Influence of a vent hood at the exit of exhaust flue gas and flue baffles in the firetube on the temperature and flow fields of a gas tank water heater, as well as thestructure and amount of heat transferred to the water tank has been studiednumerically using two-dimensional steady state finite element simulation.Observations show that without a vent hood, there is a downward gas flow in theflu...

Haze in China has been increasing in frequency of occurrence as well as the area of the affected region. Here, we report on a new mechanism of haze formation, in which coexistence with NOx can reduce the environmental capacity for SO2, leading to rapid conversion of SO2 to sulfate because NO2 and SO2 have a synergistic effect when they react on the surface of mineral dust. Monitoring data from ...

Heterosigma akashiwo is an excellent candidate for growth on industrial emissions since this alga has the ability to metabolize gaseous nitric oxide (NO) into cellular nitrogen via a novel chimeric protein (NR2-2/2HbN) and also tolerates wide fluctuations in temperature, salinity, and nutrient conditions. Here, we evaluated biomass productivity and composition, photosynthetic efficiency, and ex...

Flue gas originating from a coal-fired power plant was used as a carbon dioxide source for microalgae cultivation. Raw flue gas without scrubbing or desulfurization was diluted with compressed air in such a way as to attain 1%, 2%, and 4% CO2. Throughout the 2010, from May to October, growth response was studied. While sparging pure CO2, a proportionate increase in the biomass was observed corr...

A concise one dimensional thermal-hydraulic two-fluid model is presented for the numerical prediction of sulphur dioxide absorption from the flue gas onto drops of the water-limestone slurry in the vertical spray tower absorber. The model is based on mass, momentum and energy balance equations for each phase separately, i.e. downward falling droplets of water-limestone slurry and upward flowing...

Power production from coal combustion is one of two major anthropogenic sources mercury emission to the atmosphere. The aim this study analysis carbon footprint removal technologies through sorbents injection related 1 kg flue gases. Two sorbents, i.e., powdered activated and coke dust, were analysed. assessment included both direct indirect emissions various energy material needs life cycle in...

In order to comprehensively utilize copper smelting slag, the effect of strengthening measures on reduction rate kinetics, magnetic separation reduced pellet and volatilization residual valuable constituents were investigated in present study. Milling for mechanical activation was most efficient method improve slag compared addition Na2CO3 catalyst high reactivity reducing agent. The metallizat...

Oxy-fuel coal combustion with flue gas re-circulation is known to be one of the most promising methods for reducing CO2 emissions from coal combustion power plants. In the oxy-fuel system, the combustion atmosphere consists of only O2 separated from air and flue gas re-circulated from a stack. Therefore, the flue gas is dominated by CO2 without any nitrogen gas. The most attractive potential as...

The influence of gaseous ammonia and sulphur dioxide on the formation of 2378-substituted PCDD/F on a reference flyash from a municipal waste incinerator has been investigated using a laboratory scale fixed-bed reactor. The reference flyash samples (BCR-490) was reacted under a simulated flue gas stream at temperatures of 225 and 375°C for 96h. The experiments were carried out in two series: fi...