Water consumption and transfer during MSW pyrolysis char-vaporized pyrolysis oil reforming process

LEI Kaiyuan; CHEN Dezhen

doi:10.11949/0438-1157.20190663

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Water consumption and transfer during MSW pyrolysis char-vaporized pyrolysis oil reforming process

Energy and environmental engineering | 更新时间：2026-07-24

- Water consumption and transfer during MSW pyrolysis char-vaporized pyrolysis oil reforming process
- CIESC Journal Vol. 70, Issue 12, Pages: 4795-4803(2019)
- 作者机构：
  
  同济大学热能与环境工程研究所，上海 200092
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20190663
  CLC： X 705
- Received：13 June 2019，
  
  Revised：2019-08-18，
  
  Online First：09 June 2020，
  
  Published：05 December 2019
- 稿件说明：
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雷开元, 陈德珍. 生活垃圾热解半焦-热解油重整过程中水分的消耗与转移[J]. 化工学报, 2019, 70(12): 4795-4803

LEI Kaiyuan, CHEN Dezhen. Water consumption and transfer during MSW pyrolysis char-vaporized pyrolysis oil reforming process[J]. CIESC Journal, 2019, 70(12): 4795-4803
雷开元, 陈德珍. 生活垃圾热解半焦-热解油重整过程中水分的消耗与转移[J]. 化工学报, 2019, 70(12): 4795-4803 DOI： 10.11949/0438-1157.20190663.

LEI Kaiyuan, CHEN Dezhen. Water consumption and transfer during MSW pyrolysis char-vaporized pyrolysis oil reforming process[J]. CIESC Journal, 2019, 70(12): 4795-4803 DOI： 10.11949/0438-1157.20190663.

摘要

热解炭原位重整城市固体废物的挥发分是改善热解产物的良好方法。在这个过程中，水蒸气在产品转化中起着重要作用。为了了解水分在重整过程中的作用，本研究中将热解液中的油相和水相分离，然后用D

O代替重整过程中的水相，以跟踪液体、气体和固体之间的氢转移。热解油/焦炭重整过程在600、700和800℃下进行。用GC-MS（气相色谱质谱法）分析重整后液体中的油相；IR-MS（同位素比质谱法）分析重整后液体和固体中的氘浓度。研究发现，在实验温度范围内，水蒸气对焦炭的气化作用非常弱，当D

O/焦炭的比例为2/1时，D

O中2％（质量）的氘在反应后残留在炭中;但水蒸气与热解油的气化反应很强烈，在800℃时，78.68％（质量）的热解液（水油混合物）被气化

且热解油中脂肪烃被大量分解，重整液的油相组分中芳香烃占到96.17%；同时，当D

O/油的比例为2/3时，D

O中59％的氘转移到合成气中。研究结果将为生活垃圾热解处理控制最终产物提供理论指导。

Abstract

The

in situ

reforming of volatiles from municipal solid waste by pyrolytic carbon is a good method for improving pyrolysis products. In this process water vapor plays an important role on product conversion. In order to understand the role of water vapor during the reforming process

oil phase and aqueous phase in the pyrolysis liquid are separated and then D

O was used to replace the aqueous phase to mix with oil so that hydrogen transfer between liquid

gas and solid can be tracked in the reforming process. The vaporized oil/char reforming process was performed at 600℃

700℃ and 800℃

respectively. The oil phase and deuterium concentration in the liquid (oil and aqueous phase together) after reforming were measured with help of GC-MS and I

R-MS(isotope ratio mass spectrometry); at the same time deuterium concentration in the solid phase was also checked. It has been found that char gasification by water vapor at all testing temperature ranges is very weak

at 700℃ 2% of deuterium in D

O was remained in the char when the ratio of D

O/char was 2/1. While oil gasification by water vapor during char-catalytic reforming process is very intense: at 800℃ 78.68% of total oil-water mixture is gasified

and the aliphatic hydrocarbons in the oil are decomposed to a large extent

but the aromatic hydrocarbons are found to account for 96.17% of the oil phase after reforming. Simultaneously 59% of deuterium in D

O was found to transfer into syngas when the ratio of D

O/oil was 2/3. The research results obtained here will provide guide for improving the final products of MSW pyrolysis.

关键词

Keywords

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