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Title 高密度バイオマスブリケットの着火燃焼特性∼バイオマス の

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Title 高密度バイオマスブリケットの着火燃焼特性∼バイオマス の
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Title
Author(s)
Citation
高密度バイオマスブリケットの着火燃焼特性∼バイオマス
のエネルギー利用に向けて∼
伊東, 弘行, Ito, Hiroyuki, 井田, 民男, Ida, Tamio,
藤田, 修, Fujita, Osamu
神奈川大学工学研究所所報, 36: 16-21
Date
2013-11-29
Type
Departmental Bulletin Paper
Rights
publisher
KANAGAWA University Repository
㧗ᐦᗘࣂ࢖࣐࢜ࢫࣈࣜࢣࢵࢺࡢ╔ⅆ⇞↝≉ᛶ
㹼 ࣂ࢖࣐࢜ࢫࡢ࢚ࢿࣝࢠ࣮฼⏝࡟ྥࡅ࡚ 㹼
ఀᮾ ᘯ⾜㸨㸪஭⏣Ẹ⏨㸨㸨㸪⸨⏣ಟ㸨㸨㸨
Ignition and Combustion Characteristics of Highly Densified Biomass Briquette
Hiroyuki ITO㸨, Tamio IDA㸨㸨, Osamu FUJITA㸨㸨㸨
㸯㸬⥴ゝ
ࡢ◊✲ㄽᩥ࡜ࡋ࡚☜ㄆ࡛ࡁࡿࡶࡢࡣᑡ࡞࠸ࡢࡀ⌧≧࡛࠶
ᆅ⌫ ᬮ໬࠾ࡼࡧ໬▼⇞ᩱ㈨※ᯤῬࡢၥ㢟࠿ࡽ㸪㏆ᖺ
ࡿ㸬〇㐀ࡋࡓࣂ࢖࣐࢜ࢫ⇞ᩱࢆ⇞↝ࡋ࡚࢚ࢿࣝࢠ࣮ࢆྲྀ
෌⏕ྍ⬟࢚ࢿࣝࢠ࣮ࡀὀ┠ࡉࢀ࡚࠸ࡿ㸬࣮࢝࣎ࣥࢽ࣮ࣗ
ࡾฟࡍୖ࡛㸪⇞ᩱࡢ⇞↝≉ᛶࢆ⌮ゎࡍࡿࡇ࡜ࡣ㸪ຠ⋡ࡢ
ࢺࣛࣝࡢ⪃࠼᪉ࢆ⫼ᬒ࡜ࡍࡿ᳜≀⏤᮶ࣂ࢖࣐࢜ࢫࡢ⇞ᩱ
ࡼ࠸᭱㐺࡞⇞↝ᶵჾࡢタィ࡜࠸࠺ほⅬ࠿ࡽ㠀ᖖ࡟㔜せ࡛
໬ࡶࡑࡢࡦ࡜ࡘ࡛࠶ࡿ㸬࣮࢝࣎ࣥࢽ࣮ࣗࢺࣛࣝ࡜ࡣ㸪᳜
࠶ࡿ㸬
≀ࡀ኱Ẽ୰࠿ࡽ྾཰ࡍࡿ஧㓟໬Ⅳ⣲㔞࡜㸪ࡑࡢ᳜≀ࢆࣂ
ᮏ◊✲࡛ࡣ㸪㧗ᐦᗘᅛయࣂ࢖࣐࢜ࢫࣈࣜࢣࢵࢺ࡛࠶ࡿ
࢖࣐࢜ࢫ⇞ᩱ࡜ࡋ࡚⇞↝ࡋࡓ㝿࡟ᨺฟࡉࢀࡿ஧㓟໬Ⅳ⣲
ࣂ࢖࢜ࢥ࣮ࢡࢫ(Bio-coke㸸௨ୗ BIC ࡜⾲グ)(8)ࢆ㸪⇞↝⅔
㔞ࢆᆒ⾮ࡉࡏࡿ㸪ࡍ࡞ࢃࡕ኱Ẽ୰ࡢ஧㓟໬Ⅳ⣲㔞ࢆேⅭ
࡛ຍ⇕ࡋࡓ㝿ࡢ⇕ศゎ࣭╔ⅆ࣭⇞↝≉ᛶࢆㄪ࡭ࡓ㸬BIC
ⓗάື࡟ࡼࡗ࡚ቑ኱ࡉࡏ࡞࠸࡜࠸࠺ᴫᛕ࡛࠶ࡿ㸬ࣂ࢖࢜
ࡣ㸪㕲⁐ゎ⅔ࡢ▼Ⅳࢥ࣮ࢡࢫ௦᭰⇞ᩱ࡜ࡋ࡚㛤Ⓨࡉࢀࡓ
࣐ࢫࡢ⇞ᩱ฼⏝ࡣྂࡃ࠿ࡽ⾜ࢃࢀ࡚࠾ࡾ㸪⌧ᅾ࡛ࡶⓎᒎ
㧗ᐦᗘ࣭㧗◳ᗘࡢࣂ࢖࣐࢜ࢫࣈࣜࢣࢵࢺࡢ࿧⛠࡛࠶ࡾ㸪
㏵ୖᅜࢆ୰ᚰ࡜ࡋ࡚ࣂ࢖࣐࢜ࢫᅛయࢆ┤᥋⇞↝ࡍࡿࡇ࡜
ᮌ㉁ᮦࡣ໚ㄽࡢࡇ࡜ᗫᲠ≀➼࠶ࡽࡺࡿ᳜≀⏤᮶ࡢࣂ࢖࢜
࡟ࡼࡾᗈࡃ฼⏝ࡉࢀ࡚࠸ࡿ(1)㸬ᅛయࣂ࢖࣐࢜ࢫ⇞ᩱࡢ฼
࣐ࢫᮦ࠿ࡽ〇㐀࡛ࡁࡿࡇ࡜࠿ࡽ㸪ཎᮦᩱ㈨※ㄪ㐩ࡀẚ㍑
⏝ᙧែ࡜ࡋ࡚ࡣ㸪ࣂ࢖࣐࢜ࢫᮦࢆࢳࢵࣉ≧ࡸᚤ⢊≧࡟⢊
ⓗᐜ᫆࠿ࡘపࢥࢫࢺ࡜࠸࠺≉㛗ࡀ࠶ࡾ㸪௒ᚋ㸪BIC ⇞ᩱ
○ࡋ࡚౑⏝ࡍࡿࡶࡢ㸪࣌ࣞࢵࢺࡸࣈࣜࢣࢵࢺ࡟ 1 ḟຍᕤ
ࡢ฼ά⏝ࡀᮇᚅࡉࢀ࡚࠸ࡿ㸬ࡋ࠿ࡋ࡞ࡀࡽ㸪BIC ࡢ⇞↝
ࡋ࡚౑⏝ࡍࡿࡶࡢ㸪ࡲࡓⅣ໬࣭࢞ࢫ໬ࡢ๪⏕≀࡜ࡋ࡚ᚓ
≉ᛶ࡟㛵ࡋ࡚ࡶ௚ࡢᅛయࣂ࢖࣐࢜ࢫ⇞ᩱ࡜ྠᵝ࡟ᇶ♏◊
ࡽࢀࡿࢳ࣮ࣕࢆ฼⏝ࡍࡿࡶࡢࡀ࠶ࡿ㸬ࣂ࢖࣐࢜ࢫᮦࢆᅽ
✲ࡀᑡ࡞ࡃ㸪BIC ࡢᇶ♏⇞↝≉ᛶ㸪࡜ࡃ࡟࣎࢖࣮ࣛ⇞↝
⦰ᡂᙧࡋ࡚࣌ࣞࢵࢺࡸࣈࣜࢣࢵࢺ໬ࡍࡿࡇ࡜࡛㸪࢚ࢿࣝ
⅔➼ࢆ᝿ᐃࡋࡓ⇞↝≉ᛶ࡟㛵ࡋ࡚ࡣ➹⪅ࡽࡢ◊✲(9-11)ࢆ
