Presented By:- Mr. M. K. Somani, Superintending Engineer Mr. Pradip Sah, Executive Engineer Ms. Reeta, Assistant Engineer KALISINDH THERMAL POWER PROJECT, RRVUNL, JHALAWAR World Highest NDCT Height of NDCT:- 202 m. Completion Period:- 767 days Completion Date:- 12.04.2012 2X600 MW=1200 MW KaTPP, Jhalawar
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Presented By:-
Mr. M. K. Somani, Superintending Engineer
Mr. Pradip Sah, Executive Engineer
Ms. Reeta, Assistant Engineer
KALISINDH THERMAL POWER PROJECT,
RRVUNL, JHALAWAR
World Highest NDCT
Height of NDCT:- 202 m.
Completion Period:- 767 days
Completion Date:- 12.04.2012
2X600 MW=1200 MW
KaTPP, Jhalawar
2
History of Power Development in RajasthanRajasthan 1949; 19 princely states merged.
Total number of towns and villages electrifiedMax 42.
Installed generating capacity 13.27 MW.
Rajasthan State Electricity Board (RSEB) formed 1st July 1957 and
development of power sector started.
Under new Power Reforms Undertaken by State Government, RSEB was
unbundled into five Power Companies in July 2000.
Rajasthan Rajya Vidyut Utpadan Nigam Limited (RRVUNL) is one of them.
RRVUNL is also managing and operating the following Inter State Projects (ISP)
S.No Power Station Present Capacity
01. Rana Pratap Sagar Hydel PS (4X43 MW) 172 MW
02. Jawahar Sagar Hydel PS (3X33 MW) 99 MW
Total 271 MW
Introduction of RRVUNL
RRVUNL has been entrusted with the job of development of power projects
under state sector, in the state along with operation & maintenance of state owned
power stations.
Present Installed Capacity of RRVUNL is 7277.35 MW and 271 MW (ISP).
Online Energy Monitoring System has been installed for
close monitoring of APC and henceforth reduction in APC.
10
ENERGY MANAGEMENT AT KATPP
Planning, Execution and Implementation of
Energy Conservation Projects
Encourage staff to keep VFDs in operational
condition.
Monitor performance of all HT Equipment to
reduce Auxiliary Power Consumption.
Procurement and Utilization of Energy
Efficient Equipment.
Adherence of predicted parameters of
running Units.
Head-Energy Management
Addl. C. E.
R
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Budget Allotted for Energy Conservation Projects in 2020-21
(Million Rs.):- 24.47.
ENCON PROJECTS FY 2020-21
11
S.
No.
Project Detail Investment
(Rupees)
Verified
Savings
(Rs.)
Verified
energy
savings
(KWh)
Units Fuel Status Pay
back
year
1 Replacement of HPSV
lamps in turbine hall by
efficient induction lamps
1000000 384788 83000 - - Under
progress
2.60
2 Installing natural
ventilators in TG area
22500000 6699020 1445000 - - Under
progress
3.36
3 Insulating steam pipes &
boiler .
146900 1930596 332277 MT 187 Under
progress
0.08
4 Pump coating of raw water
pumps to reduce power
consumption. (1 No)
181000 232798 50226 - - Under
progress
0.78
5 Pump coating of CW water
pumps to reduce power
consumption.
499000 3890097 836580 - - Under
progress
0.13
6 Pump coating of ACW
water pumps to reduce
power consumption.
144000 183546 39600 - - Under
progress
0.78
Total 24470900 13320845 2786683
12
ENCON PROJECTS FY 2019-20
S. No. Project DetailsInvestments
(Rs.)
Savings
Payback
Months(Rs.) KWh
1.
Pump coating of CW
water pumps to
reduce power
consumption.
499000 3890097 836580 1.54
2.Insulating steam
pipes & Boiler2815175 1233265 264933 27.39
Total 3314175 5123362 1101513
13
ENCON PROJECTS FY 2018-19
S. No. Project DetailsInvestments
(Rs.)
SavingsPayback
(Months)(Rs.) KWh
1.
Pump coating of
ACW water pumps
to reduce power
consumption.
144000 183546 39600 9.41
2.
Pump coating of
raw water pumps
(1 No.).
181000 232798 50226 9.33
3.Insulating steam
pipes & Boiler2200000 1274979 251949 20.71
Total 2525000 1691323 341775
14
S. No. Project DetailsInvestments
(Rs.)
