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China’s policy framework for carbon capture, utilization and storage: Review, analysis, and outlook

《能源前沿（英文）》 2023年第17卷第3期页码 400-411 doi: 10.1007/s11708-023-0862-z

摘要： Carbon capture, utilization, and storage (CCUS) is estimated to contribute substantial CO₂ emission reduction to carbon neutrality in China. There is yet a large gap between such enormous demand and the current capacity, and thus a sound enabling environment with sufficient policy support is imperative for CCUS development. This study reviewed 59 CCUS-related policy documents issued by the Chinese government as of July 2022, and found that a supporting policy framework for CCUS is taking embryonic form in China. More than ten departments of the central government have involved CCUS in their policies, of which the State Council, the National Development and Reform Commission (NDRC), the Ministry of Science and Technology (MOST), and the Ministry of Ecological Environment (MEE) have given the greatest attention with different focuses. Specific policy terms are further analyzed following the method of content analysis and categorized into supply-, environment- and demand-type policies. The results indicate that supply-type policies are unbalanced in policy objectives, as policy terms on technology research and demonstration greatly outnumber those on other objectives, and the attention to weak links and industrial sectors is far from sufficient. Environment-type policies, especially legislations, standards, and incentives, are inadequate in pertinence and operability. Demand-type policies are absent in the current policy system but is essential to drive the demand for the CCUS technology in domestic and foreign markets. To meet the reduction demand of China’s carbon neutral goal, policies need to be tailored according to needs of each specific technology and implemented in an orderly manner with well-balanced use on multiple objectives.

关键词： carbon capture utilization and storage (CCUS) policy content analysis China

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我国碳捕集利用与封存技术发展研究

张贤,李阳,马乔,刘玲娜

《中国工程科学》 2021年第23卷第6期页码 70-80 doi: 10.15302/J-SSCAE-2021.06.004

摘要：

碳捕集利用与封存（ CCUS）是实现碳中和目标不可或缺的重要技术选择。为了系统梳理技术发展现状、明确未来发展方向，本文对我国 CCUS 技术水平、示范进展、成本效益、潜力需求等进行了全面评估。我国 CCUS 技术发展迅速，与国际整体发展水平相当，目前处于工业化示范阶段，但部分关键技术落后于国际先进水平。在成本效益方面，尽管当前 CCUS 技术成本较高，但未来可有效降低实现碳中和目标的整体减排成本。为此建议，加快构建 CCUS 技术体系，推进全链条集成示范，加快管网布局和基础设施建设，完善财税激励政策和法律法规体系。

关键词：碳中和，CCUS，技术研发与示范，减排潜力，成本与效益

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CCS，CCUS，CCRS，CMC系统集成

金涌,朱兵,胡山鹰,洪丽云

《中国工程科学》 2010年第12卷第8期页码 49-55

摘要：

二氧化碳捕集—封存、生产生活中的节能减排和可再生能源的开发是实施低碳经济的三个核心举措。近年来提出的碳捕集—利用—封存和碳捕集—再利用—封存是更为积极的CO2减排应对策略。人类在未来必须要把宝贵的碳元素同时作为资源和能源载体循环利用，进行全程管理。

关键词：低碳经济碳捕集—封存碳捕集—利用—封存碳捕集—再利用—封存碳的全程管理

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Lifecycle carbon footprint and cost assessment for coal-to-liquid coupled with carbon capture, storage

《能源前沿（英文）》 2023年第17卷第3期页码 412-427 doi: 10.1007/s11708-023-0879-3

摘要： The coal-to-liquid coupled with carbon capture, utilization, and storage technology has the potential to reduce CO₂ emissions, but its carbon footprint and cost assessment are still insufficient. In this paper, coal mining to oil production is taken as a life cycle to evaluate the carbon footprint and levelized costs of direct-coal-to-liquid and indirect-coal-to-liquid coupled with the carbon capture utilization and storage technology under three scenarios: non capture, process capture, process and public capture throughout the life cycle. The results show that, first, the coupling carbon capture utilization and storage technology can reduce CO₂ footprint by 28%–57% from 5.91 t CO₂/t·oil of direct-coal-to-liquid and 24%–49% from 7.10 t CO₂/t·oil of indirect-coal-to-liquid. Next, the levelized cost of direct-coal-to-liquid is 648–1027 $/t of oil, whereas that of indirect-coal-to-liquid is 653–1065 $/t of oil. When coupled with the carbon capture utilization and storage technology, the levelized cost of direct-coal-to-liquid is 285–1364 $/t of oil, compared to 1101–9793 $/t of oil for indirect-coal-to-liquid. Finally, sensitivity analysis shows that CO₂ transportation distance has the greatest impact on carbon footprint, while coal price and initial investment cost significantly affect the levelized cost of coal-to-liquid.

