Lecture 3 Flashcards
(12 cards)
BFD
Block flow chart: very simple, quick overview
PFD
Process Flow Chart: more details, includes STREAMS AND EQUIPMENT
p&ID
Piping and Instrumentation Diagramm, very detailed EVERY VALVE, PIPING AND CONTROL LOOP
common mistakes (PFD)
- confusing flow paths
- complicated shapes
- Too many crossing lines
- incrorrect mass balance
- use of acronymes
Lines
future —
Major dicke linie
minor dünne Linie
Pneumatic (Luftdruck) ______ mit // //
Hydraulic (Öl) ______ mit LLL
Capillary Tubes _____ mit xxx
Electromagnatic Signal ______ mit Wave
Electric _ _ _ _ _
Pumps
TWO basic principles
1. positive Displacement (Piston and plunger Pump, Gear Pump, Diaphragma Pump, Scre Pump)
2. Dynamic (Cenrifugal Pump (radial/axial/mixed flow)
Cavitation
When pressure drops rapidly –> micro jets catapults liquid against surface and damages it –> causes noise
compensators/ Accumulator
Buffer or Shock obsorber for fluid syste, –> evens out pressure changes caused by pump –> system more smoothly and less risk of damage
Valves
Controlling flow of fluids (start, stop, rate, direction)
z.B.: pinch valves, membrane valves, needle valves, globe valves, gate valves, check valves, safty valves, burst valves)
Rector vessels
- Stirred Tank +process controll - foaming
- Plug flow +high volumtric loading - limited flexibility
- Packed bed +high cell density -difficult scale up
- moving bed +reeduced sluge production -carrier clogging
- airlift reactor +scalability -bubbles collape
- membrane reactor for WastWater Treatment
Seperation Techniques
- Cenrtifuge
- Membrane System (AFT&TFF)
Cooling and heating for bioreactor Systems
- Jacket (most common) even heat distribution, fouling
- External Coil +heat transfer -heat distribution
a. shell: bundle Tubes + wide T&p range -spacy
b. plate: stacked plates +efficiant -fouling - Internal heating rod +maintenance -spot
