J. Inst. Electrostat. Jpn.
, 30, 5 (2006) 223 229⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߩㆇォታ❣ߣ㓸Ⴒᕈ⢻⹏ଔਃ ဈ ବ ᣿㧖,1㧘ᄢ ᶆᔘ㧖㧘ጊ ፒ⒤㧖

㧔2006 ᐕ 4 ᦬ 28 ᣣฃઃ; 2006 ᐕ 9 ᦬ 22 ᣣฃℂ㧕Operation of the Moving Electrode Type Electrostatic Precipitator andEvaluation of a Performance Equation
Toshiaki MISAKA*,1, Tadashi OURA* and Minoru YAMAZAKI*(Received April 28, 2006; Accepted September 22,2006)

An exhaust gas, containing a high resistivity catalyst dust from an off-gas boiler of the fluid catalytic cracker, wasstudied using a pilot-scale moving electrode type electrostatic precipitator (MEEP). The MEEP was able to achieve thesame collection efficiency with the specific collection area of less than 1/3 of the conventional fixed-electrode typeelectrostatic precipitator (FEESP). The experiment results indicated that the MEEP could be used as the retrofit unit
downstream of the conventional FEESP. The performance equation having the combination of the FEESP and MEEP
were developed using the field data of the MEEP for a coal fired boiler application.
1.

ᛶ᛫࠳ࠬ࠻ߩ㓸Ⴒ߇น⢻ߢ޽ࠅ㧘࿁ォࡉ࡜ࠪߪ㓸Ⴒ᧼ߦ㕒㔚ߪߓ߼ߦ㔚᳇㓸Ⴒⵝ⟎ߪ㧘ࠟࠬਛߦᶋㆆߔࠆᓸ⚦ߥ࠳ࠬ࠻ߦኻߒߡ᝝㓸ߒߚ࠳ࠬ࠻ߩᛄ⪭ߒലᨐ߇ఝࠇߡ޿ࠆߎߣࠍ␜ߒߚ㧚ਥ⋥ធ⊛ߦ㕒㔚᳇ജࠍ෸߷ߒߡ㔚᳇⊛ߦ᝝㓸㒰෰ߔࠆߩߢ㧘㓸ⷐⒿേㇱຠߩା㗬ᕈะ਄ߦߟ޿ߡߪ㧘㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߩᒻႲᕈ⢻߇࠳ࠬ࠻㔚᳇ᛶ᛫₸ߩᓇ㗀ࠍฃߌࠆ㧚․ߦ㜞ᛶ᛫࠳ࠬ⁁ߣ࠳ࠬ࠻ᛄ⪭ߒ↪࿁ォࡉ࡜ࠪߩ⏴⠻㊂ߩ㑐ଥ㧘㓸Ⴒᭂࠛ࡟࠻ߢ⊒↢ߔࠆㅒࠦࡠ࠽ߦࠃࠆ㓸Ⴒᕈ⢻ߩૐਅࠍస᦯ߔࠆߎࡔࡦ࠻ߩ㚟േ↪࠴ࠚ࡯ࡦߦ᡼㔚㔚ᵹ߇ᵹࠇࠆߎߣߦࠃࠆ㔚1㧕

ߣߪ㊀ⷐߥ⺖㗴ߣߥߞߡ޿ࠆ 㧚㔚᳇㓸Ⴒⵝ⟎ߢㅒࠦࡠ࠽ࠍ᳇⊛៊⠻ߦߟ޿ߡㅀߴߚ㧚ᛥ೙ߒߡ㓸Ⴒᕈ⢻ࠍ㜞ߊ଻ߟᣇᴺߣߒߡ㧘⒖േ㔚ᭂᣇᑼࠍ㐿ᧄ⺰ᢥߢߪߎࠇ߹ߢߩ⎇ⓥᚑᨐࠍᔕ↪ߒߚ(1)⒖േ㔚ᭂᣇ⊒ߒߚ㧚⒖േ㔚ᭂᣇᑼߢߪ㓸Ⴒ᧼ࠍ⍴ౠ⁁ߦಽഀߒߚ㓸Ⴒᭂᑼߩ⃻࿾ࡄࠗࡠ࠶࠻⹜㛎 (2)ታⵝ⟎߳ߩ⒖േ㔚ᭂᣇᑼߩㆡ↪

ࠛ࡟ࡔࡦ࠻ࠍ࠴ࠚ࡯ࡦߢㅪ⚿ߒߡ⒖േน⢻ߣߒ㧘㓸Ⴒᭂࠛ࡟(3)࿕ቯ㔚ᭂᣇᑼߣ⒖േ㔚ᭂᣇᑼࠍ⚵วߖߚ႐วߩ㓸Ⴒᕈ⢻ࡔࡦ࠻ߦ᝝㓸ߒߚ࠳ࠬ࠻ࠍ࿁ォࡉ࡜ࠪߢㅪ⛯⊛ߦቢో㒰෰

⹏ଔᣇᴺߩᬌ⸛ߦߟ޿ߡႎ๔ߔࠆ㧚ߒߡ㓸Ⴒ᧼ࠍᷡᵺߦ଻ߞߡ޿ࠆ㧚⒖േ㔚ᭂᣇᑼߦࠃࠆ㔚᳇㓸Ⴒⵝ⟎ߩ࠳ࠬ࠻ጀઃ⌕ജߣᛄ⪭ߒലᨐ߅ࠃ߮ਥⷐⒿേㇱຠߩା㗬ᕈะ਄ߦߟ޿ߡߪᣢߦႎ๔ߒߚ

2㧘3㧕

㧚೨ႎߢ㧘㔚᳇㓸Ⴒⵝ⟎ߩ࠳ࠬ࠻ጀߩઃ⌕ജߪ࠳ࠬ࠻㔚᳇ᛶ᛫₸߇㜞ߊߥࠆ

2.

⍹ᴤធ⸅ಽ⸃ࠟࠬΆ὾ࡏࠗ࡜ឃࠟࠬಣℂ♽⛔߳ߩ⒖േ㔚ᭂᣇᑼߩㆡ↪

2.1 ࡄࠗࡠ࠶࠻ታ㛎ⵝ⟎߅ࠃ߮ታ㛎ᣇᴺߣᕆỗߦჇടߒߡ㧘㓸Ⴒ᧼ߩᯏ᪾⊛᭵ᛂߢߪᛄ⪭ߒ࿎㔍ߦߥ⍹ᴤធ⸅ಽ⸃ⵝ⟎ߪ㜞ᴣὐߩ⍹ᴤࠍ㧘⸅ᇦߩሽ࿷ਅߢ㜞᷷ࠆߎߣࠍ᣿ࠄ߆ߦߒߚ㧚߹ߚ㧘㜞ᛶ᛫࠳ࠬ࠻ࠍࡉ࡜ࠪߢᛄ⪭ಽ⸃ߒߡ㜞ࠝࠢ࠲ࡦଔࠟ࠰࡝ࡦ╬ࠍ⵾ㅧߔࠆ⸳஻ߢ޽ࠆ 㧕㧚ߒߡ㓸Ⴒ᧼⴫㕙ࠍᏱߦᷡᵺߦ଻ߡ߫㧘ㅒࠦࡠ࠽ࠍ㒐ᱛߒߡ㜞

࿑ 1 ߦታ㛎ࠍⴕߞߚ⍹ᴤធ⸅ಽ⸃ⵝ⟎߅ࠃ߮⍹ᴤಽ⸃ࠟࠬΆ
὾ࡏࠗ࡜ߩឃࠟࠬಣℂ♽⛔ࠍ␜ߔ㧚࿑ਛߦߪታ㛎ߦ૶↪ߒߚࠠ࡯ࡢ࡯࠼㧦㔚᳇㓸Ⴒⵝ⟎㧘㜞ᛶ᛫࠳ࠬ࠻㧘ㅒࠦࡠ࠽㧘⒖േ㔚ᭂᣇᑼ㧘⍹ᴤᵹേធ⸅ಽ⸃ⵝ⟎㧘㓸Ⴒᕈ⢻ᑼ* 㧔ᩣ㧕ᣣ┙ࡊ࡜ࡦ࠻࠹ࠢࡁࡠࠫ࡯㧔170-8466 ᧲੩ㇺ⼾ፉ඙ർᄢႦ 1-13-2㧕
Hitachi Plant Technologies, Ltd. 1-13-2 Kita-Otsuka,
Toshima-ku, Tokyo, 170-8466 Japan1toshiaki.misaka.sn@hitachi-pt.com

ࡄࠗࡠ࠶࠻㓸Ⴒⵝ⟎ߩ⸳⟎႐ᚲ߅ࠃ߮Ⴧ⸳ߒߚ⒖േ㔚ᭂᣇᑼ㔚᳇㓸Ⴒⵝ⟎ߩ㈩⟎ࠍ␜ߒߚ㧚⍹ᴤធ⸅ಽ⸃ⵝ⟎ߦߪ㧘ࠪ࡝ࠞ࡮ࠕ࡞ࡒ࠽ࠍਥᚑಽߣߒߚ
⃿⁁ߩ⸅ᇦ߇૶ࠊࠇߡ޿ࠆ㧚⍹ᴤធ⸅ಽ⸃ⵝ⟎ߩឃࠟࠬߪ৻
㉄ൻ὇⚛ࠍਥᚑಽߣߒߚนΆᕈߩࠟࠬߢ㧘⍹ᴤಽ⸃ࠟࠬΆ὾

224 (32)30

Conventional
fixed electrode typeelectrostatic precipitator
Ci=0.35g/m3N

ReactorGasoline

SteamLight gas oil
Heavy gas oil

Off gasSteam

Slurry oil

Cyclonecatalystseparator

52006

Retrofit
moving electrode typeelectrostatic precipitator
Co=0.035g/m3N

Tg=180͠ Q=61,000m3N/J

Off gasfiringboiler

Duplicator
Combustible air
Stock oil

Fluid catalytic cracker

FanStack
Pilot electrostatic precipitator5Ǵ㨙࿑ 1 ⍹ᴤᵹേធ⸅ಽ⸃ⵝ⟎ಽ⸃ࠟࠬΆ὾ࡏࠗ࡜ឃࠟࠬಣℂ♽⛔
Fig.1 Schematic diagram for the exhaust gas treatment system of the off-gas firing boiler
from the fluid catalytic cracker.

