Cradle to Gate
Identity ID
7b3867fe-e21c-4d7c-958d-3493eb720e9d
Energy
Associated ID
ffe18d20-17e6-44cf-8980-aa6e5fa01e84
Included activities starts
Included activities ends
Description
This dataset represents the average situation of the Jilin region of coal-fired combined heat and power heat supply in China. The core production process is the combustion of coal in a boiler to produce steam that drives a steam turbine to generate electricity, and a portion of the steam that has already done work is extracted between the medium- and low-pressure cylinders, transferring heat to the circulating water through the heating network heat exchanger to produce heat (steam/hot water) meeting the parameter requirements. To reflect the average technological 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 supply ratio is used to allocate the environmental burdens of the heat and electricity products; the heat supply ratio and the coal consumption per unit of heat supplied for coal-fired combined heat and power are determined based on official statistical data, the latter being uniformly converted to raw coal quantity. The coal quality parameters consumed adopt the regional average consumed coal quality data. Information on the 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 sector.
· The emission factors of 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 in Chinese thermal power plants.
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,Jilin
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.