XIONG Yongqiang, HUA Ben. Analysis on energy-saving and CO2 emission reduction in energy power system by utilization of cold energy from liquefied natural gas[J]. CIESC Journal, 2009, (9): 2276-2283.
XIONG Yongqiang, HUA Ben. Analysis on energy-saving and CO2 emission reduction in energy power system by utilization of cold energy from liquefied natural gas[J]. CIESC Journal, 2009, (9): 2276-2283.DOI:
The CO2 emission reduction in power system is a high energy consumption process.Aiming at this point
a nearly zero CO2 emission power system is proposed
in which the cold energy from liquefied natural gas (LNG) is utilized in the process of air separation for oxygen production together with the capture of CO2.It is predicted that the unit power consumption by the proposed system using LNG cold energy could be reduced by 57.6% than that of the traditional air separation device in producing high pressure oxygen
liquid nitrogen and liquid argon.The exergy efficiency of the power cycle could be increased from 52% to 55.9%.Meanwhile
a mathematical model for this energy-saving and nearly zero CO2 emission power system is established
with which the process parameters of the power system are analyzed.For a terminal with 3.0×106 t·a-1 LNG input
the proposed power system could save 2.78×108 kW·h power per year and reduce 3.87×105 t·a-1 CO2 emission
by which the economic benefits could reach 2.19×108 CNY·a-1.