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Selection of core unit for air separation unit

Selection of core unit for air separation unit
The selection of core unit of air separation unit is very important to the normal operation of air separation unit, and also the guarantee of air separation unit reliability. In the one-time investment and operation consumption, how to select the unit configuration for specific customers is of great significance to the investment of air separation unit. However, how to improve the efficiency of localization core unit and reduce energy consumption is an important issue for domestic enterprises.
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1.The cold box foundation is divided into frame type and non frame type. The levelness of top surface of frame type frame shall not exceed 1 / 1000. All sections of the frame shall be placed vertically. All bottom plates of non frame type cold box shall be kept at the same level, and the levelness shall not exceed 1 / 1000.   2.When installing the cold box plate, the adjacent two sides can beassembled into a whole piece or angle type on the ground. The length error of each diagonal line a...
Dec 23, 2020
When the air separation unit is in normal operation, the liquid flows down and can only flow on the tray and flow to the lower tray through the overflow bucket because the supporting force of the rising steam prevents the liquid from flowing down from the small hole of the tray. After shutdown, due to the interruption of rising gas flow, the liquid on the tray can flow from the overflow bucket to the lower tray, and also can flow through the small hole on the tray to the lower tray. This will cause the surface of liquid oxygen and liquid air rise, which may exceed the position of the expansion air outlet pipe, resulting in liquid carrying accident of the expander during restart. Therefore, pay attention to the liquid level position when stopping.
Dec 16, 2020
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