࿑ 3 ⸅ᇦ࠳ࠬ࠻ߩᒻ⁁Fig.3 Photograph ofthe catalyst dust.

ࡏࠗ࡜ߢᾲ࿁෼ߒߡ޿ࠆ㧚⍹ᴤಽ⸃ࠟࠬΆ὾ࡏࠗ࡜ߩឃࠟࠬǴm ߢ޽ߞߚ㧚߹ߚ࠳ࠬ࠻㔚᳇ᛶ᛫₸ߪ㔚᳇㓸Ⴒⵝ⟎ߩࡎ࠶ߦߪ⸅ᇦߩ៺⠻߿⎕⎈ߢ⊒↢ߒߚᓸ☳ᧃ߇⸅ᇦ࠳ࠬ࠻ߣߒࡄ࡯࠳ࠬ࠻ࠍታ㛎ቶߦᜬߜᏫࠅ㧘ᕡ᷷ጀౝߢᐔⴕᐔ᧼ᴺ  ߢߡ฽߹ࠇߡߚ߼ߦ㧘㔚᳇㓸Ⴒⵝ⟎ߢ㒰Ⴒߒߡ߆ࠄឃ಴ߒߡ޿᷹ቯߒߚ㧚᷹ቯ⚿ᨐࠍ࿑ 4 ߦ␜ߔ㧚࿑ਛߩ㎮✢ߪᕡ᷷ᮏౝߩࠆ㧚ᣢ⸳㔚᳇㓸Ⴒⵝ⟎ߪ 1 ቶ 2 ඙ߩ࿕ቯ㔚ᭂᣇᑼߢ޽ࠆ㧚⸅

᷷ᐲࠍ 150㨪250͠ߦᄌൻߒߚߣ߈ߩ࠳ࠬ࠻㔚᳇ᛶ᛫₸ࠍ␜ᇦ࠳ࠬ࠻ߪ㔚᳇ᛶ᛫₸߇㜞ߊ㧘㔚᳇㓸Ⴒ߇࿎㔍ߥ࠳ࠬ࠻ߢ޽ߒߡ޿ࠆ㧚࿑ਛߦ㤥ਣශߢ␜ߒߡ޿ࠆ᷹ቯ୯ߪᣢ⸳㔚᳇㓸Ⴒࠆ 㧚ⅣႺኻ╷ߩߚ߼ߦឃᾍߩ࠳ࠬ࠻Ớᐲࠍᦝߦૐਅߐߖࠆⵝ⟎ߩὐᬌᤨߦࡎ࠶ࡄ࡯ߢណขߒߚ࠳ࠬ࠻ߩ 4 ᐕ㑆ߦߟ޿ߡⷐ᳞߇޽ࠅ㧘㔚᳇㓸Ⴒⵝ⟎ߩჇ⸳߇ᔅⷐߣߥߞߚ㧚ߘߎߢ㜞ߩ᷹ቯ⚿ᨐߢ޽ࠆ㧚᷷ᐲ 200͠ߦ߅ߌࠆ࠳ࠬ࠻㔚᳇ᛶ᛫₸ߪᛶ᛫࠳ࠬ࠻ߩ㔚᳇㓸Ⴒ↪ߦ㐿⊒ߒߚ⒖േ㔚ᭂᣇᑼߩࡄࠗࡠ

1014ǡ㨯cm ࠍਛᔃߦ 1 ᩴ⒟ᐲߩᄌേ᏷ࠍ␜ߒߡ޿ࠆ㧚࠳ࠬ࠻࠶࠻㓸Ⴒⵝ⟎ࠍ↪޿ߡ⍹ᴤಽ⸃ࠟࠬΆ὾ࡏࠗ࡜ឃࠟࠬࠍኻ

ᛶ᛫₸߇᷹ቯᤨᦼߦࠃߞߡᄌേߒߡ޿ࠆߩߪ㧘⍹ᴤಽ⸃ࠟࠬ

⽎ߦ㓸Ⴒታ㛎ࠍⴕ޿㧘⒖േ㔚ᭂᣇᑼߦ߅ߌࠆ㓸Ⴒ₸ߣ㓸Ⴒ㕙Ά὾ࡏࠗ࡜ߩΆ὾᧦ઙ㧘⍹ᴤធ⸅ಽ⸃ⵝ⟎ߩขᛒ߁ේᢱᴤߩ

Ⓧߩ㑐ଥࠍ᳞߼ߚ㧚ࡄࠗࡠ࠶࠻㓸Ⴒⵝ⟎ߩ᭎ⷐࠍ࿑ 2 ߦ␜ߔ㧚ᕈ⁁㧘⸅ᇦᚑಽߩᓸᅱߥᄌൻߥߤߩᓇ㗀ࠍฃߌߡ޿ࠆ߽ߩߣ

߹ߚࡄࠗࡠ࠶࠻㓸Ⴒⵝ⟎ߩ᷹ቯ⚿ᨐࠍ↪޿ߡ⒖േ㔚ᭂᣇᑼᕁࠊࠇࠆ㧚ߩ㔚᳇㓸Ⴒⵝ⟎ࠍ⸳⸘ߒ㧘ᣢ⸳㔚᳇㓸Ⴒⵝ⟎ߩਅᵹߦჇ⸳ߒ
ߚ㧚㧚⍹ᴤಽ⸃ࠟࠬΆ὾ࡏࠗ࡜↪㔚᳇㓸Ⴒⵝ⟎ߩ᷷ࠟࠬᐲߪ 180
㨪200͠ߢ޽ࠅ㧘ߎߩ᷷ࠟࠬᐲߦ߅ߌࠆ࠳ࠬ࠻㔚᳇ᛶ᛫₸ߪ

2.2ᣢ⸳㔚᳇㓸Ⴒⵝ⟎ߩㆇォ⁁ᴫ

1013ǡ㨯cm ࠍ⿥߃ߡ޿ࠆ㧚ߎߩ࠳ࠬ࠻㔚᳇ᛶ᛫₸ߪỗߒ޿ㅒ࿕ቯ㔚ᭂᣇᑼߩᣢ⸳㔚᳇㓸Ⴒⵝ⟎ߩㆇォ⁁ᴫߦߟ޿ߡ᷹ࠦࡠ࠽߇⊒↢ߒߡ㔚᳇㓸Ⴒ߇࿎㔍ߥ㗔ၞߦ޽ࠆ㧚ቯࠍⴕߞߚ㧚࿑ 3 ߪᣢ⸳㔚᳇㓸Ⴒⵝ⟎ߢ᝝㓸ߒߚ⸅ᇦ࠳ࠬ࠻ᣢ⸳㔚᳇㓸Ⴒⵝ⟎ߩ᡼㔚․ᕈ᷹ቯ⚿ᨐࠍ࿑ 5 ߦ␜ߔ㧚ᝪઃࠍ⿛ᩏဳ㔚ሶ㗼ᓸ㏜ߢ᷹ⷰߒߚ☸ሶᒻ⁁ߩ౮⌀ߢ޽ࠆ㧚⸅ᇦቢੌᤨߩᏱ᷷ⓨ᳇⽶⩄ߦ߅ߌࠆ᡼㔚․ᕈߣ᷷ࠟࠬᐲ 185͠ߦ

࠳ࠬ࠻ߪ⸅ᇦߩ☳⎈⎕ ߢਇቯᒻࠍߒߡ߅ࠅ㧘ᐔဋ☸ᓘߪ 16߅ߌࠆㆇォ⁁ᘒߢߩ᡼㔚․ᕈߪᄢ߈ߊ⇣ߥߞߡ޿ࠆ㧚ㅢᏱߩ

Collecting plate element

1016

Discharge
electroderapperInsulator

1015

3,543

Discharge
wire

Guide
2,400

1,256

࿑ 2 ⒖േ㔚ᭂᣇᑼࡄࠗࡠ࠶࠻㔚᳇㓸Ⴒⵝ⟎
Fig. 2 Pilot-scale moving electrode typeelectrostatic precipitator.

