Design of a tar catalytic cracker based on hot syngas clean-up tests

IF 3.7 3区工程技术 Q2 ENGINEERING, CHEMICAL

Chemical Engineering Research & Design Pub Date : 2025-03-27 DOI:10.1016/j.cherd.2025.03.022

Vincenzo Arconati , Carmine Boccia , Filomena Ardolino , Giovanna Ruoppolo , Umberto Arena , Francesco Parrillo

{"title":"Design of a tar catalytic cracker based on hot syngas clean-up tests","authors":"Vincenzo Arconati , Carmine Boccia , Filomena Ardolino , Giovanna Ruoppolo , Umberto Arena , Francesco Parrillo","doi":"10.1016/j.cherd.2025.03.022","DOIUrl":null,"url":null,"abstract":"<div><div>Catalytic tar cracking is a promising technique for hot syngas cleaning section in gasification plants since it can remove tars without losing their chemical energy, thereby increasing syngas heating value. Anyway, concerns associated with catalyst selection and preparation and those related to the deactivation phenomenon induced by coke deposition on the active sites still hinder the technical feasibility and economic viability of the process. This study investigates the role of the main operating conditions in the cracking of naphthalene (used as a tar model compound) by means of tests carried out with an iron-supported catalyst (Fe/γ-Al<sub>2</sub>O<sub>3</sub>), under different values of gas residence times (0.055 s, 0.11 s, 0.165 s and 0.22 s), steam concentrations (0 % and 7.5 %), and reactor temperature (750 °C and 800 °C). The results were used to implement a diffusivity analysis and a kinetic study that drove the design of a tar cracking fixed bed reactor to be used in the clean-up section of a large pilot-scale bubbling fluidized bed gasifier.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"217 ","pages":"Pages 152-161"},"PeriodicalIF":3.7000,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Engineering Research & Design","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0263876225001303","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Catalytic tar cracking is a promising technique for hot syngas cleaning section in gasification plants since it can remove tars without losing their chemical energy, thereby increasing syngas heating value. Anyway, concerns associated with catalyst selection and preparation and those related to the deactivation phenomenon induced by coke deposition on the active sites still hinder the technical feasibility and economic viability of the process. This study investigates the role of the main operating conditions in the cracking of naphthalene (used as a tar model compound) by means of tests carried out with an iron-supported catalyst (Fe/γ-Al₂O₃), under different values of gas residence times (0.055 s, 0.11 s, 0.165 s and 0.22 s), steam concentrations (0 % and 7.5 %), and reactor temperature (750 °C and 800 °C). The results were used to implement a diffusivity analysis and a kinetic study that drove the design of a tar cracking fixed bed reactor to be used in the clean-up section of a large pilot-scale bubbling fluidized bed gasifier.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Chemical Engineering Research & Design 工程技术-工程：化工

CiteScore

6.10

自引率

7.70%

发文量

623

审稿时长

42 days

期刊介绍： ChERD aims to be the principal international journal for publication of high quality, original papers in chemical engineering. Papers showing how research results can be used in chemical engineering design, and accounts of experimental or theoretical research work bringing new perspectives to established principles, highlighting unsolved problems or indicating directions for future research, are particularly welcome. Contributions that deal with new developments in plant or processes and that can be given quantitative expression are encouraged. The journal is especially interested in papers that extend the boundaries of traditional chemical engineering.