静電植毛電極を用いた電気集じん装置におけるサブミクロン粒子の捕集効果

㕒㔚ᬀᲫ㔚ᭂ䉕↪䈇䈢㔚᳇㓸䈛䉖ⵝ⟎䈮䈍䈔䉎

ࠨࡉࡒࠢࡠࡦ☸ሶߩ᝝㓸ലᨐ

ᚑ ᄺ␵

_{ Ahmed ALY}

㧘 ᧘ ᚑ⪇

_{ 㜞ፉ ๺ೣ}

_{㧘᩵ㅴม}

_{㧘᳓㊁ᓆ}

Fine Particles Collection Using an Electrostatic Precipitator Equipped with

Electrostatic Flocking Electrodes as Collecting Plates

Bong-Jo SUNG

, Ahmed ALY

, Sung-Hwa LEE

, Kazunori TAKASHIMA

,

Shinji KATSURA

and Akira MIZUNO

(Received August 4, 2005; Accepted March 7, 2006)

In recent, special environmental concern is directed towards controlling the emission of fine particles (from 0.1 to

1.0

ঙ) . These fine particles possibly cause serious health hazard because of heavy metals and toxic compounds

adsorbed on the particles. To improve the collection efficiency of fine particles, electrostatic flocking technique has

been employed in this study. This technique is based on increasing surface area of the collecting electrode and on

producing gradient force at the tip of fibers to suppress reentrainment. In this article, an experimental study was

performed to evaluate the effect of fine fiber on the collection efficiency of fine particles using the ESP with

electrostatic flocking electrodes as collecting plates. The ESP achieved collection efficiency over 94%, which was

higher than that of the flat plate electrode for fine particles (0.3

0.5 ঙ in diameter) with a short residence time (0.06

s). We confirmed that fine particles agglomerated at the tip of the flocking fibers. These results indicate that the new

type ESP examined in this study is effective to improve removal performance of fine particles.

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䉖₸䈱ะ਄ 㪌㪄㪍㪀_{㪃㩷 䉧䉴ਛ䈮᳓ಽ䈭䈬䈱ᷝട೷䉕ട䈋䈩ౣ㘧ᢔ䉕} 㒐ᱛ䈜䉎䈖䈫䈭䈬㪃 ᄙ䈒䈱⎇ⓥ䈏ⴕ䉒䉏䈩䈇䉎 㪎㪄㪏㪀_{㪅 ᧄ⎇ⓥ䈪䈲} 㔚᳇㓸䈛䉖ⵝ⟎䈮䈍䈔䉎䉰䊑䊚䉪䊨䊮☸ሶ䈱㓸䈛䉖₸䉕ะ਄䈜 䉎䈢䉄䈮એਅ䈱ੑ䈧䈱ὐ䈮⌕⋡䈚䈢㪅 㩿㪈㪀㓸䈛䉖㔚ᭂ⴫㕙䈮䊌䉟 䊦䉕㕒㔚ᬀᲫ䈜䉎䈖䈫䈪䊌䉟䊦వ┵ㇱ䈮㔚⇇䈏㓸ਛ䈜䉎䈢䉄㪃 㓸䈛䉖䈘䉏䈢ᓸ☸ሶ䈏䉫䊧䊷䊂䉞䉣䊮䊃ജ䈮䉋䈦䈩᛼䈘䈋䈧䈔䉌 䉏㪃 ౣ㘧ᢔ䉕⿠䈖䈚䈮䈒䈒䈭䉎น⢻ᕈ䈏䈅䉎㪅㩷 㩿㪉㪀䉁䈢㪃 㓸䈛䉖㔚 ᭂ䈱㕙Ⓧ䈏Ⴧട䈜䉎䈖䈫䉇㪃 䈠䈱⴫㕙䈮ᒻᚑ䈘䉏䉎ᓸ⚦䈭ⓨ㑆 䈱ਛ䈪䈱ⓨ᳇䈱ᵹ䉏䈏Ⓩ䉇䈎䈮䈭䉎䈢䉄㪃㩷 ᓸ☸ሶ䉕ᯏ᪾⊛䈮 ଻ᜬ䈚䉇䈜䈒䈭䉎น⢻ᕈ䈏䈅䉎㪅 䈖䈱㔚᳇㓸䈛䉖ⵝ⟎䉕↪䈇䈩 㔚࿶㪄㔚ᵹ․ᕈ㪃 䉰䊑䊚䉪䊨䊮☸ሶ䈱㓸䈛䉖ᕈ⢻෸䈶㓸䈛䉖䈘䉏 䈢☸ሶ䈱⁁ᘒ䉁䈢䈲᳇ᵹਛ䈮䈍䈔䉎☸ሶ᜼േ䉕ታ㛎⊛䈮ᬌ⸛ 䈚䈢㪅㩷  ታ 㛎  㕒㔚ᬀᲫߩේℂ ᐔ᧼㔚ᭂ㑆䈮⋥ᵹ㔚࿶䉕ශട䈜䉎䈫㔚ᭂ㑆䈮㔚⇇䈏ᒻᚑ䈘 䉏㪃 㔚ᭂ਄䈮⟎䈎䉏䈢❫⛽⁁䈱⺃㔚૕䊌䉟䊦䈲㔚⇇ਛ䈪ಽᭂ 䈚㪃 䈠䈱ਔ┵䈮ಽᭂ㔚⩄䉕↢䈝䉎㪅㩷 ಽᭂ䈱⚿ᨐ㪃⺃㔚૕䊌䉟䊦 䈲㔚⇇ᣇะ䈮㈩ะ䈜䉎㪅 䈘䉌䈮⺃ዉᏪ㔚䈘䉏㪃 ኻะ㔚ᭂ䈱ᣇะ 䈻䉪䊷䊨䊮ജ䈏૞↪䈜䉎㪅 㕒㔚ᬀᲫ䈲䈖䉏䉌䈱ജ䉕೑↪䈚䈩ၮ ⋚䈮ု⋥䈮❫⛽䉕ᬀᲫ䈜䉎䉅䈱䈪䈅䉎㪅 ଀䈋䈳㪃 ਅㇱ㔚ᭂ਄䈮 ⟎䈎䉏䈢䊅䉟䊨䊮䊌䉟䊦䈮⽶䈱㔚⩄䉕ਈ䈋䉎䈫㪃 䊅䉟䊨䊮䊌䉟䊦 䈮䉪䊷䊨䊮ജ䈏૞↪䈚䈩ធ࿾㔚ᭂ䈪䈅䉎ၮ᧚䈻ะ䈎䈦䈩㘧⠍䉕 㐿ᆎ䈜䉎㪅㩷 ၮ᧚਄䈮䈅䉌䈎䈛䉄ធ⌕೷䉕⭯䈒ဋ৻䈮ႣᏓ䈚䈩䈍 䈔䈳㪃 䈠䈖䈮೔㆐䈚䈢䊌䉟䊦䈲ၮ᧚⴫㕙䈮ု⋥䈮࿕ቯ䈘䉏䉎㪅  㕒㔚ᬀᲫ㔚ᭂ⵾૞ 㕒㔚ᬀᲫ㓸䈛䉖㔚ᭂ䈱⵾૞䈮↪䈇䈢ⵝ⟎䈱᭎⇛䉕 㪝㫀㪾㪅㪈 䈮 ␜䈜㪅㩷 ਄ㇱ㔚ᭂ䈫ਅㇱ㔚ᭂ䈲䈠䉏䈡䉏 㪍㪇㫄㫄㬍㪈㪉㪇㫄㫄 䈱ᄢ䈐䈘 䈱㊄ዻ✂㩿㪉㪇 䊜䉾䉲䊠㪃 ෘ䈘 㪈㫄㫄㪀෸䈶䉝䊦䊚䊆䉡䊛᧼䈪䈅䉎㪅 㔚 ᭂ㑆〒㔌䈲 㪊㪌㫄㫄 䈮⸳ቯ䈚䈢㪅 㕖ዉ㔚ᕈ䈱วᚑ᮸⢽ធ⌕೷䉕 ဋ৻䈮ႣᏓ䈚䈢㊄ዻ✂䉕਄ㇱ㔚ᭂ䈮࿕ቯ䈚㪃㩷 䊅䉟䊨䊮䊌䉟䊦䉕 ਅㇱ㔚ᭂ਄䈮⟎䈇䈢㪅 䈭䈍㪃 䊌䉟䊦䈱㘧⠍ᕈ෸䈶ዉ㔚ᕈઃਈ 䈱䈢䉄䈮ᧄ⎇ⓥ䈪䈲૕Ⓧᛶ᛫₸ 㪈㪇㪏㩷_{㷧㫄 એਅ䈱䊅䉟䊨䊮䊌䉟䊦} 䉕↪䈇䈢㪅㩷 䊅䉟䊨䊮䊌䉟䊦䈱⋥ᓘ䈲⚂ 㪉㪇 ঙ㪃㩷 㐳䈘 㪈㫄㫄 䈪䈅䉎㪅 ⋥ ᵹ 㔚 Ḯ ⵝ ⟎ 㩿㪟㪅㪭 㪩㪜㪞㪬㪣㪘㪫㪜㪛㩷 㪛㪅㪚㩷 㪧㪦㪮㪜㪩㩷 㪪㪬㪧㪧㪣㪰㩷 㪤㪦㪛㪜㪣㪄㪌㪇㪉㪃㩷 㪧㫌㫃㫊㪼㩷 㪜㫃㪼㪺㫋㫉㫆㫅㫀㪺㩷 㪜㫅㪾㫀㫅㪼㪼㫉㫀㫅㪾㩷 㪚㫆㪅㩷 㪣㫋㪻㪀䉕↪䈇䈩 㪈㪇㫂㪭 䈱⽶ᭂᕈ㔚࿶䉕 㪊㪇 ⑽㑆ශട䈚䈩䊅䉟䊨䊮䊌䉟䊦䉕㘧⠍䈘 Nylon Pile Metal Mesh plate

