The Improvement of Yield in Formaldehyde Process

Anupong Intawong; Somkamon Manchun; Jeerapat Ngaoprasertwong

doi:10.4028/www.scientific.net/KEM.719.79

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 719The Improvement of Yield in Formaldehyde Process

The Improvement of Yield in Formaldehyde Process

Abstract:

Various factors influence the efficacy of formaldehyde production. In this study, response surface methodology was applied for optimization of process parameters on the response variable (yield of formaldehyde production: Y) by a central composite design (CCD). Factors studied are the reaction temperature (X₁= 640-660 °C), mole ratio of methanol to oxygen (X₂= 2.34-2.38), mole ratio of steam to methanol (X₃= 0.90-1.10), reaction time (X₄= 22-26 millisecond; ms), and air inlet temperature (X₅= 25-30°C). As a result of CCD evaluation, the predicted quadratic regression model for response variables was significant (p < 0.05). Further 0.9745 R²values indicated satisfactory fit of the model. In addition, the 3-D response surface and the contour plots derived the obtained model were applied to determine the optimal conditions. The optimum conditions were as follows: X₁ = 660 °C, X₂ =2.38, X₃ = 1.10, X₄ = 23.90 ms and X₅= 30 °C. Corresponding to these conditions, the experimental response value (yields of formaldehyde production) agreed closely with the predicted yields of 88.61%.

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Key Engineering Materials (Volume 719)

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79-83

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https://doi.org/10.4028/www.scientific.net/KEM.719.79

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Online since:

November 2016

Authors:

Anupong Intawong*, Somkamon Manchun, Jeerapat Ngaoprasertwong

Keywords:

Central Composite Design, Formaldehyde Production, Optimization, Response Surface

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