Sanitary Horizontal Decanter Centrifuge for Egg Yolk Peptide Raw Material Separation

With consumers increasingly focusing on easily absorbed small-molecule nutritional supplements, egg yolk peptide has become a popular high-margin raw material for global functional food manufacturers. The production of egg yolk peptide includes enzymolysis, solid-liquid separation, membrane concentration and drying. The separation link directly determines the final peptide recovery rate and product purity. Traditional separation techniques have obvious drawbacks: static sedimentation requires large workshop space and several hours of standing, and a large amount of peptide liquid is wrapped in egg solid waste to cause serious loss. Plate-frame filter presses need frequent manual disassembly and cloth replacement, which easily leads to material secondary pollution and unstable batch quality. Such problems restrict large-scale, high-efficiency and low-cost production of egg yolk peptide. Under this market demand, sanitary horizontal decanter centrifuge technology has become the preferred separation solution for egg processing enterprises with its continuous sealed separation and high recovery performance.

Horizontal decanter centrifuge is a horizontal spiral unloading centrifugal separation device designed for food-grade material treatment. The internal rotating drum and conveying spiral run at a slight differential speed. After enzymolyzed egg mixed liquid enters the drum, high-speed rotation generates strong centrifugal force. Heavy solid egg residues are thrown to the inner wall of the drum and pushed out of the machine by the spiral conveyor continuously; light liquid peptide stock solution flows out from the overflow port at the other end. The whole separation process operates in a fully closed stainless steel cavity, effectively isolating air and miscellaneous bacteria to protect the activity of small-molecule peptides, and avoiding the oxidation and deterioration of protein hydrolysate caused by long-time exposure. It perfectly solves the industry pain points of low peptide recovery and unstable product quality brought by traditional separation processes.

Our factory independently develops and manufactures food-grade horizontal decanter centrifuge systems customized for egg yolk peptide production lines, suitable for egg liquid crude separation, enzymolysis liquid residue removal, egg white protein separation and other egg deep processing links. The integrated skid-mounted unit adopts full 304 sanitary stainless steel material for all material contact parts, equipped with wear-resistant anti-corrosion spiral assembly, dual frequency conversion differential speed control system, fully sealed feeding and discharging pipeline, and automatic CIP online cleaning and sterilization unit. The equipment complies with international food safety standards and can run continuously for 24 hours without shutdown. The optimized low-shear feeding structure reduces the destruction of peptide molecular chains during separation, maintaining the biological activity of target active ingredients and extending the service life of follow-up membrane concentration equipment.

Compared with static sedimentation tanks and filter press equipment, horizontal decanter centrifuges have outstanding comprehensive advantages in egg yolk peptide processing. First, continuous one-step separation greatly shortens the production cycle, and the processing capacity per unit area is more than 6 times that of traditional sedimentation equipment, effectively saving plant construction investment. Second, the spiral automatic slag discharge function eliminates frequent manual cleaning and filter cloth replacement, cuts labor input and auxiliary material consumption, and reduces long-term operation costs for factories. In terms of economic benefits, the centrifuge can fully separate solid residues wrapped with peptide liquid, improving the overall recovery rate of egg yolk peptide by more than 2%, directly increasing the finished product output and profit margin of enterprises. In addition, the fully closed operation environment avoids cross-contamination of materials, ensuring consistent purity and flavor of peptide liquid in each batch.

In the complete production flow of egg yolk peptide, the horizontal decanter centrifuge is arranged right after the enzymolysis reactor. After constant-temperature enzymatic hydrolysis, the mixed liquid contains insoluble egg shell residues, denatured macromolecular egg solids and target small-molecule peptide liquid. After treatment by the decanter centrifuge, dry solid egg residues are continuously discharged and can be recycled as feed raw materials; clarified peptide filtrate directly enters the ultrafiltration membrane concentration process without secondary filtration. By adjusting the differential speed, feeding flow and drum rotating speed, the equipment can adapt to enzymolysis liquid with different solid content and viscosity, realizing flexible switching of different egg peptide product specifications on one production line. It also matches perfectly with follow-up nanofiltration, reverse osmosis and spray drying equipment to form a complete closed egg peptide processing assembly line.

The standard technological process of horizontal decanter centrifuge for egg yolk peptide includes enzymolysis liquid cooling pretreatment, constant-pressure sealed feeding, high-speed centrifugal solid-liquid stratification, spiral automatic slag discharge, clarified peptide liquid collection, and regular CIP online cleaning and sterilization. The pretreated enzymolysis mixed liquid is stably delivered into the horizontal drum through a sterile delivery pump. Under centrifugal force, solid impurities settle on the drum wall and are pushed out by the spiral, while clear peptide liquid overflows from the liquid outlet for subsequent concentration processing. After the daily production task is completed, the intelligent control system automatically starts acid-base cycle cleaning to remove residual egg protein and grease dirt inside the drum and pipeline, restore separation efficiency, and guarantee stable production of the next batch of peptide raw materials.

With the global functional food industry continuously expanding and manufacturers paying more attention to raw material yield and green automated production, food-grade horizontal decanter centrifuge separation technology has become essential core equipment for upgrading egg deep processing production lines. It breaks through the efficiency and yield bottlenecks of traditional separation processes and has broad application prospects in the production of egg yolk peptide, egg white protein liquid and other egg-based nutritional raw materials.

Our company provides customized horizontal decanter centrifuge overall solutions for egg processing enterprises. We configure matched centrifuge models and complete supporting feeding, heat exchange and cleaning equipment according to daily processing volume, enzymolysis liquid viscosity and peptide purity requirements. We provide one-stop full-cycle services including equipment customized manufacturing, on-site installation and commissioning, process parameter optimization and long-term after-sales maintenance, helping global egg product manufacturers improve peptide recovery rate, reduce production costs and produce high-quality functional egg raw materials for the international health food market.