WATER TUBE STEAM GENERATOR
RE-VAP TA 14/15/ECO/BAS
Heat Recovery Steam Generator downstream Gas Turbine Turbomach T65 (6.5 MWel).
The scope of supply consists of design, construction, installation and commissioning of a complete heat recovery system, starting from the connection joint with turbine exhaust outlet up to stack exhaust outlet flange, including the steam generator and the exhaust gas complete line (gas distributor with diverter bypass damper and relative pneumatic actuator, ducts, textile expansion joints, etc.)
The saturated steam generator is water-tube type, natural circulation, consisting of an upper steam drum, convective evaporator tubes bundle and circulation pipes.
The steam generator is provided complete with feedwater pumps group, economiser (ECO) finned tubes type for feedwater preheating, exhaust gas bypass duct, diverter damper complete with pneumatic actuator and silenced main stack.
The steam generator is also equipped with instrumentation and safety devices according to PED Directive 97/23/CE allowing the automatic unattended plant operation for a period up to 72 hours (H72).
Technical data RE-VAP TA 14/15/ECO/BAS:
– Steam production: 14 t/h
– Operation pressure: 12 barg
– Saturated steam temperature: 191.6 ° C
– Feedwater temperature: 105 ° C
– Boiler design pressure: 15 barg
The saturated steam is used in the production process of Pulp&Paper mill.
In order to maximize the boiler efficiency, downstream economiser (ECO) a tail-end economizer (ECO2) for production of superheated water is installed.
Technical data superheated water ECO2:
– Heat output to water: 1,3 MW
– Water temperature (in/out): 75/120 ° C
– ECO2 design pressure: 15 barg