ࢠ࣮ᐦᗘࢆ኱ࡁࡃฟ᮶ࡿࡇ࡜࠿ࡽ㈓ⶶࡸ㍺㏦ࢥࢫࢺࢆ๐
㝖࠸࡚࡯࡜ࢇ࡝ぢࡽࢀ࡞࠸㸬௒ᚋ㸪BIC ࡢ฼⏝⠊ᅖᣑ኱
ῶ࡛ࡁࡿ࡯࠿㸪⇞ᩱࡢᆒ㉁ᛶࢆ㧗ࡵࡽࢀࡿࡇ࡜࠿ࡽ⇞ᩱ
࠾ࡼࡧ᭱㐺࡞⇞↝ᙧែ㸪⇞↝ჾᙧ≧ࡸ㐠㌿᮲௳ࢆỴᐃࡍ
ࡢ⇞↝ไᚚࢆ⾜࠺ୖ࡛᭷฼࡜࡞ࡿ㸬
ࡿ࡟ࡣ㸪BIC ࡢᇶᮏⓗ࡞⇞↝≉ᛶࢆᢕᥱࡍࡿᚲせࡀ࠶ࡿ㸬
ᅛయࣂ࢖࣐࢜ࢫࡢ⇞ᩱ໬࡟㛵ࡋ࡚㸪⇞ᩱ〇㐀࣭ᙉᗘホ
(2-6)
ᮏ✏࡛ࡣ㸪ᖹᡂ 20 ᖺᗘ࡟໭ᾏ㐨ୗᕝ⏫࡛⾜ࢃࢀࡓࠕప
㸬୍᪉㸪Ọ
Ⅳ⣲♫఍࡟ྥࡅࡓᢏ⾡ࢩ࣮ࢬⓎ᥀࣭♫఍ࢩࢫࢸ࣒ᐇド஦
ᶫࡽ(7)ࡀᣦ᦬ࡋ࡚࠸ࡿࡼ࠺࡟㸪⇞↝≉ᛶ࡟㛵ࡋ࡚ࡣ㸪ಶࠎ
ᴗ࡛ࠖྲྀࡾୖࡆࡽࢀࡓࢱࢹ⛉ࡢከᖺⲡ࡛࠶ࡿ࢖ࢱࢻࣜࢆ
౯➼ࡢほⅬ࠿ࡽከࡃࡢ◊✲ࡀ⾜ࢃࢀ࡚࠸ࡿ
ཎᩱ࡜ࡍࡿ BIC ࡟↔Ⅼࢆᙜ࡚㸪ࡇࡢ⇞↝⌧㇟࡟㛵ࢃࡿᇶ
*෸ᩍᤵ ᶵᲔᕤᏛ⛉
Associate Professor, Dept. of Mechanical Engineering
*෸ᩍᤵ ㏆␥኱Ꮫ⌮ᕤᏛ㒊 ᶵᲔᕤᏛ⛉
Associate Professor, Dept. of Mechanical Engineering, Kinki
University
*ᩍᤵ ໭ᾏ㐨኱Ꮫ኱Ꮫ㝔ᕤᏛ◊✲㝔 ᶵᲔᏱᐂᕤᏛ㒊㛛
Professor, Div. of Space and Mechanical Engineering,
Hokkaido University
ᮏⓗ࡞ᛶ㉁㸪⇕ศゎ࠾ࡼࡧ⇞↝≉ᛶࢆ⤂௓ࡍࡿ㸬
㸰㸬࢖ࢱࢻࣜ BIC ࡢᇶᮏⓗ࡞ᛶ㉁
2.1 ࢖ࢱࢻࣜ BIC ࡢ〇㐀࠾ࡼࡧ≀⌮ⓗᛶ㉁
໭ᾏ㐨ୗᕝ⏫ෆ࡟⮬⏕ࡋ⏝㏵ࡢᑡ࡞࠸ከᖺⲡࡢ࢖ࢱࢻ
ࣜࢆ BIC ཎᮦᩱ࡜ࡋ࡚౑⏝ࡋࡓ㸬ࡇࢀࡣୗᕝ⏫ෆ࡟࠶ࡿ
㧗ᐦᗘࣂ࢖࣐࢜ࢫࣈࣜࢣࢵࢺࡢ╔ⅆ⇞↝≉ᛶ
ࣅࢽࣝࣁ࢘ࢫࡢᬮᡣ⏝⇞ᩱ࡬ࡢ౑⏝ࢆ᝿ᐃࡋࡓࡶࡢ࡛㸪
ࡧ 13wt%⛬ᗘ࡛࠶ࡿࡇ࡜ࡀࢃ࠿ࡿࠋࡲࡓ㸪Ỉศࡢ⵨Ⓨࡣ
ᾘ㈝ᆅ࡟࡚Ᏻ౯࡟ㄪ㐩ฟ᮶ࡿ฼Ⅼࡀ࠶ࡿ㸬཰㞟᫬ࡢ࢖ࢱ
400K ௨ୗ㸪᥹Ⓨศࡢᨺฟࡣ⣙ 450K ௨ୖ࡛ぢࡽࢀࡿ㸬
ࢻࣜࡢእほ෗┿ࢆᅗ 1 ࡟♧ࡍ㸬཰㞟ࡉࢀࡓ࢖ࢱࢻࣜࡣ⮬
↛஝⇱ࡢᚋ㸪⢊○ჾ࡛◚○ᚋ㸪㔠ᆺ࡟඘ሸࡋ࡚ຍ⇕ᅽ⦰
ᡂᆺࡍࡿ㸬BIC ࡣ౑⏝ࡍࡿ㔠ᆺࡢᙧ≧㸪ᑍἲ࡟ࡼࡾ௵ព
࡟ᡂᆺ࡛ࡁࡿࡀ㸪
ࡇࡇ࡛ࡣȭ48mm™85mm ࡢ෇⟄ᙧ≧࡜
ࡋࡓ㸬᳜≀⏤᮶ࡢࣂ࢖࣐࢜ࢫヨᩱࡣ୺࡟㸪ࢭ࣮ࣝࣟࢫ㸪
࡬࣑ࢭ࣮ࣝࣟࢫ࠾ࡼࡧࣜࢢࢽࣥ࠿ࡽᵓᡂࡉࢀࡿࡇ࡜ࡀ▱
ࡽࢀ࡚࠸ࡿ㸬඘ሸヨᩱࢆⅣ໬㛤ጞ௨ୗࡢ ᗘ࡟ຍ⇕ࡋ࡞
ࡀࡽຍᅽಖᣢࡍࡿࡇ࡜࡛㸪ヨᩱ୰ࡢࣜࢢࢽࣥ࠾ࡼࡧ࡬࣑
ᅗ ࢖ࢱࢻࣜ %,& ࡢ⇕㔜㔞ศᯒ⤖ᯝ
ࢭ࣮ࣝࣟࢫࡀ㌾໬࠶ࡿ࠸ࡣ⁐ゎࡋ࡚⤖ྜ๣࡜ࡋ࡚స⏝ࡋ㸪
㧗ᐦᗘ࠿ࡘ㧗◳ᗘࡢ BIC ࡀᙧᡂࡉࢀࡿ㸬ᅗ 2 ࡟࢖ࢱࢻࣜ
⇕㔜㔞ศᯒ⤖ᯝ(ᅗ 3)࠿ࡽ㸪❅⣲㞺ᅖẼ୰ࡢỈศ࠾ࡼࡧ
BIC ࡢእほ෗┿ࢆ♧ࡍ㸬
᥹Ⓨศࡢᨺฟ࡟ࡼࡿ㉁㔞ῶᑡ࡟ࡘ࠸࡚㸪ࡑࢀࡒࢀ࢔ࣞࢽ
࢘ࢫ๎࠿ࡽᑟ࠿ࢀࡿᘧ(1)ࢆ㐺⏝ࡋ㸪ᅗ 4 ࡟♧ࡋࡓ㸬
§ 1 dm ·
ln¨
¸
© m dt ¹
ln A E
RT
(1)
ࡇࡇ࡛㸪m : Ỉศ࠶ࡿ࠸ࡣ᥹Ⓨศࡢṧ␃㉁㔞㸪t : ᫬㛫㸪
ᅗ ࢖ࢱࢻࣜእほ
A : 㢖ᗘᅉᏊ㸪E : άᛶ໬࢚ࢿࣝࢠ㸪R : Ẽయᐃᩘ㸪T : ᅗ ࢖ࢱࢻࣜ %,& እほ
ᗘࢆ♧ࡍ㸬
⾲ 1 ࡟㸪࢖ࢱࢻࣜ㸪ᮌ㉁࣌ࣞࢵࢺ(ᩘ✀ࡢᖹᆒ್)(12)࠾ࡼ
-5
ࡧ℡㟷Ⅳ(13)ࡢඖ⣲ศᯒ⤖ᯝࢆ♧ࡍ㸬࢖ࢱࢻࣜࡣ㸪ᮌ㉁࣌
㏆࠸್ࢆ♧ࡋ࡚࠸ࡿࡇ࡜ࡀࢃ࠿ࡿ㸬ࡇࡢ࢖ࢱࢻࣜࢆ BIC
࡟ຍᕤࡍࡿࡇ࡜࡛ᐦᗘࡣ 1300kg/m3 ⛬ᗘ࡜࡞ࡿࡀ㸪ࡇࢀ
3
ࡣ㏻ᖖࡢᮌ㉁࣌ࣞࢵࢺࡢᐦᗘ600kg/m ࡢ࠾ࡼࡑ2 ಸᙉ࡛
