Characteristics and mechanism of catalytic effect of inner minerals on combustion of oil shale coke

GAO He; JIANG Xingyu; LIU Xuejing; YUE Junrong; ZENG Xi; HAN Zhennan; XU Guangwen

doi:10.11949/0438-1157.20200655

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Characteristics and mechanism of catalytic effect of inner minerals on combustion of oil shale coke

Catalysis\, kinetics and reactors | 更新时间：2026-07-24

- Characteristics and mechanism of catalytic effect of inner minerals on combustion of oil shale coke
- CIESC Journal Vol. 71, Issue 12, Pages: 5568-5577(2020)
- 作者机构：
  
  1.沈阳化工大学能源与化工产业技术研究院，资源化工与材料教育部重点实验室，辽宁沈阳 110142
  2.中国科学院过程工程研究所多相复杂系统国家重点实验室，北京 100190
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20200655
  CLC： TQ 028.8
- Received：27 May 2020，
  
  Revised：2020-07-16，
  
  Online First：17 December 2020，
  
  Published：05 December 2020
- 稿件说明：
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高鹤, 姜星宇, 刘雪景, 岳君容, 曾玺, 韩振南, 许光文. 油页岩矿物质催化半焦燃烧特性及机理[J]. 化工学报, 2020, 71(12): 5568-5577

GAO He, JIANG Xingyu, LIU Xuejing, YUE Junrong, ZENG Xi, HAN Zhennan, XU Guangwen. Characteristics and mechanism of catalytic effect of inner minerals on combustion of oil shale coke[J]. CIESC Journal, 2020, 71(12): 5568-5577
高鹤, 姜星宇, 刘雪景, 岳君容, 曾玺, 韩振南, 许光文. 油页岩矿物质催化半焦燃烧特性及机理[J]. 化工学报, 2020, 71(12): 5568-5577 DOI： 10.11949/0438-1157.20200655.

GAO He, JIANG Xingyu, LIU Xuejing, YUE Junrong, ZENG Xi, HAN Zhennan, XU Guangwen. Characteristics and mechanism of catalytic effect of inner minerals on combustion of oil shale coke[J]. CIESC Journal, 2020, 71(12): 5568-5577 DOI： 10.11949/0438-1157.20200655.

摘要

利用微型流化床反应分析仪（MFBRA）研究了油页岩矿物质催化半焦燃烧特性，重点考察了半焦内部矿物质和外部页岩灰床料对半焦燃烧的催化作用，揭示了流化床反应器中半焦燃烧过程和机理。结果表明：内部矿物质和外部床料对半焦燃烧均具有明显催化作用，而两者共同催化效果最为显著。矿物质中CaO和Fe

对半焦燃烧具有催化活性，CaO催化作用强于Fe

。油页岩半焦燃烧反应活化能在60.41~78.97 kJ/mol之间，矿物质的催化作用会明显降低反应活化能。流化床反应器中，矿物质对半焦燃烧的催化作用主要表现在四个反应，即：挥发分裂解和燃烧、半焦表面炭燃烧、半焦内部炭燃烧以及一氧化碳燃烧。

Abstract

The micro fluidized bed reaction analyzer (MFBRA) was used to study the combustion characteristics of oil shale mineral catalytic semi-coke. This study compared the effect of minerals inside char and bed material (oil shale ash) outside char on char combustion

and the process and mechanism of char combustion in the fluidized bed were further revealed. Both of minerals inside char and bed material outside char had a marked catalysis for char combustion and their combined catalysis was most notable. It is found that the CaO and Fe

were the major active components in oil shale minerals for catalytic combustion of char

and the catalysis of CaO was stronger than that of Fe

. The activation energy of char combustion ranged from 60.41 kJ/mol to 78.97 kJ/mol

and it would significantly decrease with presence of the catalysis by minerals in oil shale. For char combustion in a fluidized bed

the contribution of minerals to catalytic combustion was mainly reflected in four reactions

such as volatiles cracking and combustion

surface carbon combustion

internal carbon combustion and CO combustion.

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Keywords

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