Study on associated gas combustion characteristics and inert gas influence rules in air-foam flooding process

Fuel ◽  
2021 ◽  
Vol 302 ◽  
pp. 121140
Author(s):  
Tao Fan ◽  
Mingzhi Li ◽  
Zhenyi Liu ◽  
Yao Zhao ◽  
Yunlong Ma
Keyword(s):  
Combustion Characteristics ◽  
Inert Gas ◽  
Gas Combustion ◽  
Associated Gas ◽  
Foam Flooding

scholarly journals The Role of Investment Associated with the Reduction of the Effects of Environmental Pollution with Gas Decision

2017 ◽  
Vol 1 (3) ◽  
pp. 102-144
Author(s):  
Buthaina Rashid Al Kaabi ◽  
Hanan Ibrahim Mazloum
Keyword(s):  
Social Life ◽  
The State ◽  
Environmental Damage ◽  
State Budget ◽  
Gas Combustion ◽  
Associated Gas ◽  
Healthy Environment ◽  
Economic Significance ◽  
The Social ◽  
Future Situation

gas sector, an important sector in Iraq because of the great economic significance in support of the Iraqi economy and it represents a second fixed with oil to finance the state budget source of income. As well as investment by the lead to reduce the effects of environment polluting due to the accompanying emissions of dangerous toxic gases, gas flaring, which sometimes lead to the death of many people if inhaled and that the aim of the research dealt with knowledge of the environmental impact before making an investment associated gas decision and after the establishment of a project to improve the environment and the extent of impact of the project in the social life and the solution to the problem of the research of the combustion of large amounts of associated gas because of the lack of attention to hold such an important natural resource that generates state many returns and lead to significant financial losses in the event of lack of investment. the gas combustion leads to polluted and unhygienic environment causing disease, cancer of the inhabitants of neighboring areas .oan the practical side of the research dealt with the relationship between investment-associated and its impact gas-decision in the preservation of the environment and that the most important conclusions of the research: the investment-associated gas decision Rashid and that the decision came too late, according to the findings of the research, the this decision adds another supplier of oil in the state budget was burning waste and contribute to the preservation of free burning remnants of a healthy environment, This corresponds to the research : Promote associated gas investment in order to support the state budget an additional financial resource of oil and this is what improves the current and future situation and also reduces the effects of environmental damage.

Combustion Characteristics of Producer Gas in the Stationary Gas Engine

2011 ◽  
Author(s):  
Arnold M. Kim ◽  
James A. Smith ◽  
Jayson R. Wagler ◽  
Darryl D. Baldwin
Keyword(s):  
Performance Test ◽  
Laminar Flame ◽  
Model Development ◽  
Flame Temperature ◽  
Engine Performance ◽  
Combustion Characteristics ◽  
Gas Combustion ◽  
Wide Range ◽  
Test Engine ◽  
Explosive Reaction

Three syngases were selected from customer sites and the engine performance test was conducted on a single cylinder test engine (SCTE) to explore the engine operating limits and investigate the combustion characteristics for the simulation model development. Syngas has a wide range of lambda between the misfire and the detonation compared to conventional natural gas. Combustion of syngas 1 having no CH4 showed unique characteristics which are different from syngas 3. It appears that even a small amount of CH4 in the fuel would be important to lower the rate of the main branching reaction of hydrogen and mitigate the explosive reaction of the hydrogen. Lean operating limit of the tested syngas was observed when LFS (Laminar Flame Speed) and AFT (Adiabatic Flame Temperature) become around 5∼7 cm/s and 1660 ∼ 1720°C.

204 Influences of Inert Gas Additive on the Combustion Characteristics of a DME-HCCI Engine

2006 ◽  
Vol 2006.42 (0) ◽  
pp. 39-40
Author(s):  
Hiroaki NOMURA ◽  
Takuya MUTO ◽  
Sayaka NISHIMI ◽  
Katsuhiro HOSHINA ◽  
Akira IIJIMA ◽  
...  
Keyword(s):  
Combustion Characteristics ◽  
Inert Gas ◽  
Hcci Engine

Pressure rise generated by the expansion of a local gas volume in a closed vessel

2009 ◽  
Vol 465 (2112) ◽  
pp. 3627-3646 ◽  
Author(s):  
Douglas Stamps ◽  
Edward Cooper ◽  
Ryan Egbert ◽  
Steve Heerdink ◽  
Valerie Stringer
Keyword(s):  
Experimental Data ◽  
Heat Capacity ◽  
Volume Fraction ◽  
Pressure Rise ◽  
Initial Pressure ◽  
Inert Gas ◽  
Closed Vessel ◽  
Gas Combustion ◽  
Gas Volume ◽  
Theoretical Results