࠶ࡾ㸪࢚ࢿࣝࢠ࣮ᐦᗘࡣ࢖ࢱࢻࣜ BIC ࡢ᪉ࡀ኱ࡁ࠸㸬
ln(1/m·dm/dt)
ࣞࢵࢺࡼࡾࡶⅣ⣲๭ྜ㸪Ⓨ⇕㔞࡜ࡶ࡟ⱝᖸᑠࡉ࠸ࡀᴫࡡ
Volatile
-6
-7
-8
-9
-10
0.001
Water vapor
0.002
0.003
0.004
1/T
⾲ ࢖ࢱࢻࣜࡢඖ⣲ศᯒ⤖ᯝ
ᅗ Ỉศ࠾ࡼࡧ᥹Ⓨศࡢ࢔ࣞࢽ࢘ࢫࣉࣟࢵࢺ
࢖ࢱࢻࣜ
ᮌ㉁࣌ࣞࢵࢺ(12)
℡㟷Ⅳ(13)
17890
20300
32020
C [wt%]
47.72
50.3
77.22
H [wt%]
5.95
5.7
5.60
N [wt%]
0.47
0.22
1.31
Water [wt%]
6.11
7.7
-
GCVa
[kJ/kg]
Experimental result
Volatile matter
Water vapor
a : Gross Calorific Value
2.2 ࢖ࢱࢻࣜ BIC ࡢ⇕ศゎ≉ᛶ
࢖ࢱࢻࣜ BIC ࡢ⇕㔜㔞ศᯒ⤖ᯝࡢ౛ࢆᅗ 3 ࡟♧ࡍ㸬⇕
㔜㔞ศᯒ࡟ࡣ㸪♧ᕪ⇕ኳ⛗㸦┿✵⌮ᕤ TGD-5000RH ᆺ㸧
ࢆ⏝࠸㸪ヨᩱ㉁㔞 20mg㸪᪼ ㏿ᗘ 5K/min ࡛㸪✵Ẽ୰࠾
ࡼࡧ❅⣲㞺ᅖẼ୰࡟࡚ᐇ᪋ࡋࡓ㸬
ᅗ 3 ࡢ⤖ᯝࡼࡾ㸪
Ỉศ㸪
᥹Ⓨศ࠾ࡼࡧᅛᐃⅣ⣲ศࡣ㸪ࡑࢀࡒࢀ 10wt%, 70wt%࠾ࡼ
ᅗ Ỉศ࠾ࡼࡧ᥹Ⓨศᨺฟ≉ᛶ❅⣲㞺ᅖẼ୰
࢔ࣞࢽ࢘ࢫᘧ⟬ฟ್࡜ᐇ㦂್ࡢẚ㍑
ᅗ 4 ࡼࡾ㸪Ỉศ⵨Ⓨ࡜᥹Ⓨศᨺฟࡢάᛶ໬࢚ࢿࣝࢠ࣮
(E)࠾ࡼࡧ㢖ᗘᅉᏊ(A)ࡣࡑࢀࡒࢀ㸪Ỉศ࡟ᑐࡋ A=1.759
™1014 [1/s], E=107.7 [kJ/mol], ᥹Ⓨศ࡟ᑐࡋ A=3.372™103
[1/s] , E=73.40 [kJ/mol]ࢆᚓࡿ㸬ࡇࢀࡽࡢ್ࢆ⏝࠸ࡓ⇕㔜㔞
⚄ዉᕝ኱ᏛᕤᏛ◊✲ᡤᡤሗ ➨ ྕ
ศᯒ࡟࠾ࡅࡿ㉁㔞ῶᑡࡢண ್࡜㸪ᐇ㦂⤖ᯝࢆẚ㍑ࡋࡓ
⤖ᯝࢆᅗ 5 ࡟♧ࡍ㸬
ᅗࡼࡾ㸪
❅⣲㞺ᅖẼ୰ࡢ㉁㔞ῶᑡࡣ㸪
ࣆ࣮ࢡ್࡟ⱝᖸࡢ㐪࠸ࡣぢࡽࢀࡿࡶࡢࡢ㸪Ỉศ࠾ࡼࡧ᥹
Ⓨศࡢᨺฟ࡟࢔ࣞࢽ࢘ࢫᘧࢆ㐺⏝ࡍࡿࡇ࡜࡛ẚ㍑ⓗⰋࡃ
⾲⌧࡛ࡁࡿࡇ࡜ࡀࢃ࠿ࡿ㸬
㸱㸬࢖ࢱࢻࣜ BIC ࡢᇶ♏⇞↝≉ᛶ
D⾲㠃⇞↝ E᭷⅖⇞↝
3.1 ⇞↝ᐇ㦂⿦⨨
ᅗ %,& ࡢ⇞↝ᙧែ
࣎࢖࣮ࣛ⇞↝⅔ෆ࡟࠾ࡅࡿ⇞↝≧ែࢆ᝿ᐃࡋ㸪኱Ẽᅽ
ୗ࡛㧗 ✵Ẽὶ୰࡟⨨࠿ࢀࡓ࢖ࢱࢻࣜBIC ࡢ╔ⅆ࠾ࡼࡧ
㻝㻚㻜㻌
⇞↝ᣲືࢆㄪ࡭ࡓ㸬ᅗ 6 ࡟㸪౑⏝ࡋࡓᇶ♏⇞↝ᐇ㦂⿦⨨
㻜㻚㻤㻌
ࡋ㸪BIC ୗ➃㠃࡟ᡤᐃࡢ ᗘ(473㹼873K)࡟ண⇕ࡉࢀࡓ✵
Ẽࢆ྿ࡁ௜ࡅࡿ㸬✵Ẽὶ㔞ࡣ 550NL/min.࡟タᐃࡋࡓ㸬౪
⤥ࡍࡿண⇕✵Ẽ᮲௳ࡀᏳᐃࡋࡓᚋ࡟BIC ࢆ⇞↝⅔ෆ࡟ᢞ
ධࡋ㸪BIC ࡢ㉁㔞ῶᑡ㸪ୗ➃㠃 ᗘ(IR ࣓࢝ࣛィ )㸪࠾
ࡼࡧ BIC ㏆ഐ࢞ࢫ ᗘ(T/C ィ )ࢆィ ࡋࡓ㸬
㼁㼚㼎㼡㼞㼚㼠㻌㼒㼞㼍㼏㼠㼕㼛㼚㻌㻌㻌㻙
ᴫ␎ࢆ♧ࡍ㸬BIC ࢆෆᚄ 100mm ࡢ⇞↝⅔ෆ୰ኸ࡟ྞࡿ
㻠㻣㻟㻷
㻡㻠㻤㻷
㻡㻞㻟㻷
㻡㻣㻟㻷
㻜㻚㻢㻌
㻡㻥㻤㻷
㻢㻞㻟㻷
㻜㻚㻠㻌
㻤㻣㻟㻷
㻜㻚㻞㻌
㻣㻣㻟㻷
㻢㻣㻟㻷
㻜㻚㻜㻌
㻜
㻝㻜
㻞㻜
㻟㻜
㻠㻜
㻡㻜
㻢㻜
㻱㼘㼍㼜㼟㼑㼐㻌㼠㼕㼙㼑㻌㻌㻌㼙㼕㼚
DV
camera
PC
IR
camera
Zn-Se glass
Blower
Solid surface ignition
Window
(quartz glass)
T/C
(heater control)
Electric
heater
Flow
meter
1
0.8
0.6
1800
Gas-phase ignition
Unburnt fraction
1600
BIC bottom
