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It is understood that the Shanghai Food Safety Commission Office and other departments have reached a cooperation with the Engine Research Center to use the biodiesel produced by the kitchen waste oil for the auxiliary energy of the diesel generator set . In fact, since 2005, the research has begun. The study found that a blend of 10% biodiesel blended with 90% petrodiesel can be used without any changes to the engine of the diesel generator set. It has little effect on the engine's power, economy, durability and other indicators. However, biodiesel has increased oxygen and nitrogen oxide emissions, but “there is no such changeâ€.
Moreover, this mixed fuel containing waste oil has been tested on three diesel generator sets and 50 diesel taxis in Shanghai, with a cumulative operation of more than 1,000 hours. No significant impact on diesel generator sets has been found yet . However, some experts said that because the performance of biodiesel at this stage is not particularly stable, the added value is low, so it can not be fully used in diesel generator sets.
Biodiesel is a regenerative diesel fuel produced by a transesterification process using oil crops, aquatic plant oils, animal fats, and catering waste oil (commonly known as "ditch oil") as raw materials. Compared with petrochemical diesel, biodiesel has excellent environmental protection characteristics first, and has excellent performances such as low temperature start-up, good lubricating performance, high safety performance and renewability. Especially the biodiesel is generally better than petrodiesel and combustion residue. The material is slightly acidic, which effectively lengthens the service life of the catalyst and engine oil. In daily life, if biodiesel is blended with petrochemical diesel in a certain proportion, it can reduce fuel consumption, improve power, and reduce tail gas pollution.
Biodiesel, also known as fatty acid methyl ester, is mainly obtained from plant fruits, seeds, plant conduit milk, animal fat oil, discarded edible oil, etc., and is obtained by esterification reaction with alcohols (methanol, ethanol). Biodiesel has many advantages, such as a wide range of raw materials, can use a variety of animal and vegetable oils as raw materials; the use of biodiesel does not require any changes or replacement parts of existing diesel engines; compared with petrochemical diesel, biodiesel storage, transportation and It is safer to use, it does not corrode the container, and it is not flammable and explosive. After chemical compounding, its calorific value can reach 100% or more of petrochemical diesel; and it is a renewable resource, which reduces the pollution to the global environment.
In the 1980s, the United States, Japan, and many European Union countries have achieved considerable success in the research and production of biodiesel. The United States has established a number of large-scale "diesel forest farms" to plant high-energy energy plants to provide raw materials for biodiesel production. At present, the raw materials used for large-scale production of biodiesel in foreign countries are mainly soybean (United States), rapeseed (EC countries) and palm oil (Southeast Asian countries). Some research institutes also use biodiesel, such as cinder, wood chips, corn stems, and edible oil waste.
In addition to soybeans, rapeseed and other raw materials, China has introduced some plants with high oil content, low cost and easy planting to supplement the shortage of existing oil crops. Hong Kong is currently studying the introduction of B5 biodiesel, using waste oil from restaurants as raw material for production. Insufficient raw materials are solved by imported canola oil, and 5% biodiesel is mixed with 95% ultra-low sulfur diesel. To provide an "environmental way out" for Hong Kong's waste oil, on the one hand, to reduce emissions from diesel vehicles. However, such efforts have also met with opposition from the Hong Kong Automobile Chamber of Commerce and some oil traders. The progress has not been smooth.
At present, the use of vegetable oils as raw materials for the production of biodiesel and its commercialization, there are still many problems to be solved. The first is that the oil and fat molecules are larger, about 4 times that of petrochemical diesel, and the viscosity is higher, about 12 times that of No. 2 petrochemical diesel. Therefore, the injection time course is affected, resulting in poor jetting effect; the second is the volatilization of biodiesel. Low in nature, not easy to atomize in the engine, poor mixing effect with air, resulting in incomplete combustion, forming combustion coke, so that the grease tends to stick to the injector head or accumulate in the engine cylinder, which affects its operating efficiency, resulting in Cold cars are not easy to start and ignition delay problems. In addition, the injection of biodiesel, it is also easy to make the engine's lubricating oil thicker and thicker, affecting the lubrication effect. The third is the high price of biodiesel. At present, the pre-tax average price of domestic No. 100 biodiesel is about 4.2 yuan a liter, while the retail price of petrochemical 0 is about 3.2 yuan a liter. Due to price issues, biodiesel is currently used in urban public transport systems, diesel power plants, large diesel air conditioners, etc., and the application range is relatively narrow. The fourth is that although biodiesel can greatly reduce suspended particles, carbon dioxide and sulfur, it can not only reduce nitrogen oxides, but also raise it, so that environmental protection is limited.
Can diesel generators use biodiesel?
Diesel generator sets can use biodiesel? Diesel generators | Diesel generator prices / 2018-07-24
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