scholarly journals Energy Analysis and Remixing Effect of Thermal Coupling Petlyuk Column for Natural Gas Liquid (NGL) Fractionation Train

2021 ◽  
Vol 10 (3) ◽  
pp. 459-469
Author(s):  
Rohani Mohd Zin ◽  
Mohd Ammar Abidin ◽  
Munawar Zaman Shahruddin
Keyword(s):  
Natural Gas ◽  
Energy Saving ◽  
Co2 Emission ◽  
Energy Analysis ◽  
Separation Efficiency ◽  
Thermal Coupling ◽  
Petlyuk Column ◽  
Product Specifications ◽  
Propane Butane

In this work, a non-conventional distillation sequence with thermal coupling (Petlyuk Column) was presented as a technique to perform the separation of the NGL consist of ethane, propane, butane or other higher alkanes. The improvements were investigated through the energy analysis and remixing effect. From the result obtained, it was found that the Petlyuk arrangement consumes less amount of energy and able to reduce the remixing effects as compared to the conventional column sequencing. The Petlyuk arrangement saved about 44.49% and 12.83% in terms of cooling and heating duty, respectively. The overall annual energy saving shown by this arrangement is 39.22%. This arrangement proved to be able to prevent the remixing effect occurrence that contributes to thermal and separation inefficiency. The desired separation efficiency also obtained by this arrangement as all the product specifications are met. The ability in avoiding remixing effect by the Petlyuk column permits a significant reduction in CO2 emission with an average of 29.43 % of each equipment involved. Hence, it can be concluded that the Petlyuk arrangement model is a better alternative to be implemented in the NGL fractionation train.

Energy Saving through Modeling of Integrated Distillation Column (Side-Stripper) in Natural Gas Liquid Processing

2014 ◽  
Vol 699 ◽  
pp. 822-827
Author(s):  
Yasmin Syazwani Yusri ◽  
Rohani Mohd. Zin ◽  
Ruzitah Mohd Salleh
Keyword(s):  
Natural Gas ◽  
Energy Saving ◽  
Production Cost ◽  
Distillation Column ◽  
Energy Analysis ◽  
Operating Cost ◽  
Favourable Result ◽  
Distillation Process ◽  
Distillation Columns ◽  
Propane Butane

In Natural Gas Liquid (NGL) recovery, distillation process is the most common and widely used separation method. The productions of ethane, propane, butane and stabilized condensate are achieved through a series of conventional distillation columns which require massive amount of energy consumption, contributing more than 40% of the overall plant energy thus increasing the operating cost. This work focuses on energy saving in natural gas liquid processing by comparing the integrated side-stripper column with the conventional separation trains at steady state using a commercial simulator, Aspen Plus HYSYS. Energy analysis from the study shows that the integrated column arrangement which implement the side-stripper configuration achieved favourable result as it offers the highest percentage in energy reduction which is up to 68% (for reboiler) and 70% (for condenser). Consequently, this can be linked to the reduction of operating cost for hot and cool duties and trim down the overall production cost for existing NGL recovery plant.

DETONABILITY OF FUEL-AIR MIXTURES IN TERMS OF DEFLAGRATION-TO-DETONATION TRANSITION

2020 ◽  
Author(s):  
S. M. FROLOV ◽  
◽  
V. I. ZVEGINTSEV ◽  
I. O. SHAMSHIN ◽  
M. V. KAZACHENKO ◽  
...  
Keyword(s):  
Natural Gas ◽  
Experimental Method ◽  
Pyrolysis Products ◽  
Ethylene Propylene ◽  
Pulse Detonation ◽  
Detonation Tube ◽  
Standard Pulse ◽  
Detonation Transition ◽  
Run Up ◽  
Propane Butane

A new experimental method for evaluating the detonability of fuel-air mixtures (FAMs) based on measuring the deflagration-to-detonation (DDT) run-up distance and/or time in a standard pulse detonation tube is used to rank gaseous premixed and nonpremixed FAMs by their detonability under substantially identical thermodynamic and gasdynamic conditions. In the experiments, FAMs based on hydrogen, acetylene, ethylene, propylene, propane-butane, n-pentane, and natural gas of various compositions, as well as FAMs based on the gaseous pyrolysis products of polyethylene (PE) and polypropylene (PP) are used: from extremely fuel-lean to extremely fuel-rich at normal temperatures and pressures.

scholarly journals Greenhouse gas and energy analysis of substitute natural gas from biomass for space heat

2012 ◽  
Vol 38 ◽  
pp. 95-101 ◽  
Author(s):  
Johanna Pucker ◽  
Robin Zwart ◽  
Gerfried Jungmeier
Keyword(s):  
Natural Gas ◽  
Greenhouse Gas ◽  
Energy Analysis

Steam reforming of methane, ethane, propane, butane, and natural gas over a rhodium-based catalyst

2009 ◽  
Vol 142 (1-2) ◽  
pp. 42-51 ◽  
Author(s):  
Benjamin T. Schädel ◽  
Matthias Duisberg ◽  
Olaf Deutschmann
Keyword(s):  
Natural Gas ◽  
Steam Reforming ◽  
Steam Reforming Of Methane ◽  
Propane Butane

CFD Investigation of Downhole Natural Gas Separation Efficiency in the Churn Flow Regime

