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Korean Chemical Engineering Research

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(1)Korean Chem. Eng. Res., Vol. 43, No. 1, February, 2005, pp. 129-135. Ks WÇÓ (` £§ ósLà ´ Z . ‹|/ ‹/ ‹›k. †. ãò¬H/ dHàHê ãò‰ [wQ ÁÉ2Ÿ 192-1 ¸ ö ³ [¤, 2004¸ 10ö 18³ >). 200-701 (2004 6 8. Efficient Desulfurization and Denitrification by Low Temperature Plasma Process Sung-Min Kim, Dong-Joo Kim and Kyo-Seon Kim† Department of Chemical Engineering, Kangwon National University, 192-1, Hyoza-2-dong, Chunchon, Kangwon-do 200-701, Korea (Received 8 June 2004; accepted 18 October 2004). ß È. á õCъ2 :) U³÷ öM à_Ñ ‹g SO Q SO /NO‹ fMÁSs ~‹Gk, ñ6 à_¡¤Í fMÁ SÑ Ùj2 s ªJk³ Æ GŒ. à_¡¤³Š ¯ÍMF, :) ?²¤, ÍQÑ, äí‹ ð, ‰(NO, SO , NH , H O and O )‹ s ~‹GŒ. ¯Íæ2 MF, :) ?²¤ 2 ÍQÑ« ÍWÑ ¶ 2 O Q H OÍ ƒÍöÑ ¶ SO ‹ fMÁSê SO /NO‹ ŸQ fMÁSo ÍGŒ. K, NH ‹ ð, ‰Í Í O¤´ SO /NO‹ fMÁSo ÍGŒ. « Y×J¯ ’êËo NO Q SO õ fMG, .K :) U³÷ öM à_ ßj ’ª‹ ,ð É0³ Äî ¤ ÀŒ. 2. 2. 3. 2. 2. 2. 2. 2. 2. 2. 3. x. 2. x. Abstract − In this study, we have analyzed the removal efficiencies of SO2 and SO2/NO by the pulsed corona discharge process and investigated the effects of several process variables on those removal efficiencies systematically. The effects of process variables such as applied voltage, pulse frequency, residence time, and initial concentrations of reactants (NO, SO2, NH3, H2O, and O2) on the removal efficiency were analyzed. As the applied voltage, the pulse frequency or the residence time increases or as the O2 or the H2O or the NH3 concentration in the inlet feed gas stream increases, the SO2 removal efficiencies and the simultaneous removal efficiencies of SO2/NO also increase. These experimental results can be used as a basis to design the pulsed corona discharge process to remove NOx and SOx. Key words: Desulfurization, Denitrification, Low Temperatune Plasma Process, Removal Efficiency. 1.. C «. s ³kE õÍ)Ñ ¯Wê 4zÍ) Ú 0dís fMG2 D¬« M Ë´ §ª Îhъ äfG2 Í)‹ ÜÍÍ SO õ WÇGñ NO , VOC(volatile organic compound), CO Ùk³ e¬ öÑ !¶ G÷‹ Q)Êъ «Ë KgÍ)õ ŸQÑ s-O ¤ À2 á D¬‹ y® « 4(Ê ÀŒ[1-5]. « D¬‹ c® U8 s Ý

(2) , äDõ Dʋ MD4,DQ Ÿ³K Ž- ¶ gÆõ. ÄO ¤ À´ ðD ·ÉWÄ« kÎ IƒK ßYs äÊ Às O 4n¶ äD‹ gƉ kΠѐGŒ. K, 8_K ³÷Í ä D‹ ‚o òÑ U°  æ, « âщ Ñw( HÍ JÊ ~,fMщ ÁêJ«Œ. U¾, ¬äH ßjÍ ÍDG‚³ c³ õ  Í) s-D¬³ íè« lè¾ «P´(Ê ÀŒ[6-13]. Amirov Ù[14]o )T-Ë ³÷ äD ъ NO÷ SO f MÑ ¶Ë‹ s «·J/Y×Jk³ õgG2) OH, O , N ً ¶Ë« NO÷ SO fMÑ s Âj2 ak³ ÝÊG Œ. Park Ù[15]o ³÷ öM Q)Ês «ÄK NO fMъ SO ‹ s õgGk SO Í CO Q ç« ƒÍöÑ !¶ NO ‹. M Ž,hs y[k³ h äfÍ ¿j ãdæ