surface
temperature
1400
1200
1000
0.4
800
0.2
600
Gas temperature
0
ᅗ %,& ᇶ♏⇞↝ᐇ㦂⿦⨨ᴫ␎
400
0
10
Elapsed time min
࢖ࢱࢻࣜ BIC ࢆண⇕✵Ẽ୰࡟࠾࠸ࡓሙྜ㸪BIC ୗ➃㠃
1
0.8
BIC ࡢ㉁㔞ῶᑡ࡬ࡢண⇕✵Ẽ ᗘࡢᙳ㡪ࢆㄪ࡭ࡓ⤖ᯝ
࠾࠸࡚ BIC ࡢ⇞↝ࡀほᐹࡉࢀ࡚࠸ࡿ㸬✵Ẽ ᗘ 473K ࡛
ࡣᅗ 3 ࡢ⇕ศゎ㛤ጞ ᗘ 450K ࡼࡾ㧗࠸✵Ẽ ᗘ᮲௳࡛
࠶ࡿࡀ㸪60min.௨ෆ࡟╔ⅆࡣぢࡽࢀ࡞࠿ࡗࡓ㸬✵Ẽ ᗘ
ࡀ 523K-573K ࡢሙྜ㸪᭷⅖⇞↝ࡢࡳࡀほᐹࡉࢀ㸪㉁㔞ῶ
ᑡࡢ໙㓄ኚ໬ࡣ୍ẁ࡛࠶ࡗࡓ㸬ࡇࢀ࡟ᑐࡋ㸪✵Ẽ ᗘࡀ
Unburnt fraction -
ࡀ㉥⇕ࡋ࡚⇞↝ࡍࡿ⾲㠃⇞↝(ᅗ 7 (a))㸪࠾ࡼࡧ BIC ඲య
ࡀⅆ⅖࡟ໟࡲࢀ࡚⇞↝ࡍࡿ᭷⅖⇞↝(ᅗ 7 (b))㸪ࡢ 2 ࡘࡢ
ࢆᅗ 8 ࡟♧ࡍ㸬ᅗ୰㸪ᛴ⃭࡞㉁㔞ῶᑡࡀぢࡽࢀࡿ㒊఩࡟
20
30
ᅗ ✵Ẽ ᗘࡀ㧗࠸.ሙྜࡢ╔ⅆᣲື
3.2 ࢖ࢱࢻࣜ BIC ࡢ╔ⅆᣲື
⇞↝ᙧែࡀほᐹࡉࢀࡿ㸬
Temperature K
T/C
Mechanical
scale
Unburnt fraction -
Counter
weight
ᅗ %,& ㉁㔞ῶᑡ࡬ࡢ✵Ẽ ᗘࡢᙳ㡪
Gas-phase ignition and
Solid surface ignition
1800
1600
Unburnt fraction
1400
BIC bottom
surface
temperature
0.6
0.4
1200
1000
800
Gas
temperature
0.2
Temperature K
Bio-coke
sample
Fulcrum
600
0
400
0
10
20
30
40
Elapsed time min
50
ᅗ ✵Ẽ ᗘࡀప࠸.ሙྜࡢ╔ⅆᣲື
598K-873K ࡢሙྜ࡟ࡣ㸪᭱ึ࡟⾲㠃⇞↝㸪ࡑࡢᚋ࡟᭷⅖
⇞↝࡜㉁㔞ῶᑡࡢ໙㓄ኚ໬ࡀ஧ẁ࠶ࡿࡇ࡜ࡀ☜ㄆࡉࢀ㸪
✵Ẽ ᗘࡀ㧗࠸(Ӎ598K)ሙྜ㸪ᅗ 9 ࡟ぢࡽࢀࡿࡼ࠺࡟㸪
౪⤥✵Ẽ ᗘ࡟ࡼࡾ㉁㔞ῶᑡࡢ᫬㛫ᒚṔࡀ␗࡞ࡿࡇ࡜ࡀ
⾲㠃╔ⅆ(⣙ 9min.᫬)ࡀẼ┦╔ⅆ(⣙ 17min.᫬)࡟ඛ⾜ࡋ࡚
ࢃ࠿ࡿ㸬
⏕ࡌࡓ㸬୍᪉㸪✵Ẽ ᗘࡀప࠸(ӌ573K)ሙྜ㸪ᅗ 10 ࡟ぢ
㧗ᐦᗘࣂ࢖࣐࢜ࢫࣈࣜࢣࢵࢺࡢ╔ⅆ⇞↝≉ᛶ
ࡽࢀࡿࡼ࠺࡟㸪㛗࠸ຍ⇕᫬㛫ࢆ⤒ࡓᚋ㸪⾲㠃╔ⅆ࡜Ẽ┦
⅖⇞↝㛤ጞ┤ᚋ࡟࠾࠸࡚㢧ⴭ࡛࠶ࡿ㸬ࡇࢀࡽࡣ㸪✵Ẽ ╔ⅆࡀ࡯ࡰྠ᫬(⣙ 38min.᫬)࡟Ⓨ⏕ࡍࡿࡢࡀほᐹࡉࢀࡓ㸬
ᗘࡀప࠸᪉ࡀ᭷⅖⇞↝᫬㸪࡜ࡃ࡟᭷⅖⇞↝㛤ጞ┤ᚋ࡟࠾
ࡇࡢࡼ࠺࡟౪⤥✵Ẽ ᗘ࡟ࡼࡾ╔ⅆᙧែࡀ␗࡞ࡿࡢࡣ㸪
࠸࡚⇕ศゎ࢞ࢫᨺฟ㏿ᗘࡀ኱ࡁ࠸ࡇ࡜ࢆព࿡ࡋ࡚࠾ࡾ㸪
BIC ⾲㠃㓟໬཯ᛂ࡟ࡼࡿ⾲㠃 ᗘୖ᪼ࡀ㛤ጞࡉࢀࡿࡲ࡛
ୖ㏙ࡢ╔ⅆᙧែࡀ✵Ẽ ᗘ࡟ࡼࡾ␗࡞ࡿせᅉ࡜ࡶྜ⮴ࡍ
࡟㸪BIC ෆ㒊࡟࡝ࢀࡔࡅࡢ㡿ᇦࡢண⇕ᒙࡀᙧᡂࡉࢀࡿ࠿
ࡿ㸬ࡍ࡞ࢃࡕ㸪᭷⅖⇞↝㛤ጞ๓ࡢண⇕㡿ᇦࡢᗈࡉࡀ᭷⅖
࡟ࡼࡿ࡜⪃࠼ࡽࢀ࡚࠸ࡿ(10-11)㸬✵Ẽ ᗘࡀ㧗࠸ሙྜ࡟ࡣ㸪
⇞↝᫬ࡢ⇕ศゎ࢞ࢫᨺฟ㏿ᗘ㸪ࡦ࠸࡚ࡣ㉁㔞ῶᑡ㏿ᗘ࡟
኱ࡁ࡞⇕ὶ㏿࡟ࡼࡾ BIC ⾲㠃 ᗘࡀୖ᪼ࡋࡸࡍ࠸ࡀ㸪
ᙳ㡪ࢆ୚࠼ࡿࡶࡢ࡜⪃࠼ࡽࢀࡿ㸬
BIC ෆ㒊࡟ࡣ⾲㠃㏆ഐࡢ⊃࠸ண⇕㡿ᇦࡋ࠿ᙧᡂࡉࢀ࡞࠸㸬
⇕ⓗ࡟ཌ࠸ࣂ࢖࣐࢜ࢫ⇞ᩱࡢ⇞↝࡟㛵ࡋ࡚㸪ᚑ᮶ᗄࡘ
ࡇࢀ࡟ࡼࡾ㸪ຍ⇕㛤ጞᚋࡢ᪩࠸᫬ᮇ࡟⾲㠃╔ⅆࡀ⏕ࡌࡿ
࠿ࡢ◊✲ࡀ࡞ࡉࢀ࡚࠸ࡿ(14-15)ࡀ㸪ண⇕㐣⛬ࡢ㐪࠸࡟ࡼࡿ
ࡀ㸪BIC ෆ㒊 ᗘୖ᪼ࡀ㐜ࢀࡿࡇ࡜࠿ࡽẼ┦╔ⅆࢆ⏕ࡌ
