Chemical Engineering :: Process Equipment and Plant Design
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Fresh water carrying pipelines in chemical industries are coloured with __________ color.
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Which of the following material is seldom used for pressure vessel construction ?
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The ratio of shear stress to shear strain is called
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25 per cent cut segmental baffle means that the baffle
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Liquid/petroleum fuel storage tanks are built underground (as in case of petrol pumps), when the storage capacity is less than __________ kilolitres.
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Lug support is
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Pick out the wrong statement pertaining to the use of valve tray, seive tray and bubble cap trays in continuous distillation column.
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With increase in the number of shell passes, the value of FT
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Holes of a sieve tray are arranged in triangular pitch of __________ times the hole diameter.
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for fully open globe value may be around|
A.
Bubble cap trays though most expensive are the best in situations, where low vapour rates is to be handled and a positive liquid seal is essential at all flow rates.
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B.
Murphree efficiency of all the three trays are nearly equal, however the peak efficiency is generally higher for seive and valve trays than the bubble cap.
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C.
Maintenance cost for valve and seive trays are comparatively more than bubble cap tray due to their relatively complicated construction features.
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D.
Valve trays have the highest turn down ratio (i.e. the ratio of the highest to the lowest vapour flow rates) and thus provides the maximum flexible operating range.
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