best practices in energy efficiency & energy...
TRANSCRIPT
Wadi Cement Works 30th Aug 2017
Best Practices in Energy Efficiency & Energy Optimization
Presented at :-17th National Award for
Excellence in Energy Management 2017
1
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Plant Overview – Wadi Cement Works
Agenda
2
Renewable Energy sources, utilization of waste for replacing the conventional energy
Energy Efficiency & Benchmarking with Global best SEC
Innovative Projects – Case Studies in EE
Involvement of Employees, Team work in ENCON, Monitoring & Reporting, Implementation
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
ACC Wadi Geographic Location
KARNATAKA
STATE
Plant Site
Clinkering : 4.6 MTPA, Cement - 4 MTPA Power - 125 MW
Wadi-1
Wadi-2
3
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Genesis of the plant...............Wadi Cement Works
1978 1983 1995 2001 2006 2010 2014
1968
1968: Wadi I set up with installed capacity of 0.4 MTPA
Kiln 1 & 2 1978: MFC Installation
1983: Ist 1.0 MTPA
IndigenousPlant in India &
25 MW CPP installed
1995: CPP expanded to 50 MW
Wadi-2 Commissioning
2.0 MTPA
2006 With in house
modification at Wadi II total capacity of Wadi- 4.2 MTPA
WD 2Expansion
clinkering & CPP(50 MW)
Total capacity 6 million Tons &
125 MW CPP
CommissioningAFR platform
(16 TPH)
India’s Ist 1.0MTA Plant
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Plant layout_Wadi-2
L&T make impact bar crusher Crusher 1 – 1000 TPHCrusher2 – 1200 TPH
Raw Mill-1 (Atox 50)Capacity – 450 TPHRaw Mill-2 (Pfeiffer 5600 B)Capacity – 560 TPH
Raw Meal Silo1 Nos. CF SiloCapacity – 21000 T
Complex SLC & ILC Combination of
6 stage PH
ILC Height –182 mSLC Height - 120 m
Kiln : Size – 6 m Dia X 96 m Length,BDP – 12500 TPD, Make –FLS, Inclination – 4%, RPM – 5 max. ,Drive – Twin Drive
RM1 RM2
Coal Mill-1 (Atox KM25)
Capacity – 50 TPH
Coal Mill-2 (Loeshe LM43.4 D)
Capacity – 93 TPH
Cr1 Cr2
SLC
ILC
K4
KM1 KM2
CM (Ball Mill) – 2 Nos.Capacity – 220 TPHx 2Make - FLS
VRPM – 2 Nos.Q –230 TPHMake- AMCL
Clinker SiloQ. – 1.15 LT
Cement SiloCap.- 10000t Tx 3
Packer- 4 Nos.Cap. -180 TPHX 4Double discharge
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Energy Efficiency & Benchmarking with Global best SEC
6
Renewable Energy sources, utilization of waste for replacing the conventional energy
Plant Overview – Wadi Cement Works
Innovative Projects – Case Studies in EE
Involvement of Employees, Team work in ENCON, Monitoring & Reporting, Implementation
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
7
Energy Management System & Energy Policy
ACC Wadi Cement Works is ISO:50001 Certified Organisation
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Green Procurement & Green mission Policy
1. Optimization of natural resources
2. Installation waste heat recovery
system to produce green energy
3. Sustainable reduction in Plant
Energy consumption
4. Reduction in plant water
consumption
5. Cement manufacturing with Zero
harm to Environment
6. Our objective “Manufacturing of
Green Cement”
Way forward: We are in process of
“Green Pro” certification.
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Our Key Priorities....
2. Operational Excellence
3. People capability
4. Reliability base plate
Our Goal : Excellence in Cement Manufacturing
1. Safety & Housekeeping
5. Financial acumen
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Objectives
- Assess our own energy performance
- Comparison with peers, cluster, National best
- Identify gaps and possible solutions
- Formulate the strategies
- Monitor key parameters to maintain and sustain benefits
Optimizing Efficiency Through Energy Benchmarking
Methodology
- Collection of Data from sister works, peers
- Reference of data from CII, BEE etc.
- Identifying the gap in performance.
- Develop Roadmap for bridging the GAP
- Plan the priority actions
- Monitor progress in improving energy efficiency in operational excellence.
