Flexible strategies for carbon-negative syngas and biochar poly-generation via a novel chemical looping approach

IF 3.5 3区工程技术 Q2 ENGINEERING, CHEMICAL

AIChE Journal Pub Date : 2024-08-12 DOI:10.1002/aic.18533

Gen Liu, Zhongshun Sun, Zhichao Wang, Binpeng Yu, Xiantan Yang, Bo Zhang, Rongjiang Zhang, Bolun Yang, Zhiqiang Wu

{"title":"Flexible strategies for carbon-negative syngas and biochar poly-generation via a novel chemical looping approach","authors":"Gen Liu, Zhongshun Sun, Zhichao Wang, Binpeng Yu, Xiantan Yang, Bo Zhang, Rongjiang Zhang, Bolun Yang, Zhiqiang Wu","doi":"10.1002/aic.18533","DOIUrl":null,"url":null,"abstract":"This work proposed a pyrolysis chemical looping reforming-two stage regeneration (PCLR-TR) process with carbon-negative syngas and biochar poly-generation，aimed at overcoming challenges in chemical looping gasification. The process effectively separates pyrolysis and reforming, circumventing slow solid–solid reactions and enabling the flexible adjustment of the H2/CO ratio. The two-stage regeneration ensures improved synchronization of reaction rates across different reactors. The results indicate that manipulation of process parameters allows for flexible adjustment of the H2/CO ratio in syngas (ranging from 1.02 to 3.83). The introduction of CO2 feed in the first stage regeneration reactor reduces the oxygen carrier exothermic intensity in the second stage regeneration reactor by 58%. Optimization results suggest that the generated syngas is compatible with diverse downstream applications, exhibiting a maximum CO2 negative emission of 1.85 kg/kg syngas. The PCLR-TR system offers a versatile and environmentally friendly solution for the energy and chemical industries.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"70 11","pages":""},"PeriodicalIF":3.5000,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"AIChE Journal","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/aic.18533","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

This work proposed a pyrolysis chemical looping reforming-two stage regeneration (PCLR-TR) process with carbon-negative syngas and biochar poly-generation，aimed at overcoming challenges in chemical looping gasification. The process effectively separates pyrolysis and reforming, circumventing slow solid–solid reactions and enabling the flexible adjustment of the H₂/CO ratio. The two-stage regeneration ensures improved synchronization of reaction rates across different reactors. The results indicate that manipulation of process parameters allows for flexible adjustment of the H₂/CO ratio in syngas (ranging from 1.02 to 3.83). The introduction of CO₂ feed in the first stage regeneration reactor reduces the oxygen carrier exothermic intensity in the second stage regeneration reactor by 58%. Optimization results suggest that the generated syngas is compatible with diverse downstream applications, exhibiting a maximum CO₂ negative emission of 1.85 kg/kg syngas. The PCLR-TR system offers a versatile and environmentally friendly solution for the energy and chemical industries.

查看原文本刊更多论文

通过新型化学循环方法灵活生成负碳合成气和生物炭的策略

本研究提出了一种热解化学循环重整-两段再生（PCLR-TR）工艺，该工艺具有负碳合成气和生物炭多联产功能，旨在克服化学循环气化过程中的难题。该工艺有效地分离了热解和重整，避免了缓慢的固-固反应，并可灵活调整 H2/CO 比率。两阶段再生可确保不同反应器的反应速率更加同步。结果表明，通过调节工艺参数，可以灵活调整合成气中的 H2/CO 比率（从 1.02 到 3.83 不等）。在第一阶段再生反应器中引入二氧化碳进料，可将第二阶段再生反应器中氧载体的放热强度降低 58%。优化结果表明，生成的合成气可用于多种下游应用，最大二氧化碳负排放为 1.85 千克/千克合成气。PCLR-TR 系统为能源和化工行业提供了一种多功能的环保解决方案。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

AIChE Journal 工程技术-工程：化工

CiteScore

7.10

自引率

10.80%

发文量

411

审稿时长

3.6 months

期刊介绍： The AIChE Journal is the premier research monthly in chemical engineering and related fields. This peer-reviewed and broad-based journal reports on the most important and latest technological advances in core areas of chemical engineering as well as in other relevant engineering disciplines. To keep abreast with the progressive outlook of the profession, the Journal has been expanding the scope of its editorial contents to include such fast developing areas as biotechnology, electrochemical engineering, and environmental engineering. The AIChE Journal is indeed the global communications vehicle for the world-renowned researchers to exchange top-notch research findings with one another. Subscribing to the AIChE Journal is like having immediate access to nine topical journals in the field. Articles are categorized according to the following topical areas: Biomolecular Engineering, Bioengineering, Biochemicals, Biofuels, and Food Inorganic Materials: Synthesis and Processing Particle Technology and Fluidization Process Systems Engineering Reaction Engineering, Kinetics and Catalysis Separations: Materials, Devices and Processes Soft Materials: Synthesis, Processing and Products Thermodynamics and Molecular-Scale Phenomena Transport Phenomena and Fluid Mechanics.