Cradle to Gate
Identity ID
6597d909-8664-4b82-bdc2-b08d5a513861
Energy
Associated ID
ffe18d20-17e6-44cf-8980-aa6e5fa01e84
Included activities starts
Included activities ends
Description
This dataset represents the average situation of coal-fired combined heat and power heat supply in Heilongjiang, China. The core production process is the combustion of coal in a boiler to generate steam that drives a steam turbine to generate electricity, with a portion of the steam that has already done work being extracted between the intermediate- and low-pressure cylinders, and the heat being transferred to the circulating water through a heat network heat exchanger, producing heat (steam/hot water) that meets the parameter requirements. To reflect the average technical level of the industry, the dataset refers to the typical technical configuration of domestic coal-fired power plants, comprehensively considering the average process combination of unit capacity, boiler type, cooling method and flue gas control technology. The heat-to-power ratio is used to allocate the environmental burdens of the heat and electricity products; the heat-to-power ratio and the coal consumption per unit of heat supply for coal-fired combined heat and power are determined based on official statistical data, the latter being uniformly converted into raw coal quantity. The coal quality parameters of the coal consumed adopt the regional average consumed coal quality data. Information on emission inventory data:
· For the emissions of major pollutants such as CO2, SO2, NOx and particulate matter, a material balance method related to coal quality parameters is adopted.
· The emissions of CH4, N2O, CO and NMVOC are estimated using the default emission factor values recommended by IPCC documents for coal combustion in the energy industry.
· The emission factors for halogens and trace heavy metal elements are taken from the literature.
· All emissions take into account the average removal efficiency of flue gas pollution control technologies of thermal power plants in China.
Activity Description
The system boundary covers the entire stage of operation and maintenance of thermal power plants, including coal combustion, fuel oil ignition and combustion stabilization, water treatment, flue gas denitrification, particulate matter removal, flue gas desulfurization, solid waste production and disposal, etc.
Process Description
The product is heat in MJ, which is the sum of steam and hot water in energy terms. As an important energy product, heat is widely used in industrial production, building heating, domestic hot water supply and other fields in urban heating systems. Its essence is the form of thermal energy, which is transported and distributed through steam or hot water as a medium, and is ultimately measured and traded in terms of energy value.
Time period
2022
2026
Geography
China,Heilongjiang
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
Coal-fired cogeneration refers to a heat preparation method that uses the heat output from coal-fired power generation or recovers the heat generated by coal-fired power generation as a heat source. The core processes include: raw coal is prepared and burned to produce steam. The steam drives the steam turbine to generate electricity while extracting steam from it. The heat energy is transferred to the circulating medium through the heat network heater, and finally heat measured in energy is produced. The flue gas generated by combustion is purified and discharged using technologies such as selective catalytic reduction denitrification and limestone-gypsum wet desulfurization.