This technology is a separation and fixation apparatus that connects a first reactor and a second reactor containing sodium hydroxide solution in series to first absorb sulfur dioxide from the supply gas, followed by carbon dioxide. Seawater is added to the first reactor to produce gypsum, and the supernatant is sent to the second reactor to generate magnesium carbonate.
Post-combustion carbon capture technology has faced technical challenges in scaling up facilities. Fossil fuels contain sulfur, which results in sulfur dioxide emissions in flue gas. Sulfur dioxide is a precursor to acid rain and fine particulate matter, causing harm to human health and equipment while interfering with the capture process.
This technology controls absorption sequence, solution concentration, flow rate, and reaction time to fix both gases as gypsum and magnesium carbonate, respectively, utilizing calcium and magnesium ions in seawater instead of separate reagents. Applicable to power plants, ship exhaust treatment, and the production of construction-grade gypsum and carbonate raw materials, it achieves both air pollutant reduction and high-value material recovery in a single process.
This invention was developed with support from the Ministry of Education's Greenhouse Gas Reduction Innovative Talent Training Program.
N/A
