Cradle to Gate
Identity ID
a7b0ef20-053a-4058-8543-9c27653a722a
Materials
Associated ID
65b66dee-828d-4200-b225-ea33c8a8ad81
Included activities starts
Included activities ends
Description
The treatment activity ended with the treatment of 1 m3 of converter gas at the gas-fired power plant. The data of this dataset is formed by combining data from multiple sources.
Activity Description
The core process of gas-fired power generation involves converting the gas produced during the metallurgical processes of blast furnaces, coke ovens, and converters into electrical energy. The gas-fired power generation process includes auxiliary material procurement and storage, gas transportation to combustion equipment, combustion of mixed fuels, conversion of thermal energy into mechanical energy and then into electrical energy, as well as treatment of by-products and waste generated during the power generation process.
Process Description
During the converter steelmaking process, carbon in molten iron reacts at high temperatures with oxygen blown into the furnace, generating a mixture of carbon monoxide and a small amount of carbon dioxide. Recovered oxygen-top-blown converter gas contains 60–80% carbon monoxide, 15–20% carbon dioxide, as well as nitrogen, hydrogen, and trace oxygen. The generation rate and composition of converter gas vary during a single refining cycle. Therefore, the gas recovered from multiple converter cycles is typically fed into a gas holder, blended to achieve uniformity, and then supplied to end users. The average heating value is approximately 8,400 kJ/m³.
Time period
2021
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The purified gas is delivered to a gas turbine or gas generator for combustion, producing power to drive the generator for electricity generation. Waste heat from the electricity generation process can be used for heating or other industrial processes, further improving energy efficiency.