economic development,but also a significant contribution to the sustainable development of human beings.The carbon dioxide emitted by the combustion is much lower than the carbon dioxide absorbed by the plant growth,and it also helps to slow down the greenhouse effect and is the real green diesel fuel. 3 development status of bio diesel With the rise of oil prices,bio diesel has got more and more attention,and many countries have introduced policies and measures to encourage the development of bio diesel.Bio diesel production from 2004's 21.96 L soared to 98.41 L in 2007,an average annual growth of 25.48.At present,countries in the world,especially in developed countries,are working on the development of high efficiency and non polluting energy use technology.Europe has become the main production of bio diesel oil.The United States,Italy,France has built a bio diesel production device dozens.Development of bio diesel,raw material is the key.There are many kinds of raw materials to produce bio diesel,and all countries have chosen to have their own advantages in the production of raw materials.The United States uses genetically modified soybean oil,the European development of rape,some Southeast Asian countries are using their rich palm oil.Among them,palm oil,jatropha oil,algae bio diesel feed-stock is slowly rising.China began the research and popularization of bio diesel more than ten years ago,but the shortage of raw materials is an important factor to restrict the development of bio diesel.Our country although is the world's largest rapeseed,cottonseed,and peanut production in,as well as the global fourth largest soybean producer,but oil production cannot meet the needs of the people's daily food.According to statistics,in 2004 China's per ca-pita oil consumption of 17.6kg,the total demand of 13 million people of edible vegetable oil T,while the domestic oil production is only 1400 t.To this end,2004 annual imports of edible oil of 676 million T,which imports of soybean oil 252 million T,35.3 million tons of rapeseed oil,239 million tons of palm oil,soybean imports 20.23 million T,rapeseed 47 million.Therefore,in order to develop the bio diesel industry in China,we must take the problem of solving the raw material of bio diesel.Only to solve the problem of raw materials,bio diesel in our country to have a stable development direction.China's bio diesel production technology is mainly to conventional acid-base and modification of acid and alkali,solid molecular sieve as catalyst of practical technology and lipase as catalyst and super critical without catalyst technology reserve system.At present,China's bio diesel oil is mainly based on the poor quality of the waste gas,the use of acid and alkali catalyst.Because of the short process route,it is seldom to be treated with glycerol,which is usually only used as fuel oil.In the process of the use of vacuum distillation technology,to ensure that different raw materials can produce the same quality of bio diesel.As a result of our country has no unified standard of bio diesel,the product quality is different,buteconomic development, but also a significant contribution to the sustainable development of human beings. The carbon dioxide emitted by the combustion is much lower than the carbon dioxide absorbed by the plant growth, and it also helps to slow down the greenhouse effect and is the real green diesel fuel. 3 development status of bio diesel With the rise of oil prices, bio diesel has got more and more attention, and many countries have introduced policies and measures to encourage the development of bio diesel. Bio diesel production from 2004's 21.96 L soared to 98.41 L in 2007, an average annual growth of 25.48. At present, countries in the world, especially in developed countries, are working on the development of high efficiency and non polluting energy use technology. Europe has become the main production of bio diesel oil. The United States, Italy, France has built a bio diesel production device dozens.Development of bio diesel, raw material is the key. There are many kinds of raw materials to produce bio diesel, and all countries have chosen to have their own advantages in the production of raw materials. The United States uses genetically modified soybean oil, the European development of rape, some Southeast Asian countries are using their rich palm oil. Among them, palm oil, jatropha oil, algae bio diesel feed-stock is slowly rising.China began the research and popularization of bio diesel more than ten years ago, but the shortage of raw materials is an important factor to restrict the development of bio diesel. Our country although is the world's largest rapeseed, cottonseed, and peanut production in, as well as the global fourth largest soybean producer, but oil production cannot meet the needs of the people's daily food. According to statistics, in 2004 China's per ca-pita oil consumption of 17.6kg, the total demand of 13 million people of edible vegetable oil T, while the domestic oil production is only 1400 t. To this end, 2004 annual imports of edible oil of 676 million T, which imports of soybean oil 252 million T, 35.3 million tons of rapeseed oil, 239 million tons of palm oil, soybean imports 20.23 million T, rapeseed 47 million. Therefore, in order to develop the bio diesel industry in China, we must take the problem of solving the raw material of bio diesel. Only to solve the problem of raw materials, bio diesel in our country to have a stable development direction.China's bio diesel production technology is mainly to conventional acid-base and modification of acid and alkali, solid molecular sieve as catalyst of practical technology and lipase as catalyst and super critical without catalyst technology reserve system. At present, China's bio diesel oil is mainly based on the poor quality of the waste gas, the use of acid and alkali catalyst. Because of the short process route, it is seldom to be treated with glycerol, which is usually only used as fuel oil. In the process of the use of vacuum distillation technology, to ensure that different raw materials can produce the same quality of bio diesel. As a result of our country has no unified standard of bio diesel, the product quality is different, but