Nickel was loaded on the activated carbon fiber(ACF) surface, by adsorption and sintering. In order to change the chemical functional groups on the carbon fiber surface, and increase catalytic oxidation capacity and removal efficiency of activated carbon fiber to element mercury. The samples of ACF were characterized before and after loading, using XPS and XRD. The results show that the nickel content in the ACF surface was 3.36at.%. The presence of nickel form was NiO and Ni. The adsorption ability of elemental mercury before and after modification was also studied. The breakthrough time was greatly extended after loading. At 95 , the ACF loaded nickel showed the best adsorption performance.

As to figure out the effect that modified fly ash, which is prepared by fly ash –CaO, and modified fly ash dust layer attached on the surface of the filter material adsorbed elemental mercury, experimental studies are administrated in a laboratory-scale fixed bed reactor system with gaseous elemental mercury produced by a mercury vapor generator and simulated flue gas composition. The experimental results indicated that the adsorption performance of fly ash and CaO relatively poor. The proportion of CaO in the modified fly ash will affected the mercury removal efficiency of the absorbent which prepared by fly ash and CaO. It will be an optimal effect when the blend ratio of the flying ash and CaO is 2 to 1, and the maximum removal efficiency is up to 34%.As the adsorption temperature increases the removal efficiency of the modified fly ash deteriorates. The efficiency of dust layer attaching on the surface of the filter material is getting higher with the larger porosity of dust layer and smaller particle material size.

In this paper, cobalt oxide was deposited on the surface of Activated Carbon Fiber (ACF) by adsorption and was then sintered. The effects of cobalt oxide on the properties of ACF were studied by XPS, FTIR, and XRD methods. Mercury removal performance was also investigated. 5% cobalt was well dispersed on the surface of ACF, and a variety of oxygen-containing groups had been enhanced. The chemical functional groups on the surface of ACF were changed to strengthen the adsorption and catalytic oxidation of ACF to the element mercury (Hg0). The measurement results showed that ACF coated with cobalt oxide had higher adsorption properties.

No abstract

Measurements of the vorticity field flowing around the front platen are firstly made with the IEA300 constant temperature hot wire anemometer and the six-sensor hot-wire probe, which is located on a 3-D movable frame for coordinate setting, in the tangentially fired furnace, Separated vortices excited appear at tail of multi-platen for compound fttnction being composed of spiral up flow and thin-plate airfoils, Six-sensor hotwire probe clata demonstrate many interesting features of the flow. Equicontours of mean longitudinal vortex show that separated vortices are distributed at tail ofmulti-platen in the upper furnace, It is firstly discovered that there are evidently separated venices at tai] of the front platen on the right half ofthe fumace exit. Also some yortices appear accompanied by another opposite yortex. Mean yelocity and vorticity data show that the velocity is higher but also the vonicity is 1arger nearby the right wall.