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A preliminary process flow diagram for a DME process is shown in Figure B . 1 . 1 , in which 5 0 , 0
A preliminary process flow diagram for a DME process is shown in Figure B
in which metric tons per year of purity DME product is pro
duced. Due to the simplicity of the process, an operating factor greater than
is used.
Fresh methanol, Stream is combined with recycled reactant, Stream
and vaporized prior to being sent to a fixedbed reactor operating between
and The singlepass conversion of methanol in the reactor is The re
actor effluent, Stream is then cooled prior to being sent to the first of two distil
lation columns: T and T DME product is taken overhead from the first
column. The second column separates the water from the unused methanol. The
methanol is recycled back to the front end of the process, and the water is sent to
waste water treatment to remove trace amounts of organic compounds.
Stream summaries, utility summaries, and equipment summaries are pre
sented in Tables BB
Table B Flow Table for DME Unit
Calculate the conderser heat duty and the reboiler heat duty of the DME distillation column showing all workings please
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