Fixed Bed Reactor Design for an Iron Oxide Sulfur Removal System

1977 ◽  
Vol 16 (2) ◽  
pp. 215-219 ◽  
Author(s):  
David F. Ciliberti ◽  
Brian W. Lancaster
Keyword(s):  
Iron Oxide ◽  
Fixed Bed ◽  
Sulfur Removal ◽  
Reactor Design ◽  
Fixed Bed Reactor ◽  
Removal System

2D flow fields in fixed-bed reactor design: a robust methodology for continuum models

2019 ◽  
Vol 208 ◽  
pp. 115137 ◽  
Author(s):  
Philipp J. Donaubauer ◽  
Leonhard Schmalhorst ◽  
Olaf Hinrichsen
Keyword(s):  
Fixed Bed ◽  
Reactor Design ◽  
Flow Fields ◽  
Fixed Bed Reactor ◽  
Continuum Models ◽  
2D Flow

scholarly journals Fundamental principles of laboratory fixed bed reactor design

2016 ◽  
Vol 13 ◽  
pp. 1-9 ◽  
Author(s):  
Daniel A Hickman ◽  
John C Degenstein ◽  
Fabio H Ribeiro
Keyword(s):  
Fixed Bed ◽  
Reactor Design ◽  
Fixed Bed Reactor

Role of adsorbate interactions in fixed bed reactor design with multicomponent chemisorption

1991 ◽  
Vol 30 (9) ◽  
pp. 2066-2074
Author(s):  
Asha S. Datar ◽  
Sudarshan D. Prasad ◽  
Lakshmangudi K. Doraiswamy
Keyword(s):  
Fixed Bed ◽  
Reactor Design ◽  
Fixed Bed Reactor

Fixed-bed reactor design for self-inhibitory substrates

1991 ◽  
Vol 47 (2) ◽  
pp. B11-B21 ◽  
Author(s):  
Moshe Sheintuch ◽  
Adriana Wolffberg
Keyword(s):  
Fixed Bed ◽  
Reactor Design ◽  
Fixed Bed Reactor

Regeneration of Iron Oxide Sorbent Used for Hot Gas Desulfurization

2011 ◽  
Vol 396-398 ◽  
pp. 1170-1173
Author(s):  
Hui Ling Fan ◽  
Hong Sheng Guo ◽  
Li Tong Liang ◽  
Fang Shen ◽  
Jian Ying Lin ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Red Mud ◽  
Fixed Bed ◽  
Experimental Results ◽  
Fixed Bed Reactor ◽  
Gas Composition ◽  
Hot Gas ◽  
Regeneration Condition ◽  
Hot Gas Desulfurization

Iron oxide sorbent was prepared from red mud and the regeneration behaviors were investigated in a fixed bed reactor. Regeneration parameters including temperature and concentration of oxygen have been considered in order to obtain a suitable regeneration condition. XRD and SEM techniques were used to characterize the fresh and regenerated sorbents. The experimental results show that the sulfided sorbent could be regenerated efficiently using a gas composition of 2% O2-15% H2O- balance N2, at the temperature of 700 °C.

Effect of Mo and Ce Additives on Redox Behavior for Hydrogen Storage and Release of Iron Oxide Mediums

2012 ◽  
Vol 554-556 ◽  
pp. 616-619
Author(s):  
Young Ho Kim ◽  
Eun Jee Kang ◽  
Su Gyung Lee ◽  
Hyo Sub Kim ◽  
Chu Sik Park
Keyword(s):  
Iron Oxide ◽  
Hydrogen Storage ◽  
Water Splitting ◽  
Atmospheric Pressure ◽  
Hydrogen Reduction ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Redox Behavior ◽  
Good Material ◽  
Reduction And Oxidation

The hydrogen reduction and water-splitting oxidation for hydrogen storage and release on the iron oxide mediums with Ce, Mo or Ce-Mo additives were carried out using a fixed bed reactor at atmospheric pressure. A sole Ce additive was an outstanding material for the improvement of the reactivity in the reduction and oxidation of iron oxide medium, even though the medium with Ce was easily deactivated during repeated cyclic reactions due to sintering. A sole Mo additive was a good material for the improvement for the durability. In the mediums with the Ce-Mo additives, therefore, the degree of deactivation and the reactivity of the mediums were gradually decreased with the increase of the amount of Mo. Among the iron oxide mediums with Ce-Mo additives, a FeCeMo-5 medium exhibited the good durability while the maintaining the considerable reactivity during the cyclic reactions.

