In order to study the feasibility of large-scale carbon capture devices in coal-fired power plants

the technical route and ecnomic sensitivity of carbon capture devices at home and abroad is systematically analyzed. It is concluded that

the improved chemical absorption carbon capture technology should be give priority to selecting in China at the present stage. When selecting absorbers

industrially proven improved compound amine absorbers should be used mainly

and spare measures for other absorbent systems should be appropriately considered in future.In terms of energy saving process selection

the input and output ratio should be considered and priority should be given to the mature economical processes such as flue gas precooling

inter-stage cooling

liquid separation and flash compression. The equipment purchase cost accounts for 83.8% of the investment cost

so the optimization and selection of key equipment should be focused on. The steam and electricity costs account for 72.8% of the operation cost

so low steam and electricity cost power plants should be given priority in the project construction. When the fluctuation range of sensitivity parameters is ±10%

the influences of investment cost

unit capture energy consumption

steam price

electricity price and absorbent unit price on the sensitivity of final comprehensive CO_2 capture cost are 6.2

12.4

12.5

8.3

2.0 yuan

respectively. The results show that steam price

energy consumption per unit CO_2 capture and electricity price are significant factors affecting the carbon capture cost. Then is the investment cost

absorbent unit price and so on.