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development of Renewable Diesel Production Under Free External H2 Using Hydrogen Donor Solvents: The Effect of Hydrogen Donor Solvents and Ni-Based catalysts

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SSRN 2023年

作者： Hongloi, Nitchakul Prapainainar, Chaiwat Seubsai, Anusorn Sudsakorn, Kandis Kiatkittipong, Worapon Limphirat, Wanwisa Prapainainar, Paweena National Center of Excellence for Petroleum Petrochemicals and Advance Material Department of Chemical Engineering Faculty of Engineering Kasetsart University Bangkok10900 Thailand Department of Chemical Engineering Faculty of Engineering King Mongkut’s University of Technology North Bangkok Bangkok10800 Thailand Research and Development Center for Chemical Unit Operation and Catalyst Design Science and Technology Research Institute King Mongkut’s University of Technology North Bangkok Bangkok10800 Thailand Research Network of NANOTEC KU on NanoCatalysts and NanoMaterials for Sustainable Energy and Environment Bangkok10900 Thailand Department of Chemical Engineering Faculty of Engineering and Industrial Technology Silpakorn University Nakhon Pathom73000 Thailand Nakhon Ratchasima30000 Thailand

Green diesel is composed of C14-C16 alkane similar to petroleum diesel. Typically, the reaction for green diesel production necessitates a large amount and high pressure of external H2, which influences the cost of production. Using in situ H2 is an interesting way to develop the production of green diesel. The purpose of this work was to investigate the effect of hydrogen donor solvents (formic acid, acetic acid, methanol, ethanol, lactic acid, and glycerol) on green diesel production over 10%Ni, 15%Ni, NiCu, NiCo, and NiMo on ZrO2 catalysts. The results from characterization techniques confirmed that the ZrO2 support and all catalysts had been successfully synthesized. The reaction was carried out at 270 °C for 6 h using palmitic acid as a reactant. The palmitic acid conversion was up to 90%. The liquid product composition varied depending on the type of H-donor solvent used. Except for alcohol type, the main product components from all H-donor solvents were C15-C16 alkanes (green diesel). The selectivity of alkyl ester (biodiesel) produced from fatty acids using methanol and ethanol exceeded 83%. The presence of C16 alkane from the hydrodeoxygenation pathway and H2 in gas products confirmed that all the solvents could act as hydrogen donors. © 2023, The Authors. All rights reserved.

关键词： Paraffins

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Box-Behnken design Optimizing Operating Conditions in Bio-Hydrogenated Diesel Production by Using Bhd Product as a Solvent

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SSRN 2023年

作者： Prapainainar, Paweena Ounsuk, Patravee Prapainainar, Chaiwat Hongloi, Nitchakul Sudsakorn, Kandis Lalitpattarakit, Montida Seubsai, Anusorn Kiatkittipong, Worapon Wongsakulphasatch, Suwimol Assabumrungrat, Suttichai Sureeyatanapas, Panitas National Center of Excellence for Petroleum Petrochemicals and Advance Material Department of Chemical Engineering Faculty of Engineering Kasetsart University Chatuchak Bangkok10900 Thailand Department of Chemical Engineering Faculty of Engineering King Mongkut's University of Technology North Bangkok Bangsue Bangkok10800 Thailand Research and Development Center for Chemical Unit Operation and Catalyst Design Science and Technology Research Institute King Mongkut’s University of Technology North Bangkok Bangkok10800 Thailand Research Network of NANOTEC - KU on NanoCatalysts and NanoMaterials for Sustainable Energy and Environment Kasetsart University Bangkok10900 Thailand Department of Chemical Engineering Faculty of Engineering and Industtrial Technology Silpakorn University Nakhon Pathom73000 Thailand Center of Excellence in Catalysis and Catalytic Reaction Engineering Department of Chemical Engineering Faculty of Engineering Chulalongkorn University Bangkok10330 Thailand Bio-Circular-Green-economy Technology & Engineering Center BCGeTEC Department of Chemical Engineering Faculty of Engineering Chulalongkorn University Bangkok10330 Thailand Department of Industrial Engineering Faculty of Engineering Khon kaen University Khon Kaen40002 Thailand

