Fabrication of channel type mixing devices for efficient solvent extraction for high purity silica production

Yelchur Venkata Akash, Masaki Mimura, Masahiro Kunimoto, Yasuhiro Fukunaka, Takayuki Homma

研究成果: Conference contribution

抄録

As one of the most cost-effective methods to produce solar-grade silicon (SOG-Si), purification of silica solution by extracting its impurities through wet chemical processes has been proposed. This paper reports on the design of channel type reactor for liquid-liquid extraction to purify silica solution, focusing particularly on the extraction of B (boric acid) in aqueous phase with 2,2,4-trimethyl-1,3-pentanediol (TMPD) in organic phase. The reactor fabricated by 3D printing technology was designed to have two characteristic structures: (i) a throat structure that shows gradually diverging part after converging near Y shaped inlets and (ii) obstacles structure on downstream. Two solutions were made to contact with each other by turbulent mixing around the throat structure, causing small droplets formation that was dispersed and retained efficiently even on downstream by obstacles structure. This droplet dispersion shortens diffusion distance of boric acid to meet TMPD at the liquid-liquid interface, providing efficient mass transfer. At higher flow rate i.e., 380 ml/min, the extraction efficiency was 97.43% after the multi stage process. The results suggest that the channel type reactor designed here is profitable for elimination of impurities, such as B or P, in silica solution to produce SOG-Si.

本文言語English
ホスト出版物のタイトルECS Transactions
編集者A. P. Abbott, R. Alkire, P. Allongue, T. J. Anderson, P. N. Bartlett, M. Bayachou, S. Bhansali, N. Birbilis, A. B. Bocarsly, C. Bock, O. V. Boltalina, S. Brankovic, R. Buchheit, D. A. Buttry, S. Calabrese Barton, M. T. Carter, V. Chaitanya, G. T. Cheek, Z. Chen, D. Chidambaram, B. A. Chin, J. W. Choi, D. Chu, D. E. Cliffel, H. Deligianni, V. Di Noto, N. Dimitrov, M. Doeff, E. A. Douglas, T. Druffel, K. Edstrom, J. M. Fenton, J. Fergus, J. Fransaer, Y. Fukunaka, D. Guyomard, H. Hamada, L. M. Haverhals, P. Hesketh, A. C. Hillier, J. K. Hite, H. Imahori, M. Inaba, M. Innocenti, M. Itagaki, C. Johnson, H. Katayama, S. H. Kilgore, D. J. Kim, J. Koehne, R. Kostecki, G. Krumdick, P. J. Kulesza, J. Leddy, J. J. Lee, O. Leonte, Y. C. Lu, B. L. Lucht, R. P. Lynch, M. Manivannan, R. A. Mantz, P. Marcus, V. Maurice, M. Mauter, J. Mauzeroll, H. N. McMurray, Y. S. Meng, E. L. Miller, I. Milosev, S. D. Minteer, S. Mitra, S. Mukerjee, R. Mukundan, J. Muldoon, L. Nagahara, S. R. Narayan, P. M. Natishan, M. Navaei, J. D. Nicholas, J. Noel, S. S. Nonnenmann, C. O'Dwyer, M. E. Orazem, Y. Oren, J. G. Park, P. Pharkya, P. N. Pintauro, S. Pylypenko, K. Rajeshwar, R. P. Ramasamy, C. Rhodes, D. P. Riemer, D. Roeper, M. Rohwerder, L. Romankiw, S. V. Rotkin, J. L. M. Rupp, M. J. Sailor, D. T. Schwartz, P. K. Sekhar, N. Sharma, A. Simonian, D. K. Smith, K. C. Smith, L. Soleymani, G. R. Stafford, J. A. Staser, V. Subramanian, V. R. Subramanian, K. B. Sundaram, A. H. Suroviec, K. Suto, M. Tao, T. Tatsuma, P. C. Trulove, P. Vanysek, N. Vasiljevic, J. T. Vaughey, S. Virtanen, H. Wang, W. Wang, J. F. Whitacre, G. Williams, M. Winter, D. L. Wood, G. Wu, N. Wu, J. Xiao, Y. Xing, H. Xu, J. J. Yang, G. Zangari
出版社Electrochemical Society Inc.
ページ1441-1446
ページ数6
10
ISBN(印刷版)9781623324797
DOI
出版ステータスPublished - 2017
イベント232nd ECS Meeting - National Harbor, United States
継続期間: 2017 10 12017 10 5

出版物シリーズ

名前ECS Transactions
番号10
80
ISSN(印刷版)1938-6737
ISSN(電子版)1938-5862

Other

Other232nd ECS Meeting
CountryUnited States
CityNational Harbor
Period17/10/117/10/5

ASJC Scopus subject areas

  • Engineering(all)

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