1
answer
1
watching
345
views

Liquid benzene is pumped from storage and vapourised using a heat exchanger (W301) which utilizes low pressure steam as a source of energy, producing a fresh feed of dry organic vapour which is subsequently mixed with excess air which is drawn from outside, compressed and subsequently heated to the same temperature as the benzene gas stream. The gas stream temperature is increased by passing the vapour through a heat exchange system within a methane-fired furnace (D301) with combustion products venting to atmosphere through the chimney. The hot gases move to an isothermal reactor (C301) where 100% of the Benzene is converted per pass. The reactor temperature is held constant using cooling water. The gaseous reactor products are immediately cooled to 110°C by exchanger (W303) and proceed to an absorption column(also at 110°C) where gas and the absorbing liquid are contacted in a counter-flow arrangement. Maleic anhydride is extracted into a descending stream of liquid dibutyl phthalate. All other gases entering, including those formed by complete combustion of benzene within the reactor can be considered to be insoluble and are purged from the absorber. The product-containing solution passes to a column (K302) operating with a steam - fed external reboiler and total condenser. The single - component bottom product is recycled back to the absorber. The top product, which is pure and contains no contaminants, is sent to storage. Use Microsoft Visio and draw this

 

For unlimited access to Homework Help, a Homework+ subscription is required.

Unlock all answers

Get 1 free homework help answer.
Already have an account? Log in

Weekly leaderboard

Start filling in the gaps now
Log in