Precombustion CO₂ Capture by Pressure Swing Adsorption (PSA): Comparison of Laboratory PSA Experiments and Simulations

Abstract

Pressure swing adsorption (PSA) experiments are carried out in a 2-column laboratory setup using activated carbon. As feed an equimolar CO2/H2 mixture is used. Adsorption pressures of 10, 20, and 30 bar are applied, whereas the desorption pressure and the feed temperature are fixed at 1 bar and 25 °C, respectively. During the experiments the temperatures at five different locations inside the columns are measured and the composition of the product streams is analyzed by a mass spectrometer. A one-dimensional, nonisothermal, nonequilibrium model is used to reproduce the experiments. The model was validated previously using breakthrough experiments, and the modifications required to describe full PSA cycles are highlighted. It is shown that the temperatures measured inside the columns provide an excellent possibility for comparison of experiments and simulations, whereas the measured concentration profiles are affected by the piping between column outlet and MS, which has to be considered carefully.

Energy and exergy analysis of chemical looping combustion technology and comparison with pre-combustion and oxy-fuel combustion technologies for CO2 capture

“…Design assumptions used for developing the process flowsheet models in Aspen plus[12,18,[25][26][27][65][66][67][68].…”

CO2 Capture from a Binary CO2/N2 and a Ternary CO2/N2/H2 Mixture by PSA: Experiments and Predictions

“…It is a onedimensional, nonisothermal, nonequilibrium model that takes into account the characteristics of the experimental setup, such as the column wall energy balance and the volume in the piping. The considerations needed to adapt the model for the specific experimental setup are described in detail by Schell et al 9 For the sake of completeness, the assumptions made in the development of the model are repeated here:…”

CO2 Adsorption: Experimental Investigation and CFD Reactor Model Validation

“…Furthermore, the acceleration on a particle is obtained from (14) where is the solids volume fraction; is the solid material mass density; is the drag function which depends on the particle size, velocity, position, and time; is the solids contact stress, which depends on spatial location; is the local mass-averaged particle velocity; and is a particle collision damping time from [39].…”

“…There are four main categories of these technologies: precombustion, postcombustion, oxy-fuel combustion, and chemical looping [5]. [12] 13X Zeolite PSA and VSA N/A Chaffee et al [13] 13X Zeolite VSA N/A Schell et al [14] Activated Carbon PSA Fixed bed Wang et al [15] 13X Zeolite and activated carbon VPSA Fixed bed Pirngruber and Leinekugel-Le-Cocq [16] Supported polyamine PSA N/A Siriwardane et al [17] NaOH/CaO TSA TGA and fixed bed Fauth et al [18] Supported mixed amines TSA Fixed bed Gray et al [19] Supported tertiary amine TSA TGA and fixed bed Gray et al [20] Supported amine TSA TGA Lee et al [21] Supported amine TSA TGA Sjostrom et al [22] Supported amine TSA CFB Sjostrom and Krutka [23] Supported amine TSA Fixed bed Monazam et al [24] Supported amine TSA Fluidized bed…”

“…An overview of the literature [12][13][14][15][16][17][18][19][20][21][22][23][24] and the various sorbent reactor configurations is presented in Table 1. Samanta et al [25] and Choi et al [26] provide comprehensive reviews of sorbent processes employing temperature swing, pressure swing, or vacuum swing to regenerate the adsorbate, referred to as PSA, TSA, and VSA concepts, respectively.…”