2021 ◽  
Author(s):  
Charles Okafor ◽  
Patrick Verdin ◽  
Phill Hart
Keyword(s):  
Natural Gas ◽  
Flow Regime ◽  
Gas Separation ◽  
Separation Efficiency ◽  
Operating Conditions ◽  
Analytical Models ◽  
Design Stage ◽  
Average Error ◽  
Multiphase Model ◽  
Churn Flow

Abstract Downhole Natural Gas Separation Efficiency (NGSE) is flow regime dependent, and current analytical models in certain conditions lack accuracy. Downhole NGSE was investigated through 3D Computational Fluid Dynamics (CFD) transient simulations for pumping wells in the Churn flow regime. The Volume of Fluid (VOF) multiphase model was considered along with the k – ε turbulence model for most simulations. A mesh independence study was performed, and the final model results validated against experimental data, showing an average error of less than 6 %. Numerical simulation results showed that the steady state assumption used by current mathematical models for churn flow can be inaccurate. Several key parameters affecting the NGSE were identified, and suggestions for key improvements to the widely used mathematical formulations for viscous flow provided. Sensitivity studies were conducted on fluid/geometric parameters and operating conditions, to gain a better understanding of the influence of each parameter on NGSE. These are important results as they equip the ESP engineer with additional knowledge to maximise the NGSE from design stage to pumping operations.

scholarly journals Energy-Saving and CO2-Emissions-Reduction Potential of a Fuel Cell Cogeneration System for Condominiums Based on a Field Survey

Energies ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6611
Author(s):  
Kazui Yoshida ◽  
Hom B. Rijal ◽  
Kazuaki Bohgaki ◽  
Ayako Mikami ◽  
Hiroto Abe
Keyword(s):  
Power Generation ◽  
Energy Consumption ◽  
Fuel Cell ◽  
Energy Saving ◽  
Electric Power ◽  
Water Use ◽  
Co2 Emission ◽  
Contribution Rate ◽  
Electric Power Generation ◽  
Cogeneration System

A residential cogeneration system (CGS) is highlighted because of its efficient energy usage on both the supplier and consumer sides. It generates electricity and heat simultaneously; however, there is insufficient information on the efficiency according to the condition of usage. In this study, we analysed the performance data measured by the home energy management system (HEMS) and the lifestyle data of residents in a condominium of 356 flats where fuel cell CGS was installed in each flat. The electricity generated by CGS contributed to an approximately 12% reduction in primary energy consumption and CO2 emission, and the rate of generation by the CGS in the electric power demand (i.e., contribution rate) was approximately 38%. The electricity generation was mainly affected by the use of electricity up to 4 MWh/household/year. Gas or water use also impacted electric power generation, with water use as the primary factor affecting the contribution rate. Electric power generation changes monthly, mainly based on the water temperature. From these results, we confirmed that a CGS has substantial potential to reduce energy consumption and CO2 emission in condominiums. Thus, it is recommended for installation of fuel cell CGS in existing and new buildings to contribute to the energy-saving target of the Japanese Government in the residential sector.

scholarly journals Criteria, Indicators, and Factors of the Sustainable Energy-Saving Economic Development: The Case of Natural Gas Consumption

Energies ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5999
Author(s):  
Olexandr Yemelyanov ◽  
Anastasiya Symak ◽  
Tetyana Petrushka ◽  
Olena Vovk ◽  
Oksana Ivanytska ◽  
...  
Keyword(s):  
Economic Development ◽  
Natural Gas ◽  
Energy Saving ◽  
Sustainable Energy ◽  
The State ◽  
Resource Saving ◽  
State Economy ◽  
Negative Effect ◽  
Gas Consumption ◽  
Natural Gas Consumption

To solve the contradiction between achieving long-term economic growth and reducing the consumption of certain types of resources, the concept of sustainable resource saving economic development must be put into practice. The purpose of this research is to establish criteria, develop indicators, and identify factors of the sustainable energy-saving economic development, as well as to test the developed theoretical provisions using the example of natural gas consumption by different countries. To achieve this goal, various methods were used, including economic and mathematical modeling, time series analysis, factor analysis, regression analysis, and so on. The criteria were formalized, according to which a certain type of economic development can be attributed to energy saving both at the level of the state economy as a whole and at the level of individual industries and enterprises. It was established that the formalized criteria of the sustainable energy-saving economic development have the form of chains of inequalities, and their application makes it possible to identify the general conditions for ensuring this type of development. The main properties of energy-saving economic development were identified. They include the pace of this development, its potential, balance, permanence, and other characteristics. Indicators that can be used to quantify these characteristics were developed. The factors influencing the scale and time characteristics of sustainable energy-saving economic development at the level of the state economy and that of industries and individual enterprises, were systematized. The dynamics of natural gas consumption in different countries was analyzed. The reasons for the lack of energy-saving natural gas economic development in some countries were identified. A quantitative assessment of the properties of this type of economic development by country was conducted. The influence of some factors on the parameters of the sustainable energy-saving natural gas economic development of countries was analyzed. The existence of a negative effect of the rebound in the consumption of natural gas was established at certain intervals in some countries. The obtained results provide an opportunity to increase the degree of understanding of the complex patterns that underlie the sustainable energy-saving economic development of states, industries, and enterprises. These results can also be used in the development of government programs to stimulate energy conservation.

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