Dust resistivity (ǡ㨯cm)

Chain

1014

1013

1012

Change of measured
value bymeasurement time
Tg=200͠
16% H2O

140

160

180

200

220

Temperature (͠)࿑  ⸅ᇦ࠳ࠬ࠻ߩ㔚᳇ᛶ᛫₸Fig.4 Resistivity of catalyst dust.

240

225 (33)

Ratio of specific collection area f/f0㧔-㧕

Gas temperature 185͠
Dust resistivity 51013ǡ㨯cm
2nd section 1st section-1.00

Collection efficiency㧔㧑㧕Current density㧔mA/m2㧕

-3.0

-0.5
-0.3

2nd section-0.1-0.05

1st section-0.03

Air load-0.01-15-20-30

-40

00.2

0.4

0.6

0.8

1.0

1.2

Conventional fixed electrode typeelectrostatic precipitator

5070
8090

Moving electrode type pilot
electrostatic precipitator

95-50 -60 -70

Apply voltage㧔kV㧕࿑ 5 ᣢ⸳㔚᳇㓸Ⴒⵝ⟎ߩ᡼㔚․ᕈ
Fig.5 V-I characteristic of the conventional electrostatic precipitator.

࿑ 6 ⒖േ㔚ᭂᣇᑼߩᲧ㓸Ⴒ㕙Ⓧ₸ߣ㓸Ⴒ₸
Fig.6 The ratio of specific collection area vs. collection efficiency
for the moving electrode type electrostatic precipitator.
Ყ㓸Ⴒ㕙Ⓧ f0 ߢ㒰ߒߚ୯ f/f0 ߦⷙᩰൻߒ㧘Ყ㓸Ⴒ㕙Ⓧ₸ߣߒ㔚᳇㓸Ⴒน⢻ߥ࠳ࠬ࠻㔚᳇ᛶ᛫₸ߩ▸࿐ߢߪ㧘᡼㔚․ᕈߪ⩄ߡ␜ߒߚ㧚Ყ㓸Ⴒ㕙Ⓧ₸߇ 1.0㧘ߔߥࠊߜቯᩰಣℂࠟࠬ㊂ߦ㔚㔚࿶ࠍ਄᣹ߒߥ߇ࠄ᷹ቯߒߚ㔚ᵹ୯ߣ㔚࿶ࠍਅ㒠ߒߥ߇߅ߌࠆ㓸Ⴒ₸ߪ 73㧑⒟ᐲߢ޽ࠆ㧚Ყ㓸Ⴒ㕙Ⓧ₸߇ 0.5 ⒟ᐲߩ

ࠄ᷹ቯߒߚ㔚ᵹ୯ߪ߶߷หߓ୯ࠍ␜ߔ㧚ߒ߆ߒ᷷ࠟࠬᐲ߇

ߣ߈ߩ㓸Ⴒ₸ߪ㔚᳇㓸Ⴒⵝ⟎ߩ╙  ඙ࠍ⩄㔚ߒ㧘╙ 2 ඙ࠍή

185͠ߩߣ߈ߪㅢᏱߩ⩄㔚⁁ᘒߣ⇣ߥࠅ㧘ᣢ⸳㔚᳇㓸Ⴒⵝ⟎⩄㔚ߣߒߚߣ߈ߩ᷹ቯ୯ߢ޽ࠆ㧚ߩ᡼㔚㔚ᵹࠍჇߒߡ޿ߊߣ⩄㔚㔚࿶ߪૐਅߒߚ㧚߹ߚ㧘᡼㔚

2.3⒖േ㔚ᭂᣇᑼࡄࠗࡠ࠶࠻㓸Ⴒⵝ⟎ߦࠃࠆ⃻࿾ታ㛎㔚ᵹࠍ⩄㔚ⵝ⟎ኈ㊂ߩᦨᄢ୯߆ࠄ㒠ਅߒߡ޿ߊߣ㔚࿶ߪ 㓸Ⴒ₸ߣ㓸Ⴒ㕙Ⓧᓢ‫ߦޘ‬ૐਅߒߡ޿߈㧘᡼㔚㔚ᵹࠍჇടߒߚߣ߈ߣ⇣ߥߞߚ୯ࡄࠗࡠ࠶࠻㓸Ⴒⵝ⟎ࠍ↪޿ߡ⍹ᴤಽ⸃ࠟࠬΆ὾ࡏࠗ࡜ߩࠍ␜ߒߚ㧚ߎߩࠃ߁ߦ᡼㔚․ᕈ߇㗼⪺ߥࡅࠬ࠹࡝ࠪࠬࠞ࡯ࡉᾍ⓭಴ญ࠳ࠬ࠻Ớᐲࠍૐᷫߔࠆߚ߼ߦჇ⸳ߔࠆ⒖േ㔚ᭂᣇࠍឬߊߩߪ㔚᳇㓸Ⴒⵝ⟎ౝߢㅒࠦࡠ࠽߇⊒↢ߒߡ޿ࠆ႐วᑼ㔚᳇㓸Ⴒⵝ⟎ߩ⸳⸘࠺࡯࠲ࠍᓧࠆߎߣߦߒߚ㧚ࡄࠗࡠ࠶࠻ߩౖဳ଀ߢ޽ࠅ 㧕㧘⸅ᇦ࠳ࠬ࠻ߩ㓸Ⴒߢߪỗߒ޿ㅒࠦࡠ࠽߇㓸Ⴒⵝ⟎ߢ᷹ቯߒߚಣℂࠟࠬ㊂ߣ㓸Ⴒ₸ߩ㑐ଥࠍ࿑ 6 ߦ૬⸥⊒↢ߒߡ޿ࠆߎߣ߇ࠊ߆ࠆ㧚᡼㔚㔚ᵹᷫዋᤨߩ⩄㔚㔚࿶ߪ╙ߔࠆ㧚ᮮゲߪࡄࠗࡠ࠶࠻㓸Ⴒⵝ⟎ߩᲧ㓸Ⴒ㕙Ⓧࠍᣢ⸳㔚᳇㓸

1 ඙ߦᲧߴߡ╙ 2 ඙ߩ⩄㔚㔚࿶߇ૐߊ㧘╙ 2 ඙ߢỗߒ޿ㅒࠦႲⵝ⟎ߩᲧ㓸Ⴒ㕙Ⓧߢ㒰ߒߚ୯ߢᢛℂߒߚ㧚⒖േ㔚ᭂᣇᑼߩࡠ࠽߇⊒↢ߒߡ޿ࠆߣᕁࠊࠇࠆ㧚㓸Ⴒᕈ⢻ࠍ⷗ࠆߣ㧘㧑ߩ㓸Ⴒ₸ࠍᓧࠆߚ߼ߦߪ࿕ቯ㔚ᭂᣇᣢ⸳㔚᳇㓸Ⴒⵝ⟎ߩ㓸Ⴒ₸᷹ቯ⚿ᨐߣ㓸Ⴒ㕙Ⓧߩ㑐ଥࠍᑼߩᲧ㓸Ⴒ㕙Ⓧ₸  ߦኻߒߡ⒖േ㔚ᭂᣇᑼߢߪ  ߦߥ࿑ 6 ߦ␜ߔ㧚㓸Ⴒ₸ Ș  ߪ㔚᳇㓸Ⴒⵝ⟎ߩ౉ญ࠳ࠬ࠻Ớᐲߞߡ޿ࠆ㧚ߎࠇߪห৻ߩ㓸Ⴒ₸ࠍᓧࠆߩߦ㧘⒖േ㔚ᭂᣇᑼߩ%K IO0 ߣ಴ญ࠳ࠬ࠻Ớᐲ %Q IO0 ߩ᷹ቯ୯ࠍ↪޿ߡᑼ(1)㔚᳇㓸Ⴒⵝ⟎ߩ㓸Ⴒ㕙Ⓧ߇࿕ቯ㔚ᭂᣇᑼߩ 1/3 ⒟ᐲߩ㓸Ⴒ㕙ߢ▚಴ߒߚ㧚

Ⓧߢࠃ޿ߎߣࠍ␜ߒߡ޿ࠆ㧚⸅ᇦ࠳ࠬ࠻ߩࠃ߁ߦ㜞ᛶ᛫࠳ࠬ

Ș=(1-Co/Ci)(1)㔚᳇㓸Ⴒⵝ⟎ߩ㓸Ⴒ₸ߣᲧ㓸Ⴒ㕙Ⓧߥߤߩ㑐ଥߪᑼ  ߩDeutsch ߩᑼ 㧕ߢ᳞߼ࠄࠇࠆ㧚
Ș=exp(-Ȧ×A/Q)

