A study on co-gasification of high ash Indian coal with petcoke in a fluidized bed gasifier

##plugins.themes.academic_pro.article.main##

Ch. Tirupathi Naidu
N. SivaramaKrishna
I. Nagamohan
D. Satyamohan Rao

Abstract

An investigation has been undertaken to study the co-gasification of high ash sub bituminous Indian coal with petcoke in a bubbling Fluidized Bed Gasifier (FBG) system. The objective of this work is to study the effect of petcoke content in coal blend feed on gasification characteristics by carrying experiments in a pilot scale 1.2 T/d FBG (I.D. 0.2m X height 4.2m) system using air and steam as gasifying agents. The gasification characteristics include cold gas efficiency, carbon conversion, calorific value and composition of synthesis gas (syngas).Reactivity study carried in High Pressure Thermo Gravimetric Analyser (HPTGA) shows that coal blend reactivity decreases with increase in petcoke content in it. Gasification results indicate that increase in petcoke content in blend leads to decrease in carbon conversion and syngas calorific value which could be attributed to low reactivity of petcoke. A very low carbon conversion and syngas calorific value for petcoke gasification indicate that it may not be viable to gasify petcoke in FBG system.

##plugins.themes.academic_pro.article.details##

How to Cite
Tirupathi Naidu, C., SivaramaKrishna, N., Nagamohan, I., & Satyamohan Rao, D. (2015). A study on co-gasification of high ash Indian coal with petcoke in a fluidized bed gasifier. Power Research - A Journal of CPRI, 591–600. Retrieved from https://node6473.myfcloud.com/~geosocin/CPRI/index.php/pr/article/view/716

References

  1. A J Minchener, Coal gasification for advanced power generation, Fuel, Vol. 84, No. 17, pp. 2222-2235, Dec. 2005.
  2. P Mondal, G S Dang, M O Garg, Syngas production through gasification and cleanup for downstream applicationRecent developments, Fuel processing technology,Vol. 92, No. 8, pp. 1395-1410, Aug 2011.
  3. S H Lee, S Y Yoon, H W Ra, Y I Son, J C Hong, J G Lee, Gasification characteristics of coke and mixture with coal in an entrained-flow gasifier, Energy, Vol. 35, No. 8, pp. 3239-3244, Aug 2010.
  4. J Fermoso, B Arias, M G Plaza, C Pevida, F Rubiera, J J Pis, F Garcia-Pena, P Casero, High-pressure co-gasification of coal with biomass and petroleum coke, Fuel Processing Technology, Vol. 90, No. 7-8, pp. 926-932, July-Aug 2009.
  5. A Goyal, S Pushpavanam, R K Voolapalli, Modeling and simulation of co-gasification of coal and petcoke in a bubbling fluidiized bed gasifier, Fuelprocessing technology, Vol. 91, No. 10, pp. 1296-1307, Oct 2010.
  6. S Nagpal, T K Sarkar, P K Sen, “Simulation of petcoke gasification in slagging moving bed reactors”, Fuel Processing Technology, Vol. 86, No. 6, pp. 617-640, March 2005.
  7. G Liu, P Benyon, K E Benfell, G W Bryant, A G Tate, R K Boyd, D J Harris, T F Wall, “The porous structure of bituminous coal chars and its influence on combustion and gasification under chemically controlled conditions”, Fuel, Vol. 79, No. 6, pp. 617626, May 2000.