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Method and device for separating hydrogen sulfide and hydrogen production system using the same

  • US 9,365,423 B2
  • Filed: 10/29/2012
  • Issued: 06/14/2016
  • Est. Priority Date: 12/08/2011
  • Status: Expired due to Fees
First Claim
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1. A system for producing hydrogen from a raw material gas that is a gas to be treated containing hydrogen sulfide, carbon dioxide, and hydrogen, the system comprising:

  • a hydrogen sulfide separation devicea carbon dioxide separation device that is provided downstream of the hydrogen sulfide separation device to separate carbon dioxide from a gas obtained by removing hydrogen sulfide from the raw material gas; and

    a hydrogen purification device that is provided downstream of the carbon dioxide separation device to separate hydrogen from a gas obtained by removing hydrogen sulfide and carbon dioxide from the raw material gas;

    wherein the hydrogen sulfide separation device is a device for selectively separating hydrogen sulfide from a gas to be treated containing hydrogen sulfide and carbon dioxide using a hydrogen sulfide adsorbent in which an amine compound is supported by a porous material, the device comprising;

    an adsorbent-packed tower filled with the hydrogen sulfide adsorbent;

    means for supplying the gas to be treated to the adsorbent-packed tower to bring the hydrogen sulfide adsorbent and the gas to be treated into contact with each other; and

    means for supplying a heated gas flow for desorbing hydrogen sulfide from the hydrogen sulfide adsorbent after adsorption of hydrogen sulfide to the adsorbent-packed tower,wherein the amine compound is a tertiary amine, and the contact between the hydrogen sulfide adsorbent and the gas to be treated in the adsorbent-packed tower is made in a dry state.

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