RITE の低エネルギー吸収液の進展

RITE ߩ ૐ ࠛ ࡀ ࡞ ࠡ ࡯ ๆ ෼ ᶧ ߩ ㅴ ዷ
4+6' ൻ ቇ ⎇ ⓥ ࠣ ࡞ ࡯ ࡊ
ᓟ⮮ ๺਽
㧝㧚⎇ⓥ⋡⊛
⊒㔚ᚲߩΆ὾ឃࠟࠬ߿⵾㋕ᚲߩ㜞Ἱࠟࠬ╬߆ࠄ㧯㧻㧞ࠍಽ㔌࿁෼ߔࠆᄢⷙᮨࡊ
ࡠ ࠮ ࠬ ߦ ኻ ߒ ߡ ‫ޔ‬ൻ ቇ ๆ ෼ ᴺ ߪ ᦨ ߽ ㆡ ಾ ߥ ᣇ ᴺ ߢ ޽ ࠆ ‫ޕ‬ൻ ቇ ๆ ෼ ᴺ ߪ ‫ޔ‬Ⴎ ၮ ᕈ ߩ ๆ
෼ ᶧ ߇ 㧯㧻㧞 ࠍ ㆬ ᛯ ⊛ ߦ ๆ ෼ ߒ ‫ޔ‬᷷ ᐲ ᠲ ૞ ߦ ࠃ ࠅ ኈ ᤃ ߦ ᡼ ᢔ ࠍ ➅ ࠅ ㄰ ߔ ․ ᓽ ߇ ޽ ࠅ ‫ޔ‬
ᓥ ᧪ ߆ ࠄ ࠕ ࡦ ࡕ ࠾ ࠕ ߿ ዩ ⚛ ⵾ ㅧ ࡊ ࡜ ࡦ ࠻ ╬ ߩ 㧯㧻㧞 ಽ 㔌 ࿁ ෼ ߦ ೑ ↪ ߐ ࠇ ߡ ޿ ࠆ ‫ߒޕ‬
߆ ߒ ‫ޔ‬ൻ ቇ ๆ ෼ ᴺ ߪ 㧯㧻㧞 ߩ ᡼ ᢔ ෸ ߮ ๆ ෼ ᶧ ߩ ౣ ↢ ߦ ᄢ ߈ ߥ ᾲ ㊂㧔 ಽ 㔌 ࿁ ෼ ࠛ ࡀ ࡞
ࠡ ࡯ 㧕ࠍ ᔅ ⷐ ߣ ߒ ‫ ߽ ࠻ ࠬ ࠦ ࡯ ࠡ ࡞ ࡀ ࠛޔ‬ᄢ ߈ ޿ ‫ޕ‬ᓥ ߞ ߡ ‫ޔ‬㧯㧯㧿㧔 ੑ ㉄ ൻ ὇ ⚛ ಽ 㔌
࿁ ෼࡮⾂ ⇐ ᛛ ⴚ 㧕߳ ㆡ ↪ ߒ ‫ޔ‬ታ ↪ ൻ ࠍ ട ㅦ ߔ ࠆ ߚ ߼ ߦ ߪ ‫ޔ‬ಽ 㔌 ࿁ ෼ ࠛ ࡀ ࡞ ࠡ ࡯ ߩ ૐ
ᷫߔࠆᛛⴚ㐿⊒߇⺖㗴ߢ޽ࠆ‫ޕ‬
㧾㧵㨀㧱 ߪ ‫ޔ‬㜞 Ἱ ࠟ ࠬ ࠍ ኻ ⽎ ߦ ൻ ቇ ๆ ෼ ᴺ ߦ ࠃ ࠅ 㧯㧻㧞 ࠍ ಽ 㔌 ࿁ ෼ ߔ ࠆ ᛛ ⴚ 㐿 ⊒
㧔 ⚻ ↥ ⋭ ⵬ ഥ ੐ ᬺ㧦
‫ ޟ‬ૐ ຠ ૏ ᑄ ᾲ ࠍ ೑ ↪ ߒ ߚ ੑ ㉄ ൻ ὇ ⚛ ಽ 㔌 ࿁ ෼ ᛛ ⴚ 㐿 ⊒ ‫ޠ‬㧘㧯㧻㧯
㧿 ࡊ ࡠ ࠫ ࠚ ࠢ ࠻ 㧘㧞㧜㧜㧠㨪㧞㧜㧜㧤㧕㧝㧕 ࠍ ታ ᣉ ߒ ‫ޔ‬㧯㧻㧞 ಽ 㔌 ࿁ ෼ ࠦ ࠬ ࠻ ඨ ᷫ ࠍ
⋡ ᜰ ߒ ‫ޔ‬ಽ 㔌 ࿁ ෼ ࠛ ࡀ ࡞ ࠡ ࡯ 㧞㧚㧡㧳㧶㧛㨠 - C O 2 ࠍ ㆐ ᚑ ߔ ࠆ ᣂ ๆ ෼ ᶧ ߩ 㐿 ⊒ ࠍ ផ ㅴ
ߒߚ‫ޕ‬
㧞㧚ൻቇๆ෼ᶧߩ㐿⊒᭎ⷐ
ᣂ ๆ ෼ ᶧ ࠍ 㐿 ⊒ ߔ ࠆ ߚ ߼ ‫ ⹜ ࡏ ࡜ޔ‬㛎 ߦ ߅ ޿ ߡ ෻ ᔕ ᾲ ߇ ૐ ߊ ‫ޔ‬਌ ߟ ๆ ෼ ᕈ ⢻ ߩ 㜞 ޿
ࠕ ࡒ ࡦ ൻ ቇ ⒳ ࠍ ታ 㛎 ߅ ࠃ ߮ ᢙ ୯ ⸃ ᨆ ߩ ਔ 㕙 ߆ ࠄ ᬌ ⸛ ߒ ߚ ‫ ⹜ ࡏ ࡜ޔ ߦ ᦝޕ‬㛎 ߢ ㆬ ቯ ߐ
