Tar removal from biomass pyrolysis gas in two-step function of decomposition and adsorption

Phuphuakrat, Thana; Namioka, Tomoaki; Yoshikawa, Kunio

doi:10.1016/j.apenergy.2009.12.002

Cited by 170 publications

(77 citation statements)

References 30 publications

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“…In our previous paper [8], gasified rice husk char was proved to be capable of tar removal. Moreover, many researchers have reported their works on the tar removal performance of biomass char in gasification processes, which was also reviewed in the previous papers [8][9][10][11][12], confirming that rice husk char is capable of tar removal. In this research, the tar removal ability of each char produced from different pyrolysis temperature was investigated.…”

Section: Introductionmentioning

confidence: 92%

Influence of Pyrolysis Temperature on Rice Husk Char Characteristics and Its Tar Adsorption Capability

Paethanom

Yoshikawa

2012

Energies

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A biomass waste, rice husk, was inspected by thermoanalytical investigation to evaluate its capability as an adsorbent medium for tar removal. The pyrolysis process has been applied to the rice husk material at different temperatures 600, 800 and 1000 °C with 20 °C/min heating rate, to investigate two topics: (1) influence of temperature on characterization of rice husk char and; (2) adsorption capability of rice husk char for tar removal. The results showed that subsequent to high temperature pyrolysis, rice husk char became a highly porous material, which was suitable as tar removal adsorbent with the ability to remove tar effectively. In addition, char characteristics and tar removal ability were significantly influenced by the pyrolysis temperature.

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Section: Introductionmentioning

confidence: 92%

Influence of Pyrolysis Temperature on Rice Husk Char Characteristics and Its Tar Adsorption Capability

Paethanom

Yoshikawa

2012

Energies

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“…Tar easily condenses on the surface of pipes and filters and may cause blockage and corrosion in the engines and turbines used in the application of the producer gas [8][9][10][11][12]. Hence, tar control and conversion is one of the most important technical barriers for a successful application of the technology in the power markets [10,13].…”

Section: Introductionmentioning

confidence: 99%

Sampling of tar from sewage sludge gasification using solid phase adsorption

2012

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Sewage sludge is a residue from wastewater treatment plants which is considered to be harmful to the environment and all living organisms. Gasification technology is a potential source of renewable energy that converts the sewage sludge into gases that can be used to generate energy or as raw material in chemical synthesis processes. But tar produced during gasification is one of the problems for the implementation of the gasification technology. Tar can condense on pipes and filters and may cause blockage and corrosion in the engines and turbines. Consequently, to minimize tar content in syngas, the ability to quantify tar levels in process streams is essential. The aim of this work was to develop an accurate tar sampling and analysis methodology using solid phase adsorption (SPA) in order to apply it to tar sampling from sewage sludge gasification gases. Four types of commercial SPA cartridges have been tested to determine the most suitable one for the sampling of individual tar compounds in such streams. Afterwards, the capacity, breakthrough volume and sample stability of the Supelclean™ ENVI-Carb/NH(2), which is identified as the most suitable, have been determined. Basically, no significant influences from water, H(2)S or NH(3) were detected. The cartridge was used in sampling real samples, and comparable results were obtained with the present and traditional methods.

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“…A number of studies on plasma discharge types, oxidizer types (air, oxygen, etc. ), and tar ingredients have been conducted [11,12] as well as studies on the use of adsorption and the wet-type scrubber for tar removal [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Destruction of anthracene using a gliding arc plasma reformer

Chun

Kim

Yoshikawa

2011

Korean J. Chem. Eng.

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The gasification technology for biomass conversion has a limitation for some applications, including engines and turbines, because it produces tar-containing gas. In this study, a gliding arc plasma reformer was developed to remove tar. The plasma discharge in the gliding-type reformer is based on the both non-equilibrium and equilibrium plasmas. A simulation test was conducted using anthracene, which is produced during the gasification of biomass and waste, as the representative tar substance. In the optimal condition, the anthracene decomposition efficiency was 96.1%, and the energy efficiency was 1.14 g/kWh. The higher heating value of the gas produced from the anthracene decomposition was 11,324 kJ/Nm 3 , and the carbon balance was 98%. The steam flow rate, power input, total gas flow rate, and input concentration change were used as variables for the test. The anthracene decomposition efficiency was 81% when the gliding arc plasma reformer was used. When steam was fed at a rate of 0.63 L/min, the decomposition efficiency was highest (96.1%) due to the creation of OH radicals. The energy efficiency was highest (2.63 g/kWh) when the total gas flow rate was 24.1 L/min. H 2 , CO, and CO 2 were produced as reformed gases. At the steam injection rate of 0.37 L/ min or more, carbon black did not appear. Thus, it was verified that the gliding arc plasma reformer is effective for tar reduction.

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Tar removal from biomass pyrolysis gas in two-step function of decomposition and adsorption

Cited by 170 publications

References 30 publications

Influence of Pyrolysis Temperature on Rice Husk Char Characteristics and Its Tar Adsorption Capability

Influence of Pyrolysis Temperature on Rice Husk Char Characteristics and Its Tar Adsorption Capability

Sampling of tar from sewage sludge gasification using solid phase adsorption

Destruction of anthracene using a gliding arc plasma reformer

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