Method and system for continuously preparing polyoxymethylene dimethyl ether by utilizing ionic liquid catalyst
A polymethoxydimethyl ether, ionic liquid technology, applied in chemical instruments and methods, preparation of organic compounds, chemical recovery, etc., can solve the problems of low catalyst activity, complex process, difficult industrialization, etc., and achieve conversion rate. High, process simplification, and the effect of solving the problem of recycling
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[0042] Example one
[0043] After the reaction of the product and each component reaches equilibrium, samples are taken and quantitatively analyzed by a gas chromatograph. The results are shown in Table 1 below:
[0044] Reaction temperature: 120°C;
[0045] Reaction pressure: 2.0 MPaG;
[0046] Feed ratio of concentrated formaldehyde to methanol: 2.5:1;
[0047] Catalyst consumption: 4%;
[0048]
Example Embodiment
[0049] Example two
[0050] After the reaction of the product and each component reaches equilibrium, samples are taken and quantitatively analyzed by a gas chromatograph. The results are shown in Table 2 below:
[0051] Reaction temperature: 130°C;
[0052] Reaction pressure: 3.0 MPaG;
[0053] Feed ratio of concentrated formaldehyde to methanol: 3:1;
[0054] Catalyst consumption: 10%;
[0055]
Example Embodiment
[0056] Example three
[0057] After the reaction of the product and each component reaches equilibrium, samples are taken and quantitatively analyzed by a gas chromatograph. The results are shown in Table 3 below:
[0058] Reaction temperature: 110°C;
[0059] Reaction pressure: 1.0 MPaG;
[0060] Feed ratio of concentrated formaldehyde to methanol: 1:1;
[0061] Catalyst consumption: 1%;
[0062]
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