Aries Engineers

Mira Bhayandar, Thane, Maharashtra

The Horizontal Pharma Peeler is a batch type automatic / semi automatic filtering centrifuge. The axis of rotation of the basket in this centrifuge is horizontal. It is ideally suited for a clean room installation – ”through the wall” using a flexible membrane as required in pharmaceutical applications.

 

Filling

The suspension that is to be separated is filled into the horizontal, overhung perforated basket at a pre-selected loading speed. As a resultof the centrifugal force, the solid particles settle on the filter fabric on the basket shell.

The solids are retained by the filter fabric, suspension fluid flows through the forming filter cake, including the filter fabric and leaves the perforated basket through bore-holes in the basket sleeve.

During filling, the fluid level in the basket and the growth of the filter cake are controlled by sensors. Upon reaching the desired filter cake height the filling process is stopped automatically.

 

Intermediate spinning

Depending on the product, a filling process will be interrupted by intermediate spinning with increased speed, in order to free filling volume in the basket and continue the filling process.

Depending on the filtration reaction of the product, intermediate spinning will be repeated several times.

 

Washing the solids

As soon as the suspension fluid has been centrifuged, the washing the solids in the basket processis started. During this phase thewashing fluid is evenly distributed via a suitable washing pipe (nozzle pipe or orifice-type sprayer) throughout the whole length of the basket. As a resultof the centrifugal force, the washing fluid penetrates the filter cake, displaces the still sticking suspension fluid and leaves the basket in the same way as the suspension fluid during filling.

 

Spinning

In order to separate the fluid from the filter cake the basket is generally accelerated to the maximum allowable speed and kept constant at this speed. Kinetics of the spinning process depend on the solids and fluid parameters, the height of the filter cake and, naturally, the centrifugal force acting upon the fluid to be separated.

The residual humidity in the filter cake decreases over time under the constantcentrifugal force andasymptotically itapproachesa theoretical limit.

 

Discharging

After hydro-extraction and with the basket rotating, the filter cake is peeled layer by layer by means of a discharge device, which consists of a knife box which can be rotated and moved in linear direction.

The solids are then discharged via a suitable chute or a conveyor screw.

 

Residual heel removal

Generally, the solids are not completely removed, but a residual layer is left in the basket. It serves as a filtration accelerator for the next work cyclein order to obtain a filtrate that is as free from particles as possible.

However, this residual layer loses its permeability after several cycles and must be removed from time to time. This is done by separating the residual layer from the filter fabric by the useof a pressurized gas device thatblowsfrom the outside into the bore-holes in the basket shell.

The residue is then transported out of the centrifuge via the discharge device.

 

Cleaning

Cleaning of the interior of the centrifuge is often required after every cycle or several cycles, in order to ensure a defined product separation between two following batches, or to prevent an infection.

The inside of the centrifuge with all built-in devices can be completely cleanedwith an integrated CIP cleaning system without the need to open the centrifuge. 

 

 

Advantages:

•  Broad operational spectrum
•  Highest standards regarding cGMP
•  Fully automatic, validated CIP cleaning
•  All components in the process chamber can be inspected
•  Clean room installation (optional)
•  Use of pharmaceuticals compliant materials and sealing materials
•  Avoidance of potential sources of contamination

One of the simplest types of centrifuge widely used in the industry. The solid material is scooped outmanually from the top of the centrifuge.

Advantages :

• Manual removal of solids results in total protection of crystal structure.
• Extremely simple operation.
• Very low solids loss in filtrate.
• Distinct separation between mother liquor and crystal enable better
• product quality.

Available Features :

• Suspension / Mounting : Inertia Plate and Anti Vibration Mounts ( 4 Point Mounting ).
• Drive and Transmission : Variable Frequency Drive (Inverter)

Optional Features :

• Full Body Opening ( FBO ) for excellent accessibility for cleaning and maintenance Full Lid opening for accessibility for cleaning and maintenance
• Cake Thickness Monitoring System cGMP Construction Inerting System Vibration Monitorin

The process of Filtration is similar to other types of centrifuges, the difference being in the method of unloading the Solids. The Scraper cuts the Solid cake while the basket is rotating at a slow speed. The solids are discharged through openings provided in the Basket bottom and Bottom Base / Inertia Plate.

