International Journal of Greenhouse Gas Control最新文献

筛选
英文 中文
Putting the genie back in the bottle: Decarbonizing petroleum with direct air capture and enhanced oil recovery 将精灵放回瓶中:利用直接空气捕获和强化采油技术实现石油脱碳
IF 4.6 3区 工程技术
International Journal of Greenhouse Gas Control Pub Date : 2024-11-14 DOI: 10.1016/j.ijggc.2024.104281
Jayant Singh , Udayan Singh , Gonzalo Rodriguez Garcia , Vikram Vishal , Robert Anex
{"title":"Putting the genie back in the bottle: Decarbonizing petroleum with direct air capture and enhanced oil recovery","authors":"Jayant Singh ,&nbsp;Udayan Singh ,&nbsp;Gonzalo Rodriguez Garcia ,&nbsp;Vikram Vishal ,&nbsp;Robert Anex","doi":"10.1016/j.ijggc.2024.104281","DOIUrl":"10.1016/j.ijggc.2024.104281","url":null,"abstract":"<div><div>This study reports the cradle-to-wheel life cycle greenhouse gas (GHG) emissions resulting from enhanced oil recovery (EOR) using CO<sub>2</sub> sourced from direct air capture (DAC). A Monte Carlo simulation model representing variability in technology, location, and supply chain is used to model the possible range of carbon intensities (CI) of oil produced through DAC-EOR. Crude oil produced through DAC-EOR is expected to have a CI of 449 tCO<sub>2</sub>/mbbl. With 95% confidence, the CI is between 345 tCO<sub>2</sub>/mbbl to 553 tCO<sub>2</sub>/mbbl. Producing net-zero GHG emission oil through DAC-EOR is thus highly improbable. An example case of DAC-EOR in the U.S. Permian Basin shows that only in the unlikely instance of the most storage efficient sites using 100% renewable energy does DAC-EOR result in “carbon-negative” oil production.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"139 ","pages":"Article 104281"},"PeriodicalIF":4.6,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142660318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Carbon capture from combined heat and power plants – Impact on the supply and cost of electricity and district heating in cities 热电联产电厂的碳捕获——对城市电力和区域供热供应和成本的影响
IF 3.9 3区 工程技术
International Journal of Greenhouse Gas Control Pub Date : 2023-09-04 DOI: 10.1016/j.ijggc.2023.103973
Johanna Beiron, Fredrik Normann, Filip Johnsson
{"title":"Carbon capture from combined heat and power plants – Impact on the supply and cost of electricity and district heating in cities","authors":"Johanna Beiron,&nbsp;Fredrik Normann,&nbsp;Filip Johnsson","doi":"10.1016/j.ijggc.2023.103973","DOIUrl":"https://doi.org/10.1016/j.ijggc.2023.103973","url":null,"abstract":"<div><p>The capture and storage of biogenic CO<sub>2</sub> emissions from large point sources, such as biomass-combusting combined heat and power (CHP) plants, can contribute to climate change mitigation and provide carbon-negative electricity while supplying district heating in urban areas. This work investigates the impact of retrofitting CO<sub>2</sub> capture processes to CHP plants in a city energy system context. An energy system optimization model is applied to a case study of the city Västerås, Sweden, with scenarios involving two existing CHP plants in the city, retrofitted with either a heat-driven (MEA) or an electricity-driven (HPC) carbon capture process. The results show that the CHP plants might be retrofitted with either option without significantly impacting the district heating system operation or the marginal costs of electricity and district heating in the city. The MEA process mainly causes a reduction in district heating output (up to 30% decrease on an annual basis), which can be offset by heat recovery from the capture unit. The electrified HPC process does not impact the CHP plant steam cycle but implies increased import of electricity to the city (up to 44% increase annually) compared to a reference scenario.</p></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"129 ","pages":"Article 103973"},"PeriodicalIF":3.9,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2208973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
BECCS as climate mitigation option in a Brazilian low carbon energy system: Estimating potential and effect of gigatonne scale CO2 storage BECCS作为巴西低碳能源系统减缓气候变化的备选方案:估计千兆吨规模二氧化碳储存的潜力和效果
IF 3.9 3区 工程技术
International Journal of Greenhouse Gas Control Pub Date : 2023-09-01 DOI: 10.1016/j.ijggc.2023.103945
Tjerk Lap , René Benders , Floor van der Hilst , André Faaij
