According to the latest news from the National Standards Committee, the revision of the “Diesel Fuel Blending Biodiesel (BD100) National Standard”, which has received much attention from the industry, has made some progress. The standard has passed the review of the 13th Meeting of the First Petroleum Fuels and Lubricants Technical Committee (Product Group) and is expected to be released in early June of this year.

It is understood that compared with the “National Standard for Biodiesel Fuel Blending for Diesel Engines (BD100)” that was implemented on May 1, 2007, the revised new standard increases the alcohol content, ester content, monovalent metal content, and carbon residue. Control requirements, and corresponding changes to the flash point, acid value, sulfur content and other indicators. In the new standard, the flash point (closed) is modified from the original not less than 130°C to not lower than 101°C, the acid value is modified from not more than 0.8mgKOH/g to not more than 0.5mgKOH/g, and the monovalent metal content (Na+K) not more than 5mg/kg, ester content not less than 96.5%, sulfur content not more than 10mg/kg.

The communicative comrades said that because of the limitations of the production process and physical properties, the acid value of biodiesel is much higher than that of petroleum diesel. High-acid fuels can cause corrosion of engine components and increase carbon deposition; residual metals can lead to The engine is deposited and worn, and the pump malfunctions. As a result, the exhaust fumes of the diesel vehicle increase, the start-up is difficult, and the poisoning of the catalyst in the exhaust gas after-treatment device of the diesel engine is also caused. Therefore, the level of indicators such as acid value and metal content are all concerns and concerns of downstream companies, and are also an important reason for poor product acceptance. Therefore, these indicators need to be revised.

The Chief Engineer's Genomics also stated that the revision of this new standard should have a two-way and very large impact on the industry. On the one hand, the new standards have reduced flash point requirements and have relaxed requirements for 90% recovery temperature and carbon residue indicators. For biodiesel companies, the selectivity of raw materials increases, raw material sources are expanded, and production costs are reduced. The shortage of raw materials will be somewhat alleviated.