed feeding and metering pump, a feed solution buffer tank and a waste heat recoverer.

Description

technical field [0001] The multi-stage spray fluidized drying equipment of the present invention relates to an upper exhaust multi-stage spray fluidized drying equipment, which is suitable for various materials with different characteristics such as dairy products, microencapsulated essence, coffee mate, egg yolk powder, fruit and vegetable powder, etc. For ideal drying equipment. Background technique [0002] The current spray drying equipment is a down-flow drying system with upper air inlet and lower air exhaust, which still has the disadvantages of short residence time of hot air, waste of energy and difficulty in preparing dust-free granular materials. The traditional spray drying system with upper air intake and lower air exhaust can only meet the drying requirements for most dry materials with low particle size distribution. The particle size distribution is wide and dust is mixed in one. However, for some dry materials that want to obtain a relatively uniform partic...

AI Technical Summary

Problems solved by technology

However, for some dry materials that want to obtain a relatively uniform particle size distribution of the dry material and do not want a large proportion of dust mixed in the material, the traditional spray drying system with upper air intake and lower exhaust air cannot meet the requirements.

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