Coal-based chemical looping combustion (CLC) power plant presents itself as a promising technology due to its low energy penalty which is associated with inherent CO2 capture process. However, most evaluations and comparisons (energy efficiency, economic, environmental aspects) of the CLC generally were focused on operation stage. Life cycle assessment (LCA) method “cradle gate” model involving...

Fossil fuels are still widely used for power generation. Nevertheless, it is possible to attain a shortand medium-term substantial reduction of greenhouse gas emissions to the atmosphere through a sequestration of the CO2 produced in fuels’ oxidation. The chemical-looping combustion (CLC) technique is based on a chemical intermediate agent, which gets oxidized in an air reactor and is then cond...

Occupational disorders may be caused by chemical, physical, mechanical and biological reason. One of the chemical agents responsible for many of the chemical damages is aromatic, polycyclic hydrocarbons (PAHs) that are found in coke, coal tar, cresosote, asphalt and gases produced by coal. In the current study, we evaluated cutaneous lesions in workers of Isfahan tar refinement factory. This wa...

Enormous progress has been made in coal pyrolysis research during the last decade. Models of coal devolatilization have progressed from simple rate expressions based on total mass release's to empirical relationships based on the elemental composition of the parent coal3 to models that attempt to describe the macromolecular network of the ~ o a l . ~ ~ Measurements of particle temperature durin...

sulfur emission from coal combustion presents many environmental problems. the techniques used to reduce the amount of sulfur in coal before combustion, include physical, chemical and biological processes.biological processes based on degradation of sulfur compounds by microorganisms offer many advantages over the conventional physical and chemical processes. the processes are performed under m...

Chemical looping process (CLP) is a promising technology for in-situ CO2 capture without energy penalty. Direct CLP has more compact structure, favorable economic competitiveness, and larger reduction of exergy loss compared to syngas CLP. In this work, novel biomass direct chemical combustion (CLC) driven tri-generation system the production cooling, heating, power proposed. The proposed conta...

Coal is a major source of energy. The available Indian coal quality is very poor having very high ash content and low calorific value. Indian coal generates a large quantity of ash as a by-product of combustion. The objectives of the present study were to reduce the ash content of coal to produce ultra-clean coal. The coal was treated wi...