A conceptual design by integrating dimethyl ether (DME) production with tri-reforming process for CO2 emission reduction

Zhang, Yishan; Zhang, Shujing; Benson, Tracy J.

doi:10.1016/j.fuproc.2014.11.006

Cited by 48 publications

(13 citation statements)

References 19 publications

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“…The conceptual design of a DME production process was investigated by Zhang et al, where tri-reforming was used for syngas production. 21 The effect of various parameters such as temperature, CH 4 flow rate, and reactor pressure on the performance of the tri-reforming process was examined. In addition, the cost of the heat exchanger network was minimized using General Algebraic Modeling System (GAMS).…”

Section: Introductionmentioning

confidence: 99%

“…The DME reactor was modeled as a shell and tube fixed bed reactor using a FORTRAN subroutine script. The conceptual design of a DME production process was investigated by Zhang et al, where tri‐reforming was used for syngas production 21 . The effect of various parameters such as temperature, CH 4 flow rate, and reactor pressure on the performance of the tri‐reforming process was examined.…”

Section: Introductionmentioning

confidence: 99%

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Multi‐objective optimization and techno‐economic analysis of CO₂ utilization through direct synthesis of di‐methyl ether plant

Yasari

Panahi

Rafiee

2021

Intl J of Energy Research

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In this study, a multiobjective optimization problem (MOOP) with two objective functions (maximization of di-methyl-ether (DME) production rate and minimization of carbon dioxide release) was applied to the direct synthesis of DME from a natural gas-derived synthesis gas (syngas). Twelve degrees of freedom were considered. The MOOP results suggest that the process with a maximum DME production rate of 1686 kmol/hr releases 4788 kmol/hr CO 2 while the CO 2 release of the process with DME production rate of 1282 kmol/hr is 1761 kmol/hr. The higher the DME production rate, the lower net CO 2 emission to the air, natural gas consumption, and energy consumption per kg of the DME produced. In addition, the process with a higher DME production rate has a higher carbon efficiency and power production from the produced steam. The annual profit criteria of the overall process were used as a posterior preference index to select the best point from the resultant multiobjective optimization Pareto front. It was shown that the plant with the topmost DME production rate has the utmost annual profit compared to other Pareto optimum points. Lastly, the effect of degrees of freedom on the maximum DME production rate is discussed. K E Y W O R D Sannual profit, CO 2 utilization, di-methyl-ether synthesis, multiobjective optimization, natural gas-derived syngas Abbreviations: CE, carbon efficiency; C OL , cost of operating labor (million USD/year); C RM , cost of raw materials (million USD/year); C UT , cost of utilities (million USD/year); C i , concentration of component i À mol * ð x * Þ, vector of objective functions; x *

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Multi‐objective optimization and techno‐economic analysis of CO₂ utilization through direct synthesis of di‐methyl ether plant

Yasari

Panahi

Rafiee

2021

Intl J of Energy Research

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“…They found that the total GHG emissions from the system were about half of the life-cycle GHG of conventional H 2 production systems via steam methane reforming. In the study of Zhang et al [27], the effects of various factors including reaction temperature, reactor pressure and CH 4 flow rate on the syngas compositions obtained from the TR process were investigated numerically. An optimum operating condition for syngas production with a target ratio and maximized CO 2 conversion were obtained.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Syngas Production from Biogas via the Tri-Reforming Process

Chein

Hsu

2018

Energies

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Abstract:The tri-reforming process was employed for syngas production from biogas at elevated pressures in this study. In the tri-reforming process, air and water were added simultaneously as reactants in addition to the main biogas components. The effects of various operating parameters such as pressure, temperature and reactant composition on the reaction performance were studied numerically. From the simulated results, it was found that methane and carbon dioxide conversions can be enhanced and a higher hydrogen/carbon monoxide ratio can be obtained by increasing the amount of air. However, a decreased hydrogen yield could result due to the reverse water-gas shift reaction. A higher level of methane conversion and hydrogen/carbon monoxide ratio can be obtained with increased water addition.

