Hollow fiber membrane reactor for gaseous oxidation reaction, preparation and application thereof

Abstract

The invention discloses a hollow fiber membrane reactor for gaseous oxidation reaction, a preparation method and application thereof. The membrane reactor is made of a compact hollow fiber oxygen permeation membrane, wherein the wall thickness of a pipe is between 0.1 and 0.3mm, and the outer pipe diameter is between 1 and 3mm; the oxygen permeation membrane is made of a dual-phase composite ceramic oxygen permeation membrane material which is prepared by mixing an electron conductive phase material and an ion conductive phase material in a volume ratio of 0.43-1.5:1; the electron conductive phase material is provskite-type chromic lanthanum composite oxide (Ln1-xAx)1-zCr1-yByO3 and / or strontium titanate-based composite oxide (LnxSr1-x)1-zTi1-yByO3; and the ion conductive phase material is stabilized fluorite type zirconium dioxide Zr1-x1Rx1O2-delta, or doped cerium dioxide R'z1Ce1-z1O2-delta. The method for preparing the membrane reactor comprises the following steps: mixing the electron conductive phase material and the ion conductive phase material in the volume ratio of 0.43-1.5:1 to prepare a hollow fiber membrane blank by adopting a wet phase inversion method; and sintering the blank at the temperature of between 1,300 and 1,600 DEG C for 10 to 18 hours. The membrane reactor has high oxygen permeation performance, excellent high temperature reduction resistance and long-term stability and low production cost.

Description

technical field

[0001] The invention belongs to the field of membrane technology, and more specifically relates to a high-stability dual-phase ceramic hollow fiber membrane reactor for gas-phase oxidation and its preparation method and application. Background technique

[0002] Ceramic oxygen-permeable membrane reactor is a chemical operation unit that couples oxygen separation and purification with oxygen-consuming chemical reaction, and has a wide range of applications in the fields of chemical industry, energy and environmental protection. For example, a ceramic oxygen permeable membrane is used to fill a methane deep oxidation catalyst to form a membrane reactor for methane combustion. As another example, a ceramic oxygen-permeable membrane is used to fill the partial oxidation of methane catalyst to form a membrane reactor for partial oxidation of methane to synthesis gas (H 2 +CO). One side of the oxygen permeable membrane is a high oxygen partial pressure oxygen-con...

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