08 — Chemical Engineering & Chemistry
Solid in Air Diffusion Apparatus
Diffusion tube assembly in which a volatile solid sublimes into a controlled air stream at constant temperature. The rate of loss is used to calculate the diffusion coefficient of the vapour in air.
01 — Same Category
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Pan Evaporator
Open pan evaporation unit with heating arrangement and instrumentation for concentrating dilute solutions. Used to measure evaporation rate and to carry out material and energy balances on an evaporating system.
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Single Effect Evaporator
Single-stage evaporator with steam-heated calandria, vapour separator and condenser for concentrating a feed solution. Used to determine evaporator capacity, steam economy and the overall heat transfer coefficient.
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Continuous Packed Bed Distillation Column
Packed column operated with continuous feed, reboiler, total condenser and reflux control for continuous binary separation. Used to determine HETP, the effect of reflux ratio and mass transfer performance of the packing.
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21
Experimental Water Cooling Tower
Bench-scale packed cooling tower with fan, heated water circulation and wet and dry bulb instrumentation. Used to determine cooling range, approach, tower efficiency and the effect of air and water flow rates.
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22
Forced Draft Tray Dryer
Insulated drying chamber with heaters, circulating fan and weighed sample trays for batch drying of solids in a controlled air stream. Used to plot drying rate curves and to identify constant rate and falling rate periods and critical moisture content.
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24
Humidification & Dehumidification Setup
Air-water contacting column with blower, water spray or packing and heating and cooling sections, fitted with wet and dry bulb thermometers. Used to study humidification and dehumidification of air and to apply psychrometric chart calculations.
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25
Liquid-Liquid Extraction in Packed Column
Counter-current packed extraction column in which a solute is transferred between two immiscible liquid phases. Used to determine distribution coefficients, stage efficiency and HTU/NTU for the packing.
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26
Isothermal Continuous Stirred Tank Reactor (CSTR)
Jacketed, agitated tank reactor operated at constant temperature with continuous feed and overflow. Used to determine the rate constant of a liquid-phase reaction and to study conversion as a function of space time at steady state.
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27
Isothermal Plug Flow Reactor (PFR), Constant Head, Coiled Tube Type
Coiled tube reactor fed from constant head tanks and immersed in a thermostatic bath to maintain isothermal operation. Used to study conversion against residence time in plug flow and to compare performance with a stirred tank reactor.
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28
Isothermal Batch Reactor
Stirred, temperature-controlled batch vessel with sampling arrangement for following the progress of a liquid-phase reaction with time. Used to determine reaction order, rate constant and activation energy from concentration-time data.
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29
Isothermal Continuous Stirred Tank Reactor, Compressed Air Feed System
Isothermal CSTR in which the reactant streams are delivered from pressurised feed vessels using compressed air instead of pumps, giving steady pulseless flow. Used for steady-state kinetic studies and conversion versus space time measurements.
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