release  volatile  organic  compounds  (vocs)  as  environmental  and  occupational  pollutant  cause  macro perspective affect such as climate change, humans and economic consequences. although fixed bed absorber is widely used as a controlling method because of its economically and availability, but these absorbers are facing some issue like high pressure drop, non-uniform distribution of flu...

The aim of this work was to investigate whether the use individual tree components (i.e., stem wood, bark, branches, and needles spruces) as feedstocks during oxygen blow gasification is more efficient than using mixtures these components. Experiments were performed at three levels in an 18-kW blown fixed bed gasifier with both single mixed component feedstocks. composition resulting syngas col...

This study aimed to determine the effect of rice husk fluidization and variation in equivalence ratio bubbling fluidized bed gasifiers without sand materials. It also improve quality by reducing diameter husks. Therefore, bulk density increases, whereas voidage decreases, both which are main parameters for improving solid particles. Experiments were carried out at a velocity 0.82 m/s, varying e...

The co-disposal of densified sludge and wastepaper in a co-current flow packed bed gasifier represents new application of the thermal gasification process. Advantages of this technolo a gy include lower costs than other incineration or pyrolysis technologies, simple construction and operation, and the ability to a variety of fuels including agricultural wastes and other b.iomass materials in ad...

in a novel dual bed reactor fischer-tropsch synthesis was studied by using two diffrent cobalt catalysts. an alkali-promoted cobalt catalyst was used in the first bed of a fixed-bed reactor followed by a rutenuim promoted cobalt catalyst in the second bed. the activity, product selectivity and accelerated deactivation of the system were assessed and compared with a conventional single bed react...