Optimization of the production of syngas from shale gas with economic and safety considerations

Martinez-Gomez, Juan; Nápoles‐Rivera, Fabricio; Ponce-Ortega, José María; El‐Halwagi, Mahmoud M.

doi:10.1016/j.applthermaleng.2016.08.201

Cited by 60 publications

(29 citation statements)

References 28 publications

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“…The results indicate that the changing trend of density profile is always dominated by the increasing temperature. The density of nitrogen is smaller than 200 kg/m 3 after the depth reaches 100 m or larger, while the density of supercritical CO 2 could be larger than 900 kg/m . The smaller density of nitrogen would facilitate to induce faster temperature increase of nitrogen than carbon dioxide along the wellbore.…”

Section: Resultsmentioning

confidence: 99%

“…The density of nitrogen is smaller than 200 kg/m 3 after the depth reaches 100 m or larger, while the density of supercritical CO 2 could be larger than 900 kg/m. 3,[28][29][30] The smaller density of nitrogen would facilitate to induce faster temperature increase of nitrogen than carbon dioxide along the wellbore. As for the viscosity profile, it begins to increase at about 50 m, and then, the increasing rate decreases to a linear method.…”

Section: Analysis Of the Pressure Transmissionmentioning

confidence: 99%

“…Unconventional gas resources, with huge reserve as shale gas, coalbed methane, and tight sandstone gas, have been regarded as the most promising alternative options for conventional fossil fuels, 1,2 which can also significantly reduce environmental pollution if they are more efficiently exploited at a commercial scale. 3 However, unconventional gas resources are generally reserved in unfavorable reservoirs with low permeability, 4,5 and stimulations are always necessary to achieve economical production and recovery. [6][7][8] In recent years, the technical development in multistage hydraulic fracture in horizontal well has made it accessible to exploit shale gas commercially, which also facilitates to mitigate the energy crisis and cut its cost.…”

Section: Introductionmentioning

confidence: 99%

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Predicting the radial heat transfer in the wellbore of cryogenic nitrogen fracturing: Insights into stimulating underground reservoir

Song

Shi

Wang

et al. 2020

Energy Science & Engineering

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Cryogenic nitrogen fracturing is an attractive method for stimulating underground reservoir, since it could favorably induce complex fracture due to the huge temperature difference with lower injection pressure and with the replacement of current water‐based fracturing fluid. However, the concern about whether cryogenic nitrogen would be overheated remains unrevealed in the engineering environment with large wellbore length. In addition, reservoir stimulation results are also related with the pressure state at bottom hole. Therefore, in this study, a mathematical model was proposed to predict the radial heat transfer and its influence on vertical pressure transmission in the wellbore with cryogenic nitrogen as fracturing fluid. The model fully couples the heat transfer, hydraulics, and the compressibility of nitrogen, and then, the calculation results were presented and analyzed through a case study. According to the results, the temperature of nitrogen increases too fast under conventional engineering conditions, and it changes into gaseous state at the depth lower than 100 m. Finally, the temperature difference between nitrogen and formation rock becomes too minimal to induce thermal stress at bottom hole. Due to the fast temperature increase, the density of nitrogen decreases too much, and the vertical pressure increasing rate by liquid nitrogen (1.66 MPa/km) is merely 18.2% that in carbon dioxide fracturing (9.13 MPa/km). The results indicate that utilization of special casing with much larger thermal resistance is an indispensable approach to realize the feasibility and advantages of cryogenic nitrogen fracturing.

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Section: Resultsmentioning

confidence: 99%

Section: Analysis Of the Pressure Transmissionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Predicting the radial heat transfer in the wellbore of cryogenic nitrogen fracturing: Insights into stimulating underground reservoir

Song

Shi

Wang

et al. 2020

Energy Science & Engineering

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“…In the reformer R‐801, syngas containing H 2 , CO, and CO 2 is formed through reactions (3)–(5), and the corresponding kinetic model is given in Table S4 in the Supporting Information . The steam methane reforming reaction is highly endothermic, and heat for steam reformer is supplied via the combustion of a portion of raw shale gas . The syngas stream exiting the reformer R‐801 is cooled in a heat exchanger (E‐801) to generate steam and a cooler (E‐802) to remove water by condensation.…”

Section: Shale Gas Supply Shale Gas Processing and Methanol Productionmentioning

confidence: 99%

Modular methanol manufacturing from shale gas: Techno‐economic and environmental analyses of conventional large‐scale production versus small‐scale distributed, modular processing

