Research on the Optional Treatment Process for Oily Sludge under the Carbon Peaking and Carbon Neutrality Goals
To optimize the best process for treating oily sludge under the constraints of the"dual carbon"goals,this article evaluates four typical oily sludge treatment processes from the perspectives of comprehensive energy consumption and carbon emission intensity.Utilizing the carbon accounting model provided by the Intergovernmental Panel on Climate Change(IPCC),a carbon emission accounting method tailored for the oily sludge in the petroleum and petrochemical industry is proposed.The comprehensive energy consumption and carbon emissions were calculated for three types of oily sludge:tank bottom sludge,residual sludge from tank cleaning,and air flotation scum.The results indicate that for tank bottom sludge,the combination of thermal washing and thermal desorption or thermal washing and microbial degradation processes results in lower comprehensive energy consumption and carbon emission intensity.For residual sludge from tank cleaning,the thermal washing combined with microbial degradation or thermal desorption processes yields lower energy consumption and carbon emissions.For air flotation scum,the thermal drying combined with incineration or thermal desorption processes shows lower comprehensive energy consumption and carbon emission intensity.