ࠇ ߚ ᣂ ๆ ෼ ᶧ ߪ ‫ ޔ‬ᣂ ᣣ ᧄ ⵾ 㐅 ำ ᵤ ⵾ ㋕ ᚲ ౝ ߦ ⸳ ⟎ ߐ ࠇ ߚ 1㨠 - C O 2 㧛 d ࿁ ෼ ⢻ ജ ߩ ㅪ
⛯⹜㛎ⵝ⟎ߦࠃࠅ✚ว⊛ߦ⹏ଔߒߚ‫ޕ‬
Steel plant etc.
Chemical absorption
CO2 conc.
2䋦
CO2 conc.
99䋦
䋨Absorber䋩
䋨Stripper䋩
Discharge
Gas
CO2 conc.
22䋦
䋨Reboiler䋩
(Development)
(Target)
Reduce CO2 capture
cost by half
1. New Absorbent
2. Waste heat
Regeneration energy: 2.5 GJ/t-CO2
(Evaluation)
1 t-CO2/d plant
࿑㧝㧯㧻㧯㧿ࡊࡠࠫࠚࠢ࠻ߩ⎇ⓥ᭎ⷐ
−27−
࿑ 㧞 ߦ ಽ 㔌 ࿁ ෼ ࠛ ࡀ ࡞ ࠡ ࡯ ૐ ᷫ ߩ ⠨ ߃ ᣇ ߣ ᣂ ๆ ෼ ᶧ ߩ 㐿 ⊒ ⋡ ᮡ ࠍ ␜ ߔ 㧞㧕㧘㧟㧕‫ޕ‬ൻ
ቇ ๆ ෼ ᴺ ߦ ߅ ޿ ߡ ᄖ ㇱ ࠃ ࠅ ଏ ⛎ ߐ ࠇ ࠆ ಽ 㔌 ࿁ ෼ ࠛ ࡀ ࡞ ࠡ ࡯ ߪ ‫ޔ‬෻ ᔕ ᾲ ‫ޔ‬ๆ ෼ ᶧ ᣹ ᷷
߅ ࠃ ߮ ᡼ ᢔ ⫳ ᳇ ߣ ߒ ߡ ᶖ ⾌ ߐ ࠇ ࠆ 㧔㧭㧕‫ ޕ‬ᓥ ߞ ߡ ‫ ߩ ࠄ ࠇ ߎ ޔ‬ᶖ ⾌ ᾲ ࠍ ዊ ߐ ߊ ߔ ࠆ ․
ᓽ ࠍ ᜬ ߟ ๆ ෼ ᶧ ߩ 㐿 ⊒ ߇ ᔅ ⷐ ߢ ޽ ࠅ ‫ޔ‬ᓥ ᧪ ߩ ࠕ ࡒ ࡦ ൻ ቇ ⒳ ߦ ኻ ߒ ߡ ‫ޔ‬෻ ᔕ ᾲ ߇ ૐ ߊ ‫ޔ‬
4.0
3.0
2.0
1.0
Vapor from
stripper top
2.5
Sensible heat
of solvent
Absorption rate
Regeneration energy [GJ/t-CO2]
ๆ ෼ ᕈ ⢻ ߇ 㜞 ޿ ․ ᓽ ࠍ ᜬ ߜ ว ࠊ ߖ ࠆ ᣂ ๆ ෼ ᶧ ߩ 㐿 ⊒ ߦ ข ࠅ ⚵ ࠎ ߛ 㧔 B㧕‫ޕ‬
Reaction heat
Target
Primary amine
Secondary
amine
Tertiary
amine
0.0
MEA30%(est.)
