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Steps and Applications of Separating Pineapple Juice Using a Tubular Centrifuge
A tubular centrifuge can be used to separate pulp fibers, suspended particles, and impurities from pineapple juice, improving its clarity and stability. It is suitable for juice processing, the food industry, and other related fields. Below are the detailed steps and precautions:
Pre-Treatment:
Raw Material Processing: Peel and cut the pineapple, then use a crusher or juicer to extract the initial pineapple juice.
Coarse Filtration: Remove large pulp particles and fibers (particle size >1 mm) using a sieve or vibrating screen.
Centrifugal Separation:
Feeding: Inject the pre-treated pineapple juice into the feeding system of the tubular centrifuge.
Parameter Setting: Adjust the rotational speed to 6,000-10,000 rpm (depending on the size of the pulp particles) to separate solids from liquids using centrifugal force.
Pulp Residue: Deposited on the inner wall of the centrifuge tube.
Clarified Juice: The lighter liquid phase is discharged through the outlet.
Continuous Operation: Some models support continuous feeding, making them suitable for large-scale production.
Collection and Post-Treatment:
Juice Collection: Collect the clarified juice for further sterilization, packaging, or concentration.
Residue Treatment: Collect the pulp fibers (which can be used for animal feed or jam production).
Equipment Cleaning: Thoroughly rinse the centrifuge with water or food-grade cleaning agents to prevent residual sugar from fermenting.
Efficient Clarification: Rapid removal of pulp and suspended particles, improving juice transparency.
Flavor Retention: Low-temperature separation minimizes damage to the natural flavor and vitamins of pineapple.
Flexible Adjustment: Adaptable to pineapples of different ripeness levels by adjusting the rotational speed.
High Capacity: Capable of processing hundreds of liters to several tons of juice per hour, suitable for industrial production.
Speed Optimization: Higher speeds (e.g., 10,000 rpm) are required for smaller pulp particles, while lower speeds can be used for larger particles.
Temperature Control: Operate at 10-25°C to avoid enzymatic browning or flavor loss caused by high temperatures.
Oxidation Prevention: Process the juice promptly after separation (e.g., nitrogen-flushed packaging) to prevent oxidation and discoloration.
Enzyme Treatment: If the juice contains a high amount of pectin, add pectinase for decomposition before centrifugation to improve clarity.
Juice Beverage Production: Production of clarified pineapple juice or mixed fruit juices.
Concentrated Juice Processing: Concentrate the separated juice into pineapple juice concentrate for baking or seasoning.
Byproduct Utilization: Extract fibers from pulp residue or use it for fermented products (e.g., fruit vinegar).
Laboratory Research: Analyze pineapple juice components (e.g., polysaccharides, protease activity).
Plate and Frame Filtration: Low cost but inefficient and prone to clogging, suitable for small batches.
Membrane Filtration: High precision but expensive equipment and frequent membrane replacement required.
Natural Sedimentation: Time-consuming with limited clarity, only suitable for home production.
By using a tubular centrifuge to separate pineapple juice, product quality and production efficiency can be significantly improved, making it a core technology in the industrial processing of fruit juices.
Product Paramenters|
Model
|
Bowl Speed
(rpm) |
Drum Volume
(L) |
Motor
(KW |
Dimensions, Overall (mm)
|
|
75
|
19000
|
2.2
|
1.5
|
760*450*1120
|
|
105
|
16300
|
6
|
2.2
|
840*500*1600
|
|
125
|
15000
|
8
|
3.0
|
900*550*1600
|
|
150
|
14000
|
10
|
3.0
|
1020*600*1600
|
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