Aluminum plate

Fig.1 A schematic illustration of the preparation of electrostatic flocking electrode.

Fig.2 A photograph of electrostatic flocking electrode. Metal mesh after electrostatic

flocking using nylon fibers

Metal mesh before electrostatic flocking

Fig. 3 Experimental set up for collection efficiency.

Flow meter

Tested

ESP

Blower

Straw pipes

Air flow

Sampling probe

Nebuilizer

Heating dryer

Particle generator

䈞㊄ዻ✂䈮ᬀᲫ䈚㪃 䈖䈱㊄ዻ✂䉕㓸䈛䉖㔚ᭂ䈫䈚䈢㪅 䈖䈱㓸䈛䉖 㔚ᭂ䈱౮⌀䉕 㪝㫀㪾㪅 㪉 䈮␜䈜㪅 㩷  ታ㛎ⵝ⟎᭎ⷐ 㪝㫀㪾㪅㪊 䈮ታ㛎䉲䉴䊁䊛䈱᭎⇛࿑䉕␜䈜㪅 ⵝ⟎䈲ㅍ㘑ㇱ㪃 ᢛᵹ ㇱ䋨ሹ䈱⋥ᓘ 㪊㫄㫄㪃 㐳䈘 㪈㪇㫄㫄 䈱䉴䊃䊧䊷䊅䊷䋩㪃 䊈䊑䊤䉟䉱䊷 䋨䉥䊛䊨䊮⵾㪃㩷 㪥㪜㪄㪚㪙㩿䉮䊮䊒䊧䉾䉰䊷ᑼ㪀䋩䈍䉋䈶ടᾲⵝ⟎䉕↪ 䈇䈢☸ሶ⊒↢ㇱ㪃 ታ㛎↪㔚᳇㓸䈛䉖ⵝ⟎㪃 ☸ᓘ೎䈱୘ᢙỚᐲ 䉕᷹ቯ䈜䉎䉻䉴䊃䉦䉡䊮䉺䋨䉻䊮⑼ቇ㪃 㪏㪉㪄㪈㪏㪇㪇䋩䈪᭴ᚑ䈘䉏䈩䈇 䉎㪅 䉻䉪䊃䈱ᢿ㕙Ⓧ䈲 㪐 ঞ䈪䈅䉎㪅 ㅍ㘑ㇱ䈎䉌䉪䊥䊷䊮䊦䊷䊛ౝ 䈱ቶ᳇䈫ታ㛎↪ᓸ☸ሶ䉕䉻䉪䊃ౝ䈮ଏ⛎䈚㪃㩷 ᢛᵹㇱ䉕ㅢㆊ䈘䈞 䈩৻᭽䈭ⓨ᳇䈱ᵹ䉏䉕૞䈦䈢㪅 䉻䉪䊃ౝㇱ䈱᳇ᵹㅦᐲ䈲ᵹㅦ⸘ 䋨㪢㪘㪥㪦㪤㪘㪯 㪤㪦㪛㪜㪣 㪍㪊㪈㪈䋩䉕↪䈇䈩᷹ቯ䈚 㪈㫄㪆㫊㪃 㔚᳇㓸䈛䉖 ⵝ⟎ౝㇱ䈪䈱ṛ⇐ᤨ㑆䉕 㪇㪅㪇㪍㫊 䈮⸳ቯ䈚䈢㪅 㪝㫀㪾㪅㪋 䈮䈲ෘ䈘 㪊㫄㫄 䈱䉝䉪䊥䊦ᐔ᧼䉕↪䈇䈩⵾૞䈚䈢❑ 㪍㪇㫄㫄㪃㩷 ᮮ 㪊㪍㫄㫄㪃 㜞䈘 㪊㪍㫄㫄 䈱㔚᳇㓸䈛䉖ⵝ⟎䈱⹦⚦䉕␜䈜㪅㩷 㔚᳇㓸䈛䉖ⵝ⟎䈱᡼㔚㔚ᭂ 䈫䈚䈩䉴䊁䊮䊧䉴✢㩿⋥ᓘ 㪇㪅㪈㫄㫄㪀䉕↪䈇㪃 㓸䈛䉖㔚ᭂ䈮䈲䉝䊦䊚 䊆䉡䊛ᐔ᧼㩿䉝䊦䊚䊁䊷䊒㪀㔚ᭂ㩿㪘㫃㫌㫄㫀㫅㫌㫄 㪽㫃㪸㫋㩷 㫇㫃㪸㫋㪼㪃㩷 㪘㪅㪝㪅㪧㪅㩷 