࠻ߢᒝ޿ㅒࠦࡠ࠽߇⊒↢ߔࠆ႐วߦ⒖േ㔚ᭂᣇᑼ߇᦭ലߥߎߣ߇ታ㛎ߢ␜ߐࠇߚ㧚 㓸Ⴒᭂߩ࠳ࠬ࠻ᛄ⪭ߒ㑆㓒

(2)⒖േ㔚ᭂᣇᑼߩ႐ว㧘㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߪ㓸Ⴒၞࠍ⒖േߒߎߎߢ㧘࠳ࠬ࠻⒖േㅦᐲ Ȧ(m/s)ߪࠟࠬᕈ⁁㧘☸ሶߩᒻ⁁㧘ߡ޿ࠆ㑆ߦ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻⴫㕙ߦ࠳ࠬ࠻ࠍ᝝㓸ߔࠆߚ߼㧘☸ᓘಽᏓߥߤࠍ฽߻ోߡߩࡊࡠ࠮ࠬⷐ࿃ࠍઍ⴫ߔࠆ⸳⸘ࡄ࠳ࠬ࠻ጀߩෘߐ߇Ⴧߒߡ޿ߊ㧚㓸Ⴒᭂࠛ࡟ࡔࡦ࠻⴫㕙ߩ᝝㓸࡜ࡔ࡯࠲ߢ޽ࠆ㧚A(m2)ߪ㔚᳇㓸Ⴒⵝ⟎ߩ㓸Ⴒᭂߩో⴫㕙Ⓧ㧘

࠳ࠬ࠻ጀෘߐߪ࠳ࠬ࠻Ớᐲ㧘㓸Ⴒ₸㧘㓸Ⴒၞࠍ㓸Ⴒᭂࠛ࡟ࡔ

Q(m3/s)ߪಣℂࠟࠬ㊂ߢ޽ࠆ㧚A/Q ߪᲧ㓸Ⴒ㕙Ⓧf(s/m)ߢ޽ࠅ㧘ࡦ࠻߇ㅢㆊߔࠆᤨ㑆ߥߤ߇㑐ଥߔࠆ㧚⒖േ㔚ᭂᣇᑼߩ࠳ࠬ࠻

න૏ಣℂࠟࠬ㊂޽ߚࠅߩ㓸Ⴒ㕙Ⓧ㧘ߔߥࠊߜ㔚᳇㓸Ⴒⵝ⟎ߩᛄ⪭ߒߪ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻⴫㕙ߦ᝝㓸ߒߚ࠳ࠬ࠻ጀࠍࡎ࠶ᄢ߈ߐࠍ⴫ߒߡ޿ࠆ㧚ࡄ࡯ߦขઃߌߚ࿁ォࡉ࡜ࠪߢហ߈⪭ߔ᭴ㅧߦߥߞߡ޿ࠆ 㧕㧚⍹ᴤಽ⸃ࠟࠬΆ὾ࡏࠗ࡜↪㔚᳇㓸Ⴒⵝ⟎ߩಣℂࠟࠬ㊂ߪ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻⴫㕙ߩ࠳ࠬ࠻ጀࠍᛄ⪭ߔᤨ㑆㑆㓒ࠍ᳞߼⍹ᴤធ⸅ಽ⸃ⵝ⟎ߩㆇォ᧦ઙߦࠃߞߡ⇣ߥࠆ ߎߩߚ߼㧘ᮮࠆߎߣߪ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߩ⒖േㅦᐲࠍ⸳⸘ߔࠆߩߦᔅⷐゲߪ㓸Ⴒ₸᷹ቯᤨߩᲧ㓸Ⴒ㕙Ⓧ f ࠍቯᩰಣℂࠟࠬ㊂ߩߣ߈ߩߣߥࠆ㧚ߘߎߢ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻⴫㕙ߩ᝝㓸࠳ࠬ࠻ࠍᛄ⪭ߔ

30Tg㧦177͠
Q㧦1,640m3N/hCi㧦756g/m3N

80
70
60
5040

Moving electrode operation
StoppedRunning-30-25-20

0510Time㧔h㧕

1520

5025

Collection efficiency㧔㧑㧕

Apply voltage(kV)Collection
efficiency 㧑226 (34)

࿑ 7 ⒖േ㔚ᭂߩㆇォ⁁ᘒߣ㓸Ⴒ₸ᄌൻ
Fig.7 Change of the collection efficiency for themoving electrode operation.
ᤨ㑆㑆㓒ࠍᬌ⸛ߔࠆߚ߼ߦ㧘㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߩ⒖േߣ࠳ࠬ࠻ߩᛄ⪭ߒࠍ஗ᱛߒߚ߹߹ߩ⁁ᘒߦߒߡ㧘㓸Ⴒ₸ࠍ⚂  ᤨ㑆Ფߦ᷹ቯߒߚ㧚᷹ቯ⚿ᨐࠍ࿑ 7 ߦ␜ߔ㧚02006

Ratio of specific collection area f/f0㧔-㧕
0.2

0.4

0.6

0.8

1.01.21.4

Conventional
fixed electrodetype electrostatic
precipitator

50
70
Moving electrode typepilot electrostatic
precipitator

80
90

Retrofit moving electrode typeelectrostatic precipitator95࿑  ⒖േ㔚ᭂᣇᑼߩᲧ㓸Ⴒ㕙Ⓧ₸ߣ㓸Ⴒ₸
Fig.8 The ratio of specific collection area vs. collection efficiency of
the retrofit moving electrode type electrostatic precipitator.
ଥߩᑧ㐳✢਄ߦ޽ࠅ㧘⦟޿৻⥌ࠍ␜ߒߡ޿ࠆ㧚࿑ਛߩᲧ㓸Ⴒ㕙Ⓧ₸ f/f0 ߇  ߢ㓸Ⴒ₸߇ 㧑⒟ᐲߩ᷹ቯ
୯ߪ㧘࿕ቯ㔚ᭂᣇᑼߩᣢ⸳㔚᳇㓸Ⴒⵝ⟎ߣᣂ⸳ߩ⒖േ㔚ᭂᣇ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߩ⒖േߣ࿁ォࡉ࡜ࠪߦࠃࠆ࠳ࠬ࠻ߩᛄᑼ㔚᳇㓸Ⴒⵝ⟎ࠍ⚵วߖߚߣ߈ߩ㓸Ⴒ₸ߢ޽ࠆ㧚㓸Ⴒ₸ߪᣢ⪭ߒࠍ஗ᱛߔࠆߣ㧘㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߦ࠳ࠬ࠻߇᝝㓸ߐࠇࠆ⸳㔚᳇㓸Ⴒⵝ⟎ߩ౉ญᾍ㆏ߣ⒖േ㔚ᭂᣇᑼߩᣂ⸳㔚᳇㓸Ⴒߦᓥߞߡ㓸Ⴒ₸ߪᓢ‫ߦޘ‬ૐਅߒߡ޿ߊ㧚ߎߩߣ߈⩄㔚㔚࿶߽ⵝ⟎ߩ಴ญᾍ㆏ߢ᷹ቯߒߚ࠳ࠬ࠻Ớᐲ߆ࠄ▚಴ߒߚ㧚Ყ㓸Ⴒห᭽ߦૐਅߔࠆ㧚15 ᤨ㑆⚻ㆊߔࠆߣ㧘㓸Ⴒ₸ߪૐ޿୯ߢ߶߷

㕙Ⓧ₸ f/f0 ߇  એ਄ߢ㓸Ⴒ₸߇ 㧑એ਄ߩ᷹ቯ⚿ᨐߪ࿕ቯ৻ቯߦߥࠆ㧚ౣ߮㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ࠍ⒖േߐߖߡ࿁ォࡉ࡜ࠪ㔚ᭂᣇᑼߩᣢ⸳㔚᳇㓸Ⴒⵝ⟎ߣ⒖േ㔚ᭂᣇᑼߩࡄࠗࡠ࠶࠻ߢ࠳ࠬ࠻ጀࠍហ߈⪭ߔߣ⩄㔚㔚࿶ߪరߦᚯࠅ㓸Ⴒ₸߽㜞޿㓸Ⴒⵝ⟎ࠍ⚵วߖߚߣ߈ߩ㓸Ⴒ₸ࠍ␜ߒߡ޿ࠆ㧚 ࿕ቯ㔚ᭂ୯ߦᚯࠆ㧚ᣇᑼߩ㓸Ⴒቶ㧔એਅ࿕ቯ㔚ᭂㇱߣ⇛ߔ㧕ߣ⒖േ㔚ᭂᣇᑼߩ㓸㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ࠍ࠴ࠚ࡯ࡦߢㅪ⚿ߒߡࠠࡖ࠲ࡇ࡜ߩᒻ

Ⴒቶ㧔એਅ⒖േ㔚ᭂㇱߣ⇛ߔ㧕ࠍ⚵วߖߚߣ߈ߩ㓸Ⴒ₸ߩᦛ⁁ߦߒߚ㓸Ⴒᭂ࡟࡯ࡦ 㧕ߩ๟㐳ࠍ 30m㧘㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߩ

✢ߪ࿕ቯ㔚ᭂㇱߣ⒖േ㔚ᭂㇱߢ௑ᢳ߇ᄢ᏷ߦ⇣ߥࠅ㧘᛬✢ߣ

⒖േㅦᐲࠍ 0.5m/min ߣߔࠆߣ㧘㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߪ 1 ᤨ㑆Ფߥߞߡ޿ࠆ㧚

ߦ࠳ࠬ࠻ጀࠍࡉ࡜ࠪߢហ߈⪭ߔߎߣߦߥࠆ㧚࠳ࠬ࠻ᛄ⪭ߒ߇
ߎߩ⒟ᐲߩ㑆㓒ߢ޽ࠇ߫㧘㓸Ⴒ₸ߩૐਅߪߐ߶ߤᄢ߈ߊߥߊ㧘㜞ᛶ᛫࠳ࠬ࠻ߩ㓸Ⴒߦ⒖േ㔚ᭂᣇᑼߩㆡ↪߇น⢻ߣ⠨߃ߚ㧚
2.4⍹ᴤធ⸅ಽ⸃⸅ᇦ࠳ࠬ࠻㓸Ⴒ߳ߩ⒖േ㔚ᭂᣇᑼߩታ
ᯏㆡ↪

3.