⇞ᩱෆ㒊 ᗘศᕸࡢᙳ㡪࡟㛵ࡋ࡚⪃៖ࡉࢀ࡚࠸ࡿࡶࡢࡣ
ࡿࡢ࡟༑ศ࡞⇕ศゎ࢞ࢫࡀᨺฟࡉࢀࡎ㸪Ẽ┦╔ⅆ࡟⮳ࡽ
ぢࡽࢀ࡞࠸㸬ୖ࡛㏙࡭ࡓࡼ࠺࡟㸪㧗ᐦᗘ㸪኱ࡁ࡞ᑍἲ࡞
࡞࠸ࠋ୍᪉㸪✵Ẽ ᗘࡀప࠸ሙྜ࡟ࡣ㸪BIC ⾲㠃㓟໬࠾
࡝⇕ⓗ࡟ཌ࠸ࣂ࢖࣐࢜ࢫ⇞ᩱࡢ╔ⅆ࠾ࡼࡧ⇞↝㐣⛬࡟ண
ࡼࡧ⾲㠃 ᗘୖ᪼࡟᫬㛫ࡀ࠿࠿ࡿࡇ࡜࠿ࡽ㸪㛗࠸᫬㛫ࢆ
⇕ᒚṔࡀᑡ࡞࠿ࡽࡎᙳ㡪ࢆ୚࠼ࡿࡓࡵ㸪ࡇࡢᙳ㡪࡟ࡘ࠸
࠿ࡅ࡚ BIC ෆ㒊ࡢᗈ࠸㡿ᇦࡀண⇕ࡉࢀࡿ㸬ࡑࡋ࡚㸪ࡦ࡜
࡚༑ศ࡟⪃៖ࡍࡿᚲせࡢ࠶ࡿࡇ࡜ࡀࢃ࠿ࡿ㸬
ࡓࡧ⾲㠃㓟໬཯ᛂࡀ㛤ጞࡉࢀࡿ࡜BIC ෆ㒊ࡢᗈ࠸⠊ᅖࡀ
⇕ศゎ ᗘࢆ㉸࠼㸪Ẽ┦╔ⅆࡀ⏕ࡌࡿࡢ࡟༑ศ࡞㔞ࡢ⇕
㸲㸬࢖ࢱࢻࣜ BIC ࡢ⇕ศゎ࢞ࢫᨺฟ≉ᛶ
ศゎ࢞ࢫࡀᨺฟࡉࢀࡿ㸬ࡇࡢ⤖ᯝ࠿ࡽ㸪✵Ẽ ᗘࡀప࠸
BIC ⇕ศゎ࢞ࢫ୰ࡢỈศ࠾ࡼࡧ᥹Ⓨศ๭ྜࡣẼ┦╔ⅆ
ሙྜ࡟ࡣ⾲㠃╔ⅆ࡜Ẽ┦╔ⅆࡀ࡯ࡰྠ᫬࡟⏕ࡌࡿ㸬ࡇࢀ
ࡢࡋ᫆ࡉࡸ⇞↝㏿ᗘ➼࡟ᙳ㡪ࢆ୚࠼ࡿࡇ࡜࠿ࡽ㸪Ỉศ࡜
ࡽຍ⇕࡟ᑐࡍࡿBIC ෆ㒊 ᗘศᕸࡢᙧᡂ㐣⛬࡟BIC ࡢ⇕
᥹Ⓨศࡑࢀࡒࢀࡢᨺฟ㏿ᗘࢆูࠎ࡟ぢ✚ࡶࡿࡇ࡜ࡣ BIC
ᣑᩓ⋡ (Ș = Ȣ/ȨC, Ȣ: ⇕ఏᑟ⋡㸪Ȩ: ᐦᗘ㸪C: ẚ⇕)
ࡢ╔ⅆ࠾ࡼࡧ⇞↝≉ᛶࢆᢕᥱࡍࡿୖ࡛ព⩏῝࠸㸬BIC ຍ
ࡀᐤ୚ࡋ࡚࠾ࡾ㸪ࡉࡽ࡟ࡇࢀ࡟ࡣ BIC ࡢᣢࡘ㧗ᐦᗘ࡜࠸
⇕࡟࡜ࡶ࡞࠺Ỉศ࡜᥹Ⓨศࡑࢀࡒࢀࡢᨺฟ≉ᛶࢆ⢭ᗘࡼ
࠺≉ᛶࡀᙳ㡪ࡋ࡚࠸ࡿࡶࡢ࡜⪃࠼ࡽࢀࡿ㸬
ࡃ⾲⌧ฟ᮶ࡿࣔࢹࣝᵓ⠏ࢆヨࡳ㸪ࡉࡽ࡟ࡑࡢࣔࢹࣝࢆ⏝
࠸࡚BIC ྵỈ⋡ࡢỈศ࡜᥹Ⓨศࡑࢀࡒࢀࡢᨺฟ≉ᛶ࡬ࡢ
3.3࢖ࢱࢻࣜ BIC ᭷⅖⇞↝᫬ࡢ㉁㔞ῶᑡ㏿ᗘ
ᙳ㡪ࢆㄪ࡭ࡓ㸬
Ẽ┦╔ⅆ࡟⥆࠸࡚ぢࡽࢀࡿ㸪᭷⅖⇞↝᫬ࡢ BIC ㉁㔞ῶ
4.1 ᑠᆺ UFA(Universal Flammability Apparatus)ᐇ㦂⿦⨨
ᑡ㏿ᗘ࡬ࡢ౪⤥✵Ẽ ᗘࡢᙳ㡪ࢆㄪ࡭ࡓ㸬᭷⅖⇞↝᫬ࡢ
BIC ヨᩱࢆ❅⣲㞺ᅖẼ୰࡟࠾࠸࡚⇕ὶ᮰୍ᐃ࡟࡚ຍ⇕
BIC ㉁㔞ῶᑡ㏿ᗘࡣ㸪BIC ࠿ࡽࡢ⇕ศゎ࢞ࢫᨺฟ㏿ᗘ࡜
ࡋࡓሙྜࡢ㉁㔞ῶᑡࢆㄪ࡭ࡿࡓࡵ㸪ᑠᆺ UFA(16)ᐇ㦂⿦⨨
ᐦ᥋࡟㛵㐃ࡋ࡚࠸ࡿ࡜⪃࠼ࡽࢀࡿ㸬ᅗ 11 ࡟㸪᭷⅖⇞↝᫬
ࢆ⏝࠸࡚ຍ⇕ᐇ㦂ࢆᐇ᪋ࡋࡓ㸦ᅗ 12㸧
㸬BIC ୗ➃㠃࠿ࡽ
ࡢ㉁㔞ῶᑡ㏿ᗘࡢኚ໬ࢆ♧ࡍ㸬
᥇ྲྀࡋࡓヨᩱ㸦ȭ20mm™10mm㸧ࢆእᚄ 35mm㸪ෆᚄ
33mm ࡢࢫࢸࣥࣞࢫ〇ṇ᪉ᙧヨᩱ࣍ࣝࢲ࣮୰ኸ࡟㸪᩿⇕
40
35
30
Mass loss rate
g/min
573K
25
673K
ᮦࢆ௓ࡋ࡚ᅛᐃࡋࡓ㸬ヨᩱୖ㒊࡟タ⨨ࡉࢀࡓࢱࣥࢢࢫࢸ
873K
773K
673K
573K
523K
ࣥࣛࣥࣉࣄ࣮ࢱ࡟࡚ BIC ヨᩱ⾲㠃ࢆຍ⇕ࡋ㸪㟁Ꮚኳ⛗࡟
ࡼࡾヨᩱࡢ㉁㔞ῶᑡࢆ ᐃࡋࡓ㸬
ணࡵ Gardon ᆺ⇕ὶ᮰ィ
ࢆ⏝࠸࡚ຍ⇕㠃࡟ධᑕࡍࡿ⇕ὶ᮰ࢆ᳨㔞ࡋࡓ㸬ࢧࣥࣉࣝ
523K
773K
20
࣍ࣝࢲ࣮࿘ᅖࢆ▼ⱥ⟶࡛そ࠸㸪ヨᩱୗ᪉ࡼࡾ❅⣲࢞ࢫ
873K
15
㸦50NL/min.㸧ࢆ౪⤥ࡍࡿࡇ࡜࡛ BIC ヨᩱࡢእẼ࡟ࡼࡿ
㓟໬ࢆ㜵࠸ࡔ㸬
10
Radiant
heater
5
Sample
0
1.0
0.8
0.6
0.4
0.2
Unburnt mass fraction of the fuel
0.0
Sample
MUF
Quartz tube
ᅗ ᭷⅖⇞↝᫬ࡢ㉁㔞ῶᑡ㏿ᗘ࡬ࡢ✵Ẽ ᗘࡢᙳ㡪
✵Ẽὶ㔞 /PLQ
Nitrogen
ᅗ 11 ࡼࡾ㸪᭷⅖⇞↝᫬ࡢ㉁㔞ῶᑡ㏿ᗘࡣ㸪౪⤥✵Ẽ ᗘࡀప࠸࡯࡝኱ࡁ࠸ࡇ࡜ࡀࢃ࠿ࡿ㸬ࡇࡢഴྥࡣ࡜ࡃ࡟᭷
Insulator
Sample
holder
Mechanical
