Chemical Unit Operations Dewi TristantiniWidodo W.
PurwantoDepartemen Teknik KimiaUniversitas IndonesiaLecture -4
Course Content What is unit operationDescription of unit
process
Flowsheeting of Chemical Plant
What is Unit Operations (1)Chemical unit operations is the
basics for any newly graduated chemical engineer, this is the first
step to understand the chemical engineering. Basically this is
consist of the Heat transfer, Mass transfer, Momentum transfer and
reactors
What is Unit Operations (2)
A unit operation is any part of potentially multiple-step
process which can be considered to have a single function.
Examples of unit operations include:Separation Processes
Purification Processes Mixing Processes Reaction Processes Power
Generation Processes Heat Exchangers Transport processes
Chemical StateRatesPhase (L,S,G, G-L, G-S, L-S, L-L,
G-L-S)T&P Chemical Reaction Separations/Phase separation Movers
Heat exchange Mixing and splitting
Process and Equipments
ReactorsSeparators
Compressors, Pumps, Turbine, Expander, ValvesHeat Exchangers,
Process HeatersMixers, Splitters
SeparationsAdsorption- Adsorbent selectivity greater than 2 for
bulk separations and greater than 10-100 for purifications- High
percentage solute removal- Acceptable delta loadings- Adsorbent not
susceptible to rapid fouling- Bed(s) easily regenerable- Clean
air/water projects
Membranes Membrane selectivity greater than 10 (except for air
separation)- Bulk separation, clean air/water projects and some
trace removal- Acceptable fluxes- Membrane chemically stable-
Membrane not susceptible to rapid fouling- Low to moderate feed
rates
Assignment IVShort presentation - unit operation/student group
Content: what is?, brief description and photo
