Methane Emissions Reduction in Liquefied Natural Gas Off-Loading Process in Refueling Stations

2019 ◽  
Author(s):  
Amir Sharafian ◽  
Paul Blomerus ◽  
Walter Mérida
Keyword(s):  
Natural Gas ◽  
Greenhouse Gas ◽  
Methane Emissions ◽  
Liquefied Natural Gas ◽  
Process Time ◽  
Emissions Reduction ◽  
Pressure Buildup ◽  
Tanker Truck ◽  
Main Component ◽  
The Impact

Abstract Recent research into methane emissions from the liquefied natural gas (LNG) supply chain has revealed uncertainty in the overall greenhouse gas emissions reduction associated with the use of LNG in heavy-duty vehicles. Methane is the main component of natural gas and a potent greenhouse gas. This study investigates the impact of five methods used to offload LNG from a tanker truck to an LNG refueling station and estimate the amount of fugitive methane emissions. The LNG offloading process time, and the final pressures of the tanker truck and refueling station are considered to evaluate the performance of the LNG offloading methods. The modeling results show that the LNG transfer by using a pressure buildup unit has a limited operating range and can increase methane emissions by 10.4% of LNG offloaded from the tanker truck. The results indicate that the LNG transfer by using a pump and an auxiliary pressure buildup unit without vapor return provides the shortest fuel offloading time with the lowest risk of venting methane to the atmosphere.

scholarly journals Modelling the Impact of Energy Subsidies Reform in the Republic of Moldova

Economica ◽  
2021 ◽  
Author(s):  
Mihail Roscovan ◽  
Keyword(s):  
Natural Gas ◽  
Greenhouse Gas ◽  
Equilibrium Model ◽  
Value Added ◽  
Partial Equilibrium ◽  
Energy Subsidies ◽  
Republic Of Moldova ◽  
Partial Equilibrium Model ◽  
The Republic ◽  
The Impact

This article presents the methodology and results of modelling for the analysis on energy affordability and assessing the impact of a possible value added tax increase on the affordability of households to consume adequate levels of natural gas, electricity and heat. The analysis of the reform impact of the subsidy schemes is based on a partial equilibrium model which measures the impact of reforms on energy affordability of different householder groups and budgetary revenue and expenditure, but also on greenhouse gas emissions. Using of targeted social policies generates a budget surplus that can be allocated to energy

Liquefied Natural Gas Tanker Truck Explosion

2016 ◽  
pp. 847-848
Author(s):  
Nawfal Aljerian ◽  
Rakan S. Al-Rasheed
Keyword(s):  
Natural Gas ◽  
Liquefied Natural Gas ◽  
Tanker Truck

scholarly journals Achieving Carbon Neutrality for A Future Large Greenhouse Gas Emitter in Quebec, Canada: A Case Study

Atmosphere ◽  
2020 ◽  
Vol 11 (8) ◽  
pp. 810
Author(s):  
Patrick Faubert ◽  
Sylvie Bouchard ◽  
Rémi Morin Chassé ◽  
Hélène Côté ◽  
Pierre-Luc Dessureault ◽  
...  
Keyword(s):  
Natural Gas ◽  
Literature Review ◽  
Greenhouse Gas ◽  
Paris Agreement ◽  
Liquefied Natural Gas ◽  
Potential Solution ◽  
Carbon Neutrality ◽  
Net Zero ◽  
Zero Carbon

To reach the Paris Agreement targets of holding the global temperature increase below 2 °C above the preindustrial levels, every human activity will need to be carbon neutral by 2050. Feasible means for industries to achieve carbon neutrality must be developed and assessed economically. Herein we present a case study on available solutions to achieve net-zero carbon from the get-go for a planned liquefied natural gas (LNG) plant in Quebec, which would classify as a large Canadian greenhouse gas (GHG) emitter. From a literature review, available options were prioritized with the promoter. Each prioritized potential solution is discussed in light of its feasibility and the associated economic opportunities and challenges. Although net-zero carbon is feasible from the get-go, results show that the promoter should identify opportunities to reduce as much as possible emissions at source, cooperate with other industries for CO2 capture and utilization, replace natural gas from fossil sources by renewable sources and offset the remaining emissions by planting trees and/or buying offsets on the compliance and voluntary markets. As some of these solutions are still to be developed, to ensure timely net-zero pledge for the lifespan of the LNG plant, a portfolio and progressive approach to combine offsets and other options is preferable.

scholarly journals Semi-analytical models of hydroelastic sloshing impact in tanks of liquefied natural gas vessels

2011 ◽  
Vol 369 (1947) ◽  
pp. 2920-2941 ◽  
Author(s):  
I. Ten ◽  
Š. Malenica ◽  
A. Korobkin
Keyword(s):  
Natural Gas ◽  
State Of The Art ◽  
Liquefied Natural Gas ◽  
Analytical Models ◽  
Structural Behaviour ◽  
Hydrodynamic Models ◽  
Basic Principles ◽  
Structural Part ◽  
The Impact ◽  
Violent Sloshing

The present paper deals with the methods for the evaluation of the hydroelastic interactions that appear during the violent sloshing impacts inside the tanks of liquefied natural gas carriers. The complexity of both the fluid flow and the structural behaviour (containment system and ship structure) does not allow for a fully consistent direct approach according to the present state of the art. Several simplifications are thus necessary in order to isolate the most dominant physical aspects and to treat them properly. In this paper, choice was made of semi-analytical modelling for the hydrodynamic part and finite-element modelling for the structural part. Depending on the impact type, different hydrodynamic models are proposed, and the basic principles of hydroelastic coupling are clearly described and validated with respect to the accuracy and convergence of the numerical results.

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