Patcharavorachot, Yaneeporn

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Preferred name
Patcharavorachot, Yaneeporn
Alternative Name
Patcharavorachot, Y.
Main Affiliation
Email
yaneeporn.pa@kmitl.ac.th

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    Item type:Publication,
    Exergoeconomics of hydrogen production from biomass air-steam gasification with methane co-feeding
    (2017-01-01)
    Nakyai, Teeranun
    ;
    Authayanun, Suthida
    ;
    Patcharavorachot, Yaneeporn
    ;
    Arpornwichanop, Amornchai
    ;
    Assabumrungrat, Suttichai
    Biomass is one of the most promising energy sources for hydrogen production. However, biomass gasification has a low hydrogen content in the producer gas. To increase the hydrogen yield, the co-feeding of methane into biomass gasification is proposed in this study. The type of gasifying agent is a key factor in the determination of the content of the hydrogen product. To compare the designs and find the best performance criteria of a process, not only energy and exergy analyses but also a cost analysis of the process should be investigated. In the present study, the effects of various types of gasifying agent, i.e., air and both steam and air, for the biomass gasification with/without methane co-feeding are investigated through an exergoeconomic analysis. It is observed that the air-steam used as an agent achieves high energy and exergy efficiency. Methane co-feeding can improve the energy and exergy efficiency. In exergoeconomic analysis, the specific exergy cost (SPECO) method is applied to investigate the unit cost of hydrogen. The economic reveal that the biomass gasification using air-steam as an agent with methane co-feeding also presented the lowest unit hydrogen cost of 2.69 $/kg. The unit exergy cost of hydrogen is 0.068 $/kW h.
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    Item type:Publication,
    Parametric analysis of a circulating fluidized bed biomass gasifier for hydrogen production
    (2015-03-15)
    Chutichai, Bhawasut
    ;
    Patcharavorachot, Yaneeporn
    ;
    Assabumrungrat, Suttichai
    ;
    Arpornwichanop, Amornchai
    Biomass is considered a potential energy source which can be efficiently converted to useful gaseous products via a gasification process. Circulating fluidized bed (CFB) gasifiers have attracted significant attention due to their high reaction rates and thermal efficiency. This study aims to investigate the CFB biomass gasification process to generate H<inf>2</inf>-rich synthesis gas. A process simulator is used to analyze the gasifier performance by assuming that the gasification is fast and reach equilibrium. Parametric analysis of the CFB gasifier shows that steam gasification generates the synthesis gas attained the highest H<inf>2</inf> content (50-65vol.%) and the highest product gas quality (higher heating value, HHV=10-13MJ/Nm<sup>3</sup>) at operating temperatures approximately 650-700°C. High-temperature steam cannot provide enough energy for the gasifier, reducing the gross cold gas efficiency of this process to only 16%. The biomass air-steam gasification process is investigated while avoiding high energy consumption, but less H<inf>2</inf> is produced under these conditions.
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    Item type:Publication,
    Comparative analysis of biomass and coal based co-gasification processes with and without CO2 capture for HT-PEMFCs
    (2019-01-22)
    Mongkolsiri, Pichamon
    ;
    Jitkeaw, Salinee
    ;
    Patcharavorachot, Yaneeporn
    ;
    Arpornwichanop, Amornchai
    ;
    Assabumrungrat, Suttichai
    With the seasonal availability and low energy density of biomass and the high environmental impact of coal, the co-gasification of biomass and coal is an alternative approach facilitating a trade-off between renewable and non-renewable resources. The aim of this study was to investigate hydrogen production from the co-gasification of biomass and coal integrated by means of the sorption-enhanced water gas shift reactor (G-SEWGS) for a high temperature proton exchange membrane fuel cell (HT-PEMFC). The effects of the gasifier temperature, the steam to fuel ratio (S/F ratio), and the equivalence ratio (ER) on the hydrogen production performance and environmental impact of the G-SEWGS were theoretically analysed and compared with the conventional gasifier integrated with the water gas shift reactor (G-WGS) and the sorption-enhanced gasifier integrated with the water gas shift reactor (SEG-WGS). As compared to the conventional water gas shift reactor, the addition of a CaO sorbent in the modified water gas shift reactor not only reduces the amount of the CO<inf>2</inf> emission but also leads to an increase in the hydrogen concentration and hydrogen content. The G-SEWGS provides better performance in terms of its fuel processor efficiency and CO<inf>2</inf> emission than the G-WGS and the SEG-WGS. Also, the problem of sulphur compound in the hydrogen-rich gas can be reduced by using of the sorption-enhanced water gas shift reactor (SEWGS). The best system exergy efficiency, which was around 22% for the power generation, was determined from the HT-PEMFC integrated with the G-SEWGS. The main exergy destruction of around 70% of the total loss was caused by hydrogen production processes.