关键词： coal-to-liquid carbon capture utilization and storage (CCUS) carbon footprint levelized cost of liquid lifecycle assessment

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我国燃煤发电CCS/CCUS技术发展方向及发展路线图研究

叶云云, 廖海燕, 王鹏, 王军伟, 李全生

《中国工程科学》 2018年第20卷第3期页码 80-89 doi: 10.15302/J-SSCAE-2018.03.012

摘要：本文提出了碳捕获和埋存/碳捕获、利用和埋存（CCS/CCUS）技术发展方向，按时间节点制定了我国CO₂捕集技术和输送技术发展路线图、CO₂化工、微藻生物制油和矿化等利用技术发展路线图；对2020、2030、2050年可能达到的全国碳排放量进行测算，对节能降耗、调整能源结构、CCS/CCUS技术对CO2减排的贡献度进行了评估，并提出了推广应用建议。

关键词：燃煤发电碳捕获、利用和埋存技术路线图排放量预测政策建议

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二氧化碳捕集、利用与封存技术 Perspectives

林青阳, 张霄, 王涛, 郑成航, 高翔

《工程（英文）》 2022年第14卷第7期页码 27-32 doi: 10.1016/j.eng.2021.12.013

摘要：二氧化碳的排放会导致气候变化，而二氧化碳捕集、利用与封存（CCUS）是一种可持续性技术，在减排方面具有前景。从这个角度而言，二氧化碳捕集着重于化学吸收技术，主要原因在于其商业化潜力。

关键词：二氧化碳捕集、利用与封存二氧化碳捕集二氧化碳利用二氧化碳封存化学吸收电化学转化封存机制

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基于样地调查的地质碳储量的贝叶斯优化

Xueying Lu, Kirk E. Jordan, Mary F. Wheeler, Edward O. Pyzer-Knapp, Matthew Benatan

《工程（英文）》 2022年第18卷第11期页码 96-104 doi: 10.1016/j.eng.2022.06.011

摘要：

We present a framework that couples a high-fidelity compositional reservoir simulator with Bayesian optimization (BO) for injection well scheduling optimization in geological carbon sequestration. This work represents one of the first at tempts to apply BO and high-fidelity physics models to geological carbon storage. The implicit parallel accurate reservoir simulator (IPARS) is utilized to accurately capture the underlying physical processes during CO2 sequestration. IPARS provides a framework for several flow and mechanics models and thus supports both stand-alone and coupled simulations. In this work, we use the compositional flow module to simulate the geological carbon storage process. The compositional flow model, which includes a hysteretic three-phase relative permeability model, accounts for three major CO2 trapping mechanisms: structural trapping, residual gas trapping, and solubility trapping. Furthermore, IPARS is coupled to the International Business Machines (IBM) Corporation Bayesian Optimization Accelerator (BOA) for parallel optimizations of CO2 injection strategies during field-scale CO2 sequestration. BO builds a probabilistic surrogate for the objective function using a Bayesian machine learning algorithm—the Gaussian process regression, and then uses an acquisition function that leverages the uncertainty in the surrogate to decide where to sample. The IBM BOA addresses the three weaknesses of standard BO that limits its scalability in that IBM BOA supports parallel (batch) executions, scales better for high-dimensional problems, and is more robust to initializations. We demonstrate these merits by applying the algorithm in the optimization of the CO2 injection schedule in the Cranfield site in Mississippi, USA, using field data. The optimized injection schedule achieves 16% more gas storage volume and 56% less water/surfactant usage compared with the baseline. The performance of BO is compared with that of a genetic algorithm (GA) and a covariance matrix adaptation (CMA)-evolution strategy (ES). The results demonstrate the superior performance of BO, in that it achieves a competitive objective function value with over 60% fewer forward model evaluations.

