Triple-effect evaporator

Abstract

The invention provides a triple-effect evaporator. The triple-effect evaporator comprises an upper barrel, a middle barrel and an evaporation cylinder provided with a power mechanism at the bottom, wherein a swirling demister is arranged on the bottom of the upper barrel; the middle barrel is internally provided with a gas-liquid separator fixedly arranged on annular bracket which is mounted on the inner wall surface of the middle barrel; the side wall of the middle barrel is provided with a steam pipe integrally and vertically passing through the evaporation cylinder and having ports and a non-condensable gas exhaust pipe extending into the evaporation cylinder and used for discharging non-condensable gas; the evaporation cylinder is provided with two horizontally arranged partition plates; an annular pipe chamber allowing the steam pipe to pass through is formed between the two partition plates; a cylindrical cavity having two opened end is formed inside the annular pipe chamber; andthe cylindrical cavity is used for accommodating two double-layer three-blade scraping plate devices arranged along a vertical direction. The triple-effect evaporator disclosed by the invention is improved in concentration evaporation effect on materials and increased in the utilization rate of steam, avoids the accumulation of coke or dirt, and overcomes the problem that conventional natural circulation evaporators need regular cleaning.

Description

technical field [0001] The invention relates to the technical field of chemical equipment, in particular to a three-effect evaporator. Background technique [0002] In chemical, pharmaceutical, food, grain deep processing, beverage, environmental protection engineering, waste liquid evaporation recovery and other industries, such as concentrated extraction of traditional Chinese medicine, western medicine, starch, monosodium glutamate, dairy products, glucose, oligosaccharides, sorbitol, fruit and vegetable juices, or Evaporation and concentration of concentrated aqueous solutions of chemical and other aqueous solutions and organic solutions, evaporation of salty wastewater in waste liquid evaporation recovery, separation of salt and water and heating of solutions to boiling, etc., all require the use of evaporators for evaporation operations, so that The material (usually a solution) is concentrated, evaporated, and crystallized to obtain the final product. [0003] The Ch...

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Problems solved by technology

[0005] The purpose of the present invention is to disclose a three-effect evaporator, which is used to solve the limitation that the traditional natural circulation evaporator cannot handle heat-sensitive substances, avoid coking, scaling and other undesirable phenomena on the inner wall of the evaporator, and at the same time improve Efficient use of energy to reduce usage costs

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