Process Equipment and Plant Design Back-trapping in a distillation column results due to Excessive liquid gradient over the tray Low gas velocity Low reflux ratio High gas velocity Excessive liquid gradient over the tray Low gas velocity Low reflux ratio High gas velocity ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In case of bubble cap distillation column of diameter greater than 1.2 metres, the cap diameter is roughly about __________ cms. 30 10 35 20 30 10 35 20 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In a shell and tube heat exchanger having square pitch, the shell side equivalent diameter is given by (where, P = pitch, d = outside diameter of the tube) 4P²/πd (P² - πd²/4)/πd Πd/4P² 4(P² - πd²/4)/πd 4P²/πd (P² - πd²/4)/πd Πd/4P² 4(P² - πd²/4)/πd ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design With increase in the reflux ratio for a fixed production from a continuous binary distillation column, the __________ decreases. Vapour & liquid load both Fixed charges initially Running cost of steam for reboiler Running cost of cooling water for condenser Vapour & liquid load both Fixed charges initially Running cost of steam for reboiler Running cost of cooling water for condenser ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In perforated plate towers, the Pressure drop is less compared is similar bubble cap towers Hole sizes may be around 1/8" or 3/16" Total hole area may be around 6 to 15% of tower cross-sectional area All of these Pressure drop is less compared is similar bubble cap towers Hole sizes may be around 1/8" or 3/16" Total hole area may be around 6 to 15% of tower cross-sectional area All of these ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design For turbine agitator, the impeller diameter is about 0.65 to 0.85 d 0.3 to 0.5 d 0.95 d 0.1 to 0.2 d 0.65 to 0.85 d 0.3 to 0.5 d 0.95 d 0.1 to 0.2 d ANSWER DOWNLOAD EXAMIANS APP
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