Based on the demand for external industrial steam

it is planned to carry out industrial steam reformation for a 660 MW supercritical unit.According to the design parameters and actual operation of the unit

this paper puts forward two kinds of industrial steam extraction retrofit schemes

namely the cold section steam extraction+four-section steam extraction+pressure match and the hot section steam extraction+four-section steam extraction+ pressure match

the economic analysis of the two schemes is carried out

and the combination of the two schemes is finally determined

which is expected to meet the requirements of industrial steam extraction under the premise of the unit operating in the optimal mode

to Achieve Power Generation/steam supply/heat supply/desalination and other products business purposes.