scale
ᅗ ᑠᆺ 8)$ ᐇ㦂⿦⨨ᴫ␎
⚄ዉᕝ኱ᏛᕤᏛ◊✲ᡤᡤሗ ➨ ྕ
4.2 ⇕ศゎ࢞ࢫᨺฟ≉ᛶࡢゎᯒࣔࢹࣝ
ᅗ 14 ࡟♧ࡍ㸬ᮏ◊✲࡛౑⏝ࡋࡓ BIC ヨᩱࡣ᭷㝈ࡢ㛗ࡉ
෇ᰕ BIC ヨᩱࡢ∦ഃ➃㠃ࢆ㍽ᑕຍ⇕ࡋࡓ㝿ࡢ㸪ヨᩱ࠿
㸦10 mm㸧ࢆᣢࡕ㸪࠿ࡘỈศࢆ⣙ 10 wt%⛬ᗘྵ᭷ࡍࡿ㸬
ࡽࡢỈศ࠾ࡼࡧ᥹Ⓨศᨺฟࢆぢ✚ࡶࡿ୍ḟඖゎᯒࣔࢹࣝ
Ỉศࡢ⵨Ⓨࡍࡿ ᗘ 373 K ఩⨨ࡢ᫬㛫᥎⛣ࢆぢࡿ࡜㸪ヨ
ࢆసᡂࡋ㸪ᑠᆺ UFA ᐇ㦂ࢆᶍᨃࡍࡿᩘ್ィ⟬ࢆ⾜ࡗࡓ㸬
ᩱ඲యࡀ 373 K ௨ୖ࡟ຍ⇕ࡉࢀࡿࡲ࡛ࡢ᫬㛫ࡍ࡞ࢃࡕヨ
࿘ᅖࢆ᩿⇕ࡉࢀࡓヨᩱࡢ∦ഃ➃㠃㸦Ȯ= 0 mm㸧ࢆ୍ᐃࡢ
ᩱ୰ࡢỈศࡀ⵨Ⓨࡍࡿࡲ࡛ࡢ᫬㛫ࡣ࠾ࡼࡑ 4.7 min.࡛࠶
⇕ὶ᮰࡛ຍ⇕ࡋ㸪BIC ヨᩱෆ㒊 ᗘୖ᪼㸪Ỉศ࠾ࡼࡧ᥹
ࡿࡇ࡜ࡀࢃ࠿ࡿ㸬
ࡲࡓ 4.7 min.⤒㐣ᚋ࡟ࡣᛴ⃭࡞ヨᩱ ᗘ
Ⓨศᨺฟࢆぢ✚ࡶࡗࡓ㸬ヨᩱࢧ࢖ࢬࡣ UFA ᐇ㦂࡜ྠᵝȭ
ୖ᪼ࡀぢࡽࢀࡿ㸬ࡇࡢࡇ࡜࠿ࡽ㸪᭷㝈㛗ࡉࡢ BIC ヨᩱࢆ
20mm™10mm ࡢ෇ᰕᙧ≧㸪BIC ึᮇᐦᗘȨ = 1300 kg/m3㸪
ຍ⇕ࡍࡿሙྜ㸪ヨᩱ୰࡟Ỉศࡀṧࡗ࡚࠸ࡿ㛫ࡣヨᩱෆ㒊
BIC ึᮇྵỈ⋡ MC = 11.1 %࡜ࡋࡓ㸬ゎᯒ࡟ࡣ௨ୗ࡟♧
ࡢ ᗘୖ᪼ࡀ⦆ࡸ࠿࡛࠶ࡿࡀ㸪Ỉศࡀᢤࡅࡁࡗࡓᚋ࡟ᛴ
ࡍ௬ᐃࢆ⏝࠸ࡓ㸬(a) ࣔࢹࣝࡣ୍ḟඖ࡜ࡋ࡚ᢅ࠸㸪༙ᚄ
⃭࡞ ᗘୖ᪼ࡀぢࡽࢀࡿࡼ࠺࡟࡞ࡿࡇ࡜ࡀศ࠿ࡿ㸬௬࡟
᪉ྥ࡬ࡢ ᗘศᕸࡣ⏕ࡌ࡞࠸㸬(b) ヨᩱ࿘ᅖ㸦࡜ࡃ࡟ຍ
BIC ヨᩱࡀ↓㝈㛗ࡉࢆ᭷ࡋ࡚࠸ࡿሙྜ࡟ࡣ㸪⦆ࡸ࠿࡞ෆ
⇕㠃㸧ࡢ࿘ᅖ࢞ࢫὶࢀࡢᙳ㡪ࡣ↓どࡍࡿ㸬(c) Ỉศࡢ⵨
㒊 ᗘୖ᪼ࡀ⥆ࡁᨺฟ࢞ࢫ㔞ࡣ୍ᐃࡢ್ࢆ⥔ᣢࡍࡿࡶࡢ
Ⓨ₯⇕ࡣ⪃៖ࡍࡿࡀ㸪⇞ᩱࡢ⇕ศゎ࠾ࡼࡧ㓟໬࡟࡜ࡶ࡞
࡜ண᝿ࡉࢀࡿ㸬BIC ヨᩱࡢỈศᨺฟ᏶஢ᚋࡢᛴ⃭࡞࢞ࢫ
࠺཯ᛂ⇕ࡣ⪃៖ࡋ࡞࠸㸬(d) Ỉศ࠾ࡼࡧ᥹Ⓨศࡢᨺฟ㏿
ᨺฟ㏿ᗘࡢቑ኱ࡣヨᩱ㛗ࡉࡀ᭷㝈࡛࠶ࡿࡇ࡜࡟㉳ᅉࡋ࡚
ᗘ㸦⇕ศゎࣃ࣓࣮ࣛࢱ㸧ࡣࡑࢀࡒࢀ࢔ࣞࢽ࢘ࢫࡢᘧ࡛୚
࠸ࡿ࡜⪃࠼ࡽࢀࡿࡓࡵ㸪௨㝆ࡢ㆟ㄽ࡛ࡣࡇࡢᛴ⃭࡞࢞ࢫ
࠼㸪ྛࠎ࢞ࢫ໬ࡍࡿ࡜┤ࡕ࡟ BIC ຍ⇕㠃࠿ࡽᨺฟࡉࢀࡿ
ᨺฟ㏿ᗘቑ኱ࡀࡳࡽࢀࡿ௨๓ࡢ᫬㛫࡟ࡘ࠸࡚ᢅ࠺㸬
㸦ణࡋᨺฟ࢞ࢫࡣධᑕ⇕ὶ᮰࡟ࡣᙳ㡪ࢆ୚࠼࡞࠸㸧
㸬(e)
Calculation result
⇕ศゎ࢞ࢫᨺฟ࡟ࡼࡾヨᩱ㉁㔞ࡣῶᑡࡍࡿࡀ㸪య✚ࡣ୙
ኚ࡜ࡍࡿ㸦ᐦᗘࡀῶᑡࡍࡿ㸧
㸬(f) ヨᩱࡢ⇕≀ᛶ್ࡢ ᗘ
Experimental
result
౫Ꮡᛶࡣ⪃៖ࡋ࡞࠸㸬(g) ヨᩱຍ⇕㠃⾲㠃࡟ࡣ⅊Ⰽయ㏆
ఝࢆ㐺⏝ࡍࡿ㸬ヨᩱෆ㒊ࡢ࢚ࢿࣝࢠ࣮ಖᏑᘧ㸪Ỉศ࡜᥹
Ⓨศ࡟㛵ࡍࡿ㉁㔞ಖᏑᘧࢆ⪃៖ࡋ㸪㝧ゎἲࢆ⏝࠸࡚ᘧࢆ
㞳ᩓ໬ࡋィ⟬ࢆ⾜ࡗࡓ㸬ቃ⏺᮲௳ࡣຍ⇕㠃ഃ࡛ࡣ㍽ᑕධ
⇕࡜ᨺᑕ⇕ᦆኻࢆ⪃៖ࡋ㸦Ȣ㸹⇕ఏᑟ⋡㸪T㸹 ᗘ㸪Ȝ㸹
ᅗ ᐇ㦂⤖ᯝ࡜ィ⟬⤖ᯝࡢẚ㍑
BIC ヨᩱ⾲㠃ࡢᨺᑕ⋡(0.95 ࡜௬ᐃ)㸪q㸹ຍ⇕⇕ὶ㏿㸪Ȫ㸹
࣎ࣝࢶ࣐ࣥᐃᩘ㸪Ts㸹BIC ヨᩱຍ⇕㠃 ᗘ㸧
㸪௚➃㠃ഃ࡛
ࡣ᩿⇕࡜ࡋࡓ㸬
ᮏ◊✲࡛౑⏝ࡋࡓ࢖ࢱࢻࣜ BIC ࡢ⇕ఏᑟ⋡(Ȣ)࠾ࡼ
ࡧẚ⇕(C)ࡣᮍ▱࡛࠶ࡿࡀ㸪ḟ࡟♧ࡍ UFA ᐇ㦂⤖ᯝ࡜ᮏ
ゎᯒࣔࢹࣝࢆ⏝࠸ࡓィ⟬⤖ᯝࡢ⇕ศゎ࢞ࢫᨺฟࡢࣆ࣮ࢡ
᫬㛫ࡀ୍⮴ࡍࡿࡼ࠺୚࠼ࡓ㸬
ࡇࡢ㝿㸪
ࡇࢀࡽࡢ≀ᛶ್ࡣ㸪
(17)
ᮌᮦ࡟ᑐࡋ࡚▱ࡽࢀ࡚࠸ࡿ್ ࡢ⠊ᅖ࡟⣡ࡲࡿࡼ࠺࡟୚
࠼㸪Ȣ=2.200™10-4 W/mmK㸪C=1300 J/kgK ࡜ࡋࡓ㸬
Distance from heated face mm
10
ヨᩱෆ㒊ࡢỈศࡀ⵨Ⓨࡋࡁࡿ
ࡲ࡛ࡢ᫬㛫 (§ 4.7 min.)
