The Impact Of Biomass (cow Dung) And The Coal Combustion On The Pollutant

The energy is the important material base of human survival and the development, and it is the driving force of economic activity engaged in humanity of each kind. With the development of human society and economy, energy consumption rise rapidly. However, the countries of the world are facing great challenges of energy shortage. Meanwhile, coal combustion emissions on the environment pollution a serious threat to the survival of human and animal and plant environment. Faced with this grim situation, People should be asked for the new energy sources to gradually reduce and replace fossil energy use. Among the many renewable energy resources, biomass energy as the only transportation and storage of energy, with a wide range of value. Among the many renewable energy resources, as the only transportation and storage of energy, biomass energy has a wide range of value.With the current large-scale development of animal husbandry in China and the widespread use of chemical fertilizer by people, as a problem, treatment livestock manure is facing our country. As one of a biomass energy, people store manure accounts for 22.6% of the total biomass energy. At present, the disposal method of people build manure is to direct dumping or as biological fertilizers, and it is not only inefficient use of biomass energy, but also very vulnerable to excessive eutrophication of water microorganisms. Meanwhile, China's pastoral areas of ethnic minorities directly burn cow dung, for cooking, heating, and the indoor environment will not cause pollution. If people build faeces as combustion of biomass and coal, both full of resources can be effective use and water pollution be reduced, also combustion emissions can be reduced. However, the combustion of biomass with coal of our country were limited to solid waste, wood chips, straw and so on. It is less for combustion burning of biomass(cow dung) and the coal.In order to facilitate the discussion of experimental results later, this paper gives a industrial and elemental analysis of both cow dung and coal sample, by which way their industry and sub-elements composition would be get. The results showed that cow dung contains more volatile matter than the coal, and less sulfur, low nitrogen content compared to coal. After that, successfully, we make the composite briquette biomass (biomass compound coal, BBC) by way of adding proper amount of additive to the raw materials of cow dung and coal. And its compressive strength and pollutant emissions were studied also.The results showed that with the increase of cattle the heat value of biomass combined coal reduced, but its heating value was higher than simple algebra. In the same molding conditions, the compressive strength of briquette biomass coal was higher than the normal coal, and its strength would increase with the increasing of biomass on condition that the intensity of biomass combined with the biomass briquette was controlled within a certain range. After the measurement of the pollutants from composite briquette biomass after burning, it was found that the emissions concentration of sulfur dioxide, nitrogen oxide have a very noticeable downward trend, and its proportion is lower than of the one of coal burning lonely.Finally, the use of coal burning biomass combined heat released by the value of composite briquette biomass economic analysis shows that when the cow dung to add more than 30% of the biomass that can produce economic benefits of composite briquette.