Kinetic Model of Fixed Bed Reactor with Immobilized Microorganisms for Removing Low-Concentration SO2

Crude Palm Oil hydrocrcaking has been carried out over Ni/Mo ZrO2–pillared bentonite catalyst in a fixed bed reactor. Crude Palm Oil hydrocracking over Ni/Mo ZrO2–pillared bentonite catalyst formed 3 products i.e. gas, oil and coke. The oil product from Crude Palm Oil hydrocracking was analyzed by using gas chromatography to determine its composition. Three types of fraction were classified i.e. gasoline, kerosene and diesel oil. In this research, the focused of the study is of hydrocracking kinetics by using lump kinetic models. The kinetic model was solved by using the software MATLAB R2018b involves the effect of catalyst activity on the reaction rate. The results of the kinetic study show that the 4-lump (Crude Palm Oil, gas coke and oil) and 6-lump reaction models (Crude Palm Oil, gas, coke, gasoline, kerosene and diesel) can be used to explain the Crude Palm Oil hydrocracking over Ni/Mo ZrO2–pillared bentonite catalyst. The 4-lump kinetic model has 5 rate constants and the 6-lump kinetic model has 14 rate constants.

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Kinetics of Camphene Esterification to Isobornyl Acetate

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.233-235.990 ◽

2011 ◽

Vol 233-235 ◽

pp. 990-998 ◽

Cited By ~ 1

Author(s):

Dian Hua Liu ◽

Ding Ye Fang ◽

Qin Qin Guan ◽

A Jian Tao

Keyword(s):

Acetic Acid ◽

Kinetic Model ◽

Continuous Process ◽

Fixed Bed ◽

Space Velocity ◽

Batch Process ◽

Fixed Bed Reactor ◽

Feed Ratio ◽

Continuous Reaction ◽

Kinetics Of

The conventional process for isobornyl acetate synthesis from camphene and acetic acid is a batch process. The purpose of this paper is to synthesize isobornyl acetate in continuous process in a fixed bed reactor. The continuous reaction conditions were studied. The experiment was put into practice under the following conditions: 35-45, camphene/acetic acid feed ratio(wt%) from 1 to 2 and space velocity from 0.6 to 1.8 h-1. A kinetic model was developed which describes the experimental data well. A pilot fixed reactor was simulated by using the kinetic model.

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MODELING OF GAS OIL CATALYTIC CRACKING IN A FIXED BED REACTOR USING A FIVE-LUMP KINETIC MODEL

Chemical Engineering Communications ◽

10.1080/00986440903088637 ◽

2009 ◽

Vol 197 (3) ◽

pp. 275-288 ◽

Cited By ~ 3

Author(s):

Katica Sertić-Bionda ◽

Zoran Gomzi ◽

Marko Mužic

Keyword(s):

Kinetic Model ◽

Catalytic Cracking ◽

Fixed Bed ◽

Fixed Bed Reactor ◽

Gas Oil

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Kinetics of a fixed bed reactor with immobilized microorganisms for the removal of organic matter and phosphorous

Water Environment Research ◽

10.1002/wer.1353 ◽

2020 ◽

Vol 92 (11) ◽

pp. 1956-1965

Author(s):

Yaneth A. Bustos‐Terrones ◽

Rogelio Estrada‐Vázquez ◽

Blenda Ramírez‐Pereda ◽

Victoria Bustos‐Terrones ◽

Jesús Gabriel Rangel‐Peraza

Keyword(s):

Organic Matter ◽

Fixed Bed ◽

Fixed Bed Reactor ◽

Immobilized Microorganisms ◽

Kinetics Of

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Development and experimental validation of reactor kinetic model for catalytic cracking of eugenol, a potential bio additive fuel blend

International Journal of Chemical Reactor Engineering ◽

10.1515/ijcre-2021-0059 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Mythily Mani ◽

Thyagarajan Thangavelu ◽

Santhana Krishnan Perumal ◽

Shanthi Kannan

Keyword(s):

Kinetic Model ◽

Real Time ◽

Catalytic Cracking ◽

Catalyst Deactivation ◽

Fixed Bed ◽

Integrated Model ◽

Fixed Bed Reactor ◽

Design Parameters ◽

Exhaust Emission ◽

Time Data

Abstract An integrated kinetic model representing catalytic cracking of eugenol in a fixed bed reactor is developed. Eugenol, a major component of clove oil can act as the most potential bio additive fuel for improving the diesel quality thereby reducing the exhaust emission of the engine. The proposed integrated model includes four lump kinetic model which is plugged with catalyst deactivation model. The reactor design parameters are also included in the integrated model. The effectiveness of the proposed integrated model is compared with the conventional kinetic models and the results are presented. The proposed integrated model is validated against the real time data obtained by conducting an experiment in a real time setup with MoS2(Ni2P) Al-SBA-15(10) as the catalyst. The advantages of the proposed integrated model are highlighted.