(3) Š h Æ« 21§D‹ M¬ ÊzÍÍj Æk³ ¡1íÊ ÀŒ. U¾ h Æ o Œñ Æ~tQ‹ õî «  h ÆÑŠ‹  ÿt« §ª  f0ŠÑ )[J¯ s k _‰Í æÉŒ. ³÷ öM à_ Ñ ‹K %z·%0 D¬o Eo õg íèDÑщ ‚gGÊ SO , NO ço ¬D1 í0s ŸQÑ s-O ¤ À2 ßY ŽÑ DÊ ñ6 ör‹ D¬J,  fJ, h 1‹ éfYs ÝUg k ¤ À 2 D¬³ ÍæÊ ÀŒ. ¬D y •æ2 1òs k«D .g Š2 ßDJ¯ óòъ 1í fMßj‹ íè Ú ’jÍ ®gæ 2) MÑ2 :) ³÷ öM à_s «ÄgŠ ¬D 1ís fMGD .K õgÍ lè¾ ,}æÊ ÀŒ. I5 ñ¶ K %z ·%0 àro ¬DF ÆQъ ñ¶ K öM. 2. 2. x. x. x. 2. 3. 2. 2. x. † To. whom correspondence should be addressed. E-mail: [email protected]. 2. 129. 2. x.

(4) 6 Æö6Ÿ?ö6/Ž. 130. fMÁS« ÍWs îûGŒ. Kimê Hong[16]o KM ߞ ³÷ öMs 0K NO Q SO ~gõ Y×Gk, KM ߞ, äW gÆ, õ s- ÆQ ¡dõ 0g NO Q SO Í ~gæÊ fMÁS« ÍWs ÝÊGŒ. DinelliQ Civitano[17]2 :) ³÷ъ õ á Í)³z NO Q SO ‹ ŸQ fMõ õgG k NO Q SO ‹ ðD ‰, NH ‹ ‰, äD Í)‹ 5‰, Hydrated lime Ù« NO Q SO ‹ fMÁSÑ s c2 ak³ ÝÊGŒ. Kim Ù[18, 19]o :) ³÷ öM à_s «ÄK NO fMъ ñ¶ K dH Ú ½É‹  ßs H1Rs ÄGñ õg GÊ ŸtHJ¯ ½É‹ U s ~‹GŒ. (b( :) ³÷ öMs «ÄK SO Ú NO fM õg2 Q« ¤}æÉk÷ ŸQ fMõ ÊsK ao í· à_¡¤‹ ¡d Í fMÁSÑ Âj2 s ªJk³ ~‹K õg2 4) £~ j :o =«Œ. á õgъ2 :) ³÷ öM äDõ «Ä K %z·%0Q à_¡¤ ¡dÑ !ñ %z·%0 U ê ŸQ fM õ ªJ¯ Y×s 0g ~‹GŒ. x. x. x. x. x. x. x. 3. x. x. x. x. x. 2.. x. .g äD •gÑ Electro-Chemical Gas Analyzer(Digitron, GreenLine MK II)s ’jGñ +_GŒ. ³÷ öM äDÑ Š @ ê ½É í0o •gÑ õ’ê ~‹D ½gÑ ÊÁS‹ 1õ ’jGñ fMGŒ. Y×o 5 Fъ }Gñ ›k, NO Ú SO fMQ à_¡ ¤‹ s <4ÝD .gŠ ,gÆQk³ ¯ÍMFo 50 kV, : ) c²¤2 200 Hz, ÍQÑo 7.2 sec, SO ðD ‰2 800 ppm, NO ðD ‰2 100 ppms ÄGŒ. ³÷ öM‹ =2 ä D³ ¯Íæ2 MF, äD =(Y1