࿕ቯ㔚ᭂᣇᑼߣ⒖േ㔚ᭂᣇᑼߩ⚵วߖ㓸Ⴒᕈ⢻

3.1 㓸Ⴒᕈ⢻⹏ଔᣇᴺߩᬌ⸛㔚᳇㓸Ⴒⵝ⟎ߩ㓸Ⴒ₸ߣ㓸Ⴒ㕙Ⓧߩ㑐ଥߥߤ㧘㓸Ⴒⵝ⟎ߩ⸳⸘ߦߪ೨ㅀߩ Deutch ߩᑼߦୃᱜࠍട߃ߚᑼ(3)ߩ Matts ߩୃࡄࠗࡠ࠶࠻㓸Ⴒⵝ⟎ߩታ㛎⚿ᨐࠍ߽ߣߦ⍹ᴤಽ⸃ࠟࠬΆᱜᑼ 㧕ࠍ↪޿ߡ޿ࠆ㧚ߎߩߣ߈㔚᳇㓸Ⴒⵝ⟎ߩ㓸Ⴒ₸᷹ቯ⚿὾ࡏࠗ࡜↪ߩ⒖േ㔚ᭂᣇᑼ㔚᳇㓸Ⴒⵝ⟎ࠍ⸳⸘ߒߡ㧘ᣢ⸳㔚ᨐߪ Matts ߩୃᱜᑼߦㆡ↪ߒߡ࠳ࠬ࠻⒖േㅦᐲߣȁM ଥᢙ k᳇㓸Ⴒⵝ⟎ߩਅᵹߦ⸳⟎ߒߚ㧚⍹ᴤಽ⸃ࠟࠬΆ὾ࡏࠗ࡜ߩឃߩታ❣୯ߣߒߡ᳞߼㧘⸳⸘⾗ᢱߣߒߡ⫾Ⓧߒ㧘ᵴ↪ߒߡ޿ࠆ㧚ࠟࠬߪ࿑  ߦ␜ߔࠃ߁ߦ࿕ቯ㔚ᭂᣇᑼߩ㓸Ⴒቶ  ඙ߣ⒖േ㔚ᭂᣇᑼߩ㓸Ⴒቶ 1 ඙ߢ㓸Ⴒߐࠇߡ߆ࠄឃ಴ߐࠇࠆ㧚࿑ ߦ⒖േ㔚ᭂᣇᑼߩᣂ⸳㔚᳇㓸Ⴒⵝ⟎߅ࠃ߮࿕ቯ㔚ᭂᣇᑼߩᣢ⸳㔚᳇㓸Ⴒⵝ⟎ߩ㓸Ⴒ₸᷹ቯ⚿ᨐࠍ㤥ὐߢ␜ߔ㧚࿑ਛߩᲧ㓸Ⴒ㕙Ⓧ₸ f/f0 ߇  ߢ㓸Ⴒ₸߇ 㧑⒟ᐲߩ᷹ቯ⚿ᨐߪ⒖േ㔚ᭂᣇᑼߩᣂ⸳㔚᳇㓸Ⴒⵝ⟎ߩ౉ญᾍ㆏߅ࠃ߮಴ญᾍ㆏ߢ᷹ቯߒߚ࠳ࠬ࠻Ớᐲ߆ࠄ▚಴ߒߚ㓸Ⴒ₸ߢ޽ࠆ㧚ߎߩ᷹ቯ⚿ᨐࠍ⒖േ㔚ᭂᣇᑼࡄࠗࡠ࠶࠻㓸Ⴒⵝ⟎ߦࠃࠆ᷹ቯ⚿ᨐࠍᲧセߔࠆߣ㧘⒖േ㔚ᭂᣇᑼߩᣂ⸳㔚᳇㓸Ⴒⵝ⟎ߩ㓸Ⴒ₸ߪࡄࠗࡠ࠶࠻㓸Ⴒⵝ⟎ߢᓧࠄࠇߚᲧ㓸Ⴒ㕙Ⓧ₸ߣ㓸Ⴒ₸ߩ㑐

CoCi

^

exp  ( Zk u f ) k`(3)ߎߎߢȁM ߪ Matts ߩୃᱜᑼߦ߅ߌࠆ࠳ࠬ࠻⒖േㅦᐲ (m/s)ߢ޽ࠆ㧚k ߪ࠳ࠬ࠻ߩ☸ᓘಽᏓߥߤߢ᳿߹ࠆቯᢙߢ৻⥸ߦ0.5
㨪0.75 ߩ୯ߣߥࠅ㧘⍹὇Ά὾ߢ⊒↢ߔࠆࡈ࡜ࠗࠕ࠶ࠪࡘߪ 0.5⒟ᐲ޿ࠊࠇߡ޿ࠆ 㧕㧚࿕ቯ㔚ᭂㇱߣ⒖േ㔚ᭂㇱࠍ⚵วߖߚ⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߩᲧ㓸Ⴒ㕙Ⓧߣ㓸Ⴒ₸ߩ㑐ଥߩ᭎ᔨ࿑ࠍ࿑ 9 ߦ␜ߔ㧚࿕ቯ㔚ᭂㇱߩ࠳ࠬ࠻⒖േㅦᐲȦk1 ߣ⒖േ㔚ᭂㇱߩ࠳ࠬ࠻⒖േㅦ
ᐲ Ȧk2 ߪᄢ߈ߊ⇣ߥࠆߚ߼㧘࿕ቯ㔚ᭂㇱߣ⒖േ㔚ᭂㇱࠍ⚵ว227 (35)Fixed electrodeMoving electrodesectionsection
f1+f2
f1= f0+fǪ
f0f0
fǪ
f2

Dust density Ci
Collection efficiency C1
Migration velocity ȁk1
k1
Coefficient k

Penetration (%)

1000

Co1

C2
ȁk1
k1

Co2

Specific collection area f (s/m)
f0P1faf1

f1+f2ȁM0C1

ȁM

P2C3
ȁk2k2C2

ȁM
C3P3

^

C O 2 C i u exp  ( Zk 1 u f 1 ) k 1

Co3

`

(7)

Co2 ߪ⒖േ㔚ᭂㇱߩ౉ญ࠳ࠬ࠻Ớᐲߣߥࠅ㧘⒖േ㔚ᭂㇱߩ಴ญ࠳ࠬ࠻Ớᐲߪᑼ(8)ߢ Co3 ߣߥࠆ㧚^CO 2 u exp  ( Zk 2 u f 2 )k 2

CO 3

Collection efficiency (%)

Total of specificcollection area
Specific collectionarea`(8)ᑼ(7)ࠍᑼ(8)ߦઍ౉ߒߡᢛℂߔࠆߣ㧘⒖േ㔚ᭂㇱߣ࿕ቯ㔚ᭂࠍ⚵วߖߚ⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߩ಴ญ࠳ࠬ࠻Ớᐲߪᑼ(9)ߣߥࠆ㧚CO 3>^C i u exp  ( Z k 1 u f 1 ) k 1  ( Z k 2 u f 2 ) k 2`@ (9)

࿑ 9 ࿕ቯ㔚ᭂㇱߣ⒖േ㔚ᭂㇱࠍ⚵วߖߚߣ߈ߩ
Ყ㓸Ⴒ㕙Ⓧߣ㓸Ⴒ₸ߩ㑐ଥ
Fig.9 Relation of collection efficiency and specificcollection area for the combination of the fixed
electrode and the moving electrode sections.
ߖߡ᷹ቯߒߚ㓸Ⴒ₸߆ࠄ᳞߼ߚ࿑  ߩ࠳ࠬ࠻⒖േㅦᐲ Ȧk3 ߪ㧘ߣ k1㧘k2 ߇ᔅⷐߢ޽ࠆ㧚ߎࠇࠄࠍ᳞߼ࠆߦߪ㧘࿕ቯ㔚ᭂㇱߣ

