Evaluation of the PRICO liquefaction process using exergy-based methods

Morosuk, Tatiana; Tesch, Stefanie; Hiemann, A.; Tsatsaronis, George; Omar, Mohd

doi:10.1016/j.jngse.2015.02.007

Cited by 51 publications

(11 citation statements)

References 18 publications

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“…Similar conclusions are drawn by Xu et al [11]. More recently, Morosuk et al [12] apply exergybased methods (exergetic, exergeoeconomic and exergoenvironmental) to the PRICO process, which is a SMR process. They suggest to improve the cryogenic heat exchanger.…”

Section: Introductionsupporting

confidence: 61%

Thermodynamic comparison of three small-scale gas liquefaction systems

Nguyen

Rothuizen

Markussen

et al. 2018

Applied Thermal Engineering

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Section: Introductionsupporting

confidence: 61%

Thermodynamic comparison of three small-scale gas liquefaction systems

Nguyen

Rothuizen

Markussen

et al. 2018

Applied Thermal Engineering

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“…It is also known as a single mixed refrigerant (SMR) process. This cycle has several advantages such as a low amount of required equipment, a relatively simple process, low capital and operating cost, high flexibility, high reliability, and rapid startup [20].…”

Section: Refrigeration Cycle and Lng Recoverymentioning

confidence: 99%

“…Streams 10 and 7 are combined in a mixer to form stream 1 and return to the compressor. The following assumptions were considered for the simulation: The ambient temperature is 298 K, the ambient pressure is 1.013 bar, the pressure drop within the heat exchanger is assumed zero [24], and the isentropic efficiency of the compressor is assumed 80% [20]. The compositions of refrigerant and flare gas are given in Table 1.…”

Section: Refrigeration Cycle and Lng Recoverymentioning

confidence: 99%

Thermo–Economical Evaluation of Producing Liquefied Natural Gas and Natural Gas Liquids from Flare Gases

et al. 2018

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In many industrial plants including petrochemicals and refineries, raw hydrocarbons (mostly flammable gas) are released during unplanned operations. These flammable gases (usually called flare gases) are sent to a combustor and the process is called flaring. Flaring wastes energy and produces environmental pollution. Consequently, recovering the flare gases is an important subject in these industries. In this work, an economical and technical analysis is presented for the production of valuable products, namely, liquefied natural gas and natural gas liquids from flare gas. The flare gas of Fajr Jam refinery, a refinery located in the south part of Iran, is selected as a case study. One of the issues in recovering flare gases is the nonconstant flow rate of these gases. For this reason, an auxiliary natural gas flow rate is employed to have a constant feed for the flare recovery process. The Poly Refrigerant Integrated Cycle Operations (PRICO) refrigeration cycle is employed for producing liquefied natural gas and natural gas liquids. In the PRICO cycle, the mixed refrigerant is used as the working fluid. The other issue is the existence of H 2 S in the flare gases. The main idea is that the flare gas components, including H 2 S, have different boiling points and it is possible to separate them. Consequently, flare gases are separated into several parts during a number of successive cooling and heating stages and passing through phase separators. It is shown that the proposed flare gas recovery process prevents burning of 12 million cubic meters of the gases with valuable hydrocarbons, which is almost 70% of the current flare gases. Furthermore, about 11,000 tons of liquefied natural gas and 1230 tons of natural gas liquids are produced in a year. Finally, the economic evaluation shows a payback period of about 1.6 years.

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“…Exergy analysis indicates a great potential for improvement in this process. Exergy, exergoeconomic and exergoenvironmental analyses are applied to the PRICO liquefaction process and options for improvement are proposed [6].…”

Section: Introductionmentioning

confidence: 99%