| abstract |
The present invention relates to a kind of four tower triple effect methanol rectification energy-saving process methods and devices, it is the energy-saving process method and device for producing methanol by distillation process from crude carbinol.Whole device includes at least lightness-removing column（T201）, first rectifying column（T202）, Second distillation column（T203）, third distillation column（T204）Deng four towers and its corollary equipment.Present invention employs multitower multiple-effect the defects of being thermally integrated process, can overcoming the prior art, reduces operation energy consumption more than 30%, has significant practicability and economic benefit, has a extensive future. |