Navigation Links
Fire without smoke
Date:3/31/2008

Could combustion without flames be used to build industrial gas turbines for power generation that are much more efficient than current models and produce almost no polluting emissions? Researchers in the Middle East provide a possible answer in the current issue of the Inderscience publication, International Journal of the Environment and Pollution.

Mohamed Sassi of The Petroleum Institute in Abu Dabi (United Arab Emirates) and colleagues, Mohamed Hamdi and Hamaid Bentcha, at the National School of Engineers of Monastir (Tunisia), explain that flameless combustion, or more precisely flameless oxidation (FLOX), has become a focus of industrial research. It has, they say, the potential to avoid one of the major noxious pollutants from gas turbines, NOx, or nitrogen oxides.

In flameless combustion, the oxidation of fuel occurs with a very limited oxygen supply at very high temperature. Spontaneous ignition occurs and progresses with no visible or audible signs of the flames usually associated with burning. The chemical reaction zone is quite diffuse, explains Sassi, and this leads to almost uniform heat release and a smooth temperature profile. All these factors could result in a much more efficient process as well as reducing emissions.

The team has now modeled flameless combustion in a so-called adiabatic combustor, of the kind typically used in gas turbine engines in which methane is burned to drive a turbine for electricity production. They carried out detailed calculations of reaction rates and have analyzed the chemical reactions taking place. "The main objective of our study was to provide a fundamental understanding of the physical and chemical processes that occur during combustion in high-temperature air or exhaust gases with a low content of oxygen," explains Sassi.

The results of the team's simulations clearly show that even at high operating temperatures and pressures, NOx emissions are reduced to very low levels, suggesting that flameless combustion could become an effective way of ameliorating pollution in power generation.


'/>"/>

Contact: Mohamed Sassi
msassi@pi.ac.ae
Inderscience Publishers
Source:Eurekalert

Related biology news :

1. Neuronal conduction of excitation without action potentials based on ceramide production
2. The benefits of 80 million years without sex
3. Coral reefs will be permanently damaged without urgent action
4. Surgery without stitches
5. New decontamination system kills anthrax rapidly without lingering effects
6. Faster koa tree growth without adverse ecosystem effects
7. Cigarette smoke, alcohol damage hearts worse as combo
8. Vitamin E may increase tuberculosis risk in male smokers with high vitamin C intake
9. Scientists discover how cigarette smoke causes cancer: Study points to new treatments, safer tobacco
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/19/2016)... -- The new GEZE SecuLogic access control ... system solution for all door components. It can be ... interface with integration authorization management system, and thus fulfills ... dimensions of the access control and the optimum integration ... considerable freedom of design with regard to the doors. ...
(Date:4/14/2016)... 2016 BioCatch ™, the ... announced the appointment of Eyal Goldwerger as ... Goldwerger,s leadership appointment comes at a time of ... deployment of its platform at several of the world,s ... discerns unique cognitive and physiological factors, is a winner ...
(Date:3/31/2016)... March 31, 2016  Genomics firm Nabsys has completed ... Barrett Bready , M.D., who returned to the ... original technical leadership team, including Chief Technology Officer, ... Development, Steve Nurnberg and Vice President of Software and ... company. Dr. Bready served as CEO of ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... 23, 2016  The Biodesign Challenge (BDC), a university ... to harness living systems and biotechnology, announced its winning ... New York City . ... showcased projects at MoMA,s Celeste Bartos Theater during the ... MoMA,s senior curator of architecture and design, and ...
(Date:6/23/2016)... ... 23, 2016 , ... STACS DNA Inc., the sample tracking software company, today ... Laboratory, has joined STACS DNA as a Field Application Specialist. , “I am ... and COO of STACS DNA. “In further expanding our capacity as a scientific integrator, ...
(Date:6/23/2016)... , June 23, 2016  Blueprint Bio, a company ... to the medical community, has closed its Series A ... Nunez . "We have received a commitment ... capital we need to meet our current goals," stated ... us the runway to complete validation on the current ...
(Date:6/23/2016)... ... June 23, 2016 , ... ... the Pennsylvania Convention Center and will showcase its product’s latest features from June ... be presenting a scientific poster on Disrupting Clinical Trials in The Cloud during ...
Breaking Biology Technology: