Pressurized Flammability Limits of selected Sintered Filter Materials in High-Pressure Gaseous Oxygen

2009 ◽  
pp. 119-119-14 ◽  
Author(s):  
JL Schadler ◽  
JM Stoltzfus
Keyword(s):  
High Pressure ◽  
Flammability Limits ◽  
Gaseous Oxygen ◽  
Filter Materials ◽  
Sintered Filter

Premixing rocket engine injectors for high pressure gaseous oxygen and hydrogen

1999 ◽  
Author(s):  
William Knuth ◽  
Daniel Gramer ◽  
Christopher St. Clair
Keyword(s):  
High Pressure ◽  
Rocket Engine ◽  
Gaseous Oxygen

Study of radial burning of holes in titanium shells of high-pressure tanks with oxygen containing gas

2020 ◽  
pp. 92-99
Author(s):  
Nikolay N. TUPITSYN
Keyword(s):  
Experimental Study ◽  
High Pressure ◽  
Hole Size ◽  
Engineering Systems ◽  
Initial Value ◽  
Gaseous Oxygen ◽  
Orifice Area ◽  
Emergency Situations ◽  
Pressure Flows ◽  
Increased Pressure

The paper presents the results of the experimental study of radial burning of holes in titanium samples simulating a fragment of the shell of a high-pressure tank filled with gaseous oxygen or oxygen-containing gas. The tests revealed the possibility of a large increase in the orifice area (140–2 250 times compared with the initial value) as a result of the burning of small through-holes when oxygen-containing gas of the increased pressure flows through them and allowed us to determine the apparent radial burning rate at various oxygen concentrations. The proposed mathematical dependence of the hole size in the titanium shell after their radial burning on the process parameters may be of interest for the analysis of processes occurring in engineering systems in case of some off-nominal and emergency situations. Key words: radial burning of holes, titanium tank, oxygen-containing gas, off-nominal and emergency situations.

Risk Assessment and Field Case Study on Oil/Natural Gas Explosion during High-Pressure Air Injection Process

SPE Journal ◽  
2021 ◽  
pp. 1-14
Author(s):  
Lijuan Huang ◽  
Yu Wang ◽  
Liang Zhang ◽  
Shufeng Pei ◽  
Zhe Zhang ◽  
...  
Keyword(s):  
High Pressure ◽  
Natural Gas ◽  
Necessary Conditions ◽  
Safety Issue ◽  
Fault Tree Analysis ◽  
Air Injection ◽  
Heavy Oils ◽  
Gas Explosion ◽  
Flammability Limits ◽  
Injection Process

Summary Air injection techniques have been widely applied in oil fields, but the associated safety issue of natural gas (NG) and oil explosion has been of great concern. In this study, explosion experiments of different NG compositions were conducted under high-pressure and high-temperature conditions (up to 15 MPa and 373 K) to reveal the necessary conditions for gas explosion in the air injection process. The experimental results indicate that the lower flammability limits (LFLs) and upper flammability limits (UFLs) of NGs change logarithmically with increasing pressure, which can significantly increase the explosion risk. The rise of temperature can also expand the flammability limit range. Based on the mechanisms and necessary conditions for NG and oil component explosion, fault tree analysis (FTA) models for explosion occurring during the air injection process were proposed that can provide valuable guidelines for designing anti-explosion procedures for field applications. Several explosion incidents that have occurred in air injection operations in different oil reservoirs are described, and the explosion mechanisms are analyzed. NG explosion can occur during air injection when NG is the main component present in the gas phase that can mix with air to form a combustible gas. For heavy oils with little NG, autoignited explosion of vaporized oil components can be the main reason for the incidents during the steam and air coinjection process because the autoignition temperature of heavy oil can be greatly reduced at high pressure.

Kinetics and Rate Constants of Reactions Leading to Hydration of and in Gaseous Oxygen, Argon, and Helium Containing Traces of Water

1972 ◽  
Vol 50 (14) ◽  
pp. 2230-2235 ◽  
Author(s):  
J. D. Payzant ◽  
A. J. Cunningham ◽  
P. Kebarle
Keyword(s):  
High Pressure ◽  
Electron Beam ◽  
Gas Phase ◽  
Mass Spectrometer ◽  
Rate Constants ◽  
Gas Phase Reactions ◽  
Third Order ◽  
Gaseous Oxygen ◽  
Time Resolved ◽  
Pulsed Electron Beam

The rate constants for the forward and reverse components of gas phase reactions:[Formula: see text]were measured with a pulsed electron beam, time resolved detection high pressure mass spectrometer at 300 °K. O2, Ar, and He at pressures from 1–7 Torr were used as third gas M. The forward reactions were found to be third order and the reverse reactions second order. Establishment of the equilibria could also be observed.

Ignition of Nonmetallic Materials by Impact of High-Pressure Gaseous Oxygen

2009 ◽  
pp. 218-218-15 ◽  
Author(s):  
GE Moffett ◽  
MD Pedley ◽  
N Schmidt ◽  
RE Williams ◽  
D Hirsch ◽  
...  
Keyword(s):  
High Pressure ◽  
Gaseous Oxygen

Optical Diagnostics in a High-Pressure Combustor with Gaseous Oxygen and Kerosene

2019 ◽  
Vol 35 (1) ◽  
pp. 13-25 ◽  
Author(s):  
Henry C. Balance ◽  
Oleksandr Bibik ◽  
Timothy S. Cook ◽  
Stephen Danczyk ◽  
S. Alexander Schumaker ◽  
...  
Keyword(s):  
High Pressure ◽  
Optical Diagnostics ◽  
Gaseous Oxygen
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