Pyrolysis characteristic of deep dewatered sludge

ZHANG Qiang; LIU Huan; LIU Peng; HU Hongyun; LUO Guangqian; YAO Hong

doi:10.3969/j.issn.0438-1157.2014.04.033

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Pyrolysis characteristic of deep dewatered sludge

更新时间：2025-12-10

- Pyrolysis characteristic of deep dewatered sludge
- CIESC Journal Issue 4, Pages: 1396-1402(2014)
- 作者机构：
  
  华中科技大学煤燃烧国家重点实验室,湖北,武汉,430074
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2014.04.033
  CLC： 705
- Online First：30 September 2013，
  
  Published：30 September 2013
- 稿件说明：
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ZHANG Qiang, LIU Huan, LIU Peng, et al. Pyrolysis characteristic of deep dewatered sludge[J]. CIESC Journal, 2014, (4): 1396-1402.
DOI：

ZHANG Qiang, LIU Huan, LIU Peng, et al. Pyrolysis characteristic of deep dewatered sludge[J]. CIESC Journal, 2014, (4): 1396-1402. DOI： 10.3969/j.issn.0438-1157.2014.04.033.

摘要

采用Fenton试剂（Fe2++H2O2）、CaO和煤调理污泥，然后进行深度脱水。用Plackett-Burman（P-B）进行实验设计，研究了这4种调理物质与温度、通气速率和水分共7个因子对污泥热解的影响权重。结果表明，除H2O2外，其余6个因子对污泥热解均有影响。其中温度影响最大，高温有利于热解可燃气体生成。而通气速率越快，热解产气越少。此外，CaO、煤和水的单独影响实验证明3种因子的存在都有利于CO和H2的生成，且CaO和煤作为调理剂时增强效果好于其与污泥物理混合。污泥内残留水也优于外加水，但水分受温度的影响较大。由此可见，深度脱水湿污泥热解在制可燃气体方面具有一定的优势。

Abstract

Sludge was conditioned with Fenton's reagent(Fe2++H2O2)

CaO and coal

followed by deep dewatering. Seven factors

including four conditioner components

temperatures

flow rate and moisture

were studied by using Plackett-Burman(P-B) experimental scheme method. The results show that six factors had influences on sludge pyrolysis except for H2O2. Among them

temperature exerted the most significant effects. High temperature was favorable for combustible gas generation while fast flow rate decreased the gas yield. In addition

CO and H2 production could be improved by the presence of CaO

coal and moisture. Conditioner CaO and coal promoted the combustible gases generation from sludge

which was more efficient than physical mixture of sludge and CaO or coal. For generation of combustible gas the internal residual moisture in sludge was more effective than free water

which was significantly influenced by temperature. In conclusion

deep dewatered sludge pyrolysis has some advantages for generation of combustible gas.

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