Study on the Application of Ammonia Co-firing in Existing 600 MW Subcritical Coal-Fired Power Plants in Indonesia: Investigation of Combustion Equipment.

Abstract

PLN, Indonesia's only electricity provider company, still relies on coal-fired power plants (CFPP) for most of its electricity needs. The energy transition agenda forces PLN to review existing options so that coal-fired power plants can continue to operate until the end of their useful life. One of the hottest and newest programs in Indonesia is co-firing ammonia. Ammonia, a non-carbon fuel, replaces some coal burned in the boiler. Its application to existing boilers will shift operating patterns, especially on the combustion side. The investigation results said that co-firing ammonia would affect boiler performance, combustion profile, and several operating equipment. Boiler efficiency becomes lower in the presence of ammonia. Based on the combustion simulation results, the combustion temperature can be higher due to the additional heat of the injected fuel to maintain the power plant output. Some equipment, such as fan draft capability, should be re-examined because this application can increase its performance level.