{"title":"BECCS as climate mitigation option in a Brazilian low carbon energy system: Estimating potential and effect of gigatonne scale CO2 storage","authors":"Tjerk Lap ,&nbsp;René Benders ,&nbsp;Floor van der Hilst ,&nbsp;André Faaij","doi":"10.1016/j.ijggc.2023.103945","DOIUrl":"https://doi.org/10.1016/j.ijggc.2023.103945","url":null,"abstract":"<div><p>Bioenergy with carbon capture and storage (BECCS) can lead to negative emissions, and is seen as an important option to decarbonize energy systems. Its potential decarbonization contribution depends on low-carbon resource availability, its ability to meet end-use demand and the geological storage potential to safely trap CO<sub>2</sub>. Here an energy system model is used to assess the BECCS decarbonization potential in Brazil, considering uncertainty in low-carbon biomass resources, and storage potential, injection rates and costs of CO<sub>2</sub> storage, assessed in eight scenarios. A spatial explicit analysis is done to make improved estimates on the storage potential, injection rates, and costs for CO<sub>2</sub> storage in the Rio Bonito saline aquifer of the Paraná basin.</p><p>Although there are large differences in storage potential (12–117 Gt CO<sub>2</sub>) and costs (on average 5–15 $/t CO<sub>2</sub>), the accumulated volume of CO<sub>2</sub> stored between 2010 and 2050 is 2.9 Gt CO<sub>2</sub> for all scenarios, with injection rates around 240 Mt CO<sub>2</sub> in 2050. This shows that BECCS is a cost-competitive option to decarbonize the Brazilian energy system, even under pessimistic estimates of CO<sub>2</sub> storage potential and costs, and low biomass availability. The cheapest sink locations are selected, in the high development scenario. When CCS development is low, injection rates are the limiting factor. Locations are selected with the highest injection rates, even though sometimes more expensive. When CO<sub>2</sub> storage is limited, total system costs increase, mainly because decarbonization of the industry and freight transport sector relies on more expensive decarbonization options such as green hydrogen.</p></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"128 ","pages":"Article 103945"},"PeriodicalIF":3.9,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3461537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Optimisation of carbon dioxide pressurisation pathways for pipeline offshore delivery 海上输送管道二氧化碳增压路径优化
IF 3.9 3区 工程技术
International Journal of Greenhouse Gas Control Pub Date : 2023-09-01 DOI: 10.1016/j.ijggc.2023.103943
Gcinisizwe Msimisi Dlamini , Philip Loldrup Fosbøl , Kenneth Ness , Eryk Remiezowicz , Svein-Erik Losnegård , Nicolas von Solms
{"title":"Optimisation of carbon dioxide pressurisation pathways for pipeline offshore delivery","authors":"Gcinisizwe Msimisi Dlamini ,&nbsp;Philip Loldrup Fosbøl ,&nbsp;Kenneth Ness ,&nbsp;Eryk Remiezowicz ,&nbsp;Svein-Erik Losnegård ,&nbsp;Nicolas von Solms","doi":"10.1016/j.ijggc.2023.103943","DOIUrl":"https://doi.org/10.1016/j.ijggc.2023.103943","url":null,"abstract":"<div><p>To maximise economies of scale of future CO<sub>2</sub> transport infrastructure, new CO<sub>2</sub> pipelines within the carbon capture utilisation and storage (CCUS) value chain, should ideally have excess capacity to satisfy future transportation demand. However, in scenarios where booster compressors cannot be employed along the pipeline, the rise in pipeline mass flow rate over time culminates in higher energy consumption of upstream compression/liquefaction. This work explores the optimisation of various CO<sub>2</sub> pressurisation pathways and assesses their flexibility in handling a variability in pipeline mass flow rates whilst delivering a captured CO<sub>2</sub> stream at a fixed final pressure of 100 barg. The study is based on the Dunkirk 3D Project, which has a planned nameplate capture capacity of 1 MtCO<sub>2</sub>/y, with other CO<sub>2</sub> point sources taking up additional pipeline utilisation capacity. Two categories of CO<sub>2</sub> pressurisation pathways are considered, gas compression and subcritical liquefaction and pumping. These pathways are optimised to enable a fair comparison, considering the number of compression stages, compression ratio, and cooling/liquefaction system. Modelling results indicate that the temperature of the cooling utility has the greatest influence in reducing the overall work duty and sensitivity to a variability in pipeline mass flow rate. Furthermore, the utilisation of 5 °C seawater as a cooling and liquefaction utility reduces the work duty of the conditioning process by 25.4% and requires fewer compression stages relative to conventional gas compression utilising cooling water at 30 °C.