Yang

You

2017

AIChE Journal

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This article presents comparative techno-economic and environmental analyses of four representative shale gas monetization options, namely, conventional shale gas processing, large-scale methanol manufacturing, modular methanol manufacturing with shale gas supplied by pipelines, and modular methanol manufacturing with consideration of plant relocation. We first present shale gas supply models for the four gas monetization options. Next, the process designs for shale gas processing and methanol manufacturing from shale gas are described. We develop detailed process simulation models for shale gas processing and methanol manufacturing with different scales using raw shale gas extracted from the Marcellus, Eagle Ford, and Bakken shale plays. On this basis, techno-economic analyses and environmental impact analyses are conducted for the four shale gas monetization options to systematically compare their economic and environmental performances based on the same conditions. The results show that modular methanol manufacturing is more economically competitive than conventional shale gas processing, although it leads to higher environmental impacts. Besides, modular methanol manufacturing is better than large-scale methanol manufacturing for raw shale gas produced from distributed, remote wells from both economic and environmental perspectives. V C 2017 American Institute of Chemical Engineers AIChE J, 64: 495-510, 2018 499 SGP, LMM, and MMM are short for shale gas processing, large-scale methanol manufacturing, and modular methanol manufacturing, respectively. HP is short for high pressure. a Values are based on HHV.

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“…11 With the current high growth of shale gas production at $2.7% per year, it has become a highly sought industrial petrochemical feedstock that can produce value-added chemicals. 12 Meanwhile, from the thermodynamic stoichiometric equilibrium point of view, the conversion of CO 2 (50%) in DR of C 2 H 6 and C 4 H 10 can be achieved at 488 C and 444 C, which is $12% to15% lower than CH 4 (560 C). 8 Such reduction in reaction temperatures offers better flexibility in catalyst synthesis, especially the physicochemical structural tuning of the catalysts to increase their lifespan and activity.…”

Section: Introductionmentioning

confidence: 99%

Machine learning–assisted CO ₂ utilization in the catalytic dry reforming of hydrocarbons: Reaction pathways and multicriteria optimization analyses

Lim

Loy

Alhazmi

et al. 2021

Intl J of Energy Research

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The catalytic dry reforming (DR) process is a clean approach to transform CO 2 into H 2 and CO-rich synthetic gas that can be used for various energy applications such as Fischer-Tropsch fuels production. A novel framework is proposed to determine the optimum reaction configurations and reaction pathways for DR of C 1 -C 4 hydrocarbons via a reaction mechanism generator (RMG). With the aid of machine learning, the variation of thermodynamic and microkinetic parameters based on different reaction temperatures, pressures, CH 4 /CO 2 ratios and catalytic surface, Pt(111), and Ni(111), were successfully elucidated. As a result, a promising multicriteria decision-making process, TOPSIS, was employed to identify the optimum reaction configuration with the trade-off between H 2 yield and CO 2 reduction. Notably, the optimum conditions for the DR of C 1 and C 2 hydrocarbons were 800 C at 3 atm on Pt(111); whereas C 3 and C 4 hydrocarbons found favor at 800 C and 2 atm on Ni(111) to attain the highest H 2 yield and CO 2 conversion. Based on the RMG-Cat (first-principle microkinetic database), the energy profile of the most selective reaction pathway network for the DR of CH 4 on Pt(111) at 3 atm and 800 C was deducted. The activation energy (E a ) for C H bond dissociation via dehydrogenation on the Pt(111) was found to be 0.60 eV, lower than that reported previously for Ni(111), Cu(111), and Co(111) surfaces. The most endothermic reaction of the CH 4 reforming process was found to be C 3 H 3 * + H 2 O* $ OH* + C 3 H 4 (218.74 kJ/mol).

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Optimization of the production of syngas from shale gas with economic and safety considerations

Cited by 60 publications

References 28 publications

Predicting the radial heat transfer in the wellbore of cryogenic nitrogen fracturing: Insights into stimulating underground reservoir

Predicting the radial heat transfer in the wellbore of cryogenic nitrogen fracturing: Insights into stimulating underground reservoir

Modular methanol manufacturing from shale gas: Techno‐economic and environmental analyses of conventional large‐scale production versus small‐scale distributed, modular processing

Machine learning–assisted CO ₂ utilization in the catalytic dry reforming of hydrocarbons: Reaction pathways and multicriteria optimization analyses

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Optimization of the production of syngas from shale gas with economic and safety considerations

Cited by 60 publications

References 28 publications

Predicting the radial heat transfer in the wellbore of cryogenic nitrogen fracturing: Insights into stimulating underground reservoir

Predicting the radial heat transfer in the wellbore of cryogenic nitrogen fracturing: Insights into stimulating underground reservoir

Modular methanol manufacturing from shale gas: Techno‐economic and environmental analyses of conventional large‐scale production versus small‐scale distributed, modular processing

Machine learning–assisted CO 2 utilization in the catalytic dry reforming of hydrocarbons: Reaction pathways and multicriteria optimization analyses

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Machine learning–assisted CO ₂ utilization in the catalytic dry reforming of hydrocarbons: Reaction pathways and multicriteria optimization analyses