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Sarkari MCQs Government Exam Question Bank
Question no. 8033

Optimal reactor performance for units running in parallel is achieved when the feed is split such that_________________?

Select your answer for: Optimal reactor performance for units running in parallel is achieved when the feed is split such that_________________?
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Answer: A. Space time for each parallel line is same

Explanation

Space time represents the ratio of reactor volume to volumetric feed rate entering the processing unit. Identical space times across parallel reactor lines ensure equal residence times and uniform conversion profiles. Splitting the feed to maintain uniform space time optimizes overall system performance and product yield. Parallel reactor configurations split a large feed stream into multiple smaller parallel processing lines. Space time measures the time required to process one reactor volume of feed at specified conditions. Consistent residence times prevent uneven conversion distribution across parallel industrial processing trains.

Large scale chemical plants frequently employ parallel reactor trains to handle massive volumetric flow rates safely. Maintaining balanced feed distribution prevents overloading individual reactor units and ensures stable product quality. Scale up strategies often replicate proven parallel reactor modules rather than designing massive single vessels. Option B suggests differing space times, which would cause uneven conversions and substandard mixed product streams. Option C proposes arbitrary sizing differences, leading to unbalanced residence times and reduced overall efficiency. Option D is incorrect because matching space time across all parallel lines is the established optimization criterion.

Subject
Engineering
Category
Chemical Engineering
Topic
—
Difficulty
medium

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