9
8
7
6
5
4
3
2
923 K
1
0
0
5
10
Time min.
4.3 ⇕ศゎ࢞ࢫᨺฟ㏿ᗘࡢ᫬㛫ኚ໬
ᑠᆺ UFA ࢆ⏝࠸ࡓຍ⇕ᐇ㦂⤖ᯝ࡜㸪ᮏ◊✲࡛⏝࠸ࡓゎ
ᅗ %,& ヨᩱෆ㒊 ᗘኚ໬N:P
ᅗ 15 ࡟㸪BIC ヨᩱ࠿ࡽࡢ᥹Ⓨศ࠾ࡼࡧỈศᨺฟ㏿ᗘࡢ
ᯒࣔࢹࣝ࡟ࡼࡿィ⟬⤖ᯝࡢẚ㍑ࢆ⾜ࡗࡓ㸬ᅗ 13 ࡟㸪ຍ⇕
ィ⟬⤖ᯝࢆ♧ࡍ㸬
ຍ⇕㛤ጞᚋࡍࡄ࡟Ỉศࡢᨺฟࡀጞࡲࡾ㸪
⇕ὶ᮰ 50 kW/m2 ࡢሙྜࡢẚ㍑ࢆ♧ࡍ㸬ィ⟬࡟ࡼࡾᚓࡽࢀ
ࡑࡢᚋ⦆ࡸ࠿࡟ᨺฟ㔞ࡣῶᑡࡋ࡚࠸ࡿ㸬᥹ⓎศᨺฟࡣỈ
ࡓ㉁㔞ῶᑡࡣ㸪ᑠᆺ UFA ᐇ㦂⤖ᯝ࡜ẚ㍑ࡋ࡚ᨺฟࡢ㛤ጞ
ศࡢᨺฟ࡟ࢃࡎ࠿࡟㐜ࢀ࡚㛤ጞࡋ㸪᪩࠸᫬ᮇ㸦1.8 min.
᫬ᮇ࠾ࡼࡧᨺฟࣆ࣮ࢡ࡟ⱝᖸࡢᕪ␗ࡣぢࡽࢀࡿࡶࡢࡢ㸪
⛬ᗘ㸧࡟ᑠࡉ࡞ࣆ࣮ࢡࢆ♧ࡋࡓᚋ࡟⦆ࡸ࠿࡟ῶᑡࡋ࡚࠸
ẚ㍑ⓗഴྥࢆ⾲⌧ฟ᮶࡚࠸ࡿࡇ࡜ࡀࢃ࠿ࡿ㸬BIC ヨᩱ࠿
ࡿ㸬᥹Ⓨศ㸭Ỉศࡢᨺฟ㏿ᗘẚࢆྠ᫬࡟♧ࡋࡓࡀ㸪ຍ⇕
ࡽᨺฟࡉࢀࡿ࢞ࢫ㸦Ỉศ㸩᥹Ⓨศ㸧㔞ࡣ㸪ຍ⇕㛤ጞ࠿ࡽ
㛤ጞᚋ 1.8 min.࠿ࡽ 4 min.ࡢ㛫࡟⥲࢞ࢫᨺฟ㏿ᗘࡣ⦆ࡸ
࠶ࡿᮇ㛫ࡣẚ㍑ⓗ୍ᐃ࡟㏆࠸್ࢆ♧ࡍࡀ㸪ࡑࡢᚋ㸦ᅗ 13㸪
࠿࡟ῶᑡࡋ࡚࠸ࡿ୍᪉࡛᥹Ⓨศ㸭Ỉศẚࡣ࡯ࡰ୍ᐃ࡛࠶
4.7 min.㸦ィ⟬್㸧⤒㐣ᚋ㸧ᛴ⃭࡟ቑຍࡋࣆ࣮ࢡࢆ♧ࡍ㸬
ࡿࡇ࡜㸪ࡍ࡞ࢃࡕᨺฟ࢞ࢫ୰ࡢỈศ๭ྜࡣ࡯ࡰ୍ᐃ࡛࠶
ྠ᮲௳࡟࠾ࡅࡿ BIC ヨᩱෆ㒊 ᗘࡢኚ໬㸦ィ⟬⤖ᯝ㸧ࢆ
ࡿࡇ࡜ࡀࢃ࠿ࡿ㸬
14
14
12
12
10
10
8
8
Volatile
6
6
Total
4
4
Volatile / Water ratio
2
࢞ࢫࡣ㸪BIC ᮏ᮶ࡢ᥹Ⓨศ㸭Ỉศ๭ྜ࠿ࡽண᝿ࡉࢀࡿࡼ
ࡾࡶ╔ⅆ㸪⇞↝ࡋ㞴࠸⤌ᡂ࡛࠶ࡿ࡜⪃࠼ࡽࢀࡿ㸬
㸳㸬⤖ゝ
2
࢖ࢱࢻࣜࢆཎᩱ࡜ࡍࡿ㧗ᐦᗘᅛయࣂ࢖࣐࢜ࢫࣈࣜࢣࢵ
Water
0
0
0
2
4
6
8
10
ࢺ(BIC)ࡢ⇕ศゎ㸪╔ⅆ࠾ࡼࡧ⇞↝≉ᛶࢆㄪ࡭ࡓ㸬ࡑࡢ⤖
Time min.
