Low-carbon biomass-fueled integrated system for power, methane and methanol production

In facing with increasingly serious climate and energy crisis, the society came across with contradictions of environmental crisis and economic development. As to the solution, the development of low-carbon economy is an effective one. By analyzing the tendency of global economic and the necessity of low-carbon agriculture in China, the author raises the opinion that to build low-carbon synthetically integrated system with the agricultural enterprises as the core unit, together with main associations in the industry and synergetic associations in environment, and this is an important way for agricultural enterprises to fulfill their strategic transformation and to achieve sustainable growth. In this paper, theories and integration elements of this system will be analyzed and conceptual model will be constructed and analyzed.

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Permaculture: Tools for Making Women’s Lives More Abundant

Feminist Theology ◽

10.1177/0966735017693769 ◽

2017 ◽

Vol 25 (3) ◽

pp. 240-247

Author(s):

Maddy Harland

Keyword(s):

Great Plains ◽

Ground Cover ◽

Initial Response ◽

Integrated System ◽

Low Carbon ◽

Tree Crops ◽

Women's Lives ◽

The Usa ◽

Productive Systems ◽

European Agriculture

Permaculture is primarily a thinking tool for designing low carbon, highly productive systems. It originated in Australia in the 1970s and was conceived by Bill Mollison and David Holmgren as a response to the devastating effects of a temperate European agriculture on the fragile soils of an ancient antipodean landscape. Like the dust bowls of the Great Plains in the USA in the 1930s, an alien agriculture has the capacity to turn a delicately balanced ecology into desert. Their initial response was to design a permanent agriculture with tree crops and other perennials inhabiting all the niches from the canopy to the ground cover and below. The soil is left untilled to establish its own robust micro-ecology. Key to this is that the land must be biodiverse and stable for future generations. From perennial tree crops, permaculture has developed into an integrated system of design that encompasses everything from agriculture, horticulture, architecture, and ecology, as well as economy and legal systems for businesses and communities.

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Techno-Environmental Analysis of the Use of Green Hydrogen for Cogeneration from the Gasification of Wood and Fuel Cell

Sustainability ◽

10.3390/su13063232 ◽

2021 ◽

Vol 13 (6) ◽

pp. 3232

Author(s):

Abigail Gonzalez-Diaz ◽

Juan Carlos Sánchez Ladrón de Guevara ◽

Long Jiang ◽

Maria Ortencia Gonzalez-Diaz ◽

Pablo Díaz-Herrera ◽

...

Keyword(s):

Fuel Cell ◽

Rural Areas ◽

Geographical Location ◽

Experimental Information ◽

Cell System ◽

Combined Cycle ◽

Integrated System ◽

Carbon Intensity ◽

Low Carbon ◽

Wood Biomass

This paper aims to evaluate the use of wood biomass in a gasifier integrated with a fuel cell system as a low carbon technology. Experimental information of the wood is provided by the literature. The syngas is purified by using pressure swing adsorption (PSA) in order to obtain H2 with 99.99% purity. Using 132 kg/h of wood, it is possible to generate 10.57 kg/h of H2 that is used in a tubular solid oxide fuel cell (TSOFC). Then, the TSOFC generates 197.92 kW. The heat generated in the fuel cell produces 60 kg/h of steam that is needed in the gasifier. The net efficiency of the integrated system considering only the electric power generated in the TSOFC is 27.2%, which is lower than a gas turbine with the same capacity where the efficiency is around 33.1%. It is concluded that there is great potential for cogeneration with low carbon emission by using wood biomass in rural areas of developing countries e.g., with a carbon intensity of 98.35 kgCO2/MWh when compared with those of natural gas combined cycle (NGCC) without and with CO2 capture i.e., 331 kgCO2/MWh and 40 kgCO2/MWh, respectively. This is an alternative technology for places where biomass is abundant and where it is difficult to get electricity from the grid due to limits in geographical location.

