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Perfect removal of SOx, NOx, NH3 and dioxin over activated carbon fiber

Research Project

Project/Area Number 11218208
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionKyushu University

Principal Investigator

MOCHIDA Isao  Kyushu Univ., Inst. Advanced Material Study, Professor, 機能物質化学研究所, 教授 (20037758)

Co-Investigator(Kenkyū-buntansha) KORAI Yozo  Kyushu Univ., Inst. Advanced Material Study, Associate Professor, 機能物質化学研究所, 助教授 (50122693)
Project Period (FY) 1999 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥31,800,000 (Direct Cost: ¥31,800,000)
Fiscal Year 2002: ¥5,400,000 (Direct Cost: ¥5,400,000)
Fiscal Year 2001: ¥6,900,000 (Direct Cost: ¥6,900,000)
Fiscal Year 2000: ¥10,500,000 (Direct Cost: ¥10,500,000)
Fiscal Year 1999: ¥9,000,000 (Direct Cost: ¥9,000,000)
KeywordsActivated carbon fiber / SOx / NOx / de-SOx / de-NOx / sulfuric acid / flue gas de-SOx / heat-treated activation / 硫黄酸化物 / 窒素酸化物 / ダイオキシン / プレカーサーピッチ / チオフェン / 賦活 / ピリジン / NO_x / SO_x / NH_3 / 酸素官能基 / 表面処理 / 表面積 / 活性化
Research Abstract

A flue gas treatment which consisted of switching two steps : removal of S0_2 and regeneration of adsorption ability, using a pitch based activated carbon fiber of very large surface area (ACF), was proposed to allow the continuous removal of S0_2 in flue gas with limited humidity at 50-70℃. Removal of S0_2 at 60-70℃ and regeneration at 30℃ with humid air without S0_2 were found successful to design a switching procedure. Higher temperature of regeneration required more time, although a small difference of two temperatures may be easy for control. The second procedure which removed S0_2 successively at two different temperatures was found also possible although the period of removal at a higher temperature was rather short. This procedure relies on the fact that the amount of adsorbed H_2S0_4 on ACF under stationary conditions was smaller at a lower temperature when sufficient amount of ACF was loaded. In both cases, the regeneration to elute out ad. H_2S0_4 over ACF is the rate determining. It is found by TPD that the regeneration at 30℃ and 70℃ eluted preferentially two H_2S0_4 species over the ACF surface which evolved at lower and higher temperatures, respectively. Adsorbed H_2S0_4 located in the pore which is easily reduced to evolve at a lower temperature in TPD procedure is eluted first at 30℃ since H_20 vapor can get into the pore at the temperature. In contrast, adsorbed H_2S0_4 located on the outer surface of ACF was preferably eluted out at 70℃. Such H_2S0_4 is away from the reactive ACF surface to be reduced to evolve at a higher temperature in TPD.

Report

(5 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • Research Products

    (24 results)

All Other

All Publications (24 results)

