$6.$ Convert the following word statement problem into PFD

Methyl tertiary butyl ether $($MTBE$)$ is used as an antiknock additive in gasoline.

a$.$ Give $2$ storage tanks for isobutene and methanol.

b$.$ Connect centrifugal pump to each of the tank.

c$.$ Connect globe valve to each pump delivery line.

d$.$ Connect the delivery lines to a reactor.

e$.$ Connect the reactor outlet to a distillation column. Use a diaphragm valve before the inlet to the reactor.

f$.$ MTBE leaves the bottom of the distillation column through a ball valve and sent to storage tank.

g$.$ Unreacted methanol and isobutene leave the top of the distillation column as vapor and it is passed to an absorption column. Use a relief valve at the top of the distillation column.

h$.$ Water is used in absorption column.

i$.$ Isobutene leaves the top of the absorption column with water and is used as a fuel gas. Use a relief valve at the top of the absorption column.

j$.$ Methanol with water leaves from the bottom of the absorption column and is sent to distillation column $2.$ Use a butter fly valve at the delivery to the column $2.$

k$.$ Methanol is separated from water by distillation column $2$ and recycled to the reactor. Use a throttling valve. The water which leaves the base of the distillation column $2$ is recycled to the absorption column. Use a throttle valve for recycle and pressure relief valve at the top.

l$.$ A purge is taken from the water recycle stream to prevent the build$-$up of impurities. A gate valve is used to purge. A globe valve is used in the recycled water stream.

m$.$ Label all the equipment with equipment number, equipment class, and number series. Wherever possible use standby items.