Modeling, thermodynamic and techno-economic analysis of coal-to-liquids process with different entrained flow coal gasifiers

Qin, Shiyue; Chang, Shiyan; Yao, Qiang

doi:10.1016/j.apenergy.2018.07.030

Cited by 62 publications

(13 citation statements)

References 83 publications

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“…Therefore, the H 2 /CO ratio has to be adjusted to be about 2.0 by the water gas shift reaction, as shown in Equation (1). Two equilibrium reactors are used to model this reaction for a high conversion of syngas [21]. In addition, a number of coolers and heat exchangers are used to generate saturated steam.…”

Section: Water Gas Shift Unitmentioning

confidence: 99%

Comparative Investigation of Different CO2 Capture Technologies for Coal to Ethylene Glycol Process

Liao

et al. 2021

Processes

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The coal to ethylene glycol (CTEG) process has drawn much attention due to the serious conflict between supply and demand of ethylene glycol in China. However, it is inevitably accompanied by the problem of high CO2 emissions. Carbon capture is one of the most promising potential effective ways to address this issue. However, the CTEG process, integrated with carbon capture technology, will lead to energy and economic penalties. Thus, a comprehensive evaluation of CTEG process with different CO2 capture technologies is urgently needed. This study analyzed the technoeconomic performance of four CO2 capture alternatives for the CTEG process: Rectisol, mono-ethanol amine (MEA), chilled ammonia process (CAP) and dimethyl carbonate (DMC) technologies. Results show the energy consumption of CO2 capture of the Rectisol process is the lowest, 1.88 GJ/tCO2, followed by the DMC process, 2.10 GJ/tCO2, the CAP process, 3.64 GJ/tCO2, and the MEA process, 5.20 GJ/tCO2. The CO2 capture cost of the Rectisol process is lowest, CNY 169.5/tCO2, followed by the DMC process, CNY 193.2/tCO2, the CAP process CNY 232.6/tCO2, and the MEA process CNY 250.5/tCO2. As the Rectisol technology has the best comprehensive performance, it is the best option for CTEG industry in comparison with the MEA, CAP, and DMC technologies.

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Section: Water Gas Shift Unitmentioning

confidence: 99%

Comparative Investigation of Different CO2 Capture Technologies for Coal to Ethylene Glycol Process

Liao

et al. 2021

Processes

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“…For those states where only water is present, the chemical exergy of flow is taken with a fixed value of 49.96 kJ/kg, according to [34,35]. Since the LiBr-H 2 O solution is not ideal, the exergy of the chemical flow for the solution is a function of the standard activities and exergies of the pure species, as represented below:…”

Section: Property Input Variable Range Referencementioning

confidence: 99%

“…This tool also features specific analysis for detailed performance information for fixed conditions and parametric analysis for conditions where external streams temperatures vary. The modeling of this tool is based on the model presented [33,34].…”

Section: Matlab App Designer Applicationmentioning

confidence: 99%

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A New Computational Tool for the Development of Advanced Exergy Analysis and LCA on Single Effect LiBr–H2O Solar Absorption Refrigeration System

et al. 2021

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A single effect LiBr–H2O absorption refrigeration system coupled with a solar collector and a storage tank was studied to develop an assessment tool using the built-in App Designer in MATLAB®. The model is developed using balances of mass, energy, and species conservation in the components of the absorption cooling system, taking into account the effect of external streams through temperature and pressure drop. The whole system, coupled with the solar energy harvesting arrangement, is modeled for 24 h of operation with changes on an hourly basis based on ambient temperature, cooling system load demand, and hourly solar irradiation, which is measured and recorded by national weather institutes sources. Test through simulations and validation procedures are carried out with acknowledged scientific articles. These show 2.65% of maximum relative error on the energy analysis with respect to cited authors. The environmental conditions used in the study were evaluated in Barranquilla, Colombia, with datasets of the Institute of Hydrology, Meteorology and Environmental Studies (IDEAM), considering multiannual average hourly basis solar irradiation. This allowed the authors to obtain the behavior of the surface temperature of the water in the tank, COP, and exergy efficiency of the system. The simulations also stated the generator as the biggest source of irreversibility with around 45.53% of total exergy destruction in the inner cycle without considering the solar array, in which case the solar array would present the most exergy destruction.

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“…Coal can be fed to the gasifier as dry or as slurry [36]. In the entrained flow gasifier, the dense solid or liquid phase particles are dispersed into a moving gaseous medium, whereby the particles are entrained along the bed.…”

Section: Introductionmentioning

confidence: 99%

Çan Kömürü Gazlaştırılmasının Sürüklemeli Akış Gazlaştırıcıda Aspen PLUS® Kullanılarak İncelenmesi

Kartal¹,

Cingisiz²,

Özveren³

2021

Deu Muhendislik Fakultesi Fen Ve Muhendislik

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Excessive consumption of fossil fuels due to energy demand leads to an increase in the amount of CO2 emitted to the environment. Gasification technology enables clean and efficient use of fossil fuels such as coal, which cause CO2 emissions predominantly. Gasification can be utilized under several atmospheres such as air, steam, O2/CO2 mixture, etc. The reduction of inert gases (N2) and the increase of CO concentration at high temperatures in syngas provides high-quality gas. Among the commercial gasifiers, entrained flow gasifiers have many advantages such as obtaining tar-free synthesis gas, high carbon conversion efficiency, and production in high capacities. In addition, there is no limitation to the type of coal to be used. The performance of the entrained flow gasifiers can be examined by simulation programs and design optimization can be performed at a low cost. This study aims to develop a new entrained flow gasifier model for Turkish Lignite (Çan coal) using the Aspen Plus ® thermodynamic simulation program and the effects of various parameters on the synthesis gas were investigated by sensitivity analysis.

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Modeling, thermodynamic and techno-economic analysis of coal-to-liquids process with different entrained flow coal gasifiers

Cited by 62 publications

References 83 publications

Comparative Investigation of Different CO2 Capture Technologies for Coal to Ethylene Glycol Process

Comparative Investigation of Different CO2 Capture Technologies for Coal to Ethylene Glycol Process

A New Computational Tool for the Development of Advanced Exergy Analysis and LCA on Single Effect LiBr–H2O Solar Absorption Refrigeration System

Çan Kömürü Gazlaştırılmasının Sürüklemeli Akış Gazlaştırıcıda Aspen PLUS® Kullanılarak İncelenmesi

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