Technology - Hunan Fengzhili Automation Equipment Co., LTD

Technology

Mainstream technology

There are three main methods for preparing biodiesel:

Chemical method
Supercritical
Enzyme catalyzed

Currently, chemical methods are widely used. This technology route uses strong acids and bases as catalysts to complete the esterification and ester exchange reactions of fats (fatty acids) with low-carbon alcohols such as methanol or ethanol. This scheme has a high reaction temperature (usually 110-130 ℃), fast reaction rate, and high conversion rate. However, due to the use of acid-base catalysts, the equipment is severely corroded, and more importantly, it brings a large amount of wastewater

The supercritical method solves the problem of pollutant emissions well without using catalysts, but due to the high temperature and pressure conditions required for the reaction (7-8MPa, 260-280 ℃), the equipment investment and operation maintenance costs are relatively high; The material is prone to coking and carbon deposition at high temperatures, which places high demands on the selection and pretreatment of raw materials.

Enzymatic synthesis of biodiesel involves the methylation reaction of oil and methanol under the action of lipase at room temperature and pressure. The main advantage of this method is that it does not use any acid-base catalysts at all, and the production process does not produce any waste liquid that has an impact on the environment. The small amount of wastewater generated during the process can meet the discharge requirements with conventional sewage treatment processes; At the same time, th

The main problem that hindered the early promotion of biological enzyme methods was the high cost of enzyme preparations and strict selection of raw materials. However, after years of development, the cost of enzyme preparations has now been reduced to an affordable range and can be applied to most waste oils and fats. With the gradual expansion of enzyme production scale, enzyme preparations will be more cost-effective in the future.

Own technology

In order to better meet the needs of improving the safety, environmental protection, and cost-effectiveness of biodiesel production processes, while considering the actual quality of waste oil, the company has independently developed a new biodiesel synthesis process that combines biological enzymes and fixed metal catalytic bed technology. This process not only demonstrates significant advantages such as high stability, continuous and controllable operation, and simplified process, but also mee