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A method of preparing an adsorbent for CO2 capture at high temperature

An adsorbent, CO2 technology, applied in the direction of adsorption, separation methods, chemical instruments and methods, etc., can solve problems such as reducing reversibility

Inactive Publication Date: 2011-12-07
THE UNIV OF QUEENSLAND
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  • Abstract
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Problems solved by technology

[0011] However, after a small number of carbonization / calcination cycles CO 2 Trapping capacity and reversible reduction of CaO and CaO-based materials

Method used

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  • A method of preparing an adsorbent for CO2 capture at high temperature
  • A method of preparing an adsorbent for CO2 capture at high temperature
  • A method of preparing an adsorbent for CO2 capture at high temperature

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Embodiment Construction

[0062] The invention is described below primarily with reference to the inert porous metal support being MgO. However, as will be understood by those skilled in the art, other materials may be used in place of or in combination with MgO.

[0063] A CMO adsorbent with CaO supported on MgO was synthesized. Without wishing to be bound by theory, it is believed that the MgO component in the adsorbent is the one that does not interact with CaCO under the reaction conditions. 3 reactive, and thus acts as an inert porosity separating the CaO (ie, its crystals or grains). The inventors believe that loading CO 2 CaCO in the adsorbent 3 The sintering of is largely hindered because the CaO grains in the adsorbent are separated by MgO. That is, the process of the present invention produces ultrafine CaO particles that are uniformly separated from the inert support material. Such CMO sorbents can be reliably used for multiple cycles with less reversible loss than state-of-the-art CaO ...

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Abstract

A method of producing a CO2 adsorbent and CO2 adsorbents. The method includes the steps of: (a) producing a mixture of at least one calcium salt and at least one metal support cation in at least one solvent; (b) drying the mixture to produce a solid containing a calcium metal salt; and (c) calcining the dried solid to produce a sorbent of calcium oxide dispersed in a porous metal support.

Description

technical field [0001] The present invention relates to a preparation especially for CO 2 The method of capture on the sorbent. The method and resulting sorbents find particular utility in high temperature processes. Background technique [0002] by CO 2 Global warming caused by emissions into the atmosphere is of public concern. This, combined with the possible introduction of commercial incentives to limit greenhouse gases, especially atmospheric carbon, requires CO 2 Control Technology. In 2005 electricity and heat production accounted for CO 2 41% of total emissions, and according to the World Energy Outlook (World Energy Outlook) projects that demand will double by 2030. A way to reduce CO in the industrial energy generation sector 2 The method of emission is to use carbon-free energy generation, such as hydrogen energy and nuclear energy generation. However, fossil fuels are currently the most important source of world electricity and heat production, providing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/04B01D53/62B01D53/02C01F11/04C01F7/164
CPCB01J20/3236B01D2251/402B01D2257/30C01P2002/72B01J20/3483B01D53/81C01P2006/16B01J20/3204C01P2006/14B01D2253/306C01B13/185B01D53/62B01J20/34C01F11/06C01P2006/12Y02C10/08C01F7/164C01F11/04B01J20/041Y02C10/04B01D2257/504B01J20/28059B01D2251/60C01P2002/85C01P2004/03B01D2251/404B01J20/06B01J20/3078B01J20/3433Y02C20/40Y02P20/151
Inventor 冯波刘文强
Owner THE UNIV OF QUEENSLAND
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