㪜㫃㪼㪺㫋㫉㫆㪻㪼㪀䈅䉎䈇䈲㕒㔚ᬀᲫ㔚ᭂ㩿㪜㫃㪼㪺㫋㫉㫆㫊㫋㪸㫋㫀㪺 㪽㫃㫆㪺㫂㫀㫅㪾㪃 㪜㪅㪝㪅㩷 㪜㫃㪼㪺㫋㫉㫆㪻㪼㪀䉕↪䈇䈩Ყセ䉕ⴕ䈦䈢㪅 㔚ᭂ㑆〒㔌䈲䉝䊦䊚䊆䉡䊛ᐔ ᧼㔚ᭂ䈱႐ว 㪈㪌㫄㫄㪃 㕒㔚ᬀᲫ㔚ᭂ䈲 㪈㪊㫄㫄 䈪䈅䉎㪅 ታ㛎䈮䈲 䉰䊑䊚䉪䊨䊮☸ሶ䈫䈚䈩Ⱟశ☸ሶ 㩿㪝㫃㫌㫆㫉㪼㫊㪹㫉㫀㫋㪼 㪤㫌㫃㫋㪽㫃㫌㫆㫉㪼㫊㪺㪼㫅㫋 ⋥ᓘ 㪇㪅㪌 ঙ 㪤㫀㪺㫉㫆㫊㫇㪿㪼㫉㪼㫊㪀䈫䉺䊋䉮ᾍ䉕↪䈇䈢㪅 Ⱟశ☸ሶ䉕↪䈇 䈢ታ㛎䈪䈲Ớᐲ 㪊㪅㪐㬍㪈㪇㪈㪈_{୘㪆㫄㪣 䈱Ⱟశ☸ሶ䉕⚐᳓䈪 㪋㪇㪇㪇 ୚} 䈮Ꮧ㉼䈚㪃㩷 䊈䊑䊤䉟䉱䊷䉕↪䈇䈩ྃ㔵㪃㩷 䈠䈱䊚䉴䊃䉕ੇ῎䈘䈞䉎䈖 䈫䈮䉋䉍☸ሶ䉕᳇ᵹਛ䈮ዉ౉䈚䈢㪅 㩷  㔚࿶㔚ᵹ․ᕈ᷹ቯ 㪝㫀㪾㪅㪋 䈮␜䈜㔚᳇㓸䈛䉖ⵝ⟎䈮ኻ䈚䈩⽶ᭂᕈ㔚࿶䉕ශട䈚㪃ฦ 㓸䈛䉖㔚ᭂ䈮䈧䈇䈩ශട㔚࿶䈫䉮䊨䊅᡼㔚㔚ᵹ䈫䈱㑐ଥ䉕㔚ᵹ ⸘㩿㪛㫀㪾㫀㫋㪸㫃 㪤㫌㫃㫋㫀㫄㪼㫋㪼㫉㩷㪠㪮㪘㪫㪪㪬 㪭㪦㪘㪚㩷㪏㪍㪃㩷㪠㪮㪘㪫㪪㪬㪜㫃㪼㪺㫋㫉㫀㪺 㪚㫆㪅㪃 㪣㫋㪻㪀䉕↪䈇䈩᷹ቯ䈚䈢㪅㩷 㩷  ࠨࡉࡒࠢࡠࡦ☸ሶߩ㓸ߓࠎᕈ⢻᷹ቯ 䉝䊦䊚䊆䉡䊛ᐔ᧼㔚ᭂ䈫㕒㔚ᬀᲫ㔚ᭂ䉕↪䈇䈢㔚᳇㓸䈛䉖ⵝ ⟎䈮䉋䉎䉰䊑䊚䉪䊨䊮☸ሶ䈱㓸䈛䉖ᕈ⢻䈱Ყセ䉕 㪝㫀㪾㪅㪊 䈮␜䈜ታ 㛎䉲䉴䊁䊛䈪ⴕ䈦䈢㪅 ᢛᵹㇱ౉䉍ญ䈮䈍䈇䈩Ⱟశ☸ሶ䉇䉺䊋䉮 ᾍ䉕᳇ᵹ䈮ᷙว䈚䈩㔚᳇㓸䈛䉖ⵝ⟎䈮ଏ⛎䈚䈢㪅 㓸䈛䉖₸䈲㪃 㔚᳇㓸䈛䉖ⵝ⟎ㅢㆊ೨ᓟ䈱☸ሶ୘ᢙỚᐲ䉕䉻䉴䊃䉦䉡䊮䉺䈮䉋䉍 ᷹ቯ䈚㪃 㩿㪈㪀ᑼ䈮䉋䉍⸘▚䈚䈢㪅 䈢䈣䈚㪃 ☸ሶ୘ᢙỚᐲ䈮䈍䈔䉎᷹ ቯ☸ᓘ䈲 㪇㪅㪊㫣㪇㪅㪌 ঙ䈫䈚䈢㪅 㓸䈛䉖₸䋽 㩿䋱䋭㩷 㪀㬍㪈㪇㪇㩿㩼㪀㩷 㩿㪈㪀 䉁䈢㪃㩷 Ⱟశᓸ☸ሶ䉕↪䈇䈩㓸䈛䉖㔚ᭂ਄䈮䉰䊑䊚䉪䊨䊮☸ሶ䈏 㓸䈛䉖䈘䉏䉎᭽ሶ䉕ⷰኤ䈚䈢㪅 㔚ᭂ਄䈮㓸䈛䉖䈘䉏䈢Ⱟశᓸ☸ ሶ䉕ୟ┙ဳ⪭኿Ⱟశⷰኤⵝ⟎㩿㪠㪯㪄㪝㪣㪘㪃㪦㪣㪰㪤㪧㪬㪪㪀䈪ⷰኤ䈚䈢㪅 㩷  ታ㛎⚿ᨐ෸߮ᬌ⸛  㔚࿶̃ 㔚ᵹ․ᕈ 㪝㫀㪾㪅㪌 䈮ᧄ⎇ⓥ䈪↪䈇䈢㕒㔚ᬀᲫ㔚ᭂ෸䈶䉝䊦䊚䊆䉡䊛ᐔ᧼ 㔚ᭂ䈱㔚࿶㵧㔚ᵹ․ᕈ䉕␜䈜㪅 䈭䈍㪃 ታ㛎䈲᷷ᐲ 㪊㪉㷄⋧ኻḨ ᐲ 㪍㪇㩼䈱᧦ઙ䈪ⴕ䈦䈢㪅 ⽶ᭂᕈ㔚࿶䉕ශട䈚䈢႐ว䈇䈝䉏䈱㔚 ᭂ䉕↪䈇䈢႐ว䉅 㪌㪅㪌㫂㪭 䈎䉌䉮䊨䊅᡼㔚䈏㐿ᆎ䈚㪅 㪈㪊㫂㪭 એ਄䈪 Ἣ⧎᡼㔚䈏⿠䈖䈦䈢㪅 䉮䊨䊅㔚ᵹ䈲䉝䊦䊚䊆䉡䊛ᐔ᧼㔚ᭂ䈮Ყ ᵹ౉஥ᓸ☸ሶỚᐲ ᵹ಴஥ᓸ☸ሶỚᐲ

