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Ceramic-carbonate compact double-phase inorganic membrane taking ceramic material as support body

A technology of ceramic materials and carbonates, applied in the direction of inorganic chemistry, membrane technology, carbon compounds, etc., can solve the problems of consuming large load energy, increasing the cost of production and reducing emissions, etc., to save load energy and save the cooling process , Expand the effect of the application environment and field

Pending Publication Date: 2021-03-26
INNER MONGOLIA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although organic polymer membranes and some inorganic membranes (such as microporous inorganic membranes) have certain CO 2 separation effect, but these membranes are still unable to separate CO at high temperature (>600 °C) 2 , while high temperature rich CO 2 The temperature of the mixed gas (such as flue gas and recombined gas) is generally 500-1000 ℃. In this way, the separation of CO2 in the high-temperature gas by traditional methods requires cooling the mixed gas to below 150 ℃. The cooling process It will consume a lot of load energy, increasing the cost of production and emission reduction

Method used

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  • Ceramic-carbonate compact double-phase inorganic membrane taking ceramic material as support body
  • Ceramic-carbonate compact double-phase inorganic membrane taking ceramic material as support body

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Effect test

Embodiment 1

[0017] Such as figure 1 As shown, a ceramic-carbonate dense dual-phase inorganic membrane with ceramic material as a support body, the inorganic membrane contains two phases, one phase is a ceramic phase as a support body, and the other phase is a carbonate phase; ceramic The material of the phase is samarium oxide doped with cerium oxide (Sm 2 o 3 doped-CeO 2 , SDC), the carbonate phase is a mixed carbonate; the carbonate phase is a mixed carbonate composed of lithium carbonate and sodium carbonate, and the mixing ratio of lithium carbonate and sodium carbonate is 52:48 mol%.

[0018] During preparation, a hollow fiber tubular, sheet or thick tubular ceramic support is prepared by phase inversion spinning, the support has a porous structure with an average pore diameter of 1-2 microns; then, the mixed carbonate is fired to In the molten state, the molten carbonate is impregnated into the pores of the ceramic support by direct infiltration, filling the pores of the support...

Embodiment 2

[0020] A ceramic-carbonate dense dual-phase inorganic film with ceramic material as a support body, the inorganic film contains two phases, one phase is a ceramic phase as a support body, and the other phase is a carbonate phase; the material of the ceramic phase Samarium oxide doped with cerium oxide (Sm 2 o 3 doped-CeO 2 , SDC), the carbonate phase is a mixed carbonate; the carbonate phase is a mixed carbonate composed of lithium carbonate and sodium carbonate, and the mixing ratio of lithium carbonate and sodium carbonate is 52:48 mol%.

[0021] During preparation, a hollow fiber tubular and sheet-shaped ceramic support body is prepared by phase inversion spinning method, the support body is a porous structure with an average pore diameter of 1-2 microns; then, the mixed carbonate is fired to a molten state, The molten carbonate is impregnated into the pores of the ceramic support by direct infiltration to fill the pores of the support to form a dense ceramic-carbonate du...

Embodiment 3

[0023] A ceramic-carbonate dense dual-phase inorganic film with ceramic material as a support body, the inorganic film contains two phases, one phase is a ceramic phase as a support body, and the other phase is a carbonate phase; the material of the ceramic phase Samarium oxide doped with cerium oxide (Sm 2 o 3 doped-CeO 2 , SDC), the carbonate phase is a mixed carbonate; the carbonate phase is a mixed carbonate composed of lithium carbonate and sodium carbonate, and the mixing ratio of lithium carbonate and sodium carbonate is 52:48 mol%.

[0024] During preparation, a thick tubular ceramic support body is prepared by phase inversion spinning method. The support body has a porous structure with an average pore diameter of 1-2 microns; then, the mixed carbonate is fired to a molten state, and the Method The molten carbonate is impregnated into the pores of the ceramic support body to fill the pores of the support body to form a dense ceramic-carbonate dual-phase hollow fiber...

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Abstract

The invention relates to the field of inorganic membrane preparation, in particular to a ceramic-carbonate compact double-phase inorganic membrane taking a ceramic material as a support body, the inorganic membrane comprises two phases, one phase is a ceramic phase taken as the support body, and the other phase is a carbonate phase; the ceramic phase is made of samarium oxide doped cerium oxide, and the carbonate phase is mixed carbonate. Wherein the carbonate phase is a mixed carbonate composed of lithium carbonate and sodium carbonate, and the mixing ratio of lithium carbonate to sodium carbonate is 52: 48 mol%. The compact inorganic membrane disclosed by the invention can be used for directly separating CO2 at a high temperature, so that the cooling process of mixed exhaust gas is omitted, the load energy is saved, and the economic benefit of production is improved in a turning manner.

Description

technical field [0001] The invention relates to the field of inorganic membrane preparation, in particular to a ceramic-carbonate dense dual-phase inorganic membrane with a ceramic material as a support. Background technique [0002] At present, the main sources of carbon emissions are thermal power plants and chemical plants. CO 2 Capture technology can effectively control carbon emissions. CO 2 The separation of capture technology is the first and most important step. Chemical absorption is a mature industrial separation of CO 2 technology, but this technology also has obvious disadvantages. During the entire absorption process, the absorption efficiency of the absorbent is low, the absorption capacity is small, and the high-temperature gas needs to be lowered to a lower temperature (generally <150°C) during the operation, which will lead to a large amount of extra energy consumption and loss, thereby increasing the cost of separation. [0003] compared to conven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/02B01D69/10B01D69/08B01D69/06B01D69/04B01D67/00B01D53/22C04B41/85C01B32/55
CPCB01D71/02B01D69/04B01D69/10B01D69/08B01D69/06B01D67/0039C04B41/501C04B41/85C04B41/009C01B32/55B01D53/228C04B35/50C04B41/4525Y02P20/151Y02C20/40
Inventor 陈天嘉张永锋许艳阳
Owner INNER MONGOLIA UNIV OF TECH
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