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SHENZHOU Decanter Centrifuge for Vegetable Protein and Starch Processing

The decades of experience in the field of centrifugal separation technology for vegetable protein and starch processing, intensive research and development and the related innovative ability of SHENZHOU decanter centrifuge guarantee the company’s customers throughout the world the technical lead which is necessary for successfully operating in global markets. A reliable decanter centrifuge is only really good if it meets all requirements for individual and customer- oriented solutions in the field of process engineering. Decanter centrifuge is widely used for extracting, concentrating, recovering and washing the protein and starch. Potential feedstocks including yellow pea, faba bean, mung bean, chickpea, lentil, soy, lupine, alfalfa, wheat, etc.

In protein production SHENZHOU decanter centrifuges are used for extracting, concentrating and washing the protein. Sophisticated drive systems ensure a high level of dry substance. The special drive developed by River enables the differential speed to be adjusted continuously to suit the protein volume to be separated. Only in this way can maximum dewatering rates be obtained. With the aid of adjustable impeller the decanter’s immersion depth can be adjusted with the machine running. With this system machine down time periods are avoided completely. Trouble-free optimum adjustment of the immersion depth also increases the relative clarifying surface, so that even minute particles are reliably separated out.

A vegetable protein manufacturing process essentially comprises protein extraction, purification, and drying, whether that process is used to make a concentrate or an isolate. The procedure also includes further processing of by-products, such as fibers, starch and soluble components in the water effluent streams. Clean-in-Place (CIP) and automation complete the installation to ensure reliable and hygienic production of vegetable protein ingredients for food and feed applications.
The starting material for protein extraction is often a flour — obtained from beans or seeds by dehulling, grinding and sieving — which is then mixed with water in a predefined ratio to balance cost-effectiveness with protein purity and yield. The pH of the mixture is subsequently adjusted to acid or alkaline, dependent upon the final product that is being manufactured.


Protein concentrate extraction
Liquid extraction of a protein concentrate starts with protein coagulation and separation of the precipitated proteins and insoluble fibers using a SHENZHOU decanter. Coagulation occurs at a pH around the isoelectric point or at elevated temperatures. The collected solid phase is then dried in either a ring dryer or spray dryer, depending on the type of product and the final use of the protein concentrate. This process results in vegetable concentrates with a protein level of at least 50%.

Protein isolate extraction
Protein extraction in lye
In alkaline extraction conditions, the protein fraction dissolves predominantly in the aqueous extract; this is the first step in making a vegetable isolate.

Protein precipitation and purification
The water phase obtained from alkaline extraction contains most of the dissolved proteins; these are subsequently precipitated out of the aqueous phase and separated in a decanter centrifuge. The water phase from the decanter — the whey fraction — mainly consists of salts and soluble carbohydrates.

The solid phase, which remains in the decanter, is known as the protein curd. This undergoes dilution, pH adjustment and thermal treatment before the proteins isolated from the curd are spray dried into the protein isolate powder. Carrying out additional washing in a disc clarifier centrifuge creates an even higher purity of protein isolate.

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Diameter(mm)Length(mm)Max Speed(Rpm)L/DCapacity(m3/h)Main Motor (KW)Auxilary motor(Kw)Dimesion(mm)

Company Advantages

Our factory has passed the ISO 9001 international quality certification.

We have always followed the standardization rules for a rigorous production process, saving time and cost for both parties and bringing maximum benefits to you.

We provide CAD and 3D design sketches. We perform three phases of QC to ensure product quality.

It is extensively used in chemical, pharmaceutical, biological, food, environmental protection and other fields.

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Welcome all who care engaged in the separation and filtration to work with us,and we are also looking for the qualified world wide agents to provide better service and deep marketing.

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