Cradle to Gate
Identity ID
8bed2df110694bbe853d767584cf991e
Materials
Associated ID
a315bfad-efdf-4b1e-854d-033ef44cff1b
Included activities starts
Included activities ends
Description
Diesel is a fuel oil and can serve as a feedstock for certain petroleum products. This dataset includes key raw and auxiliary materials, energy, air emissions, water discharges, and waste from the production process. Infrastructure such as production equipment and facility construction is not included within the system boundary of the dataset. The life cycle inventory data are derived from literature. The diesel production process involves input of raw materials and, for coal-based diesel, includes processes such as coal gasification, Fischer-Tropsch synthesis, and oil hydrotreatment.
Activity Description
The production activities of this product include input of raw materials, coal gasification, Fischer-Tropsch synthesis, and oil hydroprocessing in coal-based diesel production.
Process Description
Coal-based diesel is primarily derived from medium-temperature coal tar through distillation units. It is a type of fuel oil and can also serve as a feedstock for certain oil products.
Time period
2018
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The coal-based diesel process mainly includes three subprocesses: CG (coal gasification), FTS (Fischer-Tropsch synthesis), and OH (oil hydrocracking). First, raw coal is ground together with water and additives in a mill to form a slurry. Once the required particle size distribution is achieved, the coal slurry from the slurry preparation system is fed into the gasifier together with oxygen from the air separation unit to produce raw synthetic gas. The raw synthetic gas is cooled by direct contact with water and then cleaned in a venturi scrubber and scrubbing tower. Subsequently, the cooled and cleaned synthetic gas is fed into the WGS (water-gas shift) reactor to produce sufficient amounts of H2. The Rectisol (cold methanol wash) process is selected to remove CO2 and H2S from shifted synthetic gas in the AGR (acid gas removal) unit. The cleaned synthetic gas is then fed into a slurry-bed reactor for synthetic oil production. The oil is sent to a hydrocracking reactor to initiate the hydrocracking reaction. The bottom product from the hydrocracking reactor is fractionated in a distillation column to produce diesel and petrol.