ANALYSIS AND PERFORMANCE MENSURATION OF PYROLYSIS PRODUCTS FOR OIL SLUDGE

For the deep resource utilization of oily sludge in oilfield,oily sludge pyrolysis was investigated in this paper.Based on benzene adsorptivity and oil content of pyrolysis residue,the conditions of pyrolysis were optimized.Pyrolysis oil and residue were characterized using ICP-MS,Element Analyzer,GC,EPS-MS.Performance of pyrolysis residue was evaluated via a flow gas desulfurization test after subsequent processing.The results of orthogonal experiment showed that the optimum pyrolysis conditions were under nitrogen atmosphere and 600℃,4h,5℃·min-1for the pyrolysis temperature,pyrolysis time and heating rate,respectively.In this case,the maximum benzene adsorbability was 47.04mg·g-1 and the oil content of pyrolysis residue was 0.21%.In the optimum conditions,oil yield of pyrolysis was up to around 11% and recovery was about 75%,quality of pyrolysis oil was high,non-condensable gas generated could be used as clean fuel gas or raw material of the syngas.The sulfur capacity of pyrolysis residue after post processing was above 3% which has better capability of adsorptive desulfurization and potential of improvement.