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Question 1 In the reactor-recycle scheme shown opposite, vapour feeds A and B react to make a less volatile component C which is removed as bottoms in distillation. A is maintained in excess, so that effectively all of the B is consumed in passing through the reactor. Show a control scheme which: (a) has the B feed on flow control (b) maintains loop pressure by A addition (c) maintains a setpoint flow ratio of A and B to the reactor (d) controls upper and lower temperatures in the column, and the accumulator and bottom levels. (e) pinches the steam to ensure a minimum bottom level A feed compressor 1 distillation column reactor B feed steam