STUDI NUMERIK 2D PEMBAKARAN CANGKANG KELAPA SAWIT PADA TUNGKU BOILER

Melvin Emil Simanjuntak(1*)

(1) Politeknik Negeri Medan
(*) Corresponding Author

Abstract


Cangkang kelapa sawit dengan nilai kalor 2770 kkal/kg mempunyai potensi sebagai bahan bakar boiler. Komposisi cangkang kelapa sawit meliputi kadar air 9,7%; gas volatil 67%; karbon tetap 21,2%; abu 2,1%; karbon 47,62 %; hidrogen 6,2%; oksigen 43,38%; nitrogen 0,7% dan sulfur 0,00% dalam kondisi air dry base. Penelitian ini adalah simulasi numerik 2 dimensi menggunakan software Flic yang digunakan untuk pembakaran partikel yang besar pada grate berjalan dan dipadukan dengan software Fluent untuk melihat karakteristik pembakaran pada ruang bakar boiler. Penelitian ini menggunakan kelebihan udara 30%, udara primer 70% dan udara sekunder 30%. Diameter cangkang diasumsikan 15 mm. Konsumsi cangkang pada pembakaran sebanyak 6395 kg/jam. Kecepatan bed bervariasi sebesar 5 – 8 m/jam.  Hasil yang diperoleh menunjukkan temperatur gas panas di daerah superheater sekitar 1093 – 1464 K, diperoleh juga kontur spesies gas hasil pembakaran.


Keywords


cangkang, tungku, pembakaran, profil temperatur, spesies gas

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References


Dodd, V. A. dan Grace, P. M., 1984, Agricultural Engineering, Vol.

, International Commission of Agricultural Engineering, Taylor

Francis.

X. Zhang, Q. Chen, R. Bradford, V. Sharifi, dan J. Swithenbank,

, “Experimental investigation and mathematical modelling

of wood combustion in a moving grate boiler,” Fuel Processing

Technology, vol. 91, no. 11, pp. 1491–1499.

Y. B. Yang, J. Goodfellow, dan V. Nasserzadeh, 2005, “Study on

the transient process of waste fuel incineration in a full scale

moving bed furnace,” Combustion Science and Technology, vol.

, pp. 37–41.

Y. B. Yang, C. Ryu, J. Goodfellow, V. N. Sharifi, dan J.

Swithenbank, 2004, “Modelling waste combustion in grate

furnaces,” Process Safety Environmetal Protection, vol. 82, no.

B, pp. 208–222.

Y. B. Yang, R. Newman, V. Sharifi, J. Swithenbank, dan J. Ariss,

, “Mathematical modelling of straw combustion in a 38

MWe power plant furnace and effect of operating conditions,”

Fuel, vol. 86, no. 1–2, pp. 129–142.

R. Zakaria, Y. B. Yang, dan R. G. Siddall, 2000, “Mixing, Modelling

and Measurements of Incinerator Bed Combustion Moving

Grate,” Trans IChemE, vol. 78, pp. 21-32.

Y. R. Goh, Y. B. Yang, R. Zakaria, R. G. Siddall, V. Nasserzadeh,

dan J. Swithenbank, 2001, “Development of an incinerator bed

model for municipal solid waste incineration,” Combustion

Science Technology, vol. 162, no. 1–6, pp. 37–58.

Y. Bin Yang, V. N. Sharifi, dan J. Swithenbank, 2007, “Converting

moving-grate incineration from combustion to gasification -

Numerical simulation of the burning characteristics,” Waste

Management, vol. 27, no. 5, pp. 645–655.

M. E. Simanjuntak, , 2010, Perancangan Awal dan Simulasi

Pembakaran Tungku Berbahan Bakar Tandan Kosong Kelapa

Sawit untuk PLTU Berkapasitas 3 MW, Tesis, Jurusan Teknik

Mesin, ITB, Bandung.

M. E. Simanjuntak dan M. B. Sitorus, 2012, "Desain Awal PLTU

dan Boiler Berbahan Bakar Cangkang Kelapa Sawit dengan

Kapasitas 31100 kg uap/jam", Sinergi, Vol. 1.

J. B. Kitto dan S. C. Schultz, 2005, Steam Its Generation and

Use, 41st Edition, The Babcock and Wilcox Company, Ohio, USA.

M. A. Gómez, J. Porteiro, D. De la Cuesta, D. Patiño, dan J. L.

Míguez, 2017, “Dynamic simulation of a biomass domestic boiler

under thermally thick considerations,” Energy Conversion

Management, vol. 140, pp. 260–272.

C. Yin dan S. Li, 2017, “Advancing grate-firing for greater

environmental impacts and efficiency for decentralized

biomass/wastes combustion,” Energy Procedia, vol. 120, pp. 373–379.

Y. Tu, A. Zhou, M. Xu, W. Yang, K. B. Siah, dan P. Subbaiah, 2018, “NOX reduction in a 40 t/h biomass fired grate boiler using internal flue gas recirculation technology,” Applied Energy, vol. 220, pp. 962–973.




DOI: https://doi.org/10.35314/ip.v8i2.754

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