Fig. 5 Voltage-Current Characteristics. 36mm 60mm

E.E.Electrode or A.F.P.Electrod Front View Side View

Acryl plate of 3mm thickness

H.V. (-dc)

36mm Stainless steel wire (Diameter 0.1mm) Air

flow

Fig.4 Schematic diagram of tested ESP.

0 50 100 150 200 250 300 350 0 1 2 3 4 5 6 7 8 9 10 11 12 13 Applied Voltage(- kV) Current(µA 䯵 E. F. Electrode Gap=13mm A. F. P. Electrode Gap=15mm A. F. P. Electrode Gap=13mm

䈼䈩㕒㔚ᬀᲫ㔚ᭂ䈱ᣇ䈏䉒䈝䈎䈮㜞䈒䈭䈦䈢㪅㩷 䈖䉏䈲㕒㔚ᬀᲫ 㔚ᭂ䈱ᣇ䈏㔚ᭂ㑆〒㔌䈏ዊ䈘䈇䈢䉄㔚⇇ᒝᐲ䈏ᒝ䈒䈭䉍㪃㩷 䉮䊨 䊅㔚ᵹ୯䈏㜞䈒䈭䈦䈢䈢䉄䈪䈅䉎㪅㩷 䊅䉟䊨䊮䊌䉟䊦䈍䉋䈶ធ⌕೷ 䈱ᛶ᛫₸䈲ਇ᣿䈪䈅䉎䈏㪃 ቶ᷷䈪䈱ታ㛎䈪䈅䉍㪃 ⋧ኻḨᐲ䉅⚂ 㪍㪇㩼䈫㜞䈇䈢䉄㕒㔚ᬀᲫ㔚ᭂ䉕↪䈇䈢㔚᳇㓸䈛䉖ⵝ⟎䈮䈍䈇䈩 䉅ㅒ㔚㔌䈮䉋䉎䉮䊨䊅㔚ᵹ䈱⇣ᏱჇട䈲↢䈛䈭䈎䈦䈢㪅 䈭䈍㪃䉝 䊦䊚䊆䉡䊛ᐔ᧼㔚ᭂ䉕↪䈇䈩㔚ᭂ㑆〒㔌䉕 㪈㪊㫄㫄 䈫䈚䈢ታ㛎䈱 ⚿ᨐ䈎䉌㪃 䉝䊦䊚䊆䉡䊛ᐔ᧼㔚ᭂ䈫㕒㔚ᬀᲫ㔚ᭂ䈱㔚࿶䋭㔚ᵹ ․ᕈ䈲䈾䈿ห╬䈣䈦䈢㪅 㩷  ࠨࡉࡒࠢࡠࡦ☸ሶߩ㓸ߓࠎᕈ⢻ 㓸䈛䉖₸䈍䉋䈶䉮䊨䊅᡼㔚㔚ᵹ䈫ශട㔚࿶䈫䈱㑐ଥ䉕࿑ 㪍 䈮 ␜䈜㪅 䈭䈍㪃 ᧄታ㛎䈮䈲Ⱟశᓸ☸ሶ䉕૶↪䈚䈢㪅 䈭䈍㪃 ✚୘ᢙ Ớᐲ䈱 㪐㪐㩼એ਄䈲☸ሶᓘ 㪇㪅㪊 ঙ䈎䉌 㪇㪅㪌 ঙ䉁䈪䈱☸ሶ䈪䈅䉍㪃䈠 䈱ೋᦼ୘ᢙỚᐲ䈲⚂ 㪈㪅㪌㪎㬍㪈㪇㪋_{୘㪆㪣 䈪䈅䈦䈢㪅 䉮䊨䊅㔚ᵹ䈱ᄢ} 䈐䈭䈫䈖䉐䈪䈲䉝䊦䊚䊆䉡䊛ᐔ᧼㔚ᭂ䉋䉍㕒㔚ᬀᲫ㔚ᭂ䈱ᣇ䈏㓸 䈛䉖₸䈲㜞䈒䈭䈦䈢㪅 㕒㔚ᬀᲫ㔚ᭂ䈱႐ว㪃 ශട㔚࿶䈏㪄㪐㪭 䈱 ᤨ䈮㓸䈛䉖₸䈲 㪐㪋㩼એ਄䈪䈅䈦䈢㪅 䉁䈢㪃 ශട㔚࿶㪄㪐㫂㪭 䈮䈍䈇 䈩㓸䈛䉖₸䈱⚻ᤨᄌൻ䉕⺞䈼䈢㪅㩷 