WEBChemical looping gasifiion (CLG) is an innovative clean coal conversion technology with industrial appliion prospects. The technical reliability of coal CLG (CCLG) in an autothermal state remains to be investigated. To clarify the process characteristics of an autothermal CCLG process, a CCLG autothermal operation system was established .
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WEBJun 16, 2023 · Su, F. Q. et al. Evaluation of coal combustion zone and gas energy recovery for underground coal gasifiion (UCG) process. Energy Fuels 31, 154–169.
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WEBNov 5, 2022 · Energy generation from biomass through gasifiion has been a keen area of research for a long time. However, gasifiion still needs to overcome a significant number of challenges for its wider acceptability. Even though experimental works on labscale biomass gasifiers are available, computational modelling and simulations are .
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WEBApr 8, 2022 · Biomass gasifiion technology has an ancient and wellestablished background. The technology has widely been used to produce H2 and syngas which is subsequently upgraded to obtain valuable biofuels, Fischer–Tropsch chemicals and used in combined heat and power (CHP) plants. Abatement of tarrelated complexes with an .
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WEBJan 1, 2021 · Catalytic coal gasifiion for methane production is a promising technology in the clean coal utilization field. In this review, the technologies for coalderived natural gas production, the alytic coal gasifiion processes and the used reactors were compared. The compared alysts mainly included singlecomponent, composite, and ...
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WEBSep 1, 2022 · The high temperature promoted the coal gasifiion process with the maximum gasifiion efficiency and syngas yield corresponding to % and Nm3/ (kg• coal) respectively at gasifiion ...
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WEBThe efforts of the world research activities involved in clean coal technologies development focus to a considerable extent on integrated hydrogen and power generation technologies based on coal gasifiion. As an alternative to combustion processes, gasifiion offers increased efficiency, lower negative environmental impact as well as wider appliion .
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WEBUnderground coal gasifiion (UCG) is an industrial process which converts coal into product gas. UCG is an insitu gasifiion process, carried out in nonmined coal seams using injection of oxidants and steam. The product gas is brought to the surface through production wells drilled from the surface. The predominant product gases are methane, .
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WEBOct 30, 2023 · In this paper, the optimal process conditions for coal–biomass copyrolysis were obtained through pyrolysis experiments. The results show that under the condition of the pyrolysis temperature of 500 °C, the pyrolysis oil yield and positive synergistic effect reach the maximum, and the ratio of coal to biomass raw materials is 1:3. The effects of .
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WEBAs a result, coalfired power plant remains to be a fundamental element of the world's energy supply. IGCC, abbreviation of Integrated Gasifiion Combined Cycle, is one of the primary designs for the powergeneration market from coalgasifiion. This work presents a in the proposed process, diluted hydrogen is combusted in a gas turbine.
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WEBSep 15, 2022 · In this paper, a novel fusion method combining experimental testing and multiscale simulation is proposed to realize the highpurity production of synthesis gas (low CO 2 emission) through comprehensive optimization. Fig. 1 shows the prime steps in this proposal. The pyrolysis and gasifiion experiments of Meihuajing coal are carried out .
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WEBDec 1, 2019 · The validated model is further utilized to study the effects of process parameters such as temperature, pressure, Air/Coal (A/C) ratio and Steam/Coal (S/C) ratio on the gasifiion performance.
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WEBJun 1, 2023 · The IGCC system is composed of several subsystems,, air separation unit, coal gasifiion and purifiion unit, and gassteam combined cycle unit, and the previous studies are mainly focused on the process modelling and optimization of the whole system but neglect the interactions between the individual components.
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WEBJan 2, 2024 · This study proposed a twostage gasifiion (TSG) process of pulverized coal to allow for hydrogenrich (HR) production. The balance flow of this process is constructed using Aspen Plus software. Gasifiion pressure (GP), steamcoal ratio (SCR), and oxygencoal ratio (OCR) influences on the process are studied, and the .
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WEBJun 1, 2024 · Coal gasifiion slag (CGS) is a kind of solid waste generated in the coal gasifiion process, including coal gasifiion coarse slag (CGCS) and coal gasifiion fine slag (CGFS) [5]. The carbon content of CGCS is low, generally within 5 %. The carbon content of CGFS is high, generally about 20 %, and even more than 55 % in .
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WEBMar 25, 2020 · Biomass gasifiion has been the focus of research to estimate efficiency and performance of the gasifiion process using various types of biomass: sugarcane residue, rice hulls, pine sawdust, almond shells, almond, food waste, and woody biomass. Black liquor gasifiion has the potential to achieve higher overall energy efficiency .
