Sulphur-assisted carbon capture and utilization (CCU) methods and systems
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United States of America Patent
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Oct 31, 2017
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app pub date -
Jun 6, 2016
filing date -
Mar 4, 2016
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Abstract
Disclosed herein is a system and method for sulphur-assisted carbon capture and utilization. The system includes a sulphur depolarized electrolyser (SDE) for receiving electricity, H2O and SO2 and for electrolysing the H2O and SO2 to produce hydrogen and sulphuric acid (H2SO4), a decomposition reactor for receiving and decomposing the H2SO4 into SO3 and H2O, wherein the H2O is recycled to the SDE, a sulphur submerged combustor for converting the SO3 to SO2 and producing Sn vapor, a sulphur power plant for combusting Sn vapor to produce SO2, electricity and heat and for supplying the SO2 and the electricity to the SDE and for supplying the heat to the decomposition reactor. The hydrogen is delivered to a carbon capture and utilization facility. An optional Flue Gas Desulphurisation (FGD) regenerable system removes SO2 from flue gas, a CO2 converter generates COS, and a separator separates the COS from the flue gas.
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