䈠䈱⚿ᨐ䉕 㪝㫀㪾㪅㪎 䈮␜䈜㪅㩷㪈 ᤨ 㑆⒟ᐲ䈪䈲㓸䈛䉖₸䈲 㪐㪌䋦⒟ᐲ䈪ᄌൻ䈞䈝㜞䈇㓸䈛䉖₸䉕⛽ ᜬ䈜䉎䈖䈫䉕⏕⹺䈚䈢㪅 ৻ᣇ㪃 䉝䊦䊚䊆䉡䊛ᐔ᧼㔚ᭂ䈱႐ว㪃 㓸䈛䉖₸䈲⚂ 㪏㪐䋦䈪䈅䈦䈢㪅 ᓥ䈦䈩㪃 㕒㔚ᬀᲫ㔚ᭂ䈱㔚᳇㓸䈛 䉖ⵝ⟎䉕↪䈇䉎䈖䈫䈪䉰䊑䊚䉪䊨䊮☸ሶ䉕㜞䈇ല₸䈪㓸䈛䉖䈜䉎 䈖䈫䈏䈪䈐䉎䈖䈫䈏ಽ䈎䈦䈢㪅 䈖䉏䈲㪃 㔚ᭂ⴫㕙䈮ᬀᲫ䈚䈢䊌䉟 䊦䈮䉋䉎㪃 㓸䈛䉖⴫㕙Ⓧ䈱ะ਄䈫䉫䊧䊷䊂䉞䉣䊮䊃ജ䈮䉋䉎ౣ㘧 ᢔᛥ೙䈪㪃 㓸䈛䉖₸䈏㜞䈒䈭䈦䈢䈫⠨䈋䉌䉏䉎㪅 ᓟㅀ䈱䉋䈉䈮㕒 㔚ᬀᲫవ┵䈮㓸䈛䉖䈘䉏䈢ᓸ☸ሶ䈏ᄙ䈒ⷰኤ䈘䉏䉎䈖䈫䈲㪃 㕒 㔚ᬀᲫవ┵ㇱ䈪䈱㔚⇇㓸ਛ䈮䉋䉎䉫䊧䊷䊂䉞䉣䊮䊃ജ䈪☸ሶ䈏 ᛼䈘䈋ઃ䈔䉌䉏㪃 ౣ㘧ᢔ䈏ᛥ೙䈘䉏䈩䈇䉎䈫⠨䈋䉌䉏䉎㪅 䉁䈢వ ┵ㇱ䈮㓸䈛䉖䈘䉏䉎䈢䉄㪃 ᓸ☸ሶ䈱ಝ㓸⢈ᄢൻ䉅ଦㅴ䈘䉏䉎䉅 䈱䈫ᕁ䉒䉏䉎㪅㩷  㓸ߓࠎߐࠇߚᓸ☸ሶߩⷰኤ 㕒㔚ᬀᲫ㔚ᭂ䈫䉝䊦䊚䊆䉡䊛ᐔ᧼㔚ᭂ਄䈮㓸䈛䉖䈘䉏䈢Ⱟశ ᓸ☸ሶ䈱౮⌀䉕 㪝㫀㪾㪅 㪏 䈮␜䈜㪅 䈖䉏䉌䈱౮⌀䈲ශട㔚࿶㪄㪏㫂㪭 䈪䋲ᤨ㑆㓸䈛䉖䉕ⴕ䈦䈢ᤨ䈱䉅䈱䈪䈅䉎㪅㩷 㪝㫀㪾㪅㪏㩿㪸㪀䈲᣿ⷞ㊁ᾖ᣿ 䈫Ⱟశⷞ㊁䉕⚵䉂ว䉒䈞䈩ᓧ䉌䉏䈢౮⌀䈪䈅䉍㪃 㩿㪹㪀䈲ห৻⹜ᢱ 䉕 㪋㪇 ୚䈱ኻ‛䊧䊮䉵䉕↪䈇䈩ᓧ䉌䉏䈢Ⱟశ௝䈪䈅䉎㪅 㩿㪺㪀䈲䉝䊦 䊚䊆䉡䊛ᐔ᧼㔚ᭂ䉕 㪋㪇 ୚䈱ኻ‛䊧䊮䉵䉕↪䈇䈩ⷰኤ䈚䈢Ⱟశ௝ 䈪䈅䉎㪅 㪝㫀㪾㪅㪏㩿㪹㪀㪃㩿㪺㪀䈱Ყセ䈎䉌㪃 䉝䊦䊚䊆䉡䊛ᐔ᧼㔚ᭂ䈫Ყ䈼㪃 ᬀᲫ䊌䉟䊦వ┵ㇱ䈮䈲ᄢ䈐䈭☸ᓘ䈱☸ሶ䈏ሽ࿷䈜䉎䈖䈫䈏ಽ䈎 䉎㪅 䈖䈱䈖䈫䈲 㪊㪅㪉 ▵䈮ㅀ䈼䈢䉋䈉䈮䊌䉟䊦వ┵䈪䈲㔚⇇ᒝᐲ䈏 㜞䈇䈢䉄㪃 䉮䊨䊅᡼㔚䈪Ꮺ㔚䈚䈢ᓸ☸ሶ䈏వ┵䈮㓸䈛䉖䈘䉏䉇 䈜䈒䈭䉍㪃 䈠䈱䈢䉄䊌䉟䊦వ┵䈪ಝ㓸⢈ᄢൻ䈚䈢䉅䈱䈫⠨䈋䉌䉏 䉎㪅 䉁䈢㪃 䉫䊧䊷䊂䉞䉣䊮䊃ജ䈪㪃 㓸䈛䉖䈘䉏䈢ᓸ☸ሶ䈏᛼䈘䈋 ઃ䈔䉌䉏㪃 ౣ㘧ᢔ䈏ᛥ೙䈘䉏䈢䈫⠨䈋䉌䉏䉎㪅 䈧䈑䈮㪃 䊋䉮ᾍ䉕 ↪䈇䈩㓸䈛䉖㔚ᭂ䈱㆑䈇䈏ᓸ☸ሶ䈱ᵹ䉏෸䈶㓸䈛䉖䈮෸䈿䈜 0 20 40 60 80 100 5 6 7 8 9 10 Applied Voltage(- kV) Collection Efficiency(%) 0 10 20 30 40 50 60 70 80 Current(µA)

