News to Waste Incineration Plants
Waste Incineration Plant Mainz Line 3
- Between 2001 and 2003, the two Waste Incineration Plants according to System MARTIN were built. The waste incineration disposes wastes out of the area of the cities of Mainz and Bingen and surroundings.
The thermal energy, which is released by the waste incineration, is transformed in 4-pass vertical steam generators in live steam, with which electricity is generated in downstream arranged steam turbo sets.
- For capacity increase, for electricity generation and for the energetically optimal tie-in in the 400 MW combined gas tubine- and steam turbine power plant (GuD-power plant), owned by Kraftwerke Mainz-Wiesbaden AG, the third waste incineration line, the extraction-condensing-steam turbo set as well as the interconnecting piping between the waste incineration plant and the gas- and steam turbine power plant were built.
- With that a part of the live steam, which is generated in the waste incineration plant, is fed into the adjacent gas turbine- and steam turbine power plant and there the steam is superheated into the reheater to 550 °C and consequently is transferred to electricity in a high efficient manner. This combination and interaction of plants was implemented the first time in Germany.
In a new steam turbo set with direct river water cooling and district heating extraction, a further efficient use of the live steam, generated in the waste incineration plant, takes place.
- The Waste Incineration CHP Plant Mainz is in relation to the energetic use of the waste for electricity-, process steam- and district heating-generation to be considered as a bench-mark solution.
- Nominal Live Steam Massflow of all 3 Waste Incineration Lines = 155 t/h
Nominal Lve Steam Massflow to Steam Turbine = 90 t/h
Nominal Live Steam Massflow to GT- & ST Power Plant = 95 t/h
Nominal Electrical Power Output Steam Turbo Set = 20.7 MW
Condensate-Preheating = 5.1 MW
District Heating Extration = 2-stage
- Design, Engineering, Planning and Delivery of 3. Waste Incineration Line by extension of the existing building, with waste receiving, waste incinerator according to System MARTIN, thermal waste treatment (reverse acting grate), steam generation and flue gas cleaning
- Tie-in of the live steam pipe of the waste incineration plant into the pipeline to the gas turbine- and steam turbine power plant, where the live steam is reheated and subsequently fed to the steam turbine to generate electricity.
- Tie-in of the existing Energy Part and the waste incineration plant internal steam consumption supply.
- Design, Engineering, Planning and Delivery of the Extraction-condensing steam turbo set with new steam turbine hall, direct cooled with the river water from the Rhein. In addition an extraction steam system and a district heating extraction belongs to the project scope.
The extraction steam supplies the steam consumption of the waste incineration lines.
In addition the extraction steam and the bleed steam supplies district heating over a 2-stage district heating extraction for the city of Mainz.
Between the building of the waste incineration lines and the steam turbine hall, a pipe rack for steam-, condensate- and auxiliary pipelines as well as for cabling was built.
- Design, Engineering, Planning and Delivery of the Cooling water intake structure for the river water intake, water cleaning system, pumps with flaps and the cooling water outfall.
For the well functioning discharge of the cooling water into the river, a new cooling water syphon pit was built.
HUTTER FREI POWER Scope of Supply and Services:
- Our Scope of Services for the Energy Part with water-/steam cycle and river water cooling:
Preparation of plant operation and control concept, design of the expansion lines concept with tie-in of live steam to gas turbine- and steam turbine power plant, the new steam turbo set and the existing small steam turbine, with modifications of the existing plant,
P&I- Diagrams, process technical input documents for the distributed control systen as for example process function plans, step sequence diagrams, logic diagrams, control schematics, system descriptions, failure reactions, overview of all load cases and operation cases, design and inquiry specification with evaluation, supplier control, arrangement planning, coordination of the technical interfaces, process technical commissioning of the distributed control system and overall commissioning management.
- Our Scope of Supply for the Energy Part:
Turn-key supply with erection and commissioning of the entire systems including the pipe rack between the building of the waste incineration lines and the steam turbine hall with all steam-, condensate- and auxiliary pipelines, and including the condensate preheating around the steam turbine
- Our Scope of Services for the Waste Incineration Line 3:
Qualitäty control of the entire mechanical erection, Overall commissioning management
- Our Scope of Services for the entire Waste Incineration Plant:
Proposal for solutions of operation problems, optimisation and adaptation for the extended operation of all 3 lines.
- Our Scope of Services for the energetical integration of all Power Plants at Site:
System-Engineering for the energetical integration of the waste incineration, the gas turbine- and steam turbine power plant, the existing energy part, the new energy part with steam turbo set and the district heating extraction as well as the tie-in of the new waste incineration plant internal steam consumption supply system.
- Entsorgungsgesellschaft Mainz m.b.H., Mainz, Germany
