Adoption of Heat Recovery Technology in Sintering Process to Reduce Carbon Imprint

Authors

  • Abhijit Das RESEARCH AND DEVELOPMENT CENTRE FOR IRON AND STEEL, STEEL AUTHORITY OF INDIA LIMITED
  • Chandan Kumar RDCIS, SAIL
  • Smita Toppo RDCIS, SAIL
  • Santosh Kumar RDCIS, SAIL
  • Nityananda Mondal RDCIS, SAIL

Keywords:

Carbon lean technology, Iron making, Sinter Plant, carbon footprint, steel plant

Abstract

India is the second largest steel producer in the world after China. The 2017 National Steel Policy of India set out the ambitious plan of 250 MT steel production and per capita consumption to around 160 kg by 2030. The dominant iron-making route is blast furnace (BF), which is an energy-intensive process based on fossil fuel consumption. The steel industry contributes around 7% of all greenhouse gas (GHG) emissions. India pledged to reach net zero by 2070 at COP26 in Glasgow. In an integrated steel plant, approximately 6.0 Gcal heat energy is required for production of 1 tcs. In sintering process, an ample amount of heat energy is discharged to the atmosphere through cooler exhaust gases as well as flue gases (around 55% of total heat input). Sinter cooler exhaust gases have temperature in the range of 250–400°C. Research has been carried out to utilize sensible heat of these waste hot gases in progressive manner. Several technologies have been established for utilization of hot waste gases from sinter plant which reduces emission of harmful gases to the environment by drastically reducing the burning of coke. To utilize waste heat from sinter cooler for producing hot water, a system named, “Waste Heat Recovery System (WHRS)” was conceptualized, designed, installed and commissioned at machine#1 of SP-3, Bhilai Steel Plant (BSP). The paper illustrates the entire process of WHRS and its role in reducing overall energy consumption of sinter plant.

References

Teiji Shibuya et Al. “A system for the recovery of waste heat from sinter plant”, Transactions ISIJ, Vol 21, 1981, pg: 664-672

T. Yamagata, T. Futakuchi, Yasuaki M., Tateo Kawasawa, K. Kato “Sensible heat recovery of exhaust gas in sintering plant”, Transactions ISIJ, Vol 24 (4), 1984, pg:343

“Cleaner technology options for sintering plant of integrated iron & steel plant”; Central pollution control board (CPCB), Ministry of Environment & Forest, Govt. of India

“Maximizing Sintering Plant Heat Recovery”, https://steelplantech.com/wpcontent/uploads/2013/11/201203_Maximizing-Sinter-Plant-Heat-Recovery.pdf

C. Lloyd Williams, “Waste Heat Recovery Strategy for An Integrated Steel Works”, Doctoral thesis, Cardiff University, 2015

PAT Scheme: Normalization Document and Monitoring & Verification Guidelines – Iron & Steel Sector

Aneke, Mathew, “Optimising thermal energy recovery, utilization and management in the process industries”, Doctoral thesis, Northumbria University

Priyabrata Sahoo, Prof. O.P. Satyam, Jharkhand Rai University, “Sinter Plant Waste Heat Recovery Process and its benefits in Indian Steel Industry”, IJEAST, Vol. 6, Issue 3, 2021, pg: 167-171

Dr. Arvind C. Thekdi, “Waste Heat Management Options: Industrial Process Heating Systems”, E3M, Inc. August 20, 2009

Paddy Heaton, “Water Surface Tension For Different Temperatures”,youngscientist.com.au/wpcontent/uploads/2016/01/216-report.pd

Downloads

Published

2023-01-30

Issue

Vol. 12 No. 3 (2022)

Section

Articles

License

Declaration and Copyright Transfer Form

(to be completed by authors)

I/ We, the undersigned author(s) of the submitted manuscript, hereby declare, that the above manuscript which is submitted for publication in the STM Journals(s), is not published already in part or whole (except in the form of abstract) in any journal or magazine for private or public circulation, and, is not under consideration of publication elsewhere.

  • I/We will not withdraw the manuscript after 1 week of submission as I have read the Author Guidelines and will adhere to the guidelines.
  • I/We Author(s ) have niether given nor will give this manuscript elsewhere for publishing after submitting in STM Journal(s).
  • I/ We have read the original version of the manuscript and am/ are responsible for the thought contents embodied in it. The work dealt in the manuscript is my/ our own, and my/ our individual contribution to this work is significant enough to qualify for authorship.
  •  I/We also agree to the authorship of the article in the following order:

Author’s name                                    

 

1. ________________

2. ________________

3. ________________

4. ________________

 

We  Author(s) tick this box and would request you to consider it as our signature as we agree to the terms of this Copyright Notice, which will apply to this submission if and when it is published by this journal.