A process optimization method has been developed and applied to study the coal gasification for the production of hydrogen. The boundary definition and the identification of main units
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In the entrained flow coal gasification process, the gas production is critically affected by the operating temperature (OT) and coal ash melting point (AMP), and the AMP is one of key factors for ...
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The process flowsheet of the coal gasification 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 gasification process based on Aspen Plus ...
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Nexant completed the first two tasks (Tasks 1 and 2) of the ''Gasification Plant Cost and Performance Optimization Study'' for the DOE's National Energy Technology Laboratory (NETL) in 2003. These tasks evaluated the use of the EGAS {trademark} gasification technology (now owned by ConocoPhillips) for the production of power either alone or ...
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1. Introduction. Coal gasification is a process in which coal reacts with gasification 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 gasification is an important way to achieve the clean and ...
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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 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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Advanced char conversion models are capable of predicting char consumption by oxidation and gasification. The following section presents two approaches used to integrate such advanced char conversion kinetics into CFD, namely SNOR and SNOI [ 108, 128 ]. SNOR stands for "single nth order reaction".
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Gasification fine slag (GFS) is the waste produced in the coal gasification process, its production and storage volume are increasing with the largescale promotion of coal gasification technology. Currently, the GFS black water is processed by the horizontal belt filter and the moisture content of the obtained filter cake exceeds 50%, which ...
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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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Coal gasification is a versatile process to convert a solid fuel in syngas, which can be further converted and separated in hydrogen, which is a valuable and environmentally acceptable energy carrier. Different technologies (fixed beds, fluidized beds, entrained flow reactors) are used, operating under different conditions of temperature, pressure, and residence time. Process studies should be ...
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A framework is proposed for integration of unit modeling, process synthesis, analysis, optimization, and process design of coal gasificationbased energy and chemical processes. The conceptual models of these processes are built by the modeling and synthesis blocks in the framework, which are the bases of analysis and optimization. A number of analysis techniques are employed in the framework ...
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The underground coal gasification (UCG) technology converts coal into product gas and provides the option of environmentally and economically attractive coal mining. Obtained syngas can be used for heating, electricity, or chemical production. Numerous laboratory coal gasification trials have been performed in the academic and industrial fields. Labscale tests can provide insight into the ...
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Abstract. After successful completion of the demonstration phase on Illinois No. 5 coal, SCGP1, the Coal Gasification plant at Dee Park Texas, entered the coal feedstock phase, with the primary focus on gasifying a wide variety of coals, and a parallel experimental phase for process optimization and confirmation of several process improvements.
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Owing to China's unique energy structure, more than 97% of its ammonia is produced through coal gasification (Xiang and Zhou, 2018). However, the air separation system, which consumes a large amount of energy, provides pure oxygen and needs to separate CO 2 and H 2. This results in a high energy consumption in the gasification process.
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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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The coalgasification wastewater treatment is the most difficult pollution control task for coalgasification plants. It is identified that there are two serious problems occurring in the current treatment process,, low performance of phenols removal and plugging induced by ammonia salts. A new treatment process is proposed in this paper to solve these severe problems and pursue clean ...
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When designing the coal gasification process, use the RGibbs model [16] or other models to simplify the coal gasifier in one dimension, ... Structural optimization of coal gasification furnace. The height of the gasifier studied in this paper is m. The prototype gasifier has only one set of four opposed nozzles, which leads to the uneven ...
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This process is detailed modeled by dividing it into coal gasification, water gas shift, acid gas removal, dimethyl oxalate synthesis, ethylene glycol synthesis, and ethylene glycol refining units. After comparing and verifying with literature and industrial data, this work conducts a detailed advanced exergy analysis and optimization of the ...
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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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A material supplier from Belgium would like to produce limestone powder for his custome...
India is rich in various mineral resources and it is an important mineral processing market
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