IHI Corporation

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Coal Power Generation / Coal Gasification

Air Quality Control Systems (DeNOx / DeSOx system)

In flue gas desulfurization plant, sulfur oxide (SOx) from exhaust gases emitted from factories or thermal power plants is absorbed so that by-products such as calcium sulfate can be recovered. Supported by rich experience with large size flue gas desulfurization plant and power generators such as boilers, IHI has been delivering high performance equipment that can meet the recent, strict emission regulations. Flue gas denitrification plant uses ammonium (NH3) and a catalyst to decompose nitrogen oxide (NOx) in exhaust gases.

Twin IHI Gasifier (TIGAR®)

The importance of coal gasification technology is increasing around the world due to the rising cost of oil and natural gas. Lignite coal is suitable for gasification because of its high reactivity, and since there are huge reserves of this coal available, simple and cheap gasifier is needed. IHI has developed the TIGAR® (Twin IHI Gasifier) process for lignite coal, based on our commercialized circulating fluidized bed technology. TIGAR® is a circulating fluidized bed gasifier with twin reactors (a riser combustor and a bubbling bed gasifier), and can produce high calorific syngas at low temperatures (800 – 900°C) and atmospheric pressures.

Other feedstock materials are considered Wood, Bagasse, Bark, Palm Waste and so on to produce useful products such as CO, CO2, H2, CH4 and Methanol .

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Boilers for coal-fired power plants (Supplier, EPC and Maintenance)

As one of major boiler manufacturers in Japan, IHI has supplied a great number of boilers for power generation in Japan and overseas, including Australia, South East Asia, North America, Europe, Middle East and China. In our experiences, we provided ultra large scale boilers over 1,000MW for a Japanese utility company as well as boilers for industrial use and independent power producers (IPPs). IHI has developed the technologies to utilize a variety of fuel like the ones produced from waste materials and biomass in addition to ordinary fuels such as coal, heavy fuel oil and natural gas. IHI is also focusing on lignite coal categorized as low rank coal, and we strive to reduce CO2 emissions of power plants through advanced technologies, as well.

In addition to supply of boilers, IHI also performs detailed maintenance study on IHI and other suppliers’ boilers and offers actual practical techniques to improve the performance of the boilers.

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Other Products