Steam compressing and storing device for waste heat boiler

Abstract

Disclosed is a steam compressing and storing device for a waste heat boiler, which is connected to the waste heat boiler generating steam by collecting waste heat from external facilities and stores the steam, the steam compressing and storing device including: a first steam storage unit that is communicably connected to the waste heat boiler and has a heat insulating structure to receive the steam and store the steam in an insulated state; a steam compressor that is communicably connected to the first steam storage unit and receives, from the first steam storage unit, and compresses the steam; and a second steam storage unit that is communicably connected to the steam compressor and has a heat insulating structure to receive the compressed steam from the steam compressor and store the compressed steam in an insulated state.

What is claimed is: 
     
         1 . A steam compressing and storing device for a waste heat boiler, which is connected to the waste heat boiler generating steam by collecting waste heat from external facilities and stores the steam, the steam compressing and storing device comprising:
 a first steam storage unit that is communicably connected to the waste heat boiler and has a heat insulating structure to receive the steam and store the steam in an insulated state;   a steam compressor that is communicably connected to the first steam storage unit and receives, from the first steam storage unit, and compresses the steam; and   a second steam storage unit that is communicably connected to the steam compressor and has a heat insulating structure to receive the compressed steam from the steam compressor and store the compressed steam in an insulated state.   
     
     
         2 . The steam compressing and storing device of  claim 1 , further comprising a driver that is communicably connected to the second steam storage unit to be driven by using the compressed steam stored in the second steam storage unit. 
     
     
         3 . The steam compressing and storing device of  claim 2 , wherein the driver is a steam turbine. 
     
     
         4 . The steam compressing and storing device of  claim 1 , wherein the steam generated by the waste heat boiler has pressure from 1 to 7 bar and a temperature from 100 to 170° C. 
     
     
         5 . The steam compressing and storing device of  claim 1 , wherein the steam compressor is a centrifugal compressor using an impeller or a volumetric compressor using a screw or a piston. 
     
     
         6 . The steam compressing and storing device of  claim 1 , wherein the steam compressed by the steam compressor has pressure from 5 to 15 bar and a temperature from 152 to 250° C.