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
11
Optimizing Efficiency Through Energy Benchmarking
1.07 1.16
1.6 1.721.5
0.89
0.22
Y'13 Y'14 Y'15 Y'16 GAP Cluster Best
National Best
kWh/
T m
at
Crusher Raw Mill #1
Coal Mill #2Raw Mill #2
- Objective is to identify the gap in performance.
- Develop Roadmap for bridging the GAP
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
12
Optimizing Efficiency Through Energy Benchmarking
Kiln -4 -SEEC Kiln - STEC
Cement Mill #2Cement Mill #1
- Identifying the gap in performance.
- Develop Roadmap for bridging the GAP
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
SEEC - Comparison with Global Best SEC
63.8
kW
h/t
cem
79.4 79.5 78.8282.11
18.3
63.8
Source : LH Reference Value tool
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
STEC - Comparison with Global Best SEC
5 25
kCal/
kg C
linker
Source : CII
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Road map to achieve benchmark/global best SEC
Improving Kiln PRI from 84% to 95% (BDP – 12500 TPD) with 100%Petcoke usage, resulting reduction in SEEC & STEC by ≈ 6- 7 %.
✓ Replaced ILC tertiary air duct damper (in auto mode) to enable
operation at oxidizing kiln conditions to reduce CO and improve clinker quality (C3S) - Implemented Jan 2017
✓ Installation of new Pyro jet burner to increase burner momentum and improve combustion conditions, sulfur volatility and clinker quality - In progress - Sep 2017
✓ Replacement of Beumer pan conveyor with Aumund to improve reliability and productivity of kiln (expected PRI – 100%). In progress – Dec 2017
✓ Replacement of four cooler fans with new fan for reducing clinker temperature. – In progress – Dec 2017
✓ Reduce raw mix fineness to improve Combinability Temperature
✓ PIT navigation system - Intelligent optimisation software for Cement Kiln –
Year 2018
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Road map to achieve benchmark/global best SEC
To increase TSR % from 10% to 20% in Y’2020 by adding another Pre-processing line of having investment of Rs. 70 Cores – In progress
Reduction of avoidable electrical energy loss in GRR by replacing GRR with SPRS in RM#1 fan . Expected benefit – 0.22 kWh/t cem; In-progress - Dec 2017
Reduction in Raw Mill#2 inlet pressure from 230 mmWC to 100 mmWC by carrying out CFD analysis. Expected benefit – 0.21 kWh/t cem
Replacement of inefficient reciprocating low pressure compressed air system 451PQ1M1, 451PQ2M1 & 451PQ3M1for coal conveying with Energy Efficient Trilobe Delta Blower with Online air flow totaliser. Expected benefit – 0.16 kWh/t cem
Replacement of calciner string fan impeller with lower sized impeller in order to improve operating efficiency (Present operating efficiency – 63%) Expected benefit – 0.14 kWh/t cem
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Road map to achieve benchmark/global best SEC
Maximization of fly ash absorption from current level of 32% to 34% resulting reduction in SEEC by ≈ 2.5 %. – Inlet fly ash feeding
arrangement system - in progress – Sep’2017
Improving reliability of pregrinder & cement mills
Replacement of existing three way separator with V separator to enhance cement mill output by 10%. In progress – Sep’2018
Installation of waste heat recovery system (WHRS) to generate power from cooler & Preheater hot air in Line K-4 – Wd-2 –Expected potential ≈ 13.2 MW, Investment INR 140 Cr. – Y 2020
SNCR system for reduction NOx emission for Kiln stack as per MoEF guidelines. – In progress – Dec’2017
Concreting of approach road and dust suppression system for MoEF compliance. In progress
Concreting of truck parking yard to reduce fugitive dust emission
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Investment & SEC Impact
Nos. of ENCON
EE Saving, million KWH
TE Saving, MT coal
Low - Low 9 1.46 754
High - Low 1 0.48 0
Low - High 7 7.11 5253
High - High 4 5.62 4642
ENCON PROJECTS IMPLEMENTED IN LAST 3-YEARS
Investment
SEC I
mpact
27%
35%
38%
Encon Projects (Nos.)