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Kinetic Study of the Simultaneous Cracking of Paraffins and Methanol on HZSM-5 Zeolite Catalysts

International Journal of Chemical Reactor Engineering ◽

10.2202/1542-6580.1564 ◽

2007 ◽

Vol 5 (1) ◽

Cited By ~ 1

Author(s):

Diana Mier ◽

Andrés Tomás Aguayo ◽

Alaitz Atutxa ◽

Ana G Gayubo ◽

Javier Bilbao

Keyword(s):

Kinetic Model ◽

Catalyst Deactivation ◽

Fixed Bed ◽

Acid Catalyst ◽

Product Distribution ◽

Operating Conditions ◽

Zeolite Catalysts ◽

Fixed Bed Reactor ◽

Light Olefins ◽

Feed Temperature

A study has been carried out on the effect of acid catalyst properties and operating conditions (methanol/n-butane ratio in the feed, temperature, space time, time on stream) on the yield of light olefins (C2-C4) in the simultaneous cracking of n-butane and methanol. The operation has been carried out in an isothermal fixed bed reactor in the 400-575 °C range, using catalysts prepared based on HZSM-5 zeolites (with different Si/Al ratio), HY, Ni/HZSM-5 and SAPO-18. The results are evidence of a synergism between the transformation reactions of both reactants, whose consequence is an increase in the yield of olefins that correspond to the transformation of methanol and the cracking of n-butane. Furthermore, catalyst deactivation by coke is significantly attenuated compared to the corresponding transformation of methanol. Based on the effect of operating conditions on product distribution, a kinetic model is proposed by combining the schemes corresponding to the transformation of individual components.

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A Comprehensive Kinetic Model of Fischer-Tropsch Synthesis over Supported Cobalt Catalyst

10.20944/preprints201703.0027.v1 ◽

2017 ◽

Author(s):

Reza Jalilzadeh ◽

Mahmoud Moqadam

Keyword(s):

Kinetic Model ◽

Fixed Bed ◽

Operating Conditions ◽

Tropsch Synthesis ◽

Fixed Bed Reactor ◽

Molar Ratio ◽

Rate Equations ◽

Type Model ◽

Fischer Tropsch ◽

Fischer Tropsch Synthesis

A comprehensive kinetic model of the Fischer-Tropsch synthesis (FTS) is developed in a fixed bed reactor under operating conditions (temperature, 230–235°C, pressure, 20–25 bar, gas hourly space velocity, 4000–5000 cm3(STP)/h/gcatalyst ,H2/CO feed molar ratio, 2.1) over a Co based catalyst. Reaction rate equations based on Eley-Rideal (ER) type model for initiation step and Langmuir-Hinshelwood-Hougen-Watson (LHHW) type model for propagation and termination steps of the FTS reactions have been considered and the readsorption of olefins were taken into account. The model that was reported in the literature was modified in order to explain many significant deviations from the ASF distribution. Optimum parameters have been obtained by Genetic Algorithms (GA). The calculated activation energies to produce n-paraffins and 1-olefins were in the range of 82.24 to 90.68 kJ/mol and 100.66 to 105.24 kJ/mol, respectively. The hydrocarbon distribution in FTS reactions was satisfactorily predicted particularly for paraffins.

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Intrinsic Kinetics Study of CO Methanation on Ni-Mo-SiO2 Catalyst Prepared by Hydrothermal Method

Materials Science Forum ◽

10.4028/www.scientific.net/msf.921.40 ◽

2018 ◽

Vol 921 ◽

pp. 40-47

Author(s):

Jia Ying Zhang

Keyword(s):

Kinetic Model ◽

Orthogonal Design ◽

Fixed Bed ◽

Reaction Network ◽

Space Velocity ◽

Operating Conditions ◽

Least Square ◽

Fixed Bed Reactor ◽

Consecutive Reaction ◽

Wide Range

A comprehensive kinetic model for methanation of syngas on Ni-Mo-SiO2catalyst was developed on a fixed bed reactor data. The CO and H2conversion, methane selectivity and yield were obtained in a wide range of operating conditions including 300 < T < 450°C, 1 < H2/CO <4 and 0.1 < P < 1.5 MPa with the total weight hourly space velocity (WHSV) of 60000 ml/h/g. A 6-step reaction scheme defined to the description of a reaction network that considers both catalytic and gas-phase as well as primary and consecutive reaction steps to predict the performance of the syngas methantion. Orthogonal design method was adopted to select test points with temperature, pressure and feed compositions as factors and the kinetic rates involved Langmuir – Hinshelwood equation kinetic model. The kinetic rate parameters were estimated using the Least Square Method by MATLAB. Comparing the experimental and model predicted data showed that presented model has a reasonable fit between the experimental data and the predicted values with average absolute relative deviation of ±9.8%.

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