Products obtained from catalytic pyrolysis of oily sludge over ZSM-5 zeolite

LIN Bingcheng; WANG Jun; HUANG Qunxing; CHI Yong

doi:10.11949/j.issn.0438-1157.20171398

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Products obtained from catalytic pyrolysis of oily sludge over ZSM-5 zeolite

更新时间：2025-12-10

- Products obtained from catalytic pyrolysis of oily sludge over ZSM-5 zeolite
- CIESC Journal Issue 6, Pages: 2681-2687(2018)
- 作者机构：
  
  浙江大学热能工程研究所, 能源清洁利用国家重点实验室,浙江,杭州,310027
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20171398
  CLC： E992.3
- Online First：05 June 2018，
  
  Published：05 June 2018
- 稿件说明：
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LIN Bingcheng, WANG Jun, HUANG Qunxing, et al. Products obtained from catalytic pyrolysis of oily sludge over ZSM-5 zeolite[J]. CIESC Journal, 2018, (6): 2681-2687.
DOI：

LIN Bingcheng, WANG Jun, HUANG Qunxing, et al. Products obtained from catalytic pyrolysis of oily sludge over ZSM-5 zeolite[J]. CIESC Journal, 2018, (6): 2681-2687. DOI： 10.11949/j.issn.0438-1157.20171398.

摘要

采用U型固定床管式炉研究了含油污泥在ZSM-5分子筛催化剂上的热解产物特性。发现在450℃下未使用催化剂热解时，GC-MS和GC测得的油泥热解油产物中的主要成分为烷烃和烯烃，芳烃含量较低；气体产物中主要为短链烃类，氢气产量较少。而在ZSM-5分子筛的催化作用下，热解油中芳香烃产量达到88.4%，气体产物中的氢气产量和短链烃类产量均明显增加。研究了400～550℃之间分子筛对含油污泥的催化效果，发现ZSM-5在500℃时催化效果最佳，油相产率达到65.6%，油相中的沥青质和胶质含量较低，芳香烃产量达到90.9%。通过热重和XPS分析发现分子筛上的积炭主要以多环芳烃焦炭的形式存在。

Abstract

Catalytic pyrolysis of oily sludge over ZSM-5 zeolite was carried out in a U type fixed-bed tubular reactor. Gas chromatography-mass spectrometry and gas chromatography were employed to investigate the properties of the pyrolysis oil and gas product

respectively. When pyrolysis was conducted without ZSM-5

the main components in the oil product were alkanes and alkenes

and the gas product was composed of short-chain hydrocarbons with little H2. The addition of ZSM-5 significantly increased the aromatics yield (88.4%) in the oil product. Meanwhile

the content of H2 and short-chain hydrocarbons increased as well. The effects of temperature on the catalytic effects of ZSM-5 were studied under 400-550℃. The results showed that 65.6% of oil can be recovered at 500℃ and the aromatics yield reached up to 90.9%. Moreover

the contents of resins and asphaltenes in the oil products were relatively low at this temperature. It can be deduced that the optimum catalytic temperature with ZSM-5 in this study was 500℃. The coke deposited on the catalyst was detected by thermogravimetric and X-ray photoelectron spectroscopy analysis. It was found that the main type of coke was polyaromatics coke due to the polycondensation reaction over ZSM-5.

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