Evaluation of the optimal carrier gas flow rate for the carbon nanotubes growth

2013 ◽  
Vol 39 (3) ◽  
pp. 258-261 ◽  
Author(s):  
A. G. Kurenya ◽  
D. V. Gorodetskiy ◽  
V. E. Arkhipov ◽  
A. V. Okotrub
Keyword(s):  
Carbon Nanotubes ◽  
Flow Rate ◽  
Gas Flow ◽  
Gas Flow Rate ◽  
Carrier Gas ◽  
Carrier Gas Flow

scholarly journals Effect of operating parameters on production of bio-oil from fast pyrolysis of maize stalk in bubbling fluidized bed reactor

2016 ◽  
Vol 18 (3) ◽  
pp. 88-96 ◽  
Author(s):  
Najaf Ali ◽  
Mahmood Saleem ◽  
Khurram Shahzad ◽  
Sadiq Hussain ◽  
Arshad Chughtai
Keyword(s):  
Particle Size ◽  
Flow Rate ◽  
Gas Flow ◽  
Fast Pyrolysis ◽  
Superficial Velocity ◽  
Operating Parameters ◽  
Gas Flow Rate ◽  
Carrier Gas ◽  
Bio Oil ◽  
Carrier Gas Flow

Abstract The yield and composition of pyrolysis products depend on the characteristics of feed stock and process operating parameters. Effect of particle size, reaction temperature and carrier gas flow rate on the yield of bio-oil from fast pyrolysis of Pakistani maize stalk was investigated. Pyrolysis experiments were performed at temperature range of 360-540°C, feed particle size of 1-2 mm and carrier gas fl ow rate of 7.0-13.0 m3/h (0.61.1 m/s superficial velocity). Bio-oil yield increased with the increase of temperature followed by a decreasing trend. The maximum yield of bio-oil obtained was 42 wt% at a temperature of 490°C with the particle size of around 1.0 mm and carrier gas flow rate of 11.0 m3/h (0.9 m/s superficial velocity). High temperatures resulted in the higher ratios of char and non-condensable gas.

Effects of reduction of carrier gas flow rate on sevoflurane and isoflurane consumption and costs

1998 ◽  
Vol 12 (1) ◽  
Author(s):  
Satoru Tanaka ◽  
Hideaki Tsuchida ◽  
Hajime Sonoda ◽  
Akiyoshi Namiki
Keyword(s):  
Flow Rate ◽  
Gas Flow ◽  
Gas Flow Rate ◽  
Carrier Gas ◽  
Carrier Gas Flow

Study on CO2 Adsorption on LiOH-Modified Al2O3

2013 ◽  
Vol 284-287 ◽  
pp. 342-346 ◽  
Author(s):  
Young Min Cho ◽  
Young Min Yang ◽  
Duck Shin Park ◽  
Soon Bark Kwon ◽  
Woo Sung Jung ◽  
...  
Keyword(s):  
Flow Rate ◽  
Gas Flow ◽  
Gas Flow Rate ◽  
Carrier Gas ◽  
Adsorption Performance ◽  
Contact Points ◽  
Zeolite 5A ◽  
Inflow Condition ◽  
Diffraction Patterns ◽  
Carrier Gas Flow

LiOH is known to be one of the most efficient CO2adsorbent because it reacts with CO2to form Li2CO3. However, LiOH still suffers from lack of enough hardness for practical use. In this study, various substrates, were modified with LiOH. Their X-ray diffraction patterns were investigated, and LiOH peak was observed from all prepared samples. CO2adsorption capacity of each prepared sample was measured by monitoring CO2concentration change during the adsorption process under constant CO2gas inflow condition. LiOH-modified Al2O3and zeolite 5A showed good CO2adsorption performance, while LiOH-modified AC and SiO2showed relatively poor CO2adsorption. Al2O3and zeolite 5A contains many basic functional groups of Al3+, which promote the neutralization reaction with acidic CO2. The effect of carrier gas, carrier gas flow rate, initial CO2concentration, and amount of LiOH-modified Al2O3loading was investigated. CO2 adsorption performance was better when the carrier gas was N2, because O2competes with CO2on LiOH. CO2adsorption performance was better with lower carrier gas flow rate, lower initial CO2concentration, and less loading of adsorbent due to the increase of contact time and contact points.

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