15th Greenhouse Gas Control Technologies Conference 2020 (GHGT-15)最新文献

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Stabilization of CO2 Capture Performance Using Natural Modified CaO-Based Pellets Prepared by Extrusion Granulation 挤出造粒法制备天然改性cao基球团稳定CO2捕集性能

15th Greenhouse Gas Control Technologies Conference 2020 (GHGT-15) Pub Date : 2021-04-06 DOI: 10.2139/ssrn.3821788

P. Teixeira, Carmen Bacariza, I. Mohamed, Carla I. C. Pinheiro

{"title":"Stabilization of CO2 Capture Performance Using Natural Modified CaO-Based Pellets Prepared by Extrusion Granulation","authors":"P. Teixeira, Carmen Bacariza, I. Mohamed, Carla I. C. Pinheiro","doi":"10.2139/ssrn.3821788","DOIUrl":"https://doi.org/10.2139/ssrn.3821788","url":null,"abstract":"CaO-based materials have a high commercialization potential to be used as Calcium-Looping (CaL) sorbents for CO2 capture, owing to their high CO2 sorption capacity and the lowcost raw materials.<br><br>The present work focuses on the comparative study of two natural CaO-based sorbents (limestone and wastes of marble powder) with and without alumina incorporation, tested under CaL conditions for CO2 capture. The incorporation of alumina in CaO-based pellets was performed by extrusion followed by calcination at 800 ºC and granulation, using different CaO/Al2O3 ratios (50/50, 60/40 and 70/30) and MethocellTM as pore forming agent. The experiments were carried out in a laboratory scale fixed bed reactor unit along 10 carbonation-calcination cycles using a gas mixture with a CO2 concentration of 25% to mimic the real flue gases in the cement industry, and the calcination was performed under industrial realistic conditions (80% of CO2; 930 ºC) foreseen for the subsequent CO2 utilization. <br><br>During the CaL tests a fraction of CaO was converted to calcium aluminate due to its exposure to the process high temperatures. Anyway, the use of modified natural CaO-based pellets containing Al2O3 as structural agent is attractive, since higher CaO conversion values were achieved. The enhanced performance of pellets can be justified by the higher specific surface area and stabilization of CaO crystallite sizes along the cycles promoted by the formation of calcium aluminates. The highest CaO conversion was achieved for the case of 60/40 CaO/Al2O3 pellets, allowing the reduction of the CaO make-up frequency along the time as well as the associated costs.","PeriodicalId":311060,"journal":{"name":"15th Greenhouse Gas Control Technologies Conference 2020 (GHGT-15)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121473760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Design and Analysis of Novel Co2 Conditioning Processes in the 3d Project 三维工程中新型Co2调节工艺的设计与分析

15th Greenhouse Gas Control Technologies Conference 2020 (GHGT-15) Pub Date : 2021-04-04 DOI: 10.2139/ssrn.3819391

Wentao Gong, Rik Timmermans, Eryk Remiezowicz, P. Fosbøl, N. von Solms

{"title":"Design and Analysis of Novel Co2 Conditioning Processes in the 3d Project","authors":"Wentao Gong, Rik Timmermans, Eryk Remiezowicz, P. Fosbøl, N. von Solms","doi":"10.2139/ssrn.3819391","DOIUrl":"https://doi.org/10.2139/ssrn.3819391","url":null,"abstract":"In this work, CO2 conditioning processes for ship-based CCS chain are modelled using simulation software APSEN HYSYS. The case study uses the captured CO2 gas from the 3D project as the feed. The feed gas is saturated with water and contains H2S and CO as impurities. The purification processes for dehydration, desulfurization and CO removal are reviewed. Two liquefaction approaches, open cycle liquefaction and closed cycle liquefaction, are modelled and compared for transport pressure 7 bar and 15 bar. It is found that the energy requirement of the open cycle liquefaction process is higher than that of the closed cycle liquefaction process. For the closed cycle liquefaction, two refrigerants: ammonia and propane are considered. Results show that the energy requirement of the process using ammonia is lower than the process using propane. When comparing the two transport pressures it is found that liquefaction at 15 bar requires less energy than 7 bar. On top of that, both refrigerants are unsuited for the liquefaction of CO2 at 7 bar as their operating pressures are below 1 atm. Several optimization methods are tested on the closed cycle liquefaction design. The net power consumption of the closes cycle liquefaction is reduced after utilizing intermediate pressure ammonia cold from CO stripper for pre-cooling.","PeriodicalId":311060,"journal":{"name":"15th Greenhouse Gas Control Technologies Conference 2020 (GHGT-15)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132781215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A New Sulfolane based Solvent for CO2 Capture 一种新型亚砜基CO2捕集溶剂

15th Greenhouse Gas Control Technologies Conference 2020 (GHGT-15) Pub Date : 2021-04-01 DOI: 10.2139/ssrn.3817192

Jayangi D. Wagaarachchige, Zulkifli Idris, Nithin B. Kummamuru, K. A. Sætre, M. Halstensen, Klaus‐Joachim Jens

引用次数: 0