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Biodiesel production plant manufacturer

Biodiesel can be used as a substitute for petroleum fuels. The biggest feature of “biodiesel” is its renewability, clean-burning diesel replacement that is creating jobs. The resource will never be exhausted and improving the environment. The EPA has recognized biodiesel’s environmental benefits by classifying it as an Advanced Biofuel, making biodiesel the only commercial-scale fuel produced nationwide to meet the agency’s advanced criteria.

Biodiesel Of Raw Material

Biodiesel refers to fatty acid methyl ester or ethyl ester formed from vegetable oil (such as rapeseed oil, soybean oil, peanut oil, corn oil, cottonseed oil, etc.), animal oil (such as fish oil, lard, butter, sheep oil, etc.), waste oil or microbial oil and methanol or ethanol by ester conversion. Biodiesel is a typical “green energy”, with good environmental performance, good engine starting performance, good fuel performance, wide source of raw materials, renewable and other characteristics. It is of great strategic significance to develop biodiesel for sustainable economic development, promote energy substitution, reduce environmental pressure and control urban air pollution.

Biodiesel can be produced from vegetable oil and animal oil, but at present, fatty acids, swill oil, urban waste oil, and refined waste are used as raw materials. Not only the waste cooking oil produced by the catering industry, but also rapeseed oil, soybean oil, corn oil, cottonseed oil, peanut oil, sunflower oil, palm oil, and coconut oil, actually have the possibility of “transforming” into diesel oil.

Biodiesel is a kind of renewable and clean energy, which is a fatty acid methyl ester obtained after esterification and transesterification of animal and plant oil and short chain alcohols such as methanol.

Biodiesel is a typical “green energy”, with good environmental performance, good engine starting performance, good fuel performance, wide source of raw materials, renewable and other characteristics. In recent years, many studies have confirmed that whether it is a small, light diesel engine or a large, heavy diesel engine or a tractor, hydrocarbons are reduced by 55% to 60% after burning biodiesel, particulate matter is reduced by 20% to 50%, CO is reduced by more than 45%, and polycyclic aromatic hydrocarbons are reduced by 75% to 85%. Biodiesel refers to fatty acid methyl ester or ethyl ester formed from vegetable oil (such as rapeseed oil, soybean oil, peanut oil, corn oil, cottonseed oil, etc.), animal oil (such as fish oil, lard, butter, sheep oil, etc.), waste oil or microbial oil and methanol or ethanol by ester conversion. Vegetable oils and animal fats with a certain structural symbol of fatty acid glycerides (i.e., triglycerides) are often used as raw materials for biodiesel.

Parameter Comparison Of Biodiesel And Mineral Diesel

CharacteristicBiodieselMineral Diesel
20°C density(g/ml)0.880.83
40°C dynamic viscosity(m㎡/S)1.9-62-4
Flash point(OC in P and M closed cups)Not less than 13060
Calorific value(MJ/I)3235
Combustion efficiency(diesel=100%)104100
Sulfur Content(W%)<0.05<0.2
Oxygen content(V%)100
Burning 1kg of fuel by stoichiometry minimum air consumption(KG)12.514.5
Water hazard level12
Biodegradation rate after three weeks(%)9870
Flammability(cetane number)Not less than 49Minimun 46

Biodiesel Advantages

  • Good ignition performance:The cetane number is a quality index to measure the fuel performance of the fuel in the compression ignition engine. The cetane number of biodiesel is higher than 45 (45 for petrochemical diesel), and its ignition performance is better than that of petrochemical diesel.
  • More sufficient fuel:The oxygen content of biodiesel is higher than that of petrochemical diesel, up to 11%. The amount of oxygen required in the combustion process is less than that of petrochemical diesel, and the combustion is more sufficient than that of petrochemical diesel.
  • Wide applicability:In addition to being an alternative fuel for diesel engines such as buses and trucks, biodiesel can also be used as an alternative fuel for non-road diesel engines such as marine transportation, water power equipment, geological mining equipment, and fuel power plants.
  • Good versatility:There is no need to change the diesel engine, it can be directly added for use, and there is no need to add additional fueling equipment, storage and transportation equipment and special technical training of personnel (usually other alternative fuels may require modification of the engine before use).
  • Safe and reliable:The flash point of biodiesel is higher than that of petrochemical diesel, which is conducive to safe storage, transportation and use.
  • Energy saving and consumption reduction:Biodiesel itself is a fuel, and it can be mixed with petrochemical diesel in a certain proportion to reduce fuel consumption and improve power performance.
  • It has excellent environmental properties:The low sulfur content in biodiesel makes the emission of SO2 and sulfide low, which can be reduced by about 30% (70% when there is a catalyst); Human body damage is low.
  • Protect power equipment:The kinematic viscosity of biodiesel is slightly higher than that of diesel. Without affecting the atomization of fuel, it is easier to form an oil film on the inner wall of the cylinder, thereby improving the lubricity of moving parts and reducing the wear of parts.

Development prospect of biodiesel


Biodiesel production is being vigorously promoted to reduce oil imports. Funding is being raised to develop biomass energy, requiring that the use of biomass energy be tripled by 2010, and biodiesel is also listed as one of the biomass energy.
The international development situation of biodiesel is optimistic, and there are three main ways to produce biodiesel: first, the use of edible oil to produce biodiesel; The second is the use of bagasse fermentation to produce diesel; The third is the use of “engineering microalgae” to produce diesel.

Principles of biodiesel

In order to improve the production efficiency of diesel oil, it is more beneficial to improve the production efficiency of diesel oil by using enzyme immobilization technology and adding methanol in the reaction process. This immobilized enzyme (lipase) is derived from Candidaantaretica, which together with the carrier is made into a reaction column for diesel production at a controlled temperature of 30℃ and a conversion rate of 95%. This lipase can be used continuously for 100 days without loss of life. After the reaction liquid passes through the reaction column several times, the reactant is left to rest and the glycerin is separated out, which can be directly used as biodiesel.

In addition to the vegetable oil enzymatic production of biodiesel, there are also research results using bagasse as a raw material to produce high-quality diesel, it is said that 1 ton of bagasse energy is equivalent to 1 barrel of oil (31.5 gallons per barrel, 3.7853 liters per gallon).