Temperature profile during the drying of anhydrous lactose in a square fixed bed dryer

2018 ◽  
Vol 11 (76) ◽  
pp. 3765-3770
Author(s):  
Luis Obregon Quinones ◽  
Guillermo Valencia Ochoa ◽  
Jorge Duarte Forero
Keyword(s):  
Temperature Profile ◽  
Fixed Bed ◽  
Anhydrous Lactose

Effect of the operating conditions in the drying of anhydrous lactose in a square fixed bed dryer

2018 ◽  
Vol 11 (74) ◽  
pp. 3681-3688
Author(s):  
Luis Obregon Quinones ◽  
Guillermo Valencia Ochoa ◽  
Jorge Duarte Forero
Keyword(s):  
Fixed Bed ◽  
Operating Conditions ◽  
Anhydrous Lactose

Tri-Reforming of Methane over Pt Modified Ni/MgO Catalysts under Atmospheric Pressure – Thermal Distribution in the Catalyst Bed

2012 ◽  
Vol 252 ◽  
pp. 255-258 ◽  
Author(s):  
Hong Tao Jiang ◽  
Hui Quan Li ◽  
Hao Fan
Keyword(s):  
Temperature Profile ◽  
Atmospheric Pressure ◽  
Preparation Method ◽  
Fixed Bed ◽  
Space Velocity ◽  
Methane Reforming ◽  
Thermal Distribution ◽  
Sequence Method ◽  
Catalysts Preparation

Thermal distribution in catalyst bed was investigated for the fixed-bed tri-reforming of methane over Pt modified Ni/MgO catalysts under atmospheric pressure, 850 °C, and space velocity of 2000−20000 h−1. The effects of the W/F on the thermal distribution of different catalysts were examined. The results indicated that for Pt modified Ni/MgO catalysts, the temperature profile depended on catalysts preparation method. According to the thermal distribution, for Pt modified Ni/MgO catalysts prepared by sequence method, the catalyst bed can be divided into tow zones: auto-thermo reforming zone and oxygen absent zone. Methane reforming proceeds in both zones together.

scholarly journals Dry Reforming of Methane at High Pressure in a Fixed-Bed Reactor with Axial Temperature Profile Determination

2018 ◽  
Vol 148 (8) ◽  
pp. 2256-2262 ◽  
Author(s):  
Lukas Tillmann ◽  
Jonas Schulwitz ◽  
André van Veen ◽  
Martin Muhler
Keyword(s):  
High Pressure ◽  
Temperature Profile ◽  
Fixed Bed ◽  
Dry Reforming ◽  
Fixed Bed Reactor ◽  
Dry Reforming Of Methane ◽  
Axial Temperature

Modeling the microbial growth and temperature profile in a fixed-bed bioreactor

2014 ◽  
Vol 37 (10) ◽  
pp. 1945-1954 ◽  
Author(s):  
Christian L. da Silveira ◽  
Marcio A. Mazutti ◽  
Nina P. G. Salau
Keyword(s):  
Temperature Profile ◽  
Microbial Growth ◽  
Fixed Bed ◽  
Fixed Bed Bioreactor

Heat Transfer in Packed Bed Elliptic-Cylindrical Reactor: The Geometry Effect

2019 ◽  
Vol 391 ◽  
pp. 54-59 ◽  
Author(s):  
R. Moura da Silva ◽  
A. Santos Pereira ◽  
A.G. Barbosa de Lima ◽  
Morgana Vasconcellos Araújo ◽  
R.S. Santos
Keyword(s):  
Heat Transfer ◽  
Aspect Ratio ◽  
Temperature Profile ◽  
Fixed Bed ◽  
Three Dimensional ◽  
Packed Bed ◽  
Dimensionless Temperature ◽  
Variable Porosity ◽  
Cylindrical Reactor ◽  
Half Axis

This work aims to develop a transient three-dimensional mathematical model to predict the temperature distribution in a fixed-bed elliptical cylindrical reactor to different geometric aspect ratio (L2/L1=1.5, 2.0 and 3.0). The model considers variable thermo-physical properties, a flat temperature profile at the fluid inlet, as well as a variable porosity model. The governing equation is solved using the finite volume method, coupled with WUDS interpolation scheme and fully implicit method. Results of the temperature profile along the reactor are presented and discussed at different times. As results, it was found that the maximum rate of heat transfer within the reactor occurs near the minor half-axis region of the ellipse (cross-section area of the reactor) and it intensifies over time and that the dimensionless temperature profile is practically unchanged with the aspect ratio.

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