Horizontal shell-and-plate falling film anti-scale evaporator and application method thereof

Abstract

The invention provides a horizontal shell-and-plate falling film anti-scale evaporator and an application method thereof. A heat transfer plate bundle of the horizontal shell-and-plate falling film anti-scale evaporator comprises multiple heat transfer plates which are parallel to one another and vertically arranged side by side to form the heat transfer plate bundle, and ultrasonic vibration transfer rods are arranged on the heat transfer plate bundle; and the ultrasonic vibration transfer rods are perpendicular to the heat transfer plate bundle, one end of each ultrasonic vibration transfer rod is connected with an ultrasonic transducer, wherein multiple communicated rhombic cavities are formed in the two sides of each heat transfer plate, and the rhombic cavities between the adjacent heat transfer plates are arranged in an up-and-down staggered mode. The rhombic cavity at the bottom of one side of each heat transfer plate is a steam inlet, and the rhombic cavity at the bottom of the other side of each heat transfer plate is a condensed water outlet. According to the horizontal shell-and-plate falling film anti-scale evaporator and the application method thereof, the evaporation efficiency is effectively improved by adopting the special-shaped rhombic cavities with large upper parts and small lower parts, and the heat transfer plates always keep high-frequency low-amplitude fluctuation in the operation process by combining scraper blades with the ultrasonic vibration transfer rods, so that the online scale prevention and removal capability is realized. The evaporator and the application method thereof are wide in application range and simple and stable in structure.

Description

technical field [0001] The invention relates to a horizontal tube falling film evaporator, in particular to a horizontal plate and shell type falling film anti-scaling evaporator and an application method thereof. Background technique [0002] Horizontal tube falling film evaporation technology is a high-efficiency heat transfer technology that utilizes the double-sided phase transition of evaporation of solution outside the diamond-shaped cavity and condensation of steam inside the tube to generate heat transfer. It has good heat transfer performance, small heat transfer temperature difference loss, and is easy to realize multiple effects. It has the advantages of high operation and evaporation intensity, especially under small heat flux density and small temperature difference, it still has a high heat transfer system, and its heat transfer coefficient is more than 5 times higher than that of submerged pool boiling, and 1 higher than that of vertical tube falling film evapo...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a horizontal plate-shell type falling film anti-scaling evaporator, which can effectively solve the problems of bias flow, liquid film splashing, rapid discharge of condensed water, online efficient anti-scaling and enhanced heat transfer.

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