COSMO-based solvent selection and Aspen Plus process simulation for tar absorptive removal

Zhang, Xiaosong; Pan, Jiawei; Wang, Yinfeng; Qian, Tianle; Zhu, Yuezhao; Sun, Hongqi; Gao, Jian; Chen, Haijun; Gao, Ying; Liu, Chang

doi:10.1016/j.apenergy.2019.113314

Cited by 7 publications

(4 citation statements)

References 39 publications

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“…Zhang et al [23] screened several solvents using the conductor-like screening model for real solvents (COSMO-RS) and a mixture of soybean oil and N-formylmorpholine turned out to be an optimal solvent for tar absorption. The simulation results were found to be in good agreement with the experimental data.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Modeling Studies on the Removal of Tars from Coal‐Derived Syngas Using Methyl Oleate

2021

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The absorption of model tar compounds (benzene, toluene, and xylene) in methyl oleate is studied in a fixed-bed absorption column. The dynamic system involving the recirculation of the tar-rich solvent is modeled as a combination of various steady-state snapshots in time, and this approach effectively predicts the performance of the absorber. The rate-based model shows a good agreement with the experimental data as compared to the equilibrium-based model. Further, a pilotscale absorber is designed for the removal of tars from syngas generated in a coalto-methanol plant. The validated rate-based model is used to predict the effect of various operating and geometry parameters on the absorption efficiency of the pilot-scale absorber. The regeneration of the solvent by steam stripping and reboiled stripping is evaluated.

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Section: Introductionmentioning

confidence: 99%

Experimental and Modeling Studies on the Removal of Tars from Coal‐Derived Syngas Using Methyl Oleate

2021

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“…In one word, vegetable oils, as a low-cost, sustainable, and highly efficient absorber, are the most promising choice for tar removal with scrubbers. 21 …”

Section: Introductionmentioning

confidence: 99%

“…What is more, based on the study of Tarnpradab et al, the spent vegetable oil could be recovered by filtration and centrifugal sedimentation and the regenerated vegetable oil still showed more than 90% efficiency for gravimetric tar. In one word, vegetable oils, as a low-cost, sustainable, and highly efficient absorber, are the most promising choice for tar removal with scrubbers …”

Section: Introductionmentioning

confidence: 99%

“…In one word, vegetable oils, as a low-cost, sustainable, and highly efficient absorber, are the most promising choice for tar removal with scrubbers. 21 The available studies about vegetable oil-based absorption mostly focused on the mechanical process, such as the formation of microbubbles, 9 the control of bubbler size, 23 and the development of integrated systems, 22 while less attention has been given on the oil itself. Vegetable oils are a general designation of the oily materials derived from vegetables, and they are usually hybrid liquids that contain saturated (cannot chemically add hydrogen) and unsaturated (can be hydrogenated) 24 fatty acids.…”

Section: Introductionmentioning

confidence: 99%

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Experimental and Comprehensive Evaluation of Vegetable Oils for Biomass Tar Absorption

Wang

Tao

et al. 2020

ACS Omega

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Biomass tar is the bottleneck of biomass gasification, which not only is adverse to energy production but also brings severe environmental issues. A scrubber with vegetable oil is considered as a low-cost but efficient approach for tar removal, but the effects of oil’s properties on different tar absorptions were rarely reported. In this study, canola oil, palm oil, and pure oleic acid and linoleic acid, which are the main compounds of vegetable oils, were employed for absorptive removal of benzene, toluene, and phenol. The degree of unsaturation, average molecular weight, and average chain length of solvents were quantitatively characterized. A series of time and temperature-dependent absorption experiments were conducted, and the relationship between oils’ properties and absorption performances was built. Results showed that pure oleic acid had the biggest absorption capacity for benzene and toluene due to the mono-unsaturated structure. Increasing the average molecular weight and chain length also enhanced tar absorption. Moreover, Grey relative analysis was employed to investigate the influence of each factor on tar absorption. The average molecular weight exerted the most significant influence on tar absorption in the tested temperature range whose comprehensive relevance coefficients reached the highest at 0.9810, 0.7669, and 0.7739 for benzene, toluene, and phenol, respectively. This study puts more attention on the nature of vegetable oils, and we hope to provide useful information for modulating a better oil-based scrubber medium and further enhancing tar absorptive removal.

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Numerical investigation of a process model integrating gasification and tar removal

Yao

et al. 2021

Biomass Conv. Bioref.

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COSMO-based solvent selection and Aspen Plus process simulation for tar absorptive removal

Cited by 7 publications

References 39 publications

Experimental and Modeling Studies on the Removal of Tars from Coal‐Derived Syngas Using Methyl Oleate

Experimental and Modeling Studies on the Removal of Tars from Coal‐Derived Syngas Using Methyl Oleate

Experimental and Comprehensive Evaluation of Vegetable Oils for Biomass Tar Absorption

Numerical investigation of a process model integrating gasification and tar removal

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