Energy Efficiency
RINL adopts holistic approach towards energy management since inception as it believes
that effective energy management is
key to improving organisation bottom line
and achieving sustainability. Energy Cost
accounts for about 1/3rd of manufacturing cost of
steel making and RINL focussing on reducing
energy consumption through multipronged
approach of technology deployment, capacity building and systemic improvement.
The approach of RINL
towards energy efficiency
a)
Adoption of State of Art Cleaner Technologies
b)
Continuous improvement of energy consumption through process management
c)
Energy Efficient Equipment Procurement
d)
Implementation of Energy Management System
Adoption of State of Art Cleaner Technologies
Design
Stage
-
Coke Dry
Quenching Plant (4Nos) to recover waste heat energy of hot coke to generate
electricity, process steam and chilled water. Back Pressure Turbine stations
(2*7.5MW) and Condensing Extraction Turbine (13 MW) is installed at RINL.
-
Top Pressure
Recovery Turbine at BF1 &2 (12 MW each capacity) to convert waste pressure energy
of Blast Furnace gas to electricity.
-
LD Gas
Recovery system at Steel Melt Shop-1 &2 to recover LD gas from converter blowing for use as
fuel in reheating furnaces
-
Evaporative
Cooling System to generate process steam from cooling of reheating furnace
skids and posts
-
Preheaters in
Calcination plant kilns and Gas and air recuperators in Rolling Mills to recover
waste heat from combustion systems.
These measures
reducing energy consumption by 2,22,842 tonne of oil equivalent (toe) and GHG emissions by 13.32 lakh tons annually. Read More
Expansion and Modernization of existing facilities
-
New Energy and Industrial Technology Development Organization (NEDO) Model Project on Sinter Cooler Waste Heat Recovery to generate 20.6 MW of electricity using heat energy of hot sinter. This project is taken up as part of international cooperation project between India and Japan
-
BF3 Stoves
Waste Heat recovery to recover waste heat from stoves of Blast Furnace-3
-
Energy
efficient burners and waste Heat Recovery system in Sinter Plant-2
-
Pulverised
Coal Injection in Blast Furnaces to substitute coke in Blast Furnace
-
Billet Caster
in Steel Melting Shop-2
-
Energy
efficient Vertical Shaft Kiln
-
Energy
Efficient Air Separation Unit
-
120MW BF Gas
based captive power plant to utilise surplus BF gases for power generation
-
Rebuilding of
BF-1 Furnace with energy efficient features and higher productivity
-
Rebuilding of
BF-2 Furnace with energy efficient features and higher productivity
-
Capacity
Enhancement of Sinter Plant 1 &2 along with envisaging energy efficient
features( energy efficient burners, variable frequency drives)
Completion of these projects shall reduce specific energy consumption by about 5
Lakh toe (ton of oil equivalent)
Power generation through waste energy
RINL installed waste energy recovery technologies to recovery waste energy for generation of electricity. RINL is meeting about 56% of power requirements through utilization of waste energies at present. RINL fully geared to utilize waste gases generated during expansion of steel works from 3 Million ton to 6.3 Million ton per annum. With this, the share of power generation from waste energy is to go up to 62% which is the best in Indian Steel Industry.
Continuous improvement of energy consumption through process management
RINL always believe that
continuous improvement through process management is possible .With the
involvement of Departmental Energy Teams at grass root level and implementation
of suggestion scheme and quality circles, RINL is able to reduce energy
consumption significantly. Some of Process management initiatives are
-
Continuous
monitoring of generation and distribution of by product fuels and resulted in
diversion of more surplus gases to power plant and reduced bleeding losses of
fuels & utilities. Due to these efforts, surplus by product gases is diverted to
Thermal Power Plant and saved 12 lakh tons of boiler coal annually.
-
Reducing coke
consumption in Blast Furnaces by proper blending of raw materials, Optimizing
AL2O3/SiO2 ratio and Oxygen enrichment of Blast.
-
Optimizing
thermal energy consumption by deep bed sintering in sinter plants,
-
Introduction
of hot charging in WRM and reducing heat losses in furnaces
-
Electrical
Energy management through maximizing captive plant electricity generation,
demand side management during peak hours, Reducing field currents in DC motors
of rolling mills, Unification of strands in MMSM and Bar Mill, up gradation of
frequency converters in MMSM. Read More
Energy efficient equipment procurement
-
Replacing
existing chillies with energy efficient one in Chilled water plant 3 &4
-
Circulation
fan of Sinter Cooler Waste Heat Recovery using life cycle costing.
-
Star Rated
Air Conditioners
-
Energy
efficient Motors
-
Installing
variable frequency drives in electrical systems
-
Energy
Efficient (T5) lamps
-
Energy Savers
in lighting systems Read More
Green Products
International Cooperation
RINL installed 20.6 MW
Waste Heat recovery Project on Sinter Cooler of Sinter Plant-1 with
technological assistance from NEDO under Green Aid Plan. The project is first of
its kind in Indian Steel Industry in Sinter Plants generating electricity. The
project was commissioned and dissemination programme was conducted on 31.7.2014
. The Project generates electricity without burning any fossil fuels and
reduces GHG emissions.
RINL also participating in
Public Private Partnership collaborative meetings between India and Japan
annually as part of Bilateral Offset Credit Mechanism (BOCM). The Japanese
delegation visited RINL on 3rd Mar 2015 and appreciated the efforts
made by RINL towards energy conservation and GHG emission management.
Clean Development Mechanism Projects
RINL
implemented CDM projects as per Kyoto protocol mechanism. Identified 15 Clean
Development Mechanism projects both in expansion and existing units to claim
carbon credits. Host Country approval from Ministry of Environment and forests
is obtained for 13 No of Projects. These CDM projects have been developed within
house efforts. The following projects have been registered with UNFCCC
SL No |
Name of Project |
UNFCCC registration
number |
Expected CERs |
1 |
Power Generation using Waste pressure Energy of BF gas from Gas Expansion Turbine Station of BF-3 of Rashtriya Ispat Nigam Limited |
9613 |
58871 |
2 |
Power Generation from Cooling of coke in Coke Oven Battery#4 of RashtriyaIspat Nigam Limited |
9988 |
70516 |
3 |
Waste Heat recovery from stoves of Blast Furnace-3 |
10024 |
42573* |
* Verification under progress
Renewable Energy
- Installed 5 MW Solar Power Plant. This project was commissioned on 20th Dec'2016.
- Solar Water Heating system of 1500 LPD each in Ukku house and VSGH
- Polycarbonate sheets to use natural lighting
- Solar Energy based traffic signal lights in the Plant
- Solar Energy Lamps under Corporate Social Responsibility to the villages in Paderu who are inaccessible to electricity.
- Solar Energy City at SOS Village
- Purchased Green attributes through purchase of Renewable Energy Certificates (REC).
GHG Emissions Reductions from 5MW Solar Power Plant (tCO2e);
2017-18 |
2018-19 |
2019-20 |
9192 |
9868 |
9603 |
Awards
RINL has been awarded "National Energy Conservation Award-2019"
first prize for the year 2018-19 by Bureau of Energy Efficiency,
Ministry of Power.
|
|
RINL has been awarded "National Energy Leader"
Award for consecutively winning" Excellent Energy Efficient unit award"
for the year 2017,2018 & 2019 at Hyderabad during 20th National
Competition for Excellence in Energy Management-2019. |
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