E.F. Elec trode A.F.P. Elec trode E.F. Elec trode C urrent A.F.P. Elec trode C urrent

Fig.6 Collection efficiency vs. applied voltage. R.H., 60%; T, 32͠ 50 60 70 80 90 100 0 10 20 30 40 50 60 Operating Time(min) Collection efficiency(%)

E.F. Elec trode (- 9kV) A.F.P. Elec trode(- 9kV)

Fig.7 Time-lapse change of collection efficiency. R.H., 60%; T, 32͠.

ᓇ㗀䉕⺞䈼䈢㪅 㓸䈛䉖₸䈲᳇ᵹㅦᐲ 㪈㫄㪆㫊㪃 㔚᳇㓸䈛䉖ⵝ⟎ౝ 䈱ᵹ䉏䈱นⷞൻ䈲᷹ⷰⵝ⟎䈱೙⚂䈱䈢䉄 㪇㪅㪈㫄㪆㫊 䈪ታ㛎䉕ⴕ䈭 䈦䈢㪅 ශട㔚࿶㪄㪏㫂㪭 䈱႐ว㪃 㓸䈛䉖₸䈲㕒㔚ᬀᲫ㔚ᭂ䈏⚂ 㪐㪎㩼㪃㩷 䉝䊦䊚䊆䉡䊛ᐔ᧼㔚ᭂ䈲⚂ 㪏㪉㩼㩷 䈪䈅䈦䈢㪅㩷 䉺䊋䉮ᾍ䈱☸ሶ 䈮ኻ䈚䈩䉅㓸䈛䉖₸䈲䉝䊦䊚䊆䉡䊛ᐔ᧼㔚ᭂ䈫Ყ䈼㪃 㕒㔚ᬀᲫ 㔚ᭂ䈱ᣇ䈏㜞䈇㓸䈛䉖₸䉕␜䈚䈢㪅 㪝㫀㪾㪅㪐 䈲䉺䊋䉮䈱ᾍ䉕㔚᳇㓸 䈛䉖ⵝ⟎ౝ䈮ዉ౉䈚㪃 䊧䊷䉱䊷䈮䉋䉎ᢔੂశ䈪㜞㔚࿶㔚ᭂ䈫㓸 䈛䉖㔚ᭂ䈱㑆䈱ᾍ☸ሶ䉕นⷞൻ䈚䈩㪃 㔚᳇㓸䈛䉖䈱᭽ሶ䉕ⷰኤ 䈚䈢⚿ᨐ䈪䈅䉎㪅㩷 㕒㔚ᬀᲫ㔚ᭂ䉕↪䈇䈢႐ว䋨㪝㫀㪾㪅㪐䋨㪸䋩䋩㪃 ᾍ☸ ሶ䈲ⵝ⟎ౝ䈮ዉ౉䈘䉏䉎䈫⋥䈤䈮㓸䈛䉖㔚ᭂ਄䈮㓸䈛䉖䈘䉏㪃 㓸䈛䉖㔚ᭂ䈱ਛᔃઃㄭ䉋䉍ਅᵹ䈮䈲ᾍ☸ሶ䉕⏕⹺䈜䉎䈖䈫䈲䈪 䈐䈭䈎䈦䈢㪅 ৻ᣇ㪃 䉝䊦䊚䊆䉡䊛ᐔ᧼㔚ᭂ䈱႐ว䋨㪝㫀㪾㪅㪐䋨㪹䋩䋩㪃 㓸 䈛䉖ⵝ⟎䈱಴ญઃㄭ䈮䉁䈪ᾍ☸ሶ䉕⏕⹺䈜䉎䈖䈫䈏䈪䈐䈢㪅 㕒 㔚ᬀᲫ㔚ᭂ䈱႐ว䈫䉝䊦䊚䊆䉡䊛ᐔ᧼㔚ᭂ䈱႐ว䈪㪃 㔚⇇䈲䈾 䈿ห䈛䈪䈅䉎䈖䈫䈎䉌㪃 㓸䈛䉖ⵝ⟎౉䉍ญઃㄭ䈱᜼േ䈲ਔ⠪䈫䉅 䈮㪃 䈾䈿ห䈛䈪䈅䉎䈫⠨䈋䉌䉏䉎㪅 ᓥ䈦䈩㪃 䉝䊦䊚䊆䉡䊛ᐔ᧼㔚 ᭂ䈮䈍䈇䈩ਛᔃઃㄭ䉋䉍ਅᵹ䈮ⷰኤ䈘䉏䈢ᾍ☸ሶ䈲㪃 㓸䈛䉖㔚 ᭂ䉋䉍ౣ㘧ᢔ䈚䈢☸ሶ㪃㩷 䈅䉎䈇䈲䉟䉥䊮㘑䈱ੂᵹ䈪㔚ᭂ㑆䈮ᚯ 䈘䉏䈢☸ሶ䈪䈅䉎䈫⠨䈋䉌䉏䉎㪅 䈖䈱⚿ᨐ䈎䉌㪃 㕒㔚ᬀᲫ㔚ᭂ䉕 ↪䈇䉎䈫㪃㩷 㓸䈛䉖㔚ᭂ䈎䉌䈱ౣ㘧ᢔ䈏ᛥ೙䈘䉏䉎䈫䈇䈉䈖䈫䈏䉒 䈎䉎㪅 ౣ㘧ᢔ䈱ᛥ೙䈮䈲㪃 ᰴ䈱ੑ䈧䈱ⷐ࿃䈏ነਈ䈚䈩䈇䉎䈫⠨ 䈋䉌䉏䉎㪅 ৻䈧䈲䉫䊧䊷䊂䉞䉣䊮䊃ജ䈪㪃 䉅䈉৻䈧䈲䉟䉥䊮㘑䈪 䈅䉎㪅 䉟䉥䊮㘑䈱ᓇ㗀䈮㑐䈚䈩䈲䋬ᰴ䈱䉋䈉䈮⠨䈋䉌䉏䉎㪅 䉟䉥䊮 (a) Electrostatic flocking fibers visualized

by combination of light field and fluorescent imaging technique

(b) Fluorescent image of the tip of the electrostatic flocking fiber

Agglomerated particles

50um

(c) Fluorescent image of aluminum flat plate electrode

Fig.8 Microscopic images of fluorescentparticles agglomerated on the collecting electrode.

