Construction Cost of KP Mill Construction for Bioethanol Production

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Other Title
  • バイオエタノール生産のためのKP工場の建設コスト
  • バイオエタノール セイサン ノ タメ ノ KP コウジョウ ノ ケンセツ コスト

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Abstract

Second-generation bioethanol has been promoted as a viable form of renewable energy to sustain the global environment. In Japan, the technological development in commercializing cellulosic bioethanol production by 2020 has been pursued by the industry, government and academia, focusing on high-yielding herbaceous biomass and fast growing hardwood as the cellulosic feedstock, and the Kraft pulping (KP) process that can pre-treat the large volumes of biomass in preparation for bioethanol production. This report details the capital cost associated with constructing facilities for KP process with bioethanol production. The major findings were : <br>1. The construction costs of new KP mills and mills being planned or under construction around the world since 2000 were proportional to the scaling exponent 1.03 of their production capacities. The results were determined from a sample size of 85, with a contribution ratio of r2=0.82.<br>2. The approximation formula can be used to calculate the construction cost of the KP (biomass pre-treatment) portion of bioethanol production facility. For example, a facility with an economically viable production capacity of 200,000 kL/year would need a Kraft pulp production capacity of 1,500 ADT/day, one of the largest in Japan. The fixed cost for constructing facilities including the KP process was calculated as US$ 0.38 /L of bioethanol.<br>3. The location of the KP mill is irrelevant for the approximation formula. The estimated equipment purchasing cost is proportional to the production capacity to the 0.6-0.7th power, which is in line with equipment installation costs reported by NREL to be 1.0 to 3.1 times the purchase cost. Further research and data is needed to confirm these findings.<br>4. The fixed cost of bioethanol production using Kraft pulp from new KP mills is extremely high, necessitating the need to consider establishing bioethanol plants that use Kraft pulp made from fully-depreciated KP mills to decrease this cost.

Journal

  • JAPAN TAPPI JOURNAL

    JAPAN TAPPI JOURNAL 69 (5), 518-531, 2015

    JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY

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