發(fā)布時間：2021-08-17 21:29

　　隨著能源需求的不斷增大,石油資源緊缺和全球氣候問題的挑戰(zhàn)迫使人們開發(fā)更先進(jìn)的方法來使用生物質(zhì)資源。微波熱解是一種生產(chǎn)優(yōu)質(zhì)生物炭的先進(jìn)技術(shù),該技術(shù)不僅可以制備高品質(zhì)的產(chǎn)品,更重要的是,熱解過程綠色環(huán)保。在微波場中,熱解所需能量以輻射形式傳播,區(qū)別于傳統(tǒng)由外到內(nèi)的加熱技術(shù),該過程具有快速和均勻加熱的特點(diǎn)。影響微波熱解的因素有很多,包括:反應(yīng)溫度、反應(yīng)時間、微波功率、反應(yīng)物類型和微波吸收劑等。本論文使用兩種殼類生物質(zhì)原料制備生物質(zhì)炭,并對其進(jìn)行表征分析以及用于重金屬吸附研究。實(shí)驗(yàn)以椰殼和核桃殼為原料,在不同溫度（150,180,200,250,300°C）條件下在管式爐中預(yù)處理2小時,然后探究原料在不同微波炭化溫度（400,600,800°C）和微波吸收劑（SiC,AC）條件下所得生物質(zhì)炭的孔隙結(jié)構(gòu)特征,并在600°C、CO₂活化的條件下,進(jìn)一步探究活化時間（30,50,90,120 min）對所得活性炭品質(zhì)的影響。研究結(jié)果表明,炭化溫度的適當(dāng)升高有助于提高生物質(zhì)熱解炭和活性炭的產(chǎn)率并增大其比表面積。在如下條件下獲得的生物炭性能最佳:活化溫度600°C,制備時間60 m... 

【文章來源】：東南大學(xué)江蘇省 211工程院校 985工程院校 教育部直屬院校

【文章頁數(shù)】：62 頁

【學(xué)位級別】：碩士

【文章目錄】：
Abstract
摘要
Chapter 1 INTRODUCTION
    1.1 Introduction
    1.2 Motivation
    1.3 Research Objectives
    1.4 Scope of research
Chapter 2 LITERATURE REVIEW
    2.1 Biomass
        2.1.1 Categories of biomass materials
        2.1.2 Constituents of biomass
            2.1.2.1 Lignin
            2.1.2.2 Cellulose
            2.1.2.3 Hemicellulose
    2.2 Methods of biomass conversion
        2.2.1 Biological process
        2.2.2 Thermo-chemical process
            2.2.2.1 Combustion
            2.2.2.2 Gasification
            2.2.2.3 Liquefaction
            2.2.2.4 Alcoholic fermentation
            2.2.2.5 Pyrolysis
    2.3 Microwave assisted Pyrolysis
        2.3.1.Structure of Microwave Generator
        2.3.2.Magnetron Operation
        2.3.3.Applications of microwaves
        2.3.4.Principles Governing Microwave Pyrolysis
            2.3.4.1.Dielectric properties
            2.3.4.2.Volumetric heating
            2.3.4.3.Selective heating
Chapter 3 MICROWAVE PYROLYSIS OF SHELLS
    3.1 Material
    3.2 Methodology for Experimental System Setup
        3.2.1.Experimental set up
            3.2.1.1 Microwave setup
            3.2.1.2 Furnace
    3.3 Research Methods
        3.3.1 Conditions
        3.3.2 Pretreatment
        3.3.3 Carbonization
    3.4 Result and Discussion
        3.4.1 Analysis of Biomass
        3.4.2 Effect of pyrolysis temperature
        3.4.3 Effect of microwave power on the biochar yield
        3.4.4 Effect of microwave radiation time on biochar yield
        3.4.5 Effect of microwave power on BET
        3.4.6 Effect of residence time on BET surface area
        3.4.7 Effect of microwave absorbent on microwave heating characteristics
        3.4.8 Microwave heating characteristics of different microwave absorbents
Chapter 4 Activation and Utilization of Biochar
    4.1 Introduction
    4.2 Material and Experiment system
        4.2.1 Material
        4.2.2 Activation Experimental System
    4.3 Study on adsorption properties of heavy metal ions
        4.3.1 Absorption System
            4.3.1.1 Static adsorption experiment
            4.3.1.2 Experiment steps
        4.3.2 Adsorption experiment
            4.3.2.1 Adsorption test
            4.3.2.2 Detection process
            4.3.2.3 Data processing
    4.4 Results
        4.4.1 Experimental Data
    4.5 Conclusion
CHAPTER 5 CONCLUSION AND FUTURE WORK
    5.1.Summarize
    5.2.FUTURE WORK
Acknowledgement
Dedication
References
Publication


【參考文獻(xiàn)】：
期刊論文
[1]生物黑炭及其增匯減排與改良土壤意義[J]. 張阿鳳,潘根興,李戀卿.  農(nóng)業(yè)環(huán)境科學(xué)學(xué)報(bào). 2009(12)



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