关键词：组分流贝叶斯优化地质碳储量 CCUS 机器学习人工智能科学

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Energy storage resources management: Planning, operation, and business model

《工程管理前沿（英文）》页码 373-391 doi: 10.1007/s42524-022-0194-4

摘要： With the acceleration of supply-side renewable energy penetration rate and the increasingly diversified and complex demand-side loads, how to maintain the stable, reliable, and efficient operation of the power system has become a challenging issue requiring investigation. One of the feasible solutions is deploying the energy storage system (ESS) to integrate with the energy system to stabilize it. However, considering the costs and the input/output characteristics of ESS, both the initial configuration process and the actual operation process require efficient management. This study presents a comprehensive review of managing ESS from the perspectives of planning, operation, and business model. First of all, in terms of planning and configuration, it is investigated from capacity planning, location planning, as well as capacity and location combined planning. This process is generally the first step in deploying ESS. Then, it explores operation management of ESS from the perspectives of state assessment and operation optimization. The so-called state assessment refers to the assessment of three aspects: The state of charge (SOC), the state of health (SOH), and the remaining useful life (RUL). The operation optimization includes ESS operation strategy optimization and joint operation optimization. Finally, it discusses the business models of ESS. Traditional business models involve ancillary services and load transfer, while emerging business models include electric vehicle (EV) as energy storage and shared energy storage.

关键词： energy storage system energy storage resources management planning configuration operational management business model

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Production of hydrogen from fossil fuel: A review

《能源前沿（英文）》 2023年第17卷第5期页码 585-610 doi: 10.1007/s11708-023-0886-4

摘要： Production of hydrogen, one of the most promising alternative clean fuels, through catalytic conversion from fossil fuel is the most technically and economically feasible technology. Catalytic conversion of natural gas into hydrogen and carbon is thermodynamically favorable under atmospheric conditions. However, using noble metals as a catalyst is costly for hydrogen production, thus mandating non-noble metal-based catalysts such as Ni, Co, and Cu-based alloys. This paper reviews the various hydrogen production methods from fossil fuels through pyrolysis, partial oxidation, autothermal, and steam reforming, emphasizing the catalytic production of hydrogen via steam reforming of methane. The multicomponent catalysts composed of several non-noble materials have been summarized. Of the Ni, Co, and Cu-based catalysts investigated in the literature, Ni/Al₂O₃ catalyst is the most economical and performs best because it suppresses the coke formation on the catalyst. To avoid carbon emission, this method of hydrogen production from methane should be integrated with carbon capture, utilization, and storage (CCUS). Carbon capture can be accomplished by absorption, adsorption, and membrane separation processes. The remaining challenges, prospects, and future research and development directions are described.

关键词： methane catalytic conversion natural gas hydrogen production CCUS

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海洋CO2管道输送技术现状与展望

王子明,李清平,李姜辉,范振宁,张建

《中国工程科学》 doi: 10.15302/J-SSCAE-2023.06.017

摘要：

管道输送是经济高效的CO2运输方式，海洋CO2运输是离岸碳捕集、利用与封存（CCUS）产业链的关键环节和规模化开展离岸CCUS工程建设所需的核心技术本文明晰了我国实施离岸CCUS的优势、典型海洋碳运输情境和海洋CO2运输方式，剖析了国内外海洋CO2管道输送的技术与工程概况；从CO2流体相态及流动安全，沿程腐蚀风险评估、监测及预警，CO2泄漏实时监测技术

关键词： CO2管道；离岸CCUS；海底管道；管道腐蚀；管道断裂；泄漏监测

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Encapsulation of polyethylene glycol in cellulose-based porous capsules for latent heat storage and light-to-thermal

《化学科学与工程前沿（英文）》 2023年第17卷第8期页码 1038-1050 doi: 10.1007/s11705-022-2279-3

摘要： Phase change materials are potential candidates for the application of latent heat storage. Herein, we fabricated porous capsules as shape-stable materials from cellulose-based polyelectrolyte complex, which were first prepared using cellulose 6-(N-pyridinium)hexanoyl ester as the cationic polyelectrolyte and carboxymethyl cellulose as the anionic polyelectrolyte to encapsulate polyethylene glycol by the vacuum impregnation method. Furthermore, the multi-walled carbon nanotube or graphene oxide, which were separately composited into the polyelectrolytes complex capsules to enhance thermal conductivity and light-to-thermal conversion efficiency. These capsules owned a typical core–shell structure, with an extremely high polyethylene glycol loading up to 34.33 g∙g^‒1. After loading of polyethylene glycol, the resulted cellulose-based composite phase change materials exhibited high thermal energy storage ability with the latent heat up to 142.2 J∙g^‒1, which was 98.5% of pure polyethylene glycol. Further results showed that the composite phase change materials demonstrated good form-stable property and thermal stability. Moreover, studies involving light-to-thermal conversion determined that composite phase change materials exhibited outstanding light-to-thermal conversion performance. Considering their exceptional comprehensive features, innovative composite phase change materials generated from cellulose presented a highly interesting choice for thermal management and renewable thermal energy storage.

关键词： cellulose polyelectrolytes phase change materials thermal energy storage light-to-thermal conversion

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Can energy storage make off-grid photovoltaic hydrogen production system more economical?

