INTRODUCTION The Externally Fired Combined Cycle (EFCC) is an advanced coal-fired power generation concept with a potential for higher thermal efficiency and lower cost than conventional coal-based systems. 1 The concept incorporates efficient gas turbine combined cycle technology for use with coal. Unlike "direct fired" combined cycles, the EFCC does not require any special fuel preparation. T...

Environmental concerns over increased coal consumption are fully justified by the past history of coal use. Although improved technology has provided some safeguards, increased utilization will require mining practices, emission control technologies, and waste disposal procedures that are not yet fully integrated into the routine use of the coal energy system. The Committee on Health and Evniro...

Coal gasification with carbon dioxide is a process for generating clean gaseous fuels and relieving greenhouse effect. Zhundong coal has high alkali and alkali earth metals (AAEMs) content, medium volatile and low ash in nature. Isothermal CO2 gasification of char derived from Zhundong coal (R-char) and char from acid washing R-char (AR-char) are performed in thermo-gravimetric analyzer (TGA). ...

We develop a microeconomic model of endogenous growth where clean and dirty technologies compete in production and innovation– in the sense that research can be directed to either clean or dirty technologies. If dirty technologies are more advanced to start with, the potential transition to clean technology can be diffi cult both because clean research must climb several rungs to catch up with ...

This paper proposes a polygeneration system based on a multi-input chemical looping combustion system, which generates methanol and electricity, through the use of natural gas and coal. In this system, the chemical looping hydrogen (CLH) production system and the coal-based methanol production system are integrated. A high quality fuel, natural gas, is used to improve the conversion ratio of co...

Abstract Coal has been the main energy source in China for a long period. Therefore, industry must improve coal power generation efficiency and achieve near-zero CO 2 emissions. Integrated gasification fuel cell (IGFC) systems that combine high-temperature cells, such as solid oxide cells or molten carbonate (MCFCs), are proving to be promising efficient clean generation, compared with traditio...

A solar-aided coal-fired power plant realizes the integration of a fossil fuel (coal or gas) and clean energy (solar). In this paper, a conventional 600 MW coal-fired power plant and a 600 MW solar-aided coal-fired power plant have been taken as the study case to understand the merits of solar-aided power generation (SAPG) technology. The plants in the case study have been analyzed by using the...

Traditional technologies of solid fuels incineration account for higher level of pollutant in comparison with incineration of liquid and gas fuels. However the fraction of heat and electric power generated at coal fired thermal power plants will increase and by 2020 will have exceeded 50%. Plasma activation promotes more effective and environmental friendly power coals incineration [1]. Effecti...