Effective semicontinuous distillation design for separating normal alkanes via multi-objective optimization and control

Liu, Jiyan; Ren, Junyao; Yang, Yilei; Liu, Xinglong; Sun, Lanyi

doi:10.1016/j.cherd.2021.02.018

Cited by 16 publications

(3 citation statements)

References 40 publications

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“…The commonly employed technique involves dividing the tar into different temperature-based fractions through distillation and then utilizing them separately. Distillation stands as the predominant and energy intensive separation method within the chemical industry . One potential avenue for enhancing its efficiency and reducing energy consumption lies in the application of vacuum distillation.…”

Section: Introductionmentioning

confidence: 99%

“…Distillation stands as the predominant and energy intensive separation method within the chemical industry. 15 One potential avenue for enhancing its efficiency and reducing energy consumption lies in the application of vacuum distillation. However, there has been limited attention given to how the conditions under which the vacuum distillation is carried out affect the properties of the tar and its fractions, which significantly influence their utilization method.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Study on Vacuum Distillation Separation Characteristics of Tar Containing Solid Particles: Distributions of Light Components

Yang,

Hou,

Wang

et al. 2024

ACS Omega

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The impacts of the composition and properties of tar products on their utilization are of great importance, while the consequences of varying tar separation conditions on distillation fractions remain underexplored. Solid impurities in special tar products (e.g., subsurface in situ pyrolysis-derived tar-like substances) can contribute to the separation as well. In the present study, low-temperature coal tar (LTCT) was used as an analogue to pyrolysis product, mixed with semi-coke and coal dust, representing pyrolytic byproducts and nonpyrolytic substances, respectively. The LTCT mixtures were tested with vacuum distillation at various pressures and temperatures. The results revealed the role of pressure in fraction distribution across temperatures, with higher pressure concentrating fractions at lower temperatures. The impact of solid impurities on distillation primarily stemmed from adsorption. Minimal concentrations of solid impurities carried coal dust/semi-coke into the distillation, but higher levels retained them in the residue. The adsorption of coal dust was quite high at lower temperatures and waned as temperature increased, unlike semi-coke, which had consistent adsorption throughout the distillation. The present study can advance the understanding of vacuum distillation for tar products in the presence of solid impurities, offering a framework for the effective distillation/utilization of coal tar. By probing separation conditions, tar properties, and solid impurity effects, the present research will refine strategies for optimizing coal tar use, crucial for enhancing energy security and sustainable progress in China.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental Study on Vacuum Distillation Separation Characteristics of Tar Containing Solid Particles: Distributions of Light Components

Yang,

Hou,

Wang

et al. 2024

ACS Omega

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“…This paper proposes for the first time the micromixer optimization method that combines the fractal principle and multi-objective optimization based on intelligent algorithms. We study the multi-objective optimization [23][24][25][26] of the micromixer based on Cantor fractal baffle to find the micromixer with excellent mixing performance and pressure drop. It is believed that with the continuous research and exploration of experts, the combination of fractal and intelligent algorithms [27][28][29] for objective optimization will definitely bring convenience to human production and life.…”

mentioning

confidence: 99%

New insights into the micromixer with Cantor fractal obstacles through genetic algorithm

Chen

2022

Sci Rep

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This work is mainly to combine fractal principle with multi-objective genetic algorithm, and the multi-objective optimization of the Cantor fractal baffle micromixer is carried out. At different Reynolds numbers (Res), the three-dimensional Navier–Stokes equation is employed to numerically analyze the fluid flow and mixing in the microchannel. We choose the ratio of the three parameters associated with the geometry of the micromixer as design variables, and take the mixing index and pressure drop at the outlet of the micromixer as two objective functions for optimization. For the parameter study of the design space, the Latin hypercube sampling (LHS) method is used as an experimental design technique, and it is used to select design points in the design space. We use the proxy modeling of the response surface analysis (RSA) to approximate the objective function. The genetic algorithm is used to get the Pareto optimal frontier of the micromixer. K-means clustering is used to classify the optimal solution set, and we select representative design variables from it. Through multi-objective optimization, when Re = 1 and 10, the optimized mixing efficiency of the micromixer increased by 20.59% and 14.07% compared with the reference design, respectively. And we also prove that this multi-objective optimization method is applicable to any Res.

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Process intensification in biofuels production

Hernández

2022

Biofuels and Biorefining

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Effective semicontinuous distillation design for separating normal alkanes via multi-objective optimization and control

Cited by 16 publications

References 40 publications

Experimental Study on Vacuum Distillation Separation Characteristics of Tar Containing Solid Particles: Distributions of Light Components

Experimental Study on Vacuum Distillation Separation Characteristics of Tar Containing Solid Particles: Distributions of Light Components

New insights into the micromixer with Cantor fractal obstacles through genetic algorithm

Process intensification in biofuels production

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