Continuous treatment method of swill oil

Abstract

The invention relates to the technical field of biological energy sources, in particular to a continuous treatment method of swill oil, which comprises the following steps: uniformly mixing swill oil with distilled water, adding alkali to adjust the pH value to 6-9, adding candida antarctica lipase A, and uniformly mixing to obtain a solution to be subjected to enzymatic hydrolysis; and sequentially carrying out hydrolysis at 55-80 DEG C, primary sedimentation at 70-80 DEG C and secondary sedimentation at 80-95 DEG C on the liquid to be subjected to enzymatic hydrolysis to obtain the mixed fatty acid. The method provided by the invention is simple to operate, short in enzymolysis time, strong in production continuity, high in reaction yield and product quality and relatively stable, and is beneficial to improving the market competitiveness of fatty acid products.

Description

technical field [0001] The invention relates to the technical field of bioenergy, in particular to a continuous treatment method for swill oil. Background technique [0002] Swill oil comes from the waste of restaurants. With the rapid economic development and the rapid increase of urban population, the urban catering industry is increasing rapidly, and a large amount of swill oil is also produced. [0003] After treatment, swill oil can be hydrolyzed into fatty acids. Fatty acids are widely used and one of the most important basic chemical raw materials. Fatty acids can be further processed to produce biodiesel, soap, mechanical lubricants and mineral processing agents. At present, there are many methods for synthesizing fatty acids from swill oil in the market, but these methods have many defects, such as hydrolysis at high temperature and high pressure, or low-temperature hydrolysis with a strong acid catalyst, etc. The problem of low yield and low product quality; altho...

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Problems solved by technology

At present, there are many methods for synthesizing fatty acids from swill oil in the market, but these methods have many defects, such as hydrolysis at high temperature and high pressure, or low-temperature hydrolysis with a strong acid catalyst, etc. The problem of low yield and low product quality; although the method of synthesizing fatty acids by enzymatic hydrolysis of swill oil does not require high temperature and pressure or strong acid, has low requirements on equipment materials, good safety, and high reaction yield, it can be synthesized by enzymatic hydrolysis of swill oil The method of fatty acid has problems such as long enzymatic hydrolysis time, large fluctuations in reaction yield with small changes in reaction temperature and pH, and poor quality stability of fatty acids caused by poor production continuity.

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