</p></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"128 ","pages":"Article 103943"},"PeriodicalIF":3.9,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2290328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Potential for permanent CO2 sequestration in depleted volcanic reservoirs in the offshore Campos Basin, Brazil 巴西Campos盆地近海枯竭火山储层永久封存二氧化碳的潜力
IF 3.9 3区 工程技术
International Journal of Greenhouse Gas Control Pub Date : 2023-09-01 DOI: 10.1016/j.ijggc.2023.103942
Germano Mário Silva Ramos, José Antonio Barbosa, Araly Fabiana Lima de Araújo, Osvaldo José Correia Filho, Carla Joana Santos Barreto, Jefferson Tavares Cruz Oliveira, Roberta Samico de Medeiros
{"title":"Potential for permanent CO2 sequestration in depleted volcanic reservoirs in the offshore Campos Basin, Brazil","authors":"Germano Mário Silva Ramos,&nbsp;José Antonio Barbosa,&nbsp;Araly Fabiana Lima de Araújo,&nbsp;Osvaldo José Correia Filho,&nbsp;Carla Joana Santos Barreto,&nbsp;Jefferson Tavares Cruz Oliveira,&nbsp;Roberta Samico de Medeiros","doi":"10.1016/j.ijggc.2023.103942","DOIUrl":"https://doi.org/10.1016/j.ijggc.2023.103942","url":null,"abstract":"<div><p>The pre-salt oil and gas production in Brazil faces a significant challenge due to the high CO<sub>2</sub> content in these reservoirs. Approximately 600,000 t of CO<sub>2</sub> are reinjected monthly in the reservoirs, but the increased production of CO<sub>2</sub> will demand alternatives for sequestration. Experiments and pilot projects have demonstrated the viability of CO<sub>2</sub> sequestration through the mineralization method in basaltic rocks. Here, we present a study aimed at demonstrating the feasibility of using the volcanic rocks of the Cabiúnas Formation, located at the base of the pre-salt section in shallow waters of the Campos Basin, for CCS projects. We used legacy data to determine the regional characteristics and porosity distribution of the volcanic sequence to assess the feasibility of geological sequestration in this region. Our estimates demonstrated that the Cabiúnas flood basalts have a good to excellent storage capacity. The modeling of a 31km<sup>2</sup> hypothetical reservoir with a thickness of 300 m in the upper part of the sequence above the Badejo Field revealed a storage estimate of 16–47 Mt. The technical aspects discussed in this study provide valuable insights that can help with the development of future CCS projects in the volcanic rocks of this petroleum province.</p></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"128 ","pages":"Article 103942"},"PeriodicalIF":3.9,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2822812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of temperature on convective-reactive transport of CO2 in geological formations 温度对地质构造中CO2对流反应输运的影响
IF 3.9 3区 工程技术
International Journal of Greenhouse Gas Control Pub Date : 2023-09-01 DOI: 10.1016/j.ijggc.2023.103944
Sara Tabrizinejadas , Marwan Fahs , Hussein Hoteit , Anis Younes , Behzad Ataie-Ashtiani , Craig T. Simmons , Jerome Carrayrou
{"title":"Effect of temperature on convective-reactive transport of CO2 in geological formations","authors":"Sara Tabrizinejadas ,&nbsp;Marwan Fahs ,&nbsp;Hussein Hoteit ,&nbsp;Anis Younes ,&nbsp;Behzad Ataie-Ashtiani ,&nbsp;Craig T. Simmons ,&nbsp;Jerome Carrayrou","doi":"10.1016/j.ijggc.2023.103944","DOIUrl":"https://doi.org/10.1016/j.ijggc.2023.103944","url":null,"abstract":"<div><p>Geological CO<sub>2</sub> sequestration (GCS) remains the main promising solution to mitigate global warming. Understating the fate of CO<sub>2</sub> behavior is crucial for securing its containment in the reservoir and predicting the impact of dissolved CO<sub>2</sub> on the host formation. Most modeling-based studies in the literature investigated the convective-reactive transport of CO<sub>2</sub> by assuming isothermal conditions. The effect of temperature on the convective-reactive transport of CO<sub>2</sub> is still poorly understood, particularly at the field scale. The objective of this study is to provide an in-depth understanding of CO<sub>2</sub>-related reactive thermohaline convection (RTHC) processes at field scale. Thus, a new numerical model based on advanced finite element formulations is developed. The new model incorporates an accurate time integration scheme with error control.  