Experimental investigation on pyrolysis characteristics of oil sludge in N<sub>2</sub>/CO<sub>2</sub> atmosphere

ZHOU Xiong; LI Wei; BAI Jisong; LIN Shunhong; WANG Chao; Lü Quanwei

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Experimental investigation on pyrolysis characteristics of oil sludge in N₂/CO₂ atmosphere

Thermal Power Generation Vol. 45, Issue 10, Pages: 64-69(2016)

更新时间：2025-09-28

- Experimental investigation on pyrolysis characteristics of oil sludge in N₂/CO₂ atmosphere
- 作者机构：
  
  1. 重庆科技学院机械与动力工程学院
  2. 重庆大唐国际石柱发电有限责任公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： X703
- Published：2016
- 稿件说明：
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ZHOU Xiong, LI Wei, BAI Jisong, et al. Experimental investigation on pyrolysis characteristics of oil sludge in N₂/CO₂ atmosphere[J]. Thermal Power Generation, 2016, 45(10): 64-69.
DOI：

ZHOU Xiong, LI Wei, BAI Jisong, et al. Experimental investigation on pyrolysis characteristics of oil sludge in N₂/CO₂ atmosphere[J]. Thermal Power Generation, 2016, 45(10): 64-69. DOI：

摘要

含油污泥成分复杂、性质变化大、有毒物质含量高

可采用热解技术实现减容无害化处罪。基于热重-红外联用分析仪(TG-FTIR)研究了某含油污泥在N_2/CO_2气氛下的热解特性。结果表明:含油污泥热解过程主要分为低沸点烃类物质(300~500℃)的析出、无机碳酸盐(500~800℃)以及重质油等长链稳定有机大分子(900~1 100℃)的分解3个阶段;利用Coats-Redfern方法

求得含油污泥主要热解阶段的动力学参数

发现高温段的活化能高于中、低温段;N_2/CO_2气氛对中、低温段热解过程影响不大

但是在CO_2气氛下高温段的活化能明显增加;热解产物FTIR分析得出其析出气体主要以CO_2、CO以及CH4等轻质气体为主;在高温段

有大量的甲基化合物析出

且CO_2气氛对其生成有明显的促进作用。

Abstract

The pyrolysis characteristics of oil sludge was investigated using thermogravimetric analysis-Fourier transform infrared spectrometer(TG-FTIR)in N_2/CO_2 atmosphere.It was found that the pyrolysis process could be divided into three main stages

corresponding to the light hydrocarbons devolatilization(300 ℃~500 ℃)

carbonates decomposition(500 ℃~800 ℃)

and stable macromolecular structure of organic matter decomposition(900 ℃~1100 ℃).The Coats-Redfern method was applied to calculate the kinetic parameters of the main stages of oil sludge pyrolysis

and the results show that the activation energy was much higher in the high-temperature stage.The CO_2 atmosphere had no obvious influence on the oil sludge pyrolysis for both low-temperature and middle-temperature stages

but in high-temperature stage

the activation energy in CO_2 atmosphere obviously increased compared to N_2 atmosphere.By FTIR analysis

it was found that the major volatile gases released from oil sludge pyrolysis mainly composed by CO_2

CH_4

and other hydrocarbons.In the high-temperature stage

there was a large amount of methyl release

which was dramatically promoted by CO_2 atmosphere.

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Experimental investigation on pyrolysis characteristics of oil sludge in N2/CO2 atmosphere

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Experimental investigation on pyrolysis characteristics of oil sludge in N₂/CO₂ atmosphere