1.- INTRODUCTION

The Baviera steam system for corrugators achieves, at the same time, energy efficiency and production flexibility.

Condesates are recovered with high pressure and temperature, and pumped back directly to the boiler, achieving this way energy efficiency optimization (fuel savings).

Pressures along the corrugator are controlled digitally and remotely, achieving this way the necessary flexibility (production quality & waste reduction). This flexibility is especially important with light weight papers and recycled papers (difficulties in glue penetration suggests inverse pressure regulation of the Double Backer)

Several controls guarantee adequate condensate drainage under any circumstance, ensuring optimal heat transfer.

Due to its conception and to the kind of components used (Spirals, Hybrid Traps, condensate pump, etc.), the Baviera Steam System is a long life maintenance free system.

2.- HEAT TRANSFER

The system supplies direct steam to the whole corrugator. There is one individual Hybrid Trap or Spiral at each roll or steam chest, in order to optimize heat transfer - that is to say, to obtain the maximum corrugator heating .

2.1.- Double backer. Spirals

Spirals are robust steam traps with absolutely no mobile parts and, therefore, a long life with no maintenance needs.

Spirals give a continuous condensate drainage and, at the same time, a continuous and controlled blowthrough steam flow that ensures a perfect degasification.

Please find a detailed explanation of spirals and their functionality further in the document.

2.2.- Single facers and preheaters. Hybrid Traps

Hybrid Traps are the combined result of Spirals’ and free ball steam traps’ evolution.  Hybrid Traps are two way traps:

- First way: free ball steam trap

- Second way: Baviera Spiral

The combination of the free ball and the Baviera Spiral system results in a highly efficient steam trap with no maintenance, long life, high energy efficiency and optimal heat transfer.

3.- ENERGY PROFIT.  FUEL SAVING

Baviera Steam Systems are closed steam circuits were condensates are recovered at high pressure and temperature, achieving energy savings that round 20% of fuel consumption.

3.1.- High pressure condensates recovery. CRU

Baviera Steam Systems include a Condensate Recovery Unit (CRU) that recovers condensate with high pressure and temperature, and feeds it back directly to the boiler with no energy losses to the atmosphere.

This equipment provides an approximate 20% energy saving (fuel saving). The CRU is normally placed in the boiler room.

A further description of the CRU equipment and its functionality is included further in the document.

3.2.- Double Backer condensates recovery. SPP & TSP

In order to make compatible the free pressure regulation of the Double Backer (or the Single Facers) with pressurized, closed circuit, condensate recovery, Baviera Steam Systems include electro pneumatic steam pumps (SPP & TSP).

These steam pumps use life steam to pump condensates from the Double Backer or Single Facer, up to the condensate recovery unit CRU.

A further description of SPP and its funcionality is included further in the document.

4.- FLEXIBILITY

Baviera Steam Systems give total flexibility to the corrugator, by enabling free pressure regulation with no energy losses to the atmosphere.

This is particullary important in the Double Backer because of the glue’s difficulties to penetrate the liner when dealing with light weight papers and recycled papers.

This flexibility is some times important in Single Facers too, especially when dealing with light weight papers and small flutes.

(Press on image to enlarge)

BAVIERA STEAM SYSTEMS. BSS