Utilizing of Waste Heat in Natural Gas Processing Plants for Efficiency Improvement by Using of Organic Rankine Cycle (ORC)

2015 ◽  
Author(s):  
Ahmed Haridy A. Hameed ◽  
S. Zayed
Keyword(s):  
Natural Gas ◽  
Waste Heat ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Efficiency Improvement ◽  
Gas Processing ◽  
Natural Gas Processing ◽  
Processing Plants

Efficiency Improvement of Natural Gas Combined Cycle Power Plant With CO2 Capturing and Sequestration

2012 ◽  
Author(s):  
Abdullah Al-Abdulkarem ◽  
Yunho Hwang ◽  
Reinhard Radermacher
Keyword(s):  
Natural Gas ◽  
Waste Heat ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Simulation Software ◽  
Combined Cycle ◽  
Co2 Removal ◽  
Efficiency Improvement ◽  
Absorption Chillers ◽  
Natural Gas Combined Cycle

Although natural gas is considered as a clean fuel compared to coal, natural gas combined cycles (NGCC) emit high amounts of CO2 at the plant site. To mitigate global warming caused by the increase in atmospheric CO2, CO2 capture and sequestration (CCS) using amine absorption is proposed. However, implementing this CCS system increases the energy consumption by about 15–20%. Innovative processes integration and waste heat utilization can be used to improve the energy efficiency. Four waste heat sources and five potential uses were uncovered and compared using a parameter defined as the ratio of power gain to waste heat. A new integrated CCS configuration is proposed, which integrates the NGCC with the CO2 removal and CO2 compression cycles. HYSYS simulation software was used to simulate the CO2 removal cycle using monoethanolamine (MEA) solution, NGCC, CO2 compression cycle, CO2 liquefaction cycles and Organic Rankine Cycle (ORC). The developed models were validated against experimental data from the literature with good agreements. Two NGCC with steam extraction configurations were optimized using Matlab GA tool coupled with HYSYS simulation software. Efficiency improvement in one of the proposed CCS configurations that uses the available waste heat in absorption chillers to cool the inlet-air to the gas turbine and to run an ORC, and uses the developed CO2 liquefaction and pumping instead of multistage compression is 6.04 percent point, which represents 25.91 MW more power than the conventional CCS configuration.

Effect of Alumosilicate Adsorbent Regeneration Conditions on the Dehydration of Methanol Extracted from Natural Gas

2020 ◽  
Vol 24 (8) ◽  
pp. 17-21
Author(s):  
Z.А. Temerdashev ◽  
A.V. Rudenko ◽  
I.A. Kolychev ◽  
A.S. Kostina
Keyword(s):  
Natural Gas ◽  
Silica Gel ◽  
Silica Gels ◽  
Treatment Unit ◽  
Fuel Gas ◽  
Gas Treatment ◽  
Adsorbent Regeneration ◽  
Gas Processing ◽  
Natural Gas Processing ◽  
Processing Plants

This paper focuses on the parameters of the technological regime for the regeneration of aluminosilicate adsorbents on natural gas processing plants adsorption type on the dehydration of methanol from natural gas. The object of this study were the non-hydrocarbon fraction of liquid products of the purification of natural gas from an adsorption unit on silica gel with countercurrent regeneration. Gas treatment plants was optimized using BASF KC-Trockenperlen silica gels and microporous silica gel adsorbents (АСМ). The direct-flow regeneration technology on natural gas processing plants with adsorption purification оn aluminosilicate adsorbents contributes to a more efficient reaction of the conversion of methanol to dimethyl ether and his process reduces the volume of non-hydrocarbon waste fraction. Decreasing methanol concentrations reduces atmospheric emissions and saves fuel gas consumed by a stationary thermal treatment unit.

Alarm management practices in natural gas processing plants

2016 ◽  
Vol 55 ◽  
pp. 185-196 ◽  
Author(s):  
Vinícius Barroso Soares ◽  
José Carlos Pinto ◽  
Maurício Bezerra de Souza
Keyword(s):  
Natural Gas ◽  
Management Practices ◽  
Alarm Management ◽  
Gas Processing ◽  
Natural Gas Processing ◽  
Processing Plants

Investigating Potential Efficiency Improvement for Light-Duty Transportation Applications Through Simulation of an Organic Rankine Cycle for Waste-Heat Recovery

2010 ◽  
Author(s):  
K. Dean Edwards ◽  
Robert M. Wagner
Keyword(s):  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Efficiency Improvement ◽  
Light Duty ◽  
Driving Conditions ◽  
Egr Cooler ◽  
Transportation Applications

Modern diesel engines used in light-duty transportation applications have peak brake thermal efficiencies in the range of 40–42% for high-load operation with substantially lower efficiencies at realistic road-load conditions. Thermodynamic energy and exergy analysis reveals that the largest losses from these engines are due to heat loss and combustion irreversibility. Substantial improvement in overall engine efficiency requires reducing or recovering these losses. Unfortunately, much of the heat transfer either occurs at relatively low temperatures resulting in large entropy generation (such as in the air-charge cooler), is transferred to low-exergy flow streams (such as the oil and engine coolant), or is radiated or convected directly to the environment. While there are significant opportunities for recovery from the exhaust and EGR cooler for heavy-duty applications, the potential benefits of such a strategy for light-duty diesel applications are unknown due to transient operation, the low thermal quality of exhaust gases at typical driving conditions, and the added mass of the system. Waste-heat recovery efforts will directly compete with NOx aftertreatment systems for the limited thermal energy in the exhaust during low-load operation. We have developed an organic Rankine cycle model using GT-Suite® to investigate the potential for efficiency improvement through waste-heat recovery from the exhaust and EGR cooler of a light-duty diesel engine. Results from steady-state and drive-cycle simulations are presented, and we discuss the operational difficulties associated with transient drive cycles and competition between waste-heat recovery systems, turbochargers, aftertreatment devices, and other systems for the limited thermal resources at typical driving conditions.

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