A CISDI Thermal and Environmental Engineering Co built 150MW ultra-high-temperature, ultra-high-pressure gas power generator is now on grid at Lianyuan Steel in China’s Hunan Province.

The power generating facilities comprise of one 502-tonne per hour UHT, a UHP gas boiler, one 165MW condensing steam turbine featuring an intermediate primary reheat process, a 180MW power generator and auxiliaries.

State-of-the-art, ultra supercritical gas power generating tech is achieving a main steam pressure of 25.4 megapascals, a temperature of 605 deg.C and plant-wide thermal efficiency of 45.3 per cent. These performance indicators are the world’s highest for a power generator of this kind.

Construction and on-grid generation took only 12 months, setting a steel sector record in China.

Annual electricity generation is expected to be 13 x10⁸ kilowatts, the direct economic benefit of which will amount to USD120 million.

The power generator is also creating strong environmental benefits. The power generator will enhance the utilisation efficiency of Lianyuan Steel’s byproduct of gas resources and gas bleeding will be reduced.

CISDI Thermal has long been committed to the research and development of low-thermal-value gas power generation to achieve higher parameters and downsize facilities.

Its achievement list covers all parameter levels for the sector - from medium temperature and medium pressure to high temperature/high pressure, high temperature/ultrahigh pressure, subcritical/ultra supercritical.

The CISDI team, pictured at the control centre screens for the on-grid ultra supercritical power generator at Lianyuan Steel