Bag Lifting Centrifuge for Amino Acid Crystal Harvesting

The Bag Lifting Centrifuge is designed for harvesting, washing, and dewatering amino acid crystals after purification and crystallization.

In amino acid production, the crystallized slurry typically contains amino acid crystals, mother liquor, residual salts, and soluble impurities. The centrifuge separates the crystals from the mother liquor, supports controlled cake washing, and reduces residual moisture before downstream drying, milling, screening, or packaging.

It is suitable for batch amino acid crystallization processes where crystal recovery, product purity, low product loss, hygienic handling, and reduced cross-contamination are important.

• L-lysine crystal harvesting
• L-glutamic acid crystal separation
• Glycine crystal dewatering
• DL-alanine and L-alanine crystal recovery
• L-leucine, L-isoleucine, and L-valine separation
• Methionine crystal harvesting
• Tryptophan crystal separation
• Aspartic acid and related amino acid crystal recovery
• Food-grade amino acid production
• Feed-grade amino acid production
• Pharmaceutical and nutraceutical amino acid intermediate processing
• Amino acid recovery after crystallization and purification

Amino acid crystallization systems often require more than simple liquid removal. The equipment must support product recovery while reducing crystal damage, dissolved product loss, and contamination between batches.

Typical operating challenges include:

• Fine or fragile crystal particles
• Variable crystal size after crystallization
• Residual mother liquor affecting purity
• Product loss during cake washing
• Residual salts or color impurities in the crystal cake
• High-value product recovery requirements
• Hygienic handling requirements
• Need for batch-to-batch consistency
• Frequent product grade changeovers
• Manual unloading and cleaning work

The Bag Lifting Centrifuge addresses these requirements through controlled centrifugal filtration, optional cake washing, gentle bag-lifting discharge, and batch-based PLC operation.

Peony provides centrifuge equipment and separation support for amino acid crystallization, purification, crystal washing, and downstream product recovery projects.

Process Evaluation

Our engineers evaluate:

• Amino acid type and crystal characteristics
• Crystal size and cake-forming behavior
• Slurry solids content and mother liquor properties
• Product purity and wash requirement
• Target cake moisture and downstream drying conditions

Equipment Selection

We help customers select:

• Suitable basket size and batch capacity
• Filter bag material and micron rating
• Filter screen and feed configuration
• Cake washing and spin-drying arrangement
• Bag lifting discharge system
• Product-contact materials, CIP option, and PLC automation level

The amino acid crystal slurry enters the rotating basket lined with a filter bag and supporting filter screen.

Under centrifugal force:

1. Mother liquor passes through the filter bag and is collected through the filtrate outlet.
2. Amino acid crystals are retained inside the basket.
3. A crystal cake gradually forms on the inner surface of the filter bag.
4. Optional wash liquid is introduced to reduce residual mother liquor, soluble salts, and other impurities.
5. High-speed rotation removes residual moisture from the crystal cake.
6. The machine stops after the programmed separation cycle is completed.
7. The filter bag containing the dewatered amino acid cake is lifted through the top discharge section.
8. The crystals are collected or transferred to drying, screening, milling, packaging, or further purification equipment.

The complete batch cycle can be controlled through PLC operation to maintain stable filtration, repeatable washing performance, and consistent crystal handling.

For fructose processing, product-contact components should be selected according to food-grade hygiene requirements and cleaning conditions.

To recommend a suitable Bag Lifting Centrifuge, please provide:

• Amino acid type and product grade
• Crystal size distribution
• Slurry solids concentration
• Mother liquor composition
• Feed temperature
• Batch volume or required capacity
• Target cake moisture
• Product purity requirement
• Cake washing requirement
• Downstream drying method
• Product-contact material requirement
• Surface finish and CIP requirement
• Installation area
• Power supply
• Explosion-proof requirement, if applicable

Peony welcomes distributor and agent cooperation in amino acid production, food ingredients, feed additives, pharmaceutical intermediates, fermentation-derived products, crystallization systems, and hygienic solid-liquid separation projects.

We support partners with centrifuge selection, process advice, filter bag matching, hygienic material configuration, cake washing design, CIP cleaning options, spare parts, and after-sales service.

Send us your customer’s amino acid crystal information, batch capacity, particle size, mother liquor composition, target moisture, washing requirement, and product-grade requirement. Our team will help evaluate a suitable Bag Lifting Centrifuge solution.