The development of alternative liquid fuels, such as bio-hydrogenated diesel (BHD), is becoming increasingly important to reduce fossil fuel consumption. In addition, BHD components (such as hexadecane) can be used as a solvent to simplify product separation for the first time. This paper demonstrated the influence of several parameters—temperature (250, 200, 350 ◦C), pressure (10, 20, 30 bar), and reactant-to-solvent ratio (1:0, 1:0.5, 1:1)—for BHD production using palmitic acid as the reactant and hexadecane as the solvent with a nickel-on-zirconia catalyst. Response surface methodology was used to determine the optimum conditions for responses (palmitic acid conversion, BHD selectivity, and yield). A set of experiments was established based on a Box-Behnken designs. The results showed that the most significant parameter for palmitic acid conversion and BHD yield was temperature, especially when higher than 300 ◦C, where the BHD yield increased from 45% to 80%. Overall, the optimum operating conditions were 350 ◦C, 17 bar, and a reactant-to-solvent ratio of 1:0.77, revealing the potential for further use of BHD products as solvent. Deoxygenation of palm fatty acid with hexadecane as solvent found highest conversion of 82.7% and BHD selectivity of 84.38% at reaction time 4 hr. © 2023, The Authors. All rights reserved.

关键词： Solvents

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Influence of heat removal using fine bubbles

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IOP Conference Series: Materials Science and engineering 2020年第3期736卷

作者： P Jiamrittiwong R Kokoo T Srisurat Faculty of Science Energy and Environment King Mongkut's University of Technology North Bangkok Rayong Campus Rayong Thailand Research and Development Center for Chemical Engineering Unit Operation and Catalyst Design (RCC) King Mongkut's University of Technology North Bangkok Bangkok Thailand Department of Chemical Engineering Faculty of Engineering King Mongkut's University of Technology North Bangkok Bangkok Thailand

Cooling towers are necessary units used to cool down hot water from industrial processes. These units use high air volume metric flow rate and make up water. These are the disadvantages of using cooling towers. This research applied bubbling technique to cool down hot water. The bubble column was used in this study at different air flow rate. Hot water filled in the column was set at 40°C. Water loss and the reduction of temperature of water were observed. The results showed that the highest evaporation rate of water and the shortest of bubbling time were observed at the highest air flow rate. On the other hand, the lowest amount of air used was observed at the lowest of air flow rate which is the optimum condition of this study. In addition, the rate of heat transfer increases when the turbulent flow in the bubble column was formed.

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One step NaBH_4 reduction of Pt-Ru-Ni catalysts on different types of carbon supports for direct ethanol fuel cells : Synthe sis and characte rization

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燃料化学学报 2017年第5期45卷 596-607页

作者： Napha Sudachom Chompunuch Warakulwit Chaiwat Prapainainar Thongthai Witoon Paweena Prapainainar National Center of Excellence for Petroleum Petrochemicals and Advance MaterialDepartment of Chemical EngineeringFaculty of EngineeringKasetsart University Center for Advanced Studies in Nanotechnology for Chemical Food and Agricultural IndustriesKU Institute for Advanced StudiesKasetsart University Physical Chemistry Department Kasetsart University Department of Chemical Engineering King Mongkut's University of Technology North Bangkok Research and Development Centre for Chemical Engineering Unit Operation and Catalyst Design King Mongkut's University of Technology North Bangkok

The ternary catalyst Pt75Ru5Ni20 was conducted on various types of carbon supports including functionalized Vulcan XC-72R(f-CB),functionalized multi-walled carbon nanotubes(f-MWCNT),and mesoporous carbon(PC-Zn-succinic)by sodium borohydride chemical reduction method to improve the ethanol electrooxidation reaction(EOR)for direct ethanol fuel cell(DEFC).It was found that the particle size of the metals on f-MWCNT was 5.20 nm with good particle *** alloy formation of ternary catalyst was confirmed by XRD and more clearly described by SEM element mapping,which was relevant to the efficiency of the ***,the mechanism of ethanol electrooxidation reaction based on the surface reaction was more *** activity and stability for ethanol electrooxidation reaction(EOR)were investigated using cyclic voltammetry and chronoamperometry,*** highest activity and stability for EOR were observed from Pt75Ru5Ni20/f-MWCNT due to a good metal-carbon *** and Ni presented in Pt-Ru-Ni alloy improved the activity and stability of ternary catalysts for ***,the reduction of Pt content in ternary catalyst led to the catalyst cost deduction in DEFC.

