System efficiency improvement of IGCC with syngas clean-up

• Published in: Energy (Oxford) Vol. 152; pp. 75 - 83
• Main Authors: Chen, Yi-Shun, Hsiau, Shu-San, Shu, Duan-You
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.06.2018; Elsevier BV
• Subjects: Air pollution; Boilers; Clean utilization; Coal; Coal-fired power plants; Collection technology; Combined cycle engines; Dust particulates; Electric power generation; Environmental cleanup; Filter media; Filters; Flue gas; Fly ash; Fossil fuels; Gasification; IGCC; Integrated gasification combined cycle; Moving granular bed filters; Particulate emissions; Particulate matter; Particulates; Performance enhancement; Pollutants; Pollution control; Power plants; Regeneration; Synthesis gas; Clean utilization; Collection technology; IGCC; Moving granular bed filters; Dust particulates
• ISSN: 0360-5442; 1873-6785
• DOI: 10.1016/j.energy.2018.03.109

The integrated gasification combined cycle (IGCC) is considered a potentially important development in advanced coal-based power plants. In this system, gasification processes provide an opportunity to control and reduce pollutant emissions. Indeed, the clean utilization of flue gas is a key design requirement for new power plants. This study aimed to improve the performance of moving granular bed filters for gas clean-up in the IGCC. Such filter systems pass dry fly ash through a column containing a filter medium such as sand in order to collect micrometer-scale particulate matter. The experimental device tested has several unique design features. The device can be operated with a cold input gas and incorporates a regeneration process for the filter media and a cross-wise flow to simulate filter operation in an industrial coal boiler environment. A series of experiments was performed at room temperature to demonstrate the collection efficiency of this device under several sets of operating conditions. The main focus of the current study was the development of a dust particulate removal technology that could be applied in the IGCC. •This technology should aid the development of a more efficient clean-up process for application to the IGCC.•The test results provide important design information for PM2.5 filtration with a moving granular bed filter.•The better collection efficiency of smaller-sized particulates was obtained with the higher dust concentration.