Optimization of CO2 Emission Calculation During Coke Combustion Process in Petrochemical Industry
Petrochemical industry,as a high energy consumption and high emission industry,contributes one fifth of the total carbon emissions of all industries.Accounting the carbon emissions of the petrochemical industry plays a crucial role in reducing carbon emissions in the entire industrial sector.A comparison across all carbon dioxide emission calculation methods actively used for catalytic unit and reforming unit in the petrochemical industry was performed,the results difference of the comparison show : during the design phase of construction projects,the carbon emission amounts of catalyst mass balance method and device carbon mass balance method are basically consistent,while the calculation results difference of emission factor method are larger;during the operation phase,the error range of carbon emissions calculated by the catalyst mass balance method and flue gas monitoring method is 3%～17%.In addition,it is suggested that in the mature stage of technology,the pilot work of on-line monitoring of CO2 in regenerated flue gas of FCC unit should be carried out,and it should be used as the basis for accounting of its emission.Finally,the paper proposes to establish a"double-spatio-temporal"catalytic coking process CO2 emission accounting system for construction projects and existing enterprises,the CO2 emission of construction projects is used as a reference for pollution and carbon emission reduction control,carbon emission level accounting and benchmarking,and the CO2 emission of existing enterprises is used as a basis for carbon emission quota issuance and carbon market performance.
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