Simulation Research on CO2 Capture Process By Chemical Method Based on Self-Heat Recuperation Technology

To
reduce the high energy consumption of the CO₂ capture process, the
self-heat regeneration technology is applied to optimize the traditional
chemical CO₂ capture process. Simulation analysis of the capture
process by Aspen plus£¬established
traditional chemical of CO₂ capture model based on flue gas emitted
from the triple-bed combined circulating fluidized bed(TBCFB). After that, the
self-heating regeneration technology is applied to optimize the energy saving
of the capture system. The simulation
results show that the energy consumption of the optimized capture process is
1.66GJ/ (t CO₂), and the energy consumption can decrease 37%.The
economic evaluation of the process was carried out through the calculation of
investment cost and operating cost. The optimized capture integration was
reduced by 25.84% compared with the traditional chemical process. The
improved capture process comprehensively utilizes the residual heat of the
system, and realizes that the recycling heat of the absorption heat of the
absorption tower and the steam condensation heat of the stripping tower, which
significantly reduces the energy consumption of the system, reduces the need
for additional heat sources and increases energy efficiency simultaneously.

 Fig.1 Traditional chemical CO₂ capture
process   Fig.2 Chemical CO₂ capture process by
self-heat recuperative

Fig.3 System model
CO2 capture process by self-heat recuperative