Question 58General Subjects - 1st Asst/Chief70% to pass
The thickest deposit of scale in a flash evaporator is most likely to occur in the tubes of the _______________.
AI Explanation
The correct answer is A) salt water feed heater.
The thickest deposit of scale in a flash evaporator is most likely to occur in the tubes of the salt water feed heater. This is because the salt water feed heater is the first component where the seawater enters the system, and it is here that the most mineral-rich and hottest water is found. As the water is heated in the feed heater, the minerals and salts dissolved in the water begin to precipitate out, forming a thick scale deposit on the inside of the tubes.
The other options are incorrect because the distillate cooler, first-stage condenser, and flash chamber handle water that has already been processed and has a lower mineral content, so scale buildup is less likely to occur in these components.
Related Questions
#56 Which of the valve arrangements listed would be correct for operating the distillation plant shown in the illustration? Illustration MO-0111 #57 Which of the following statements describes the approximate relation between the feed water entering the unit shown in the illustration and brine being removed? Illustration MO-0111 #59 The efficiency and output capacity of a low pressure distilling plant will be reduced if the last effect shell _______________.#60 In a flash evaporator, scale as a result of higher than normal temperatures is most likely to occur in the _______________.#61 Which of the listed problems could produce a high absolute pressure within a flash type evaporator?