《工程管理前沿（英文）》页码 672-694 doi: 10.1007/s42524-022-0245-x

摘要： Under the ambitious goal of carbon neutralization, photovoltaic (PV)-driven electrolytic hydrogen (PVEH) production is emerging as a promising approach to reduce carbon emission. Considering the intermittence and variability of PV power generation, the deployment of battery energy storage can smoothen the power output. However, the investment cost of battery energy storage is pertinent to non-negligible expenses. Thus, the installation of energy-storage equipment in a PVEH system is a complex trade-off problem. The primary goals of this study are to compare the engineering economics of PVEH systems with and without energy storage, and to explore time nodes when the cost of the former scenario can compete with the latter by factoring the technology learning curve. The levelized cost of hydrogen (LCOH) is a widely used economic indicator. Represented by seven areas in seven regions of China, results show that the LCOH with and without energy storage is approximately 22.23 and 20.59 yuan/kg in 2020, respectively. In addition, as technology costs drop, the LCOH of a PVEH system with energy storage will be less than that without energy storage in 2030.

关键词： hydrogen off-grid photovoltaic energy storage LCOH engineering economics

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Analysis of flow and heat transfer characteristics of porous heat-storage wall in greenhouse

OUYANG Li, LIU Wei

《能源前沿（英文）》 2008年第2卷第4期页码 406-409 doi: 10.1007/s11708-008-0094-2

摘要： The flow and heat transfer characteristics of porous heat-storage wall in greenhouse are studied by using the one-dimensional steady energy two-equation model for saturated porous medium. The results show that the heat exchange between the air and the solid matrix of the porous heat-storage wall depends upon the inlet air velocity, the porosity and the permeability of porous medium, and the thermal conductivity of the solid matrix. Because the incidence of solar radiation on the porous heat-storage wall is not uniform, the new composite porous solar wall with different porosity is proposed to reduce the disadvantageous effect.

关键词： incidence thermal conductivity heat-storage exchange composite

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Machine perfusion versus cold storage of livers: a meta-analysis

null

《医学前沿（英文）》 2016年第10卷第4期页码 451-464 doi: 10.1007/s11684-016-0474-7

摘要：

Different organ preservation methods are key factors influencing the results of liver transplantation. In this study, the outcomes of experimental models receiving donation after cardiac death (DCD) livers preserved through machine perfusion (MP) or static cold storage (CS) were compared by conducting a meta-analysis. Standardized mean difference (SMD) and 95% confidence interval (CI) were calculated to compare pooled data from two animal species. Twenty-four studies involving MP preservation were included in the meta-analysis. Compared with CS preservation, MP can reduce the levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT), lactate dehydrogenase (LDH), and hyaluronic acid (HA) and the changes in liver weight. By contrast, MP can enhance bile production and portal vein flow (PVF). Alkaline phosphatase (ALP) levels and histological changes significantly differed between the two preservation methods. In conclusion, MP of DCD livers is superior to CS in experimental animals.

关键词： machine perfusion cold storage DCD meta-analysis

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Experimental study and assessment of thermal energy storage mortar with paraffin/recycled brick powder

Luchen HAO; Jianzhuang XIAO; Wanzhi CAO; Jingting SUN

《结构与土木工程前沿（英文）》 2022年第16卷第10期页码 1301-1314 doi: 10.1007/s11709-022-0883-4

摘要： Thermal energy storage recycled powder mortar (TESRM) was developed in this study by incorporating paraffin/recycled brick powder (paraffin/BP) composite phase change materials (PCM). Fourier transform infrared and thermogravimetric analysis results showed that paraffin/BP composite PCM had good chemical and thermal stability. The onset melting temperature and latent heat of the composite PCM were 46.49 °C and 30.1 J·g⁻¹. The fresh mortar properties and hardened properties were also investigated in this study. Paraffin/BP composite PCM with replacement ratio of 0%, 10%, 20%, and 30% by weight of cement were studied. The results showed that the static and dynamic yield stresses of TESRM were 699.4% and 172.9% higher than those of normal mortar, respectively. The addition of paraffin/BP composite PCM had a positive impact on the mechanical properties of mortar at later ages, and could also reduce the dry shrinkage of mortar. The dry shrinkage of TESRM had a maximum reduction about 26.15% at 120 d. The thermal properties of TESRM were better than those of normal mortar. The thermal conductivity of TESRM was 36.3% less than that of normal mortar and the heating test results showed that TESRM had good thermal energy storage performance.

关键词： recycled powder mortar recycled brick powder thermal energy storage paraffin phase change material