Vertical-type stock-solution outside tube falling-film evaporator

Abstract

The invention discloses a vertical-type stock-solution outside tube falling-film evaporator. The falling-film evaporator comprises a vertical-type evaporator, a condenser, a heat exchanger, a steam input tube, a steam output tube and a compressor arranged on the steam output tube; the condenser is communicated with a stock solution tube, and the vertical-type evaporator comprises a vertical-type tube, a first steam box, a second steam box, a solution distribution box, a solution distributor, an evaporation chamber, a solution collection box and tube harnesses; the solution distributor comprises a plate and honeycomb holes, and gaps exist between the honeycomb holes and the outer surfaces of the tube harnesses; the second steam box comprises a first cavity and a second cavity, the first steam box comprises a third cavity and a fourth cavity, the condenser is communicated with a condensation water tank, the heat exchanger comprises a first plate-type heat exchanger and a second plate-type heat exchanger which is provided with a condensed water drainage tube communicated with the second plate-type heat exchanger, steam exhausted to a defoamer is secondary steam, and an external steam heat source can be boiler steam or compressor warming secondary steam or industrial waste steam. The vertical-type stock-solution outside tube falling-film evaporator has the advantages of being wide in application range, not prone to scaling and convenient to clean and achieving condition monitoring conveniently.

Description

technical field [0001] The invention belongs to the field of solution evaporation, in particular to a vertical falling film evaporator outside a stock solution tube. Background technique [0002] At present, evaporators on the market are divided into rising film type, falling film type and rising film type evaporator according to the material flow mode. Among them, the material liquid evaporated by the rising film evaporator and the falling film evaporator all flows in the tube. However, it is not suitable for the raw liquid with high requirements on the composition of the raw liquid and the evaporation of the raw liquid with relatively high viscosity, and the above raw liquid is evaporating The fouling tendency of the process is large, and it is not easy to clean. Contents of the invention [0003] In view of the above problems, the object of the present invention is to provide a vertical falling film evaporator outside the raw liquid tube that is widely used, is not eas...

AI Technical Summary

Problems solved by technology

Among them, the material liquid evaporated by the rising film evaporator and the falling film evaporator all flows in the tube. However, it is not suitable for the raw liquid with high requirements on the composition of the raw liquid and the evaporation of the raw liquid with relatively high viscosity, and the above raw liquid is evaporating Large tendency of fouling in the process, difficult to clean

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