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WEBJun 9, 2023 · Coal gasifiion is recognized as the core technology of clean coal utilization that exhibits significant advantages in hydrogenrich syngas production and CO2 emission reduction. This review briefly discusses the recent research progress on various coal gasifiion techniques, including conventional coal gasifiion (fixed bed, .
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WEBFeb 1, 2023 · The high temperature promoted the coal gasifiion process with the maximum gasifiion efficiency and syngas yield corresponding to % and Nm3/ (kg• coal) respectively at gasifiion ...
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WEBJan 1, 2013 · Gasifiion of coal is a process whereby coal is converted to a syngas, which is predominately a mixture of carbon monoxide and hydrogen. As shown schematically in Fig., syngas is a precursor to an extensive range of energy and chemical products: ...
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WEBJan 1, 2008 · A dynamic model of the Shell gasifier in an integrated coal gasifiion combined cycle (IGCC) is established based on physical principles, focusing on the timedependent accumulation and flow on the walls. ... Process design, simulation, optimization, and sustainability assessment for wastetowealth. Journal of Cleaner .
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WEBJan 21, 2020 · article{Kang2020ModelingAO, title={Modeling and Optimization for Gas Distribution Patterns on Biomass Gasifiion Performance of a Bubbling Spout Fluidized Bed}, author={Panxing Kang and Xiayi (Eric) Hu and Yujian Lu and Kuang Wang and Rui Zhang and Luchang Han and Haizhuan Yuan and Hongbo Chen and Xiao Luo and .
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WEBOne of the appliions of coal as a fuel is the production of gas through circulating fluidized bed technology. The modeling of these systems allows verifying and optimizing the design and operation parameters of gasifiers for analysis and improvement of gasifiion technologies. The present study applies the fundamentals of modeling a circulating .
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WEBMay 1, 2020 · The energy efficiency of coal water slurry (CWS) gasifiion is less than that of pulverized coal gasifiion, a preheating technology using shellandtube heat exchangers (STHXs) with ladder ...
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WEBMay 15, 2020 · Texaco coal gasifiion process is a typical wet feeding system, and Texaco entrained flow gasifiers are widely used, especially in Integrated Gasifiion Combined Cycle (IGCC) [25,26]. ... Experimental investigation and optimization of the gasifiion parameters of macadamia nutshells in a batchfed bubbling fluidized bed .
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WEBMar 5, 2010 · A particle swarm optimization (PSO)based algorithm was applied to optimize the gasifiion and DME production process. According to PSO results, the optimum operating conditions are 667 °C, 2 bar, and air ratio in the gasifiion process, while using reaction temperatures of 400 and 100 °C in the DME reactors .
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WEBJul 15, 2018 · A flowsheet of the studied coal to ethylene glycol (CtEG) process is shown in Fig. CtEG process is complied but mainly consists of a few basic units: air separation unit (ASU), coal gasifiion (CG), water gas shift (WGS), gas separation and purifiion (GSP), sulfur recovery (SR), dimethyl oxalate synthesis (DMOS), ethylene .
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WEBJan 1, 2021 · A model of entrainedflow coal gasifier (1920 t/d and single nozzle) was established to simulate the gasifiion process of pulverized coal from Ningxia of China on the basis of the ANSYS/FLUENT.
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WEBJun 15, 2021 · An improved optimization method combining an improved particle swarm optimization algorithm (IPSO) and an adaptive penalty function is proposed, which can adaptively recommend the best combination of process parameters according to the dynamic incoming characteristics of the tobacco leaf, to reduce the deviation in the .
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WEBFeb 15, 2023 · Herein, the process scaleup route of multiscale coal and biomass chemical looping cogasifiion (CLCG) is established using a thermogravimetric analyzer, a batch bubbling fluidized bed, and an MW th scale industrial demonstration unit. The positive synergistic effect is most notable at a bituminous coal blending ratio of 70%.
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WEBMay 7, 2021 · The results of the study indied that the gasifiion process is an appropriate treatment for obtaining highquality syngas from waste materials with high carbon and low moisture content and the Box–Behnken design was successfully applied in the optimization of the gasifiion process.
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WEBOct 11, 2023 · To investigate the biomass waste gasifiion process, modeling approaches and simulation software provide useful tools to investigate different operative conditions to achieve a first raw optimization of the process, obtaining the most suitable syngas for the desired uses and scaling up of labscale and pilot apparatus.
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WEBAug 1, 2015 · Support Vector Machine Algorithm is used to estimate oxygen–steam ratios in coal gasifiion process. • The coupled simulated annealing optimization tool obtains the optimal model parameters. • The model has been developed and tested using 100 series of the data. • Excellent agreement between the results of model and reported data .
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