Ȧk1 ߅ࠃ߮ Ȧk2 ߣߪ⇣ߥߞߡ޿ࠆ㧚ߎߩߚ߼࿕ቯ㔚ᭂㇱߣ⒖ะߩ㓸Ⴒቶࠍ߽ߟ߽ߩ߇ᄙߊ㧘ߘߩ߁ߜߩ 1 ඙ࠍ⩄㔚஗ᱛߒേ㔚ᭂㇱߩ㓸Ⴒ㕙Ⓧ߇⇣ߥࠆᣂⷙߩ⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝߡ࿕ቯ㔚ᭂㇱߩ Ȧk1 ߣ k1 ࠍ᳞߼ࠆߎߣ߇ߢ߈ࠆ㧚ߒ߆ߒ㧘⟎ߩ㓸Ⴒ㕙Ⓧࠍ Ȧk3 ߣ M ߩታ❣୯߆ࠄ⸳⸘ߔࠆߎߣߪ࿎㔍ߢ⒖േ㔚ᭂㇱߪ৻⥸ߦ಴ญ஥ߩ 1 ඙ߩߺߣߥߞߡ޿ࠆ㧚ߎߩߚ޽ࠆ㧚ߘߎߢᓥ᧪߆ࠄ⫾Ⓧߒߡ߈ߚ Ȧk1 ߣ k ࠍᵴ↪ߒߡ࿕ቯ߼㧘Ȧk2 ߣ k2 ࠍ᳞߼ࠆߩߪ㔍ߒ޿㧚਄⸥ߩᑼߩዷ㐿ߢߪ࿕ቯ㔚ᭂㇱߣ⒖േ㔚ᭂㇱߩ Ȧk1㧘Ȧk2⒖േ㔚ᭂㇱߦߟ޿ߡᲧ㓸Ⴒ㕙Ⓧߩ⇣ߥࠆ᧦ઙߢ㓸Ⴒ₸ࠍ᷹ቯߒߥߌࠇ߫ߥࠄߥ޿㧚࿕ቯ㔚ᭂㇱߪ 2 ඙એ਄ߩࠟࠬᵹࠇᣇ㔚ᭂㇱߩ㓸Ⴒ㕙Ⓧ f1 ࠍ᳞߼ࠆߣ౒ߦ㧘⒖േ㔚ᭂㇱߩㆇォታ❣

⮮᧛╬ߩ⎇ⓥ⚿ᨐ 㧕ߢߪ㧘࠳ࠬ࠻☸ᓘ߇ᱜⷙኻᢙಽᏓߔ߿ࡄࠗࡠ࠶࠻⹜㛎ߦࠃߞߡᓧࠄࠇࠆȦk2 ࠍ↪޿ߡ⒖േ㔚ᭂဳࠆߣߒߡ☸ᓘ೎ߦ Deutsch ߩᑼߢ⸘▚ߒߚ㓸Ⴒ₸ߪ Matts ߩ㔚᳇㓸Ⴒⵝ⟎ߩ⸳⸘߇ߢ߈ࠆ㓸Ⴒᕈ⢻⹏ଔᣇᴺࠍᬌ⸛ߒߚ㧚ୃᱜᑼߩ㓸Ⴒ₸ߣ߶߷৻⥌ߒߡ޿ࠆ㧚ߔߥࠊߜ Matts ߩୃᱜ

ᑼ(3)ߩ Matts ߩୃᱜᑼߣ㔚᳇㓸Ⴒⵝ⟎ߩ㓸Ⴒ₸ǯ(-)㧘ㅺ಴ᑼߪ Deutsch ߩᑼߦ☸ᓘߦࠃࠆ࠳ࠬ࠻⒖േㅦᐲߩ㆑޿ࠍ෻ᤋ

₸ P(-)ߪᑼ(4)ߩ㑐ଥߦ޽ࠆ㧚

PCoCiߒߚᑼߣ⸒߃ࠆ㧚࿕ቯ㔚ᭂᣇᑼߣ⒖േ㔚ᭂᣇᑼߦ߅ߌࠆ࠳ࠬ࠻⒖േㅦᐲߩ

1 K

(4)

Matts ߩୃᱜᑼߢߪ࿑  ߩ᭎ᔨ࿑ߦ␜ߔᲧ㓸Ⴒ㕙Ⓧ߇ f0 ߣf1 ߦ߅ߌࠆㅺ಴₸ P1 ߣ P2 ߇᳞߼ࠄࠇߡ޿ࠆ႐วߪ㧘ߎࠇࠄߩ୯ࠍᑼ(3) ߦઍ౉ߒߡ࠳ࠬ࠻⒖േㅦᐲȁM ࠍᑼ(5)㧘ଥᢙ M
ࠍᑼ(6)ߢ▚಴ߢ߈ࠆ 㧕㧚k(  log P 2 ) kf1§ log P 1 ·¸¸log ¨¨© log P 2 ¹f0logf1᡼㔚ߢ⊒↢ߔࠆ⽶ࠗࠝࡦࠃࠆਔᭂᕈ⩄㔚ࠍ⠨ᘦߔࠆᔅⷐ߇
޽ࠆ㧚⒖േ㔚ᭂᣇᑼߢߪㅒࠦࡠ࠽ߪ⊒↢ߒߡ޿ߥ޿ߩߢ㧘᡼㔚✢ߩࠦࡠ࠽᡼㔚ߢ⊒↢ߔࠆ⽶ࠗࠝࡦࠃࠆᏪ㔚ߩߺࠍ⠨߃ߴߡㅒࠦࡠ࠽᧦ઙߦࠃࠆਔᭂᕈ⩄㔚ߢߪᄢ߈ߊૐਅߔࠆ㧚ਔ(5)ᭂᕈ⩄㔚ߩ㘻๺Ꮺ㔚㊂㨝 㧯 ߪᑼ  ߢ␜ߐࠇࠆ 㧕㧚q(6)⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߪ࿕ቯ㔚ᭂㇱߣ⒖േ㔚ᭂㇱߩ⚵วߖߢ޽ࠆ߆ࠄ㧘࿕ቯ㔚ᭂㇱߩ಴ญ࠳ࠬ࠻Ớᐲ Co2 ߪᑼ(7)ߢ᳞߼ࠄࠇࠆ㧚ᭂᣇᑼߢߪㅒࠦࡠ࠽ߢ⊒↢ߔࠆᱜࠗࠝࡦߣ᡼㔚✢ߩࠦࡠ࠽ࠇ߫ࠃ޿㧚࠳ࠬ࠻ߩᏪ㔚㊂ߪ⽶ࠗࠝࡦߦࠃࠆනᭂᕈ⩄㔚ߦᲧ

1Zk㆑޿ߦߟ޿ߡᬌ⸛ߔࠆ㧚࠳ࠬ࠻ߩ☸ᓘ೎ߩᏪ㔚㊂ߪ㧘࿕ቯ㔚

4 SH 0Hs
a2E u
Hs  2

1

i
i

1

i
i

(10)

ߎߎߦߢǭ ߪ⌀ⓨߩ⺃㔚₸ (O ߢ޽ࠅ㧘ǭU ߪ☸ሶߩᲧ⺃㔚₸ߢ޽ࠆ㧚C ߪ☸ሶඨᓘ O 㧘' ߪ㔚⇇ᒝᐲ 8O 㧘K Kߪ
ᱜ⽶ࠗࠝࡦ㔚ᵹኒᐲ #O ߢ޽ࠆ㧚ਔᭂᕈ⩄㔚ߩ᧦ઙߢߪᏪ㔚㊂߇ᄢ߈ߊૐਅߔࠆߚ߼ߦ࠳

228 (36)30
5
2006⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߩㆇォታ❣ߣ㓸Ⴒᕈ⢻⹏ଔ㧔ਃဈବ᣿ࠄ㧕

ࠬ࠻⒖േㅦᐲ Ȧk ߪ࿕ቯ㔚ᭂᣇᑼߣ⒖േ㔚ᭂᣇᑼߢᄢ߈ߊ⇣ ߩ㑐ଥ߇᳞߹ࠆ㧚ߥߞߚ୯ߣߥࠆ㧚ߒ߆ߒ☸ሶߩᏪ㔚㊂߇☸ᓘߩ  ਸ਼ߦᲧ଀ߔ

^Z k 2 u ( f 2  fa )`k( Z k 1 u f 1 )kࠆ㑐ଥߪਔᭂᕈ⩄㔚ߢ߽⽶ࠗࠝࡦߩߺߦࠃࠆනᭂᕈ⩄㔚ߢ

(16)ᑼ  ࠍ fa ߦߟ޿ߡᢛℂߔࠆߣᑼ  ߇ᓧࠄࠇࠆ㧚߽หߓߢ޽ࠆ߆ࠄ㧘࿕ቯ㔚ᭂᣇᑼߣ⒖േ㔚ᭂᣇᑼߢ☸ᓘߦࠃ
ࠆ࠳ࠬ࠻⒖േㅦᐲߩ㆑޿ߪห৻ߩ௑ะࠍ␜ߔߎߣߦߥࠆ㧚ߔfaߥࠊߜ☸ᓘ೎ߩ࠳ࠬ࠻⒖േㅦᐲߪ⛘ኻ୯߇ᱜࠗࠝࡦߩሽ࿷
ߦࠃߞߡᓇ㗀ࠍฃߌࠆ߇㧘☸ᓘߦࠃࠆ㆑޿ߪ࿕ቯ㔚ᭂᣇᑼߢ

