Study on Preparation and Carbon Sequestration Performance of Carbide Slag-CFB Fly Ash Composite Particles

JIA Hongde; WANG Nana; FENG Yuchuan; LIU Yunqi; XU Nuo; MA Suxia

doi:10.19805/j.cnki.jcspe.2026.250522

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Study on Preparation and Carbon Sequestration Performance of Carbide Slag-CFB Fly Ash Composite Particles

更新时间：2026-07-16

- Study on Preparation and Carbon Sequestration Performance of Carbide Slag-CFB Fly Ash Composite Particles
- Chinese Journal of Power Engineering Vol. 46, Issue 7, Pages: 215-224(2026)
- 作者机构：
- 作者简介：
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- DOI：10.19805/j.cnki.jcspe.2026.250522
  CLC： X705
- Published：2026
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贾宏德, 王娜娜, 冯于川, 刘云奇, 许诺, 马素霞. 基于电石渣-CFB粉煤灰复合颗粒制备及其固碳性能研究[J]. 动力工程学报, 2026, 46(7): 215-224.
贾宏德, 王娜娜, 冯于川, 刘云奇, 许诺, 马素霞. 基于电石渣-CFB粉煤灰复合颗粒制备及其固碳性能研究[J]. 动力工程学报, 2026, 46(7): 215-224. DOI： 10.19805/j.cnki.jcspe.2026.250522.

DOI： 10.19805/j.cnki.jcspe.2026.250522

摘要

以工业固废电石渣为钙源

通过加入循环流化床(CFB)粉煤灰与水泥进行改性

耦合养护工艺制备新型复合颗粒。结果表明:电石渣中高含量的CaO为体系提供了强碱环境

最优配比组在水化过程中生成了大量C-S-H凝胶和钙矾石等水化产物;28 d养护后样品强度达到4.619 MPa

较1 d强度提升约109%;复合颗粒CO2初始吸附容量达0.34 g/g

在850 ℃下

经过16次循环后CO2吸附量较初始仅下降了31.5%;吸附等温线符合双指数模型

动力学数据符合准二级模型

说明吸附过程受化学键控制。

Abstract

Using industrial solid waste carbide slag as calcium source

novel composite particles were prepared by adding circulating fluidized bed (CFB) fly ash and cement for modification and coupling with curing process. Results show that the high content of CaO in carbide slag provides a strong alkali environment for the system

and a large number of hydration products such as C-S-H gel and ettringite are generated in the hydration process of the optimal ratio group. The strength of the sample after 28 days of curing reaches 4.619 MPa

which is about 109% higher than that of 1 day curing. The initial CO2 adsorption capacity of the composite particles reaches 0.34 g/g

and at 850 ℃

the CO2 adsorption capacity only decreases by 31.5% after 16 cycles. The adsorption isotherm conforms to double exponential model

and the kinetic data conforms to quasi-second-order model

indicating that the adsorption process is controlled by chemical bonding.

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