Characteristics and prospects of biodiesel

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Main introduce

Biodiesel concept: Biodiesel is a clean and renewable energy, it is based on biomass resources as a raw material to process a diesel (liquid fuel), the main chemical composition is fatty acid methyl ester. Specifically, animal and vegetable oils, such as rapeseed oil, soybean oil, peanut oil, corn oil, rice bran oil, cottonseed oil; and animal and vegetable oil leftovers acidified oil, fatty acids; animal oil: lard, chicken oil, duck oil, animal bone oil, etc. through a series of chemical conversion, refined liquid fuel, is a high-quality petroleum diesel substitution. Articles. Biodiesel is a typical “green energy”. It is of great strategic significance to vigorously develop biodiesel for sustainable economic development, promote energy substitution, reduce environmental pressure and control urban air pollution.

Main characteristics of biodiesel

Compared with conventional diesel, biodiesel has the following unmatched performance.

1, excellent environmental protection characteristics. It is mainly manifested in the fact that the sulfur dioxide and sulfide emissions from biodiesel are reduced by about 30% due to the low sulfur content in biodiesel, and there are no aromatic alkanes, such as benzene, which can cause pollution to the environment, so the harm of exhaust gas to human body is lower than that of petrochemical diesel. The results showed that the use of biodiesel could reduce the air toxicity by 90% and the cancer rate by 94% compared with ordinary diesel, and the emission of carbon monoxide was reduced by about 10% compared with diesel because of the high oxygen content of biodiesel, and the biodegradability of biodiesel was high.

  1. It has good low temperature engine startup performance and no additive cold filter point up to 20 C.
  1. It has better lubricity. The wear rate of fuel injection pump, engine block and connecting rod is low, and the service life is long. Motion viscosity is slightly higher, without affecting fuel atomization, it is easier to form a layer of oil film on the inner wall of the cylinder, thereby improving the lubricity of the moving parts, protecting the engine and reducing the wear of the parts.
  1. It has high security performance. Because of its high flash point, biodiesel is not a dangerous product. Therefore, it is safer to transport, store and use.

5, good combustion performance. Cetane number is high, oxygen content is high, combustion is better than petrochemical diesel, combustion residue is slightly acidic, engine oil life is extended.

6, renewable. As renewable energy, unlike oil reserves, its supply will not be exhausted through the efforts of agricultural and biological scientists.

  1. No need to modify the diesel engine, can be directly added to use, and do not need to add additional refueling equipment, storage equipment and special technical training personnel.

8, wide usage. It can be widely used in diesel engines such as trucks, trains, buses, trucks, ships, construction machinery, geological and mining equipment, agricultural machinery, generator sets, etc. It is also the best fuel for non-power industrial kilns, boilers and stoves.

Development prospects and significance of biodiesel


(1) national legislation and policy support

The Renewable Energy Law of the People’s Republic of China, which came into effect on January 1, 2006, clearly stipulates that “the state has listed the development and utilization of renewable energy as a priority area of energy, which protects the legitimate rights and interests of those who develop and utilize renewable resources according to law”. It is pointed out that “bio-liquid fuel” refers to methanol, ethanol and biodiesel produced from biomass resources.


(2) resources are very extensive.

One is the waste and by-products of various animal and vegetable oils, such as soybean oil, peanut oil, rapeseed oil, sesame oil, Tung seed oil, salad oil and so on; the other is the residue of lard, bone oil, acidified oil, fatty acids; the other is the gutter oil and swill oil collected in urban sewers. Three is the residual oil in fried foods. The “biodiesel” processed with the above raw materials has bright and transparent color and meets the requirements of national standard diesel with high calorific value, high horsepower and less exhaust gas. It is cleaner and more environmentally friendly than diesel. Processing biodiesel is a sunshine industry that turns waste into treasure and benefits the country and the people.

The development of biodiesel is a worldwide topic. Petroleum, as a non-renewable resource, has been increasingly exhausted. In China, petroleum is even more in short supply. Its reserves are only 2% of the world’s. Now, more than 100 million tons of oil are imported every year. It is estimated that 200 million tons will be imported five years later. The resource situation is very grim. Therefore, biodiesel as an alternative fuel for renewable energy has a unique application value. Developed countries produce biodiesel on a large scale. In the renewable energy strategy, the U.S. energy sector has raised the development of biodiesel to a strategic height. The Office of Combustion of Biodiesel (OFD) was established to take charge of this technology. The National Energy Agency (NEA) The annual production of biodiesel is expected to reach more than 12 million tons by 2010 and the tax exemption for biodiesel production is announced. Germany has adopted policies to encourage the production of biodiesel duty-free, and a large number of Benz, Volkswagen, Audi cars. China has invested a lot of manpower and financial resources in the development of alternative new energy sources. The Renewable Energy Law of the People’s Republic of China clearly points out that new energy sources should be vigorously developed, and puts forward bio-liquid fuel, new liquid fuel biodiesel, as a new type of green fuel can play an indispensable role. The complementary effect of substitution.


(3) inject power into the rural economic development of our city

The basic raw materials for developing biomass fuels are agricultural products. The development of biomass fuels can stimulate agricultural development. It can take a road to enrich the people and strengthen agriculture by transforming agricultural and forestry products into industrial products. It is conducive to adjusting agricultural structure and increasing farmers’income. Our city is a big agricultural city. The area of winter fallow fields and barren hills and slopes suitable for planting oil crops is very large. If we use winter fallow fields to cultivate new rape varieties with high oil content, the yield per mu can reach 200 kilograms. If we use 3 yuan per kilogram and 4 million mu winter planted rape in the whole city, we can increase the income by 2.4 billion yuan. At the same time, we encourage farmers to use barren hills and slopes to plant new rape varieties. Woody oil plants are also a great income.

Biodiesel has three advantages of renewability, cleanliness and safety, which is of great strategic significance to the adjustment of agricultural structure, energy security and comprehensive management of ecological environment in China.

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