2018
DOI: 10.1021/acs.iecr.8b02653
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Experimental Study of an Intensified Water–Gas Shift Reaction Process Using a Membrane Reactor/Adsorptive Reactor Sequence

Abstract: We present here a preliminary experimental study of a novel reactor configuration, consisting of a membrane reactor (MR) followed by two adsorptive reactors (ARs) in parallel, operating alternately, utilized for the production of high-purity hydrogen with simultaneous CO2 capture during the water–gas shift (WGS) reaction treating a coal gasifier off-gas. In the study, we used a commercial sour-shift WGS catalyst (Co/Mo/Al2O3) in both the MR and the AR. A carbon molecular sieve (CMS) membrane was used in the MR… Show more

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Cited by 20 publications
(10 citation statements)
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“…Specifically, the MS with two membrane units achieved the highest CCE of ∼91.8% at feed total flow rate of <30 mL min −1 , which achieved the present CCE target set by the U.S. Department of Energy (DOE) for the gasifier off-gas (i.e., >90%). 3 The system with two membrane units showed the considerably improved performance of separating CO 2 from the mixture, which is reflected by the comparison of the CO 2 concentration in the permeate-side of the MS, as shown in Figure S11, that is, 1.2 × 10 −5 mol s −1 for two membranes versus 5.4 × 10 −6 mol s −1 for one membrane at feed total flow rate of 40 mL min −1 . Consequently, under the conditions used (Figure 6b and Figure S10b), the integrated system with two membrane units (in the MS) promoted the CH 4 formation in the NTPR (i.e., 5.3 × 10 −6 to 9.2 × 10 −6 mol s −1 versus 2.7 × 10 −6 to 3.4 × 10 −6 mol s −1 for the integrated system with one membrane unit).…”
Section: Resultsmentioning
confidence: 99%
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“…Specifically, the MS with two membrane units achieved the highest CCE of ∼91.8% at feed total flow rate of <30 mL min −1 , which achieved the present CCE target set by the U.S. Department of Energy (DOE) for the gasifier off-gas (i.e., >90%). 3 The system with two membrane units showed the considerably improved performance of separating CO 2 from the mixture, which is reflected by the comparison of the CO 2 concentration in the permeate-side of the MS, as shown in Figure S11, that is, 1.2 × 10 −5 mol s −1 for two membranes versus 5.4 × 10 −6 mol s −1 for one membrane at feed total flow rate of 40 mL min −1 . Consequently, under the conditions used (Figure 6b and Figure S10b), the integrated system with two membrane units (in the MS) promoted the CH 4 formation in the NTPR (i.e., 5.3 × 10 −6 to 9.2 × 10 −6 mol s −1 versus 2.7 × 10 −6 to 3.4 × 10 −6 mol s −1 for the integrated system with one membrane unit).…”
Section: Resultsmentioning
confidence: 99%
“…Specifically, zeolite membranes in the MS subsystem can be replaced by other state-of-the-art membranes for different industrial CO 2 sources, such as polymeric membranes for biogas separation, 16 metal−organic frameworks (MOFs) membranes for CO 2 capture from natural gas, 48 or carbon molecular sieve membranes (CMSM) for CO 2 capture in coal/biomassderived gasification gases in the integrated gasification gas combined cycle (IGCC) power generation plant. 3,49,50 Figure 8 shows a generic schematic of the integrated MS-NTPR process for CCU toward various CO 2 sources. Specifically, in this process, CO 2 separation from the relevant sources can be achieved effectively via the MS for the subsequent conversion.…”
Section: Resultsmentioning
confidence: 99%
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“…It is reasonable data because an MR has a fairly high H 2 yield in comparison with a CR according to previous research studies. 34,51,52 Moreover, the PSA and compressor costs were dramatically decreased more than the increase in the membrane module cost.…”
Section: ■ Results and Discussionmentioning
confidence: 99%
“…They obtained a reduction of 8.17% and 6.59% in the total investment and operations and maintenance (O&M) costs, respectively, compared to the base case design. Recently, in the effort to make IGCC plants with a CO 2 capture unit sustainable, Chen et al [ 113 ] propose an integrated IGCC power plant with a membrane reactor and adsorptive reactor (MR‐AR) combined. In this system, syngas flows through a membrane reactor (MR) filled with a WGS catalyst (Co/Mo/Al 2 O 3 ).…”
Section: Process Intensification and Catalysismentioning
confidence: 99%