含富氮挥发物薄片污泥热解特性及高升温速率反应动力学

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中图分类号：X705 文献标志码：A DOI：10.3969/j.issn.1003-9015.2025.04.019

Abstract：The upgrading process of functional biomass residues is accompanied by the generation of alarge amount ofharmful sheets sludge，posing potential hazards to the environment and human health.Pyrolysis isa critical method for the harmless treatmentand resource recovery of shets sludge.However，sheets sludge exhibits different pyrolysis characteristics compared to municipal sludge due to its smaller molecular weight and higher content of nitro and amino structures in the volatiles. At a heating rate of 100-500‰ ，the pyrolysis reaction kinetics model of sheetssludge transitions fromathird-order reaction （F3）toathree-dimensional difusionreaction（D3），indicating that at high heating rates，the pyrolysis processislimited byheatand masstransfer.Sheets sludge exhibits higher volatile content，with a syngasyield of 205.60mL⋅g-1 at 650‰ ，significantlyhigher than thatof municipal sludge，wherein H2 and CO proportions exceed municipal sludge by 28% and 25% ，respectively，indicating higher syngas quality. At 350‰ ，sheets sludge tar contained around 2O% nitrogen-containing aromatics，four times higher thanreported inmunicipal sludge.As the temperature increased，nitrile，amine，andamide molecules decreased in tar，while pyridine，pyrrole，and indole became the main nitrogen-containing aromatics，accounting for 79.20% ～ 95.83% . In conclusion，the syngas from sheets sludge pyrolysis demonstrate higher quality，and the tar holds the potential to become a nitrogen-rich chemical material.

Key words：sheets sludge；kinetics；pyrolysis tar；nitrogen-containing aromatics；pyrolysis char

1前言

功能性生物质高值化产业（如烟草、药材等）作为中国经济的重要支柱，在我国拥有庞大的生产和加工规模。（剩余14391字）