Experimental and simulation study on efficient CH4/N2 separation by pressure swing adsorption on silicalite-1 pellets

Jiangfeng Yang, Honghao Bai, Hua Shang, Jun Wang, Jinping Li, Shuguang Deng

Research output: Contribution to journalArticle

Abstract

In this work, we have studied high-silica (Si/Al = 200) zeolite silicalite-1 pellets sorbent for the separation of methane and nitrogen in a pressure swing adsorption (PSA) process. The pellet samples have well maintained similar adsorption and separation performances of the zeolite powder samples. The adsorption kinetic parameters were determined by actual breakthrough experiments on the pellet samples. The effects of feed flow and cycle time on methane product purity and recovery have been investigated. The accuracy of the numerical simulation method has been verified by the experiment data. In order to optimize the coalbed methane enrichment performance, the two-bed six-step PSA cycle was applied in the simulation. The simulation results revealed that 45% and 57% methane concentration could be achieved from 20% and 30% methane feedings with a recovery above 80%.

Original languageEnglish (US)
Article number124222
JournalChemical Engineering Journal
Volume388
DOIs
StatePublished - May 15 2020
Externally publishedYes

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Keywords

  • Coalbed methane
  • Process optimization
  • PSA simulation
  • Silicalite-1 pellets

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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