WEBJun 1, 2015 · Abstract. This study develops a novel mathematical model which simultaneously optimizes the key operating parameters of a heat integrated coal gasifiion process to achieve maximum economic profit. It has been proved that, at above 1400 K, the operating conditions that maximize the profit automatically lead to .
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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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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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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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WEBMay 30, 2024 · As illustrated in Fig. 18, the optimized IGCC system gasifiion process exergy efficiency increased by %, and due to the improvement of the optimization process, yet the gas turbine unit, the waste heat boiler unit and the total exergy efficiency have been improved, indiing that the optimization method is beneficial to increasing .
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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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WEBJan 1, 2020 · This paper presents a study conducted on robust modeling, analysis and optimization of an entrained flow petcokecoal cogasifiion process based on the general experiment carried out by Vejahati et al. [12]. In their work, all experiment factors were assumed to be equally well controllable, and the deterministic RSM models were .
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WEBThe process flowsheet of the coal gasifiion process in a downdraft fixedbed gasifier using air as an oxidant is shown in Figure 1. The ... In order to provide the performance data of the integrated Biomass to Liq. system and future process optimization, a comprehensive model of the downdraft biomass gasifiion process based on Aspen .
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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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WEBFeb 1, 2022 · Introduction. Coal gasifiion is a process in which coal reacts with gasifiion agents (, steam, O 2 /air, and CO 2) at a certain temperature and pressure to produce clean synthesis gas, which can be used as gaseous fuel or as a raw material for chemical synthesis to produce various chemical products and liquid .
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WEBNov 19, 2012 · A framework is proposed for integration of unit modeling, process synthesis, analysis, optimization, and process design of coal gasifiionbased energy and chemical processes.
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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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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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WEBDec 1, 2023 · As the leading industry of coal chemical industry, Coal gasifiion plays an important role in efficient and clean utilization of coal. It is a process in which solid fuels such as coal, coke, or semicoke react with gasifying agents under high temperature and pressure to produce gaseous products and a certain amount of slag (Aprianti et al., .
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WEBJan 6, 2021 · The present research work proposes an optimization procedure using Taguchi method and utility concept with the main objective of maximizing the calorific value of syngas with lower CO2 yield during coal gasifiion process using thermodynamic equilibrium model based on stoichiometric approach. After validating the model with .
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WEBApr 1, 2017 · 1. Introduction. Reliable feeding of pulverized coal into the gasifier is of great importance for coal gasifiion with the pressurized entrainedflow process (Guo et al., 2012).During feeding into the gasifier, any fluctuation of coal mass flow rate will affect the oxygen carbon ratio directly and as a result, affect the index of gasifiion .
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WEBNov 1, 2015 · The appliion of DFOA on gasifiion process operation optimization. Coal gasifiion technology is being developed worldwide for a more efficient and clean use of coal with substantially reduced carbon dioxide and pollutant gas emissions [25]. Entrainment flow coal gasifiion is regarded as a practical coalutilizing technology .
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WEBFeb 5, 2018 · The detailed optimization problem definition is listed in Table 3 with the optimization objective, the. Conclusions. To explore the performance potential of a directfired supercritical CO 2 power cycle that couples to coal gasifiion process, a systematic optimization method is applied in this study. By utilizing a black box heat .
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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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WEBJan 1, 2023 · The samples in this study are raw coal (RC) and dry ash (DA) from China's 40,000 Nm 3 /h atmospheric circulating fluidized bed gasifiion plant. The gasifiion temperature is about 980 ℃, the coal feeding amount is t/h, the coal temperature into the gasifier is 80 ℃, and the gasifying agent flow is kg/ samples are labeled .
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WEBDec 6, 2022 · A heat integration optimization method that considers the changes in process parameters is proposed to find the global optimal process scheme for a coal chemical company's phenols and ammonia recovery process. The phenols and ammonia recovery process is simulated by Aspen Plus, and a programming method for heat .
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WEBGasifiion is a technological process that can convert any carbonaceous (carbonbased) raw material such as coal into fuel gas, also known as synthesis gas (syngas for short). Gasifiion occurs in a gasifier, generally a high temperature/pressure vessel where oxygen (or air) and steam are directly contacted with the coal or other feed material .
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WEBSep 15, 2022 · Carbon dioxide (CO 2) emission reduction has become an urgent topic to be studied and solved with the indepth understanding of global warming and frequent occurrence of extreme present, the appliion of chemical looping technology in coal gasifiion to produce high purity synthesis gas is an important way to achieve .
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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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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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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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WEBMar 15, 2023 · Gasifiion and water gas shift process is simulated according to the flowsheet presented in Fig. the feeding, coal and biomass are defined as nonconventional components [15, 18], and the proximate and ultimate analysis results in Table 1 are used as input parameters to define the raw material needs to be .
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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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WEBWabash River Coal Gasifiion Repowering Project – operating commercially since 1995, reaching % plant availability, and 76% gasifier availability. Great Plains Synfuels Plant – operating since 1984, % days with production (, notzero production), although this is not traditionally how availability is measured.
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