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A Low-Carbon Dispatch Model in a Wind Power Integrated System Considering Wind Speed Forecasting and Energy-Environmental Efficiency

Energies ◽

10.3390/en5041245 ◽

2012 ◽

Vol 5 (4) ◽

pp. 1245-1270 ◽

Cited By ~ 4

Author(s):

Daojun Chen ◽

Qingwu Gong ◽

Bichang Zou ◽

Xiaohui Zhang ◽

Jian Zhao

Keyword(s):

Wind Speed ◽

Wind Power ◽

Environmental Efficiency ◽

Integrated System ◽

Low Carbon ◽

Wind Speed Forecasting

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Key technologies of low carbon design integrated system for typical automobile parts

Journal of Computational Methods in Sciences and Engineering ◽

10.3233/jcm-191017 ◽

2019 ◽

Vol 19 ◽

pp. 115-122

Author(s):

Chuan Feng

Keyword(s):

Integrated System ◽

Low Carbon ◽

Key Technologies ◽

Automobile Parts

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Research on complex integrated energy planning and operation optimization

MATEC Web of Conferences ◽

10.1051/matecconf/202133605025 ◽

2021 ◽

Vol 336 ◽

pp. 05025

Author(s):

Zhou Wen ◽

Liang Meng ◽

Zhengfu Yang ◽

Zhibin Liu ◽

Yajing Liu

Keyword(s):

Energy System ◽

Integrated System ◽

Energy Planning ◽

Utilization Rate ◽

Stable Operation ◽

Low Carbon ◽

Energy System Model ◽

Integrated Energy System ◽

Scheduling Method ◽

The Stability

The safe and stable operation of the energy system is the top priority of the world in the industrial field. The energy integrated system optimizes the system through multiple channels and cascade utilization of energy, which greatly improves the utilization rate of energy and provides a convenient way for the development of low-carbon society. In this paper, the composite integrated energy system model is constructed through the analysis of the structure of the integrated energy system. On this basis, a coordinated optimal scheduling method for integrated energy system with multiple energy stations is proposed, which takes the system operation economy as the goal. The case simulation results show that the coordinated operation of energy stations can greatly improve the stability and economy of the hybrid integrated energy system.

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Optimal Low-Carbon Economic Environmental Dispatch of Hybrid Electricity-Natural Gas Energy Systems Considering P2G

Energies ◽

10.3390/en12071355 ◽

2019 ◽

Vol 12 (7) ◽

pp. 1355 ◽

Cited By ~ 4

Author(s):

Jing Liu ◽

Wei Sun ◽

Gareth Harrison

Keyword(s):

Natural Gas ◽

Gas Turbines ◽

Gas Flow ◽

Trust Region Method ◽

Trust Region ◽

Optimization Method ◽

Integrated System ◽

Low Carbon ◽

Synthetic Natural Gas ◽

Network Constraints

Power to gas facilities (P2G) could absorb excess renewable energy that would otherwise be curtailed due to electricity network constraints by converting it to methane (synthetic natural gas). The produced synthetic natural gas can power gas turbines and realize bidirectional energy flow between power and natural-gas systems. P2G, therefore, has significant potential for unlocking inherent flexibility in the integrated system, but also poses new challenges of increased system complexity. A coordinated operation strategy that manages power and natural-gas network constraints together is essential to address such challenges. In this paper, a novel low-carbon economic environmental dispatch strategy is presented considering all the constraints in both systems. The multi-objective black-hole particle swarm optimization algorithm (MOBHPSO) is adopted. In addition to P2G, a gas demand management strategy is proposed to support gas flow balance. A new solving approach that combines the effective redundancy method, trust region method, and Levenberg-Marquardt method is proposed to address the complex coupled constraints. Case studies that use an integrated IEEE 39-bus power and Belgian high-calorific 20-node gas system demonstrate the effectiveness and scalability of the proposed model and optimization method. The analysis of dispatch results illustrates the benefit of P2G for the wind power accommodation, and low-carbon, economic, and environmental improvement of integrated system operation.