W/O Investment
W/L Investment
Midium Investment
9%
16%
75%
Annual EE Savings, mkWh
W/O Investment
W/L Investment
Midium Investment
Criteria for Investment
3%6%
91%
Annual TE Savings, MT Coal
W/O Investment
W/L Investment
Midium Investment
L L H L
H HHL
Capex : Project Cost below 10 Lac – BTL & above 10Lac - ATL
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
MAJOR ENCON PROJECTS IMPLEMENTED IN LAST 3-YEARS
✓ Improved throughput of coal mill #2 from 52 TPH to 73 TPH during Pet
coke Grinding at 3% residue
✓ Maintained L/S crusher output size, R 75mm in the range of 5-10% in order to improve throughput and SEEC in Raw Mill VRM.
✓ Reduced false air ingress in RM#1, #2 & Coal Mill #2 (Target < 10%).
✓ Improved TSR of 6.34% by enhancing usages of AFR at kiln.
✓ Fuel mix optimization by using 100 % pet coke at Kiln.
✓ Cooler static inlet modification to ABC
✓ VVFD for BFW pump in TG #4, TG #5, TG #2, and CEP; resulting APC reduced from 13.4 % to 12.3%.
✓ CPP SHR has been reduced from 3448 Kcal/kWh in Y 2014-15 to 3374 Kcal/kWh in Year 2016-17
✓ Interlock provided in all bag filter purging system with bag filter fan; resulting reduction in compressed air consumption.
✓ Improved in throughput & reduction of idle running of mines LS crushers by 2-shift operation instead of 3 - shift operation.
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Reduction in SEC Performance in last 3 - Years
In Year 2016-17, both SEC & STEC have been increased from previous years due to;
✓ Low PRI of Kiln; 83.79% in Y’16 from 93% in Y’15 after 100% pet coke firing.
✓ Increased AFR consumption
✓ Low PRI of Kiln due to TA Duct failure in Dec 2016 (Kiln PRI-50%) and Jan 2017 (Kiln PRI-48%)
✓ However, Specific fuel cost reduced by 13% from Y 2014 performance; improved EBIDTA.
✓ Also present TSR achieved around 12% & improved GAV.
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
SEC of Cement Grinding in year 2016-17 has been increased from previous years due to;
✓ Change in product portfolio
✓ More Concrete C+ production instead up OPC;
✓ Less throughput & High grinding SEC during concrete + production
✓ High clinker temperature leads to poor availability of VRPM –Pregrinder.
✓Present C+ product volume around 12 %; improved EBIDTA.
Reduction in SEC Performance in last 3 - Years
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
PAT Cycle Performance
Baseline SEC Target SEC Assessment year Normalized SEC
0.0922
0.0874
0.0829
GtG
SEC (
toe/t
on o
f eq.
Cem
)
Nos. of ECerts: (+) 23426 Nos.
GtG
SEC (
kCal/
kg o
f eq.
Cem
)
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Major Investment for Energy Conservation
# Project Description Amount Rs. Cr. Current Status
1 VVFD Unt for BFW pump of TG#5, TG#4 & TG#2 1.55 Implemented
2 SPEED / RFID project to save HSD of stake holder 1.05 Implemented
3 SPRS for Rawmill #2 Fan 0.95 Implemented
4 Upgradation of CM inlet flyash feeding system 0.70 In progress
5 Replacement of SF Bar Cooler fans 0.82 In progress
6 ILC tertiary air duct damper (in auto mode) to enable operation at oxidizing kiln conditions to reduce CO and improve clinker quality (C3S)