Savings
Payback
(Months)(Rs.) KWh
1.Tap changing of Lighting
transformer of Unit # 1 & 20 69540 15000 0
2.
Replacement of
Conventional Tube lights (40
W) of Plant by efficient LED
tube lights (20 W)
190180 406113 87600 5.62
3.Changing 150 W HPSV
Lamps with 90 W LED684160 276157 59568 29.73
4.Changing 150 W HPSV
Lamps with 70 W LED871205 533000 114975 19.61
5.Annual Maintenance of
Units as per requirement0 82734056 17846000 0
Total 1745545 84018866 18123143
ENCON PROJECTS FY 2017-18
15
RENEWABLE ENERGY SOURCES
Renewable Energy Sources are looked after by our State
Entity i.e. Rajasthan Renewable Energy Corporation
(RREC), Jaipur. They take care of all renewable energy
projects in the State.
There is no such specific project under taken by KaTPP,
RRVUNL.
16
PERFORMANCE MONITORING AT KATPP
Daily Meeting
Discussion on Hurdles and further Improvement
in Plant Operation.
Discussion on Daily Defects and their solution.
Discussion on Plant Performance Parameters and
issues related with them.
Review inventory status, purchase of spares, if
required for improvement during maintenance.
Also sought latest status of already placed Purchase
orders.
Discusses to hire consultancy, if requires for
improvement of Plant Performance.
Chaired by Plant Head (Chief Engineer)
Monthly
Meeting Review reports submitted by Cross Functional Task
Force and discuss suggestions for improvement of
different areas of Plant and execution thereof.
17
INNOVATIVE PROJECTS SUMMARY1. Erection of Isolation Gate at PA Fan Discharge Duct (FY 2018-19)
Impact:- Recently in Dec 2019 one PA fan of Unit#1 was under
breakdown for 15 days and with the help of this recently erected gate
Unit run continuously on 60-70% load instead of shutdown the Unit and
the damaged fan was attended in parallel.
2. Refractory Works in Economizer and LTSH Bends (FY 2017-18)
Perforated Plates (size-600X25X6MM) covered by refractory for
protecting bends from erosion due to flue gases.
Impact:- BTL due to erosion of bends from flue gases has been
controlled.
3. Shielding Plates in Heat Recovery Area (FY 2017-18)
Impact:- Erosion of bends from flue gases has been controlled.
18
INNOVATIVE PROJECTS1. Erection of Isolation Gate at PA Fan Discharge Duct FY 2018-19
Problem:-
During running of Unit, If any
one PA Fan goes under
breakdown, It required to be
isolated to attend the problem.
With available discharge
damper it was not possible to
isolate the PA Fan completely.
Due to Passing of air from
discharge damper PA Fan under
breakdown rotates in reverse
direction, due to which
maintenance work was not
possible and also it hurdles
when again PA Fan is required
to be taken in service.
Investment (Rs. In Lakhs):- 23.524
Annual savings (Rs. In Lakhs) :- 5873.76
(Estimated)
Replication Potential :- Can be explored by
other plants also if they are also facing such type of
problems.
19
INNOVATIVE PROJECTS2. Refractory Works in Economizer and LTSH Bends
(FY 2017-18)
Original Perforated Plates After Modification
Eroded Tubes and Bends in Economizer and LTSH Area of Boiler before modification
Perforated PlatesRefractory
20
INNOVATIVE PROJECTS
2. Refractory Works in Economizer and LTSH Bends
(FY 2017-18)
Problem:- Erosion in bends could
cause BTL.
Investment:- Rs. 1.0 Lakhs.
Estimated Annual Saving:- Rs. 5484.371 Lakhs
Replication Potential:- Yes. Can be explored by other plants
also if they are having high BTLs in Economizer and LTSH Bends.
Action Taken:- Covered porous plate
(perforated plate of size-600X25X6MM) in
economizer and LTSH area by refractory.
21
INNOVATIVE PROJECTS3. Shielding Plates in Heat Recovery Area (FY 2017-18)
Project Details
Problem Action Taken
During Annual Shutdown while
carrying out De-metering of
Tubes and Bends in Heat
Recovery Area, It had been
Observed that Tubes and Bends
started eroding due to Impact of
Flue Gasses.
Provided SS (Stainless Steel) shielding
plates on tubes & bends in front Heat
Recovery Area for protecting erosion
of tubes and bends due to flue gases.