Numerical experiments confirm high accuracy and efficiency of the newly developed model. The effect of temperature on CO<sub>2</sub> transport is investigated for a field case in the Viking reservoir in the North Sea. Results show that including the temperature effect intensifies the fingering processes and, consequently, CO<sub>2</sub> dissolution. Neglecting the thermal convection processes and the impact of temperature on the dissolution rate can significantly impact the model predictions. A sensitivity analysis is developed to understand the effect of parameters governing the dissolution rate on the fingering phenomenon and the total CO<sub>2</sub> flux.</p></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"128 ","pages":"Article 103944"},"PeriodicalIF":3.9,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2956492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Scheduling optimization of a wind power-containing power system considering the integrated and flexible carbon capture power plant and P2G equipment under demand response and reward and punishment ladder-type carbon trading 需求响应和奖惩阶梯式碳交易下考虑集成柔性碳捕集电厂和P2G设备的含风电电力系统调度优化
IF 3.9 3区 工程技术
International Journal of Greenhouse Gas Control Pub Date : 2023-09-01 DOI: 10.1016/j.ijggc.2023.103955
Tao Yi , Changmei Zhang
{"title":"Scheduling optimization of a wind power-containing power system considering the integrated and flexible carbon capture power plant and P2G equipment under demand response and reward and punishment ladder-type carbon trading","authors":"Tao Yi ,&nbsp;Changmei Zhang","doi":"10.1016/j.ijggc.2023.103955","DOIUrl":"https://doi.org/10.1016/j.ijggc.2023.103955","url":null,"abstract":"<div><p>At present, coal-fired thermal power still dominates in China, and as the environmental pollution problem worsens, it is critical to find the optimal combination of coal and new energy to reduce CO<sub>2</sub><span> emissions and promote new energy consumption. Based on this, this paper considers a reward and punishment ladder-type carbon trading mechanism, firstly, unit transformation of the conventional coal power plant (CPP) on the power side, forming the integrated and flexible carbon capture power plant (IFCCPP), and constructing a coupling model of the IFCCPP with power to gas (P2G) equipment and wind farms(WFs), forming an IFCCPP-P2G-WF system; secondly, introducing a price demand response mechanism on the load side, and establishing a two-stage scheduling model for the IFCCPP-P2G-WF system, with the first stage model aiming at the minimum sum of squared load fluctuations and the second stage model aiming at the minimum operation cost. Finally, the effectiveness of the scheduling model proposed in this paper is validated by comparing and analyzing the scheduling results under eight scenarios. When compared to other models, the proposed model significantly increases wind power consumption, reduces carbon emissions, and lowers operation cost, all of which have advantages.</span></p></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"128 ","pages":"Article 103955"},"PeriodicalIF":3.9,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2956493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fundamental investigation of reactive-convective transport: Implications for long-term carbon dioxide (CO2) sequestration 反应性对流输送的基础研究:对长期二氧化碳(CO2)封存的影响
IF 3.9 3区 工程技术
International Journal of Greenhouse Gas Control Pub Date : 2023-07-01 DOI: 10.1016/j.ijggc.2023.103916
Md Fahim Shahriar, Aaditya Khanal
