Investigation of technical and economic aspects of pre-dried lignite utilisation in a modern lignite power plant towards zero CO 2 emissions

An improved configuration of low-temperature pre-drying using waste heat integrated in an air-cooled lignite fired power plant

“…An improved concept of low-temperature lignite drying using waste heat in the exhaust steam and warmed air from the condensers in an air-cooled lignite fired power plant was Annual gross power generation MWh 6 3.13 10 × Highlights of Manuscript "An improved configuration of low-temperature pre-drying using waste heat integrated in air-cooled lignite fired power plants"…”

“…Kakaras et al [5] investigated the thermodynamic performance of the integration of WTA drying in a future power plant with elevated steam parameters. Agraniotis et al [6] analysed the financial feasibility of WTA drying technology for the next generation lignite-fired power plants. The percentage points by reducing the lignite moisture content from 37.5 to 31.4%.…”

“…A C C E P T E D ACCEPTED MANUSCRIPT 6 and then is dumped into the ambient environment as the exhaust. In water-cooled units, the temperature of the discharged cooling water normally ranges 30 -50°C, and air heated by the cooling water may reach 25 -45°C.…”

A novel lignite-fired power plant integrated with a vacuum dryer: System design and thermodynamic analysis

“…Karakas [25] calculated the thermal efficiencies of lignite-fired power plant integrated with different dryers. Agraniotis [26] investigated co-firing performance of the pre-dried lignite in the existing boiler, and they [27] also proposed that the application of lignite pre-drying technology was an indispensable part in future oxy-coal-fired power plants. Bjork [28] analyzed a local district heat and power plant integrated with a superheated steam dryer with life cycle assessment.…”

Thermodynamic analysis and comparison of retrofitting pre-drying concepts at existing lignite power plants

“…The WTA concept of fuel drying in a fluidized bed using steam as fluidizing medium has been described in previous studies [26,27]. The steam for the fluidization is a part of the evaporated moisture that is extracted after cyclone separation.…”