Abstract The formation of accretion layers within the waste heat boiler is a serious operational concern as it can potentially increase downtime and, hence, limit continuous production. In previous Computational Fluid Dynamics studies, was predicted for an industrial-scale boiler, using dust stickiness sub-routine model. this study, sampling campaign used to validate sub-routine. Furthermore, v...

The measurement of total mercury in flue gas based on an economical aluminum matrix sorbent was developed in this paper. A sorbent trap consisted of three tubes was employed to capture Hg from flue gas. Hg trapped on sorbent was transferred into solution by acid leaching and then detected by CVAAS. Hg adsorbed on sorbent was recovered completely by leaching process. The 87.7% recovery of Hg in ...

The flue gas of oil shale retort is characterized by high humidity, low sulfur content and tar content, which makes it impossible for traditional desulfurization facilities to deal with such normally. By collecting parameters at the inlet outlet original tower dry distillation gas, combining computational fluid dynamics numerical simulation, this paper analyzes fault reasons each step in proces...

A cyclone separator is an equipment that separates particles contained in a liquid or gas without filters. Dust flue gases can be separated using centrifugal forces and different particle densities so the exhaust must cleaned before being discharged into environment. The selection of optimal geometric dimensions operation parameters industrial always topical issue. In work, numerical modeling r...

The simultaneous removal of SO2/NO2 by limestone slurry was studied in a gas-liquid bubbling reactor. Experiments were carried out to find the effect of various operating parameters such as inlet concentration of SO2 and NO2, reaction temperature, O2 content in the flue gas and additive on the SO2 and NO2 removal efficiencies. SO2 removal efficiency decreased with inlet NO2 concentration, react...

Flue gas desulfurization is commonly known as FGD and is the technology used for removing sulfur dioxide (SO2) from the exhaust combustion flue gases of power plants that burn coal oroil to produce steam for the turbines that drive their electricity generators. The most common types of FGD contact the flue gases with an alkaline sorbent such as lime or limestone. As sulfur dioxide is responsibl...

Selective catalytic reduction (SCR) technology increasingly is being applied for controlling emissions of nitrogen oxides (NOx) from coal-fired boilers. Some recent field and pilot studies suggest that the operation of SCR could affect the chemical form of mercury (Hg) in coal combustion flue gases. The speciation of Hg is an important factor influencing the control and environmental fate of Hg...

Volumetric combustion has been developed to realize a high substitution ratio of biomass in co-firing boilers, which features an intensive flue gas internal recirculation inside furnace. However, the characteristics of NOx and SOx emissions in large-scale boilers with volumetric combustion were not fully clear. In this paper, an Aspen Plus model of volumetric combustion system was built up base...

Received Sept 4, 2000; Accepted Nov 13, 2000 Correspondence to: S. Kumagai, Department of Occupational Health, Osaka Prefectural Institute of Public Health, 1-3-69, Nakamichi, Higashinari-ku, Osaka 537-0025, Japan Abstract: Estimation of Dioxin Exposure Concentrations and Dioxin Intakes of Workers at Continuously Burning Municipal Waste Incinerators: Shinji KuMAGAI, et al. Department of Occupat...