Lecture 4 Flashcards
why does the volumetric flowrate remain constant in liquid phase reactions
liquid is incompressible
who may the volumetric flowrate change in gaseous reactions
gas phase reactions may involve changes in temperature or changes in pressure,
in a gas phase reaction, if the total no of moles changes then the volume will also change
why would the change in volumetric flowrate affect our calculations
because it affects our residence time
tau=VR/ vT
does a change in volumetric flowrate have a positive or negative effect on conversions
it depends??
what is residence time
it is essentially how long it takes for the component to move through the reactor:
𝜏=𝑉𝑅/𝑣𝑇
why cant we use residence time with changing volumetric flowrates
changing volumetric flow rates causes a bit of a problem as the value will be different throughout the reactor. To resolve this, space time is defined:
what is space time
𝜏=𝑉𝑅/𝑣𝑇,0