0.80 Implemented
7 New PYROJET Burner 1.5 In progress
8 To increase TSR % from 10% to 20% in Y’2020 by adding another Pre-processing line.
70 In progress
9 Reduction of avoidable electrical energy loss in GRR by replacing GRR with SPRS in RM#1 fan.
0.93 In progress
10 SNCR system
11 Online Condenser cleaning system 0.86 In progress
12 CPP – Zero Liquid discharge project 8.25 In progress
13 PIT navigation system - Intelligent optimisationsoftware for Cement Kiln
2.5 In progress
Total 89.91 cr.(11% of turnover)
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Innovative Projects – Case Studies in EE
Agenda
24
Renewable Energy sources, utilization of waste for replacing the conventional energy
Plant Overview – Wadi Cement Works
Energy Efficiency & Benchmarking with Global best SEC
Involvement of Employees, Team work in ENCON, Monitoring & Reporting, Implementation
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
INNOVATIVE PROJECT -1 With Zero Investment Page 1 of 5
Plant : WD Title of the measure : Reduction in frequent
failure of primary diaphragm of solenoid valve by in-house modification in the design of solenoid valve by OEM
Category B New concept (risks taken/self driven / beyond OEM)
Description of the energy conservation measure:Solenoid valves are used in bag-filter to arrest andsupply of compressed air requirement as per thecommand given to solenoid valve based ondifferential pressure. Problem Faced:✓Frequent failure of Solenoid valve diaphragms(Model MEP114) has been increased drastically inmost of the bag filters which have beencommissioned with Solenoid valves of MEP 114.✓In most of the solenoid valves primary diaphragm(D114) plates are getting damaged.✓Secondary diaphragm (D 16) corners damagedwhich causes air leakages
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
INNOVATIVE PROJECT -1 Page 2 of 5
Identification of problem and root Cause Analysis✓ Diaphragm plates damaged due to designproblem in solenoid valves.✓Solenoid valve top covers are having segmentedgrooves at the centre, frequent on/off operationdiaphragm plates hitting the segmented grooves,resultant of this diaphragm plates are damaged.✓At ambient temperature secondary diaphragm(D16) corners shrinked due to poor rubber qualityresulting into air leakages.
Solution of the identified problem✓ Solenoid valve top plate segmented grooves havebeen remove by machining at our Workshop toavoid the impact between diaphragm plate andsegmented grooves during operation.✓ To avoid the shrinkage of diaphragms, we haveprocured Nitrile - Hyplon polymer rubberdiaphragms.
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Picture/ sketch before modification
(if available)
Picture/ sketch after modification
(if available)
Electrical Energy Conservation Case Study Page 3 of 5
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Electrical Energy Conservation Case Study Page 4 of 5
Execution & Implementation ✓Till date, 162 Nos. Segmented groove solenoid valve top plate with modified topplates have been replaced in phase manner. After replacement, Failure ofdiaphragms in the bag filters has been reduced drastically.
Result & Benefit
✓ Replaced 162 no. Of deformed solenoid valves costing Rs. 4500 each withmodified solenoid valves. Hereby saving of around INR 7,29,000.
✓ Due to frequent failure of diaphragm, compressed air bypasses directly throughthe pulse pipe. This causes sudden drop in receiver pressure due to which we have torun additional compressor to make up this pressure drop.
✓ Many process disturbances occurs due to decrease in compressed air pressure.
✓ Due to frequent failure of diaphragms bag filter doesn’t get sufficient compressedair pressure; which causes increase in pressure drop in the bag filters, resultingincrease in pressure drop leads to huge fugitive emission & power consumption inFan.
✓ Estimated compressed air saved after modification – 255 CFM
✓ Measured SEC of compressed air generation @ 6.5 Kg/cm2(g) – 0.225 KW /CFM
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Monetary and Non Monetary benefits Page 5 of 5
A- Replaced 162 nos deformed solenoid valves costing Rs. 4500 each with modified solenoid valves
Rs. Lac 7.29
B- Electrical Energy
Estimated compressed air saved after modification CFM 255
Measured SEC of compressed air generation @ 6.5 Kg/cm2(g)
kW /CFM 0.225
Electrical Energy Saving per hour kW 57.35
Annual Electrical Energy Saving @ Rs. 4.44/- kWh Rs. Lac 17.82
Impact in SEC kWh/t cl 0.11
Before
After
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
INNOVATIVE PROJECT -2 With Zero Investment Page 1 of 4
Plant : WD` Title of the measure : Reduction in SEC of Coal
Mill – Make LOESCHE – LM 43.4 by optimising during Petcock grinding by in-house modification.
Category B New concept (risks taken/self driven / beyond OEM)
Description of the energy conservation measure:Petcoke is grinding in existing coal VRM tomeet the requirement of 100% petcoke in kilnline–K4 of capacity 12500tpd Problem Faced:✓ Tackle process issues related to separategrinding of coal/petcoke and✓ Improve control of residue and kiln mainburner.✓ High Mill body vibration during petcokegrinding i.e. 25 mm/s✓ Frequent tripping on account of highvibration,✓ Low throughput during petcoke grinding
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
INNOVATIVE PROJECT -2 Page 2 of 4
Solution of the identified problem
✓ Damring height changed from 50 mm to 75 mm
✓ Modification of water spray system from outlet to mill table for bed
stabilization.
