A High Efficiency Filtration Solution for Jujube Pulp Deep Processing

Why is a High Temperature Membrane Filter Press Necessary for Jujube Pulp Deep Processing

Jujube pulp, as a natural and nutritious sweetener, requires crucial solid-liquid separation during its production process. This directly impacts the purity, yield, and taste of the final product. Jujube pulp is naturally weakly acidic, with a pH value typically between 4.7 and 5.1, and requires filtration at a relatively high-temperature of 70-80℃. This presents a significant challenge to the production equipment. It demands that the equipment withstand continuous acidic corrosion, meet the stringent hygiene standards of the food industry, and simultaneously satisfy high-efficiency process requirements. Against this backdrop, the application of high-temperature membrane filter press has become a key technology for improving product quality and production efficiency.

Design Advantages of High Temperature Membrane Filter Press

1. 304 Stainless Steel Material: Ensuring Pure Jujube Pulp and High-Standard Hygiene

The high-temperature membrane filter press is entirely encased in 304 stainless steel, containing over 18% chromium and over 8% nickel. This stainless steel forms a dense and stable passivation film on the surface in the acidic environment of jujube pulp, effectively resisting corrosion and preventing metal ion migration that could contaminate the product, ensuring the pure flavor and safety of the jujube pulp. Its smooth, corner-free surface facilitates thorough CIP (Cleaning in Place) or SIP (Sterilization in Place) processes, fully meeting the stringent hygiene requirements of the food industry and providing the most basic hardware guarantee for producing high-quality jujube pulp.

2. High Temperature Filtration Technology: Improving Jujube Pulp Filtration Efficiency and Economic Benefits

Jujube pulp contains a large amount of sugar, pectin, and fine suspended solids, resulting in high viscosity at room temperature and making filtration difficult. To improve filtration efficiency, the filter press needs to be operated at a relatively high temperature of 70-80℃ to reduce the apparent viscosity of the jujube pulp, increasing the filtration rate and throughput per unit time. The high-temperature membrane filter press uses high-temperature resistant filter plates, and the main body of the machine is encased in 304 stainless steel to ensure long-term stable operation under thermal conditions. This design not only ensures the efficiency of equipment operation but is also key to directly improving economic benefits.

3. Secondary Squeezing Function: Enhancing Jujube Pulp Extraction Rate and Product Quality

The core value of the membrane filter press lies in its unique secondary squeezing function. After initial filtration, compressed air or high-pressure water is introduced into the membrane chamber, causing the elastic membrane to expand and subject the filter cake to secondary pressing. Secondary squeezing more thoroughly separates the precious juice retained between the fruit pulp fibers, significantly reducing the final moisture content of the filter cake and increasing its solids content. Its direct benefit is a significantly increased jujube pulp extraction rate, reduced loss of nutrients and flavor substances, resulting in a richer, more concentrated, and more stable jujube pulp product. Simultaneously, the drier filter cake reduces waste disposal, aligning with the principles of clean production and sustainable development.

By employing high-temperature membrane filter press, jujube pulp producers can achieve precise material separation while ensuring food safety and hygiene standards. This ensures that every drop of jujube pulp meets high purity and high quality requirements, enhancing the competitiveness of their products in the market. For more information on filtration solutions for the food industry, please contact Quanhong Filtration.