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39 terms

Biowork 6

STUDY
PLAY
inputs
are the raw materials chemicalsor organisms , plant utilities and labor to make a product
outputs
are the product and waste that result from the process steps
batch process
starts and stops a fixed amount of material is processed to completion and then another is started
continious process
runs all the time as long as inputs are avalible
seperation and purification
the product is seperated from the waste for the product to reach the correct level of purity it may take several applications
chemical reactions
typically produce an output that contains both product and waste
formulation
converts the bulk product to the form needed by the customer example liquid to granular
growth medium
a broth or soup that nourishes the cells
mass and energy balance
calculations to obtain the actual yield of the reaction
material compatibility
certain types of process fluids interact with particular construction materials so the material used to construct a piece of equipment must be appropriate for the fluid to come in contact with
4 basic types of equipment
tanks , piping , pumps and valves
fluids
anything that flows even solids
agitators
paddles , propellers or blades that turn on a shaft to mix tank ingredients
baffles
vertical plates attached to the tank's interior sides to improve mixing by causing turbulance
cooling or heating coils
coils or tubes mounted inside the tank used to heat or cool contents of the tank
jackets
a partial double wall around the tank that creates a hollow space where heating and cooling fluid can flow
inspection port
clear glass built into the side of the tank at eye level to allow viewing of the contents
manway hatch
allows a technician to enter the tank to clean or inspect it
rupture disc
saftey device built into the tank to prevent it from blowing up
sampling ports
small pipes with valves used to take samples of tank contents
spargers
tubes with tiny holes in them that bubble gas into the tank
spray balls
devices like showerheads used to clean the inside of a tank
inlet outlet valves
control fluid flow into or out of the tank
vents
openings built into the top of the tank through which gases escape to relieve pressure fitted with filters to prevent cotaminants from entering or leaving the tank
transfer panel
is a connection point wher the pipes from several tanks or other sources come together
centrifugal pump
use centrifugal force to move liquid . must be primed generally used in high volume , low pressure applications . Can handle liquids that contain solids or slurries will not handle thick liquids
positive displacement pump
move fluid by picking it up in specific amounts and moving it forward to deliver fluid at high pressure even when flow rates are low . To deliver precise amounts of fluid . Turning on with discharge side valve off will destroy this pump
pumps
are fluid movers in a process
cavitation
the formation of gas pockets in a flowing liquid caused by high temp , low suction , high viscosity , high pump speed
rotary positive displacement pumps
lobe , gear , vane , screw , peristaltic
suction pressure or suction head
is the total pressure on the up stream side of the pump
discharge pressure or discharge head
is the total pressure on the down stream side of the pump
flow control element
controls the flow by its position , fits tightly into the valve seat to stop flow , in some valves is called disc , ball , needle , plug , diaphram , or other term .
on off valves
ball , plug , butterfly and gate
throttling valves
globe and diaphragm
check valve
allows fluid to go in one direction
relief valve
when fluid reaches a preset pressure the valve opens to relieve pressure
static seals
seal connections between non moving parts
dynamic seals
seals connections between moving parts