Effect of particle size and temperature on gasification performance of coconut and palm kernel shells in downdraft fixed-bed reactor

Ahmad Zubair Yahaya, Mahendra Rao Somalu, Andanastuti Muchtar, Shaharin Anwar Sulaiman, Wan Ramli Wan Daud

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Gasification of coconut shell (CS) and palm kernel shell (PKS) is conducted in a batch type downdraft fixed-bed reactor to evaluate the effect of particle size (1–3 mm, 4–7 mm, and 8–11 mm) and temperature (700, 800, and 900 °C) on gas composition and gasification performance. The response surface methodology integrated variance-optimal design is used to identify the optimum condition for gasification. Gas composition, which is measured using the biomass particle size of 1–11 mm at 700–900 °C, are 8.20–14.6 vol% (H 2 ), 13.0–17.4 vol% (CO), 14.7–16.7 vol% (CO 2 ), and 2.82–4.23 vol% (CH 4 ) for CS and 7.01–13.3 vol% (H 2 ), 13.3–17.8 vol% (CO), 14.9–17.1 vol% (CO 2 ), and 2.39–3.90 vol% (CH 4 ) for PKS. At similar conditions, the syngas higher heating value, dry gas yield, carbon conversion efficiency, and cold gas efficiency are 4.01–5.39 MJ/Nm 3 , 1.50–1.95 Nm 3 /kg, 52.2–75.9%, and 30.9–56.4% for CS, respectively, and 3.82–5.09 MJ/Nm 3 , 1.48–1.92 Nm 3 /kg, 59.0–81.5%, and 33.0–57.1% for PKS, respectively. Results reveal that temperature has a greater role than particle size in influencing the gasification reaction rate.

Original languageEnglish
Pages (from-to)931-940
Number of pages10
JournalEnergy
Volume175
DOIs
Publication statusPublished - 15 May 2019

Fingerprint

Gasification
Particle size
Gases
Temperature
Chemical analysis
Conversion efficiency
Reaction rates
Biomass
Heating
Carbon

Keywords

  • Biomass particle size
  • Coconut shell
  • Coconut shell
  • Downdraft gasifier
  • Gasification temperature
  • Palm kernel shell

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Pollution
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

Cite this

Effect of particle size and temperature on gasification performance of coconut and palm kernel shells in downdraft fixed-bed reactor. / Yahaya, Ahmad Zubair; Somalu, Mahendra Rao; Muchtar, Andanastuti; Sulaiman, Shaharin Anwar; Wan Daud, Wan Ramli.

In: Energy, Vol. 175, 15.05.2019, p. 931-940.

Research output: Contribution to journalArticle

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abstract = "Gasification of coconut shell (CS) and palm kernel shell (PKS) is conducted in a batch type downdraft fixed-bed reactor to evaluate the effect of particle size (1–3 mm, 4–7 mm, and 8–11 mm) and temperature (700, 800, and 900 °C) on gas composition and gasification performance. The response surface methodology integrated variance-optimal design is used to identify the optimum condition for gasification. Gas composition, which is measured using the biomass particle size of 1–11 mm at 700–900 °C, are 8.20–14.6 vol{\%} (H 2 ), 13.0–17.4 vol{\%} (CO), 14.7–16.7 vol{\%} (CO 2 ), and 2.82–4.23 vol{\%} (CH 4 ) for CS and 7.01–13.3 vol{\%} (H 2 ), 13.3–17.8 vol{\%} (CO), 14.9–17.1 vol{\%} (CO 2 ), and 2.39–3.90 vol{\%} (CH 4 ) for PKS. At similar conditions, the syngas higher heating value, dry gas yield, carbon conversion efficiency, and cold gas efficiency are 4.01–5.39 MJ/Nm 3 , 1.50–1.95 Nm 3 /kg, 52.2–75.9{\%}, and 30.9–56.4{\%} for CS, respectively, and 3.82–5.09 MJ/Nm 3 , 1.48–1.92 Nm 3 /kg, 59.0–81.5{\%}, and 33.0–57.1{\%} for PKS, respectively. Results reveal that temperature has a greater role than particle size in influencing the gasification reaction rate.",
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AU - Sulaiman, Shaharin Anwar

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AB - Gasification of coconut shell (CS) and palm kernel shell (PKS) is conducted in a batch type downdraft fixed-bed reactor to evaluate the effect of particle size (1–3 mm, 4–7 mm, and 8–11 mm) and temperature (700, 800, and 900 °C) on gas composition and gasification performance. The response surface methodology integrated variance-optimal design is used to identify the optimum condition for gasification. Gas composition, which is measured using the biomass particle size of 1–11 mm at 700–900 °C, are 8.20–14.6 vol% (H 2 ), 13.0–17.4 vol% (CO), 14.7–16.7 vol% (CO 2 ), and 2.82–4.23 vol% (CH 4 ) for CS and 7.01–13.3 vol% (H 2 ), 13.3–17.8 vol% (CO), 14.9–17.1 vol% (CO 2 ), and 2.39–3.90 vol% (CH 4 ) for PKS. At similar conditions, the syngas higher heating value, dry gas yield, carbon conversion efficiency, and cold gas efficiency are 4.01–5.39 MJ/Nm 3 , 1.50–1.95 Nm 3 /kg, 52.2–75.9%, and 30.9–56.4% for CS, respectively, and 3.82–5.09 MJ/Nm 3 , 1.48–1.92 Nm 3 /kg, 59.0–81.5%, and 33.0–57.1% for PKS, respectively. Results reveal that temperature has a greater role than particle size in influencing the gasification reaction rate.

KW - Biomass particle size

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KW - Coconut shell

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KW - Gasification temperature

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