Efficiency Improvement Strategies for Dyeing and Printing Mill Boiler – Case Study.

Abstract

In this paper, the findings of boiler house efficiency improvement study is
carried out in a large boiler house of a dying and printing mill has been presented. The causes
of poor boiler efficiency is various heat losses such as loss due to unburnt carbon, loss due to
dry flue gas, loss due to moisture in fuel, loss due to radiation, loss due to blow down and
loss due to burning of hydrogen, etc. The various heat losses were analyzed and certain
recommendations were made to the plant management for implementation in turn to increase
the boiler efficiency. Economic analysis reveals that the expenditure on the proposed system
will be recovered in a short span of time. This work, with only two recommendations
implemented, has resulted in net increase of 7.7% in overall boiler efficiency and an annual
saving of Rs. 44,47,352/-. In addition to this, regular monitoring of boiler operation can help
a great deal in optimizing the energy usage and also improve boiler efficiency.