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混凝土CO矿化固化的工业示范研究。

An industrial demonstration study on CO mineralization curing for concrete.

作者信息

Wang Tao, Yi Zhenwei, Song Jiayi, Zhao Chao, Guo Ruonan, Gao Xiang

机构信息

State Key Laboratory of Clean Energy Utilization, Zhejiang University, China.

Clean Carbon (Beijing) Technology Co., Ltd, Beijing, China.

出版信息

iScience. 2022 Apr 15;25(5):104261. doi: 10.1016/j.isci.2022.104261. eCollection 2022 May 20.

DOI:10.1016/j.isci.2022.104261
PMID:35521533
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9062350/
Abstract

A 10,000 ton-CO/y mineralization curing (CMC) process was demonstrated in Jiaozuo city, China by retrofitting a traditional autoclaved curing plant. An industrial concrete formula with synergistic effects of aggregate gradation, early hydration, and alkali excitation was developed using local solid wastes resources. Approximately 90% of the raw materials, including fly ash, furnace blaster slag, steel slag, and carbide slag, came from coal-based industries. An extraordinary phenomenon of high-temperature accumulation from room temperature to 140°C was first observed in an industrial scale because of the rapid and strong exothermic carbonation reaction. A step pressure-equalizing procedure was developed to achieve a rapid carbonation rate, a high CO conversion ratio of >98%, and efficient carbonation exotherm recycling. The global warming potential life cycle analysis revealed that compared with autoclaved curing, CMC showed significantly decreased the emission of 182 kg CO-Eq/m-product, with direct CO sequestration accounting for ∼65% of the reduction.

摘要

通过改造传统的蒸压养护厂，在中国焦作市展示了一种年产10000吨二氧化碳的矿化养护（CMC）工艺。利用当地固体废弃物资源，开发了一种具有骨料级配、早期水化和碱激发协同效应的工业混凝土配方。约90%的原材料，包括粉煤灰、高炉矿渣、钢渣和电石渣，来自煤炭工业。由于快速且强烈的放热碳酸化反应，首次在工业规模上观察到从室温到140°C的高温积累这一特殊现象。开发了一种逐步均压程序，以实现快速碳酸化速率、>98%的高CO转化率和高效的碳酸化放热回收。全球变暖潜势生命周期分析表明，与蒸压养护相比，CMC显著减少了182千克CO2-Eq/立方米产品的排放，其中直接CO封存约占减排量的65%。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b316/9062350/9100ab98e401/gr15.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b316/9062350/c15fe24685ae/fx1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b316/9062350/eba2355d50bf/gr1.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b316/9062350/508621d92e23/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b316/9062350/8948032f1206/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b316/9062350/165cfce9abdf/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b316/9062350/9d04d2dadddb/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b316/9062350/667c1f984a90/gr7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b316/9062350/938e22802950/gr8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b316/9062350/02e560557b26/gr9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b316/9062350/01558624a0ed/gr10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b316/9062350/723cfd8482bd/gr11.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b316/9062350/cd4a7aea57ac/gr12.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b316/9062350/fd3ae1bec15c/gr13.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b316/9062350/6882cf58b36e/gr14.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b316/9062350/9100ab98e401/gr15.jpg

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本文引用的文献

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Use of CO curing to enhance the properties of cold bonded lightweight aggregates (CBLAs) produced with concrete slurry waste (CSW) and fine incineration bottom ash (IBA).使用CO养护来增强由混凝土浆体废料（CSW）和细焚烧底灰（IBA）生产的冷粘结轻集料（CBLA）的性能。
J Hazard Mater. 2020 Jan 5;381:120951. doi: 10.1016/j.jhazmat.2019.120951. Epub 2019 Jul 31.
2
A review of mineral carbonation technologies to sequester CO2.二氧化碳捕集的矿物碳化技术综述。
Chem Soc Rev. 2014 Dec 7;43(23):8049-80. doi: 10.1039/c4cs00035h. Epub 2014 Jul 1.
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Accelerated carbonation of municipal solid waste incineration fly ashes.
城市固体废弃物焚烧飞灰的加速碳酸化
Waste Manag. 2007;27(9):1200-6. doi: 10.1016/j.wasman.2006.06.011. Epub 2006 Oct 2.