In SCWG of coal process, the gasification product mainly consists of H 2, CO 2, CH 4, CO, ... This work will provide theoretical guidance for the process design and optimization of the ISSCWBPG. Proposal and investigation of a highefficiency coalfired power generation system enabled by chemical recuperative supercritical water coal gasification.
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Firstly, through the analysis of the simulation results of the threestage coal gasification furnace, it is found that there is room for improvement in the coal gasification process. And then, the coal gasification process is transformed from the structure and. Further modification of the system. The optimization and improvement of coal ...
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Feeding variability appears extensively in phenol and ammonia recovery process of coal chemical plant, which has caused severe problems in effluent quality. This study is aim to take the feeding variability into consideration for process optimization and analysis of the phenol and ammonia recovery process, have been not studied in previous efforts.
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The thermoeconomic optimization of the improved gasification process with CWS preheating technology using multiobjective optimization is a tradeoff between cold gas efficiency and total cost. The MOGA is conducted to maximize CGE and minimize C tot generating 100 samples initially and 100 samples per iteration. As the convergence criterion ...
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Then, optimization study using modelling software, life cycle assessment, and circular economy is inevitable. Finally, sufficient funding is required for commercialization. ... Aquatic risk assessment based on the results of research on mine waters as a part of a pilot underground coal gasification process. Process Saf Environ 148:548558 ...
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The optimization study is performed by a numerical optimization using the DesignExpert 11 software. The goal is to depict the optimum conditions for maximizing H 2, CO, CGE and CC from SPL gasification process. The optimum operating conditions for SPL gasification process are tabulated in Table 8. The selected simulation solution is the one ...
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Gasification agents with different oxygen concentrations directly affect the temperature of the gasification area, while the UCG process is a selfheat balance process [20]. The heat generated by combustion is conducive to establishing the ideal temperature field of the underground gasifier and leads to a reduction reaction and decomposition ...
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By parameter optimization and process integration, ... For coal gasification, the pure oxygen is derived from air separation unit, which mainly uses cryogenic separation technology in coalbased chemicals and power plants. The cryogenic separation process is mature and capital intensive; however, it typically brings high energy consumption and ...
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Gasification 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). Gasification 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 causing a series of chemical reactions to ...
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In this work, the technoeconomic and exergy analyses of two gasification technologies with integration into heat and power combined cycles are presented: i). Circulating fluidized bed (CFB) and ii). Dual fluidized bed (DFB) systems. As feedstock, lignocellulosic biomass (sugarcane bagasse, SCB) was considered. The gasification process of the fluidizedbed systems (circulating and dual bed ...
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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 application of chemical looping technology in coal gasification to produce high purity synthesis gas is an important way to achieve CO 2 emission reduction, ensure energy security, and promote ...
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Methanol is a clean fuel and an important feedstock for the petrochemical industry. Conventionally, the coaltomethanol process generates a substantial amount of CO2 emissions with a low yield of methanol. In this study, we propose the conceptual design development of coaltomethanol process using captured CO2 from the gasification plant by implying process intensification. The base case and ...
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Optimization of an advanced coalfired integrated gasification combined cycle system requires an accurate numerical prediction of gasifier performance. While the turbulent multiphase reacting flow inside entrainedflow gasifiers has been modeled through computational fluid dynamic (CFD), the accuracy of submodels requires further improvement.
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Underground coal gasification (UCG) is a clean coal mining technology without significant environmental impacts. This technology can also be used in deep, hardtoreach seams or deposits affected by tectonic disturbances, where conventional mining is impossible. Several techniques and methods have been investigated worldwide to support the process control of UCG. Global research focuses on the ...
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Biomass gasification is an attractive technology and one of the pathways for producing hydrogen. Due to the variable seasons and low calorific value of biomass, the addition of coal in the gasifier is suggested because coal has a high calorific value and carbontohydrogen ratio. In general, the gaseous product obtained in gasification always contains a high amount of carbon dioxide, therefore ...
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The rest of this article proceeds as follows: The SCGP is briefly introduced in Section operation optimization model is established in Section validate the effectiveness of the proposed model, an industrial coal gasification process is studied and the optimization result is analyzed in Section article is ended with a conclusion in Section 5.
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The mathematical model used to study the entrained flow coal gasification process is based on the commercial CFD software Ansys Fluent [70] which incorporates the finitevolume method. ... Coal gasification results. The optimization of global devolatilization models was performed through the iterative procedure. Hence, the simulation results ...
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The entrainedbed coal gasification process is the cleanest and most efficient coal gasification technology (Fan 2013; Liu et al. 2010; Wang 2014). ... Improvement of adsorbent performance, technique process design and adsorption bed structure optimization are all necessary at this stage.
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The robustness of the efficient syngas (ES, H 2 + CO) fraction in an entrained flow coal gasification is very important to the stable operations of some downstream applications. This study presents the details about the robust optimization of the ES fraction in a typical entrained flow coal gasification, Shell coal gasification process (SCGP).
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In the coal gasification process of converting coal to SNG, coal is gasified with steam and oxygen. The gasification process produces carbon monoxide (CO), hydrogen (H 2), carbon dioxide (CO 2), methane (CH 4), and higher hydrocarbons such as ethane and propane [5]. Methanation reaction is the main process of converting coal to gas.
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Coal gasification is an efficient, clean and versatile process, which can be adapted for producing hydrogen [2]. The comparison of different technologies as well as the
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Keywords: Mini g, Gasification, Pr cess control, Process optimization, Real time optimization. ï€ 1. INTRODUCTION Coal is the most abundant and widespread type of fossil fuel, with reserves of economically recoverable coal estimated to be about 900 gigatons (GT), 64% of major fossil fuels. ... Ji, P., Gao, X., Huang, D., and Yang, Y. (2013 ...
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1. Introduction. China is the world's largest producer and consumer of coal, and coal remains fundamental to China's energy and chemical industries [1].The modern coal chemical industry requires an effective approach to improve the efficient utilization level of coal and achieving the transformation of coal from a monofuel to an equal emphasis on fuel and raw materials, as it is ...
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Ju and Lee (2017) analyzed the energy efficiency of the coal gasification process in a shell gasifier for five different coals using a rigorous dynamic model. According to the obtained results, the performance of subbituminous gasification was considerably high in the shell gasifier regarding the lower energy density of subbituminous coals.
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Coal Gasification. Nicola J. Wagner, ... van Dyk, in Applied Coal Petrology, 2008 Publisher Summary. This chapter deals with coal gasification, which is a process that converts carbonaceous materials, such as coal, petroleum, petroleum coke, or biomass, into carbon monoxide and gasification as a powergeneration technology is gaining popularity due to the ready global ...
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