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Published byJerome Thornton Modified over 8 years ago
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Last Week of Project Terry A. Ring
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Project Schedule
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Reactor/HX Feed water to shell Level Control is required Demineralized water Tubing sold in 20 ft (6 m) sections Costing max = 1,000 m^2 tube area (2,300 1 inch tubes, 1.7 m diameter shell) Multiple reactor units In parallel to account for larger flow rates In series to make it a longer reactor Ergun Equation for ΔP DI Water
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Loop Flow Maintain Purge of Impurities N 2 CH 4 Minimize the Flow in Loop Loop equipment minimized Loop utilities minimized Recycle Purge
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Separation System Flash 1 – Produce Max Liquids Controlled by Temperature at CW HX Lowest Temp possible with CW is about 120F (58C) What are you trying to separate??? Dimethyl either Some Methyl Formate Flash 2 – Max Impurity Removal Controlled by Flash Pressure Pressure Controller fed back to control valve Methyl Formate in Vapor Distillation Column 1 Partial Condenser Methyl Formate in Vapor Bottoms Water & all alcohols Distillation Column 2 Methanol at desired purity Bottoms of Column 2 – water and butanol To waste water treatment Alcohols will kill bugs in city waste water treatment plant Flash Unit Sizing See your book for equations for diameter L/D=3 Cost Pressure Vessel Distillation Sizing Height = 1 ft/ tray, weir height = 2 inches Diameter Tray Efficiency use figure Flooding factor 75-90% Distillation Column Costing Trays or packing – Table 7.2 in T&S Book Pressure Vessel – Table 7.2 in T&S Book Do not for get heads Platforms (see lecture notes) Condenser Reboiler Pumps for liquids
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Separation Problem ComponentsBP(C) CO CO2 N2 H2 CH4 H2O100C Methanol65C Dimethyl ether-24C Methyl formate32C N-Butanol117C (n) 98C (2-butanol) 83C(t-butanol) 107C(i-butanol) HP/LP Flash System
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Materials of Construction Water wet Surfaces need Stainless Steel, tc=1/16 inch Hot Dry Surfaces = Carbon Steel, tc= ¼ inch
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P&IDs One for each piece of major equipment If you need to use multiple Reactors or HX then all units are shown on P&ID Information on P&ID Sensors with alarms Control System – type of controller Control Valve (fail open or closed) Material Breaks Safety System Active Pressure relief System Sensor (alarms), Valves (fail??) Mechanical pressure relief backup system
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Report Content See Articles Formal Design Report.pdf Page Limits (Contest Problem) Main Report 125 pages or less Supplementary Material 100 pages or less
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