INTRODUCTION

Reductive Whitening SYSTEM BPEL

BPEL system (borohydride/bisulfite) it is the process of whitening more recent for recycling fibers. Is consists in the sequential addition of solution of Boropel 2810 and Bisupel 3011 To the mass of the fiber recycle to consistency media or high.
BPEL SYSTEM

Components

The whitening of the fiber are made in 2 forms:
1. Fibers not whitening and whitening groups formed attendants in the lignin they are modified chemically so as to reduce the light absorption. (oxidative whitening)
2. Coloring elimination.
BOROPEL 2810
12% Borohidruro de Sodio Técnico
40% Hidróxido de Sodio bajo contenido de
Fe+++
BISUPEL 3011
Solución líquida Bisulfito de Sodio al 38-40%
Grado técnico estándar
Producto líquido estabilizado
Fortificado con sales de fosfonato
BPEL SYSTEM

Reductive Whitening

▪ The bropel 2810 dis added to the fibers it is really small and fast.

▪ recommended application spots.
Pulp lines that possess scatters or mixing equipment for medium consistency.

▪ Both products are reducing agents.
The Bisupel 3011 its weak.
The Bisupel 2810 its strong.

▪ The BPEL system in contact whit cells, produce some sodium hydrosulfate. The mixture of this 3 reducing agents works synergistically giving a better result of whitening than any other agent acting individually.

BOROPEL 2810
NaBH4 + 8nAhs03
Sodium borohydride + sodium bisulfate
BISUPEL 3011
Na2S2O4 + NaBO2 + 6H2O
Hidrosulfito de sodio + Metaborato de sodio + Agua
INTRODUCTION

Dose and Recommendation Application

▪ The dose will depend in the quality of the raw material used.
▪ medium or high consistency application points such as the machine of the pool pump or dispenser and usually recommended for applications.
▪ Temperaturas de la pulpa > de 60 °C incrementan la eficiencia de blanqueo y elimina el colorante en la fibra reciclada.
▪ pulp PH before applying it on the BPEL system it has to be in moderate ranges, acid-alkaline (6.5-9)
PROCESS

Flow Chart

BPEL SYSTEM

Benefits

Security and Operation
▪ eliminates chemical manipulation in powder.
▪ Does not require units of logical dissolution.

Logistics
▪ Eliminates the requirement of caustic soda. 30-35% in reduction of shipment.

Performance
▪ Lower cost of application.
▪ Flexibility in the use facing changes if furnish.

Synergistic Effects
▪ Decorates a wide range of coloring presented in the recycling material.
▪ It allows the use of paper of inferior quality.
▪ Effective ahead of wide variations of the process conditions.
▪ Improvements in security and manipulation vs. conventional technology.
▪ Easy operation system.

IDB TEST

Towel

  • Dosis BoroHidruro(1.3-1.5) Kg/ton
  • El proceso IDB mostró mejores resultados en medio neutral/ alcalino comparado con el FAS.
  • El proceso IDB otorga blancura más alta en medio neutro que en medio alcalino.
IDB TEST

Napking

  • Dosis de solución de Borohidruro 1.8-1.9 Kg/ton
  • El proceso IDB mostró mejores resultados en medio neutro/alcalino comparado con el FAS.
  • El proceso IDB otorga blancura más alta en medio neutro que en medio alcalino.

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