Zk 1 ·§
f 1u ¨ 1 ¸
© Zk 2 ¹(17)ᑼ  ࠍᑼ(12)ߦઍ౉ߔࠆߣᑼ(18)ߣߥࠆ㧚

߽⒖േ㔚ᭂᣇᑼߢ߽หߓߣߥࠆ㧚ߎߩߚ߼࠳ࠬ࠻⒖േㅦᐲ Ȧkߪ࿕ቯ㔚ᭂᣇᑼߣ⒖േ㔚ᭂᣇᑼߢ⇣ߥࠆ߇㧘ቯᢙ k ߪ࿕ቯ㔚ª­
Zk 1 ·½º§¸¾»«Zk 2 u ® f  f 1 u ¨ 1 © Zk 2 ¹¿¼»¯¬«Co logCiᭂㇱߣ⒖േ㔚ᭂㇱߢหߓ୯ߦߥࠆߣ⠨߃ࠄࠇࠆ㧚k(18)਄⸥ߩᬌ⸛⚿ᨐࠍᬌ⸽ߔࠆߚ߼ߦ㧘࿑  ߩ⍹ᴤធ⸅ಽ⸃ⵝ
⟎ߦ߅ߌࠆ㓸Ⴒ₸᷹ቯ⚿ᨐࠍ↪޿ߡᑼ  ߩቯᢙ k ߣ㧘ᑼ 

f=f1+f2 ߦ߅޿ߡ Co=Co3 ߢ޽ࠆ߆ࠄᑼ(18)ߪᑼ(19)ߣߥ

ߩ࠳ࠬ࠻⒖േㅦᐲቯᢙ Ȧk ࠍ▚಴ߒߚ㧚ߘߩ⸘▚⚿ᨐ߆ࠄ㓸ࠆ㧚Ⴒ₸ߣᲧ㓸Ⴒ㕙Ⓧ₸ߩ㑐ଥࠍ࿑ਛߦታ✢ߢ␜ߒߚ㧚࿑  ࠍ⷗ࠆߣ⸘▚⚿ᨐߣ㓸Ⴒ₸ߩ᷹ቯ⚿ᨐߪ⦟޿৻⥌ࠍ␜ߒߡ޿ࠆ㧚

Co 3Ci log

Co 3Ciࠃߞߡ㧘⒖േ㔚ᭂᣇᑼߢߩଥᢙࠍ࿕ቯ㔚ᭂᣇᑼߢ᳞߼ߚଥᢙ

k ߣห৻ߣ⠨߃ߚ㧚ߎߩߣ߈㧘࿕ቯ㔚ᭂㇱߢ޽ࠆ 㧨f㧨f1 ߩ▸࿐ߢߪᑼ(3)ߪᑼ
(11)ߣߥࠆ㧚
 log

CoCi

ª
­
Zk1
§
·½º
f 1¸¾»«Z k 2 u ®( f 1  f 2 )  ¨ f 1 Zk2©
¹ ¿ ¼»¯¬«

 log( Z k 1 u f 1  Z k 2 u f 2 )kk(19)ࠃߞߡ㧘࿕ቯ㔚ᭂㇱߣ⒖േ㔚ᭂㇱࠍ⚵วߖߚ⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߩ㓸Ⴒᕈ⢻ᑼߪᑼ(20)ߣන⚐ൻߢ߈ࠆ㧚( Zk 1 u f )k(11)Co3CiᲧ㓸Ⴒ㕙Ⓧߣ㓸Ⴒ₸ߩ㑐ଥࠍ␜ߔ․ᕈᦛ✢߇㓸Ⴒ₸ 0 ߩゲ^

exp  ( Zk 1 u f 1  Zk 2 u f 2 )k

`

(20)

ᑼ(20)ߢߪ㧘ߎࠇ߹ߢ⸳⸘⾗ᢱߣߒߡ⫾Ⓧߒߡ߈ߚ࿕ቯ㔚ࠍᮮಾࠆ઒ᗐߩὐࠍ fa ߣߔࠆߣ㧘 f1㧨f㧨f2 ߩ▸࿐ߢᑼ ᭂᣇᑼ㔚᳇㓸Ⴒⵝ⟎ߢ߃ࠄࠇߚታ᷹୯ߩ Ȧk ߣ k ࠍ Ȧk1 ߣ kߪᑼ(12)ߣߥࠆ㧚ߣߒߡ↪޿ࠆߎߣ߇ߢ߈ࠆߩߢ㧘ࡄࠗࡠ࠶࠻⹜㛎߿ታᯏታ᷹
 logCoCi^Z k 2 u ( f  fa )`k⚿ᨐࠍ↪޿ߡ⒖േ㔚ᭂㇱߩ Ȧk2 ࠍ᳞߼ࠇ߫㧘࿕ቯ㔚ᭂㇱߣ⒖(12)േ㔚ᭂㇱࠍ⚵วߖߚ⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߩ㓸Ⴒ㕙Ⓧߩ⸳⸘߇น⢻ߣߥࠆ㧚f=f1 ߢ Co=Co2 ߢ޽ࠅ㧘߆ߟ Co2/ Ci =P2 ޽ࠆ߆ࠄ㧘ߎߩ㑐ଥࠍᑼ(12)ߦઍ౉ߔࠆߣᑼ(13)߇ᓧࠄࠇࠆ㧚 log P 2

^Z k 2 u ( f 1  fa )`k3.2 㓸Ⴒᕈ⢻⹏ଔᑼߩㆡ↪

(13) ⍹὇Ά὾ࡏࠗ࡜↪㔚᳇㓸Ⴒⵝ⟎ߦ߅ߌࠆታ㛎
ᑼ(20)ߩ㓸Ⴒᕈ⢻⹏ଔᑼߩㆡ↪ࠍᬌ⸛ߔࠆߚ߼ߦ⍹὇Ά὾

߹ߚ f=f1+f2 ߢ Co3/ Ci =P3 ߩ㑐ଥࠍᑼ(12)ߦઍ౉ߔࠆߣ

ࡏࠗ࡜ߦ⸳⟎ߒߡ޽ࠆ㔚᳇㓸Ⴒⵝ⟎ࠍ↪޿ߡ㓸Ⴒᕈ⢻ߩ᷹

ᑼ(14)߇ᓧࠄࠇࠆ㧚 log P 3ቯࠍߒߚ㧚⍹὇Ά὾ࡏࠗ࡜ߩឃࠟࠬಣℂࠪࠬ࠹ࡓࠍ࿑ 10 ߦ

^Z k 2 u ( f 1  f 2  fa )`k␜ߔ㧚ߎߩࡏࠗ࡜ߪ㊀ᴤΆ὾߆ࠄ⍹὇Ά὾ߦォ឵ߐࠇߡ߅ࠅ㧘(14)

Fixed electrode typeelectrostatic precipitator

ᑼ(14)߆ࠄᑼ(13)ࠍᏅᒁ߈㧘Ȧk2 ߦߟ޿ߡᢛℂߔࠆߣᑼ(15)߇᳞߼ࠄࠇࠆ㧚

Coal firedboiler
1

Zk 21(  log P 3 ) k  (  log P 2 ) kf2

Moving electrode typeelectrostatic precipitator
Desulfurization unit

Airheater
Stack(15)Dust density

Ci

Co1Co2

࿑ 10 ⍹὇Ά὾ࡏࠗ࡜ឃࠟࠬಣℂࠪࠬ࠹ࡓFig. 10 Gas treatment system for the coal fire boiler.

f=f1 ߢ Co=Co2 ߩ㑐ଥࠍᑼ(11)ߣᑼ(12)ߦઍ౉ߔࠆߣᑼ
- 6 -229 (37)⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߩㆇォታ❣ߣ㓸Ⴒᕈ⢻⹏ଔ㧔ਃဈବ᣿ࠄ㧕Specific collection area (s/m)
50100㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߩ㓸Ⴒᕈ⢻ߪᑼ(20)ߢ␜ߔߎߣ߇ߢ߈
150

10.090

5.0

95

1.0
0.5

Ȧk1=0.276(m/s)
k=0.50Ȧk2=1.77(m/s)

0.10.05ᓥ᧪߆ࠄ⫾Ⓧߒߡ޿ࠆ࿕ቯ㔚ᭂㇱߩ Ȧk1 ߣ k ߩታ❣୯ࠍ↪޿㧘05099
99.5

ߎࠇߦ⒖േ㔚ᭂㇱߩ Ȧk2 ࠍട߃ࠆߎߣߢ㓸Ⴒ₸ߣᲧ㓸Ⴒ㕙ⓍCollection efficiency (%)

Penetration (%)

100
50.00ࠍ▚಴ߢ߈ࠆࠃ߁ߦߥߞߚ㧚4.

