Control method for process of removing permanganate reducing compounds from methanol carbonylation process

Control method for process of removing permanganate reducing compounds from methanol carbonylation process

  • CN 1,926,088 A
  • Filed: 02/24/2005
  • Published: 03/07/2007
  • Est. Priority Date: 03/02/2004
  • Status: Active Grant
First Claim
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1. by the method for fractionation by distillation acetaldehyde and methyl-iodide, comprise the steps:

  • Distillation contains the mixture of methyl-iodide and acetaldehyde to make overhead product and resistates in water distilling apparatus;

    Measure the density of described overhead product;

    WithAccording to the described density that records or by its relative concentration that calculates, regulate at least a process variable relevant with described water distilling apparatus, described process variable is selected from the group by heating rate, pressure tower, feed composition, backflow are formed and reflux ratio is formed.

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