Details :

• FEEDING : A filter media is fixed to the cylindrical surface of a perforated basket. The feed slurry is directed to the basket wall using a feed pipe. Feeding is carried out while the basket is rotating at an appropriate speed. After the required cake is built, feeding is stopped. The centrifuge is run for some time to partially de-water the solids. Feeding can be repeated if there is adequate space for further build up of cake.
• WASHING : After feeding, washing is carried out by pumping wash liquid through the wash pipe.
• SPINNING : The basket is run at the spinning speed to complete the de-watering process.
• SCRAPING : The speed of the basket is reduced to the scraping speed (slow speed). A scraper knife cuts the solids, discharging them through the chute.
• HEEL REMOVAL - OPTIONAL : Some material remains on the filter media after scraping and is called residual heel. This heel can be removed by using the heel removal system.
• CLEANING IN PLACE - OPTIONAL : The centrifuge can be cleaned using a CIP system.
• LARGE CENTRAL OPENING Solid Discharge Openings : The ( Basket LCO ) picture shows openings in the basket. The picture below ( Bottom Base LCO ) shows the openings in the Bottom Trough. The large openings facilitates smooth flow of solids as compared to single kidney shaped side opening . Slide in Isolated Bearing Housing
• Design : The bearing housing is completely isolated from the solvent vapours or mother liquor, preventing the chances of corrosion of bearings. This design eliminates the need to access below the Inertia Plate / Bottom trough (difficult in a Bottom discharge with large central opening) for dismantling the Bearing Housing. Also, the bearing housing can be removed easily without dismantling connections like grease pipe and Nitrogen Blanketing.

This type is an improvement on the basic Manual Top Discharge Centrifuge. The machine has a dynamically balanced rotating basket with a conical shell for easy removal of filter bag with solid material. Our compact spring assisted lifting mechanism enables opening of lid by a single person. Alternatively, Hydraulic or Pneumatic arrangement can also provided.

Advantages :

• Easy and fast unloading without fatigue.
• Increased production because of reduced batch time.
• No residual heel.
• Crystal structure intact since no attrition.
• Useful for hard, slimy, crystalline and amorphous cake.
• Easy cleaning and maintenance due to fully opening outer body lid.
• Reduced Human contact.

Safety Feature : Our new locking system for basket top does not allowthe machine to start unless all basket locks are properly engaged.

Available Features :

• Basket : Basket is conical to facilitate easy removal of filter bag and prevent tearing of filter bag
• Suspension / Mounting : Inertia Plate and Anti Vibration Mounts ( 4 Point Mounting ).
• Drive and Transmission : Variable Frequency Drive (Inverter)

Optional Features :

• Full Body Opening for better accessibility for cleaning and maintenance
• Cake Thickness Monitoring System
• GMP Construction
• GMP Lifting Device
• Inerting System
• Vibration Monitoring

The chemical version of the horizontal peeler centrifuges are used for separating medium to large quantities of product that can be washed and then spin-dried. The centrifuges are designed for continuous operating with large product throughput.

 

Filling

The suspension that is to be separated is filled into the horizontal, overhung perforated basket at a pre-selected loading speed. As a resultof the centrifugal force, the solid particles settle on the filter fabric on the basket shell.

The solids are retained by the filter fabric, suspension fluid flows through the forming filter cake, including the filter fabric and leaves the perforated basket through bore-holes in the basket sleeve.

During filling, the fluid level in the basket and the growth of the filter cake are controlled by sensors. Upon reaching the desired filter cake height the filling process is stopped automatically.

 

Intermediate spinning

Depending on the product, a filling process will be interrupted by intermediate spinning with increased speed, in order to free filling volume in the basket and continue the filling process.

Depending on the filtration reaction of the product, intermediate spinning will be repeated several times.

 

Washing the solids

As soon as the suspension fluid has been centrifuged, the washing the solids in the basket processis started. During this phase thewashing fluid is evenly distributed via a suitable washing pipe (nozzle pipe or orifice-type sprayer) throughout the whole length of the basket. As a resultof the centrifugal force, the washing fluid penetrates the filter cake, displaces the still sticking suspension fluid and leaves the basket in the same way as the suspension fluid during filling.

 

Spinning

In order to separate the fluid from the filter cake the basket is generally accelerated to the maximum allowable speed and kept constant at this speed. Kinetics of the spinning process depend on the solids and fluid parameters, the height of the filter cake and, naturally, the centrifugal force acting upon the fluid to be separated.

The residual humidity in the filter cake decreases over time under the constantcentrifugal force andasymptotically itapproachesa theoretical limit.

 

Discharging

After hydro-extraction and with the basket rotating, the filter cake is peeled layer by layer by means of a discharge device, which consists of a knife box which can be rotated and moved in linear direction.

The solids are then discharged via a suitable chute or a conveyor screw.

