The results show that the extraction of citric acid with linear alkyl substituents has a good effect. The whole process includes 4 to 6 stages of extraction, 7 to 10 stages of reverse extraction and 2 to 4 stages of regeneration. This process can be further optimized and the overall efficiency improved by using a combined extraction centrifugal extractor.

1. ** Efficient extraction section **

In the 4 ~ 6 stage extraction section, the strong centrifugal force formed by the combined extraction centrifugal extractor through high-speed rotation makes the citric acid fully in contact with the extractant, and quickly realizes the separation and preliminary purification of the material. Its high separation capacity enables extraction efficiency of more than 99%.

2. ** Fine extraction section **

The next 7-10 stage is the key part of the process. In this step, the combined extraction centrifugal extractor continues to exert its high efficiency centrifugal force to ensure the efficient recovery of citric acid in the extraction agent, and the extraction efficiency reaches more than 90%, further improving the purity of citric acid

3. ** regenerated into segments **

In the stage 2 ~ 4 regeneration stage, the combined extraction centrifugal extractor can effectively regenerate the extractant and ensure that it can be recycled. The efficient operation of the equipment not only reduces production costs, but also reduces environmental pollution.

The separation efficiency and purity of citric acid were not only improved, but also continuous production and environmental protection were achieved. With its excellent performance and economy, the combined extraction centrifugal extractor has become an indispensable and important equipment in the production process of citric acid, which meets the needs of modern industry for efficient and low-pollution production.

Through this highly efficient citric acid purification process, production companies can better meet market demand, while reducing environmental pollution and resource waste, contributing to the sustainable development of the industry.