Copenhagen, Denmark
Case study – Port handling with explosion protection
Biomass transportInstallation location
Challenge
Conveying of explosive materials
Conveyed material
Wood chips
Year of construction
2019
Modules
individually adapted conveyor technology: Hopper and Hopper Cars
Special features
Movable steel construction, assembly and commissioning on site
Case study
Innovative transport solutions for power plants
For HOFOR, the largest utility company in Denmark, Loibl designed an economically efficient, individual solution for the transport of biomass (wood chips) from the port to the incineration plant at the end of 2019. HOFOR supplies around 20% of the entire Danish population with water, heat, electricity and gas. Loibl supplied a facility with a total weight of around 390 tons of technical equipment. It forms the interface between ship and stationary conveyor technology. Including two massive hoppers with an octagonal opening and a dust return wall attached. This special shape already reduces the amount of dust during the wood chip loading. Under the hoppers there are trough chain conveyors (LASHCHAINCON®) in a particularly heavy design and with a clear width of 2,000 mm. 800 m³/h of conveyed goods are withdrawn from each of these LASHCHAINCON®.
The feed hoppers are open at the top, this reduces the formation of an explosive atmosphere and ensures pressure relief in the event of an explosion. The material is withdrawn from the hoppers in the upper run of the trough chain conveyor below. A dedusting system automatically sucks up the dust generated during transshipment in the feed hopper and at the subsequent transfer points. Heavier dust particles are reliably transported away with the conveying flow.
Each of the so-called hopper cars removes a total of 1,600 m³ / h of material. In addition to the dust return, the hopper cars are equipped with dry extinguishing lines including spraying in the feed bunker and filters. In the event of a fire, the water is fed in by the local fire brigade with the dry fire line on the hopper car. In addition, a fire hose can be connected to a separate riser if necessary to extinguish fires on the hopper car. For cleaning, there are suction and wet cleaning lines on the hopper car, to which the operator can connect the corresponding equipment.
The hopper cars are coupled with the harbor cranes. This means that they can be moved individually and to any ship unloading position on the pier. During the unloading pauses, the clamshell bucket and multi-section grab can be safely placed on the hopper car.
Loibl's scope of Supply and Services
- Extensive engineering
- Production in Straubing, Bavaria
- Delivery of selected components
- Installation and commissioning on site
- Conveyor technology for biomass transport: Feed hoppers, Movable steel construction, LASHCHAINCON®: Discharge trogh chain conveyor, Control cabinet including cabling, Dry fire line, Suction and wet cleaning line, Filter system (dedusting) including pressure relief device
Projektgalerie
CHP - COMBINED HEAT AND POWER PLANTS
Combined heating and power plants are gaining in importance in connection with the striven fossil-fuel phase-out. Many power plant operators are already reacting to the ambitious climate targets of politics and are gradually converting their systems to renewable energies. The transition process works with combined firing from fossil fuels and renewable raw materials, mainly wood. In the long term, there should be a permanent switch to the combustion of renewable energies. In this phase it needs an experienced partner who reliably supports the energy producers and industrial users with the changeover.
OUR PROCESS ENGINEERING FOR A CLEANER ENVIRONMENT
In the Port of Copenhagen, 3,200 m³/h of biomass are handled daily at the Amagerværket power plant. The amount of dust that arises during loading increases the risk of ignition. With more than 60 years of experience in individually conceptualized bulk materials transport and as a competent partner in the field of fire-endangered and explosive bulk goods, Loibl developed an innovative, ATEX-compliant conveying concept that more than lived up to the expectations of the largest Danish energy supplier.
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