Treatments of low rank coals for improved power generation and reduction in Greenhouse gas emissions

A comparison of acid treatment in the dewatering of Chinese and Australian lignites by mechanical thermal expression at high temperatures

“…They reported an increased level of inorganic cation (Na, K, Mg and Ca) in the product water and their concentrations are dependent on the concentration of HCl solutions used. The reduction in the ash content was found to be more apparent in higher temperature treatments using acid washed coal [9,[11][12][13].…”

A roadmap to a green chemical industry in Australia

“…Electricity generated using cheap and plentiful deposits of low cost, low quality coal, incurs the highest amounts of carbon dioxide per MWh, while the use of a high efficiency plant reduces these emissions by around 30% (Domazetis et al 2008;Domazetis 2001). Introduction of a new plant, however, requires closing an inefficient plant to avoid an oversupply of electricity.…”

Low rank coal drying technology for decreasing electricity cost production: case study of Nagan Raya power plant

“…[10] Regarding the environmental aspect, the domestic coal close to Nagan Raya power plant has low sulphur content. Domazetis et al (2008) reported a 30% relative reduction in CO2/MWh when the moisture content of the coal was reduced from 60% to 40%. [11] It can produce two benefits at once, increasing the heating value of coal and reducing greenhouse gas emissions.…”

“…It varies from as low as nil for the hydrogenation process to 15% for briquetting and gasification processes. [12] A 30% decrease in greenhouse gas emission is estimated by the implementation of efficient drying technologies in Victorian brown coal power stations. [13] A safe and efficient drying process from cost and energy perspectives can result in improvement of overall efficiency and cost reduction of the whole polygeneration process.…”