Crude methanol refinery technology
Proprietary Technology and Plants
Technology Introdction:
Crude methanol rectification process includes single-column process, two-column process, three -column process and energy-saving three-column process. The feature of Four processes are as follows:
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No.
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Crude methanol rectification process
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Feature
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1
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single-column process
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1.Methonal-water regroup, separate in one column
2.Advatange: investment saving, reduce heat energy consumption
3.Disadvantage: the purity of refined methonal is not very pure.
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2
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two-column process
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1.The combination of pre-recification column and main rectification column
2.Refine crude methonol including dimethyl ether and other light components and reducing impurities
3.Advantage: simple process ,user friendly, less investment
4.Disadvange: high energy consumption, low purity
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3
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three -column process
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1.Three rectification column work under the same pressure. The third rectification column produces
2.Advantage: high purity
3.Disadvantage: high investment. Need more area
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