Multiscale model based design of an energy‐intensified novel adsorptive reactor process for the water gas shift reaction

Abstract

In this work, an adsorptive reactor (AR) process is considered that can energetically intensify the water gas shift reaction (WGSR). To best understand AR process behavior, a multiscale, dynamic, process model is developed. This multiscale model enables the quantification of catalyst and adsorbent effectiveness factors within the reactor environment, obliviating the commonly employed assumption that these factors are constant. Simulations of the AR's alternating adsorption‐reaction/desorption operation, using the proposed model, illustrate rapid convergence to a long‐term periodic solution. The obtained simulation results quantify the influence of key operating conditions and design parameters (e.g., reactor temperature/pressure, Wcat/FCO, Wad/FCO, FH2O/FCO ratios, and pellet size) on the AR's behavior. They also demonstrate, for pellet diameters used at the industrial scale, significant temporal and axial variation of the catalyst/adsorbent pellet effectiveness factors. Finally, the energetic intensification benefits of the proposed AR process over conventional WGSR packed‐bed reactors are quantified.

Integration of Membrane Separation with Nonthermal Plasma Catalysis: A Proof-of-Concept for CO2 Capture and Utilization

“…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.…”

“…More importantly, the concept of an integrated membrane-NTP catalysis process can be expanded as a generic platform for the efficient capture and utilization of CO 2 from various industrial CO 2 sources. 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, metal–organic frameworks (MOFs) membranes for CO 2 capture from natural gas, or carbon molecular sieve membranes (CMSM) for CO 2 capture in coal/biomass-derived gasification gases in the integrated gasification gas combined cycle (IGCC) power generation plant. ,, …”

A Numerical Study of Hydrogen Production via High-temperature and Low-temperature Water-Gas Shift Reactors’ System: The Multi-Scale Modeling Approach and Simulation

“…Thus, more economical hydrogen production with significant cost reduction is required for the transition to achieve these goals. The Water Gas Shift Reaction-WGSR is a historically well-studied/known commercial chemical process, and has many very important industrial applications (Karagöz et al 2019a). Among these applications, the WGSR plays a very crucial role in the H2 production process by serving as further H2 enrichment and CO degradation.…”

High‐performance oxygen transport membrane reactors integrated with IGCC for carbon capture

“…Three promising routes for CO 2 capture in these plants: pre‐ and postcombustion capture and oxy‐fuel combustion, are under development. Among them, the integrated gasification combined cycle (IGCC) with carbon capture (CC) shows great potential as a precombustion capture technology 4‐6 . However, an efficiency reduction of 8–12% points has been predicted; when using a water gas shift (WGS) reactor with absorption‐based CO 2 capture technologies (IGCC‐WGS), compared with the cycles without CC 7‐9 .…”

“…Among them, the integrated gasification combined cycle (IGCC) with carbon capture (CC) shows great potential as a precombustion capture technology. [4][5][6] However, an efficiency reduction of 8-12% points has been predicted; when using a water gas shift (WGS) reactor with absorption-based CO 2 capture technologies (IGCC-WGS), compared with the cycles without CC. [7][8][9] The high-temperature gasification (1,200-1,400 C) and low-temperature CO 2 separation (25-400 C) make heat integration inefficient, and lead to excessive exergy loss.…”