Influence of Olivine Activity on Plant Performance of a Commercial Dual Fludized Bed Gasifier Power Plant in Thailand

Siriwongrungson, Vilailuck; Thaveesri, Jullapong; Pang, Shusheng; Hongrapipat, Janjira; Messner, Michael; Rauch, Reinhard

doi:10.1109/icgea.2018.8356294

Cited by 4 publications

(7 citation statements)

References 20 publications

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“…Low amounts of calcium were observed on the fresh Chinese olivine before it was developed to the layered Chinese olivine. This is because calcium from the additives requires time to interact and incorporate into the bed material, as the interaction is based on a solid-solid reaction, which in general comes from biomass ash and additives (in this study it is calcium hydroxide and dolomite) [11,15,20]. This reaction was observed in the used Austrian olivine as received, which was the used calcined olivine from the Güssing Plant, in which a high amount of calcium was detected.…”

Section: Componentmentioning

confidence: 77%

“…Regarding the effect of bed material on tar reduction, it has been reported that the activity of tar cracking in the bed material was related to the mobility of iron at high temperatures [8,11,20,49]. From the above reasons, on the one hand, the used Austrian olivine may no longer be active, as there was no calcium; hence it did not indicate the iron or magnesium substitution.…”

Section: Componentmentioning

confidence: 99%

“…With appropriate surface composition, the bed material acts not only as the heat carrier, but also as a catalyst to enhance tar reforming and promote certain gasification reactions [3,4,10,11]. The DFB gasification system, first developed by the Vienna University of Technology (VUT) [9] at a scale of 100 kWth, has been commercialized successfully in Europe and Thailand [11]. The first power plant with this DFB technology was installed in Güssing, Austria in 2001 with a capacity of 8 MWth (denoted as "Güssing Plant" in this article).…”

Section: Dfb Gasification Systemmentioning

confidence: 99%

“…In these experiments, the used Austrian olivine from the Güssing Plant was initially requested and shipped to the Nong Bua Plant for its first start-up. This is because it was recommended that the used calcined olivine should be utilised during every start-up period in biomass gasification to minimize tars in the product gas, and the used calcined olivine from the previous run should be reused in the next run [11]. With this used Austrian olivine, there should not be a high tar concentration problem in the initial gasification.…”

Section: Bed Materials Characterizationmentioning

confidence: 99%

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Influence of bed materials on the performance of the Nong Bua dual fluidized bed gasification power plant in Thailand

Siriwongrungson

Hongrapipat²,

Kuba

et al. 2020

Biomass Conv. Bioref.

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Bed materials and their catalytic activity are two main parameters that affect the performance of the dual fluidized bed (DFB) gasification system in terms of product gas composition and tar levels. Two sources of bed materials were used for the operation of a commercial DFB gasification system in Thailand, using woodchips as a biomass feedstock.One source of the bed material was the calcined olivine which had been used in the Güssing Plant, Austria, and the other activated bed material was a mixture of fresh Chinese olivine and used Austrian olivine with additives of biomass ash, calcium hydroxide and dolomite. These bed materials were collected and analyzed for morphological and chemical composition using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray fluorescence spectroscopy (XRF). The product gas was cleaned in a scrubber to remove tars, from which the samples were collected for gravimetric tar analysis. Its composition data was automatically recorded at the operation site before it entered the gas engine. From the SEM, EDS and XRF analyses, calcium-rich layers around the bed materials were observed on the activated bed material. The inner layers of bed materials collected were homogeneous. Biomass ash, which was generally added to the bed materials, had significant calcium and potassium content. These calcium-rich layers of the bed materials, from the calcium hydroxide, biomass ash and dolomite, influenced system performance, which was determined by observing lower tar concentration and higher hydrogen concentration in the product gas.

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Section: Componentmentioning

confidence: 77%

Section: Componentmentioning

confidence: 99%

Section: Dfb Gasification Systemmentioning

confidence: 99%

Section: Bed Materials Characterizationmentioning

confidence: 99%

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Influence of bed materials on the performance of the Nong Bua dual fluidized bed gasification power plant in Thailand

Siriwongrungson

Hongrapipat²,

Kuba

et al. 2020

Biomass Conv. Bioref.

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“…The amount of calcium and potassium in the bed material collected from the operation period 2018 is higher than that in the bed material collected from the operation period 2017. The lower amount of calcium is because calcium from additives needs time for solid-solid reaction and incorporation into the bed material [28][29][30]. The amount of magnesium and iron in the bed material collected from the operation period 2018 is lower than that in the bed material collected from the operation period 2017.…”

Section: Bed Materials Characterizationmentioning

confidence: 99%

Influence of Gasification Operating Parameters on Performance of the Nong Bua Dual Fluidized Bed Gasification System in Thailand

Prasong

Siriwongrungson

Hongrapipat³

et al. 2021

Curr. Appl. Sci. Technol.

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Gasification system performance generally depends on feed moisture content, activity of bed material, gasifier and combustor temperatures, and scrubber media. The tar concentration and gas composition of product gas are two indicators of the gasification system performance. In this research, the effects of gasifier temperature and the activity of bed material on the tar concentration and gas composition of the product gas produced from a dual fluidized bed (DFB) gasification system power plant were investigated. The DFB gasification system power plant is located in Nong Bua district, Nakhon Sawan province, Thailand. Two periods of gasification operation were examined. These two periods were when the olivine was freshy activated and then after a period of operation. The gasifier temperature had several peaks during the operation, which caused the product gas composition to fluctuate. When the olivine had been used for a period, the percentage of hydrogen was approximately 3% higher than when the olivine had been freshly activated, and a lower heating value was observed, which was probably due to lower heating value of hydrogen. The tar concentration was substantially lower when compared with the freshly activated olivine. When the olivine was used for a period, the average tar concentration was 56±22 mg/Nm3 (this is after 95 h continuous operating time) while the average tar concentration of the freshly activate olivine was 872±125 mg/Nm3 (which was after 34.5 h continuous operating time). It was concluded that the average tar concentration and gas composition were influenced by the activity of the bed material and the gasification temperature.

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Experimental Investigation of Biomass Gasifier Using HTAG Technology

Thilak¹,

Suganyadevi²,

Varatharaj

et al. 2023

2023 International Conference on Intelligent Data Communication Technologies and Internet of Things (IDCIoT)

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Influence of Olivine Activity on Plant Performance of a Commercial Dual Fludized Bed Gasifier Power Plant in Thailand

Cited by 4 publications

References 20 publications

Influence of bed materials on the performance of the Nong Bua dual fluidized bed gasification power plant in Thailand

Influence of bed materials on the performance of the Nong Bua dual fluidized bed gasification power plant in Thailand

Influence of Gasification Operating Parameters on Performance of the Nong Bua Dual Fluidized Bed Gasification System in Thailand

Experimental Investigation of Biomass Gasifier Using HTAG Technology

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