Examination of new turbo-feed pumps construction for Power Plant boilers

Unit P4.1 Power Plant is situated in Refinery Slovnaft Plc. Power Plant main task is supply superheated steam (pressure levels 0.4, 1.0 and 3.5 MPa) and electric power to Slovnaft refinery. High pressure superheated steam is produced on five high pressure steam boilers with installed load on 780 tonns per hour. Electric power is produced on four steam turbines with installed power 114 MWe.

Electricity power production on power plant strongly depends on heat consumption in Slovnaft Refinery. This is the main reason for shutting down the turbogenerator TG 4 in the summer period (June – September). This turbogenerator is back-pressure (0.08 MPa) with controlled steam extraction (0.4 MPa). Reason for TG 4 shut down in summer time is 0.4 MPa steam consumption decreasing. This decreasing would be able to compensate with installation of new 0.4 MPa steam consumer. New 3 pcs of boilers feed water pumps with turbo driver can be suitable steam consumers. The 0.4 MPa steam will be used for it as a live steam.

Ivan Stranovský, Andrea Grmelová