The Top Discharge Centrifuge is designed for batch recovery, washing, and dewatering of filterable catalyst slurry from chemical reaction, catalyst reuse, regeneration, and product purification processes.

Catalyst slurry may contain catalyst particles, reaction liquor, solvent, fines, dissolved impurities, and residual process liquid. The separation stage must retain the catalyst effectively, reduce liquid carryover, support controlled cake washing when required, and allow the recovered solids to be transferred for reuse, regeneration, metal recovery, or further treatment.

This configuration is suitable for batch processes where catalyst particles can form a stable and filterable cake. Final suitability depends on catalyst particle size, fines content, cake permeability, slurry solids concentration, solvent properties, corrosion conditions, and discharge safety requirements.

• Filterable catalyst slurry recovery after batch reaction
• Catalyst recovery from hydrogenation or synthesis processes
• Supported catalyst separation from reaction liquor
• Precious-metal catalyst recovery, subject to process safety review
• Nickel, copper, cobalt, alumina, silica, or carbon-supported catalyst handling
• Catalyst washing before reuse or regeneration
• Spent catalyst separation before metal recovery or disposal
• Fine chemical reaction slurry filtration
• Solvent-based catalyst slurry dewatering
• Catalyst cake transfer to regeneration, drying, or recovery systems
• Batch solid-liquid separation for chemical process slurry
• Reaction residue removal where solids form a stable filter cake

Peony provides the batch filtration section between the upstream reactor or slurry tank and downstream catalyst reuse, regeneration, recovery, or treatment equipment.

Reactor / Slurry Tank → Controlled Feed → Top Discharge Centrifuge → Filtrate Collection / Recovery → Optional Cake Washing → Spin Drying → Top Opening → Catalyst Cake Discharge → Reuse / Regeneration / Metal Recovery

Peony can provide:

• Top discharge centrifuge selected according to batch size and slurry condition
• Filter cloth or filter media selection based on catalyst particle size and filtrate clarity
• Controlled slurry feed arrangement for stable cake formation
• Optional cake washing system for mother liquor displacement or impurity reduction
• Filtrate collection, solvent recovery, recycle, or treatment connection
• Top-opening and catalyst collection arrangement
• Corrosion-resistant product-contact material configuration
• Explosion-proof motor and electrical configuration, as required
• Nitrogen blanketing or inerting connection interface, as required
• PLC-controlled batch operation with safety interlocks
• Connection support for catalyst reuse, regeneration, drying, or metal recovery systems

1. Catalyst Slurry Feeding

Catalyst slurry enters the rotating basket through a controlled feed system. The feed rate is adjusted to support even basket loading and stable cake formation.

2. Filtrate Separation

Reaction liquor, mother liquor, or solvent passes through the filter medium and basket perforations before leaving through the filtrate outlet.

3. Catalyst Retention

Catalyst particles remain inside the basket while the liquid phase is discharged.

4. Filter Cake Formation

As feeding continues, the retained catalyst particles gradually build up as a filter cake on the inner basket wall.

5. Optional Cake Washing

Compatible wash liquid can be introduced to reduce residual reaction liquor, soluble impurities, or unwanted process residues retained between catalyst particles.

6. Spin Drying

The basket continues rotating to reduce free liquid retained in the catalyst cake before discharge.

7. Machine Stop and Top Opening

After the programmed separation cycle is complete, the centrifuge stops and the top cover is opened.

8. Top Cake Discharge and Collection

The dewatered catalyst cake is removed from the basket through the top opening and transferred to a collection bin, sealed container, regeneration system, metal recovery section, or downstream treatment process.

Stable Catalyst Cake Recovery

The basket filtration process retains filterable catalyst solids while allowing liquid to pass through the filter medium. This supports controlled recovery of catalyst particles from reaction slurry.

Optional Catalyst Washing

A controlled wash step can reduce residual reaction liquor, soluble impurities, or solvent carryover before the catalyst is reused, regenerated, or transferred for further processing.

Reduced Liquid Carryover

Filtration followed by spin drying helps reduce free liquid retained in the catalyst cake before downstream handling.

Flexible Filter Media Selection

Filter cloth material and micron rating can be selected according to catalyst particle size, fines content, filtrate clarity target, solvent compatibility, and cleaning method.

Direct Batch Process Connection

The centrifuge can be connected between a reactor, slurry tank, catalyst wash tank, solvent recovery system, regeneration unit, or metal recovery section.

Please provide:

• Catalyst type and composition
• Catalyst particle size range and fines content
• Catalyst value, reuse target, or recovery objective
• Slurry solids concentration
• Reaction liquor, solvent, or mother liquor composition
• Feed temperature and slurry viscosity
• Required batch capacity or daily processing capacity
• Required filtrate clarity
• Target cake moisture
• Cake washing requirement
• Corrosion condition
• Flammability, solvent vapor, or explosion-proof requirement
• Oxygen sensitivity or pyrophoricity risk, if applicable
• Required product-contact material
• Downstream catalyst reuse, regeneration, recovery, or disposal route
• Collection method after top discharge

Is a Top Discharge Centrifuge suitable for catalyst slurry recovery?

Yes, provided the catalyst particles can form a stable, filterable cake inside the basket. Particle size, fines content, slurry viscosity, and filtration behavior should be reviewed before final selection.

Can the catalyst cake be washed inside the centrifuge?

Yes. An optional wash system can reduce residual reaction liquor, solvent, or soluble impurities before final spin drying and discharge.

Can the separated filtrate be recovered or recycled?

Yes. The filtrate can be collected for solvent recovery, returned to the reaction process, reused in washing, or routed to further treatment according to the process design.

Is explosion-proof configuration available?

Yes. Explosion-proof motor and electrical configuration can be provided when required by the solvent, area classification, and plant safety standard.

Can this centrifuge handle precious-metal catalyst?

It may be suitable for recoverable precious-metal catalyst slurry when the solids are filterable and can form a stable cake. Filter media selection, loss control, collection method, and safety requirements should be evaluated carefully.

Peony welcomes distributor and agent cooperation with chemical equipment suppliers, reaction system integrators, catalyst regeneration contractors, fine chemical engineering companies, solvent recovery projects, and industrial separation partners.

We support centrifuge selection, filter media matching, catalyst washing design, material configuration, filtrate recovery connection, safety-oriented process discussion, installation guidance, commissioning support, spare parts, and after-sales service.

Send us your catalyst type, particle size, slurry solids concentration, reaction liquor or solvent information, batch capacity, target cake moisture, washing requirement, corrosion condition, and downstream catalyst handling arrangement.