ᅗ ᨺฟ࢞ࢫ୰ࡢ᥹Ⓨศ࠾ࡼࡧỈศN:P
12
Volatile / Water ratio
10
10
8
8
6
6
Volatile
4
Total
2
4
ࡧ⇞↝≉ᛶ࡟኱ࡁࡃᙳ㡪ࡍࡿࡇ࡜ࡀࢃ࠿ࡗࡓ㸬௒ᚋ BIC
Volatile / Water ratio
Mass loss rate mg/s
12
ࡢ฼ά⏝ࢆ㐍ࡵࡿୖ࡛㸪ࡇࢀࡽ⇕≉ᛶ࡜ BIC 〇㐀ୖࡢ≉
ᛶ࠿ࡽ㸪
᭱㐺࡞〇㐀࣭⇞↝ᙧែࢆㄪᰝࡍࡿᚲせࡀ࠶ࢁ࠺㸬
2
Water
0
ཧ⪃ᩥ⊩
0
0
2
4
6
8
10
12
14
16
ᯝ㸪╔ⅆ๓ࡢຍ⇕ᒚṔ(ຍ⇕㏿ᗘ)ࡀ BIC ෆ㒊 ᗘศᕸ㸪
ᨺฟ࢞ࢫᡂศ(᥹Ⓨศ㸭Ỉศ๭ྜ)ࡦ࠸࡚ࡣ╔ⅆᙧែ࠾ࡼ
14
14
࠸ࡇ࡜࠿ࡽ㸪ᮏ◊✲ࡢ⠊ᅖ࡛ࡣࡇࡢᮇ㛫࡟ᚓࡽࢀࡿᨺฟ
Volatile / Water ratio
Mass loss rate
mg/s
㧗ᐦᗘࣂ࢖࣐࢜ࢫࣈࣜࢣࢵࢺࡢ╔ⅆ⇞↝≉ᛶ
(1) C.Wang, F.Wang, Q.Yang, R.Liang,”Biomass and Bioenergy” 33,
18
Time min.
18
18
16
16
Volatile/Water ratio
14
14
12
12
Volatile
10
10
8
8
6
6
Total
4
2
4
28-3 (2009), pp.427-434.
(3) T.Honjo, T.Ida, M.Fuchihata, H.Sano,”Journal of the Japan Institute
of Energy” 84 (2005), pp.142-148.
(4) P.Gilbert, C.Ryu, V.Sharifi, J.Swithenbank,”Fuel” 88 (2009), pp.
1491-1497.
2
Water
0
0
0
1
2
3
4
5
6
7
(2009), pp. 50-56.
(2) S.Sadaka, S.Negi,”Environmental Progress and Sustainable Energy”
Volatile / Water ratio
Mass loss rate mg/s
ᅗ ᨺฟ࢞ࢫ୰ࡢ᥹Ⓨศ࠾ࡼࡧỈศN:P (5) O.C.Chin, K.M.Siddiqui,”Biomass and Bioenergy” 18 (2000), pp.
8
Time min.
ᅗ ᨺฟ࢞ࢫ୰ࡢ᥹Ⓨศ࠾ࡼࡧỈศN:P
4.4 ⇕ศゎ࢞ࢫᨺฟ㏿ᗘ࡬ࡢຍ⇕⇕ὶ᮰ࡢᙳ㡪
223-228.
(6) D.Singh,”Agricultural wastes” 13 (1985), pp.189-196.
(7) Ọᶫ㸪ᮧୖ㸪㞧㈡㸪”᪥ᮏ⇞↝Ꮫ఍ㄅ (in Japanese)” 51 (158)
ᅗ 16㸪17 ࡟ 25 kW/m2 ࠾ࡼࡧ 100 kW/m2 ࡢィ⟬⤖ᯝࢆ
2
(2009), pp.310-317.
ࡑࢀࡒࢀ♧ࡍ㸬ຍ⇕⇕ὶ᮰ࡀᑠࡉ࠸ᅗ 16㸦25 kW/m 㸧࡛
(8) T.Ida, A.Nakanishi, Osaka TLO, Patent No. 4088933 (2006) Japan.
ࡣᅗ 15㸦50 kW/m2㸧࡜ࡣ␗࡞ࡾ᥹Ⓨศᨺฟࡀ⦆ࡸ࠿࡟㛤
(9) ఀᮾ㸪㓇஭㸪஭⏣㸪⸨⏣㸪”᪥ᮏ⇞↝Ꮫ఍ㄅ” ➨ 53 ᕳ 164 ྕ
ጞࡉࢀ᪩࠸᫬ᮇࡢ᥹Ⓨศᨺฟ㏿ᗘࡢࣆ࣮ࢡࡣぢࡽࢀ࡞࠸㸬
(2009), pp.1-6.
2
ࡇࢀࡣ 25 kW/m ࡢሙྜ࡟ࡣຍ⇕⇕ὶ᮰ࡀᑠࡉࡃ㸪BIC ຍ
(10) H.Ito, Y.Sakai, T.Ida, Y.Nakamura, O.Fujita,“Proc. ASME/JSME 8th
⇕㠃௜㏆ࡢ ᗘୖ᪼ࡀ㐜ࢀࡿࡇ࡜࡟ࡼࡾ᥹Ⓨศ࢞ࢫᨺฟ
Thermal Engineering Joint Conference” (2011),AJTEC2011-44145.
ࡶ㐜ࢀࡿࡓࡵ࡜⪃࠼ࡽࢀࡿ㸬ࡇࡢ⤖ᯝ㸪ᨺฟ࢞ࢫ୰ࡢ᥹
(11) H.Ito, Y.Sakai, T.Ida, Y.Nakamura, O.Fujita, “J. Thermal Sci. Tech.”
Ⓨศ㸭Ỉศẚࡣ᭱ึᑠࡉࡃ㸪ࡑࡢᚋᚎࠎ࡟ୖ᪼ࡍࡿࡇ࡜
Vol.6, No.1 (2011), pp.111-122.
࡟࡞ࡿ㸬୍᪉㸪ຍ⇕⇕ὶ᮰ࡀ኱ࡁ࠸ᅗ 17 ࡛ࡣ㸪ຍ⇕㛤ጞ
(12) I.Obernberger, G.Thek, “Biomass and Bioenergy” 27 (2004),
ᚋࡢ᪩࠸᫬ᮇ࡟᥹Ⓨศ࢞ࢫᨺฟࡢ኱ࡁ࡞ࣆ࣮ࢡࡀ⌧ࢀ㸪
pp.653-669.
⥲࢞ࢫᨺฟ㏿ᗘࡶ኱ࡁࡃ࡞ࡿ㸬ࡇࡢ᫬㸪᥹Ⓨศ࢞ࢫᨺฟ
(13) E.Kharbat, K.Annamalai, C.Gopalakrishnan, “Combust. Flame”
㛤ጞᚋࡢ᥹Ⓨศ㸭Ỉศẚࡀ᫬㛫࡟ࡼࡽࡎ࡯ࡰ୍ᐃࡢ್࡛
100 (1995), pp.413-421.
᥎⛣ࡍࡿ㸪ࡍ࡞ࢃࡕᨺฟ࢞ࢫ୰ࡢỈศ๭ྜࡣ኱ࡁࡃኚ໬
(14) M.J.Hagge, K.M.Bryden, “Chem. Eng. Science” 57 (2002),
ࡋ࡚࠸࡞࠸㸬ࡇࡢ࡜ࡁࡢ᥹Ⓨศ㸭Ỉศẚࡣ 3.7 ⛬ᗘ࡛࠶
pp.2811- 2823.
ࡾ㸪BIC ᮏ᮶ࡢ್㸦7.0 ⛬ᗘ㸧࡟ẚ࡭࡚ᑠࡉࡃ㸪Ỉศࡀ᥹
(15) A.Ouedraogo, J.C.Mulligan, J.G.Cleland, “Comb. Flame” 114
Ⓨศ࡟ඛ⾜ࡋ࡚ᨺฟࡉࢀ࡚࠸ࡿࡇ࡜ࡀ❚࠼ࡿ㸬ࡇࡢせᅉ
(1998), pp.1-12.
࡜ࡋ࡚㸪BIC ࡢ⇕ᣑᩓ⋡ࡀ༑ศ኱ࡁࡃヨᩱຍ⇕㠃ഃࡀ᥹
(16) ᑠᙇ, ௚, “᪥ᮏⅆ⅏Ꮫ఍◊✲Ⓨ⾲఍ᴫせ㞟” (2010), p.386.
Ⓨศᨺฟ ᗘ࡟㐩ࡍࡿࡼࡾࡶヨᩱෆ㒊ࡀỈศ⵨Ⓨ ᗘ࡟
(17) ᪥ᮏᶵᲔᏛ఍㸪”ఏ⇕ᕤᏛヨᩱ ᨵゞ➨ 4 ∧”㸪p.322.
㐩ࡋ᫆࠸ࡇ࡜ࡀᣲࡆࡽࢀࡿ㸬Ỉศࡀඛ⾜ࡋ࡚ᨺฟࡉࢀ᫆
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