Affiliation:
1. Harbin Engineering University
2. China University of Mining and Technology
3. North China Electric Power University
Abstract
Abstract
Post-combustion carbon capture is a direct and effective way for onboard carbon capture. Therefore, it's important to develop onboard carbon capture absorbent that can both ensure a high absorption rate and reduce energy consumption of desorption process. In this paper, a K2CO3 solution was first established using Aspen Plus to simulate CO2 capture from the exhaust gases of a marine dual-fuel engine in diesel mode. The lean and rich CO2 loading results from the simulation were used to guide the selection and optimization of the activators used in the experiment. During the experiment, five amino acid salt activators including SarK, GlyK, ProK, LysK, and AlaK, and four organic amine activators including MEA, PZ, AEEA, and TEPA were used. Experiments only considered the activation effect of CO2 loading between lean and rich conditions. The results showed that after adding a small amount of activator, the absorption rate of CO2 by the absorbent was greatly improved, and the activation effect of organic amine activators was stronger than that of amino acid salts. Among the amino acid salts, the SarK-K2CO3 composite solution showed the best performance in both absorption and desorption. Amongst the amino acid salts and the organic amino activators, SarK-K2CO3 showed the best performance in strengthening the CO2 desorption while PZ-K2CO3 enhanced the CO2 absorption process the most. In the study of the concentration ratio, it was found that when the mass concentration ratio was 1:1 for SarK:K2CO3 and PZ:K2CO3, the CO2 absorption and desorption processes improved well.
Publisher
Research Square Platform LLC
Reference36 articles.
1. Review on CO2 capture by blended amine solutions;Aghel B;Int J Greenhouse Gas Control,2022
2. Rate-based simulation and comparison of various promoters for CO2 capture in industrial DEA-promoted potassium carbonate absorption unit;Borhani TNG;J Ind Eng Chem,2015
3. CO2 capture with K2CO3 solutions: A state-of-the-art review;Borhani TNG;Int J Greenhouse Gas Control,2015
4. CIMAC (2008) Guide to Diesel Exhaust Emissions Control of NOX, SOX, Particulates, Smoke and CO2-Seagoing Ships and Big Stationary Diesel Power Plants. International Council on Combustion Engines Frankfurt, Germany
5. Concordia, University (2009) Retrieved September 1, 2022. Carbon Emissions Linked To Global Warming In Simple Linear Relationship. ScienceDaily