冷凝温度对煤-塑料微波共热解焦油的影响

摘要

研究了低变质煤与塑料混合物在微波场中的热解.采用红外分析和GC-MS法对焦油进行了分析表征,重点阐述了冷凝温度对焦油产率及成分的影响规律.结果表明,随着冷凝温度的降低,焦油产率逐渐增大,煤气产率逐渐降低.当冷凝温度从25℃降低为-10℃时,焦油中烷烃、烯烃和酚类的含量呈现下降的趋势,而芳香烃的含量却呈现明显的上升趋势,其中烷烃、烯烃和酚类物质含量分别降低为12.701％,7.044％和7.923％,芳香烃含量增加到50.572％.焦油中C5～C10的轻质油组分由43.545％降为22.976％,而C11～C18中质油含量由32.730％增加到51.374％,而C19以上的重质油成分变化不是很明显.%The mixture of low metamorphic coal and plastic is studied under the condition of microwave pyrolysis, using infrared analysis and GC-MS to characterize the blue-coal and tar, and the effects of condensing temperature on the tar yield and component are investigated that is focused on. This research shows that with the decrease of the condensing temperature, the tar yield increased gradually, while the gas yield decreased. When the condensing temperature decreased from 25 ℃ to -10℃ , the content of alkane, olefin and phenols showed a downward trend that decreased respectively to 12. 701%, 7. 044% and 7. 923%, while the content of aromatic hydrocarbon increased significantly to 50. 572%. The light components of C5-C10 in the tar decreased from 43. 545% to 22. 976%, while the intermediate components of C11-C18 increased from 32. 730% to 32. 730%, and the heavy components over C19 changed a little.