Research direction: centralized recovery of waste oil, development of marketable downstream chemical products, and solution of its security risks through market means.
Reason:
According to Chen Denglong, a professor who studies the comprehensive utilization of solid waste at Fujian Normal University in Beijing, the main component of gutter oil is oil. Although it has lost its nutritional value for re-consumption, it can be used to process and produce chemical products such as biodiesel, fatty acid, stearic acid, oleic acid, vegetable asphalt and glycerol. Moreover, fatty acids, stearic acid and oleic acid are all important raw materials for fine chemicals, which can be used to produce rubber, soap and paint. It can also be used as emulsifier, printing and dyeing auxiliary, industrial solvent and flotation agent.
Feng Shubo, a professor of science and technology in Hebei, Beijing, who developed a new one-step process for producing fatty acid methyl ester and biodiesel from waste cooking oil, said that 1.2 ~ 1.4 tons of waste cooking oil can be processed and refined to produce 1 ton biodiesel, which can fully meet the requirements of diesel vehicles after being properly blended with 0 # diesel oil. The experimental results show that the production of soot, black smoke, sulfur oxides and carcinogenic polycyclic aromatic hydrocarbons in biodiesel is greatly reduced. Feng Shubo pointed out that the main component of this biodiesel is fatty acid methyl ester, which can also be used to produce plasticizers and surfactants when the market is not good.
Zibo, Shandong Province is the concentrated place of fatty acid production enterprises in China. Wang Huansheng, director of the local Zichuan Huitong Oil Fine Chemical Plant, said that waste oil contains Beijing oil, vegetable oil and other ingredients. 1 ton waste cooking oil can produce 0.3~0.8 tons of fatty acids according to different qualities because of its complex composition, and fatty acids can be produced by hydrogenation separation. However, Wang Huansheng also said that the fatty acids, stearic acid, oleic acid, iodine value and acid value produced by gutter oil are not as good as those produced by raw materials such as cattle and sheep oil and soybean oil, but they can be used in fields with low requirements for these indicators, such as suspension concentrate.
"Using waste oil to produce chemical products is definitely a feasible way to solve its potential safety problems." Chen Denglong said this. Feng Shubo, who is studying the use of waste cooking oil to produce plasticizers and surfactants with high added value, said: "If waste cooking oil is used to produce chemical raw materials, it will not flow back to the table, nor will it endanger the health of ordinary people."
Experts said that the use of waste oil to produce a variety of chemical products is the greatest use of its use value. According to Feng Shubo, the apparent consumption of diesel in China last year was 654.38+38.59 million tons. According to the calculation of adding 10% biodiesel, the demand for biodiesel will reach130,000 tons. According to the calculation that 1~2 tons of waste edible oil can produce 1 ton of biodiesel, the demand of waste edible oil is more than100000 tons. At present, the amount of gutter oil resources produced in China is nearly 10 million tons every year, and the gutter oil produced in China can be completely digested only by producing biodiesel.
Zoomlion Environmental Sanitation Machinery Co., Ltd. has developed a resource treatment system for urban kitchen waste, which can convert kitchen waste into biogas, organic compound fertilizer, industrial grease and other products.
Research sub-topic:
1, study how to formulate policies to realize centralized collection and treatment of waste oil according to law;
2. Study on the optimization process of producing chemical products from waste oil;
3. Study how to make it profitable for related enterprises to deal with waste oil.