(5) Q Ž«´‹ ) ), ÍQ Ñ Ú àD ÆQ(D 5‰, ¤~‹ ‰) ÙÑ ‹ÊKŒ[21]. á õgъ2 )T-Ë ³÷ öMs «ÄK NO , SO fM Y ×s .g ¯ÍMFs 20-50 kV³ ¡dQZŒ. äD‹ SO. ‰2 800-1,500 ppmk³, NO ‰2 100-300 ppmk³, NH ‰ 2 100-3,200 ppmk³ ¡dQZk ÍQÑo 2.94-7.2 sec³, : ) c²¤2 50-200 Hz³ ¡dQZŒ. HÇ Y× ’êËo 3¡ « ‹ Y× ¤} á +_K à‹ èjõ ÄGŒ. 2. 2. x. 2. 3. / . 3.. á õgъ :) ³÷ öM äDõ «ÄK %z·%0 õg õ .gŠ ÄK Y×ßj‹ í÷‰2 Fig. 1ê çŒ. Y×ßj2 äí‹ c½ Ú f´z, äD, Mtà Ú f´z -Ê Í ) +_z³ «P´† ÀŒ. NO, SO , NH , N ً D2 ÎÎ MFCõ «ÄGñ _

(6) àGŒ. NO Ú SO fM Y×Q H O ‹ s ÊsGD .g ³_

(7) ‹ H Oõ bubblerõ ÄGñ O DÑ ¯dQE äD ³ àGŒ. O DÑ ¯dê H O Í äD ³ àæD MÑ ŽG2 as ö(GD .g ùŽ s ÄGñ D‹ 5‰õ ³_Gj K(QZŒ. äD³ àæ2 NH Í äD ³ àæD MÑ Œñ DËê äG2 as ö (GD .gŠ NH àŽs Œñ D‹ àŽê ~-GŒ. NO Ú SO fMõ .g á õgъ ÄK :) ³÷ öM äD2 cylinder-wirek³Š Y1

(8)  o 5 cm«Ê L«2 38 cm« äD‹ é0o Pyrex«Œ. ³÷ è@ Mo äD yÑÑ ’jê )º¯-) Ž()  0.5 mm)«, [(o äD žÑ )º¯-) ak³ ’jGŒ. [(Mo ò0k³ L «2 30 cm«Œ[20]. äDÑ ³÷õ è@QÿD .g ÊMF è@D(Kh Switching )õ ÄGŒ. Y×ъ ³÷ è@ MÑ àæ2 MF‹ ¿DQ c²¤2 1Y³) é(Tektronix TDS 220)õ Ä Gñ +_GŒ. ³÷ öM á NO Ú SO ‹ ‰õ +_GD 2. 3. 2. 2. 2. 2. 2. 2. 2. 2. ûG Z +{. (< ? Ÿ {à SO C» ¯ÍMF‹  ъ äD³ ¯Íæ2 MF« SO fMÑ Âj2 s ðD SO ‰õ ¡dQÿ

(9) Š +_GŒ. äD³ ¯Íæ2 : ) c²¤Q Í QÑo ,g ÆQk³ GÊ, äD³ ¯Íæ2 MFs 20-50 kV³ ¡dQZk, äD³ àæ2 ðD SO. ‰Í 800, 1,200, 1,500 ppm³ A ÎÎъ‹ SO fM ÁSs + 3-1.. 2. 3-1-1. Fig. 2. 2. 2. 2. 2. 3. 3. 2. x. Fig. 1. Schematic of experimental set up.. Ÿ¤@¤ C43× C1ƒ 2005 2. x. Fig. 2. SO2 removal efficiencies for various initial SO2 concentrations as a function of applied voltage (pulse frequency=200 Hz, residence time=7.2 s)..

(10) I# ñ¶ K à_Ñ ‹K z Ú 0. _GŒ. äD³ ¯Íæ2 MF« ÍO¤´ MÉË« Í(2 èÑw(Í ÍGñ SO fM äÑ y®K l  ¶Ë(O, O , OH, OH )‹ @ ‰2 ÍG‚³ ¶Ëê‹ uñ dHä Ñ ‹K SO ‹ fMÁSo ÍGÊ ÀŒ. ¯ÍMF« 50 kV« Ê ðD SO ‰Í 1,500 ppm ³ A2 SO fMÁS« 10%«É  a« 800 ppm³ A2 SO fMÁS« 29%³ ÍGŒ. «2 ðD SO ‰Í s¤´ äD ъ SO fMÑ ®gæ2 Ñ w(Í ¬Jk³ Q« 1®Gj æ´ SO ‹ fMÁS« ÝG 2 ak³ ~‹êŒ. 3-1-2. ÍQы  Fig. 3o äD³ K½æ2 D‹ Í QÑ(D K