Heat of reaction
Target
(A)
(B)
࿑㧞 ᣂๆ෼ᶧߩ㐿⊒ᣇ㊎
㧟㧚ૐࠛࡀ࡞ࠡ࡯ๆ෼ᶧߩ㐿⊒
࿑ 㧟 ߦ ࡜ ࡏ ⹜ 㛎 ߢ ᓧ ࠄ ࠇ ߚ ෻ ᔕ ᾲ ߣ 㧯㧻㧞 ๆ ෼ ㅦ ᐲ ߩ ᷹ ቯ ⚿ ᨐ ࠍ ␜ ߔ ‫ߦ ⊛ ⥸ ৻ޕ‬
ࠕ ࡒ ࡦ ൻ ቇ ⒳ ߪ ‫ޔ‬ૐ ෻ ᔕ ᾲ ߩ ߽ ߩ ߶ ߤ 㧯㧻㧞 ๆ ෼ ㅦ ᐲ ߇ ዊ ߐ ޿ ․ ᓽ ࠍ ᦭ ߒ ߡ ޿ ࠆ ߇ ‫ޔ‬
㐿 ⊒ ߒ ߚ ᣂ ๆ ෼ ᶧ 㧔 RITE-5C ‫ ޔ‬RITE-6B㧕 ߪ ૐ ಽ 㔌 ࿁ ෼ ࠛ ࡀ ࡞ ࠡ ࡯ ߇ ᦼ ᓙ ߢ ߈ ࠆ
CO2 absorption rate [g-CO2/L/min]
ૐ෻ᔕᾲ㧛㜞ๆ෼ㅦᐲ஥ߦ޽ࠆ‫ޕ‬
6
RITE-5C
RITE-6B
5
4
3
: Primary
: Secondary
: Tertiary
: PZ
: RITE solvent
conventional
2
1
0
50
60
70
80
90
Reaction heat [kJ/mol-CO2]
࿑㧟 ᣂๆ෼ᶧߩ࡜ࡏ⹜㛎⚿ᨐ
−28−
100
Regeneration energy [GJ/t-CO2]
: Experiment (1t-CO2/d plant)
: Optimization (estimation)
4.0
3.3
2.65
3.1
2.5
MEA
30%
RITE5C
RITE6B
࿑ 4 ᣂ ๆ ෼ ᶧ ߩ ᕈ ⢻
࿑ 㧠 ߦ 㧝㨠 - C O 2 /㨐 ࡊ ࡜ ࡦ ࠻ ߩ ⹜ 㛎 ⚿ ᨐ ࠍ ␜ ߔ ‫ ࡦ ࡒ ࠕ ࡞ ࡯ ࡁ ࠲ ࠛ ࡁ ࡕ ޕ‬㧔 MEA㧕
ߩ 㧟㧜㧑 ᳓ ṁ ᶧ ߦ ኻ ߒ ߡ ‫ ޔ‬ᣂ ๆ ෼ ᶧ ߪ 㧟㧚㧟 GJ㧛㨠 - C O 2 㧔 RITE-5C㧕‫ ޔ‬㧟㧚㧝 GJ/
㨠 - C O 2 㧔 RITE-6B㧕 ߣ ૐ ޿ ಽ 㔌 ࿁ ෼ ࠛ ࡀ ࡞ ࠡ ࡯ ࠍ ␜ ߒ ߚ ‫ ⸳ ޔ ߚ ߹ ޕ‬஻ ߅ ࠃ ߮ ᾲ ല ₸
ߩ ᦨ ㆡ ൻ ࠍ ታ ᣉ ߒ ߚ ႐ ว ‫ ߩ ࠇ ߙ ࠇ ߘޔ‬ๆ ෼ ᶧ ߪ ‫ޔ‬㧞㧚㧢㧡 ߅ ࠃ ߮ 㧞㧚㧡 GJ㧛㨠 - C O 2
ߩ㆐ᚑߩน⢻ᕈ߇޽ࠆߣផ▚ߐࠇߚ‫ޕ‬
