Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지
DOI QR코드

DOI QR Code

A Study on Synthetic Method and Material Characteristics of Magnesium Ammine Chloride as Ammonia Transport Materials for Solid SCR

Solid SCR용 암모니아 저장물질인 Magnesium Ammine Chloride의 합성방법 및 물질특성 연구

  • Received : 2015.02.15
  • Accepted : 2015.09.09
  • Published : 2015.11.01
Download PDF
⟨ Previous Next ⟩

Abstract

Among various ammonium salts and metal ammine chlorides used as solid materials for the sources of ammonia with solid SCR for lean NOx reduction, magnesium ammine chloride was taken up for study in this paper because of its ease of handling and safety. Lab-scale synthetic method of magnesium ammine chloride were studied for different durations, temperatures, and pressures with proper ammonia gas charged, as a respect of ammonia gas adsorption rate(%). To understand material characteristics for lab-made magnesium ammine chloride, DA, IC, FT-IR, XRD and SDT analyses were performed using the published data available in literature. From the analytical results, the water content in the lab-made magnesium ammine chloride can be determined. A new test procedure for water removal was proposed, by which the adsorption rate of lab-made sample was found to be approximately 100%.

질소산화물 저감에 사용하는 solid SCR용 고체상 암모늄 저장물질의 하나인 magnesium ammine chloride에 대한 실험실 규모에서의 제조방법과 제조한 물질의 분석연구를 수행하였다. 기저물질인 염화마그네슘에 암모니아 가스를 흡착하기 위한 실험조건의 도출을 위하여, Van't Hoff Plot으로 평형압 선도를 계산하였고, 간이반응기를 제작한 후, magnesium ammine chloride를 제조하였다. DA, IC, FT-IR, XRD, SDT 등으로 제조한 시료의 성분을 분석하였고, 제조한 시료에 수분이 존재한다는 것을 알 수 있었다. 암모니아 가스 흡착률을 증대하기 위하여 수분 제거에 적절한 새로운 실험방법을 제안하였고, 제안한 방법을 적용한 결과, 암모니아 가스의 흡착률이 대략 100%에 도달하였다.

Keywords

References

  1. Geering, H. C., Elsenser, M. and Schear, C., 2003, "Control of a Urea SCR Catalytic Converter System for a Mobile Heavy Duty Diesel Engine," SAE Paper 2003-01-0776.
  2. Jeong, S., Lee, C., Lee, S., Kim, W. and Lee, C., 2007, "The Effect of Ammonia and Flow Distribution on DeNox Performance of Urea SCR Catalyst in a Heavy Duty Diesel Engine," KSAE Spring Conference Proceedings, pp. 229-235.
  3. Gerhart, C., Krimmer, Hammer, H. B., Schulz, B., Krocher, O., Peitz, D., Sattelmayer, T., Toshev, P., Wachtmeister, G., Heubuch, A. and Jacob, E., 2012, "Development of a 3rd Generation SCR NH3-Direct Dosing System for Highly Efficient DeNOx," SAE paper 2012-01-1078.
  4. Tatur, M., Tomazic, D., Lacin, F., Sullivan, H., Kotrba, A., 2009, "Solid SCR Demonstration Truck Application," Presentation Materials, DEER.
  5. Fulks, G., Fisher, G. B., Rahmoeller, K., Wu, M. and D'Herde, E., 2009, "A Review of Solid Materials as Alternative Ammonia Sources for Lean NOx Reduction with SCR," SAE Paper 2009-01-0907.
  6. Dokkedal, T., Zink, R., Quaade, U., Hviid, C., Kehlet, J. and Johannessen, T., 2006, "A High-Density Ammonia Storage/Delivery System Based on $Mg(NH_3)_6Cl_2$ for SCR-DeNOx in Vehicles," Chemical Engineering Science, 61, pp. 2618-2625. https://doi.org/10.1016/j.ces.2005.11.038
  7. Sorensen, R., Hummelshoj, J., Klerke, A., Reves, J., Vegge, T., Norskov, J. and Christensen, C., 2008, "Indirect, Reversible High-Density Hydrogen Storage in Compact Metal Ammine Salts," Journal of the American Chemical Society, Vol. 130, pp. 8660-8668. https://doi.org/10.1021/ja076762c
  8. Owen, M., Royse, M., Edwards, P. and David, I. F., 2013, "The Structure and Desorption Properties of the Ammines of the Group II Halides," ELSEVIER, Chemical Physics, Vol. 427, pp. 38-43. https://doi.org/10.1016/j.chemphys.2013.05.006
  9. Kim, H., Yoon, C., Lee, J. and Lee, H., 2014, "A Study on the Solid Ammonium SCR System for Control of Diesel NOx Emissions," SAE Paper 2014-01-1535
  10. Lee, H., Yoon, C. S. and Kim, H., 2013, "A Study on Reaction Rate of Solid SCR for NOx Reduction of Exhaust Emissions in Diesel Engine," Transaction of KSAE, Vol. 21, No. 6, pp. 183-194. https://doi.org/10.7467/KSAE.2013.21.6.183
  11. Shin, J. K., Lee, H., Yoon, C. S. and Kim, H., 2014, "Analytical Study on Re-solidification Materials (Ammonium Carbonate Intermediates) for NOx Reduction of Exhaust Emissions in Diesel Engine with SCR," Transaction of KSAE, Vol. 22, No. 4, pp. 152-159.
  12. Yoon, C. S., Shin, J. K., Lee. H. and Kim, H., 2014, "A Study on Physical Chemistry of Solid Ammonium Materials for NOx Reduction of Diesel Engine Emissions", 2014 DOE CLEERS Workshop, University of Michigan, Dearborn, MI, USA. (http://cleers.org/workshop2014/)
  13. Vegge, T., Sorensen, R., Klerke, A., Hummelshoj, J., Johannessen, T., Norskov, J. and Christensen, C., 2008, "Indirect Hydrogen Storage in Metal Ammines, Part 4: Chemically Bound Hydrogen Storage," in Solid-State Hydrogen Storage: Materials and Chemistry, ed. by G. Walker, Woodhead Publishing Limited.