Product Distribution and Sulfur Migration in Rubber Pyrolysis

2013 ◽  
Vol 712-715 ◽  
pp. 119-123
Author(s):  
Long Guo ◽  
De Min He ◽  
Jun Guan ◽  
Qiu Min Zhang
Keyword(s):  
Heating Temperature ◽  
Fixed Bed ◽  
Sulfur Removal ◽  
Total Content ◽  
Product Distribution ◽  
Hydrogenation Reaction ◽  
Fixed Bed Reactor ◽  
Water Yield ◽  
Pyrolysis Gas ◽  
Vulcanized Rubber

Pyrolysis of vulcanized rubber (VR) with high total sulfur was carried out in the fixed-bed reactor. The effect of heating temperature and on the formation and distrubtion of tar, gas and char and sulfide in pyrolysis products were investigated.The maximal tar yield can reach 55.79% (wt,dry), water yield 1.30% (wt,dry). With increase in temperature, sulfur in char decreases and more sulfur migrates into gases and sulfur removal varies from 66.08% to 77.39 %, and the contents of H2S, CS2and COS increase. Comparing with COS and CS2, the content of H2S is overwhelming, since sulfur radicals from crack of VR is easier for hydrogenation reaction to produce H2S. GC-FPD (Flame Photometric Detector) was used to determine the sulfides in tar. The result indicates sulfides in tar are mainly present in form of sulfides with aromatic group. When temperature grows, sulfur transfers into pyrolysis gas instead of char and total content of detected sulfides in tar rises and then declines.

scholarly journals Effects of the Limestone Particle Size on the Sulfation Reactivity at Low SO2 Concentrations Using a LC-TGA

Materials ◽  
2019 ◽  
Vol 12 (9) ◽  
pp. 1496 ◽  
Author(s):  
Runxia Cai ◽  
Yiqun Huang ◽  
Yiran Li ◽  
Yuxin Wu ◽  
Hai Zhang ◽  
...  
Keyword(s):  
Particle Size ◽  
Reaction Rate ◽  
Fixed Bed ◽  
Sulfur Removal ◽  
Experimental Results ◽  
Fixed Bed Reactor ◽  
Model Parameters ◽  
Particle Sizes ◽  
Fluidized Bed Combustion ◽  
Wide Range

Limestone particle size has a crucial influence on SO2 capture efficiency, however there are few studies on the sulfation reactivity, which covers a broad range of particle sizes at low SO2 concentrations. In this paper, a large-capacity thermogravimetric analyzer (LC-TGA) was developed to obtain the sulfur removal reaction rate under a wide range of particle sizes (3 μm–600 μm) and SO2 concentrations (250 ppm–2000 ppm), and then compared with the results of a traditional fixed bed reactor and a commercial TGA. The experimental results showed that the LC-TGA can well eliminate the external mass transfer and obtain a better measurement performance. Both the final conversion and the reaction rate reduced with the decreasing of SO2 concentration, but ultrafine limestone particles still showed the good sulfation reactivity even at 250 ppm SO2. An empirical sulfation model was established based on the experimental results, which can well predict the sulfation process of different limestone particle sizes at low SO2 concentrations. The model parameters have a strong negative correlation against the particle size, and the fit of the reaction order of SO2 was found to be about 0.6. The model form is very simple to incorporate it into available fluidized bed combustion models to predict SO2 emission.

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