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[Daily Question] Basic Process Knowledge (Multiple Choice) 20200221

2020-02-21View Original

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The oil-water separation tank at the top of the vacuum tower is generally equipped with an inverted U-shaped tube to prevent siphoning, and the valve at the top of this tube should be (C). A. Shut off when water level is too high B. Shut off during normal operation C. Keep open during normal operation D. Shut off when oil level is too high

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