CO2 capture from reheating furnace based on the sensible heat of continuous casting slabs. (13th February 2018)

• Record Type: Journal Article
• Authors: Zhang, Fengyuan; Zhou, Yaodong; Sun, Wenqiang; Hou, Shengya; Yu, Lijun
• Is Part Of: International journal of energy research. Volume 42:Number 6(2018)
• Page Start: 2273
• Page End: 2283
• Publication Date: 2018-02-13
• Subjects: Aspen Plus simulation -- carbon capture -- continuous casting slabs -- regeneration energy consumption -- reheating furnace flue gas; Power resources -- Periodicals; Power (Mechanics) -- Periodicals; Power resources -- Research -- Periodicals; 621.042
• DOI: 10.1002/er.4020
• Languages: English
• ISSNs: 0363-907X

Abstract

Summary: Carbon capture and storage adopted by power plants has been extensively studied in recent years. However, little attention has been paid to carbon capture and storage for steel plants. After considering the differences between steel and power plants, a carbon capture system of reheating furnace flue gas is designed, based on the sensible heat of continuous casting slabs. As a result, a significant amount of waste heat resource from rolling mills can be effectively reused. By using Aspen Plus to optimize parameters of the capture system, such as regeneration pressure and reflux ratio, the regeneration energy consumption is obtained and the result is verified by comparing the data with that of other research. Under the constraint condition of 90% CO2 capture rate, simulation results show that the purity of CO2 obtained is 98.4%, and the annual CO2 capture capacity is about 70 000 tons. Finally, main parameters of continuous casting slabs and the heat recovery boiler are calculated. The heat load of the steam supplied for the reboiler is 8.5 MW, indicating that this steam generation method matches the carbon capture system. Abstract : A carbon capture system of reheating furnace flue gas, based on the sensible heat of continuous casting slabs, is designed in this paper. By using Aspen Plus to optimize parameters of the capture system, the regeneration energy consumption is obtained and the result is verified by comparing the data with that of other research. Main parameters of continuous casting slabs and the heat recovery boiler are also calculated.