Nanostructured materials, such as zeolites and metal-organic frameworks, have been considered to capture CO2. However, their application has been limited largely because they exhibit poor selectivity for flue gases and low capture capacity under low pressures. We perform a high-throughput screening for selective CO2 capture from flue gases by using first principles thermodynamics. We find that ...

A desirable process for realizing a low-carbon society is the direct conversion of dilute CO2 from flue gases or air into highly concentrated hydrocarbons without need separate capture an...

The method of X-Ray Photo-electron Spectroscopy is used to determine the chemical state of the sulfur species present in fly-ash samples produced by burning a number of pulverized coal samples under reducing conditions in a continuous combustion furnace. The influence of submicron metallic constituents present in the flue-gases of the pyrometallurical systems on the state of the sulfur species ...

The operating principle of condensing boilers is based on exploiting heat from flue gases to pre-heat cold water at the inlet of the boiler: by condensing into liquid form, flue gases recover their latent heat of vaporization, leading to 10e12% increased efficiency with respect to traditional boilers. However, monitoring the energy efficiency of condensing boilers is complex due to their nonlin...

This paper presents and analyses results from experimental and CFD work undertaken on a 24 kW domestic natural-draught gas fired boiler. The effect of chimney height on boiler flue gases is being considered to address the need for increasing concern over environmental safety as well as saving of energy. A multi-component analysis computer (DELTA 2000 CD) is used to analyze the flue gases. 3D nu...

Combined power generation or cogeneration is a highly effective technology that produces heat and electricity in one device more efficiently than separate production. Overall effectiveness is growing by use of combined technologies of energy extraction, taking heat from flue gases and coolants of machines. Another problem is the dependence of such devices on fossil fuels as fuel. For the combus...

Portable instrumentation has been developed to measure halogen acid gases inside and around armored vehicles during fire suppression tests at Aberdeen Proving Ground. This technology is used to troubleshoot for leaks, conduct area sampling, and measure occupational exposure levels of toxic gases in air. A continuous denuder extracts the gases into an aqueous medium containing the appropriate io...

The emission of sulfur dioxide (SO2, also SO3) and nitrogen oxides (NO, NO2, called NOX) from burning fossil fuel, especially coal which is used to produce energy (electricity and heat) is one of the most important sources of environmental and air pollution. These pollutants are known as "acid gases" causing acid rain and also "indirect greenhouse gases" contributing greenhouse effect. Acid rai...