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Automatic cleaning type falling-film evaperator

A falling-film evaporator and automatic cleaning technology, applied in evaporation, chemical instruments and methods, separation methods, etc., can solve problems such as large economic losses, inability to perform online cleaning, etc., to reduce economic losses, reduce energy consumption, and improve thermal efficiency. Effect

Inactive Publication Date: 2003-01-22
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved in the present invention is to disclose a self-cleaning falling film evaporator, so as to overcome the defects of inability to perform online cleaning in the prior art, thus resulting in large economic losses

Method used

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  • Automatic cleaning type falling-film evaperator
  • Automatic cleaning type falling-film evaperator
  • Automatic cleaning type falling-film evaperator

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Experimental program
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Embodiment Construction

[0019] see figure 1 with image 3 , the automatic cleaning type falling film evaporator of the present invention comprises an evaporator and a cleaning device.

[0020] It can be seen from the figure that the evaporator is a vertical basket-shaped container, the upper part of the container is provided with a feed liquid distributor 15, the lower part of the container is provided with an upper tube sheet 11, the lower part of the container is provided with a lower tube sheet 4, the upper tube sheet 11 and The lower tube plate 4 is symmetrically opened with a plurality of longitudinal channel holes and one transverse channel hole, the longitudinal channel holes and the transverse channel holes form a “king” character, and the channel holes of the upper tube plate 11 and the channel holes of the lower tube plate 4 are connected There is a falling film heat exchange evaporation plate 6, the cavity between the upper tube plate 11 and the channel hole of the lower tube plate 4 is t...

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Abstract

The automatic cleaning type falling-film evaporator includes one evaporator and one cleaning device. The evaporator includes one evaporating chamber comprising upper perforated plate, lower perforated plate and falling-film heat-exchanging evaporating plate and one heating chamber. The cleaning head comprising hollow rubber eraser and its fixing frame is embedded into the evaporating chamber. When the hollow rubber eraser is filled with pressurized air to expand, its outer side contacts tightly with the inner wall of the evaporating chamber. The cleaning head connected to the motor moves vertically to clean the falling-film heat-exchanging evaporating plate ane the cleaning device operates independently from the evaporating process in the evaporator. Cleaning the heat exchanging area can reduce its heat resistance, raise its heat efficiency and reduce power consumption.

Description

technical field [0001] The invention relates to an evaporator, in particular to a falling film heat exchange evaporator which can automatically clean the heat exchange surface while working. Background technique [0002] Falling film heat exchange evaporators are widely used in petrochemical industry, food industry, pharmaceutical industry, paper industry, environmental protection and seawater desalination and other industrial fields. After long-term use, dirt will be generated on the heat exchange surface of the evaporator, which will reduce the heat transfer coefficient, increase the required heat transfer area of ​​the equipment, increase equipment investment, increase frictional resistance, and increase steam consumption. The driving force increases. [0003] Existing method for removing dirt mainly adopts artificial, mechanical method or chemical method to clean after parking and dismantling. resulting in reduced production losses. The online non-disassembly cleaning...

Claims

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Application Information

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IPC IPC(8): B01D1/22
Inventor 秦玉尧
Owner EAST CHINA UNIV OF SCI & TECH
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