A kind of conversion method of oxygenates
A compound and conversion technology, applied in the field of oxygen-containing compound conversion, can solve the problems of complex operation, cumbersome implementation process, inability to prolong the catalyst operation period, etc., and achieve the effects of improving production efficiency, prolonging online operation time, and prolonging operation period.
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Embodiment 1
[0047] This example illustrates the process and results of the first activation of the first reaction cycle by the method of the present invention.
[0048] The deactivated MTP catalyst in Comparative Example 1 above was not regenerated by normal charcoal burning, but was activated on-line by using aromatics-containing material feed.
[0049] Following the comparison ratio evaluation, the temperature of the MTP catalyst bed was controlled to be 465±5°C. Switch to toluene (analytically pure, Tianjin Kemiou Chemical Reagent Co., Ltd.) as the revitalizing agent, and the space velocity is 1h -1 , Atmospheric pressure reaction contact 24h. Then switch back to the normal feed of 50% (heavy) methanol aqueous solution, and adjust the temperature of the MTP reactor to 480±5°C and the space velocity of methanol to 1.0h -1 . The evaluation results show that the methanol conversion rate rises to over 99% within 24 hours of switching the feed, after which the methanol feed space velocit...
Embodiment 2
[0053] This example illustrates the process and results of the second activation of the first reaction cycle by the method of the present invention.
[0054] Following Example 1, the deactivated MTP catalyst was subjected to online activation treatment for the second time by using aromatic hydrocarbon-containing material feed.
[0055] Following the evaluation of Example 1, the temperature of the MTP catalyst bed was controlled to be 465±5°C. Adopt 1,2,4-trimethylbenzene (98%, Acros) as revitalizing agent, space velocity 1.5h -1 , Normal pressure reaction 16h. Then return to the normal feeding of 50% (heavy) methanol aqueous solution, and adjust the temperature of the MTP reactor to be 480±5° C. at the same time. According to methanol space velocity 1.0h -1 . The evaluation results show that the methanol conversion rate rises to over 99% within 24 hours of switching the feed, after which the methanol feed space velocity can be increased, and the methanol feed space velocit...
Embodiment 3
[0058] This example illustrates the process and results of the third activation of the first reaction cycle by the method of the present invention.
[0059] Continuing with Example 2, the carbon-deposited deactivated MTP catalyst was subjected to the third on-line activation treatment using an aromatic hydrocarbon-containing reactivating agent feed.
[0060] Following the evaluation of Example 2, the temperature of the MTP catalyst bed was controlled to be 470±5°C. Gasoline obtained by methanol-to-gasoline (MTG) process (laboratory MTG evaluation retention, containing 33.9% by weight of aromatics, 12.69% by weight of olefins, others are alkanes and cycloalkanes) is used as a rejuvenating agent, and the space velocity is 0.5h -1 , Normal pressure reaction 16h. Then return to the normal feeding of 50% (heavy) methanol aqueous solution, and adjust the temperature of the MTP reactor to be 480±5° C. at the same time. According to methanol space velocity 1.0h -1 Evaluate the conv...
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Abstract
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