 

Residual heel removal

Generally, the solids are not completely removed, but a residual layer is left in the basket. It serves as a filtration accelerator for the next work cyclein order to obtain a filtrate that is as free from particles as possible.

However, this residual layer loses its permeability after several cycles and must be removed from time to time. This is done by separating the residual layer from the filter fabric by the useof a pressurized gas device thatblowsfrom the outside into the bore-holes in the basket shell.

The residue is then transported out of the centrifuge via the discharge device.

 

Cleaning

Cleaning of the interior of the centrifuge is often required after every cycle or several cycles, in order to ensure a defined product separation between two following batches, or to prevent an infection.

The inside of the centrifuge with all built-in devices can be completely cleanedwith an integrated CIP cleaning system without the need to open the centrifuge.

 

 

One of the simplest types of centrifuge widely used in the industry. The solid material is scooped out manually from the top of the centrifuge.

Types:

• cGMP Model
• Non GMP Model
• MS Rubber Lined Model
• MS or SS Halar Coated Model
• FRP Lined Model

Variants (Based on size) :

• 24 inch MTD
• 36 inch MTD
• 46 inch MTD
• 60 inch MTD
• Custom Built

Technical Features:

• Suspension / Mounting : Inertia Plate and Anti Vibration Mounts ( 4 Point Mounting ).
• Drive and Transmission : Variable Frequency Drive (Inverter)
• Operating Panel: Flameproof
• Zero Speed Interlocking System
• Flame Proof Limit Switch/Proxy Sensor
• Nitrogen Purging Arrangement

Optional Features :

• Full Body Opening ( FBO ) for excellent accessibility for cleaning and maintenance
• Full Lid opening for accessibility for cleaning and maintenance
• Cake Thickness Monitoring System
• Inerting System Vibration
• Monitoring Cleaning in Place

Advantages:

• Manual removal of solids results in total protection of crystal structure.
• Extremely simple operation.
• Very low solids loss in filtrate.
• Distinct separation between mother liquor and crystal enable better product quality

This type is an improvement on the basic Manual Top Discharge Centrifuge. The machine has a dynamically balanced rotating basket with a conical shell for easy removal of filter bag with solid material. Our compact spring assisted lifting mechanism enables opening of lid by a single person. Alternatively, Hydraulic or Pneumatic arrangement can also provided.

Key Feature:Our locking system for basket top does not allow the machine to start unless all basket locks are properly engaged.

Types:

• cGMP Model
• Non GMP Model
• MS Rubber Lined Model
• MS or SS Halar Coated Model
• FRP Lined Model

Variants (Based on size) :

• 24 inch MTD
• 36 inch MTD
• 46 inch MTD
• 60 inch MTD
• Custom Built

Technical Features:

• Suspension / Mounting : Inertia Plate and Anti Vibration Mounts ( 4 Point Mounting ).
• Drive and Transmission : Variable Frequency Drive (Inverter)

Optional Features :

• Full Body Opening ( FBO ) for excellent accessibility for cleaning and maintenance
• Cake Thickness Monitoring System
• cGMP Construction
• cGMP Lifting Device
• Inerting System
• Vibration Monitoring

Advantages:

• Easy and fast unloading without fatigue.
• Increased production because of reduced batch time.
• No residual heel.
• Crystal structure intact since no attrition.
• Useful for hard, slimy, crystalline and amorphous cake.
• Easy cleaning and maintenance due to fully opening outer body lid.
• Reduced Human contact.

The process of filtration is similar to other types of centrifuges, the difference being in the method of unloading the solids. The scraper cuts the solid cake while the basket is rotating at a slow speed. The solids are discharged through openings provided in the Basket bottom and Bottom Base / Inertia Plate.

Types:

• cGMP Model
• Non GMP Model
• MS Rubber Lined Model
• MS or SS Halar Coated Model
• FRP Lined Model

Variants (Based on size) :

• 24 inch MTD
• 36 inch MTD
• 46 inch MTD
• 60 inch MTD
• Custom Built

Technical Features:

• Suspension / Mounting : Inertia Plate and Anti Vibration Mounts ( 4 Point Mounting ).
• Drive and Transmission : Variable Frequency Drive (Inverter)
• Safety Device: limit switch automatically cuts off power supply to the motor and the INTERLOCK prevents opening of the basket cover, until quite safe.

Optional Features :

• Fully automated (with use of AC inverter variable speed drive, PLC and automated valves)
• Zero Speed Interlock
• Charge regulator
• Vibration Tripper
• Nitrogen Purging Control System
• Vibration Monitoring System

Advantages:

• Modern design
• Sturdy construction
• Quick acceleration
• Low energy consumption and powerful efficient braking.