By R.P. Hesketh, Martin A. A. Abraham
This ebook defines environmental response engineering ideas, together with reactor layout, for the advance of procedures that offer an environmental gain. in regards to pollutants prevention, the point of interest is totally on new response and reactor applied sciences that reduce the creation of bad side-products (pollutants), however the use of response engineering as a method of treating wastes which are produced via different potential is usually thought of. First is a bit on environmentally benign combustion. the 3 papers talk about equipment of decreasing the formation of PAHs and NO
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ScL, 15, 289-338(1989). 5. Williams, Reduction of NOx Formation by Water Sprays in Strained Two-Stage Flamts, ASME J. Eng. for Gas Turbines and Power, 119, 836843(1997). 6. edu/gri_mech/, (1995). 7. H. Yamashita, D. Zhao, S. N. Danov, T. Furuhata and N. Arai, Numerical Analysis of NOx Reduction by Steam Injection Using Detailed Chemical Kinetics, Second Trabzon International Energy and Environment Symposium, 68, Trabzon, Turkey(1998). 8. H. Yamashita, Numerical Study on NOx Production of Transitional Fuel Jet Diffusion Flame, Trans.
Fossil fuels are by far the lowest cost energy source currently available. Today they account for - 8 5 % of the world's energy supply. After some concern about their long-term availability in the past decades, it is now realized that there are sufficient reserves to last for centuries to come. For instance, global coal reserves are put at 10,000 gigatons (Gt)^^^, whereas the world's yearly consumption of carbon is only ~6 Gt. The only remaining issue for fossil fuels today is their environmental impact, in particular, the large CO2 emissions resulting from their use.
1. As the initial temperature increases, the maximum flame temperature and the NO emission index increase. The relations between the NO emission index and the maximum flame temperature, which is derived from the above figures, are shown in Fig. 10. It can be seen from this figure that even if they are compared under the conditions of the same maximum flame temperature, the NO emission index decreases by increasing the amount of steam addition. This indicates that there exists the chemical reaction effect of steam addition on the reduction of NO as well as the physical effect of steam addition, that is, the decrease of flame temperature.