Glasgow, Scotland
Case Study - Ash and slag transport system for integrated waste management plant
Location
Planning period
January 2023 - May 2024
Bulk material
Ash, Slag
South Clyde Energy Centre, Scotland
The South Clyde Energy Centre in Glasgow is an Energy-from-Waste (EfW) facility under construction and designed using state-of-the-art technology. It will be operational by the end of 2025 and will support Scotland's ban on landfill of municipal waste, which comes into force in the same year. The South Clyde Energy Centre will generate electricity from the incineration of household and commercial waste. When fully operational, the plant is expected to have an incineration capacity of 350,000 tons of waste per year, equivalent to the annual waste generated by approximately 700,000 people. In addition, the plant will have an electricity generation capacity of 45 MWe, which corresponds to the average annual electricity consumption of about 90,000 households. Loibl Förderanlagen GmbH is supplying the complete ash handling and slag transport system for the project.
Ash removal and slag transport
Ash removal starts at the three boiler passes. The ash produced is collected via rotary valves and trough chain conveyors on the horizontal pass and the discharge screws on the 2&3 boiler pass and fed into the slag chute. The robust discharge screws are equipped with a high drive torque to reliably break up and transport away large lumps of ash during boiler cleaning.
Loibl grate fall-through conveyors are used below the combustion grate. These convey hot objects which fall through the grate, are conveyed through a water bath and seal the boiler from below against false air. The combustion residues after the grate fall through a heat-resistant chute into the deslaggers.
Downstream of the deslaggers, conveyor chutes are installed which are equipped with a coarse parts discharge system. Particularly large parts such as car rims or room safes are sorted out in order not to overload the installed conveyor technology. The fines fall through the bars and are transferred to an adjacent troughed belt conveyor via a collecting chute. For the troughed belt conveyor, Loibl supplies the rising support structure including catwalk.
The slag enters the slag hall via a 120 m long slag conveyor belt. Here, a cross belt conveys the slag to a moving conveyor belt, which distributes the slag evenly into the slag bunkers below. All troughed belt conveyors used are equipped with a collecting tray to catch trickling material and water in order not to contaminate the areas below.
SCOPE OF SUPPLY AND SERVICES
- Consulting and planning
- Basic and detail engineering
- Plant construction
- Production in Straubing, Bavaria
- Factory wiring of the conveyor belt
- Coordinated spare parts package
- Optional commissioning by Loibl
PLANT ENGINEERING CONSISTING OF
- Rotary feeders
- LASHCHAINCON® - trough chain conveyors
- LASHSCREWCON® - discharge screws
- Grate fall-through conveyors
- LASHBELTCON® - troughed belt conveyors (reversible and mobile version)
What is Energy-from-Waste?
Energy-from-Waste stands for the recovery of energy from waste incineration. Mixed waste always contains non-recyclable components. To prevent these materials from ending up in landfills, they are incinerated safely and with low emissions in waste incineration plants. The energy generated during incineration can be used to generate electricity as well as fed into the regional district heating network.
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