製紙スラッジの炭化によるCO2固定及び削減量の見積もり

DOI Web Site 被引用文献2件 参考文献36件

書誌事項

タイトル別名
  • Estimate of the Fixation and Reduction Amount of CO2 by Carbonization Treatment of Paper Sludge
  • セイシ スラッジ ノ タンカ ニ ヨル C02 コテイ オヨビ サクゲンリョウ ノ ミツモリ タンカ ショリ ノ CCS ギジュツ ト シテ ノ カノウセイ ガン エイゴブン
  • -The Possibility of CCS Technology of Carbonization Treatment-
  • ―炭化処理のCCS技術としての可能性―

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抄録

In this study, we proposed a new CO2 fixation and reduction method for the paper industry using carbonized paper sludge (CPS) . The carbonaceous material in CPS is derived from CO2 in the air. We considered the CO2 fixation and reduction method using carbonization treatment which stably preserves carbonaceous material in PS. And this CO2 fixation and reduction method is also considered to be a low cost and realizable carbon capture and storage (CCS) technology in the near feature.<BR>We collected the CPS from PS cooperative treatment factory in Fuji city of Shizuoka pref., and analyzed by XRD, XRF and TG⁄DTA. The carbonaceous material in CPS was classified by chemical fractionation treatment using soil science method. Especially, the carbon content ratios of CPS were analyzed by CHNS⁄O Analyzer. The classifying results show that the almost all the carbonaceous material in CPS could be considered “humic mate-rial” that were chemically stable. From this analyzing results, the estimated total amount of CO2 correspond to carbonaceous material in CPS was equal to 19.6 t-CO2 form the daily carbonization treatment process. In this process, the CO2 released from cellulose can be considered “carbon neutral”, however the CO2 discharged from calcite should be calculated at 1.1 t-CO2. At the same time, carbonization treatment needed 5,500 m3 of LNG for combustion improver and 1,016 kWh of electricity for exhausting gas treatment. From these processes, the 12.5 t-CO2 emission was estimated. The total amount of COO2 storage in the daily carbonization treatment was calculated at 6.0 t-CO2, and it was equal to 133.1 kg-CO2 in1t CPS. Applying the carbonization process to PS treatment enables to reduce 214.1 kg-CO2 in1t dried PS (DPS) as compared to applying normal incineration process. On the other hand when PS is substituted instead of crude oil for fuel in boilers, the reduction of CO2 is estimated at 358.3 kg-CO2⁄t (DPS) <BR>These results show that the carbonization and thermal utilization processes to PS can be considered as a CO2 reduction method. And only carbonization process can be considered as CO2 fixation process in limited usage by returning it to the soil as soil conditioner.

収録刊行物

  • 紙パ技協誌

    紙パ技協誌 64 (8), 940-954, 2010

    紙パルプ技術協会

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