污水污泥的處理是全世界急需解決的課題之一,它的排放不僅污染環(huán)境同時(shí)也是資源的浪費(fèi)。熱解是污泥等碳質(zhì)資源提質(zhì)利用的重要方式之一,但是污泥的高含氧量和高含氮量的特點(diǎn)限制了其熱解提質(zhì)。該論文在下墜式管式反應(yīng)器中研究了污泥的催化熱解,旨在降低熱解液體產(chǎn)物中含氮和含氧類有機(jī)化合物(ONSs和OOSs),提高生物油品質(zhì)。實(shí)驗(yàn)選取了三種不同類型的催化劑用于污泥快速熱解揮發(fā)分的催化重整,分別是鈣基催化劑(CBCs:白云石和Ca O)、過渡金屬催化劑(TMCs:Ni/Al₂O₃、褐鐵礦和Co Mo/Al₂O)和通過離子交換-碳化法制備得到的褐煤半焦基催化劑(C₇₀₀)。實(shí)驗(yàn)在500–700 ℃的反應(yīng)溫度下考察了不同催化劑對產(chǎn)物分布的影響,細(xì)致分析了生物油的化學(xué)組成,并進(jìn)步一揭示了該過程中的氮遷移路徑。該論文主要在從以下四個(gè)方面下進(jìn)行了結(jié)果討論:產(chǎn)物分布,氣體收率,焦油組成和氮分布。首先考察的是熱解產(chǎn)物的碳分布,反應(yīng)溫度對產(chǎn)物的碳分布影響較大。在非催化熱解下,當(dāng)溫度從500升高至700 ℃,半焦的碳產(chǎn)率降低,這可能與焦...

【文章頁數(shù)】：100 頁

【學(xué)位級別】：碩士

【文章目錄】：
Acknowledgement
摘要
Abstract
1 Introduction
    1.1 Sewage Sludge Formation, Treatment and Disposal
    1.2 General SS Legislation and Considerations
    1.3 SS as a Biomass Resource
    1.4 Bio-oil and Biochar Characteristics and Utilization
    1.5 Background of the Commercial Catalysts
    1.6 Background and Significance of This Study
    1.7 Objectives of This Study
2 Experiment Segment
    2.1 Raw Materials
    2.2 Instruments/Equipment and Reagents
    2.3 Catalyst Preparation
    2.4 Catalytic Pyrolysis Process of SS
    2.5 Characterization Methods
3 SS Characterization
    3.1 TG/DTG and XPS Analysis of SS
    3.2 FTIR Analysis of SS
    3.3 Chapter Summary
4 Characterizations of Catalysts
    4.1 XRD and BET analysis
    4.2 SEM Analysis
    4.3 Chapter Summary
5 Catalytic Pyrolysis of SS
    5.1 Introduction
    5.2 Product Yields
    5.3 Gas Composition
    5.4 GS/MS Analysis of L-Os
    5.5 Nitrogen Distribution
    5.6 Chapter Summary
6 Conclusion and Recommendations
    6.1 Conclusion
    6.2 Recommendations
References
Appendix
作者簡歷
Thesis Data Collection



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