{"title":"Fundamental investigation of reactive-convective transport: Implications for long-term carbon dioxide (CO2) sequestration","authors":"Md Fahim Shahriar,&nbsp;Aaditya Khanal","doi":"10.1016/j.ijggc.2023.103916","DOIUrl":"https://doi.org/10.1016/j.ijggc.2023.103916","url":null,"abstract":"<div><p>The density-driven convection coupled with chemical reaction is the preferred mechanism for permanently storing CO<sub>2</sub> in saline aquifers. This study uses a 2D visual Hele-Shaw cell to evaluate and visualize the density-driven convection formed due to gravitational instabilities. The primary goal of the experiments is to understand the various mechanisms for the mass transfer of gaseous CO<sub>2</sub> into brine with different initial ionic concentrations and flow permeability. Moreover, the impact of CO<sub>2</sub> injection locations, reservoir dipping angle, and permeability heterogeneity is also investigated. We observed that the presence of salts resulted in earlier onset of convection and a larger convective finger wavelength than the case with no dissolved salts. Additionally, a higher lateral mixing between CO<sub>2</sub> fingers is observed when dipping is involved. The CO<sub>2</sub> dissolution, indicated by the area of the pH-depressed region, depends on the type and concentration of the ions present in the brine and is observed to be 0.38–0.77 times compared to when no salt is present. Although convective flow is slowed in the presence of salts, the diffusive flux is enhanced, as observed from both qualitative and quantitative results. Moreover, the reduced formation permeability, introduced by using a flow barrier, resulted in numerous regions not being swept by the dissolved CO<sub>2</sub>, indicating an inefficient dissolution. We also investigated the effect of discrete high-conductivity fractures within the flow barriers, which showed an uneven vertical sweep and enhanced flow channeling. Lastly, the parameters regarding CO<sub>2</sub> leakage risk during storage are identified and discussed.</p></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"127 ","pages":"Article 103916"},"PeriodicalIF":3.9,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2695808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Operational experiences of chemical-looping combustion with 18 manganese ores in a 300W unit 18个锰矿石在300W机组化学环燃烧的运行经验
IF 3.9 3区 工程技术
International Journal of Greenhouse Gas Control Pub Date : 2023-07-01 DOI: 10.1016/j.ijggc.2023.103937
Anders Lyngfelt , Patrick Moldenhauer , Max Biermann , Kristof Johannsen , Dominik Wimmer , Malin Hanning
{"title":"Operational experiences of chemical-looping combustion with 18 manganese ores in a 300W unit","authors":"Anders Lyngfelt ,&nbsp;Patrick Moldenhauer ,&nbsp;Max Biermann ,&nbsp;Kristof Johannsen ,&nbsp;Dominik Wimmer ,&nbsp;Malin Hanning","doi":"10.1016/j.ijggc.2023.103937","DOIUrl":"https://doi.org/10.1016/j.ijggc.2023.103937","url":null,"abstract":"&lt;div&gt;&lt;p&gt;Chemical-looping combustion is a novel combustion technology with inherent CO&lt;sub&gt;2&lt;/sub&gt; capture. The process uses oxygen carriers in the form of metal oxide particles to transfer oxygen from air to fuel. The particles make up the bed material in two fluidized-bed reactors, the air reactor and the fuel reactor, and circulate between the two reactors. Natural minerals of low cost are attractive as oxygen carriers in chemical-looping combustion (CLC), in particular when used for combustion of solid fuels. The presence of ash can restrict the effective lifetime of the oxygen carrier either by loss of bed material associated with the ash removal or by direct reactions between ash and oxygen carrier that impair its reactivity. Independent of the presence of ash, the oxygen carrier lifetime can be limited by attrition leading to loss of fines.&lt;/p&gt;&lt;p&gt;Ores considered and used in chemical-looping combustion include ilmenite, iron ore and manganese ore. Manganese ore is the least tested of these, although several studies suggest manganese ores often have higher reactivity as compared to the other two. The present study compares data from operation of 18 different manganese ores in a 300 W chemical-looping combustor, involving 329 h of operation with fuel. Results for 10 of these, involving 148 h of operation, have previously not been published. Some of these manganese ores have also been used in larger pilots, as well as in a 10 MW circulating fluidized-bed boiler.&lt;/p&gt;&lt;p&gt;Operational results indicate significant differences between the ores with respect to performance, with syngas conversion ranging between 80 and 100% and methane conversion ranging between 17 and 59% and attrition rates ranging from very high to as low as 0.05%/h. For a few ores formation of fines led to operational failure after only a short period with fuel and for one of the ores agglomeration led to failure.