This arrangement was not provided by
OEM in original design.
Investment:- Rs. 3.38 Lakhs.
Estimated Annual Saving:- Rs. 3656.25 Lakhs
Replication Potential:- Yes. Can be explored by other plants also.
22
OTHER MODIFICATIONS1. Modification Done in Wet Bottom Ash Hopper (BAH) to avoid damage of
Refractory and Seal Trough
Original Drawing of BAHOEM -M/s Macawber Beekay Pvt. Ltd, Noida.
Modified Drawing of BAH
In consultation with OEM
Problem
Whenever Clinkers fall in Bottom Ash Hopper, It causes damage of refractoryon walls of bottom ash hoppers & seal trough due to explosion occurred bysplashing of water on the refractory of walls.
Impact
Frequent Occurrence of this phenomenon leads disturbance in furnace, whichfurther causes drastic variation in draft making Units unstable and prone totripping.
Sometimes this phenomenon may become cause of accident and human injuryalso.
23
OEM suggestion
Additional strengthening (by MS/SS angles, plates stiffeners & SS anchors
etc)
Result
Refractory of said portion has been carried out in both units but the problem
remains the same.
OTHER MODIFICATIONS1. Modification Done in Wet Bottom Ash Hopper (BAH) to avoid damage of
Refractory and Seal Trough
Result:- Frequent problem of damage of bottom ash
hoppers walls, seal trough, refractory etc. was resolved.
24
Our Observation
Main problem in the existing design
was rectangular portion of Bottom Ash
Hopper. At the time of explosion water
of bottom ash hopper spreads & strikes
on the walls of rectangular portion and
seal trough which resulting damage of
refractory of walls & seal trough of
bottom ash hopper.
Modifications done
The bottle neck portion of
bottom ash hopper was
minimized to provide
path/space (by providing
taper plates) for water
splashing during the falling of
clinkers in bottom ash
hoppers.
OTHER MODIFICATIONS1. Modification Done in Wet Bottom Ash Hopper (BAH) to avoid damage of
Refractory and Seal Trough
2. Water System
Guidelines of pollution control board - Zero liquid
discharge.
Seepage of condenser pit is being transferred to CT
blow down tank through pipe line for further
utilization of water in Fire Fighting / Ash Handling /
Service Water System which were initially drained
in open area.
25
OTHER MODIFICATIONS
26
PROJECTS IMPLEMENTED THROUGH KAIZENSupervisor Level
Investment:- Rs. 2.0 Lakhs
Annual saving :- Rs. 5342.381 Lakhs.(Estimated)
Problem:- BTL observed 6 times in two
Financial Years due to misalignment of tubes and
bends of economizer & LTSH zone.
Action Taken
Implemented at site in year 2019.
Observation
All tubes remained aligned and BTL
also controlled in these zone.
1. Boiler Area
Proposed Solution
Providing U-Clamps upon these tubes
and bends, for preventing tubes and
bends to be misaligned and henceforth
to be eroded due to flue gasses.U- Clamps
27
PROJECTS IMPLEMENTED THROUGH KAIZEN
Annual Saving in APC:-10.78 MU (Rs. 2.97 Crores) and
running operation/maintenance cost of compressors also reduced.
2. Conveying air
compressors
(Saving of APC)
OEM Design
Installed =15 Nos. (11 Nos. working + 4
Nos. Stand By).
Supervisor observation & Suggestion
Daily pattern of loading/unloading hours of
running compressors and suggested to reduce
the nos. of compressors in service. Now only 8
Nos. compressors are running on full load & 7
Nos. compressors on partial load.
Annual Saving
4.91 MU.
Same practice adopted for Instrument & Service Air Compressors
Annual saving :-5.87 MU.
28
PROJECTS IMPLEMENTED THROUGH KAIZEN
Saving of Water: - 91250 Cubic Mtr Annully.
Workmen Level
Pollution Control Board
Guideline
Zero liquid discharge.
Suggestion
Modify existing drainage system
of BTG area.
Action Taken:- Some drainages/trenches have
modified and water transferred to already existing
boiler-ESP drain sump then tube settler for
clarification then finally this water is transferred to
HP/LP suction pit for use of bottom overflow &
bottom De-Ashing of Units.
Result:- Saving in fresh water consumption
besides helping in achieving Zero Liquid Discharge.