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“…[8] However, if the water-containing methanol, together with the water-tolerant catalyst, can be used in the MTD reactor, the energy efficiency of the current γ-Al 2 O 3 based MTD process can be improved due to the saving of energy in the methanol separation unit. Zhang et al [15] made a conceptual design of a DME synthesis process by integrating DME synthesis with the tri-reforming process, and they suggested that the tri-reforming process was an economically viable method for converting CO 2 on an industrial scale. [7][8][9] However, byproduct hydrocarbons or even coke can form on the strong acid sites, which lower their stability and DME selectivity.…”

Section: Introductionmentioning

confidence: 99%

“…The suggested feedback closed loop system showed a good performance for controlling the reactor under input disturbances. Zhang et al [15] made a conceptual design of a DME synthesis process by integrating DME synthesis with the tri-reforming process, and they suggested that the tri-reforming process was an economically viable method for converting CO 2 on an industrial scale. Dahl et al [16] also proposed a MTD process by using crude methanol as the starting material to produce DME.…”

Section: Introductionmentioning

confidence: 99%

Energy‐Efficient Methanol to Dimethyl Ether Processes Combined with Water‐Containing Methanol Recycling: Process Simulation and Energy Analysis

et al. 2018

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Two methanol‐to‐dimethyl ether (MTD) process scenarios were proposed to develop new MTD processes with improved energy efficiency by recycling water‐containing methanol to the MTD reactor. In both scenarios, a water‐tolerant K‐modified H‐ZSM‐5 was used in the MTD reactor as the methanol dehydration catalyst. Process modeling was implemented by using Aspen Plus to obtain the quantitative energy analysis results. Both scenarios are mainly comprised of a methanol preheating unit, a methanol dehydration unit, a DME separation unit, a methanol separation unit, and a methanol recycling unit. The two modelled scenarios have differing flow paths of the methanol recycle stream. That is, in option 1, after separating DME, a portion of the water‐containing methanol was recycled directly to the MTD reactor without entering the methanol separation unit. Whereas, in option 2, all of the water‐containing methanol was sent to the methanol separation unit. However, the less‐purified methanol was obtained and recycled. The process performance of both proposed scenarios was investigated by varying the recycle ratio or the recycled methanol purity in scenarios 1 and 2, respectively. Compared with the conventional γ‐Al2O3 based MTD process, both of the proposed scenarios were found to be more beneficial in saving both energy and capital cost, which can be seen from the high energy saving rate and smaller equipment size of the separation units in the newly proposed MTD process scenarios 1 and 2.

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A conceptual design by integrating dimethyl ether (DME) production with tri-reforming process for CO2 emission reduction

Cited by 48 publications

References 19 publications

Multi‐objective optimization and techno‐economic analysis of CO₂ utilization through direct synthesis of di‐methyl ether plant

Multi‐objective optimization and techno‐economic analysis of CO₂ utilization through direct synthesis of di‐methyl ether plant

Analysis of Syngas Production from Biogas via the Tri-Reforming Process

Energy‐Efficient Methanol to Dimethyl Ether Processes Combined with Water‐Containing Methanol Recycling: Process Simulation and Energy Analysis

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A conceptual design by integrating dimethyl ether (DME) production with tri-reforming process for CO2 emission reduction

Cited by 48 publications

References 19 publications

Multi‐objective optimization and techno‐economic analysis of CO2 utilization through direct synthesis of di‐methyl ether plant

Multi‐objective optimization and techno‐economic analysis of CO2 utilization through direct synthesis of di‐methyl ether plant

Analysis of Syngas Production from Biogas via the Tri-Reforming Process

Energy‐Efficient Methanol to Dimethyl Ether Processes Combined with Water‐Containing Methanol Recycling: Process Simulation and Energy Analysis

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Multi‐objective optimization and techno‐economic analysis of CO₂ utilization through direct synthesis of di‐methyl ether plant

Multi‐objective optimization and techno‐economic analysis of CO₂ utilization through direct synthesis of di‐methyl ether plant