50um

50um

(b) Aluminum flat plate electrode

Smoke particle

Collecting electrode

Air Flow

H.V. electrode

Air Flow

Collecting electrode

Smoke particle

H.V. electrode

(a) Electrostatic flocking electrode

Fig. 9 Photographs of tobacco smoke particles trajectories in ESP at dc -8kV.

㘑䈲㜞㔚࿶㔚ᭂ䈎䉌㓸䈛䉖㔚ᭂ䈱ᣇะ䈮⊒↢䈚㪃 ☸ሶ䉕㓸䈛䉖 㔚ᭂ䈻ャㅍ䈜䉎㪅 䈚䈎䈚㪃 㓸䈛䉖㔚ᭂ䈻೔㆐䈚䈢䉟䉥䊮㘑䈲㪃 㓸䈛䉖㔚ᭂ䈫ⴣ⓭䈚਄ᣇ䈻็䈐਄䈏䉎䋨䊋䉾䉪䊪䊷䊄䋩㪅㩷 䋨෩ኒ䈮 䈲㪃 㓸䈛䉖㔚ᭂ䈻೔㆐䈚䈢ᤨὐ䈪䈾䈫䉖䈬䈱䉟䉥䊮䈲ᄬ䉒䉏䉎 䈱䈪㪃 ็䈐਄䈏䉎ᵹ䉏䈲䉟䉥䊮㘑䈪䈲䈭䈇㪅䋩䈖䈱็䈐਄䈏䉍䈮䉋 䈦䈩㪃 㓸䈛䉖䈘䉏䉎⋥೨䈱☸ሶ䈏Ꮞ䈐਄䈕䉌䉏㪃 䉁䈢㓸䈛䉖㔚ᭂ ⴫㕙䈮㓸䈛䉖䈘䉏䈢☸ሶ䈱৻ㇱ䈏ౣ㘧ᢔ䈜䉎㪅㩷 䈖䈱ᤨ㪃㩷 㓸䈛䉖 㔚ᭂ䈮㕒㔚ᬀᲫ䉕ᣉ䈜䈫㪃 䈠䈱㕒㔚ᬀᲫ䈮䉋䉎៺ᡂᛶ᛫䈮䉋䈦 䈩䉟䉥䊮㘑䈱็䈐਄䈏䉍䈏ᛥ೙䈘䉏䉎䈫ᕁ䉒䉏䉎㪅㩷 ታ㓙䈮䉟䉥䊮 㘑䈱᭽ሶ䉕ⷰኤ䈜䉎䈫㪃㩷 㕒㔚ᬀᲫ㔚ᭂ䈱႐ว䈲䉝䊦䊚䊆䉡䊛ᐔ ᧼㔚ᭂ䈱႐ว䈮Ყ䈼䈩䊋䉾䉪䊪䊷䊄䈏㕖Ᏹ䈮ዊ䈘䈒䈭䈦䈩䈇䈢㪅 䈖䈱䉟䉥䊮㘑䈱็䈐਄䈏䉍䈱ᛥ೙䉅ౣ㘧ᢔ䉕ᛥ䈋䉎䈖䈫䈮ነਈ䈚 䈩䈇䉎䈫⠨䈋䉌䉏䉎㪅 䉁䈢㪃 䈖䈱ὐ䈮㑐䈚䈩䈲੹ᓟ䈱⎇ⓥ⺖㗴䈪 䈅䉎㪅㩷  㕒㔚ᬀᲫ㔚ᭂߩ㓸ߓࠎ෸߮ౣ㘧ᢔᛥ೙ࡕ࠺࡞ 㕒㔚ᬀᲫ㔚ᭂ䈱ᓸ☸ሶ㓸䈛䉖෸䈶ౣ㘧ᢔᛥ೙䊝䊂䊦䉕 㪝㫀㪾㪅㪈㪇 䈮␜䈜㪅 䈖䈖䈪㪃㩷 㪝㪈 䈲䉪䊷䊨䊮ജ㪃㩷 㪝㪉 䈲䉫䊧䊷䊂䉞䉣䊮䊃 ജ䈪㱍䈲⺃ዉಽᭂ㩿㪚㪆䋛㪀㪃 㱡䈲‛૕䈱ኈⓍ㩿ণ㪀䉕␜䈜㪅 ⩄㔚䈘 䉏䈢☸ሶ䈲㪃 䉪䊷䊨䊮ജ䈮䉋䈦䈩㓸䈛䉖㔚ᭂ䈻⒖േ䈜䉎㪅 㓸䈛 䉖㔚ᭂ⴫㕙䈲㪃 㕒㔚ᬀᲫ䈘䉏䈩䈍䉍㪃 䈠䈱㕒㔚ᬀᲫవ┵䈮㔚⇇ 䈏㓸ਛ䈜䉎䈢䉄㪃㩷 ☸ሶ䈲వ┵䈮䉋䉍ᄙ䈒㓸䈛䉖䈘䉏䉎㪅㩷 䉁䈢㪃㩷 㕒 㔚ᬀᲫవ┵䈱ਇᐔ╬㔚⇇䈲㪃 ☸ሶ䈮ኻ䈚䈩䉫䊧䊷䊂䉞䉣䊮䊃ജ 䉕䈍䉋䈿䈚㪃 䈠䈱䉫䊧䊷䊂䉞䉣䊮䊃ജ䈏వ┵䈻䈱㓸䈛䉖䈅䉎䈇䈲 ౣ㘧ᢔ䈱ᛥ೙䈮ነਈ䈜䉎䈫⠨䈋䉎㪅

Fig.10 Model of precipitation and reentrainment suppression on an electrostatic flocking electrode.

