Macmillan Learning The cumene process is used to convert benzene and propene in the presence of...

  

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Macmillan Learning The cumene process is used to convert benzene and propene in the presence of oxygen to phenol and acetone via the reaction CH+CH+0,CH,OH+CHO This reaction is carried out with excess benzene and excess oxygen to ensure that no side reactions occur. A 1.15 ratio of benzene to propene is fed to a reactor in the presence of 29.5% excess air (N2 and O2). The first pass conversion of propene is 100%. The products leave the reactor and enter a condenser where the gaseous nitrogen and oxygen leave the process and the liquid organic products are fed to a distillation column. The distillation column separates the products from the reactants. Any unreacted reactants are fed into the fresh feed stream. The products are directed to a second distillation column that separates the acetone from the phenol. If 23.3 kg/hr of phenol is produced from this process, answer each of the questions. First, label the process flow diagram, putting either a given numeric value or the words "unknown" or "none" in each space. Do not leave any spaces blank. Variable names are shown for reference later. n mol/hr mol C H/mol mol CH/mol Fresh feed Reactor feed n = n = n= mol/hr mol/hr mol/hr mol/hr Distillation Reactor Condenser column 1 x = x= mol C.H/mol mol C. Ho/mol mol gas/hr mol C,H/mol mol CH/mol mol O/mol mol O/mol mol O/mol mol N/mol mol C,H,O/hr mol N/mol mol N/mol Answer Bank unknown 23.3 0.21 0.79 1.15 none 29.5 mol/hr mol C,HO/mol mol CHOH/mol Distillation column 2 n mol C HOH/hr kg CHOH/hr What is 1, the molar flow rate of fresh feed into the process? What are the mole fractions of CH (x1), CH, (x2), O (x3), and N2 (x4) in the fresh feed stream? x= x2= x3= x4= What is no n = the molar flow rate of the recycle stream? mol/hr mol CH/mol mol CH/mol mol O/mol mol N/mol mol/hr Macmillan Learning The cumene process is used to convert benzene and propene in the presence of oxygen to phenol and acetone via the reaction CH+CH+0,CH,OH+CHO This reaction is carried out with excess benzene and excess oxygen to ensure that no side reactions occur. A 1.15 ratio of benzene to propene is fed to a reactor in the presence of 29.5% excess air (N2 and O2). The first pass conversion of propene is 100%. The products leave the reactor and enter a condenser where the gaseous nitrogen and oxygen leave the process and the liquid organic products are fed to a distillation column. The distillation column separates the products from the reactants. Any unreacted reactants are fed into the fresh feed stream. The products are directed to a second distillation column that separates the acetone from the phenol. If 23.3 kg/hr of phenol is produced from this process, answer each of the questions. First, label the process flow diagram, putting either a given numeric value or the words "unknown" or "none" in each space. Do not leave any spaces blank. Variable names are shown for reference later. n mol/hr mol C H/mol mol CH/mol Fresh feed Reactor feed n = n = n= mol/hr mol/hr mol/hr mol/hr Distillation Reactor Condenser column 1 x = x= mol C.H/mol mol C. Ho/mol mol gas/hr mol C,H/mol mol CH/mol mol O/mol mol O/mol mol O/mol mol N/mol mol C,H,O/hr mol N/mol mol N/mol Answer Bank unknown 23.3 0.21 0.79 1.15 none 29.5 mol/hr mol C,HO/mol mol CHOH/mol Distillation column 2 n mol C HOH/hr kg CHOH/hr What is 1, the molar flow rate of fresh feed into the process? What are the mole fractions of CH (x1), CH, (x2), O (x3), and N2 (x4) in the fresh feed stream? x= x2= x3= x4= What is no n = the molar flow rate of the recycle stream? mol/hr mol CH/mol mol CH/mol mol O/mol mol N/mol mol/hr