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One of the ways that benzene is produced on a large scale is the hydrodealkylation of toluene. CH₂CH3 + H₂ ->>> • CoHo +CH_ A stream of toluene is mixed with a recycle stream and enters a reactor along with a stream of pure hydrogen. The reaction products at 550 °C enter a condenser, where they are cooled to 43.0 °C. A vapor stream containing YSCH, = 0.530 mol CH₂/mol leaves the process, and a liquid stream containing x6b = 0.740 mol benzene/mol and x6 = 0.260 mol toluene/mol enters a distillation column. The distillate of the column leaves the process at n = 781.0 mol/h and contains y7b=0.9300 mol benzene/mol and y7= 0.0700 mol toluene/mol. The bottoms of the column contains X8b = 0.240 mol benzene/mol and x8t = 0.760 mol toluene/mol and is recycled back to the fresh feed. Hydrogen is fed into the process at n₁ = 1710 mol H₂/h. This process is carried out at 760 mmHg.

One of the ways that benzene is produced on a large scale is the hydrodealkylation of toluene. CH₂CH3 + H₂ ->>> • CoHo +CH_ A stream of toluene is mixed with a recycle stream and enters a reactor along with a stream of pure hydrogen. The reaction products at 550 °C enter a condenser, where they are cooled to 43.0 °C. A vapor stream containing YSCH, = 0.530 mol CH₂/mol leaves the process, and a liquid stream containing x6b = 0.740 mol benzene/mol and x6 = 0.260 mol toluene/mol enters a distillation column. The distillate of the column leaves the process at n = 781.0 mol/h and contains y7b=0.9300 mol benzene/mol and y7= 0.0700 mol toluene/mol. The bottoms of the column contains X8b = 0.240 mol benzene/mol and x8t = 0.760 mol toluene/mol and is recycled back to the fresh feed. Hydrogen is fed into the process at n₁ = 1710 mol H₂/h. This process is carried out at 760 mmHg.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
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One of the ways that benzene is produced on a large scale is the hydrodealkylation of toluene. CH, CH3 + H₂ CH+CH A stream of toluene is mixed with a recycle stream and enters a reactor along with a stream of pure hydrogen. The reaction products at 550 °C enter a condenser, where they are cooled to 43.0 °C. A vapor stream containing y5CH, = 0.530 mol CH₂/mol leaves the process, and a liquid stream containing x6b = 0.740 mol benzene/mol and x6 = 0.260 mol toluene/mol enters a distillation column. The distillate of the column leaves the process at n = 781.0 mol/h and contains y7b = 0.9300 mol benzene/mol and y7t = 0.0700 mol toluene/mol. The bottoms of the column contains X8b = 0.240 mol benzene/mol and xgt = 0.760 mol toluene/mol and is recycled back to the fresh feed. Hydrogen is fed into the process at n₁ = 1710 mol H₂/h. This process is carried out at 760 mmHg. Macmill ->>
Transcribed Image Text:One of the ways that benzene is produced on a large scale is the hydrodealkylation of toluene. CH, CH3 + H₂ CH+CH A stream of toluene is mixed with a recycle stream and enters a reactor along with a stream of pure hydrogen. The reaction products at 550 °C enter a condenser, where they are cooled to 43.0 °C. A vapor stream containing y5CH, = 0.530 mol CH₂/mol leaves the process, and a liquid stream containing x6b = 0.740 mol benzene/mol and x6 = 0.260 mol toluene/mol enters a distillation column. The distillate of the column leaves the process at n = 781.0 mol/h and contains y7b = 0.9300 mol benzene/mol and y7t = 0.0700 mol toluene/mol. The bottoms of the column contains X8b = 0.240 mol benzene/mol and xgt = 0.760 mol toluene/mol and is recycled back to the fresh feed. Hydrogen is fed into the process at n₁ = 1710 mol H₂/h. This process is carried out at 760 mmHg. Macmill ->>
What are y5b and y5t, the mole fractions of benzene (b) and toluene (t), respectively, in the vapor stream leaving the condenser NO Y5b= Y5t = What is n2, the flow rate of fresh toluene into the process? n₂ = What is ng, the flow rate of the recycle stream? mol b/mol mol t/mol mol t/hr
Transcribed Image Text:What are y5b and y5t, the mole fractions of benzene (b) and toluene (t), respectively, in the vapor stream leaving the condenser NO Y5b= Y5t = What is n2, the flow rate of fresh toluene into the process? n₂ = What is ng, the flow rate of the recycle stream? mol b/mol mol t/mol mol t/hr
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