Polymer-grade ethylene production via VPSA simulation with a scalable and shaped ultra-microporous adsorbent

IF 3.5 3区工程技术 Q2 ENGINEERING, CHEMICAL

AIChE Journal Pub Date : 2025-02-20 DOI:10.1002/aic.18759

Yechen Liu, Cong Yu, Kun Lu, Tangyin Wu, Rimin You, Xian Suo, Lifeng Yang, Xili Cui, Huabin Xing

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引用次数: 0

Abstract

Energy-efficient pressure swing adsorption (PSA), a technology boosted by extensive research on emerging adsorbents, is a potential alternative to ethylene purification. We investigated, for the first time, the scale-up synthesis, shaping, and high-pressure ethylene-adsorption performance of an ultra-microporous adsorbent, CPL-1-NH₂, with an S-type isotherm for ethylene. Based on the static adsorption data and kilogram-scale breakthrough experiments on the shaped CPL-1-NH₂, vacuum PSA (VPSA) simulation processes were designed to purify ethylene from a C₂H₄/C₂H₆ mixture. Critical variables were investigated and analyzed systematically to increase the purity and recovery of the ethylene product. After parameter optimization, high ethylene purity (99.91%), excellent ethylene recovery (74%), and productivity (1.8 mol kg⁻¹ h⁻¹) were achieved in the 80/20 (C₂H₄/C₂H₆, v/v) VPSA simulation. This study reveals that porous materials with flexible isotherms and rapid regeneration ability are desirable for PSA from an engineering perspective.

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来源期刊

AIChE Journal 工程技术-工程：化工

CiteScore

7.10

自引率

10.80%

发文量

411

审稿时长

3.6 months

期刊介绍： The AIChE Journal is the premier research monthly in chemical engineering and related fields. This peer-reviewed and broad-based journal reports on the most important and latest technological advances in core areas of chemical engineering as well as in other relevant engineering disciplines. To keep abreast with the progressive outlook of the profession, the Journal has been expanding the scope of its editorial contents to include such fast developing areas as biotechnology, electrochemical engineering, and environmental engineering. The AIChE Journal is indeed the global communications vehicle for the world-renowned researchers to exchange top-notch research findings with one another. Subscribing to the AIChE Journal is like having immediate access to nine topical journals in the field. Articles are categorized according to the following topical areas: Biomolecular Engineering, Bioengineering, Biochemicals, Biofuels, and Food Inorganic Materials: Synthesis and Processing Particle Technology and Fluidization Process Systems Engineering Reaction Engineering, Kinetics and Catalysis Separations: Materials, Devices and Processes Soft Materials: Synthesis, Processing and Products Thermodynamics and Molecular-Scale Phenomena Transport Phenomena and Fluid Mechanics.