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High-performance porous calcium-based absorbent and preparation method thereof

A calcium-based absorbent and absorbent technology, applied in the field of high-performance porous calcium-based absorbent and its preparation, to achieve the effects of good bonding performance, high quality, and non-toxic control

Active Publication Date: 2017-10-20
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0008] In view of the above technical problems, it has not been seen that biomass is used to prepare modified calcium-based absorbents for cyclic capture of CO 2 How to solve the above-mentioned technical difficulties, design a high-performance porous calcium-based absorbent and its preparation method, and realize the preparation of high-performance and low-cost adsorbents in batches is the problem to be solved in the present invention

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  • High-performance porous calcium-based absorbent and preparation method thereof
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[0036] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0037] A high-performance porous calcium-based absorbent, which is a uniform spherical shape with a controllable diameter of 0.3mm-6mm. Its components include calcium source powder and biomass powder, and the mass ratio of the biomass powder to calcium source powder It is (1-20):100, and the biomass powder of the calcium-based absorbent is cracked and volatilized during high-temperature calcinat...

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Abstract

The invention belongs to the technical fields of environmental pollution control and clean coal combustion, and concretely relates to a high-performance porous calcium-based absorbent. The high-performance porous calcium-based absorbent comprises calcium source powder and biomass powder, and the biomass powder is pyrolyzed and volatilies when the calcium-based absorbent is calcined at a high temperature in order to form a porous structure in the biomass powder. The invention also discloses a preparation method of the calcium-based absorbent. Pores formed by the pyrolysis and volatilization of the cellulose-rich biomass powder are used to improve the adsorption capacity and the cycle stability of the calcium-based absorbent, so the prepared spherical calcium-based absorbent is suitable for capturing CO2 in a fluidized bed system; the characteristic of low cost of biomass is fully used in the whole preparation process, and the preparation method also has the advantages of high efficiency, high quality, low cost and convenience in control, so the method is especially suitable for being used in large-scale batch production.

Description

technical field [0001] The invention belongs to the technical field of environmental pollution prevention and clean coal combustion, and more specifically relates to a high-performance porous calcium-based absorbent and a preparation method thereof. Background technique [0002] Under the situation that global warming has become an established fact, CO 2 The reduction of greenhouse gas emissions has become the consensus of the international community to deal with climate change, and my country is also facing a huge CO2 2 pressure to reduce emissions. CO 2 capture and storage (CO 2 Capture and Storage (CCS) technology is considered to be one of the most promising emission reduction technologies. This technology is based on the capture of CO from large fixed carbon emission sources such as coal-fired power stations and cement plants. 2 , and then for this high concentration of CO 2 compressed transport and storage, so that CO 2 A technology in which emissions are contr...

Claims

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Application Information

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IPC IPC(8): B01J20/04B01J20/22B01J20/28B01J20/30B01D53/02B01D53/62B01D53/81
CPCB01D53/02B01D53/62B01D53/81B01D2257/504B01J20/04B01J20/041B01J20/223B01J20/28004B01J20/28019Y02A50/20Y02C20/40
Inventor 徐勇庆罗聪丁浩然李小珊张泽武桑会英赵伟贤张立麒
Owner HUAZHONG UNIV OF SCI & TECH
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