Top-pressure recovery turbines (TPRT) operating on the blast-furnace top gas are designed to generate electric power at the expense of pressure differential between the gas pressure under the blastfurnace top and pressure in the all-factory top gas reservoir from which gas comes to the consumer.
"REP Holding" produces turbines rated at 12 and 25 MW (TPRT-12,TPRT-25). Based on this design manufactured also can be TPRT rated at 16, 10, 8, 6 MW.
Special features of TPRT produced by "REP Holding":
- speed of 1500 rpm, which provides minimization of possible erosive wear of the blading when operating on dust-laden gas;
- regulation of speed or gas pressure ahead of the turbine by means of the variable nozzles with a hydraulic drive;
- availability of the washing system to wash the flow passage of the turbine, using recirculated water of the blast-furnace shop gas cleaning cycle;
- availability of the condensate removal system to remove condensate from the inlet and outlet branch pipes of the turbine with a float-type hot-well.
Technical characteristics TPRT
| Name of parameter | TPRT-12 | TPRT-25 |
| Volume flow of gas at 0.101 MPa and 0°С, Nm3 /h | 460 000 | 900 000 |
| Gas pressure in the inlet branch pipe, MPa | 0,31 | 0,304 |
| Gas temperature in the inlet branch pipe, °С | 55 | 40 |
| Speed, s-¹ (rpm) | 25 (1500) | 1500 |
| Total power on the turbine coupling, MW | 11,8 | 22,5 |