Evaluation of the cryogenic helium recovery process from natural gas based on flash separation by advanced exergy cost method – Linde modified process

Ansarinasab, Hojat; Mehrpooya, Mehdi; Parivazh, Mohammad Mehdi

doi:10.1016/j.cryogenics.2017.08.005

Cited by 29 publications

(4 citation statements)

References 9 publications

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“…According to Equation 1, the exergy of each current is generally divided into kinetic (Ėx ke ), potential (Ėx po ), chemical (Ėx ch ), and physical (Ėx ph ) parts [29]. Potential and kinetic exergy can be ignored when the system is at rest relative to its environment [30].…”

Section: Methodsmentioning

confidence: 99%

Environmental Analysis of High Temperature Solar Heat Pump, Case Study of Hot Water Production System With Weather Conditions of Ahvaz

Shoeibi

Mehrpooya²,

Assaerh³

et al. 2022

JAEHR

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Background: The main purpose of this study is to evaluate the energy consumption quality of the hot water production system with weather conditions of Ahvaz. Methods: The related simulation is carried out using Aspen HYSYS software, version 10. Then Aspen HYSYS and Matlab software were used for exergy and environmental exergy and environmental exergy analyzes. Results: According to the study results, the exergy analysis showed that the highest exergy efficiency of the rotating components is related to the K100 compressor with 87.63%. Also, the lowest exergy destruction rate of the rotating components is related to the pump P100 with 0.52 kW. Also, an analysis of the effects of equipment on the environment from the perspective of life cycle assessment (LCA) and the effect of exergy destruction on the environment was conducted on the equipment so that the fb solar collector had the highest value among other equipment, indicating the greatest environmental effect of the inefficiency of this equipment. Compressor K101 should also be reviewed for LCA due to the high percentage of environmental factors. Conclusion: The results show that the environmental exergy analysis of the hot water production system can identify inefficient equipments and their impact rate on the environment.

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Section: Methodsmentioning

confidence: 99%

Environmental Analysis of High Temperature Solar Heat Pump, Case Study of Hot Water Production System With Weather Conditions of Ahvaz

Shoeibi

Mehrpooya²,

Assaerh³

et al. 2022

JAEHR

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“…According to Equation (1), the total exergy of the system for material stream is split into four parts, namely kinetic (Ėx ke ), potential (Ėx po ), physical (Ėx ph ), and chemical (Ėx ch ) exergies [26]. The potential and kinetic exergies are neglected [27].…”

Section: Conventional Exergy Analysismentioning

confidence: 99%

Advanced exergy analysis of the natural gas liquid recovery process

et al. 2022

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Energy quality in each country is one of the important indicators of economic development, Which affects the economic growth of that country. Exergy analysis, considering all flow properties including pressure, temperature, composition, is a powerful way to evaluate the energy consumption of equipment such as natural gas and liquefied gas plants. Inefficiency of a system can be defined by the conventional exergy analysis method, While, irreversible resources and real potentials for system improvement can only be identified by the advanced exergy analysis method. This analysis splits conventional exergy destruction into two exogenous and endogenous parts according to origin, and also unavoidable and avoidable parts according to the ability to remove and modifications. In this method, the exergy concept was separated by considering the ideal and avoidable condition assumptions. As a real case study, a natural gas liquid plant 800, from National Iranian South Oil Company located in southwest of Iran was considered to be investigated by conventional exergy analysis, advanced exergy analysis methods. The results of conventional exergy analysis illustrated that the highest amount of exergy destruction belonged to compressor and heat exchanger with 509.99 and 629.04 kW, respectively. However, in the case of heat exchanger, despite having the highest rate of exergy destruction, it is not considered in modification priorities due to its low avoidable exergy destruction value. Also, advanced exergy analysis suggested that the exergy destruction of the compressor and heat exchanger will be reduced by improving performance of these components.

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“…Peng Robinson equation is used for calculation of the physical properties of the process streams. Based on the published records in this area, 23,27,28 this equation can predict the properties with high accuracy. Table 3 shows the used setting and specifications of the process equipment.…”

Section: Process Design and Analysismentioning

confidence: 99%

“…(Mehrpooya dual mixed refrigerant (DMR), 29 Mehrpooya et al (AR-MR1) and (AR-MR1), 19 Shariati et al, 30 Ansarinasab et al (propane precooled mixed refrigerant [C3MR]) and (AR-MR1), 31 Ghorbani et al, 32 Waldmann (single mixed refrigerant-APCI) and (C3MR-Linde), 33 the physical properties of the process streams. Based on the published records in this area, 23,27,28 this equation can predict the properties with high accuracy. Table 3 shows the used setting and specifications of the process equipment.…”

Section: Process Simulation and Analysismentioning

confidence: 99%

Novel integrated helium extraction and natural gas liquefaction process configurations using absorption refrigeration and waste heat

et al. 2020

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Summary Conceptual design and modeling of novel‐integrated process configurations for helium extraction and natural gas liquefaction is investigated. Mixed fluid cascade (MFC) refrigeration system is considered for providing the needed refrigeration in the natural liquefaction section. Using an absorption refrigeration system as the precooling cycle is investigated in one of the introduced processes. Integrated flash and distillation method is used for helium extraction. Purity of the extracted crude helium is 50% (mole). Process streams operational condition and specifications of the devices are presented and explained. Composite curves of the heat exchangers demonstrate that thermal design has been done properly. Ratio of the power consumption to the produced liquefied natural gas (LNG) of the MFC process is 0.265 kWh per kg LNG and applying absorption refrigeration system instead of the pre‐cooling cycle decreases it to 0.1849 kWh per kg LNG. For the modified process with absorption refrigeration system helium extraction rate and power consumption ratio are 0.951 and 132.9 (kWh/[kgmole Helium]) respectively. Exergy method is applied on the under consideration processes. The results show that the compressors have the highest rate of exergy destruction among the other process equipment. An extensive economic analysis is done on the proposed processes. The results show that prime cost of the product (US$/kg LNG) for MFC and modified MFC processes are 0.1939 and 0.2069, respectively. Finally, a sensitivity analysis is done based on the economic factors such as electrical energy price and prime cost of the product.

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Evaluation of the cryogenic helium recovery process from natural gas based on flash separation by advanced exergy cost method – Linde modified process

Cited by 29 publications

References 9 publications

Environmental Analysis of High Temperature Solar Heat Pump, Case Study of Hot Water Production System With Weather Conditions of Ahvaz

Environmental Analysis of High Temperature Solar Heat Pump, Case Study of Hot Water Production System With Weather Conditions of Ahvaz

Advanced exergy analysis of the natural gas liquid recovery process

Novel integrated helium extraction and natural gas liquefaction process configurations using absorption refrigeration and waste heat

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