2 Main characteristics of bio diesel Bio diesel is a kind of biomass energy,which contains 77%carbon,12%hydrogen,11%oxygen and trace sulfur and nitrogen.Bio diesel as an exchange product of animal and vegetable oils,according to chemical composition analysis,is generally made of high fatty acid esters of 14--18 carbon atoms,and is very phase of petrochemical diesel oil.It is basically no sulfur and aromatic hydrocarbons,sixteen alkanes value of up to 52.9,can be biodegradable,non-toxic,harmless to the environment,can meet the requirements of the health impact of the u.s..In the process of producing bio diesel,the mineral energy per unit of each unit can be obtained by the energy of 3.2 units,and in all of the alternative energy,the unit value of the unit is the most.Compared with the use of petrochemical diesel,it opens high flash point, storage,use,transport are very safe,with many incomparable performance. (1)It has excellent environmental characteristics.Mainly due to low sulfur content in bio diesel,so that sulfur dioxide and sulfur dioxide emissions is low,can be reduced by about 30%(when the catalyst is 70%);bio diesel does not contain the environment will cause pollution of aromatic hydrocarbons,and thus the human damage to the human body is lower than diesel.Tests show that compared with ordinary diesel fuel,the use of bio diesel can reduce 90%of the air toxic and reduce the rate of 94%of cancer;due to bio diesel and high oxygen content,so that its combustion smoke less,a reduction of about 10%(95% of a catalyst)compared to carbon monoxide emissions from diesel;bio diesel biodegradable high. (2)A better low temperature engine starting performance.No additive cold filter point-20. (3)It has good lubricating properties.The wear rate of the fuel injection pump,the engine block and the connecting rod is low,and the service life is long. (4)It has better safety performance.Due to the high flash point,bio diesel does not belong to dangerous goods.Therefore,in the transport,storage,use of security is obvious. (5)Having good fuel properties.Cetane value is high,the combustion in diesel engine,combustion residue was slightly acidic,the service life of the catalyst and engine oil lengthened. (6)With renewable properties.As renewable energy,and oil reserves are different,and its supply of agricultural and biological scientists will not be exhausted. (7)Without changing the diesel engine,can be added directly to use.At the same time,no need to put gas equipment,storage equipment and personnel training in special skills. (8)Bio diesel to a certain proportion of the use of petrochemical and petrochemical,can reduce fuel consumption,improve power,and reduce pollution. It shows that the advantages of bio diesel is not only adapted to the current needs of the social and2 Main characteristics of bio diesel Bio diesel is a kind of biomass energy, which contains 77% carbon, 12% hydrogen, 11% oxygen and trace sulfur and nitrogen. Bio diesel as an exchange product of animal and vegetable oils, according to chemical composition analysis, is generally made of high fatty acid esters of 14--18 carbon atoms, and is very phase of petrochemical diesel oil. It is basically no sulfur and aromatic hydrocarbons, sixteen alkanes value of up to 52.9, can be biodegradable, non-toxic, harmless to the environment, can meet the requirements of the health impact of the u.s.. In the process of producing bio diesel, the mineral energy per unit of each unit can be obtained by the energy of 3.2 units, and in all of the alternative energy, the unit value of the unit is the most. Compared with the use of petrochemical diesel, it opens high flash point, storage, use, transport are very safe, with many incomparable performance. (1) It has excellent environmental characteristics. Mainly due to low sulfur content in bio diesel, so that sulfur dioxide and sulfur dioxide emissions is low, can be reduced by about 30% (when the catalyst is 70%); bio diesel does not contain the environment will cause pollution of aromatic hydrocarbons, and thus the human damage to the human body is lower than diesel. Tests show that compared with ordinary diesel fuel, the use of bio diesel can reduce 90% of the air toxic and reduce the rate of 94% of cancer; due to bio diesel and high oxygen content, so that its combustion smoke less, a reduction of about 10% (95% of a catalyst) compared to carbon monoxide emissions from diesel; bio diesel biodegradable high. (2) A better low temperature engine starting performance. No additive cold filter point -20. (3) It has good lubricating properties. The wear rate of the fuel injection pump, the engine block and the connecting rod is low, and the service life is long. (4) It has better safety performance. Due to the high flash point, bio diesel does not belong to dangerous goods. Therefore, in the transport, storage, use of security is obvious. (5) Having good fuel properties. Cetane value is high, the combustion in diesel engine, combustion residue was slightly acidic, the service life of the catalyst and engine oil lengthened. (6) With renewable properties. As renewable energy, and oil reserves are different, and its supply of agricultural and biological scientists will not be exhausted. (7) Without changing the diesel engine, can be added directly to use. At the same time, no need to put gas equipment, storage equipment and personnel training in special skills. (8) Bio diesel to a certain proportion of the use of petrochemical and petrochemical, can reduce fuel consumption, improve power, and reduce pollution. It shows that the advantages of bio diesel is not only adapted to the current needs of the social and