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Research on Heat Transfer Technology Built-in the Distillation Device of Acrylic Acid

Author: YangWenDe
Tutor: LiMin；WangFuLi
School: Northeast University of Petroleum
Course: Mechanical Engineering
Keywords: acrylic acid distillation process heat exchanger plate heat exchanger
CLC: TQ225.131
Type: Master's thesis
Year: 2010
Downloads: 143
Quote: 0
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Abstract


In the process flow of produce acrylic acid we can separate the crude acrylic acid from extracting agent through distillation. Acrylic acid have heat sensitivity, easy to dimerization and polymerize. Dimerization cause wastage about the product, polymerize cause the choke in device.The technical essential about callback technics and refine technics, stop the side reaction through gentle operational condition(reduced pressure distillation), special tower tray,special design about the cooling system and add polymerization inhibitor.This paper base on special requirements about produce acrylic acid, combine the cooler and tower to be one system, form a tower have a built-in cooler, achieve one device have two technics and function together.This paper demonstrate the purpose and significance about study on built-in cool technology in acrylic acid produce technics, analysis and research the built-in cool technology solutions.Analyse and contrast the structure, function and characteristic about various heat exchanger, consider the characteristic about the medium flow in the tower, the conclusion is the plate heat exchanger is the most suited.As the built-in heat exchanger seek the way that in a small space arrange heat transfer area as much as possible, in order to improve the heat transfer efficiency and reduce cost. According to the technical requirements and heating medium parameters, through the research and application of new heat surface, design the built-in efficient plate heat exchanger on the top of the rectifying tower. To calculate the heat and resistance about the heat exchanger, given the built-in heat exchanger with heat exchanger area and structure size.Research results show that through the built-in cooler in rectifying tower can realize the gas cooling and separation on the top of the acrylic device, the process program is workable, can reduce the loss of the vacuum system, raise the economical efficiency about the device, research and design of the built-in heat exchanger can meet the technological requirements.

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CLC: > Industrial Technology > Chemical Industry > Basic Organic Chemistry Industry > The production of aliphatic compounds ( acyclic compounds) > Aliphatic carboxylic acid and its derivatives > Fatty acids and their derivatives > Unsaturated monobasic acid > Acrylic acid
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