INTERNATIONAL CLEANER PRODUCTION INFORMATION CLEARINGHOUSE

CASE STUDY # 184

1.   Headline:  Reduction in the Oil Consumption in the
     Synthetic Fiber Industry

2.   Background:  See below.

3.   Cleaner Production Principle:  Process modification

4.   Description of Cleaner Production Application:  This
     technology involves equipment modification to reduce oil
     consumption and hot air temperature.

     Case Study Summary

     Process and Waste Information:  In the finishing steps of
     manufacture of dissolving grade pulp, at Harihar
     Polyfiber, the pulp is dewatered, flash dried, baled and
     packed.  The mechanical dewatering was done to about 38%
     of dry content then the pulp was dried further to 70% of
     dry content using hot air at 300 Degrees C, generated by
     burning fuel oil.

     In order to reduce the oil consumption and temperature of
     the hot air, two dewatering booster presses were installed
     in series after the existing dewatering presses running in
     parallel.  This improved the dryness of pulp to +50% and
     the temperature of the hot air could be brought down to
     200 Degrees C.

     State of Development:  The clean technology is fully
     implemented.

     Level of Commercialization:  The clean technology is fully
     commercialized.

     Balances and Substitutions:  Improvement in dryness
     content of pulp by 50% and temperature of hot air is
     reduced from 300 Degrees C to 200 Degrees C.

6.   Advantages:  Economic benefits were a savings of Rs. 3.5
     million/year by reducing fuel oil consumption by about 14
     kg/tonne of pulp.  Furthermore, an improvement in pulp
     quality resulted by avoiding the "burnouts" due to higher
     temperatures of hot air.  Environmental benefits include
     reduction in fuel oil consumption.

7.   Constraints: No information provided.

8.   Contacts and Citation

     Types of Source Material:  Unpublished.

     Citation and Industry/Program Contact and Address:  Mr.
     Shailendra Jain, Senior Executive President, Harihar
     Polyfibers (GRASIM), Karnataka, India.

9.   Keywords:  India, textile, synthetic fiber, process
     modification, ISIC 2299, oil, energy saving.

10.  Reviewer's Comments:  This case study was originally
     compiled by the UNEP Working Group of Textiles.  It
     underwent a UNEP IE funded technical review in 1994 for
     quality and completeness.  It was edited for the ICPIC
     diskette in July of 1995.

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