  • [Publications] I.Mochida 他: "Mesophase Structure and Properties of Liquid Crystalline Mesophase Pitch and Its Transformation into Carbon Fiber"The Chemical Record. Vol.2. 81-101 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] N.Shirahama 他: "Mechanistic study on adsorption and reduction of N02 over activated carbon fibers"Carbon. Vol.40. 2605-2611 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] M.Tsuji 他: "Effects of Microwave Absorbents in NO Removal by Microwave Discharge of NO/Ar Mixture at Atmospheric Pressure"Chemistry Letters. Vol.3. 338-339 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] I.Mochida 他: "Catalytic activity of pitch-based activated carbon fiber of large surface area heat-treated at high temperature and its regeneration for NO-NH_3 reaction at ambient temperatures"Fuel. Vol.80. 2227-2233 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] I.Mochida 他: "Removal of SOx and NOx over Activated Carbon Fibers"Carbon. Vol.38. 227-239 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] I.Mochida 他: "NO Oxidation over Activated Carbon Fiber (ACF). Part 1.Extended Kinetics over a Pitch Based ACF of Very Large Surface Area"Fuel. Vol.79. 1713-1723 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] I. Mochida, S. H. Yoon, Y. Korai: "Mesophase Structure and Properties of Liquid Crystalline Mesophase Pitch and Its Transformation into Carbon Fiber"The Chemical Record. 2. 81-101 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] N. Shirahama, S. H. Moon, K. H. Choi, T. Enjoji, S. Kawano, Y. Korai, M. Tanoura, I. Mochida: "Mechanistic study on adsorption and reduction of NO_2 over activated carbon fibers"Carbon. 40. 2605-2611 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] M. Tsuji, K. Nakano, J. Kumagae, T. Tsuji, S. H. Yoon, Y. Korai, I. Mochida: "Effects of Microwave Absorbents in NO Removal by Microwave Discharge of NO/Ar Mixture at Atmospheric Pressure"Chemistry Letters. 3. 338-339 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] I. Mochida, S. Kawano, N. Shirahama, T. Enjoji, S. H. Moon, K. Sakanishi, Y. Korai, A. Yasutake, M. Yoshikawa: "Catalytic activity of pitch-based activated carbon fiber of large surface area heat-treated at high temperature and its regeneration for NO-NH_3 reaction at ambient temperatures"Fuel. 80. 2227-2233 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] I. Mochida, Y. Korai, M. Shirahama, S. Kawano, T. Hada, Y. Seo, M. Yoshikawa, A. Yasutake: "Removal of SOx and NOx over Activated Carbon Fibers"Carbon. 38. 227-239 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] I. Mochida, N. Shirahama, S. Kawano, Y. Korai, A. Yasutake, M. Tanoura, S. Fujii, M. Yoshikawa: "NO Oxidation over Activated Carbon Fiber (ACF). Part 1. Extended Kinetics over a Pitch Based ACF of Very Large Surface Area"Fuel. 79. 1713-1723 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] I.Mochida 他: "Mesosopic Structure and Properties of Liquid Crystalline Mesophase Pitch and Its Transformation into Carbon Fiber"The Chemical Record. Vol.2. 81-101 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] H.Yang 他: "Recovery of Stacking Height of Mesophase Pitch Fiber by Solid-Phase Annealing"Chemistry Letters. Vol.6. 574-575 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] M.Tsuji 他: "Effects of Microwave Absorbents in NO Removal by Microwave Discharge of NO/Ar Mixture at Atmospheric Pressure"Chemistry Letters. Vol.3. 338-339 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] W.Qiao 他: "Preparation of an activated carbon artifact : oxidative modification of coconut shell-based carbon to improve the stength"Carbon. Vol.40. 351-358 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] I.Mochida 他: "Anodic performance and insertion mechanism of hard carbons prepared from synthetic isotropic pitches"Carbon. 39. 399-410 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] I.Mochida 他: "Mesoscopic Texture at the Skin Area of Mesophase Pitch-Based Carbon Fiber"Carbon. 38. 805-815 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] I.Mochida 他: "NO Oxidation over Activated Carbon Fiber (ACF). Part1. Extended Kinetics over Pitch Based ACF of Very Large Surface Area"Fuel. 79. 1713-1723 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] I.Mochida 他: "Removal of SOx and NOx over activated carbon fibers"Carbon. 38. 227-239 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] I.Mochida 他: "NO Oxidation over Activated Carbon Fiber (ACF). Part 1. Extended Kinetics over a Pitch Based ACF of Very Large Surface Area"Fuel. 79. 1713-1723 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] I.Mochida 他: "Removal of SOx and NOx over activated carbon fibers"Carbon. 38. 227-239 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 持田 勲: "活性炭素繊維を用いる大気汚染"ケミカルエンジニアリング. 43・10. 27-31 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] I.Mochida: "NO Oxidation over Activated Carbon Fiber(ACF)(l)Extended Kinetics over A Pitch Based ACF of Large Surface Area"Fuel. (発表予定).

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2018-03-28  

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