Construction of a 120 MW CCGT unit in Omsk. First, second stages 65 MW

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Construction of a 120 MW CCGT unit in Omsk. First, second stages 65 MW

120 MW

Location of the object: Russian Federation, Omsk Region, Omsk, Gubkina Avenue, 13, the territory of PJSC "Omsk Kauchuk".

Customer: JSC "group of companies" Titan ", Omsk, st. Gubkin, 22.

Design stages:

  • basic design
  • detailed design within the boundaries of the construction site and the power delivery system (PTS)

Technical and economic indicators of the project

 

The name of indicators

Units

    The value,

      indicator

  1.  Installed electric power of the first, second stages of construction, including:

MW

65

   – steam turbine power unit (1st stage)

MW

25

   – power unit gas turbine installation-recycling boiler

MW

40

  2.  Annual electricity supply

 million kWh

 437,63

  3.  Annual supply of thermal energy (total for all pressures from 1.0 MPa to 3.9 MPa and hot water)

thousand Gcal

1620,99

  4.  Annual generation of electric and thermal energy (in the form of steam and hot water for the production needs of Omsk Rubber Software) to ensure the issuance of energy in accordance with the schedules of the final customer, including:

 

 

    - annual electricity generation

million kWh

501,50

    - annual thermal energy production (total for all pressures from 1.0 MPa to 3.9 MPa and hot water)

thousand Gcal/year

2093,16

         -- including a pair of all pressures from 1.0 MPa to 3.9 MPa and hot water)

thousand Gcal/year

1713,90

         -- including hot water

thousand Gcal/year

379,25

  5.  Own needs of the object taking into account losses on thermal energy in the form of steam

%

26,98

  6.  Own needs of the object for thermal energy in the form of hot water

%

2,56

  7.  Electricity consumption for own needs of the object 

%

12,73

  8.  CCGT operating mode

 

Round the clock

  9.  Working hours per year:

 

 

     - planned use of the object taking into account emergency and repair stops of the equipment, not less

hours

8400,00

     - use of the installed electric power of the object (to ensure the issuance of energy in accordance with the schedules of the final Customer)

 

hours

7715,00

  10.  Annual consumption of natural gas, including:

thousand nm3

thousand tons of fuel equivalent

279697
 

332,48

  11.  Total headcount (for the first and second stages of construction)

number of persons

86

  12.  Duration of construction

months

37

  13. The area of the used land allotment

ha

4,68

  14.  Building factor (for the first and second stages of construction)

%

24

  15. Specific consumption of equivalent fuel for heat energy supply

kg of standard fuel/Gcal

166,47

  16. Specific consumption of equivalent fuel for electricity supply

kg of standard fuel/kWh

143,13

 

Brief description of main solutions

The construction of the facility is envisaged in two stages of construction:

  1. the first stage - a steam turbine power unit with a nominal electrical power of 25 MW and an installed steam capacity of 160 t / h;
  2. the second stage - a gas turbine power unit with an electric capacity of up to 40 MW, with a steam capacity of 150 t / h.

At the first stage of construction, the main equipment includes:

  • Steam turbine - type PT-25 / 30-3.6 / 1.0 / 0.12. Rated electric power - 25 MW. The nominal parameters of live steam are: pressure - 3.6 MPa, temperature - 435 ° C. Nominal pressure in regulated withdrawals: production - 1.0 MPa, heating - 0.12 MPa. The nominal flow rate of live steam to the turbine is up to 160 t / h, the maximum steam consumption to the production extraction is 90 t / h, the maximum steam consumption to the heating extraction is 88 t / h.
  • Steam power boiler of type E-160-4.0-440 GM with a steam capacity of 160 t / h of steam with a pressure of 3.9 MPa (g), a temperature of 440 ° C.

At the second stage of construction, the main equipment includes:

  • Gas turbine unit with rated electrical power up to 40 MW (at ISO conditions), type SGT-750.
  • Steam power boiler of type E-150-4.0-440 G, operating according to the waste scheme with the utilization of exhaust gases from the gas turbine unit with the following characteristics: steam capacity 150 t / h, steam nominal parameters - pressure 3.9 MPa (g), temperature 440 ° C. Steam generation in a power boiler is provided by:

- only utilization of exhaust gases from gas turbines (utilization mode);

- utilization of exhaust gases from gas turbines with afterburning of fuel (warranty mode);

- only by burning fuel (autonomous mode).

The main fuel is natural gas.

The emergency fuel is diesel.

The main technical characteristics of GTUs of the SGT-750 type are shown in the table below.

 

Name

Value

Number of shafts

Two

Generator starting system

Electric motor controlled by a static frequency converter

Number of air compressor stages

13 stages, 3 transonic stages, the first 2 stages with adjustable inlet guide vanes

Compressor compression ratio

23.1:1 (under ISO conditions and natural gas)

Turbine exhaust gas flow

110.8 kg/s (under ISO conditions and natural gas)

Temperature of the gas-air mixture at the turbine inlet

1144°C

Compressor rated speed

9000 rpm (at ISO conditions and turbine running on natural gas)

Gas turbine rated speed

6100 rpm (at ISO conditions and turbine running on natural gas)

Generator rated speed

1500 rpm (due to the reducer 6100/1500 rpm)

Type of combustion system

Multi-hull, eight tubular combustion chambers, low toxicity, emission control without gas injection when running on gas, with water injection when running on liquid fuel, 4th generation

Number of burners

8

Type of burners

Dual fuels

 

Steam boiler type E-150-4.0-440 G is designed to produce low pressure steam.

Steam generation can be carried out by:

  • recovery of heat from exhaust gases after the gas turbine. In this case, 50% of the exhaust gases are fed into the furnace through the burners, the remaining 50% - into the upper part of the boiler downpipe;
  • burning natural gas in a boiler as the main fuel or diesel fuel as an emergency fuel. In this case, natural gas or diesel fuel is burned in gas burners, and combustion air is supplied by two blowing fans.

In accordance with the Customer's Terms of Reference, the following structures and equipment are not envisaged for the 120 MW CCGT unit in Omsk of the first and second stages of construction (power 65 MW):

  • water treatment plant;
  • equipment for carrying out pre-start and operational chemical washings of boilers (the necessary equipment should be provided when developing the documentation of the commissioning organization);
  • equipment and structures for storage and purification of turbine oil.

Implementation of the project

Auxiliary buildings and structures are designed to the extent necessary for the functioning of facilities of the 1st and 2nd stages of construction.

The total construction period (for the first and second stages) established by the Customer is 2023.