论文总字数：25837字

摘 要

城市化进程的加快导致污水的排放量逐渐增长，传统的处理系统不够完善，在污泥的处理过程中造成资源的浪费和环境的污染，我们迫切寻找一种消耗固体废弃物转化为可再生能源的方法。污泥热解技术相比其他处理技术有着不产生二次污染等特点，受到了学者的广泛关注。

本文针对污泥与生物质（麦秆）在不同混合比下共热解与催化热解的过程进行了研究，利用同步分析仪获取数据，采用Coats-Redfern方法求解了共热解与催化热解中的动力学参数，利用所求出的反应的热解特征指数与固体剩余率分析具体阶段，分析了白云石催化剂对于污泥与生物质共热解的影响。

利用同步分析仪对样品进行热解和催化热解，比较白云石催化剂加入前后对于反应中失重率和热解特征指数的影响。实验表明，白云石催化剂加入后，残渣剩余质量减小，热解特性指数增大，催化剂的加入促进了反应的进行与污泥的分解。

将同步分析仪中得到的数据带入机理函数中，进行拟合，从而得到反应中所需的活化能。实验表明，加入白云石催化剂后，明显降低了反应所需的活化能，说明加入白云石催化剂促进了污泥的热解

综上所述，选用白云石作为催化剂，促进的污泥的热解，为城市污泥的资源化和催化剂的选取提供了理论基础。

关键词：催化热解 污泥 生物质 共热解

Analysis of sludge catalytic pyrolysis performance

ABSTRACT

The acceleration of the urbanization process has led to the gradual increase of sewage discharge, the traditional treatment system is not perfect, and it causes waste of resources and environmental pollution in the process of sludge treatment. Compared with other treatment technologies, sludge pyrolysis technology does not produce secondary pollution, and has attracted extensive attention from scholars.

In this paper, the process of co-pyrolysis and catalytic pyrolysis of sludge and biomass (wheat stalk) at different mixing ratios was studied. The data was obtained by a synchronous analyzer, and the co-pyrolysis and catalytic pyrolysis were solved by Coats-Redfern The specific parameters of the kinetic parameters in the reaction were analyzed using the calculated pyrolysis characteristic index and solid residual rate of the reaction, and the effect of the dolomite catalyst on the co-pyrolysis of sludge and biomass was analyzed.

Pyrolysis and catalytic pyrolysis of the samples were performed using a synchronous analyzer, and the TG-DTG curve of the reaction was made to compare the effects of the dolomite catalyst before and after the addition on the weight loss rate and pyrolysis characteristic index. Experiments show that after the addition of dolomite catalyst, the residual mass of the residue decreases and the pyrolysis characteristic index increases. The addition of the catalyst promotes the reaction and the decomposition of sludge.

Bring the data obtained from the synchronous analyzer into the mechanism function and perform fitting to obtain the activation energy required in the reaction. Experiments show that after adding the catalyst, the activation energy required for the reaction is significantly reduced, indicating that the addition of dolomite catalyst promotes the pyrolysis of sludge

In summary, the use of dolomite as a catalyst to promote the pyrolysis of sludge provides a theoretical basis for the recycling of urban sludge and the selection of catalysts.

Key Words: Catalytic；Pyrolysis；Sewage sludge；Biomass Pyrolysis

目录

摘 要 I

ABSTRACT Ⅱ

第一章 绪 论 1

1.1 课题研究背景 1

1.2 污泥特性及处理方法 2

1.2.1污泥特性 2

1.2. 2污泥处理技术 2

1.3 污泥催化热解研究进展 4

1.4 本文的研究内容 6

1.5 本文的研究路线 6

第二章 原料及方法 9

2. 1原料 9

2.2实验仪器 9

2. 3实验步骤及方法 10

2.3.1 工业分析 10

2.3.2 元素分析 10

2. 4 本章小结 10

第三章 污泥与生物质共热解特性研究 11

3.1分析方法 11

3. 2实验结果与分析 11

3. 2. 1 污泥与生物质在不同混合比下共热解 11

3.2.2污泥与生物质在不同比例下催化热解 16

3.3本章小结 18

第四章 污泥与生物质催化热解动力学研究 21

4.1基本方程 21

4.2动力学参数计算 21

4.3实验结果与讨论 22

4.3.1 污泥热解动力学特性 23

4.3.2污泥与生物质共热解动力学参数 26

4.3.3污泥与生物质催化热解动力学参数 27

4.4本章小结 28

第五章 结论与展望 29

5.1结论 29

5.2展望 29

参考文献 31

致谢 35

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