Experimental study of nitrogen conversion during char combustion under a pressurized O2/H2O atmosphere

Fuel ◽  
2021 ◽  
pp. 122529
Author(s):  
Chenxi Bai ◽  
Wenda Zhang ◽  
Lihua Deng ◽  
Yijun Zhao ◽  
Shaozeng Sun ◽  
...  
Keyword(s):  
Experimental Study ◽  
Char Combustion ◽  
Nitrogen Conversion

Experimental Study on Biomass Char Combustion in O2/CO2 Atmosphere

2014 ◽  
Vol 694 ◽  
pp. 136-141 ◽  
Author(s):  
Jing Hong Lian ◽  
Zi Fang Wang ◽  
Wei Ji ◽  
Guang Yang ◽  
Lian Sheng Liu ◽  
...  
Keyword(s):  
Experimental Study ◽  
Fixed Bed ◽  
Reactor System ◽  
Fixed Bed Reactor ◽  
No Emission ◽  
Char Combustion ◽  
Biomass Char

Experiments of biomass char combustion in 10%O2/90%CO2, 21%O2/79%CO2, 10%O2/90%N2 and 21%O2/79%N2 atmospheres were performed in the fixed-bed reactor system at the temperature of 800°C-1200°C. The results show that at the same temperature, NO emission is higher in O2/N2 atmosphere than that in O2/CO2 atmosphere. The higher the O2 concentration is, the higher the NO yield is. As the temperature rises, the NO yield rises at first and then decreases at the same O2 concentration and atmosphere.

Experimental Study on Pore Structure and Apparent Kinetic Parameters of Char Combustion in Kinetics-Controlled Regime

2004 ◽  
Vol 18 (5) ◽  
pp. 1562-1568 ◽  
Author(s):  
Qun Chen ◽  
Rong He ◽  
Xuchang Xu ◽  
Zhangang Liang ◽  
Changhe Chen
Keyword(s):  
Experimental Study ◽  
Pore Structure ◽  
Kinetic Parameters ◽  
Char Combustion ◽  
Apparent Kinetic Parameters

Oxy-fuel combustion of a single fuel particle in a fluidized bed: Char combustion characteristics, an experimental study

2016 ◽  
Vol 287 ◽  
pp. 649-656 ◽  
Author(s):  
Changsheng Bu ◽  
David Pallarès ◽  
Xiaoping Chen ◽  
Alberto Gómez-Barea ◽  
Daoyin Liu ◽  
...  
Keyword(s):  
Experimental Study ◽  
Fluidized Bed ◽  
Fuel Combustion ◽  
Combustion Characteristics ◽  
Fuel Particle ◽  
Char Combustion

Experimental Study on SO2 and NOx Removal during Briquette Combustion

2013 ◽  
Vol 634-638 ◽  
pp. 741-745
Author(s):  
Lin Bo Qin ◽  
Jun Han ◽  
Tie Mi ◽  
Long Liu ◽  
Hao Wang ◽  
...  
Keyword(s):  
Experimental Study ◽  
Calcium Carbonate ◽  
Sodium Hydroxide ◽  
Calcium Hydroxide ◽  
Hydrated Lime ◽  
Char Combustion

In this paper, the desulphurization of coals prepared briquettes using lime based products (calcium hydroxide and calcium carbonate) and sodium hydroxide as desulphurizing agents (DSA) was investigated in a vertically integrated experimental furnace. Meanwhile, the effect of sodium hydroxide on the denitrification was also studied. The results indicated that calcium carbonate as a DSA is more efficient for SO2 removal during the char combustion, whereas hydrated lime and NaOH are efficient in both char and volatile combustion. For most of the coals, the desulfurization efficiencies in case of lime hydrated reaches over 80 %, whereas desulfurization efficiencies is below 70% when calcium carbonate is used as DSA. It was also found that NaOH can be used as denitrifying agent as well as desulphurizing agent, and the maximum denitrifying efficiencies by using NaOH denitrifying agents for coal A and coal B are 59% and 54%, respectively.

Experimental study and modelling of char combustion under fluidized bed conditions

1998 ◽  
Vol 7 (4) ◽  
pp. 264-271 ◽  
Author(s):  
Yongzhe Zhang ◽  
Xiangdong Xu ◽  
Manfred C. Wirsum ◽  
Stefan Hamel ◽  
Franz N. Fett
Keyword(s):  
Experimental Study ◽  
Fluidized Bed ◽  
Char Combustion

Experimental study on the restoration from a tilt-azimuth series for improvement in resolution

1995 ◽  
Vol 53 ◽  
pp. 636-637
Author(s):  
Norio Baba ◽  
Norihiko Ichise ◽  
Syunya Watanabe
Keyword(s):  
Experimental Study ◽  
Spherical Aberration ◽  
Incident Beam ◽  
Optical Parameters ◽  
Beam Tilting ◽  
Illumination Method ◽  
Restoration Method ◽  
Illumination Mode

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.

Sign in / Sign up

Export Citation Format

Share Document