Screw press dewatering machine in the field of plant extraction to achieve full process optimization

1、Pre-processing of plant raw materials

Fruit and vegetable plant dehydration

Remove the excess water in the roots, stems, fruits and other plant raw materials by pressing to facilitate the subsequent extraction process. For example, when dealing with raw materials such as sugar beet, chrysanthemum, aloe vera, etc., the water content of raw materials can be reduced, reducing transportation and storage costs.

Fiber materials de-hybridization

Dehydration of plant leaves, stalks and other materials with high fiber content, separation of sediment, impurities and other inorganic substances, to enhance the purity of extracted raw materials.

2、Solid-liquid separation in the extraction process

Separation of active ingredients and residue

In the processing of plant extracts (such as traditional Chinese medicine extracts, fruit and vegetable juices), through the screw press to realize the efficient separation of liquid active ingredients and solid residues. For example, the extrusion and dehydration of dregs after extraction of traditional Chinese medicine can increase the concentration of the extracted liquid.

Low temperature processing to retain active ingredients

With screw extrusion technology, the temperature of the material does not rise, avoiding the destruction of heat-sensitive components (such as vitamins, polyphenols) in plants at high temperatures, which is applicable to the extraction process of fruit juices, anthocyanins and so on.

3、Optimization of concentration process

Reduce subsequent concentration energy consumption

Reduce the water content of the extract through preliminary pressing and dehydration, reduce the subsequent evaporation, membrane separation and other concentration process energy consumption and time. For example, pre-dewatering before the concentration of traditional Chinese medicine extract.

Increase the concentration of active ingredients

Pressing and dehydration of plant juice, directly enhance the concentration of target ingredients, such as pomegranate juice, sea buckthorn juice and other fruit and vegetable juice concentration and purification.

4、Residue resource treatment

Pharmaceutical dregs / plant residues dewatering and volume reduction

Processing of Chinese medicine dregs, fruit and vegetable processing residues and other wastes to reduce their volume and weight, to facilitate the use of resources (such as compost, biomass fuels) or harmless disposal, reduce environmental pollution.

Recovery of high-value components

Secondary extraction of plant residues after pressing, recovery of residual active ingredients (such as pectin, cellulose, etc.), to enhance resource utilization.

5、Typical application cases

Processing of Chinese herbal medicine: Dehydration of dregs after extraction of root herbs (e.g. astragalus, licorice), the water content can be reduced to below 40%.

Fruit and vegetable extraction: apples, blueberries and other fruits after juicing, dregs dewatered by pressing for dietary fiber extraction.

Biomass energy: cassava residue, bagasse and other plant wastes are made into biomass fuel pellets after dehydration.

Summary of technical advantages

High-efficiency dewatering: low water content of the residue, reducing the cost of waste residue treatment.

Continuous production: automated operation, suitable for large-scale plant extraction process.

Environmental protection and energy saving: reduce wastewater emissions, in line with the demand for green production.