ENGR 1166 Chapter Notes - Chapter 5: Process Flow Diagram, Process Variable
19 Apr 2017
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Document Summary
Mass balance - used to describe component or atomic composition of a process. Process - operation that change physical or chemical makeup of a substance or a mixture. Process flow diagram (pfd) - illustrates a process simple pdf multi-feed pdf multiproduct pdf multiprocess pdf. Batch - load everything you want, perform the process, load everything out. Continuous - continuously feed the components to perform process and continuously load everything out. Semibatch - don"t fit in either above categories. Steady state - all process variables are constant. Transient (unsteady state) - one or more variables changes with time. Input - output + generation - consumption = accumulation. Input - what comes into the system. Generation - what is made within the system. Consumption - what is consumed within the system. Accumulation - what remains in the system. Steady state process accumulation = 0. Non reactive and non-sorbing generation = consumption = 0. Total mass balance generation = consumption = 0.
