scholarly journals Determination of feasibility and advantages of using additional turbines to reduce energy consumption and CO2 emission of a distillation column

2014 ◽  
Vol 20 (2) ◽  
pp. 273-282
Author(s):  
Apichit Svang-Ariyaskul ◽  
Thanapat Chaireongsirikul
Keyword(s):  
Energy Consumption ◽  
Co2 Emission ◽  
Process Efficiency ◽  
Feed Ratio ◽  
Reflux Ratio ◽  
Test Model ◽  
Key Variables ◽  
Reduce Energy Consumption ◽  
Domestic Electricity

Distillation is a process that consumes an extensive amount of energy and emits an enormous amount of CO2. It is attractive to reduce the energy consumption and CO2 emission for distillation. A new design of distillation is proposed by adding turbines in the vapor process streams before the condenser and after a reboiler to produce domestic electricity. As a result, this new design helps in reducing energy consumption and CO2 emission. The key variables are the distillate to feed ratio and the reflux ratio because they are the direct factors that control the vapor flowrates supplying the turbines. The distillation of an alkane mixture of C4 - C8 commonly found in a petroleum refinery was used as a test model to prove the process feasibility. The energy consumption and CO2 emission of the new process are reduced to 0.93 - 0.96 and 0.89 - 0.90 of the conventional process, respectively. This new design increases process efficiency in terms of second law efficiency by reducing the entropy generation from the conventional distillation at low distillate to feed ratios and reflux ratios. The distillation with additional turbines is promising to reduce energy consumption and CO2 emission and to increase process efficiency.

scholarly journals Energy Efficiency Improvement of Debutanizer Column, for NGL Separation

2021 ◽  
Vol 12 (9) ◽  
pp. 255-260
Author(s):  
Ahmed Ould Brahim ◽  
◽  
Souad Abderafi
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Natural Gas ◽  
Co2 Emission ◽  
Reflux Ratio ◽  
Gas Combustion ◽  
Economic Point ◽  
Head Pressure ◽  
Optimal Values ◽  
Natural Gas Combustion

Compared to other petroleum, the natural gas combustion remains the cleanest and the one showing less CO2 emission. These reasons make the natural gas combustion one of the important issues to study. The separation of NGL is energy intensive. This operation is performed through a series of column including the debutanizer column. The present work is devoted to optimize the energy consumption at the level of the debutanizer column. The response surface technique and deploying a central composite numerical design is followed makes use of available data from a refinery. Using a multiple linear regressions, the optimization method leads us to three reliable models. Each of the three models takes as input the reflux ratio and the head pressure in order to predict the condenser heat duty, the reboiler heat duty and the purity of the produced butane. Suggested mathematical models were validated and their reliability was assessed via a set of statistical analyses. The optimization aims to simultaneously minimize the energy consumption of the condenser and reboiler, and maximize the purity of the ejected Butane. This optimization step allowed us to define the optimal values of reflux ratio and head pressure, with desirability function equal to 99 %. Under the determined optimal values, operating energy and cost of the industrial process were reduced by 38 % and 37 %, respectively, and besides, a high purity of butane was noticed reaching 99 %. From an economic point of view, separation NGL with optimal values of pressure and reflux ratio, may contribute to a decrease of CO2 emission and increases the energy efficiency.

scholarly journals Study on System Frame of China Industry Boilers Energy Efficiency Standards

2018 ◽  
Vol 175 ◽  
pp. 04003
Author(s):  
Ren Liu ◽  
Yuejin Zhao ◽  
Lili Chen ◽  
Haihong Chen
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Co2 Emission ◽  
Central Government ◽  
High Energy ◽  
Industry Standards ◽  
Reduce Energy Consumption ◽  
High Energy Efficiency ◽  
Energy Efficiency Standards

Energy consumption is always concerned by China government, from 11th five years plan, central government and departments are trying to deduce the energy consumption and CO2 emission. Massive energy were consumed by industry boiler that pointed out by investigation of energy in China industry, standards for boilers, specially energy efficiency standards are always considered to be a key approach to reduce energy consumption and promote high energy efficiency technology. From the results of survey, industry boiler energy efficiency standards are indeed useful to reduce energy consume. In this paper, we try to research on China industry boilers energy efficiency standards, based on that we concluded the system of China industry boiler energy efficiency standards, and listed all the index of those energy efficiency standards which force to comply. It is very useful to make everyone to understand China industry boiler, and industry boiler energy efficiency standards.

