Application of Filter Press in Filtering Corn Syrup

Filter press plays a very critical role in the filtering process of corn syrup, especially in improving syrup purity, removing impurities, and optimizing product quality. The following are the applications of filter press in filtering corn syrup.

Why Use a Filter Press to Filter Corn Syrup?

During the production process, corn syrup undergoes a series of enzymatic hydrolysis, hydrolysis, and refining processes, but insoluble impurities such as protein residues, cellulose, pigments, or fine particles often remain after these processes. These impurities not only affect the appearance and stability of the syrup but may also affect the taste and shelf life. Therefore, a filter press is needed for filtration.

Filter Press Filtration Process

Syrup pretreatment
Heating the syrup to 40-60°C helps reduce viscosity; some factories will slightly adjust the pH according to process requirements; and add filter aids (such as diatomaceous earth or bentonite) to improve filtration efficiency and protect the filter cloth.

Filtration stage
Select polypropylene filter cloth with appropriate pore size, and determine the number of filter chambers and pressure settings according to the characteristics of the syrup. Start the filter press and pressurize it. The syrup enters the filter chamber through the feed pump, and the solid impurities are trapped on the filter cloth to form a filter cake. The clarified syrup seeps out of the filter cloth and is collected through the outlet pipe.

Diaphragm pressing (diaphragm filter press)
If you want to further reduce the moisture content of the filter cake, you can choose a diaphragm filter press, which can inject water or pressurize air through the rubber diaphragm to press the filter cake and reduce the moisture content of the filter cake.

Unloading and cleaning
Open the filter plate of the filter press and shake off the filter cake manually or automatically; flush the filter cloth with high-pressure water to prevent clogging;
Flush the pipes and filter chambers with clean water to prevent residues from fermenting or scaling.

Filter cake treatment and reuse
The filter cake produced after corn syrup filtration is mainly composed of protein residues, fibers, and other solids. These filter cakes can be used as animal feed raw materials, organic fertilizers, biomass energy pretreatment materials, etc.

The Function of Filter Press

Effectively remove suspended solids in syrup;
Improve the transparency and purity of syrup;
Reduce the burden of subsequent refining or concentration;
Improve the quality grade of the final product.

Conclusion

In short, the filter press plays a significant role in the application of corn syrup filtration, reducing a lot of burden for subsequent processing and greatly improving work efficiency.

Application of Filter Press in Filtering Corn Syrup