Demonstration of a Concentrated Potassium Carbonate Process for CO2 Capture

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• 作者：Kathryn Smith ; Gongkui Xiao ; Kathryn Mumford ; Jeffri Gouw ; Indrawan Indrawan ; Navin Thanumurthy ; Dimple Quyn ; Robyn Cuthbertson ; Aravind Rayer ; Nathan Nicholas ; Andrew Lee ; Gabe da Silva ; Sandra Kentish ; Trent Harkin ; Abdul Qader ; Clare Anderson ; Barry Hooper ; Geoff Stevens
• 刊名：Energy & Fuels
• 出版年：2014
• 出版时间：January 16, 2014
• 年：2014
• 卷：28
• 期：1
• 页码：299-306
• 全文大小：440K
• ISSN：1520-5029

文摘

A precipitating potassium carbonate (K₂CO₃)-based solvent absorption process has been developed by the Cooperative Research Centre for Greenhouse Gas Technologies (CO2CRC) for capturing carbon dioxide (CO₂) from industrial sources, such as power plant flue gases. Demonstration of this process is underway using both a laboratory-based pilot plant located at The University of Melbourne and an industrial pilot plant located at the Hazelwood Power Station in Victoria, Australia. The laboratory-scale pilot plant has been designed to capture 4鈥?0 kg/h CO₂ from an air/CO₂ feed gas rate of 30鈥?5 kg/h. The power-station-based pilot plant has been designed to capture up to 1 tonne/day CO₂ from the flue gas of a brown-coal-fired power station. In this paper, results from trials using concentrated potassium carbonate (20鈥?0 wt %) solvent are presented for both pilot plants. Performance data (including pressure drop, holdup, solvent loadings, temperature profile, and CO₂ removal efficiency) have been collected from each plant and presented for a range of operating conditions. Plant data for the laboratory-scale pilot plant (including temperature profiles, solvent loadings, and exit gas CO₂ concentrations) have been used to validate and further develop Aspen Plus simulations, in anticipation of further work involving precipitation and the industry-based pilot plant.