scholarly journals Determination of optimal dimensions of fixed shadowing systems (pergolas) to reduce energy consumption in buildings in Romania

2018 ◽  
Vol 22 ◽  
pp. 358-363
Author(s):  
Florin Babota ◽  
Daniela Lucia Manea ◽  
Claudiu Aciu ◽  
Constantin Munteanu ◽  
Nicoleta Cobîrzan ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Reduce Energy Consumption

scholarly journals Extraction and determination of flavonoids in Carthamus tinctorius

2018 ◽  
Vol 16 (1) ◽  
pp. 1129-1133 ◽  
Author(s):  
Yubin Ji ◽  
Shizheng Guo ◽  
Bing Wang ◽  
Miao Yu
Keyword(s):  
Energy Consumption ◽  
Chinese Medicine ◽  
Extraction Method ◽  
Carthamus Tinctorius ◽  
Ultrasonic Extraction ◽  
Blue Flower ◽  
Total Flavonoids ◽  
Ultraviolet Spectrophotometry ◽  
Reduce Energy Consumption

AbstractCarthamus tinctorius L. also known as: Acanthopanax safflower, red blue flower, it is the Compositae genus of safflower. The active ingredient of Chinese medicine safflower are flavonoids. In order to optimize the extraction method of total flavonoids, extraction with an ultrasonic extraction method, and ultraviolet spectrophotometry was used to determine the content. The results show that, the content of flavonoids in Carthamus tinctorius was 20.6mg/g. Compared with the traditional methods, the ultrasonic extraction method can shorten extraction time and reduce energy consumption.

Naval Energy Management System

2020 ◽  
Vol 26 (3) ◽  
pp. 20-25
Author(s):  
Laurențiu Bogdan Asalomia ◽  
Gheorghe Samoilescu
Keyword(s):  
Energy Consumption ◽  
Power Systems ◽  
New Technologies ◽  
Integrated Navigation ◽  
Integrated Navigation System ◽  
Efficient Management ◽  
Reduce Energy Consumption ◽  
Energy Efficiency Design Index ◽  
Green Ship

AbstractThe paper analyses the role of control and monitoring of electro-energetic equipment in order to reduce operational costs, increase profits and reduce carbon emissions. The role of SCADA and EcoStruxure Power systems is presented and analysed taking into account the energy consumption and its savings. The paper presents practical and modern solutions to reduce energy consumption by up to 53%, mass by up to 47% and increase the life of the equipment by adjusting the electrical parameters. The Integrated Navigation System has allowed an automatic control and an efficient management. For ships, the implementation of an energy efficiency design index and new technologies was required for the GREEN SHIP project.

The Research of Measuring Approach and Energy Efficiency for Hadoop Periodic Jobs

2015 ◽  
Vol 8 (1) ◽  
pp. 206-210 ◽  
Author(s):  
Yu Junyang ◽  
Hu Zhigang ◽  
Han Yuanyuan
Keyword(s):  
Energy Efficiency ◽  
Cloud Computing ◽  
Energy Consumption ◽  
Energy Saving ◽  
Energy Estimate ◽  
Cloud Platform ◽  
Periodic Tasks ◽  
Current Consumption ◽  
Reduce Energy Consumption

Current consumption of cloud computing has attracted more and more attention of scholars. The research on Hadoop as a cloud platform and its energy consumption has also received considerable attention from scholars. This paper presents a method to measure the energy consumption of jobs that run on Hadoop, and this method is used to measure the effectiveness of the implementation of periodic tasks on the platform of Hadoop. Combining with the current mainstream of energy estimate formula to conduct further analysis, this paper has reached a conclusion as how to reduce energy consumption of Hadoop by adjusting the split size or using appropriate size of workers (servers). Finally, experiments show the effectiveness of these methods as being energy-saving strategies and verify the feasibility of the methods for the measurement of periodic tasks at the same time.

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