In respect to fuel and energy sector, the main direction of increasing energy efficiency is construction of new highly efficient power plants and power grid facilities in place of those that have exhausted their service life, as well as modernization and technical re-equipment of existing power plants.
The basis of the country’s power industry is coal generation. The low cost of coal extracted by open cast mining, as well as huge reserves determine the high importance of coal generation for Kazakhstan’s power industry and the need to develop clean coal technologies.
Fuel for main generating sources of “Samruk-Energy” JSC is coal from the Ekibastuz deposit, the ash content of which reaches 50 % for dry weight.
To ensure efficient and environmentally responsible use of fuel and energy resources, it is planned to conduct research work “Development of the technology of boiler units’ furnace equipment of for combustion of high ash coals of Ekibastuz deposit’ coal seam No.3 and depleted coal /by-products of coal”
In order to conduct this research work, it is planned to create a research laboratory on the territory of PI “Nazarbayev University Research and Innovation System”
The work involves the creation of an experimental installation for burning of high-ash coal. A process model of gas dynamic processes of the FB (fluidized bed) or the CFB (circulating fluidized bed) industrial installation and the technical and economic analysis of construction of the TPP with FBB or CFBB will be developed based on results of the work.
Presumably, the combustion of solid fuel in the fluidized bed will allow complete combustion of fuels, without burning out into the gas space above the fluidized bed and entrainment of significant amounts of heat with unnecessarily superheated flue gases. The work is expected to result in significant reduction of fuel consumption and harmful emissions into the atmosphere compared to conventional coal combustion. It is expected to conduct the work in 2016–2019.
The following projects were completed in 2016:
- The project on construction and replacement of turbine unit No. 3 at Aktobe CHP worth 3.5 bn. tenge was completed in May. Modernization increased the available capacity of CHP from 88 to 118 MW with additional generation of electricity in the amount of up to 240 million kWh per year.
- The reconstruction of the boiler unit of Almaty CHP-2 st. No. 8 completed in September. The project is aimed at covering the expected increase in heat loads, providing the Universiade 2017 facilities with heat and increasing the installed heat capacity to 1,414 Gcal/h, 450 million kWh electricity generation by Almaty CHP-2.
- The modernization of 500 kV outdoor switchgear at Ekibastuz SDPP-1 was completed in November in order to improve reliability by replacing obsolete equipment (switches, transformers, disconnectors).
“Expansion and reconstruction of Ekibastuz SDPP-2 with installation of power unit No. 3”
The project on expansion and reconstruction of Ekibastuz SDPP-2 with installation of power unit No. 3 (the project is included in SPIID and the Industrialization Map) implies an increase in the installed capacity of the plant by 636 MW and production of an additional 4.8 billion kWh of electricity per year.
“Modernization and expansion of capacity of Ekibastuz SDPP-1”
The project of Modernization and Capacity Expansion of Ekibastuz SDPP-1 (the project is included in SPIID and the Industrialization Map) provides for the restoration of units No. 8, No. 2 and No. 1 at Ekibastuz SDPP-1 and, accordingly, an increase in the available capacity of the plant by 1 500 MW. The restoration of Unit No. 8 was completed in 2012. The restoration of Unit No. 2 was completed in 2014.
These projects actually complete the ceiling tariffs program adopted by the Government in 2009 and ensured the creation of the required margin of safety.
The gap between the installed and available capacity has been reduced by more than 64 %, or 1 584 MW over 6 years (from 2,462 to 878 MW). The environmental effect of upgrading the holding company’s generating facilities is expressed in a threefold decrease in ash emissions – from 108 to 36 thousand tons per year.