Modeling and operating conditions optimization of Fischer–Tropsch synthesis in a fixed-bed reactor

2012 ◽  
Vol 18 (4) ◽  
pp. 1515-1521 ◽  
Author(s):  
Ali Akbar Mirzaei ◽  
Bahman Shirzadi ◽  
Hossein Atashi ◽  
Mohsen Mansouri
Keyword(s):  
Fixed Bed ◽  
Operating Conditions ◽  
Tropsch Synthesis ◽  
Fixed Bed Reactor ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis

Fischer Tropsch Synthesis: The Promoter Effects, Operating Conditions, and Reactor Synthesis

2012 ◽  
Vol 10 (1) ◽  
Author(s):  
Majid Sarkari ◽  
Farhad Fazlollahi ◽  
Hossein Atashi
Keyword(s):  
Fixed Bed ◽  
Operating Conditions ◽  
Tropsch Synthesis ◽  
Fixed Bed Reactor ◽  
Fischer Tropsch ◽  
Reaction Conditions ◽  
Fischer Tropsch Synthesis ◽  
Hydrocarbon Chains ◽  
Promoter Effects ◽  
Olefin Selectivity

The effects of K, Ce, Zn, Cs, and Rb promoters on the structure and catalytic behavior of precipitated 50%Fe/50%Mn catalyst in Fischer–Tropsch synthesis (FTS) were investigated in a fixed-bed reactor. The effects of promoter on Fischer-Tropsch iron catalysts caused an increased growth probability of hydrocarbon chains from 0.67 to 0.75 for K to Rb promoter, and the olefin/paraffin ratios increased from 0.99 to 1.36 for Rb to K-promoted catalyst. The effect on the olefin selectivity was certainly due to increased adsorption strength of CO causing an enhanced displacement of olefin. The catalysts were assessed in terms of their FTS activity and product selectivity using Anderson–Schulz–Flory (ASF) models. The effects of various reaction conditions such as flow rates, temperatures, and H2/CO feed ratios were studied and process synthesis concepts were used to investigate interactions between the optimum regions for reactor operation and the experimental results.

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

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.

Effect of CO Conversion on the Product Distribution of a Co/Al2O3 Fischer–Tropsch Synthesis Catalyst Using a Fixed Bed Reactor

2012 ◽  
Vol 142 (11) ◽  
pp. 1382-1387 ◽  
Author(s):  
Dragomir B. Bukur ◽  
Zhendong Pan ◽  
Wenping Ma ◽  
Gary Jacobs ◽  
Burtron H. Davis
Keyword(s):  
Fixed Bed ◽  
Product Distribution ◽  
Tropsch Synthesis ◽  
Fixed Bed Reactor ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Co Conversion

Optimization of forced periodic operations in milli-scale fixed bed reactor for Fischer-Tropsch synthesis

2020 ◽  
Vol 343 ◽  
pp. 156-164
Author(s):  
Nikola Nikačević ◽  
Branislav Todić ◽  
Miloš Mandić ◽  
Menka Petkovska ◽  
Dragomir B. Bukur
Keyword(s):  
Fixed Bed ◽  
Tropsch Synthesis ◽  
Fixed Bed Reactor ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis

Mechanistic Modeling of Cobalt Based Catalyst Sintering in a Fixed Bed Reactor under Different Conditions of Fischer–Tropsch Synthesis

2012 ◽  
Vol 51 (37) ◽  
pp. 11955-11964 ◽  
Author(s):  
Majid Sadeqzadeh ◽  
Jingping Hong ◽  
Pascal Fongarland ◽  
Daniel Curulla-Ferré ◽  
Francis Luck ◽  
...  
Keyword(s):  
Fixed Bed ◽  
Tropsch Synthesis ◽  
Mechanistic Modeling ◽  
Fixed Bed Reactor ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis
Sign in / Sign up

Export Citation Format

Share Document