Experiments were conducted to determine the pressure rise that results from either the combustion of a localized gas volume or the expansion of a pressurized gas volume adjacent to an inert gas in a closed vessel. The experiments consisted of either pressurized air or the combustion of stoichiometric and fuel-lean hydrogen–air mixtures compressing an inert gas. The pressure rise in the inert gas was measured as a function of either the volume fraction or the initial pressure of the expanding gas. Helium, nitrogen, air and carbon dioxide were tested to explore the effect of inert gas heat capacity on the pressure rise. The final pressure of the inert gas increased with the volume fraction and initial pressure of the expanding gas, and was influenced to a lesser extent by the heat capacity of the inert gas. A model was assessed using the experimental data, and the theoretical results were consistent with the observed trends. This model and other published models were assessed and compared using prior data for localized gas combustion surrounded by an inert gas and the partial combustion of homogeneous methane–air mixtures.

JP-8 Combustion Characteristics in a Small Diesel Auxiliary Power Unit

2011 ◽  
Author(s):  
Valentin Soloiu ◽  
April Covington ◽  
Jeffery Lewis ◽  
Jonathan Welch
Keyword(s):  
Diesel Engine ◽  
Heat Losses ◽  
Combustion Characteristics ◽  
Aviation Fuel ◽  
Power Stroke ◽  
Maximum Temperature ◽  
Diffusion Combustion ◽  
Gas Combustion ◽  
Auxiliary Power ◽  
Overall Efficiency

The US Army Single Fuel Forward policy mandates that deployed vehicles must be operable with aviation fuel JP-8. Therefore, an investigation into the influence of JP-8 on a diesel engine’s performance is currently in progress. The injection, combustion, and performance of JP-8, 20–50% by weight in diesel no.2 mixtures (J20-J50) produced at room temperature were investigated in a 77mm indirect injection, high compression ratio (23.5) diesel engine, in order to evaluate its effectiveness for application in Auxiliary Power Units (APUs) at 2000rpm continuous operation (100% load/BMEP 4.78 bar). Due to the viscosity requirements for proper injection the new fuel can contain as high as 100% JP-8 (J100). The blends had an ignition delay of 1.03ms regardless of the amount of JP-8 introduced. J50 and diesel no.2 exhibited similar characteristics of heat release, the premixed phase being combined with the diffusion combustion. The maximum combustion pressure remained relatively constant for all blends, 72.7bar for diesel and decreased slightly by 0.40bar for J50, with the peak pressure position being delayed by 0.5CAD for the J50. The instantaneous volume-averaged gas combustion temperature reached 2162K for diesel versus 2173K for J50; displaying a 1.2CAD delay in the position of the maximum temperature and retaining the higher temperature for a longer duration for J50. The heat flux in the engine cylinder exhibited comparable maximum values for all blends (diesel: 2.12MW/m2, J50: 2.14MW/m2). The cylinder heat losses were at a minimum during combustion before TDC with increased convection losses at TDC for all fuels and the beginning of the power stroke. The heat losses associated with the system increased slightly with the addition of JP-8. The BSFC for diesel no.2 was 242(g/kW/hr) and increasing by only 0.7% for J50. The engine’s mechanical efficiency displayed similar values for all blends, 83% and decreasing by only 1% for J50. Taking into account each fuels’ corresponding density, the engine’s overall efficiency remained relatively constant at 29% with the addition of the JP-8. The engine investigation demonstrated that up to 50% JP-8 by weight in diesel can be injected and burnt in a small diesel engine with a combustion duration of approximately 5ms, while maintaining the engine overall efficiency. The study validates JP-8 as an excellent source for power generation in a diesel APU based on its combustion characteristics. The next stage of research shall be the full emissions investigation.

Study of associated gas components and combustion characteristics based on nitrogen-assisted steam stimulation of heavy oils

Fuel ◽  
2020 ◽  
Vol 282 ◽  
pp. 118819
Author(s):  
Huiting Yan ◽  
Zhenyi Liu ◽  
Jun Zhang ◽  
Fengpu Xiao ◽  
Hai Dong ◽  
...  
Keyword(s):  
Combustion Characteristics ◽  
Heavy Oils ◽  
Associated Gas ◽  
Stimulation Of ◽  
Steam Stimulation
Sign in / Sign up

Export Citation Format

Share Document