Acid gas adsorption on zeolite SSZ‐13: Equilibrium and dynamic behavior for natural gas applications

Abstract

In developing new adsorption separation processes, it is necessary to study both the equilibrium and dynamic adsorption properties of potential materials. Experimental determination of isotherms and dynamic breakthrough properties aid in the development of modeling new adsorption systems toward process development. Here, the equilibrium adsorption properties of a small‐pore zeolite, Na‐SSZ‐13, are studied for its natural gas separation potential. Using volumetric, gravimetric, and dynamic column breakthrough adsorption techniques, the adsorption properties of CO2, CH4, C2H6, H2S, and H2O are determined. High‐pressure breakthrough experiments demonstrate the mixed gas separation performance of Na‐SSZ‐13 in mixtures containing CO2, CH4, C2H6, and H2S. Simulations of these breakthrough experiments show that ideal adsorbed solution theory adequately describes the mixed gas adsorption modeling for this zeolite. In gas mixtures containing both CO2 and H2S, there is an observed acid gas reaction that results in elution of carbonyl sulfide, COS.

Porous Carbon Nanofibers Supported Zn@MnOx Sorbents with High Dispersion and Loading for Hot Coal Gas Desulfurization

“…[9][10][11] Liu et al synthesized desulfurization sorbent with highly dispersion of active components by combining porous MAS-9 and Ca-based oxides. 12 It was found that the sorbent exhibited a sulfur capacity of 17.16 g S 100 g -1 sorbent. Mi et al applied MCM-41 as porous supporter to promote the desulfurization performance of ZnO-based sorbent.…”

Efficient separation of 1,3‐butadiene fromC4hydrocarbons by flexible metal–organic framework with gate‐opening effect

“…Among the existing separation technologies, adsorption separation featuring simple operating conditions, energy saving, and high adsorption accuracy has been proved to be a potential separation technology with broad prospects for gas separation 11–13 . As an emerging advanced adsorbent, metal–organic frameworks (MOFs) are attracting more and more attention by virtue of their multifarious structural topologies, precise structural determination, and tunability of pore surface functionalities 14–16 .…”

Thermodynamic and molecular insights into natural gas dehydration using choline chloride‐based deep eutectic solvents

“…In addition, the NG extracted from the oil and gas fields contains a certain amount of water. The acidic substances in NG combine with water to form an acidic solution, which will greatly reduce the transmission efficiency of gas production pipeline and corrode the pipeline 4 . Therefore, NG dehydration is one of the important operations in NG processing industry.…”

“…Gas solubility analysisThe solubility of CH4 in Tethaline, Ethaline, and Reline was predicted at 303.2-333.2 K and 0-3.5 bar by the COSMO-RS model, as shown in Figures 5-7 (see Tables S3-S5 for detailed data). It can be seen from Figures 5A-C that under the same temperature and pressure, the solubility of CH 4 gas in Tethaline decreases significantly with the Solubility of CH 4 in Reline (ChCl:Urea) with the molar ratios of 1:1.5 (A), 1:2 (B), 1:2.5 (C), and 1:2 (98 wt% Reline + 2 wt% H 2 O) (D).…”