✓ Product Fineness maintained at 3% - Residue at 90 µ.
✓ False air arrested
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Picture/ sketch before modification
(if available)
Picture/ sketch after modification
(if available)
Electrical Energy Conservation Case Study Page 3 of 4
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Electrical Energy Conservation Case Study Page 4 of 4
Result & Benefit
✓ After necessary modification & optimisation; presently coal mill is runningwith throughput of 69-70 TPH of Petcoke grnding at Product Finenessmaintained at 3% - Residue at 90 µ and Mill separator at 960 RPM.
✓ Present Mill body vibration is around 5-6mm/sec.
✓ SEC kWh/t mat has been reduced from 50.46 in YTD’2016 to 40.98 inYTD’2017; resulting a reduction in SEC of 9.48 kWh/t mat.
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
INNOVATIVE PROJECT -3 Page 1 of 4
Plant : WD` Title of the measure :
To produce the clinker with 100 % pet coke by replacing traditional fuel to reduce the clinkering cost.
Category A Known concept with Unique Application
Description of the energy conservation measure:
Fuel mix optimization to reduce Thermal energy cost. Present kiln line –K4 at ACC Wadi has a clinker production capacity of 12,500 TPD & is one of the biggest kiln in the world.
Problem Faced:
✓ Due to non / less availability of linkage coal, high cost E-auction coal;leads to increase in product cost.
✓ Grinding of Pet coke in Coal Mill was challenging due to high vibration.
✓ Low alkali sulphur ratio in clinker leads to heavy coating formation in kilnraiser duct.
✓ High dust formation in clinker leads to flushing in pan conveyor.
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Problem Analysis and action taken Page 2 of 4
Problem Action taken
1. High vibration in Coal Mill.
1.Increase the damring height2. Water spray started on table.3. Installation of GRR for main drive to reduce the speed of the mill.
2. Formation of coating in raiser duct.
1.Stared using high alkali content material in raw meal corrective to maintain A/S in clinker.2.Installation of Cardox socket in kiln raiser duct to dislodge the coating.3.Cyclone / Raiser duct air blaster sequencechanged to auto mode.
3. Low burner momentum.
1. Increase the Primary air fan RPM.
4. Flushing of clinker in pan conveyor tunnel due to fine clinker.
1. Increased alumina ratio for better nodulization.2. Cooler operation mode changed from random
to shuttle.
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Picture/ sketch before modification
(if available)
Picture/ sketch after modification
(if available)
PRODUCTIVITY IMPROVEMENT POTENTIAL Page 3 of 4
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
TANGIBLE IMPACT OF THE PROJECT Page 4 of 4
EASE OF IMPLEMENTATION✓High sulphur Pet coke can also be used in clinkerization.✓Plant can also run in stable with less than 0.8 A/S ratio.✓Pet coke being hard to grind, the desired fineness could be achieved by in house modification of coal mill 2.✓Frequency of hot meal sampling increased for close monitoring of the changes occurring in the system.✓Frequent coating formation in kiln inlet and raiser duct eliminated by installation of air blasters.✓Manual cleaning of coating in kiln inlet and raiser duct reduced due to installation of air blaster.
TANGIBLE IMPACT OF PROJECT 2015 2016
Clinker Production,MT 3756626 3401814
STEC,MJ/T Cl 2916 2966
Petcoke Usage,% 26 82
Fuel Cost,Rs./T Cl 761 574
Savings Rs.crores 19.55
Result & Benefit
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Involvement of Employees, Team work in ENCON, Monitoring & Reporting, Implementation
Agenda
38
GHG Inventorisation, Renewable Energy sources, utilization of waste as fuel & Env
Plant Overview – Wadi Cement Works
Energy Efficiency & Benchmarking with Global best SEC
Innovative Projects – Case Studies in EE
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Involvement of Employees, Team work in ENCON, ….
✓To achieve our objective of manufacturing of Green Cement we have formed various cross functional team to improve the performance by enhancing energy Efficiency & minimum harm to environment✓Identifying the gap in performance and develop Roadmap for bridging the GAP✓Monitoring progress in weekly review meeting along with functional manager chaired by unit head for improving operational excellence
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Involvement of Employees, Team work in ENCON, ….
