Study on Deoxidization of Coal-Bed Methane under Low Temperature

2013 ◽  
Vol 805-806 ◽  
pp. 1425-1428
Author(s):  
Rui Jun Jing ◽  
Yong Fa Zhang ◽  
Ying Wang ◽  
Xiang Lan Li
Keyword(s):  
Low Temperature ◽  
Oxygen Content ◽  
Space Velocity ◽  
Coal Bed ◽  
Coal Bed Methane

The deoxidization of coal-bed methane is carried out under low temperature which ranges from 150°C to 200°C. In the three deoxidizers, the deoxidization characteristic of BJ-1 is mainly studied. With the function of BJ-1, oxygen content can be reduced to 1% or less. Moreover, the CBM whose CH4 content is below 30%, can be deoxygenated safely. When the space velocity exceeds 25000h-1, the oxygen content of outlet gas begin to great than 1%. In addition, through the experiment, the initial deoxidization temperature is determined as 160°C.

Denitrification Activities of Mg-Mo-V-Ti Catalysts Prepared by Dipping Method at Low Temperature

2018 ◽  
Vol 913 ◽  
pp. 893-899
Author(s):  
Dong Zhu Ma ◽  
Jian Li ◽  
Ling Zhang ◽  
Peng Guo ◽  
Zi Qiang Wen ◽  
...  
Keyword(s):  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Oxygen Content ◽  
Oxygen Concentration ◽  
Flue Gas ◽  
Catalytic Reduction ◽  
Fixed Bed ◽  
Space Velocity ◽  
Fixed Bed Reactor ◽  
Sulfur Resistance

Mg-Mo-V-Ti catalysts of low temperature denitrification were prepared by dipping method. In order to study the activity of selective catalytic reduction, the catalyst was placed in a fixed bed reactor. Industrial flue gas was simulated with cylinder gas. Results indicate that the 0.1wt% content of MgO catalyst has good performance on denitration activity and sulfur resistance. The effects of oxygen content, space velocity and reaction temperature on the activity of the 0.1MgO-6MoO3-3V2O5-TiO2 wt% catalyst were investigated. With the increase of oxygen concentration, the denitrification efficiency increases when the oxygen concentration is less than 8%. When the oxygen content is greater than 8%, the denitrification efficiency is almost the same. The denitrification efficiency decreases with the increase of space velocity. The removal efficiency of NO 0.1MgO-6MoO3-3V2O5-TiO2 wt% catalyst over increases first and then becomes stable with the increase of temperature, and the conversion efficiency of SO2 is less than or equal to 2.2% at 120~240 °C.

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