NUMERICAL STUDY OF DESULPHURIZATION PROCESS BY THE AMMONIUM SEMI-DRY METHOD

  • I.A. Volchyn Coal Energy Technology Institute of National Academy of Sciences, Kyiv
  • A.M. Kolomiets Coal Energy Technology Institute of National Academy of Sciences, Kyiv
  • A.A. Yasinetskiy Coal Energy Technology Institute of National Academy of Sciences, Kyiv
Keywords: sulfur dioxide, ammonia, desulfurization, semi-dry method, drop, adduct

Abstract

The paper presents the results of numerical investigation of heat and mass transfer processes in the drip-type chemical reactor. The reactor is operated by the semi-dry method of desulphurization with ammonia technology. Water for irrigation gas and aqueous ammonia solution fed to the reactor either together or separately. Studies have shown that the efficiency of desulfurization process and the gas temperature at the outlet of the reactor depends on the method of supplying the liquid into the working zone, flow of water and additional air. It is found that a significant amount of ammonia from the solution passes into the gaseous medium due to desorption. Thus, the chemical binding of sulfur dioxide in the reactor is due to homogeneous reactions in a liquid medium and gas. Firstly, this reduces the formation of ammonium sulfite and ammonium sulfate in the liquid droplets. Secondly, it leads to increased formation of adducts in the gas volume of the working zone of a chemical reactor. Is been determined that the ammonium semi-dry method allows chemically bind more than 97 % of sulfur dioxide, which is output with flue gases of the boiler unit.Bibl. 14, Fig. 6, Table 1.

Author Biographies

I.A. Volchyn, Coal Energy Technology Institute of National Academy of Sciences, Kyiv

Doctor of Technical Sciences

A.M. Kolomiets, Coal Energy Technology Institute of National Academy of Sciences, Kyiv

Candidate of Technical Sciences

References

Zevenhoven R., Kilpinen P. Control of pollutants in flue gases and fuel gases. — Espoo : Helsinki University of Technology. Nordic Energy Research Programme. Solid Fuel Committee, February 2004. — Espoo-Turku, Finland.

Directive 2010/75/EU of the European Parliament and of the Council of 24 November 2010 on industrial emissions (integrated pollution prevention and control) (Recast),Official Journal L334, 2010, pp. 17–119.

Rozporiadzhennia Kabinetu Ministriv Ukrainy Pro implementatsiiu Uhody pro Asotsiatsiiu mizh Ukrainoiu ta Yevropeiskym Soiuzom, Yevropeiskym spivtovarystvom z atomnoi enerhii i yikhnimy derzhavamy-chlenamy vid 17 veresnia 2014 r. ¹ 847-r,Uriadovyi kurier,08.10.2014 (185). (Ukr.)

Integrated pollution prevention and control. Reference Document on Best Available Techniques for Large Combustion Plants. European Commission. Institute for Prospective Technological Studies (Seville), July 2006, 607 p. — Access mode: http://www.ipts.jrc.ec.europa.eu. 5. Kohl A.I. Gas purification. Houston : Gulf Publishing Company, 1997, 1403 p.

Evans A.P., Miller C., Pouliot S. Operational Experience of Commercial, Full Scale Ammonia-Based Wet FGD for Over a Decade, Coal-Gen 2009, Charlotte, North Carolina, USA, 2009, 19 p.

Volchyn I., Iasynetskyi A., Przybylski W., Maicher M. Semy-Dry Delsulphurisation for Coal Boilers, Proc. of 7-th International Conference on Clean Coal Technologies (CCT2015),Krakow, Poland, 17–21 May, 2015. IEA Clean Coal Centre. — Access mode: http:// cct2015.org/ibis/ CCT2015/home

Srivastava R.K., Jozewicz W. Flue gas desulphurisation: the state of the art, Journal of the Air & Waste Management Association, 2001.

Volchyn ².À., Karatsuba À.S., Kolomiets A.Ì. Matematychne modeliuvannia napivsukhoho metodu sirkoochyshchennia [Mathematical Modeling of Semi-Dry Method for Desulfurization, Jenerhetyka ta elektryfikatsiia [Energetics and Electrification],2005, (8), pp. 45–49 (Ukr.)

Kolomiiets O.M., Yasynetskyi A.O. Modeliuvannia napivsukhoho amiachnoho metodu vydalennia dioksydu sirky [Modeling of Semi-Dry Ammonia Method of Removing of Sulfur Dioxide, Jenerhotekhnolohii i resursozberezhenije [Energy Technologies and Resource Saving], 2014, (5–6), pp. 69–77. (Ukr.)

Volchyn I., Karatsuba A., Rudenko L. Features of use of limestone and lime in wet desulphurisa¬tion technology, Research Journal of Engineering Sciences, 2014, 3, Iss. 8, pp. 1–6.

Vance J.L., Peters L.K. Aerosol Formation Resulting from the Reaction of Ammonia and Sulfur Dioxide,The Journal of Industrial & Engineering Chemistry, 1976, 15 (3), pp. 202–214.

Hartley E.M., Matleson Sulfur Dioxide Reactions with Ammonia in Humid Air,The Journal of Industrial & Engineering Chemistry,1975, 14 (1), pp. 67–78.

Landreth R., de Pena R.G., Helcklen J. Thermodynamics of the Reaction of Ammonia and Sulfur Dioxide in the Presence of Water Vapor,The Journal of Physical Chemistry, 1975, 79 (17), pp. 1785–1796.

Published
2015-06-20
How to Cite
Volchyn, I., Kolomiets, A., & Yasinetskiy, A. (2015). NUMERICAL STUDY OF DESULPHURIZATION PROCESS BY THE AMMONIUM SEMI-DRY METHOD. Energy Technologies & Resource Saving, (3), 29-37. https://doi.org/10.33070/etars.3.2015.03
Section
Environment protection