(11) ) ¡d Í SO fMÑ Âj2 s ÷Œ. äD³ ¯Íæ2 MF ê :) c²¤2 ,g ÆQk³ GÊ, ÍQÑo 2.94, 5.43, 7.2 sec³ ¡dQZs A ðD SO ‰ ¡dÑ !¶ SO fM ÁS s ÎÎ +_GŒ. Í QÑ« ÍWÑ !¶ äD Ñ   ê öM òÑ SO Í Ëå2 QÑ« L´(Ê

(12) 1Ú QÑ Ÿ8 dHäÑ ‹g SO Í Mh悳 SO ‹ fMÁS« Í GÊ ÀŒ. Fig. 2ъsF ðD SO ‰Í ÍO¤´ SO f Mõ .K ~É¢ èÑw(‹ Šo ÝG‚³ SO ‹ fMÁS « ÝGÊ ÀŒ. 3-1-3. :) c²¤‹  Fig. 4Ñ2 äD³ ¯Íæ2 MF‹ :) c²¤ ¡dÍ SO fMÑ Âj2 s ÷,Œ. äD³ ¯Íæ2 MFê SO ð D ‰2 ,g ÆQk³ GÊ, :) c²¤õ ¡dQZs A  ÍQÑ ¡dÑ !ñ SO fM U s <4ÝIŒ. ¯ÍMF‹ : ) c²¤Í ÍWÑ !¶ .QÑ¢ MÉÑ Íg(2 èÑ. 131. 2. 3. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. Fig. 4. SO2 removal efficiencies for various residence times as a function of pulse frequency ([SO2]0=800 ppm, applied voltage=50 kV).. 2. w(2 ÍGñ

(13) Qo Š‹ l  ¶Ë« @ æÊ l  ¶ Ëê‹ uñ dHäÑ ‹g

(14) Qo Š‹ SO Í fMæ‚ ³ SO fMÁS« ÍGÊ ÀŒ. Í QÑ« ÍWÑ

(15) H QÑ Ÿ8‹ dHäÑ ‹g fMæ2 SO ‹ Šo ÍK as Ý«Ê ÀŒ. 3-1-4. Í) Æ ‹  Fig. 52 D Æ  ¡dÍ SO fMÑ Âj2 s ÷Œ. äD³ ¯Íæ2 MF, :) c²¤, ðD SO ‰2 ,g ÆQ k³ GÊ, H OQ O ƒÍÑ !ñ SO fMÁSs Æ GŒ. D ‹ Í QÑ« 7.2 sec ³ A, SO Q N DOs àGñ ³ ÷ öMGs A2 SO fMÁS« 10%«(O SO +N +O ъ 2 SO fMÁS« 14%³, -Ê SO +N +O +H Oъ2 SO f MÁS« 29%³ ÍGŒ. «2 ¤~ê Í ƒÍöÑ !¶ NO Ú SO H äÑ îñG2 d  ¶(O, O , OH, OH ) ˋ @ 

(16) « ÍGñ dHäÑ ‹K SO H ‰Í ÍG ‚³ SO fMÁS« ÍGD A髌. äD³ SO +N O s Ä|s  Î, SO 2 ÊÑw(‹ MÉËê )[J £‘GM÷ (R 1) Œñ ~ÉË(N , O)ê‹ ä(R 2,3)Ñ ‹g SO÷ SO ³ M h悳 SO fM ÁS« 10% ÍK as Ý«Ê ÀŒ[16, 22]. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 3. 2. 2. 2. 2. 2 * 2. 2. 3. 2. Fig. 3. SO2 removal efficiencies for various initial SO2 concentrations as a function of residence time (pulse frequency=200 Hz, applied voltage=50 kV).. e+SO2→SO+O+e. (1). N2* +SO2→N2+SO+O SO2+O→SO3. (2) (3). 3-2.. (< ? Ÿ {à NO‹ SO £  C» ðD ‰‹  2. 3-2-1.. Korean Chem. Eng. Res., Vol. 43, No. 1, February, 2005.

