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Process Description: Fresh Methanol

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Process Description
Fresh methanol, Stream 1, is combined with recycled reactant, Stream 14, and vaporized prior to being sent to a fixed bed reactor operating between 250C and 368C. The single pass conversion of methanol in the reactor is 80%. The reactor effluent, Stream 7, is then cooled prior to being sent to the first of two distillation columns, T-201 and T-202. 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, while the water is sent to waste water treatment to remove trace amounts of organic compounds.
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