Comparison of BGL and Lurgi gasification for coal to liquid fuels (CTL): Process modeling, simulation and thermodynamic analysis

Qin, Shiyue; Zhang, Xuzhi; Wang, Ming; Cui, Hongyou; Li, Zhihe; Yi, Weiming

doi:10.1016/j.energy.2021.120697

Cited by 12 publications

(6 citation statements)

References 48 publications

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“…Additionally, the evidence shows that the higher the PCR, the lower the H2 content in the syngas produced from SRV. The H2 contents in the syngas of Lurgi and British Gas Lurgi coal gasification processes are approximately 40% and 25% [8], respectively. It can be seen that this process has significant improvements in hydrogen enrichment.…”

Section: Effect Of Pcr Of Srv Off-gasmentioning

confidence: 98%

“…Compared to Lurgi, British Gas Lurgi technology is capable of operating under a higher temperature, thus resulting in a better gasification efficiency. The effective gas composition of CO and H 2 in the syngas produced by Lurgi technology ranges from 54% to 68%, and the effective gas composition of CO and H 2 obtained from British Gas Lurgi technology is lower than 85% [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…For the hydrogen-rich process, the volume and composition of syngas generated in each zone are calculated using the same method as shown in Equations ( 5)- (8). When steam partially replaces O 2 as the gasifying agent, coal gasification changes from an exothermic reaction to an endothermic reaction [37].…”

mentioning

confidence: 99%

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Mathematical Modeling for the Process of Smelting Reduction Ironmaking Integrated with Hydrogen-Rich Coal Gasification

Qu,

Song,

Zou

et al. 2024

Processes

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To reduce pollution and improve the efficiency of coal resource utilization, this study proposed an integrated process for smelting reduction ironmaking and coal gasification. A multi-zone constrained mathematical model, based on heat and mass balance calculations, was developed to predict the energy and material flows required to produce 1 ton of hot metal. Two scenarios were examined: one using pure O2 as the gasification agent (referred to as the non-hydrogen-rich process) and the other using a combination of pure O2 and pure steam (referred to as the hydrogen-rich process). In the non-hydrogen rich process, as the PCR (Post Combustion Ratio) varies from 0% to 8%, the total coal consumption, O2 consumption, and volume of exported gas decrease by 57%, 57% and 53%, respectively. In the hydrogen-rich process, as the H2 content increases from 30% to 50%, the exported gas volume increases by 38%. The upper limit of H2 content in the SRV (Smelting Reduction Vessel) off-gas is mainly determined by the PCR, which decreases from 52.7% to 45.2% as the PCR varies from 0% to 8%. The findings of this work can serve as a theoretical basis for further investigation of the new process.

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Section: Effect Of Pcr Of Srv Off-gasmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Mathematical Modeling for the Process of Smelting Reduction Ironmaking Integrated with Hydrogen-Rich Coal Gasification

Qu,

Song,

Zou

et al. 2024

Processes

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show abstract

“…With the growth of global energy demand and the worsening ecological environment, the coal-to-liquid (CTL) technique, which converts solid coal into liquid fuels in coal-abundant countries, is being developed to adjust and optimize the energy structure, guarantee energy security, and reduce environmental pollution . The characteristics of Chinese energy are “coal-rich, oil-poor, and gas-poor,” and coal is very important for the economic and social development of China in the short term . Compared with fossil diesel, CTL from indirect coal liquefaction (DICL) has a high cetane number (CN), lower aromatics, and a lower boiling range.…”

Section: Introductionmentioning

confidence: 99%

“… 1 The characteristics of Chinese energy are “coal-rich, oil-poor, and gas-poor,” and coal is very important for the economic and social development of China in the short term. 2 Compared with fossil diesel, CTL from indirect coal liquefaction (DICL) has a high cetane number (CN), lower aromatics, and a lower boiling range. The combustion of CTL is more stable and produces lower PM, CO, and HC emissions, 3 so it is a high-quality diesel alternative fuel.…”

Section: Introductionmentioning

confidence: 99%

Study on the Effect of Two-Stage Injection Strategy for Coal-to-Liquid/Gasoline Reactivity-Controlled Compression Ignition Combustion Mode

Pan,

Sun,

Guo

et al. 2024

ACS Omega

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An experimental study was carried out on a modified single-cylinder dual-fuel engine in reactivity-controlled compression ignition (RCCI) mode using pilot fuels with different physicochemical properties, and the effects of the pilot fuels and the two-stage injection strategy on the combustion and emission characteristics of the RCCI mode were explored. The results show that when coal-to-liquid (CTL) is used with a high cetane number as the pilot fuel, the reactivity stratification of the fuel-air mixture is more pronounced. With the advancement of pilot injection timing (SOI1), the heat release rate (HRR) of the CTL/gasoline mode gradually changes from a bimodal pattern to a unimodal pattern. Among them, the bimodal HRR includes CTL premixed combustion and gasoline flame propagation, as well as CTL diffused combustion and gasoline multipoint spontaneous combustion, while the unimodal HRR represents CTL premixed combustion and gasoline multipoint spontaneous combustion. However, the HRR of the fossil diesel/gasoline RCCI combustion mode always exhibits a unimodal form. With the advancement of the main injection timing (SOI2), the gravity center of heat release (CA50) is more advanced when using CTL as the pilot fuel due to the short ignition delay. Overall, compared to fossil diesel, using CTL as the pilot fuel is conducive to controlling the pressure rise rate, which expands the operating range of the RCCI combustion mode. Besides, for both pilot fuels of CTL and fossil diesel, the advancement of SOI1 lowers particle emissions, and the advancement of SOI2 reduces NOx emissions, while the two-stage injection achieves higher indicated thermal efficiency.

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Analysis of thermodynamic equilibrium yield and process simulation for catalytic pyrolysis of light hydrocarbons based on one set of independent reactions

Liu

Zhang

et al. 2022

Chemical Engineering Science

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Comparison of BGL and Lurgi gasification for coal to liquid fuels (CTL): Process modeling, simulation and thermodynamic analysis

Cited by 12 publications

References 48 publications

Mathematical Modeling for the Process of Smelting Reduction Ironmaking Integrated with Hydrogen-Rich Coal Gasification

Mathematical Modeling for the Process of Smelting Reduction Ironmaking Integrated with Hydrogen-Rich Coal Gasification

Study on the Effect of Two-Stage Injection Strategy for Coal-to-Liquid/Gasoline Reactivity-Controlled Compression Ignition Combustion Mode

Analysis of thermodynamic equilibrium yield and process simulation for catalytic pyrolysis of light hydrocarbons based on one set of independent reactions

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