Question 1: Reactor Selection and operating conditions 20 marks A+BDA+BUr1A=10exp(8000TK)CACBr2A=10exp(1000TK)CA21CB32 1. What reactor type and conditions would you choose to maximise SD/U ? Clearly explain your answer. [5] 2. What temperature would you recommend to maximise the overall selectivity for CAO=CBO=1dm3mol? Hint :Plot SD/U vs temperature [15] Question 2 : Reactor Selection and operating conditions 20marks When aqueous A and aqueous B(CAO=CBO) are brought together they react in two possible ways: A+BR+TA+BS+UrR=50CAm3hrmolrS=100CBm3hrmol to give a mixture whose concentration of active components (A,B,R,S,T,U) is Ctotal=CAO+CBO=80dm3mot, Find the size of the reactor needed for 80% conversion of the equimolar feed of FAO=FBO=400mol/hr a) In a CSRT [7] b) In a plug flow reactor [13] The following liquid-phase reactions were carried out in a CSTR at 400K : 3AB+C2C+A3D4D+3C3Er1A=k1ACAr2D=k2DCC2CAr3C=r3E=k3EcCCD Given : a) What are r1A,r2A and r3A ? [5] b) What are r1E,r2E and r1B ? [4] c) What are r1C,r2C and r3C ? [5] d) What are r1D,r2D and r3D ? [3] e) What are r1E,r2E and r3E ? [3] f) What are the net rates of formation for A,B,C,D and E? [5] f) What are the net Tates of formation for A,B,C,D and E ? g) The entering volumetric flow rate of 100mindmx and the entering concentration of A is 5M. What is the CSTR reactor volume? [5]