㧠㧚੹ᓟߩㅴ߼ᣇ
㧾㧵㨀㧱 ߪ ‫ ޔ‬ᣂ ߚ ߦ 㧺㧱㧰㧻 ੐ ᬺ ‫ ޟ‬Ⅳ Ⴚ ⺞ ๺ ဳ ⵾ ㋕ ࡊ ࡠ ࠮ ࠬ ᛛ ⴚ 㐿 ⊒ ‫ޠ‬㧔㧞㧜㧜
㧤㨪㧝㧞㧕ߦ ෳ ട ߒ ‫ޔ‬㧯㧻㧯㧿 ࡊ ࡠ ࠫ ࠚ ࠢ ࠻ ߦ ᒁ ⛯ ޿ ߡ ᣂ ๆ ෼ ᶧ 㐿 ⊒ ࠍ ㅴ ߼ ߡ ޿ ࠆ ‫ޕ‬
ߎߩࡊࡠࠫࠚࠢ࠻ߢߪ‫ޔ‬㜞Ἱࠟࠬࠍኻ⽎ߦ㧯㧻㧞ಽ㔌࿁෼ࠦࠬ࠻㧞㧜㧜㧜౞㧛㨠
-CO2
ࠍ ㆐ ᚑ ߔ ߴ ߊ ‫ޔ‬ಽ 㔌 ࿁ ෼ ࠛ ࡀ ࡞ ࠡ ࡯ 㧞㧚㧜 GJ㧛㨠 - C O 2 ߩ ᦝ ߥ ࠆ 㜞 ᕈ ⢻ ๆ ෼ ᶧ ߩ
㐿 ⊒ ߦ ข ⚵ ࠎ ߢ ޿ ࠆ ‫ ޔ ߚ ߹ ޕ‬㧟㧜㨠 -CO2㧛㨐 ⷙ ᮨ ߩ ࡄ ࠗ ࡠ ࠶ ࠻ ࡊ ࡜ ࡦ ࠻ ߦ ࠃ ࠆ ታ ⸽
⹜㛎ߩታᣉࠍ⸘↹ߒߡ޿ࠆ‫ޕ‬
㧡㧚ෳ⠨ᢥ₂
1) RITE, H19 ᐕ ᐲ ႎ ๔ ᦠ ‫ ޟ‬ૐ ຠ ૏ ᑄ ᾲ ࠍ ೑ ↪ ߒ ߚ ੑ ㉄ ൻ ὇ ⚛ ಽ 㔌 ࿁ ෼ ᛛ ⴚ ႎ ๔ ᦠ ‫ޠ‬
(2008)
2) Chowdhury,
F.
A.,
H.
Okabe,
S.
Shimizu,
M.
Onoda
and
Y.
Fujioka,
“Development of novel tertiary amine absorbents for CO2 capture”, Energy
Procedia, Vol.1(1), pp.1241-1248 (2009), Proc. of GHGT-9, 16-20 Nov., 2008,
Washington DC, USA
3) Goto, K., H. Okabe, S. Shimizu, M. Onoda and Y. Fujioka, “Evaluation method
of novel absorbents for CO2 capture”, Energy Procedia, Vol.1(1), pp.1083-1089
(2009), Proc. of GHGT-9, 16-20 Nov., 2008, Washington DC, USA
−29−

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