߹ߣ߼

⒖േ㔚ᭂᣇᑼߩࡄࠗࡠ࠶࠻㓸Ⴒⵝ⟎ࠍ↪޿ߡ㧘࠳ࠬ࠻㔚᳇ᛶ᛫₸߇㜞ߊߡ㔚᳇㓸Ⴒߩ࿎㔍ߥ⸅ᇦ࠳ࠬ࠻ࠍ฽߻⍹ᴤធ

99.9
99.95

⸅ಽ⸃ⵝ⟎ߩ⍹ᴤಽ⸃ࠟࠬΆ὾ࡏࠗ࡜ឃࠟࠬࠍኻ⽎ߦ⃻࿾ታ㛎ࠍⴕߞߚ㧚ߘߩ⚿ᨐ㧘⒖േ㔚ᭂᣇᑼߪ࿕ቯ㔚ᭂᣇᑼߩ 1/3⒟ᐲߩ㓸Ⴒ㕙Ⓧߢห৻ߩ㓸Ⴒ₸߇㆐ᚑߢ߈ߚ㧚߹ߚࡄࠗࡠ࠶

࿑ 11 ⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߩ࿕ቯ㔚ᭂㇱߣ
⒖േ㔚ᭂㇱߩᲧ㓸Ⴒ㕙Ⓧߣ㓸Ⴒ₸
Fig.11 Specific collection area vs. collection efficiency
for the combination of the fixed electrode and themoving electrode sections.

࠻㓸Ⴒⵝ⟎ߩታ㛎⚿ᨐࠍ߽ߣߦᣢ⸳㔚᳇㓸Ⴒⵝ⟎ߩਅᵹߦ⒖േ㔚ᭂᣇᑼߩ㔚᳇㓸Ⴒⵝ⟎ࠍჇ⸳ߒߚ㧚⒖േ㔚ᭂᣇᑼߩ㔚᳇㓸Ⴒⵝ⟎ߩ㓸Ⴒ₸ߪࡄࠗࡠ࠶࠻㓸Ⴒⵝ⟎ߢᓧࠄࠇߚ㓸Ⴒ
㕙Ⓧߣ㓸Ⴒ₸ߩ㑐ଥߩᑧ㐳✢਄ߦ޽ࠅ㧘⦟޿৻⥌߇ߺࠄࠇߚ㧚ߘߩߣ߈ߦ࿕ቯ㔚ᭂᣇᑼߩᣢ⸳㔚᳇㓸Ⴒⵝ⟎  ඙ᣇᑼ ߩਅ࿕ቯ㔚ᭂㇱߣ⒖േ㔚ᭂㇱࠍ⚵วߖߚ⒖േ㔚ᭂဳ㔚᳇㓸Ⴒᵹߦ࿕ቯ㔚ᭂᣇᑼ  ඙ߣ⒖േ㔚ᭂᣇᑼ  ඙߆ࠄߥࠆ⒖േ㔚ᭂⵝ⟎ߩ⸳⸘ߦᔅⷐߥ㓸Ⴒ㕙Ⓧࠍ▚಴ߔࠆߚ߼ߩ㓸Ⴒᕈ⢻⹏ဳ㔚᳇㓸Ⴒⵝ⟎ࠍჇ⸳ߒߚ㧚

ଔᣇᴺࠍᬌ⸛ߒߡ㧘⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߩ㓸Ⴒᕈ⢻ᑼࠍ࠳ࠬ࠻Ớᐲߪ࿑ 10 ߩ Ci㨪Co2 ߩฦὐߢ᷹ቯߒߚ㧚߹ߚ࿕ዉ޿ߚ㧚㓸Ⴒᕈ⢻ᑼߩᅷᒰᕈߪ⍹ᴤಽ⸃ࠟࠬΆ὾ࡏࠗ࡜ឃࠟ

ቯ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߩ╙ 2 ඙߅ࠃ߮⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝࠬ↪㔚᳇㓸Ⴒⵝ⟎ߣ⍹὇Ά὾ࡏࠗ࡜↪㔚᳇㓸Ⴒⵝ⟎ߩ㓸Ⴒ⟎ߩ⒖േ㔚ᭂㇱߩ⩄㔚ࠍ஗ᱛߒߚߣ߈ߦߟ޿ߡ߽᷹ቯߒߚ㧚₸ߣ㓸Ⴒ㕙Ⓧߩ᷹ቯ୯ࠍ↪޿ߡ⏕⹺ߒߚ㧚ߎࠇࠄߩ᷹ቯ࠺࡯࠲ࠍ↪޿ߡ㓸Ⴒ㕙Ⓧߣ㓸Ⴒ₸ࠍ᳞߼㧘࠳ࠬ
࠻⒖േㅦᐲ Ȧk ߣଥᢙ k ࠍᬌ⸛ߒߚ㧚ෳ⠨ᢥ₂㕒㔚᳇ቇળ✬㧦㕒㔚᳇ࡂࡦ࠼ࡉ࠶ࠢR㧘ࠝ࡯ࡓ␠㧔㧕2) ਃဈବ᣿㧘ᄢᶆ ᔘ㧘᦭శᱞ㓶㧦㕒㔚᳇ቇળ⹹㧘㧔㧕3) ਃဈବ᣿㧘ᄢᶆ ᔘ㧘⊕ਣାᒾ㧘᦭శᱞ㓶㧦㕒㔚᳇ቇળ⹹㧘 㧔㧕4) ㅢ↥⋭ࡊࡠ࠮ࠬ࡮ࡈࡠ࡯ࠪ࡯࠻⎇ⓥળ㧦ᡷ⸓⵾ㅧᎿ⒟࿑㓸 ╙  Ꮞ㧘R㧘ൻቇᎿᬺ␠㧔㧕5) H.J. White: Industrial Electrostatic Precipitation, p.309,
Addison-Wesly Publishing Co.㧔1963㧕6) ᳓㊁ ᓆ㧘ਃဈବ᣿㧘᧻ᧄ㓁৻㧦㕒㔚᳇ቇળ⹹㧘㧔㧕7) 㕒㔚᳇ቇળ✬㧦㕒㔚᳇ࡂࡦ࠼ࡉ࠶ࠢR㧘ࠝ࡯ࡓ␠㧔㧕8) W. Deutsch㧦Ann. Der Phys., 68㧔1922㧕3359) S.A. Matts㧦Proc. CSIRO Conf. on ESPR㧔1978㧕10) ⮮᧛⻞␭㧘⿷┙⦟ት㧦㕒㔚᳇ቇળ⹹㧘15㧔1991㧕27 㕒㔚᳇ቇળ✬㧦㕒㔚᳇ࡂࡦ࠼ࡉ࠶ࠢR㧘ࠝ࡯ࡓ␠㧔1) ⍹὇Ά὾ࡏࠗ࡜ߦ߅ߌࠆታ㛎⚿ᨐߣᬌ⸛࿕ቯ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߣ⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߢ᷹ቯߒߚ㓸Ⴒ₸ߣᲧ㓸Ⴒ㕙Ⓧࠍ࿑ 11 ߦ␜ߔ㧚ᮮゲߩ㓸Ⴒ㕙Ⓧ߇ UO એਅߩ㓸Ⴒ₸᷹ቯ⚿ᨐߪ࿕ቯ㔚ᭂㇱߩ⩄㔚஗ᱛߒߚߣ߈ߩ᷹ቯ⚿ᨐߢ޽ࠆ㧚࿕ቯ㔚ᭂㇱߩ㓸Ⴒ₸᷹ቯ⚿ᨐࠍᑼ ߣᑼ  ߦㆡ↪ߒߡ Ȧk1 ߣ k ࠍ▚಴ߒߚ㧚߹ߚଥᢙ k ߣ⒖േ㔚ᭂㇱߩ㓸Ⴒ₸᷹ቯ⚿ᨐࠍ↪޿ߡ Ȧk2 ࠍ᳞߼ߚ㧚࿕ቯ㔚ᭂㇱߩ Ȧk1 ߦᲧߴߡ㧘⒖േ㔚ᭂㇱߩ Ȧk2 ߪᄢ᏷ߦะ਄ߒߡ߅ࠅ⒖േ㔚ᭂㇱߩ㓸Ⴒᕈ⢻߇㜞޿ߎߣࠍ␜ߒߡ޿ࠆ㧚߹ߚ㧘k ߪ
0.5 ߣߥߞߡ޿ߚ㧚ታ✢ߪታ㛎⚿ᨐ߆ࠄᓧࠄࠇߚ Ȧk1㧘Ȧk2㧘k ࠍ↪޿ߡᑼ(20)ߢ⸘▚ߒߚᲧ㓸Ⴒ㕙Ⓧߣ㓸Ⴒ₸ߩ㑐ଥࠍ␜ߒߡ޿ࠆ㧚࿕ቯ㔚ᭂㇱߩᲧ㓸Ⴒ㕙Ⓧߣ㓸Ⴒ₸ߩታ᷹୯ߪᑼ
(20)ߩ⸘▚⚿ᨐߣ⦟޿৻⥌ࠍ␜ߒߡ޿ࠆ㧚એ਄ߩ⚿ᨐ߆ࠄ㧘࿕ቯ㔚ᭂㇱߣ⒖േ㔚ᭂㇱࠍ⚵วߖߚ⒖േ

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