关键词： ternary catalyst ethanol electrooxidation reaction multiwall carbon nanotubes mesoporous carbon

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Effect of nitrogen bubble for biodiesel production from used cooking oil

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IOP Conference Series: Materials Science and engineering 2020年第2期736卷

作者： N Wiriya R Kokoo K Wichianwat P Jiamrittiwong T Srisurat Faculty of Science Energy and Environment King Mongkut's University of Technology North Bangkok Rayong Campus Nonglalok Bankhai Rayong 21120 Thailand Department of Chemical Engineering Faculty of Engineering King Mongkut's University of Technology North Bangkok Bangkok 10800 Thailand Research and Development Center for Chemical Engineering Unit Operation and Catalyst Design (RCC) STRI Building King Mongkut's University of Technology North Bangkok Bangkok 10800 Thailand

Biodiesel is alternative energy produced using natural raw materials. The famous reaction used to produce biodiesel is transesterification. In the commercial scale, the mixing process is the crucial step for transesterification. Electric stirring motor used to mix raw materials in the conventional process consumes a lot of energy. This results in high production cost. In this research, bubbling technique was used to replace the electric stirring motor. Waste nitrogen gas obtained from the gas separation industry was fed to the bubble column filled with used sunflower oil and other reactants. Microbubbles of nitrogen gas were generated in the column. The results showed that the product yields obtained from the stirring technique is higher than the bubbling technique by 2.63% at the same operating time. In case of energy consumption, the bubbling technique can reduce electricity used by 50% compared with the stirring technique.

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Effect of Basicity on Cu Based catalyst for CO2 Hydrogenation

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IOP Conference Series: Earth and Environmental Science 2020年第1期586卷

作者： H Sukkathanyawat K Wichianwat S Tungkamani A Bampenrat Faculty of Science Energy and Environment King Mongkut's University of Technology North Bangkok Rayong campus Rayong Thailand Research and Development Center for Chemical Engineering Unit Operation and Catalyst Design (RCC) King Mongkut's University of Technology North Bangkok Bangkok Thailand Department of Industrial Chemistry Faculty of Applied Science King Mongkut's University of Technology North Bangkok Bangkok Thailand

The purpose of this research is to study the effect of the MgO loading (0.25, 0.5, 1 and 2 Molar) on the Cu/AC catalysts for CO2 hydrogenation. The optimum condition of reaction temperature and ratio of H2:CO2 for CO2 hydrogenation were also investigated. Copper based catalysts were characterized by BET, CO2-TPD, H2-TPR and CO2-TPSR. The catalytic performance of catalysts were carried out in the fixed bed reactor at a reaction temperature of 250 °C pressure of 1 atm with mixture gas of 2:1 molar ratio of H2:CO2. The result shows that MgO increases the surface basicity of catalyst which enhances the bond strength between CO adsorbed on Cu loading to inhibition the reverse water-gas shift reaction, which can well promote the methane selectivity. The optimum conditions for CO2 hydrogenation is temperature of reaction at 300 °C and ratio of H2:CO2 as 2:1.

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Flow Behaviour in the calciner of cement production

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IOP Conference Series: Materials Science and engineering 2020年第2期736卷

作者： P Sooklon P Jiamrittiwong K Pana-Suppamassadu N Swadchaipong T Srisurat Faculty of Science Energy and Environment King Mongkut's University of Technology North Bangkok Rayong Campus Nonglalok Bankhai Rayong 21120 Thailand Research and Development Center for Chemical Engineering Unit Operation and Catalyst Design (RCC) STRI Building Bangkok 1518 Pracharat 1Rd. Wongsawang Bangsue Bangkok 10800 King Mongkut's University of Technology North Bangkok Thailand Department of Chemical Engineering King Mongkut's University of Technology North Bangkok Bangkok 1518 Pracharat 1Rd. Wongsawang Bangsue Bangkok 10800 Thailand The Sirindhron International Thai-German Graduate School of Engineering King Mongkut's University of Technology North Bangkok Bangkok Thailand

Calciner was one of the cement production unit that used momentum, heat, mass distribution and chemical reaction to change calcium carbonate into calcium oxide. One of the important processes was fluid flow. Thus, the computational fluid dynamic was used to predict the flow behavior in the calciner. Regarding gas hydrodynamics, the Navier-Stokes equations were applied along with all practical operating conditions. The simulation results showed that both sides of calciner had the same velocity. High velocity was originated from decreasing of flow area. The velocity in the conjunction zone between TAD and Kiln had high unsteady velocity distribution but, in the higher level, the velocity approached a steady state. This simulation model could be used as a preliminary data in order to predict the temperature distribution.

