mass balance

Question 1

Recycle:

Answer 1

The return of either part or whole of a process stream to an upstream plant unit.
Common in non reactive systems to conserve energy/mass and to improve the ease of
processing. In reactive systems, usually to improve the overall conversion i.e. recycle non
reacted feed

Question 2

Bypass

Answer 2

the direction of either part or whole of a process stream around rather than
through a plant unit and the recombination of the streams downstream of the unit. Bypass
is usually used to improve control or to give greater process flexibility