Dehydration method and dehydration apparatus providing increased water permeation
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United States of America
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Nov 12, 2024
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Apr 23, 2020
app pub date -
Dec 5, 2019
filing date -
Dec 5, 2019
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Abstract
A dehydration method is a dehydration method for selectively separating water from a mixture that contains water, and the method includes a step of supplying the mixture to a supply side space of a separation membrane, and a step of making a pressure difference between the supply side space and a permeation side space of the separation membrane. The separation membrane includes a first zeolite membrane that faces the permeation side space and is constituted by a first zeolite and a second zeolite membrane that faces the supply side space and is adjacent to the first zeolite membrane. The second zeolite membrane is constituted by a second zeolite that has the same framework structure as framework of the first zeolite and has a lower Si/Al atom ratio than a Si/Al atom ratio of the first zeolite.
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