污泥热解特性探讨
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- 污泥热解特性探讨摘 要
随着能源需求的持续增加，传统的能源都面临着资源枯竭的问题，且利用过程中引起的环境污染问题日益严重。因此，寻找合适的后备能源原料以及提高能源的利用效率显得尤为紧迫。污泥就可以作为极为重要的后备能源之一，而且污泥的产量也随着工业化的进程而日益升高，所以探究污泥的无害化利用，既能减小污泥对环境的污染，也为世界提供了一个解决了能源问题的方法，而污泥热处理方式又是污泥处理的重要方法之一，所以其日渐成为人们研究的重点。
本实验研究了污泥含水率、热解终温以及污泥与松木屑不同配比等因素对污泥热解特性的影响；采用管式炉装置，以“无害化、减量化、资源化”为原则，通过研究污水污泥的热解，研究了各种条件下污泥热解所得的主要气相产物的分布和气体组成。
结果表明，热解温度对热解产物的影响：提高热解温度不断的增高有利于气态产物生成，特别是H2和CO等小分子气体；含水率对产物影响：随着含水率的提高,气相和液相产物产率都有相应程度的升高，而固相产物产率则随之降低。气相中H2产量上升，CO产量下降；生物质对产物影响：原料的挥发分含量是影响热解产物分布的决定性因素，随着生物质（木屑）掺混比的提高，气相和液相产量逐渐上升，固相产物的产量下降。
关键词：污泥 热解 气相产物
ABSTRACT
With the development of economy, the process of industrialization is speeding up, people's living standard is improved, and the output of industrial sludge and sewage sludge is also increasing. Therefore, the problems brought about by the sludge are gradually highlighted. In order to reduce the pollution of sludge to the environment, heat treatment has become the focus of research.
This article from the scientific and practical point of view, with the sewage sludge as the research object, according to the "harmless, reduction, resource-based" principle, according to the characteristics of sludge, pollution and utilization, the device in the tube furnace, the distribution and composition of thermal sludge with different water content obtained from the main product study on influence of pyrolysis characteristic temperature, and the effect of different proportion of biomass pyrolysis of sludge, and then makes a systematic analysis on the formation and mechanism of pyrolysis products.
Draw the following results. The effect of pyrolysis temperature on the pyrolysis temperature is beneficial to improve products: gaseous products, especially H2 and CO and other small molecular gas; water content on the influence of products: with the increase of moisture content, gas and liquid product yield has increased correspondingly, and the solid phase product rate were decreased. H2 rise in the production of the gas phase, CO production decline; influence of biomass on product raw material: volatile content is a key factor influencing the distribution of pyrolysis products, with biomass (sawdust) to improve the mixing ratio of the gas and liquid yield gradually increased, the yield of solid products.
目录
摘 要 I
ABSTRACT II
第一章绪论 1
1.1背景与意义 1
1.2污泥处理方法 2
1.3.污泥热解的研究现状 4
1.3.1 国内现状 4
1.3.2国外现状 5
1.4本文主要研究内容 6
第二章实验部分 6
2.1实验原料 6
2.2 实验装置及仪器 7
2.3 实验步骤 9
2.4 HSC软件模拟 10
第三章 结果与讨论 10
3.1实验数据分析 10
3.1.1温度对热解产物的影响 10
3.1.2 含水率对热解产物的影响 12
3.1.3不同比例生物质对热解产物影响 13
第四章 结论与展望 15
4.1结论 15
4.2展望 16
参考文献 16...
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