SGT5-2000E Gas Steam Combined Cycle Unit Heating Optimization
In recent years,low-energy heating and flexible heating transformation have become important topics in the development of heating technology for cogeneration units;Taking a certain company as a case study,the company size is 3×The 200 MW gas steam combined cycle heating unit prioritizes steam supply,but steam users continue to increase.In winter(November to March of the following year),natural gas prices fluctuate significantly and supply is tight,which cannot meet heating needs;In response to the above issues,the company has carried out heating renovation on the SGT5-2000E gas-steam combined cycle unit.By extracting low-pressure main steam from the boiler to supplement steam from the steam turbine for external heating and disconnecting the steam turbine for 100%main steam temperature reduction and pressure reduction,the heating capacity of a single unit has been increased from 100 t/h to 300 t/h.In the case where natural gas supply cannot meet the heating demand,the steam demand of heat users is effectively guaranteed.
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