Protein Extraction

Protein is an important substance that constitutes the human body, and it is also the basic substance of human life. Separating valuable proteins from plants is a very important process. Plant protein is extracted from soybeans, peas, and the like via a common acid-salt extraction process. In addition to its nutritional value, plant protein has many important functional properties. In the process of producing protein powder, to increase the output and the extraction rate as much as possible, an increasing number of decanter centrifuges are used in the production line. ZK protein decanter for the protein production process can be used to wash, extract, concentrate, and clarify proteins.

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ZK SEPARATION Decanters for Protein Production Process

In producing protein powder, to improve the production efficiency and extraction rate as much as possible, ZK food-grade protein centrifuges are more and more applied to the production process line, playing an increasingly important role in the production process. The ZK protein centrifuge has a high-rigidity rotating rotor to ensure the bearings' service life under high-speed rotation. Simultaneously, it has a foam crushing device and a fully automatic cleaning program, which effectively improves the separation rate and reduces workforce maintenance costs. Fully enclosed high-speed centrifuges with high efficiency are gradually causing technological innovations in soy product production lines and are replacing traditional filter-type equipment.

Protein Extraction Centrifuge Parameters
Model LW250 x 1025E LW350 x 1435E LW450 x 1845E LW520 x 2150E LW580 x 2400E LW650 x 2600E LW750 x 2800E
Speed (rpm) 4500 3500 3200 3000 2800 2600 2200
Max G Force 2835 2435 2580 2620 2546 2460 2033
Main Motor (kW) 11 15 ~ 22 30 ~ 37 55 ~ 75 75 ~ 90 90 ~ 110 110 ~ 160
Back Motor (kW) 4 5.5 7.5 ~ 11 11 ~ 15 15 ~ 18.5 22 30
Capacity (m3/h) 2 ~ 8 4 ~ 15 10 ~ 40 15 ~ 70 25 ~ 80 30 ~ 90 40 ~ 100
Weight (kg) 1250 2500 4200 5200 6500 7800 11000
Dimension (mm) 2500x800x1150 3700x1050x1200 4300x1150x1400 5100x1250x1600 5520x1450x1700 6250x2000x1550 6500x2200x1600
Drive Type VFD + PLC + HMI
Bowl Material SUS2205(Duplex Stainless Steel) / SUS2304 (Duplex Stainless Steel) / 316L / 316 Centrifugal Casting
Screw Material SUS2205(Duplex Stainless Steel) / SUS2304 (Duplex Stainless Steel) / 316L / 316 Centrifugal Casting
Bearing SKF / NSK

Protein Extraction Process

Protein extraction process

ZK Protein Isolation Decanter Features and Benefits

  • High Rigidity Screw Rotor

    Decanter centrifuge is a typical double-rotor differential high-speed rotating device. Its separation factor in the protein industry is up to 3500G, which is the feature of a high-speed centrifuge. The rigidity of the rotor and the control of the unbalance amount are important factors for the stability of operation. ZK centrifuge is designed in strict accordance with JB/T 8051-2008 centrifuge drum strength calculation specifications. The screw rotor (flexible in high-speed state) is put under finite element modal analysis, so that the working speed is far from the first-order and the second-order critical speed to avoid the occurrence of resonance at high speed, ensuring the bearing service life and lowering vibration and noise.

  • Bubble Breaker

    At the acid-sinking section, the high-speed centrifuge will produce a large number of bubbles in the separation and liquid discharging processes. If the bubble is not broken, it is hard to take out protein. ZK protein isolation decanter is internally set with a bubble breaker, which plays a good role.

  • Discharge Device for Centripetal Pump with Pressure

    The bubble generated during the draining process of the centrifuge is easy to block the drainpipe, causing the fluctuation in the operating current of the centrifuge. ZK protein isolation decanter is internally provided with a discharge device for the centrifugal pump with pressure to avoid the supernatant being ejected at high speed. The device is particularly suitable for the condition that the liquid phase is directly input into the next section or the next working condition of equipment after separation. For example, in the protein separating process, the soybean milk after first and second extraction enters the acid precipitation tank, and if this device is used, the intermediate transition tank, the transfer pump, and related pipes and instruments are needless.

Protein Decanter Application Cases

  • protein decanter
    Soy Protein Extraction
  • protein centrifuge
    Soy Protein Isolate
  • Decanter centrifuges for protein extraction
    Protein Production

Why Choose ZK Decanter Centrifuge?

Reliable Quality

The bowl (core component) is made of SAF 2205 duplex stainless steel by centrifugal casting process, and its performance is superior to conventional 304 and 316. All weld joints have undergone flaw detection and thermal treatment, and are provided with certificates of conformity or records for traceability.

Stable Operation

The dynamic balance precision of the centrifuge is ≥ Class 2.5, which is superior to the requirement of the standard, so that the centrifuge can be operated smoothly and its longevity is extended. The noise of the complete machine is < 85 dB, the vibration intensity is < 7.1 (load) and 4.5 (no-load). It is equipped with a mechanical and electrical dual overload protection device to ensure safe operation.

long service
Long Service Life

The screw conveyor and bowl adopt of the most advanced, reliable and convenient wear-resistant treatment technology and structure in China. All bearings adopt original imported NSK/SKF bearings. The electric control box is made of electrical elements of famous brands such as Siemens and Schneider.

High Degree of Automation

ZK decanter differential speed automatic control technology can automatically adjust the screw conveyor’s differential speed, to prevent overload and blockage. The complete machine is equipped with bearing temperature sensor and vibration sensor, and is provided with alarms for main motor overload, differential over torque, low differential speed, etc. Meanwhile, its supporting frequency conversion (flameproof) control cabinet can realize automatic start and stop with one key.

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