40
Improvement Projects- Based on Systematic Project methodology
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Involvement of Employees, Team work ….
41
Project methodology1. Problem Identification 2. Observation3. Analysis 4. Action 5. Check (Saving
validation by Plant FICO
6. Standardization7. Conclusion
Basic problem solving tools1. Check Sheet2. Stratification/ Classification3. Pareto Diagram4. Cause & Effect Diagram
4a. Brain Storming4b. Cause & Effect Analysis4c.Cause Analysis Table4d. Why-Why Analysis
5. Histogram6. Scatter Plot & Correlation7. Graphs & Control Charts
S.No Section Wadi
1) Quarry/Mines 22) Production 13) Electrical Energy 64) Quality 15) Maintenance 6) CPP 37) WHRS8) Geocycle9) Packing Plant 2
10) Plant logistics/GIGO Total Projects 15
Project of Year 2017
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Online monitoring of electrical energy – EMS
- Help to identify the gap in achieved performance vs Target.
- Discussed in daily L-1, L-2 level & MIS meeting for bridging the GAP
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
GHG Inventorisation, Renewable Energy sources, utilization of waste for replacing the conventional energy
Agenda
43
Involvement of Employees, Team work in ENCON, Monitoring & Reporting, Implementation
Plant Overview – Wadi Cement Works
Energy Efficiency & Benchmarking with Global best SEC
Innovative Projects – Case Studies in EE
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Utilisation of waste for replacing the conventional energy
Pre-processing: Capacity- 200 M3/Hr
Co-processing: Capacity- 150M3/Hr
Consists of Metso M&J 4000 S
hook shredder, REMA belt
conveyors, Steinert Magnetic
Separator & Eco-star screen.
Suitable for material with bulk
density= 0.1 to 0.6 t/m3
Suitable for material having
moisture range= 0 to 70 %
Facility to handle both HZ & NHz
Waste
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
AFR Performance
Plan to increase TSR % from 12% to 20% by the year 2020 by adding another Pre-processing line of having investment of Rs. 70 Cores – In progress
Utilisation of waste for replacing the conventional energy
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Facility to handle both HZ & NHz Waste
46
Sl No. Waste1 ETP SLUDGE & TOOTH PASTE WASTE
2 OILY RAGS3 N BUTANOL
4 PAINT SLUDGE5 GRINDING MUCK
6 OIL SLUDGE FORM OF ETP7 OIL SOKED COTTON WASTE8 PAINT POWDER
9 PHOSPHATE SLUDGE10 FRP waste/REGIN & GLUE
11 GRINDING MUCK12 CHEMICAL SLUDGE FROM ETP13 INCERATION ASH
14 CONTAMINATED FILTERS/LINER15 GREEN MESH WITH RESIN
16 PAINT SLUDGE17 CHEMICAL SLUDGE18 PHOSPHATE SLUDGE
Sl No. Waste1 BOILER ASH2 BRAKE SHOE LINER GRINDING DUST3 PLASTIC WASTE4 ETP BIO SOLID5 SPENT CARBON6 TRADE REJECTS7 COMPOSITE PAPER8 PLASTIC WASTE9 EPOXY POWDER
10 REGID FOAM SCRAP11 TRADE REJECT12 REJECTED TOYS13 CARBON BLACK14 TYRE CHIPS15 GRP WASTE16 GRP POWDER17 MIXED WASTE18 FOOTWEAR SCRAP & FOAM WASTE
Hazardous AF Non - Hazardous AF
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
GHG Inventorisation
47
Scope -1 : Emissions from Kiln fuel, CPP fuel, Own vehicle fuel consumption, Calcination, fuel for drying if any
Scope -2 : Emissions from Grid electricity consumptionSpecific GHG (KG CO2/T cem) increased in the year 2015 due to higher clinker production
✓Various Energy Efficiency measures taken for reduction of SEEC & STEC, resulting reduced GHG Emission
✓ Increased in TSR from 4.16% in 2015 to present 12 %.
✓ CPP SHR has been reduced from 3448 Kcal/kWh in Y 2014-15 to 3374 Kcal/kWh in Year 2016-17
✓ CPP, APC has been reduced from 13.4 % to 12.3% due to various energy efficiency measures taken like VVFDs in BFW, ACWP, CEP, SA fan in STGs .
