A kinetic study of gaseous potassium capture by coal minerals in a high temperature fixed-bed reactor

Fuel ◽  
2008 ◽  
Vol 87 (15-16) ◽  
pp. 3304-3312 ◽  
Author(s):  
Yuanjing Zheng ◽  
Peter Arendt Jensen ◽  
Anker Degn Jensen
Keyword(s):  
High Temperature ◽  
Kinetic Study ◽  
Fixed Bed ◽  
Fixed Bed Reactor

scholarly journals High‐Pressure High‐Temperature Transparent Fixed‐Bed Reactor for Operando Gas‐Liquid Reaction Follow‐up

2019 ◽  
Vol 42 (3) ◽  
pp. 655-660 ◽  
Author(s):  
Marisa De Sousa Duarte ◽  
Matthieu Rolland ◽  
Corinne Sagnard ◽  
Didier Suire ◽  
Frederic Flacher ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Liquid Reaction ◽  
High Pressure High Temperature

The Mo Loading Effect on SCR deNOx Performance for V-W-Mo/TiO2 Catalyst

2012 ◽  
Vol 229-231 ◽  
pp. 126-129 ◽  
Author(s):  
Yan Gao ◽  
Tao Luan ◽  
Tao Lv ◽  
Hong Ming Xu
Keyword(s):  
High Temperature ◽  
Fixed Bed ◽  
Catalytic Efficiency ◽  
Fixed Bed Reactor ◽  
Exhaust Gas ◽  
Impregnation Method ◽  
Gas Composition ◽  
Loading Effect ◽  
Tio2 Catalyst ◽  
Temperature Window

The V(1)-W(4.5)-Mo(x)/TiO2 catalysts was prepared by the incipient dry impregnation method. The catalyst samples were ground and sieved for 0.3~0.6 mm. The NO catalytic efficiency, selectivity against N2O of the catalysts were investigated on a fixed bed reactor under simulated exhaust gas with a typical gas composition. The addition of Mo enhanced the catalytic efficiency of V(1)-W(4.5)-Mo(x)/TiO2 catalysts at low temperature region, while lessened that at high temperature, especially at the temperature above 400 °C. Increasing the loading of Mo from 1.5% w/w to 4.5% w/w advanced the maximum catalytic efficiency from 78% to 99% and enlarged the temperature window of the catalyst. The acceptable NO conversion (>60%) was attained at temperature as low as 240 °C for V(1)-W(4.5)-Mo(7.5)/TiO2 catalyst. The presence of Mo promoted the N2O generation. The V(1)-W(4.5)-Mo(0)/TiO2 catalyst showed higher catalytic selectivity for NO compared to the catalysts loading Mo.

The W Loading Effect on SCR deNOx Performance for V-W-Mo/TiO2 Catalyst

2013 ◽  
Vol 774-776 ◽  
pp. 743-746 ◽  
Author(s):  
Ji Wei Peng ◽  
Tao Luan ◽  
Yan Gao
Keyword(s):  
High Temperature ◽  
Fixed Bed ◽  
Catalytic Efficiency ◽  
Fixed Bed Reactor ◽  
Exhaust Gas ◽  
Gas Composition ◽  
High Temperature Region ◽  
Loading Effect ◽  
Scr Catalysts ◽  
Temperature Window

The SCR catalysts were produced with V2O5, WO3, MoO3and anatase type TiO2. The catalyst samples were ground and sieved for 0.3~0.6mm.The NO catalytic efficiency, selectivity against N2O of the catalysts were investigated on a fixed bed reactor under simulated exhaust gas with a typical gas composition. The addition of W enhanced the catalytic efficiency of V(1)-W(x)-Mo (4.5)/TiO2catalysts at high temperature region, while lessened that at low temperature. Increasing the loading of W from 1.5% w/w to 4.5% w/w advanced the maximum catalytic efficiency from 88% to 99% and enlarged the temperature window of the catalyst. The presence of W promoted the N2O generation. The V(1)-W(4.5)-Mo (4.5)/TiO2catalyst showed higher catalytic selectivity for NO compared to the catalysts loading W.

High-Temperature HCl Removal with Sorbents in a Fixed-Bed Reactor

2003 ◽  
Vol 17 (4) ◽  
pp. 874-878 ◽  
Author(s):  
Binlin Dou ◽  
Jinsheng Gao ◽  
Seung Wook Baek ◽  
Xingzhong Sha
Keyword(s):  
High Temperature ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Hcl Removal

Modelling of performance of zinc ferrites as high-temperature desulfurizing sorbents in a fixed-bed reactor

Fuel ◽  
1997 ◽  
Vol 76 (7) ◽  
pp. 567-573 ◽  
Author(s):  
Miguel Pineda ◽  
JoséM. Palacios ◽  
Enrique García ◽  
Cristina Cilleruelo ◽  
JoséV. Ibarra
Keyword(s):  
High Temperature ◽  
Fixed Bed ◽  
Fixed Bed Reactor

High Temperature CO2 Capture by Regenerable Calcium Aluminates Carbonates Sorbents

2013 ◽  
Vol 779-780 ◽  
pp. 56-59
Author(s):  
Ching Tsung Yu ◽  
Han Wen Cheng ◽  
Wei Chin Chen
Keyword(s):  
High Temperature ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Economic Consideration ◽  
Excellent Performance ◽  
Calcium Aluminates ◽  
Efficient Route ◽  
The Stability ◽  
Aqueous Conditions ◽  
Reactive Mechanism

The calcium aluminates carbonates are prepared as mediumhigh temperature CO2 sorbents. The sorbent exhibited excellent performance with 53 wt% capacity and 99% stability in TGA test for 15 h. However, using the sorbent in a fixed-bed reactor, it was found that the stability rapidly decreased to about 35% after 10 cycles. Hence, development of regeneration methods for reusing this spent sorbents is critical to economic consideration toward CO2 capture technology. The calcium aluminates carbonates sorbent makes up layered structure including cations formation (Ca2+, Al3+) and lamella anions (CO32-, OH), which can be re-constructed under aqueous conditions. Aqueous hydrolysis provides an efficient route to reactive sorbent. The results showed that CO2 capacity could be recovered to around 50 wt% with 98% stability in TGA test for 15 h for spent sorbents. The reactive mechanism of sorbent is worthy to further discussing.

Sign in / Sign up

Export Citation Format

Share Document