Gas Flow Rate and Temperature Dependence of the Kinetics of Difluoromethane Clathrate Hydrate Formation from CF2H2 Gas and Ice Particles

2016 ◽  
Vol 120 (16) ◽  
pp. 8482-8489 ◽  
Author(s):  
Michael T. Nguyen ◽  
Jaruwan Amtawong ◽  
Karena Smoll ◽  
Andrew Chanez ◽  
Michael Yamano ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Flow Rate ◽  
Gas Flow ◽  
Hydrate Formation ◽  
Clathrate Hydrate ◽  
Gas Flow Rate ◽  
Ice Particles ◽  
Kinetics Of

The effect of gas flow rate on the oxidation kinetics of zirconium

1969 ◽  
Vol 3 (6) ◽  
pp. 377-380 ◽  
Author(s):  
L.P. Srivastava ◽  
T.F. Archbold
Keyword(s):  
Flow Rate ◽  
Oxidation Kinetics ◽  
Gas Flow ◽  
Gas Flow Rate ◽  
Kinetics Of

Kinetics of Trifluoromethane Clathrate Hydrate Formation from CHF3 Gas and Ice Particles

2017 ◽  
Vol 121 (38) ◽  
pp. 7089-7098 ◽  
Author(s):  
Jaruwan Amtawong ◽  
Suvrajit Sengupta ◽  
Michael T. Nguyen ◽  
Nicole C. Carrejo ◽  
Jin Guo ◽  
...  
Keyword(s):  
Hydrate Formation ◽  
Clathrate Hydrate ◽  
Ice Particles ◽  
Kinetics Of

The theory of injection of a hydrate-forming gas into a snow massif saturated with the same gas

2018 ◽  
Vol 13 (4) ◽  
pp. 92-98 ◽  
Author(s):  
A.S. Chiglintseva ◽  
V.Sh. Shagapov
Keyword(s):  
Flow Rate ◽  
Gas Flow ◽  
Gas Injection ◽  
Hydrate Formation ◽  
Temperature Fields ◽  
Gas Flow Rate ◽  
Initial State ◽  
Gas Hydrate Formation ◽  
Temperature And Pressure ◽  
The Mathematical Model

The mathematical model of the process of gas hydrate formation during gas injection into a snow massif, saturated with the same gas, is constructed. In axisymmetric formulation, analytical solutions are obtained for the distribution of temperature fields, pressures and phase saturations. It is shown that the appearance of various characteristic zones in a snow massif depends on the initial state of the gas–snow system, determined by temperature and pressure, and the mass flow rate of the injected gas. It has been established that an increase in the intensity of gas injection (gas flow rate) leads to an increase in both the length of the bulk zone of hydrate formation and the increase in the fraction of hydrate at the boundary separating the near and intermediate zones.

scholarly journals Effect of Gas Flow Rate on Hydrate Formation Within the Hydrate Stability Zone

2018 ◽  
Vol 123 (8) ◽  
pp. 6263-6276 ◽  
Author(s):  
Dylan W. Meyer ◽  
Peter B. Flemings ◽  
David DiCarlo
Keyword(s):  
Flow Rate ◽  
Gas Flow ◽  
Hydrate Formation ◽  
Stability Zone ◽  
Gas Flow Rate ◽  
Hydrate Stability

SCIENTIFIC AND ENGINEERING PRINCIPLES OF EFFICIENT FUEL USE AND ENVIRONMENTALLY FRIENDLY GAS COMBUSTION IN STOVE PLATES. PART 1. MODERN STATE-OF-THE-ART AND DIRECTIONS FOR IMPROVEMENT THE GAS BURNING IN DOMESTIC GAS COOKERS

2017 ◽  
pp. 3-18 ◽  
Author(s):  
B.S. Soroka ◽  
V.V. Horupa
Keyword(s):  
Natural Gas ◽  
Flow Rate ◽  
Gas Flow ◽  
Renewable Energy Sources ◽  
Combustion Process ◽  
Orifice Diameter ◽  
Firing Process ◽  
Gas Flow Rate ◽  
Gas Combustion ◽  
Gas Stoves

Natural gas NG consumption in industry and energy of Ukraine, in recent years falls down as a result of the crisis in the country’s economy, to a certain extent due to the introduction of renewable energy sources along with alternative technologies, while in the utility sector the consumption of fuel gas flow rate enhancing because of an increase the number of consumers. The natural gas is mostly using by domestic purpose for heating of premises and for cooking. These items of the gas utilization in Ukraine are already exceeding the NG consumption in industry. Cooking is proceeding directly in the living quarters, those usually do not meet the requirements of the Ukrainian norms DBN for the ventilation procedures. NG use in household gas stoves is of great importance from the standpoint of controlling the emissions of harmful components of combustion products along with maintenance the satisfactory energy efficiency characteristics of NG using. The main environment pollutants when burning the natural gas in gas stoves are including the nitrogen oxides NOx (to a greater extent — highly toxic NO2 component), carbon oxide CO, formaldehyde CH2O as well as hydrocarbons (unburned UHC and polyaromatic PAH). An overview of environmental documents to control CO and NOx emissions in comparison with the proper norms by USA, EU, Russian Federation, Australia and China, has been completed. The modern designs of the burners for gas stoves are considered along with defining the main characteristics: heat power, the natural gas flow rate, diameter of gas orifice, diameter and spacing the firing openings and other parameters. The modern physical and chemical principles of gas combustion by means of atmospheric ejection burners of gas cookers have been analyzed from the standpoints of combustion process stabilization and of ensuring the stability of flares. Among the factors of the firing process destabilization within the framework of analysis above mentioned, the following forms of unstable combustion/flame unstabilities have been considered: flashback, blow out or flame lifting, and the appearance of flame yellow tips. Bibl. 37, Fig. 11, Tab. 7.

On the Influence of Fluctuating Flow Rate Upon the Performance and Behaviour of Isothermal Reacting Systems

1998 ◽  
Vol 63 (6) ◽  
pp. 881-898
Author(s):  
Otakar Trnka ◽  
Miloslav Hartman
Keyword(s):  
Flow Rate ◽  
Gas Flow ◽  
Fluidized Bed Reactor ◽  
Computational Techniques ◽  
Continuous Stirred Tank Reactor ◽  
Gas Flow Rate ◽  
Solid Reaction ◽  
Continuous Stirred Tank ◽  
And Performance ◽  
Reacting Systems

Three simple computational techniques are proposed and employed to demonstrate the effect of fluctuating flow rate of feed on the behaviour and performance of an isothermal, continuous stirred tank reactor (CSTR). A fluidized bed reactor (FBR), in which a non-catalytic gas-solid reaction occurs, is also considered. The influence of amplitude and frequency of gas flow rate fluctuations on reactant concentrations at the exit of the CSTR is shown in four different situations.

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