Used steam turbines - wce.co.th Presentation used steam turbines.pdf · 3 2-Feb-11, ChL Potential...
Transcript of Used steam turbines - wce.co.th Presentation used steam turbines.pdf · 3 2-Feb-11, ChL Potential...
Used steam turbines
Advantages of used turbines
One-stop-service @ WCE
Minimizing risks
Next steps
2-Feb-11, ChL2
Origin of the used turbines
• Europe• Germany
• France
• Italy
• Great Britain
• South Africa
• Middle east
Geographical
• Top brands• Siemens / KKK
• Alstom / ABB
• Mitsubishi
• GE
Brand
• Change of production
• Capacity
• Technology
• Uneconomical operation
• Change of Strategy
• Bankruptcy
Reason for availability
2-Feb-11, ChL3
Potential for used turbine
Need electricity
Back-up or lower costs
Need thermal energy
Steam, hot water
Have residues
EFB, Coconut shells, Sawdust,
etc…
HighHighest
Middle
2-Feb-11, ChL4
Used turbines: Financially advantagous
0
10
20
30
40
50
60
New top brand
New low cost
Used equipment
(as is)
Used equipment refurbished
Co
sts
in M
illio
n B
aht
Installation
Transport
Refurbishment
Equipment
Up to 40% savings!
Example 5 MW condensing steam turbine
2-Feb-11, ChL5
Used turbines: Quickly available
0 10 20 30 40
New equipment
Used equipment
6
6
12
12
18
2
0
4
3
3
Time in month
Project
EIA approval
Delivery time
Refurbishment
Installation
Save 1 year!
Used turbines allow fast track projects, allowing to produce electricity 1 year earlier!
2-Feb-11, ChL6
Used turbine: Quickly available
Calculation of the additional income:
][000'000'108
]/[7.2*][000'8*][000'5
Baht
kWhBahthkWIncome
More if you have disposal costs for the feeding
More if you can use thermal energy (steam / hot water)
Less if you have to pay for the feeding
2-Feb-11, ChL7
New <-> Used equipment
Security
CostsNew top-brand
Turbine
New low-cost Turbine
Used turbine(as is)
Refurbished Used Turbine
Security
(availability and
performance) has
a cost.
Refurbished used
turbine is a good
compromise
between security
and costs.
2-Feb-11, ChL8
New <-> Used equipment
Newequipment
Do you need?
Used equipment
High availability
Low costs
Quick solution
Full guarantee
High return on investment
High net present value (NPV)
2-Feb-11, ChL9
WCE: Your one stop service
Client
WCE /Lohrmann
EquipmentInspection Selection
Refurbish-ment
InstallationConstruction
Requirement / NeedProfessional advice
Your project Your project Your project
2-Feb-11, ChL10
WCE: Network
WCE1. One stop service2. Turn-key plant
(EPC)
Equipment:• Lohrmann• Other
Inspection &
Refurbishment:• Lohrmann• Sulzer, Wood, EGA
T, OEM (Siemens, Alstom,Mitsubishi, etc…)Construction &
Installation:• Supervision by
Lohrmann• Construction, Inst
allation and Commissioning by WCE
Engineering:• Existing plant• Lohrmann• Other Thai or
foreign
2-Feb-11, ChL11
WCE: Partner of Lohrmann
Cooperation agreement
• Lohrmann is the European leader for
used power equipment
• Over 20 years of experience in
relocating power plants
• Over 50 equipments available today• Steam and gas turbines
• Diesel and Gas Generator
• From 300 kW to 240 MW
• Collaboration with WCE on• Equipment inspection, selection and transport
• Refurbishment scope of work
• Installation & Commissioning
2-Feb-11, ChL12
Avoiding risks: Inspections
On site inspection by a specialist
Visual inspection Vibration analyze
Maintenance bookNon destructive testing
2-Feb-11, ChL13
Avoiding risks: Preventive maintenance
Refurbishing the only the combustor cans, the first stage nozzles and blades and the control system reduces the down time by 80%
0
5
10
15
20
25
30
Compressor Blades
Combustor Cans
First Stage Nozzles
First Stage Blades
Controls Bearings Seals Couplings Generator
Contribution of major components to gas turbine down time
2-Feb-11, ChL14
Life expectancy of turbines
Turbines from 1980 (2523) are still competitive and can be operated for 10 more years!
