Psa system for the recovery of carbon dioxide from blast furnace gas in steel works the infuence of operation conditions on co2 separation

Takashi Haraoka, Yasuhiro Mogi, Hitoshi Saima

研究成果: ジャーナルへの寄稿記事

1 引用 (Scopus)

抄録

In Japan, steel works discharge carbon dioxide about 15% of total discharging amount. For reducing CO2 emission, development of separation and recovery technology of carbon dioxide from blast furnace gas by utilizing PSA technology is in progress. At first, 14 kinds of adsorbents from the market are evaluated by adsorption isotherms. It was found that zeolite called "Zeolum F-9 was suitable for carbon dioxide separation with its higher carbon dioxide adsorption capacity and selectivity. Ten, Zeolum F-9 was evaluated with laboratory PSA testing apparatus. PSA was operated with 3 steps, that is, "adsorption," "purge" and"desorption" step to separate carbon dioxide from mixed gas, which composition was similar to blast furnace gas. Te infuence of the three PSA operation factors on CO2 purity and yield were evaluated. 1) Te ratio of Feed gas fow and adsorbent weight ratio effects on CO2 recovery. The CO2 recovery was proportional to the raito until to some extent. Over that, the CO2 recovery became constant. 2) The concentration of CO2 in the feed gas was evaluated. The time of purging decreased (purge gas decreased), so that CO2 concentration in the feed gas was increased. 3) The efect of moisture in the feed gas was evaluated. At first, CO2 yield decreased, but after that, CO2 yield became constant. It was explained that supplied water adsorbed and desorbed on the adsorbent such like other gas species and no effect on the CO2 separation. COURSE 50 project including this study is conducted under the fnancial support of NEDO (New Energy and Industrial Technology Development Organization in Japan).

元の言語英語
ページ(範囲)439-444
ページ数6
ジャーナルkagaku kogaku ronbunshu
39
発行部数5
DOI
出版物ステータス出版済み - 9 25 2013

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Steel
Blast furnaces
Carbon Dioxide
Carbon dioxide
Gases
Recovery
Adsorbents
Zeolites
Adsorption
Purging
Adsorption isotherms
Desorption
Moisture
Water
Testing

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Chemistry(all)

これを引用

Psa system for the recovery of carbon dioxide from blast furnace gas in steel works the infuence of operation conditions on co2 separation. / Haraoka, Takashi; Mogi, Yasuhiro; Saima, Hitoshi.

:: kagaku kogaku ronbunshu, 巻 39, 番号 5, 25.09.2013, p. 439-444.

研究成果: ジャーナルへの寄稿記事

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abstract = "In Japan, steel works discharge carbon dioxide about 15{\%} of total discharging amount. For reducing CO2 emission, development of separation and recovery technology of carbon dioxide from blast furnace gas by utilizing PSA technology is in progress. At first, 14 kinds of adsorbents from the market are evaluated by adsorption isotherms. It was found that zeolite called {"}Zeolum F-9 was suitable for carbon dioxide separation with its higher carbon dioxide adsorption capacity and selectivity. Ten, Zeolum F-9 was evaluated with laboratory PSA testing apparatus. PSA was operated with 3 steps, that is, {"}adsorption,{"} {"}purge{"} and{"}desorption{"} step to separate carbon dioxide from mixed gas, which composition was similar to blast furnace gas. Te infuence of the three PSA operation factors on CO2 purity and yield were evaluated. 1) Te ratio of Feed gas fow and adsorbent weight ratio effects on CO2 recovery. The CO2 recovery was proportional to the raito until to some extent. Over that, the CO2 recovery became constant. 2) The concentration of CO2 in the feed gas was evaluated. The time of purging decreased (purge gas decreased), so that CO2 concentration in the feed gas was increased. 3) The efect of moisture in the feed gas was evaluated. At first, CO2 yield decreased, but after that, CO2 yield became constant. It was explained that supplied water adsorbed and desorbed on the adsorbent such like other gas species and no effect on the CO2 separation. COURSE 50 project including this study is conducted under the fnancial support of NEDO (New Energy and Industrial Technology Development Organization in Japan).",
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