Buckau-Wolf
Vacuum Pans

Buckau-Wolf Vacuum Pans with honeycomb calandrias increase capacity by shortening the crystallisation time while simultaneously reducing power consumption.

Standard made
by Buckau-Wolf

Our portfolio includes the engineering, specification, calculation, and production of boiling devices in accordance with the European Pressure Vessel Directive (PVD) 2014/68/EC and the German regulations for the specification and manufacture of pressure vessels AD 2000-HP0.

We create inspection-capable CAD drawings, welding instructions, welding specifications, inspection plans and the relevant documentation in the desired language. This includes inspection reports, manufacturing drawings, manuals, risk assessments, declarations of conformity, material certificates, transfers of identification, pressure tests, process inspections and all other required acceptance documents.

We also conduct non-destructive testing on pressure vessels.

Buckau-Wolf vaporising crystallisers are equipped with patented honeycomb calandrias. These calandrias consist of pipes that are welded in a honeycomb pattern without a pipe bottom (pipe plate). This minimises the distance between plates and optimises the heating surface ratio.

A central circulation pipe and the stirrer ensure optimal mixing and a directed flow in the device and ensure a homogeneous suspension as well as intensive exchange of heat and micro-volume mixing.

The result is a better crystalline structure at a significantly reduced boiling time.


Summary

  • Recognised throughout the world for their high level of efficiency and top-quality sugar crystal
  • Retrofit to existing systems at any time
  • 25 % more heating surface for the same installation space in comparison to conventional pipe heating chambers
  • 75% reduction of depositing surfaces on the top side of the chamber

BWS honeycomb calandrias –
Overview of Advantages

  • The optimized chamber design ensures homogeneous crystal growth and improved CV values (variation coefficient) in the massecuite
  • Minimum redirection losses, dead zones, and local overheating
  • Best flow conditions guarantee a homogeneous strike, and the stirrer uses less power
  • Energy savings when vapour-cleaning the device
  • Expanded capacity by reducing the boiling time at identical steam quality or lower energy costs through lower steam quality at consistent boiling times; the resulting excess energy can e.g. be used to generate electricity.

Honeycomb Calandria
for retrofitting

Buckau-Wolf honeycomb calandrias for retrofitting can be installed into existing systems with little effort.

This applies in particular to the exchange of pipe calandrias, lenticular calandrias, and ring calandrias. During retrofitting, the pipe length and the heating surface are determined again and adapted to the demand of the sugar factory.



Benefits of retrofitted vaporizing crystalliser

  • Ready-to-install delivery of segmented Buckau-Wolf honeycomb calendria with or without stirrer
  • Retrofit to existing systems with ring, lenticular or pipe calandrias without modification of regulators, pipelines, devices or buildings
  • Boost the output of existing systems by up to 25% by enlarging the size of the heating surface
  • Low maintenance costs and a long service life

Buckau-Wolf honeycomb calandria as retrofit is used successfully by more than 250 vaporizing crystallizers worldwide.

Vaporising-
crystallisers

Application: cane sugar factory
Device diameter = 5,600 mm
Exhaust vapour level
Vapour pressure (mbar)
Vapour temperature (°C)
Magma colour (IE)
Boiling time (h)
Application: beet sugar factory
Device diameter = 4,300 mm
Exhaust vapour level
Vapour pressure (mbar)
Vapour temperature (°C)
Vapour quantity (t/h)
Old system Pipe calandria
V1
500
116
3.000
2,7
Old system Pipe calandria
3
610
113,5
8,63
BWS system Honeycomb calandria
V2
200
106
1.745
2,2
BWS system Honeycomb calandria
4
152
103,6
8,03
cane sugar
Device diameter = 5,600 mm
Exhaust vapour level mm
vapor pressure mbar
steam temperature °C
magma color IE
cooking time h
Rübenzucker
apparatus Ø = 4.300 mm
Brüdenstufe mm
vapor pressure mbar
steam temperature °C
amount of steam t/h
Old system Pipe calandria
V1
500
116
3.000
2,7
Old system Pipe calandria
3
610
113,5
8,63
BWS system Honeycomb calandria
V2
200
106
1.745
2,2
BWS system Honeycomb calandria
4
152
103,6
8,03

Intelligent processing

Vaporising
crystallisers

Continuous centrifugals

Discontinuous centrifugals

Contact Person

Lars Elschnig
Head of Sugar Technology

Tel.: +49 (0) 2181 602-270
Fax.: +49 (0) 2181 602-342

l.elschnig[at]bws-technologie.de

Related links

We are at your service, when you need us.

Callback Service

This field must be filled!
This field must be filled!
This field must be filled!
Invalid e-mail address!
This field must be filled!
This field must be filled!
This field must be filled!