&lt;/p&gt;&lt;p&gt;The correlation between performance data and oxygen-carrier characteristics, including elementary analysis, was assessed. Gas conversion for both syngas and methane were correlated to gas conversion in lab testing. However, neither jet cup attrition data nor crushing strength was correlated to attrition in 300 W. This suggests that the mechanisms causing attrition are different at hot conditions and with reactions taking place, which emphasizes the need for pilot testing in the screening of manganese ore oxygen carriers.&lt;/p&gt;&lt;p&gt;Fortunately, the correlation between gas conversion and attrition was weak. Thus, high reactivity is not necessarily associated with low attrition assistance and vice versa and several ores show high reactivity in combination with low or moderate attrition. Consequently, screening of manganese ores is well worth while, in order to find materials that can give both high conversion and long life-time. The best four ores were the Chinese Guizhou, South-African UMK, Elwaleed B, and Sibelco´s Braunite having syngas conversion(%)/attrition rate(%/h) ","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"127 ","pages":"Article 103937"},"PeriodicalIF":3.9,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"1812380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Selecting representative geological realizations to model subsurface CO2 storage under uncertainty 选择有代表性的地质实现,模拟不确定条件下的地下二氧化碳储存
IF 3.9 3区 工程技术
International Journal of Greenhouse Gas Control Pub Date : 2023-07-01 DOI: 10.1016/j.ijggc.2023.103920
Seyed Kourosh Mahjour, Salah A. Faroughi
{"title":"Selecting representative geological realizations to model subsurface CO2 storage under uncertainty","authors":"Seyed Kourosh Mahjour,&nbsp;Salah A. Faroughi","doi":"10.1016/j.ijggc.2023.103920","DOIUrl":"https://doi.org/10.1016/j.ijggc.2023.103920","url":null,"abstract":"<div><p><span><span>Carbon capture and storage (CCS) is one of the quickest and most effective solutions for reducing </span>carbon emissions. The majority of subsurface storage occurs in saline aquifers, for which geological information is lacking which in turn results in geological uncertainty. To evaluate uncertainty in </span><span><math><msub><mrow><mi>CO</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span><span> injection projections, the use of multiple geological realizations (GRs) has been practiced very commonly. In this approach, hundreds or thousands of high-resolution GRs is used that quickly becomes computationally expensive. This issue can be addressed with representative geological realizations (RGRs) that preserve the uncertainty domain of the ensemble GRs. In this study, we propose the use of unsupervised machine learning (UML) frameworks, including dissimilarity measurement, dimensionality reduction, clustering and sampling algorithms ta select a predetermined number of RGRs. We compare the simulation outputs of the RGR sets and the ensemble using the Kolmogorov–Smirnov (KS) test to select the best UML. The UML frameworks and their associated selection processes are evaluated using a saline aquifer with a single </span><span><math><msub><mrow><mi>CO</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span> injection well and 200 GRs with varying uncertain petrophysical characteristics. The best UML framework is selected to use only 5% of the GRs while maintaining the uncertainty domain of the ensemble GRs. In addition, the best UML framework is tested using a saline aquifer with three <span><math><msub><mrow><mi>CO</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span> injection wells and varied GRs. The results show that our proposed UML framework can be used to choose RGRs, capturing the whole uncertainty domain. Our approach leads to a significant reduction in the computational cost associated with scenario testing, decision-making, and development planning for <span><math><msub><mrow><mi>CO</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span> storage sites under geological uncertainty.</p></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"127 ","pages":"Article 103920"},"PeriodicalIF":3.9,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"1556202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信