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Evaluation of Low-Carbon Competitiveness Based on a System Evaluation Method: A Case Study of Three Chinese Steel Companies

Mathematical Problems in Engineering ◽

10.1155/2021/6664216 ◽

2021 ◽

Vol 2021 ◽

pp. 1-13

Author(s):

Jiang Yuguo ◽

Dennis Asante ◽

Chen Dan ◽

Zhang Jie

Keyword(s):

Evaluation Method ◽

Intangible Assets ◽

Environmental Conservation ◽

Integrated System ◽

Evaluation Index System ◽

Three Dimensions ◽

Green Economy ◽

Intangible Asset ◽

Low Carbon ◽

Emission Mitigation

Low-carbon competitiveness is an effective way for enterprises to remain relevant in the global green economy agenda. The low-carbon footprints of firms are not only reflected in their carbon-tangible assets but also in carbon-intangible assets. Thus, carbon-intangible assets also play a crucial role in firms’ emission mitigation and environmental conservation capacity. Several forms of carbon-intangible assets may constitute an integrated system that shapes the low-carbon performance of enterprises. Therefore, firms’ low-carbon competitiveness can be evaluated by studying the distribution of individual carbon-intangible resources and the composite shape of such assets. Based on this idea, this paper explored the dimensions through which carbon-intangible assets contribute to low-carbon competitiveness. By determining the location and distribution of each carbon-intangible asset in its value space, we proposed a multidimensional evaluation technique with three dimensions including realistic, sustainable, and inimitable value. Herein, the idea of value space of carbon-intangible assets has been contributed to the extant literature. Finally, to apply our evaluation index system, we selected three Chinese steel companies to serve as the research sample and evaluated their low-carbon performances. The main contribution of this study is the development and application of a novel multidimensional low-carbon evaluation method. This technique will not only help governments as well as the academics to effectively determine the low-carbon level of enterprises but also helps managers to fully grasp the trends of low-carbon competitiveness and thereby take some targeted measures to improve their firms’ performance.

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Switchable Structure Promoted Leaching Free Atomically Dispersed Pt Catalyst for Low Carbon Biomass Polyol Oxidation

10.21203/rs.3.rs-952185/v1 ◽

2021 ◽

Author(s):

Hao Yan ◽

Mingyue Zhao ◽

Xin Zhou ◽

Siming Zhao ◽

Shangfeng Li ◽

...

Keyword(s):

Density Functional ◽

Density Functional Theory Calculation ◽

Pt Catalyst ◽

Catalyst Stability ◽

Grand Challenge ◽

Low Carbon ◽

Hydroxy Acids ◽

Carbon Biomass ◽

Coordination Effect

Abstract Achieving efficient catalytic conversion over heterogeneous catalyst with excellent resistance against leaching is still a grand challenge for sustainable chemical synthesis in aqueous solution. Herein, we devised a leaching free atomically dispersed Pt1/hydroxyapatite (HAP) catalyst with unique switchable structure via a simple and green in-situ anchoring strategy. Gratifyingly, this robust Pt1/HAP catalyst exhibits remarkable catalytic selectivity and catalyst stability for the selective oxidation of C2-C4 bio-polyols (e.g., ethylene glycol, propanediol, glycerol and butanediol) to corresponding primary hydroxy acids. X-ray absorption spectroscopy, in-situ Fourier Transform infrared spectroscopy, density functional theory calculation and kinetics study elucidated that the switchable Pt-(O-P) linkages with strong electronic-withdrawing function of PO43− (Pt1-OPO43− active site) not only realize the activation of C-H bond, but also destabilize the transition state from adsorbed hydroxy acids toward the C-C cleavage, resulting in the sharply increased selectivity of hydroxy acids. Moreover, the strong PO43−-coordination effect, originating from the enhanced interaction between positively charged Pt1 and negatively charged OPO43−, provides electrostatic stabilization for the atomically dispersed Pt, ensuring the highly efficient catalysis of Pt1/HAP for over 160 hours without metal leaching. This finding opens up new opportunities for efficient upgrading of bio-polyols over atomically dispersed catalysts.

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