Development of Tar Removal Technologies for Biomass Gasification using the By-products

Development of Tar Removal Technologies for Biomass Gasification using the By-products .Renewable Energy Global Innovations

Journal Reference

Energy Procedia, Volume 75, 2015, Pages 208–213.

Shunsuke Nakamura1, Unyaphan Siriwat1,Shigeru Kitano2 , Kunio Yoshikawa1 

Show Affiliations
  1. Tokyo Institute of Technology, G5-8, 4259, Nagatsuta Midori-ku, Yokohama, Kanagawa 226-8502, Japan
  2. Maywa Co., Ltd., 3-8-1, Minato, Kanazawa, Ishikawa, 920-0211, Japan


The technical obstacle of biomass gasification technology is the effective removal of tar, which will cause the clogging of pipes and engines. In this research, in order to develop the low-cost and high-efficiency tar removal technologies, the tar removal performances of bio-oil and char, which are the by-products of biomass gasification processes, were investigated. For this research, the scrubber with 100L of bio-oil and the char bed with 10 kg of char and 3 kg of activated carbon were prepared in the pilot-scale gasification plant. The results show that the bio-oil scrubber and the char bed were effective for tar removal and both of them removed about 60% of tar from the producer gas. It is noteworthy that the tar removal performance of the bio-oil scrubber did not decrease with the passage of time. This implies that the bio-oil scrubber had some big advantages, such as no cost for purchase and transportation of absorbent and no need to change the absorbent inside the scrubber.

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About the author

Shunsuke Nakamura, PhD student, Tokyo Institute of Technology, Japan

Lead author of the paper, Shunsuke Nakamura received his master degree in environmental engineering from Tokyo Institute of Technology, Japan in 2015. Currently, he is working as a PhD student to develop the biomass gasification technology for power generation.  

About the author

Siriwat Unyaphan, PhD student, Tokyo Institute of Technology, Japan.

Siriwat Unyaphan received his M.Eng. from Tokyo Institute of Technology, Tokyo, Japan in 2014, with a research focused on utilizing emulsified absorbent for tar removal in gasification process. He is currently continuing his Ph.D. at Tokyo Institute of Technology. His main interests are tar removal mechanism by physical methods.

About the author

Shigeru Kitano, President, Maywa Co., Ltd

Shigeru Kitano is the president of Maywa Co., Ltd, Ishikawa, Japan. Maywa Co., Ltd dedicates to the development of the technologies to utilize biomass energy by combustion, pyrolysis and gasification. He is an external assessment committee of Industrial Research Institute of Ishikawa, a commissioner of Association Tekkoukiden in Ishikawa, a councilor of Kanazawa Chamber Of Commerce & Industry and a president of Ishikawa Prefecture Finland Friendship Association. He was awarded Business Activity Award in Kanazawa in 2012.

About the author

Kunio Yoshikawa, Professor, Tokyo Institute of Technology, Japan

Dr. Kunio Yoshikawa is a professor of Department of Environmental Science and Technology, Tokyo Institute of Technology, Japan. He graduated from Tokyo Institute of Technology and obtained PhD in 1986. After graduation from Tokyo Institute of Technology, Prof. Yoshikawa worked for Mitsubishi Heavy Industries for one year, and then went back to his home university to become a research associate, associate professor and professor.

His major research areas are energy conversion, thermal engineering, combustion, gasification, waste treatment technologies and atmospheric environmental engineering, and he wrote more than 200 papers. He is an associate editor of Applied Energy. His main awards are AIAA (American Institute of Aeronautics and Astronautics) Best Paper Award in 1999, ASME (American Society of Mechanical Engineers) James Harry Potter Gold Medal in 2001, JSME (Japan Society of Mechanical Engineers) Environmental Technology Achievement Award in 2006, Fellow of JSME in 2008 and Best Educator Award of Tokyo Institute of Technology in 2014.



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