저온 플라즈마 및 암모니아 선택적 환원공정을 활용한 저온 탈질공정의 특성(I)

이재옥; 송영훈; Jae-Ok Lee; Young-Hoon Song

Journal of the Korean Industrial and Engineering Chemistry, Vol.17, No.4, 409-413, August, 2006

Export Citation

저온 플라즈마 및 암모니아 선택적 환원공정을 활용한 저온 탈질공정의 특성(I)

Characteristics of Low Temperature De-NOx Process with Non-thermal Plasma and NH3 Selective Catalytic Reduction (I)

이재옥^†, 송영훈

한국기계연구원 환경ㆍ에너지기계연구본부

Jae-Ok Lee^†, and Young-Hoon Song

Environment and Energy Research Division, Korea Institute of Machinery and Materials, 171 Jang-dong Yusung, Daejeon, Korea

E-mail:

초록

150～200 ℃의 저온조건에 적용하기 위한 탈질공정으로서 저온 플라즈마 및 암모니아 SCR 공정을 복합시킨 탈질공정에 대한 실험적인 연구가 수행되었다. 실험결과 저온조건에서 일반적인 SCR 반응에 비해 매우 빠른 반응속도를 갖는 fast SCR 반응의 가능성을 확인할 수 있었으며, 효과적인 fast SCR 반응을 위해서는 SCR 반응기에 투입되는 NO2/NOx의 비가 0.3～0.5 범위에 있음을 알 수 있었다. 본 연구에서는 저온운전에 따른 암모늄염의 발생문제, 배기가스에 포함되어 있는 탄화수소가 공정에 미치는 영향, 유사한 공정과의 운전전력 비교 등 해당기술을 활용하기 위해 기본적으로 필요한 자료를 제공하고 있다.

An experimental study on a combined De-NOx process of non-thermal plasma and NH3 SCR, which can be operated under low temperature conditions, i.e. 150～200 ℃, has been conducted. The test results confirmed feasibility of fast SCR reaction, which shows faster reactivity compared with typical SCR reaction under the low temperature conditions. The test showed that pre-oxidation step to convert NO to NO2 is necessary for the fast SCR reaction, and the appropriate ratio of NO2/NOx ranges from 0.3 to 0.5. Ammonium salts produced under low temperature conditions, effects of hydrocarbons on the combined process, the operation power of the process are discussed in the present study.

Keywords:non-thermal plasma;NH3 SCR;fast SCR reaction;ammonium nitrate

[References]

Bosch H, Janssen F, Catal. Today, 2, 369 (1988)
Hammer T, Kappes T, Baldauf M, Catal. Today, 89(1-2), 5 (2004)
Koebel M, Madia G, Elsener M, Catal. Today, 73(3-4), 239 (2002)
Koebel M, Elsener M, Madia G, Ind. Eng. Chem. Res., 40(1), 52 (2001)
Kim YH, Hong SH, Cha MS, Song YH, Kim SJ, J. Adv. Oxid. Technol., 6, 17 (2003)
Kim YH, Kang WS, Park JM, Hong SH, Song YH, Kim SJ, IEEE Trans. Plasma Sci., 32(1), 18 (2004)
Mok YS, Koh DJ, Shin DN, Kim KT, Fuel Process. Technol., 86, 303 (2004)
Filimonova EA, Kim YH, Hong SH, Song YH, J. Phys. D-Appl. Phys., 35, 2795 (2002)
Penetrante BM, Plasma-Assisted Catalytic Reduction of NOx, SAE982508 (1998)
Song YH, Shin WH, Kim SJ, Park MS, Jang GH, J. Adv. Oxid. Technol., 4(3), 265 (1999)
Rosocha LA, Korzekwa RA, J. Adv. Oxid. Technol., 4, 247 (1999)
Rappe KG, Hoard JW, Aardahl CL, Park PW, Peden CHF, Tran DN, Catal. Today, 89, 143 (2004)

[Referenced By]

[1] Bosch H, Janssen F, Catal. Today, 2, 369 (1988)

[2] Hammer T, Kappes T, Baldauf M, Catal. Today, 89(1-2), 5 (2004)

[3] Koebel M, Madia G, Elsener M, Catal. Today, 73(3-4), 239 (2002)

[4] Koebel M, Elsener M, Madia G, Ind. Eng. Chem. Res., 40(1), 52 (2001)

[5] Kim YH, Hong SH, Cha MS, Song YH, Kim SJ, J. Adv. Oxid. Technol., 6, 17 (2003)

[6] Kim YH, Kang WS, Park JM, Hong SH, Song YH, Kim SJ, IEEE Trans. Plasma Sci., 32(1), 18 (2004)

[7] Mok YS, Koh DJ, Shin DN, Kim KT, Fuel Process. Technol., 86, 303 (2004)

[8] Filimonova EA, Kim YH, Hong SH, Song YH, J. Phys. D-Appl. Phys., 35, 2795 (2002)

[9] Penetrante BM, Plasma-Assisted Catalytic Reduction of NOx, SAE982508 (1998)

[10] Song YH, Shin WH, Kim SJ, Park MS, Jang GH, J. Adv. Oxid. Technol., 4(3), 265 (1999)

[11] Rosocha LA, Korzekwa RA, J. Adv. Oxid. Technol., 4, 247 (1999)

[12] Rappe KG, Hoard JW, Aardahl CL, Park PW, Peden CHF, Tran DN, Catal. Today, 89, 143 (2004)