The ratio of P3D3 is 3 the ratio of P3D3 is 1 and the ratio

The ratio of P3/D3 is 3, the ratio of P_3/D_3 is 1, and the ratio of A to B in stream P2 is 4 to 1. Calculate the composition and percent of each component in stream E. To save energy, stack gas from a furnace is used to dry rice. The flow sheet and known data are shown in Figure P12.ll. What is the amount of recycle gas (in lb mol) per 100 lb of P if the concentration of water in the gas stream entering the dryer

Solution

Ans of 12.11

Start with the over all system

moll fr mass fr

H2O 0.0473 rice 0.95

gas 0.9527 H2O 0.051.0000

P (lb)

Rice Product

  W (lb mol)

F (lb)

mol fr

0.75 XW_H2O 0.0931

H2O 0.25 XW_gas 0.9069

1.0 1.0000

Step 1, 2, 3 and 4: In the diagram use mol and mass percent forcompositions and mol and mass for flow as specified.

Step 5: Basis: P = 100 lb

Thank You