Energiagazdalkodasi Intezet

Zoltan Belcsak

Zoltan Vadas

Bela Wenzel

Istvan Papp

Gyorgy Palfalvi

Vilmos Vasvari

Erno Luptak

Geza Takacsy

Subject of the invention is a process for the realization of cogenerative supply of electricity and heat, and in given case for their combination with waste heat recovery, particularly in case of combined (gas-steam) cycle industrial power plants. The essential feature of the invention is that during the season without heat demand the condenser with heating capacity N is operated by cooling with cooling tower, and during the heat-intensive season it is operated at a higher temperature required for the heat supplying operation mode, while the cooling tower (7) is disconnected partially or completely, and the resultant reduction of the specific expansion and heating capacity of the steam turbine (4) is compensated by increasing the steam parameters and steam output of the waste heat recovery boiler (3) with supplementary firing (11).

Process for the realization of cogenerative supply of electricity and

The invention is used in the field of pressure-intensifying stations of natural gas and oil pipelines. The essential character of the process according to the invention is that steam is produced in boilers heated with the outgoing flue gas of the gas turbines driving the compressors (pumps), the steam is conducted into steam turbine for driving further compressor(s), pump(s). Main feature of the equipment according to the invention is that the ratio of the simultaneously operating gas turbines and steam turbines may vary from the equivalent to tripple value, the ratio is suitably double, and the stand-by machine unit is driven always by gas turbine, separate flue gas boiler is connected to each of the gas turbines, while the boilers are equipped with supplementary and/or substituting automatic heater. Advantages of the invention include the following:

Process for increasing the capacity and/or energetic efficiency of

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Budapest, Hungary

Zoltan Belcsak