 ߹ߣ߼ 㔚᳇㓸䈛䉖ⵝ⟎䈮䈍䈇䈩㪃 䉰䊑䊚䉪䊨䊮☸ሶ䈮ኻ䈜䉎㓸䈛䉖 ₸䈱ะ਄䈲㊀ᄢ䈭໧㗴䈪䈅䉎㪅 ᧄ⎇ⓥ䈪䈲䈖䈱໧㗴ὐ䉕స᦯ 䈜䉎䈢䉄㪃 㓸䈛䉖㔚ᭂ਄䈮䊌䉟䊦䉕㕒㔚ᬀᲫ䈜䉎䈖䈫䈪㓸䈛䉖 㔚ᭂ䈱⴫㕙Ⓧ䉕Ⴧട䈘䈞㪃 䉫䊧䊷䊂䉞䉣䊮䊃ജ䈮䉋䉍ౣ㘧ᢔ䉕㒐 ᱛ䈜䉎䈖䈫䈏น⢻䈪䈅䉎䈎ᬌ⸛䉕ⴕ䈦䈢㪅 ᧄ⎇ⓥ䈪ᓧ䉌䉏䈢ਥ 䈢䉎⍮⷗䉕એਅ䈮䉁䈫䉄䉎㪅㩷 㩿㪈㪀㩷 㪇㪅㪊 ঙ䈎䉌 㪇㪅㪌 ঙ䉁䈪䈱䉰䊑䊚䉪䊨䊮☸ሶ䈮ኻ䈜䉎㓸䈛䉖 ₸䈲㕒㔚ᬀᲫ㔚ᭂ䈏 㪐㪋㩼㪃 䉝䊦䊚䊆䉡䊛ᐔ᧼㔚ᭂ䈲 㪏㪐㩼 䈪䈅䉍㪃 㕒㔚ᬀᲫ䈱ᣇ䈏 㪌㩼એ਄㜞䈒䈭䈦䈢㪅 㕒㔚ᬀᲫ㔚 ᭂ䉕↪䈇䉎䈖䈫䈪㪃 ᐔ᧼㔚ᭂ䉋䉍ᓸ☸ሶ䈮ኻ䈚㪃 㜞䈇㓸䈛 䉖ᕈ⢻䈱㆐ᚑ䈏น⢻䈪䈅䈦䈢㪅 㩿㪉㪀 㕒㔚ᬀᲫ䈮↪䈇䈢䊅䉟䊨䊮䊌䉟䊦䈱వ┵ㇱ䈮䈍䈇䈩ᓸ☸ ሶ䈏☻ᄢൻ䈜䉎䈖䈫䈏᣿䉌䈎䈮䈭䈦䈢㪅 㩷 ᧄ⎇ⓥ䈱৻ㇱ䈲㩿⽷㪀༛ᾍ⑼ቇ⎇ⓥ⽷࿅䈭䉌䈶䈮ᢥㇱ⑼ቇ⋭ 㪉㪈 ਎♿ 㪚㪦㪜 䍀ᧂ᧪␠ળ䈱↢ᘒᕡᏱᕈᎿቇ䍁䈱ഥᚑ䈮䉋䈦䈩ⴕ 䉒䉏䉁䈚䈢㪅 䈖䈖䈮⻢ᗧ䉕⴫䈚䉁䈜㪅 䉁䈢㪃 䈖䈱⎇ⓥ䈮ኻ䈚䈩䈗 ഥജ䉕㗂䈇䈢 㪣㪞 㪜㫃㪼㪺㫋㫉㫆㫅㫀㪺㫊 㪛㫀㪾㫀㫋㪸㫃㩷 㪘㫇㫇㫃㫀㪸㫅㪺㪼㩷 㪚㫆㫄㫇㪸㫅㫐 䈱⎇ ⓥ䉫䊦䊷䊒䈮ᗵ⻢⥌䈚䉁䈜㪅

㩷

㪈㪀 L. Morawska, V. Agranovski, Z. Ristovski and M. Jamriska: Indoor Air, 12(2002)129

㪉㪀 Y. Zhuang, Y. J. Kim, T. G. Lee, P. Biswas: J. Electrostat., 48(2000) 245

㪊㪀 A. Mizuno: IEEE Trans. On Ind., 7(2000)615

㪋㪀 T. Watanabe, F. Tochikubo, Y. Koizumi, T. Tsuchida, J. Hautanen, E. I. Kauppinen: J. Electrostat., 34(1995)367 㪌㪀 Y. Koizum, M. Kawamura, F.Tochikubo, T. Watanabe: J.

Electrostat., 48(2000)93

㪍㪀 A. Laitinen, J. Keskinen, E. Kauppinen, J. Jokiniemi, K. Lethinen: J. Electrostat., 38(1996)303 㪎㪀 ℰᘮⷩ┨ᦺ㪃 દ⮮ᵏ㇢㪃㩷 㜞ᯅᱞ↵㪃㩷 ᣂ⽴๺ᾖ㪃 Ꮉ਄৻⟤㪑㩷 㔚᳇⸳஻ቇળ⹹㪃 㪈㪈㪍㩿㪈㪐㪐㪍㪀㪈㪉㪏㪏 㪏㪀 ℰᘮⷩ┨ᦺ㪃 ␹ઍᷤ㪃 Ꮉ↰ศᒄ㪃 ᳯේ↱ᵏ㪃 દ⮮ᵏ㇢㪃 㜞 ᯅᱞ↵㪃 Ꮉ਄৻⟤㪃 㜞᧻ᱞผ㪑 㔚᳇ቇળ⺰ᢥ⹹ 㪘㪃 㪈㪈㪐㩿㪈㪐㪐㪐㪀㪉㪍㪎㩷 㪐㪀㩷 㕒㔚᳇ቇળ㪑㩷 㕒㔚᳇䊊䊮䊄䊑䉾䉪㪃㩷㫇 㪉㪌㪋㪃㩷 䉥䊷䊛␠㩿㪈㪐㪏㪐㪀㩷 -Ion q E 1 Charge q Charge q F1 F2 F Electrostatic flocking fiber -Ion Particle F=F1+F2

F1=qE (Coulomb force)