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Application of roots water ring vacuum pump group in butyl acrylate device

Release date:2016-08-12 Author: Click:

 

Refining unit of vacuum system for existing butyl acrylate device using the steam jet vacuum pump, operation cost is higher, and the influence factors of vacuum fluctuations caused more the situation, to study the feasibility of using other vacuum equipment replacement, mainly studied the application of roots - water ring vacuum pump, and economy analysis, provide a reference for devices of the future.



Because of butyl acrylate (BA) containing vinyl this property, when external conditions change, such as temperature, residence time increases, rising concentrations, phase change, initiator, etc.) are prone to aggregate, which is especially great for the influence of the polymerization, the rise of temperature, BA refined system adopt the reduced pressure distillation, such as pressure BA's boiling point is 146 ℃, while 2.0 kPaA for 43 ℃, the boiling point of the slash effectively inhibit the aggregation. As the vacuum degree requirement is relatively low, steam jet pump is adopted as the vacuum extraction equipment in the existing refining system of BA device.



With the continuous rise of steam cost, the operating cost of BA device also rises. Besides, steam jet pump is adopted, and there are many factors influencing vacuum fluctuation (such as steam pressure fluctuation, nozzle blockage, atmospheric leg, etc.). For this reason, the manufacturer of roots water ring vacuum unit (central China vacuum) has published this paper, which mainly studies the scheme of using roots water ring vacuum pump group to vacuum the refining system of BA device, and provides references for future transformation.




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