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Effect of pore size diameter of cobalt supported catalyst on gasoline-diesel selectivity

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Energy Procedia 2017年 138卷 1035-1040页

作者： Saowaluk Intarasiri Tanakorn Ratana Thana Sornchamni Monrudee Phongaksorn Sabaithip Tungkamani Department of Industrial Chemistry King Mongkut’s University of Technology North Bangkok Bangkok Thailand Research and Development Center for Chemical Engineering Unit Operation and Catalyst Design (RCC) King Mongkut’s University of Technology North Bangkok Bangkok Thailand PTT Public Company Limited Bangkok Thailand

Fischer Tropsch synthesis (FTS) are renewed and interesting reaction for producing long chain hydrocarbons over metal supported catalyst. In this work, the effect of pore size diameter of cobalt supported mesoporous silica, synthesized by different method, on selectivity and activity towards gasoline and diesel were investigated. Cobalt-based catalyst was characterized by BET and H 2 -TPD technique. The FTS performance was carried out in a fixed bed reactor at 220°C, 1 atm, and GHSV of 305 h -1 for 24 h time-on-stream using H 2 :CO ratio of 2:1. The results show that pore size diameter of 20CS1 catalyst is larger than 20CS2 catalyst. Larger particle size of 20CS1 catalyst results in a lower dispersion of Co metallic. Moreover, 20CS1catalyst gives high selectivity of gasoline-diesel products, while 20CS2 catalyst is selective to methane production.

关键词： Cobalt-based catalyst Fischer-Tropsch reaction gasoline-diesel fuel

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Catalytic performance of Iron-based catalyst in Fischer–Tropsch synthesis using CO 2 containing syngas

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Energy Procedia 2017年 138卷 998-1003页

作者： Paphatsara Sirikulbodee Tanakorn Ratana Thana Sornchamni Monrudee Phongaksorn Sabaithip Tungkamani Department of Industrial Chemistry King Mongkut’s University of Technology North Bangkok Bangkok 10800 Thailand Research and Development Center for Chemical Engineering Unit Operation and Catalyst Design (RCC) King Mongkut’s University of Technology North Bangkok Bangkok 10800 Thailand PTT Public Company Limited Bangkok 10900 Thailand

This paper focuses on the catalytic performance of iron-based catalyst in Fischer–Tropsch Synthesis (FTS) using CO 2 containing syngas. The catalysts were prepared by incipient wetness impregnation method of silica with solution of iron nitrate followed by calcination in air. Physical and chemical properties of iron-based catalyst were carried out using N 2 adsorption-desorption, H 2 -TPR, CO-TPR and TPH. The catalysts were tested in Fischer–Tropsch conditions (T = 220°C, P = 1 bar, GHSV = 300 h -1 , H 2 /CO x = 0.5). The results show that iron-based catalyst activated by CO is more active for hydrogenation than the catalyst activated by H 2 . The activation of iron-based catalyst by CO provides iron carbide combining with iron oxide which was reduced partially. Fe 3 O 4 (partial reduced iron oxide) is expected to be exist in the iron-based catalyst pretreated by CO. This oxide phase allows the conversion of CO 2 to CO through the reverse water-gas-shift (RWGS) reaction. Thus, iron-based catalyst activated by CO is a candidate catalyst for FTS using CO 2 containing syngas. Fe 3 O 4 enhances RWGS activity while iron carbide is effective for the hydrogenation. The different product distributions of H 2 -CO, H 2 -CO 2 and H 2 -CO-CO 2 mixtures are due to the different reaction pathway of CO and CO 2 . The key of reaction pathway is the active site generated from pretreatment method.

关键词： CO hydrogenation CO 2 hydrogenation Iron-based catalyst Fischer-Tropsch synthesis Carburization

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Numerical study of micro-reactor inlet geometry for fischer-tropsch synthesis

Numerical study of micro-reactor inlet geometry for fischer-...

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International Conference on Advanced Materials, Structures and Mechanical engineering, ICAMSME 2015

作者： Chaiwang, W. Theampetch, A. Narataruksa, P. Prapainainar, C. Department of Chemical Engineering King Mongkut’s University of Technology North Bangkok Bangkok Thailand Research and Development Center Chemical Engineering Unit Operation and Catalyst Design King Mongkut’s University of Technology North Bangkok Bangkok Thailand

ISBN: (纸本)9781138027930

In this work, the effect of inlet manifold geometry of a microchannel reactor for Fischer- Tropsch Synthesis (FTS) is studied using a Computational Fluid Dynamics (CFD) model. The model comprises 36 parallel flow channels, with a conical shape of inlet diffuser, and the flow channels are at the micron scale. In order to minimize maldistribution of gaseous reactants (H2 and CO), the geometry, that is, diffuser length and width, of the inlet of the reactor entrance are focused on. The results show that optimal inlet geometry can be obtained with a given degree of flow uniformity. For such design, low deviation of the average velocity in all flow channels, with lower than 0.5% degree of uniformity, is obtained. © 2016 Taylor & Francis Group, London.

关键词： Fischer-Tropsch synthesis

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