SEBrite bleach
(An enzyme for the improved bleaching of Paper Pulps)
PRODUCT INTRODUCTION:
SEBrite bleach is a unique blend of different enzymes. It improves bleaching of paper pulps and reduces the dosage of harmful bleaching chemicals in subsequent bleaching stages. SEBrite bleach works by partially cutting the xylan precipitated on cellulose fibres during the pulping process. The enzyme treatment makes the pulp more porous and permeable to bleaching chemicals and promotes the removal of lignin in subsequent bleaching stages. SEBrite bleach has specific advantages of in that it is active at the slightly alkaline pH and elevated temperature typical of kraft pulps.
PRODUCT SPECIFICATION
Appearance: Off- white to Creamish powder
Solubility : Sparingly Soluble in water
Optimum pH: 6-8 (1% solution)
Loss on Drying: Max. 5% at 1050C in 1-2 hrs
APPLICATION PARAMETERS
| PROCESSING PARAMETER |
ENZYMATIC PREBLEACHING |
| Temperature |
45-55 ° C |
| pH |
6-8.5 |
| Dosage |
0.03-0.05 |
| Consistency,% |
8-10% |
| Retention time |
45-90min. |
*Every mill has unique conditions of the fiber furnish, pulping conditions and bleach sequence. Application protocols for SeBrite bleach will be optimized to best suit your specific process. Our expert Technical team can assist you in “optimization”
PERFORMANCE BENEFITS:
| PROCESSING PARAMETER |
ENZYMATIC PREBLEACHING |
| Reduction in Kappa No |
2-3 units |
| Improvement in Brightness% ISO |
2-3% |
| Reduction In Elemental Chlorine |
15% |
| Reduction In hypochlorite Dosage |
15% |
| Reduction In Post Color No. |
30% |
| Reduction In Absorbable Organic Halogens |
20% |
| Reduction in COD/BOD Ratio |
20% |
| Cost |
Reduction |
ENZYMATIC PRE-BLEACHING PROCESS
Flow Chart of Enzymatic Pre-Bleaching
PACKAGING:
SEBrite bleach is available in 25 kg HDPE bags.
STORAGE AND STABILITY:
SEBrite Bleach should be stored under cool conditions. Avoid direct sunlight.
SAFETY ANF ENZYME HANDLING:
Inhalation of enzyme dust and mists should be avoided. In case of contact with the skin or eyes, promptly rinse with water for at least 10 min
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