(17) 6 Æö6Ÿ?ö6/Ž. 132. ÆQk³ GÊ, NO‹ ðD ‰õ 100, 200, 300 ppmk³, SO ‹ ðD ‰õ 0, 800, 1,200, 1,500 ppmk³ ÎÎ ¡dQZŒ. á õgъ ÄK à_ ¡¤ÑŠ +_ê NO ‰2 ðD NO. ‰Ñ 1% _‰³ ÷

(18) Œ. «2 NO³z NO Í @ æÉKÉ OH÷ OH ¶Ëê‹ uñ äÑ ‹g ¬z~‹ NO « HNO ³ dê ak³ ¶êŒ. !¶Š á õgъ2 NO. ‰¡dOs à_ ¡¤¡dÑ !¶ ÷,Œ. ðD NO ‰Í 100 ppm¯  Î, NO‹ Š fMQÑ2 fMÁS« 68%³ +_æÉ k÷ SO õ 800 ppm « ƒÍ|s AÑ2 fMÁS« 89%³ u 21% ÍŒ. SO ƒÍÑ !ñ NO fM ÁS ÍÑ ¬K _eK èn o 4) äê àÍ ÇŒ. K ÍD k³ á õ gъsF H OQ ê

(19) ‹ O (10%)õ SO , NOQ Wÿ ³÷ öM äDÑ àK  Î, Œ{ê ço äÑ ‹g NO fM ÁS« ÍO ¤ Àk÷ ݌ áJ¯ fM èn ä« ® gêŒ[7]. 2. 2. 2. 2. 2. 3. 2. 2. 2. 2. 2. 2NO+O2→2NO2 NO2+SO2+H2O→H2SO4+NO SO ‹ ðD ‰Í 1,200, 1,500 ppm³ A NO‹ fMÁSo NO Š fMQ݌2 ÍG(O ðD SO ‰ ÍÑ !ñ NO f MÁSo Æ ÝG2 as Ý«Ê ÀŒ. «2 ðD SO ‰ Í ÍO¤´ NO fM O 4n¶ SO fMõ .K dHäÑ ‰

(20) Qo ¶« ÄÞD Aé« ’êJk³ NO fMõ . K Mt Ñw(‹ Š« ÝK a«Œ. ðD NO ‰Í ÍWÑ !¶ NO fMõ .K ~É¢ èÑw(‹ Šo ÝGñ NO f MÁS« ÝGÊ ÀŒ. 2. 2. 2. Fig. 5. SO2 removal efficiencies for various gas compositions as a function of residence time ([SO2]0=800 ppm, applied voltage=50 kV).. 2. Fig. 6. NO removal efficiencies for various initial NO concentrations as a function of initial SO2 concentration (applied voltage=50 kV, residence time=7.2 s).. o NOQ SO õ ŸQÑ àGs A SO ðD ‰ ¡ dQ ðD ‰ ¡dÍ NO fMÑ Âj2 s ÝñcÊ À Œ. äD³ ¯Íæ2 MF, :) c²¤, D‹ ÍQÑo ,g Fig. 6 NO. 2. Ÿ¤@¤ C43× C1ƒ 2005 2. 2. Fig. 7. SO2 removal efficiencies for various initial NO concentrations as a function of initial SO2 concentration (applied voltage= 50 kV, residence time=7.2 s)..

(21) I# ñ¶ K à_Ñ ‹K z Ú 0. Fig. 8. NO removal efficiencies for various initial NO concentrations as a function of applied voltage ([SO2]0=800 ppm, pulse frequency =200 Hz, residence time=7.2 s).. Fig. 7o Fig. 6ê ço à_ÆQъ NOQ SO õ ŸQÑ à Gs A NOQ SO ‹ ðD ‰ ¡dÍ SO fMÑ Âj2  s ÷Œ. ðD SO ‰Í 1,200, 1,500 ppm ³ A2 ðD NO. ‰Í 0-300 ppmb( ¡g‰ SO fMÁSÑ Ã s Ùj( :(O ðD SO ‰Í 800 ppmk³ WGJ I ‰³ A2 SO fMÁS« WGJ j ÷÷Ê ÀŒ. ðD NO Š« 100 ppmz  ÍWÑ !¶ Fig. 6ъQ ço «K³ SO fMõ .K . ~É¢ Ñw(‹ Šo ÝG‚³ SO fMÁS« ÝGÊ ÀŒ. ðD SO ‰Í ÍWÑ !¶ SO fMõ .g