✓ Way forward - Potential to be tapped for additional reduction in GHG Emission by WHRS – 13.2 MW & Improve TSR up to 20% - Project in progress
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
SD 2030 action Plan for Water :-“Target for Water Y 2020 – 32% reduction in specific fresh water withdrawal vs 2015”
Key Initiatives
▪ Conservation of Rain water at mines pitsof capacity 40 Lakh m3 used to run theplant.
▪ “RO” Plant for drinking water at plant &colony
▪ Monitoring of water consumption on dailybasis.
▪ Zero water discharge from plant.
▪ 100% utilization of CPP cooling towerand DM plant blow down water, Boilerblow down, RO discharge, Sand filterback wash water etc. “ZLD concept”. –In progress
48
Initiative - Water ManagementLits/
t cem
Specific Water consumption
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Renewable Energy sources & Compliance of RPO
49
Solar Delineators @ all curve ant intersection
Solar Powered Zebra crossing with flasher & buzzer Solar Street Lights installed at Plant & various location
No
s. o
f R
EC
p
rocu
red
- Particulars Units Y'2013-14 Y'2014-15 Y'2015-16 Y'2016-17 Total
REC's Liability (Non-Solar) Nos. 20782 21938 23010 23775 111221
REC's Liability (Solar) Nos. 0 0 0 3242 3242
REC's Purchased (Non- solar) Nos. 20615 21932 23083 23744 111221REC's Purchased (Solar) Nos. 0 0 0 1542 1542Purchase of solar power equv to 1700 1700Short / Excess Purchased (Non-Solar) Nos. -167 -6 73 -31 0Short / Excess Purchased (Solar) Nos. 0 0 0 0 0
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt. 50
Environmental ProjectsE
nv
iro
nm
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s ▪ Continuous Emission monitoring system for ILC & SLC string has beeninstalled for online monitoring of flue gases and reporting to SPCB/CPCB.
▪ Online ambient Air Quality monitoring Station has been installed formonitoring the quality of ambient air.
▪ ROC-F9 & L-8 Drill Machine with dust collector is using at mines for reducing the fugitive emission during drilling.
▪ Nonel technology is being used for ground vibration monitoring analysis and redesigning of Blasting pattern.
▪ Eco- friendly Electric Shovel is being used for dumper loading inside the mines.
▪ TSR (Thermal substitution rate) has been increased up to 12% by commissioning Pre & Co-processing platform (PCPF).
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Mr. Piyuesh Goyal, Hon’ble Minister of State (Independent Charge) forMines, Power, Coal & New Renewable Energy GOI awarded the trophy toDr. S B Singh, Cluster Head South, ACC Limited
FIMI – Health & Safety Award
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Wadi Cement works bagged the FIMI – Health & Safety Award Y15-16
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
16th National Award for Excellence inEnergy Management as “Energy Efficient
Unit” by CII in year 2015
17th National Award for Excellence inEnergy Management as “Energy Efficient
Unit” by CII in year 2016
National Award for Excellence in Energy Management by CII
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Awards & Accolades
Green Manufacturing Excellence Gold Award - 2012
National Award for Excellence in Energy Management- 2011
India Manufacturing Excellence Gold Award - 2012
Green Manufacturing Excellence Award- 2014
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
▪ National Award for outstanding performance in promoting rural and agriculturaldevelopment – by ASSOCHAM
▪ Indira Priyadarshini Vrikshamitra Award - by The Ministry of Environment andForests for "extraordinary work" carried out in the area of afforestation
▪ FICCI Award - for innovative measures for control of pollution, waste management& conservation of mineral resources in mines and plant
▪ Subh Karan Sarawagi Environment Award - by The Federation of Indian MineralIndustries for environment protection measures
▪ Drona Trophy - By Indian Bureau Of Mines for extra ordinary efforts in protectionof Environment and mineral conservation in the large mechanized mines sector
▪ Indo German Greentech Environment Excellence Award
▪ Golden Peacock Environment Management Special Award - for outstandingefforts in Environment Management in the large manufacturing sector
▪ Indira Gandhi Memorial National Award - for excellent performance inprevention of pollution and ecological development
Awards And Accolades
ACC Limited, Wadi Cement Works 18th National Award for Energy Excellence in Energy Mgt.
Thank You
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