Lanzhou scientists use waste oil to make biodiesel
Highest yield of 92.4% The technology has obtained national patent
According to statistics, China consumes 12 million tons of vegetable oil each year. The catering industry in large and medium-sized cities produces 5 million tons of waste edible oil, and the oil mill directly produces 2.5 million tons of acid oil. Nowadays, these difficult-to-handle waste oils have new uses and destinations. Recently, a method for preparing biodiesel from discarded edible oils was developed by the research and development group of cobalt salt catalysts of the National Engineering Research Center for Fine Petrochemicals Intermediates of the Lanzhou Institute of Chemicals, Chinese Academy of Sciences. "The national invention patent was obtained. With this technology, renewable diesel fuel can be made instead of petrochemical diesel.
The research group of the Lanzhou Institute of Chemicals of the Chinese Academy of Sciences used raw materials such as restaurant waste oil, leftovers, and a mixture of the two as raw materials to obtain biodiesel through steps such as decontamination, dehydration, deacidification with an extractant, esterification, separation, and distillation. It is understood that the highest yield of biodiesel obtained with this technology is 92.4%. This kind of technology has the advantages of easy availability of raw materials and low cost. Compared with the existing technologies in the country, it also has the advantages of high catalyst efficiency, simple production process, short reaction cycle and low reaction temperature.
Glossary
What is biodiesel?
Biodiesel is a regenerative diesel fuel that can be replaced by petrodiesel made from oil crops, wild oil plants and engineered microalgae and other aquatic plant oils and animal fats, catering waste oil as raw material oil, is a kind of biomass energy, Outstanding environmental protection and reproducibility.
Experts predict that the use of reasonable raw materials such as China's restaurant waste oil, oil mill oil foot, stocks of expired oil and forest oil, can support large-scale biodiesel industry. If more stable oil sources are established in the future, the scale of China's biodiesel industry will continue to expand. He Yan Lanzhou Evening News
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