|
PROPOSAL ON 2MW GAS TURBINE CO-GENERATION POWER STATION From China
CONTENTS
BRIEF INTRODUCTION
PRINCIPLES OF 2MW GAS TURBINE CO-GENERATION STATION OPERATION
PERFORMANCE PARAMETER
REQUIREMENT FOR QUALITY OF FUEL AND WATER
CONTROL FOR ENVIRONMENTAL PROTECTION
CONTENT OF SUPPLY
TECHNICAL SERVICE
Gas Turbine Generator Track Records
CHAPTER I: BRIEF INTRODUCTION
2MW type gas turbine, one of the series, is the item which is recommended by the state for its energy-saving environmental protection and advanced technology. It can improve the utility of the surplus coke oven gas, oil field gas and exhaust gas of oil refinery, especially suiting for coking industry, petroleum chemistry, oil field and so on.
Through over twenty years��?development, gas turbine sets have operated approaching five hundred thousand hours by now. The power station in shanxi coking factory was awarded the prize the best commercial efficiency.
The comprehensive heat efficiency of gas turbine set is 30 percent higher than that of steam turbine set and the pay back period is 50 percent shorter. The facts have shown that the 2MW gas turbine is a mature, stable, reliable, energy-saving product with evident social and economic beneficial results.
CHAPTER 2: PRINCIPLES OF 2MW GAS TURBINE CO-GENERATION POWER STATION OPERATION
The gas turbine is started by a starting motor. When it reaches the ignition speed, the compressed air is mixed with the fuel gas for combustion within the combustor. The combustion gas with high temperature and high pressure from the gas generator will drive the power turbine to work. When the running speed of the set reaches 42 percent of its rated speed, the starting motor will be automatically disengaged from the set. When the set runs automatically to its balance speed, the electric generator which is driven by power turbine will rotate at the same speed and operate in parallel with network. Fuel supply and output power increase in accordance with a certain law, the rated load of the set is 2000KW. Exhaust flow of gas turbine is 16.6Kg/s with 400 C Degree 0.8-1.2Mpa vapor with the flow of 6.5t/h is produced by the heat recovery boiler, the boiler exhaust temperature is 190 C Degree Heat-electricity co-generation is realized by the packaged set with its comprehensive heat efficiency reaching 70 percent or higher.
CHAPTER 3: PERFORMANCE PARAMETER
Gas Turbine engine (under ISO)
|
Type |
|
|
Gas turbine rotating speed (rpm) |
|
|
Output shaft speed (rpm) |
|
|
Rotating direction of output shaft |
|
|
(rear view) |
|
|
Air flow (Kg/s) |
|
|
Rated output power |
|
|
Maximum output power |
|
|
Heat consumption (MJ/kwh) |
|
|
Overall dimension (mm) |
|
|
Mass (kg) |
Fuels:
Coke-oven gas, light diesel, oil field gas, natural gas and so on .
�� Heat Recovery Boiler (supplying with vapour-gas)
When gas turbine is under the rated working condition
|
Vapour volume (t/h) |
6.5 |
|
Vapour pressure (Mpa) |
0.8-1.2 |
|
Vapour temperature (C Degree) |
169.6 |
�� Generator
|
Rated output voltage (Kv) |
6.3 or 10.5 |
|
Power factor (lag) |
0.8 |
|
Frequency (Hz) |
50 |
|
Output power (Kw) |
2000 |
|
Rated powe r(Kw) |
2500 |
�� Flexible coupling
|
Nominal torque (N.m) |
4000 |
|
Max permitted speed (rpm) |
2000 |
CHAPTER 4: REQUIREMENT FOR QUALITY OF FUEL AND WATER
�� Requirement for fuel (for example coke-oven gas )
When calorific value is 17.9MJ/Nm3 (not less than 15.9MJ/Nm3 )
|
Flow(Nm3 /h ) |
2000 |
|
Temperature(��?) |
25 |
|
Pressure (MPa) |
0.9 |
|
H2S(mg/ Nm3) |
Not exceed 20 |
|
Naphthalene (mg/ Nm3) |
Not exceed 100 |
|
HCN (mg/ Nm3) |
Not exceed 150 |
|
Tar (mg/Nm3) |
Not exceed 6 |
Requirement for the quantity and quality of water
|
Cooling water capacity (t/h) |
28 |
|
oxygen removed water (t/h) |
8 |
|
Cooling water of boiler (t/h) |
1 |
|
|
|
Cooling water is used by circulation, water exhausted amount is 2t/h in practice.
In order to prolong the life of the boiler, the requirement for water quality shall meet the international standard.
CHAPTER 5: CONTROL FOR ENVIRONMENTAL PROTECTION
Noise control
Noise of inlet and exhaust air is disposed by filter silencer in gas turbine unit, Noise meet the international specification.
Vibration control
Isolation measure is adopted in gas turbine unit and compressor to control the vibration.
Discharge control
Fuel is burnt thoroughly , not causing draining pollution; exhaust temperature of boiler is 190��? not causing heat pollution.
CHAPTER 6: CONTENT OF SUPPLY
The set of 2MW gas turbine co-generation power station chiefly consists of the following parts.
�� Gas Turbine section
WJ6G1 light gas turbine engine
Inlet filter of gas turbine.
Inlet spray shell of gas turbine.
Joint-support for both gas turbine and generator.
Exhaust unit of gas turbine.
External lube oil system of gas turbine.
Fuel (liquid or gas fuel ) supply and adjustment system of gas turbine.
Main and auxiliary support of gas turbine.
�� Generator section
Three-phase AC synchro-generator
Ventilation (cooling ) unit of generator
Bearing lube and jack-up unit of generator
Starting system for turbine-generator
Excitation unit.
�� Recovery boiler
Recovery heat exchanger
Vapor and water separator
Heat-water circulating system
Boiler water supply and regulation system
Vapor pipe assembly
Smoke exhaust unit of recovery boiler
�� Switch Unit
High voltage switch cabinet (four to five )
400/230v station distribution cabinet
�� Control System
�� DC control cabinet
�� AC control cabinet
�� Protection system
�� Main control desk
�� Control Desk of Recovery Boiler
�� Connecting Wires and cables use in the Station.
�� Primary Instrument Installing Board.
�� Terminal Box
�� Special Tools
�� Floor Bolt of installation equipment
CHAPTER 7: TECHNICAL SERVICE
�� The supplier will supply the Instructional Manual for the Power station and maintenance manuals for various equipments.
�� If required by the purchaser, the supplier can offer the service of operation of the equipment of the power station.
�� The customer may get help in training the personals in proper operation and maintenance procedures.
�� To provide spares for the usage of one or two years.
�� The warranty period for the equipment of power station is one year from delivery.
�� The supply of spare parts is guaranteed. | 