(22) Qo Š‹ M tÑw(Í ®gös Ý«Ê ÀŒ. 3-2-2. ÍQы  Fig. 8Ñ2 äD³ K½æ2 D‹ ÍQÑ« NOQ SO ‹ ŸQ fMÑ Âj2 s ÷,Œ. äD³ ¯Íæ2 MF, : )c²¤, SO ðD ‰2 ,g ÆQk³ GÊ, NO‹ ðD ‰õ 100, 200, 300 ppmk³, äD³ K½æ2 D‹ ÍQÑs 2.947.2 sec³ ¡dQZŒ. Fig. 6ê 7ъsF NOOs Š fM|s A݌ NOQ SO õ ŸQ fM|s A NO fMÁS« ÍGÊ À Œ. D‹ ÍQÑ« ÍO¤´ äD ъ

(23) H QÑ Ÿ8 ‹ NO HäÑ ‹g NO fMÁS« ÍGÊ ÀŒ. ðD NO. ‰Í ÝWÑ !¶ NO fMõ .K ~É¢ èÑw(‹ Šo ÍG NO fMÁS« ÍK as Ý«Ê ÀŒ. 3-2-3. ¯ÍMF‹  Fig. 92 äD³ ¯Íæ2 MF« NOQ SO ‹ ŸQ fMÑ Âj2 s ÷Œ. äD³ ¯Íæ2 :) c²¤, D‹ Í QÑ, SO ðD ‰2 ,g ÆQk³ GÊ, äD³ ¯Í æ2 MFo 20-50 kV³, ðD NO ‰2 100, 200, 300 ppmk. 133. Fig. 9. NO removal efficiencies for various initial NO concentrations as a function of applied voltage ([SO2]0=800 ppm, pulse frequency =200 Hz, residence time=7.2 s).. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. Fig. 10. NO removal efficiencies for various initial NO concentrations as a function of pulse frequency ([SO2]0=800 ppm, applied Voltage=50 kV, residence time=7.2 s).. ³ ¡dQZŒ. Fig. 8ъsF NOOs Š fM|s A݌ NOQ SO õ ŸQ fM|s A NO fMÁS«

(24) j ÷÷ Ê ÀŒ. äD³ ¯Íæ2 MF« ÍWÑ !¶ äD  à 2. Korean Chem. Eng. Res., Vol. 43, No. 1, February, 2005.

(25) 6 Æö6Ÿ?ö6/Ž. 134. Fig. 11. NO removal efficiencies for various initial NH3 concentrations as a function of applied voltage (pulse frequency=200 Hz, residence time=7.2 s, [SO2]0=800 ppm, [NO]0=100 ppm).. æ2 Ñw(Í ÍGñ l  ¶Ë‹ @  ‰2 ÍG Ê NO fMõ .K dHäo }¶(‚³ NO fMÁS« Í GÊ ÀŒ. 3-2-4. :) c²¤‹  Fig. 10ъ2 äD³ ¯Íæ2 :) c²¤ ¡dÍ NO Ú SO ŸQ fMÑ Âj2 s ÝñgŒ. äD³ ¯Íæ2 MF, D ‹ Í QÑ, SO ðD ‰2 ,g ÆQk³ GÊ, äD³ ¯ Íæ2 :) c²¤2 50-200 Hz³, ðD NO‹ ‰2 100, 200, 300 ppmk³ ¡dQZŒ. :) c²¤Í ÍWÑ !¶ .QÑ¢ àMt« ÍGñ MÉË« Í(2 èÑw(Í ÍG‚³ NO fMÁS« ÍGÊ ÀŒ. 3-2-5. DHn4‹  Fig. 11ê 122 DHn4 ƒÍÑ !ñ NOQ SO ‹ fMU s ÎÎ ÷Œ. äD³ ¯Íæ2 :) c²¤, D‹ Í QÑ, SO ðD ‰, NO ðD ‰2 ,g ÆQk³ GÊ, äD³ ¯ Íæ2 MFs 20-50 kV³, äD³ àæ2 ðD NH ‹ ‰2 0-2,400 ppmk³ ¡dQZŒ. ¯ÍMF« 50 kV ³ A, Fig. 11ъ äD³ NH Í àæ( :s A2 NO‹ fMÁSo 89%«É a« NH Í 2,400 ppmk³ àGs A2 NO‹ fMÁS« 99.8%³ ÍGÊ Fig. 12ъ NH õ àG( :s A2 SO ‹ fMÁSo 25%«É2) NH õ 2,400 ppmk³ àWÑ !¶ SO ‹ fMÁSo 71%³ ÍGŒ. NH õ ƒÍWÑ !¶ NH Í SO Q uíj äGñ Œ

