Cansolv Technology to Remove SO2 from Major Chinese Coal-fired Power Plant

Shell announced recently that its Cansolv Technologies Inc. subsidiary has signed an agreement with Beijing Guodian Longyuan Environmental Engineering Co., Ltd. (GDLY) to license a CANSOLV SO2 Scrubbing System for a new 1.2 GW coal-fired power plant to be built by China Guodian Corporation at Duyun in Guizhou province, China.

The CANSOLV SO2 Scrubbing System, a proprietary technology of Cansolv, will be used to remove sulfur dioxide from the power plant’s flue gas. Cansolv will also supply GDLY with engineering services and its unique SO2 absorbent.

The CANSOLV system is a regenerable technology that captures more than 99.9% of SO2 emissions. It is highly flexible and used in a broad range of industrial applications. The high purity of the captured SO2 makes it ideal for conversion into sulfuric acid, and in Duyun, this will provide further value through its use in a local fertilizer plant.

By selecting the regenerable CANSOLV system, GDLY can avoid more than 1,000,000 t/y of landfill produced from conventional non-regenerable systems, which utilize a once-through absorbent that cannot be reused and therefore generates effluent streams. A regenerable desulfurization technology can reuse an absorbent by recycling it through the system over and over again, resulting in less waste and cost savings without the need to restock.

GDLY is a leader in the implementation of flue gas desulfurization (FGD) technologies in the Chinese power sector and is a subsidiary of China Guodian Corporation, one of the top producers of electrical power in China.

Source: Royal Dutch Shell plc

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