Technical evaluation and optimization of a flare gas recovery system for improving energy efficiency and reducing emissions

2021 ◽  
Vol 236 ◽  
pp. 114076
Author(s):  
Javad Asadi ◽  
Esmaeil Yazdani ◽  
Yasaman Hosseinzadeh Dehaghani ◽  
Pejman Kazempoor
Keyword(s):  
Energy Efficiency ◽  
Gas Recovery ◽  
Recovery System ◽  
Technical Evaluation

Application of Optimal Control Strategy to Converter Gas Recovery System

2012 ◽  
Vol 38 (6) ◽  
pp. 1017 ◽  
Author(s):  
Jia-Yan ZHANG ◽  
Zhong-Hai MA ◽  
Xiao-Bin QIAN ◽  
Shao-Ming LI ◽  
Jia-Hong LANG
Keyword(s):  
Optimal Control ◽  
Control Strategy ◽  
Optimal Control Strategy ◽  
Gas Recovery ◽  
Recovery System ◽  
Converter Gas

scholarly journals Comparative analysis of working fluids for efficient waste heat recovery

2021 ◽  
Vol 2057 (1) ◽  
pp. 012102
Author(s):  
D Ye Lola ◽  
A Yu Chirkov ◽  
Yu A Borisov
Keyword(s):  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Exhaust Gas ◽  
Water Cooling ◽  
Working Fluids ◽  
Gas Recovery ◽  
Recovery System

Abstract The paper analyzes the implementation of plants with an organic Rankine cycle (ORC) on the example of the circuit of the regenerative gas turbine unit and exhaust gas recovery system of the compressor system of the gas-compressor unit. The theoretically achievable values of power generated by the ORC-installations are determined. A criterion is presented for comparing the working fluids according to the efficiency of use in ORC-installations. To evaluate the overall characteristics of the system, the parameters of heat exchangers for air and water cooling were determined. As a result, it is concluded that the use of ORC-installations allows to utilize up to 23% of the heat of exhaust gases (convert into useful work).

Development of a Condensation Refueling Gas Recovery System Based on Turbo Brayton Refrigeration Technique

2014 ◽  
Vol 960-961 ◽  
pp. 595-598 ◽  
Author(s):  
Lian You Xiong ◽  
Wen Hai Lu ◽  
Zhi Yong Huo ◽  
Nan Peng
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Condensation Temperature ◽  
Brayton Cycle ◽  
Recovery Efficiency ◽  
Gas Recovery ◽  
Gasoline Vehicles ◽  
Recovery System ◽  
Volatile Organic ◽  
Cycle Refrigerator

Volatile organic compounds (VOCs) are emitted from the refueling of gasoline vehicles and trucks. Controlling these emissions has been an important issue since the late 2000s in China. We have recently developed a condensation refueling gas recovery system to recover the VOCs from gaseous wastes at a bulk gasoline terminal. In this system VOC vapor is condensed by a reversed turbo-Brayton cycle refrigerator. The recovery system has a capacity of 100 Nm3/hr at the lowest condensation temperature of 190K. It has been put into use since 2008. The achieved recovery efficiency is 96% and the emission of VOCs is less than 8 g/m3 at the exit of the recovery system.

scholarly journals Design and Simulation of Proton Exchange Membrane Fuel Cell Exhaust Gas Recovery System

2020 ◽  
Vol 186 ◽  
pp. 03007
Author(s):  
Long Li ◽  
QianChao Liang ◽  
JianFeng Zhao ◽  
Yang Zhang ◽  
YiFan Liang
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Cell System ◽  
Proton Exchange ◽  
Residual Pressure ◽  
Exhaust Gas ◽  
Gas Recovery ◽  
Recovery System ◽  
Exchange Membrane ◽  
Work Done

The compressed air from high-pressure compressor enters the proton exchange fuel cell and was discharged from the cathode after reacting. This part of the exhaust gas had a certain residual pressure. In order to study the effect of cathode exhaust gas residual pressure recovery on the efficiency of proton exchange membrane fuel cell system, this paper used Simulink software to establish a proton exchange membrane fuel cell exhaust gas recovery system model. In the model, the mass flow of supply air was controlled by controlling the air excess ratio Under this condition, the work done by the exhaust gas on the turbine could account for 18% of the parasitic power consumption. The simulation results showed that this system could increase the system power by up to 13% compared with the energy recovery turbine system, which had good consistency, which was of great significance for PEMFC system design and exhaust gas recovery.

scholarly journals Recovery of waste heat from engines: an AD view

2018 ◽  
Vol 223 ◽  
pp. 01007
Author(s):  
Miguel Cavique ◽  
João Fradinho ◽  
António Gabriel-Santos ◽  
António Mourão ◽  
António Gonçalves-Coelho
Keyword(s):  
Energy Efficiency ◽  
Future Development ◽  
Diesel Engines ◽  
Scientific Community ◽  
Waste Heat ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Kalina Cycle ◽  
Recovery System ◽  
Marine Applications

The Newcomen engine (1705) and the Watt engine (1769) are good examples of coupled and uncoupled designs. The Watt engine had an efficiency of about 3%, a shallow value when compared to engines of nowadays while resulting in a significant increase at those times. According to Axiomatic Design, Watt engine had a better performance than the Newcomen design due to its uncoupled nature. This work aims at applying the same reasoning to choose between new inventions designed for recovering waste heat from engines as to produce work. The most popular of those inventions are the organic Rankine cycle (ORC) and the Kalina cycle. Marine applications use those inventions to improve the efficiency of Diesel engines because the increase of weight of the recovery system does not affect power propulsion. A controversial regarding what system to develop occurred in scientific community as well as in the industry. The application of AD to those cycles classifies ORC as an uncoupled design and the Kalina cycle as a coupled design. Therefore, the ORC might be pondered for future development regarding energy efficiency.

Numerical Analysis of Flare Gas Recovery Ejector

2014 ◽  
Author(s):  
Arihant Sonawat ◽  
Abdus Samad ◽  
Afshin Goharzadeh
Keyword(s):  
Fluid Flow ◽  
Flow Rate ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Gas Industry ◽  
Gas Recovery ◽  
System A ◽  
Primary Fluid ◽  
Recovery System ◽  
Flow Through

Flaring and venting contributes significantly to greenhouse gas emissions and environmental pollution in the upstream oil and gas industry. Present work focuses on a horizontal flow, multiphase ejector used for recovery of these flared gases. The ejector typically handles these gases being entrained by high pressure well head fluid and a comprehensive understanding is necessary to design and operate such recovery system. A CFD based analysis of the flow through the ejector has been reported in this paper. The flow domain was meshed and the mass and momentum equations for fluid flow were solved using commercial software CFX (v14.5). Euler-Euler multiphase approach was used to model different phases. The entrainment behavior of the ejector was investigated and compared for different fluid flow conditions. It was observed that for a fixed primary fluid flow rate, the entrained or secondary flow rate decreased linearly with an increase in pressure difference between exit and suction pressure. The higher was primary flow rate, the greater was the suction created ahead of the primary nozzle and greater was the amount of energy added to the entrained fluid.

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