(26) ‹ DH((NH ) SO Ù)s @  GÊ «Rj @ ê zDH‹ ,

(27) Ñ NOÍ NH Q Wÿ ô äs ³kÿD AéÑ NO Ú SO ‹ fMÁS« ¿j ÍG2 ak³ ~‹êŒ. 2. 2. 2. 2. 3. 3. 3. 3. 2. 3. 2. 3. 2. 3. 4 2. 4. 3. 2. Ÿ¤@¤ C43× C1ƒ 2005 2. Fig. 12. SO2 removal efficiencies for various initial NH3 concentrations as a function of applied voltage (pulse frequency=200 Hz, residence time=7.2 s, [SO2]0=800 ppm, [NO]0=100 ppm).. 4.. û «. á õgъ2 :) ³÷ öM äDõ «ÄGñ à_¡¤ ¡ dÍ SO ‹ fMQ NO Ú SO ŸQfMÑ Âj2 s Y×J k³ ~‹Gk, à_ ¡¤‹ s ~‹GD .g ðD NO Ú SO ‰, ¯ÍMF, D‹ ÍQÑ, :) c²¤, D‹ Æ , D Hn4‹ ‰ Ùs ¡dQZŒ. (1) äDÑ ¯Íæ2 MFê :) c²¤Í ÍO¤´, äD ³ K½æ2 D‹ ÍQÑ« ÍO¤´ SO fMÁSo Í Gk, ðD SO ‹ ‰Í ÝO¤´ äD³ àê SO ‹ fMÁSo ÍGŒ. (2) SO +N HYÍ)Ñ ¤~ê Í ƒÍöÑ !¶ SO ‹ f MÁSo ÍGŒ. (3) NO Ú SO ŸQ fMQ SO ‹ ƒÍ2 NO‹ fMÑ Ã  s cÉ(O NO‹ ƒÍ2 SO ‹ fMÑ Ã s c( :IŒ. (4) NO Ú SO ŸQ fMQ D‹ ÍQÑê ¯ÍMF, :) c²¤Í Í O¤´ NO Ú SO ‹ fMÁSo ÍGŒ. (5) NO Ú SO ŸQ fMQ ƒÍæ2 NH ‹ ‰Í ÍO¤´ NO Ú SO ‹ fMÁSo ¿j ÍG2), U¾ NH ‹ ‰Í 2,400 ppm³ A NO2 M‹ Œ fMæÉk SO ‰ Íß o f MÁSs á Y× p.ъ »ÉŒ. á õgъ Y×Jk³ »´, ’ê2 à_ ÆQ ¡dÑ !ñ ªJ¯ ÁS ~‹ê Yf NO Ú SO fM à_Ñ ¬dGñ JÄWÑ À´ ÁSJ¯ ÒM ÆQ Ú Mt Ýõ .K ßj íè Ñ y®K _Ýõ fàO ¤ Às ak³ D¬êŒ. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 2. 3. 2. 3. 2. x. x.

