Economic assessment of carbon capture by minichannel absorbers

Abstract

In this work, a physio-economic model supported by lab-scale experiments assessing the economic viability of minichannel based carbon capture units is presented. The net present value of (capital and operating) costs (NPVC) ensued throughout the plant life is selected as the benchmarking parameter. An optimization problem is formulated and solved with the objective of minimizing the NPVC of the unit subject to constraints imposed by the physics of absorption and pressure drop limits; both of which are captured via experimentally deduced empirical correlations. The results show that the minichannel absorbers are economically competitive to conventional systems for low capacity CO 2 capture achieving savings ranging from $50% to 3% for plant capacities ranging from 5 to 50 MMSCFD, respectively, primarily due to their lower capital costs. At higher plant capacities, the higher operating costs of the minichannel units dominate their NPVC and as such lead them to lose their competitiveness.

Mixed matrix membranes containing polymer‐embedded metal‐organic framework microspheres

“…Carbon capture, realized by separating CO 2 from other gasses, for example, H 2 , N 2 , and CH 4 , has been considered as a feasible strategy to reduce CO 2 emission. Various technologies, including absorption and membrane separation, are proposed for CO 2 capture 3‐8 . Membrane technology has been attracting intensive attention because of its high efficiency, simple operation, environmental friendliness, and so forth 7‐11 .…”

Improving membrane performance by incorporating polymer-embedded metal-organic framework microspheres

“…Various technologies, including absorption and membrane separation, are proposed for CO 2 capture. [3][4][5][6][7][8] Membrane technology has been attracting intensive attention because of its high efficiency, simple operation, environmental friendliness, etc. [7][8][9][10][11] Polymeric membranes with high processibility, low energy requirement, and relatively cheap production cost are widely applied in CO 2 separation.…”

Ultrasonic Enhancement of CO2 Desorption from MDEA Solution in Microchannels

“…Ye et al 12 found that CO 2 absorption efficiency could be improved to 99.94% using a rectangular microchannel under 3 MPa pressure. Yang et al 13 further performed the economic analysis of microchannel based CO 2 capture units. The results indicated that microreactors were highly economically competitive to conventional equipment, achieving savings up to 50% at 5 MMSCFD plant capacity.…”