ZK LW430x1850C Decanter Centrifuge Used in DDGS Project

DDGS Production

Project Basic Info:

Name of Company: An edible ethanol & DDGS production company in Asia

Project Address: Asia

Model: LW430x1850C

Time: 02/2018

Project Content:

Corn, cassava, rice and wheat starch are the most widely used raw materials in the alcohol industry. More and more alcohol producers are using centrifuges to dewater their lees after fermentation and distillation. It solves the problems of large space, high labor intensity and high maintenance cost of traditional equipment, and at the same time, the high efficiency, stability and environmental protection of centrifugal dewatering provide a guarantee for efficient dewatering, DDGS quality and energy saving of subsequent processes.

When corn and tapioca are used as raw materials, the high sand content in the mash is an important factor affecting the stability and service life of the centrifuge. ZK SEPARATION centrifuge is equipped with high-performance wear protection materials throughout the machine, greatly extending the maintenance cycle and service life of the centrifuge.

Raw Material: Corn

Total Solids Content: ≤11% (including soluble solids content ≤2.5%)

Feeding Temperature: <90℃

Capacity: 12～15m³/h

Solid Phase Water Content: 66～70%

Liquid Phase Solid Rate: ≤1.2% (excluding soluble solids)

Providing Solutions:

1. ZK DDGS centrifuge has added solid particle-catching plates (referred to as spiral slant plate). When the solid suspended particles flow through the spiral slant plate, some of the solid particles can effectively adhere to the spiral slant plate and slide along the slant plate into the blade of the spiral conveyor to achieve continuous slag discharge. Compared with the ordinary centrifuge, it can improve the solid recovery rate by 20~30%.

2. Since DDGS slurry has different degrees of corrosiveness, such as hydrochloric acid or sulfuric acid used in the acidification process section, amino acid or acetic acid produced by fermentation, etc., the centrifuge has certain specificity in the selection of wear-resistant materials.

3. ZK centrifuges can generate more than 3000G centrifugal force, 30-50% higher screw pushing torque than ordinary centrifuges, and 10-20% longer bowl dewatering length than ordinary centrifuges.

4. The ZK centrifuge is equipped with a differential gear with high torque, high speed, low heat generation and excellent heat dissipation, thus ensuring the long-term and stable operation of the centrifuge.

Project Results and Customer Feedback:

The actual measurement of the liquid phase contains 5.6-6.2% solid (including soluble matter), the soluble matter is roughly 2-3.5%, the relationship between current and treatment volume is 1 square / A, the feed volume is about 14-16 square; solid phase water content of 66-67%. The radius of the liquid layer is R127, which is equal to the radius of the slag outlet. The customer is satisfied with the use effect.