(28) [ ÷. I# ñ¶ K à_Ñ ‹K z Ú 0. « øéo 2002¸‰ KhH¬,”鐋 (òÑ ‹Gñ õgæ É5nŒ(KRF-2002-041-D00123).. ƒ+S 1. Clements, J. S., Mizuno, A., Wright, C. F. and Davis, R. H., “Combined Removal of SO2, NOX, and Fly Ash Simulated Flue Gas using Pulsed Streamer Corona,” IEEE Trans. Ind. Appl., 25(1), 63-69(1989). 2. Chang, J. S., Lawless, P. A. and Yamanoto, T., “Corona Discharge Process,” IEEE Trans. Ind. Appl., 19(6), 1152-1166(1991). 3. Marnix, A. T., van Hardeveld, R. and van Veldhuizen, E. M., “Reactions of NO in a Positive Streamer Corona Plasma,” Plasma Chem. Plasma Process., 17(4), 371-391(1997). 4. Masuda, S. and Hosokawa, S., “Control of NOx by Positive and Negative Pulsed Corona Discharge,” IEEE Trans. Ind. Appl., 29(4), 781-785(1993). 5. Nunez, C. M., Ramsey, G. H., Ponder, W. H., Abbott, James, H., and Hamel, L., “An Innvolative Control Technology for VOCs and Air Toxics,” AIR & WASTE, 43(2), 242-247(1993). 6. Tas, M. A., van Hardeveld, R. and van Veldhuisen, E. M., “Reactions of NO in a Positive Steamer Corona Plasma,” Plasma Chem. Plasma Process., 17(4), 371-391(1997). 7. van Veldhuisen, E. M., Zhou, L. M. and Rutgers, W. R., “Combined Effects of Pulsed Discharge Removal of NO, SO2 and NH3 from Flue Gas,” Plasma Chem. Plasma Process., 18(1), 91-111 (1998). 8. Yan, W., Wang, N., Zhu, Y. and Zhang, Y., “SO2 Removal from Industrial Flue Gases using Pulsed Corona Discharge,” J. Electrostatics, 44(1), 11-16(1998). 9. Oda, T., Yamashita, R., Takahashi, T. and Masuda, S., “Atmospheric Pressure Discharge Plasma Decomposition for Gaseous Air Contaminants-Trichlorotrifluoroethane and Trichloroethylene,” IEEE Trans. Ind. Appl., 32(2), 227-232(1996). 10. Urashima, K., Chang, J. S. and Ito, T., “Reduction of NOx from Combustion Flue Gases by Superimposed Barrier Discharge Plasma Reactors,” IEEE Trans. Ind. Appl., 33(4), 879-886(1997). 11. Mok, Y. S. and Nam, I. S., “Modeling of Pulsed Corona Dis-. 135. charge Process for the Removal of Nitric Oxide and Sulfur Dioxide,” Chem. Eng. J., 85(1), 87-97(2002). 12. Bromberg, L., Cohn, D. R., and Rabinovich, A., “Plasmatron Fuel Converter-Catalyst Systems for After Treatment of Diesel Vehicle Emissions,” International J. Vehicle Design, 25(4), 275-282(2001). 13. Nishikawa, K. and Nojima, H., “Air Purification Effect of Positively and Negatively Charged Ions Generated by Discharge Plasma at Atmospheric Pressure,” Jpn. J. Appl. Phys., 40(8), 835837(2001). 14. Amirov, R. H., Chae, J. O., Dessiaterik, Y. N., Filimonova, E. A. and Zhelezniak, M. B., “Removal of NOx and SO2 from Air Excited Streamer Corona: Experimental Results and Modeling,” Jpn. J. Appl. Phys.,, 37(6), 3521-3529(1998). 15. Park, J. Y., Kim, I. K., Koh, H. S., Kim, J. D., Lee, D. C. and Chang, J. S., “SO2 Effect on NOx Removal by Corona Discharge System,” Trans. KIEE., 47(11), 1979-1982(1998). 16. Kim, Y. H. and Hong, S. H., “NOx/SOx Decomposition of Flue Gases by AC Dielectric Barrier Corona Discharges,” Ungyong Mulli, 11(4), 393-400(1998). 17. Dinelli, G. L. and Civitano, M., “Industrial Experiments on Pulsed Corona Simultaneous Removal of NOx and SO2 from Flue Gas,” IEEE Trans. Ind. Appl., 26(4), 535-541(1990). 18. Kim, D. J., Choi, Y. R. and Kim, K. S., “Effects of Process Variables on NOx Conversion by Pulsed Corona Discharge Process,” Plasma Chem. Plasma Process., 21(4), 625-650(2001). 19. Kim, D. J. and Kim, K. S., “Analysis on Plasma Chemistry and Particle Growth in Corona Discharge Process for NOx Removal Using Discrete-Sectional Method,” IEEE Trans. Plasma Sci., 31(2), 227-235(2003). 20. Park, J. H, Kim, D. J. and Kim, K. S., “Analysis on NOx Conversion and Particle Characteristics in NOx Removal by Corona Discharge Process,” HWAHAK KONGHAK, 40(3), 351-356(2002). 21. Chang, J.-S., Pontiga, F., Atten, P. and Castellanos, A., “Hysterisis Effect of Corona Discharge in a Narrow Coaxial Wire-Pipe Discharge Tube with Gas Flow,” IEEE Trans. Ind. Appl., 32(6), 1250-1256(1996). 22. Chang, M. B., Balbach, J. H., Rood, M. J. and Kushner, M. J., “Removal of SO2 from Gas Streams Using a Dielectric Barrier Discharge and Combined Plasma Photolysis,” J. Appl. Phys., 69(8), 4409-4417(1991).. Korean Chem. Eng. Res., Vol. 43, No. 1, February, 2005.

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