Development of Energy-saving CO2 Capture Technology Using Solid Sorbent

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  • Yogo Katsunori
    Research Institute of Innovative Technology for the Earth (RITE)

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Other Title
  • 固体吸収材を用いた省エネルギー型CO2回収技術の開発
  • コタイ キュウシュウザイ オ モチイタ ショウエネルギーカタ CO ₂ カイシュウ ギジュツ ノ カイハツ

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Description

Solid sorbents are composed of amine absorbents for chemical absorption and porous materials. They have similar CO2 adsorption characters with liquid amine absorbents. Furthermore, they make it possible to significantly reduce the energy consumed as sensible heat and evaporative latent heat in the regeneration process. We investigated the relationship between amine molecular structure and CO2 desorption performance, and successfully fabricated innovative, high-performance solid sorbents capable of low-temperature regeneration and having high adsorption capacities. The lab scale tests were conducted by using steam-aided vacuum swing adsorption (SA-VSA) process, in which steam were supplied in desorption process. After the cycle time was optimized, the result showed that RITE solid sorbents can capture high-purity (99%) CO2 from a simulated flue gas (12% CO2) in high yields (90%), demonstrating that RITE’s solid sorbents have superior performance in CO2 capture. Currently, bench scale test is underway by moving bed system in cooperation with Kawasaki Heavy Industries, Ltd. with the aim of commercialization, and succeeded in CO2 capture on a 7 t/day scale.

Journal

  • ゼオライト

    ゼオライト 37 (2), 47-58, 2020-04-15

    Japan Association of Zeolite

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