2-Feb-11, ChL15
Next steps
Understand requirements
Propose equipments
Select equipment
Inspect equipment
Decide about refurbishment
Dismount
Refurbish Installation Commissioning
2-Feb-11, ChL16
Applications: Palm oil mill
Boiler
Palm oil mill
Steam turbine
Empty fruit bunchesCondenser
Water
High pressure Steam Low pressure steam extraction
Pressure reducing valve
An extraction condensing turbine is producing electricity and steam at the required pressure level. In case of turbine down time, a pressure
reducing valve provides the steam for the palm oil mill.
2-Feb-11, ChL17
Applications: Palm oil mill
Advantages used turbine Disadvantages used turbine
Triple profit from the shorter delivery time:
• Production of electricity
• Substitution of expensive fuel through free biomass for the steam generation
• Costs for the disposal of the EFP
Lower turbine availability. However, the effect for the palm oil production can be neglected, because of the steam pressure reducing valve.
Reduction of the investment, thatcan be used for core business (palm oil production)
Lower efficiency, resulting in smaller electricity production.
2-Feb-11, ChL18
Applications: Fruit processing industry
Boiler
Fruitprocessing
line
Steam turbine
Processed fruitsCondenser
Water
High pressure Steam Low pressure steam extraction
Pressure reducing valve
An extraction condensing turbine is producing electricity and steam at the required pressure level. In case of turbine down time, a pressure
reducing valve provides the steam for the fruit processing line.
2-Feb-11, ChL19
Applications: Fruit processing industry
Advantages used turbine Disadvantages used turbine
Triple profit from the shorter delivery time:
• Production of electricity
• Substitution of expensive fuel through free biomass for the steam generation
• Costs for the disposal of theprocessed fruit
Lower turbine availability. However, the effect for the fruit processing line can be neglected, because of the steam pressure reducing valve.
Reduction of the investment, thatcan be used for core business (fruit processing)
Lower efficiency, resulting in smaller electricity production.
2-Feb-11, ChL20
Applications: Saw mill
Boiler
Sawmill
Steam turbine
Saw dust / Wood chips
Condenser
Water
High pressure Steam
An condensing turbine is producing electricity using the waste saw dust and wood chips.
2-Feb-11, ChL21
Applications: Saw mill
Advantages used turbine Disadvantages used turbine
Double profit from the shorter delivery time:
• Production of electricity
• Costs for the disposal of the saw dust / wood chips
Lower turbine availability. However, as sawdust and wood chips can be stored easily, availability is not the most important matter.
Reduction of the investment, thatcan be used for core business (palm oil production)
Lower efficiency, resulting in smaller electricity production.
2-Feb-11, ChL22
Applications: Steam demanding industry
A gas turbine is producing electricity and hot waste gases that are used in a downstream steam generator. In order to achieve a high
availability, a steam boiler is installed in parallel to the steam generator.
Industrial process
Gas turbine
Steam generator
Exhaust gas Steam
Steam boiler
2-Feb-11, ChL23
Applications: Steam demanding industry
Why install a gas
turbine?• The overall costs for the steam
generation are lower:• The cogeneration of electricity
generates income (blue) that are
higher than the capital costs
(orange), the maintenance costs
(violet) and the overconsumption
of natural gas (red).
• The gas turbine can be used
as power backup system. LegendPrimary fuel cost Electricity earningCapital costs gas turbine Maintenance costs
2-Feb-11, ChL24
Applications: Steam demanding industry
Advantages used turbine Disadvantages used turbine
The shorter delivery time results in a earlier earning (saving) from the electricity production.
Lower turbine availability. However, it makes anyway sense to install a traditional boiler as back-up. Finally the lower availability has little impact on the profit.
Reduction of the investment, thatcan be used for core business. As the gas turbine is by far the most expensive equipment, a lower price has an important impact on the bottom line of the project.
Lower efficiency, resulting in smaller electricity production.