Accumulation lake Modrac is formed in 1964. by construction of a dam at the strait Modrac. The lake is formed by the rivers Spreča and Turija and their tributaries.
The dam Modrac is poliarc reinforced concrete dam, that consists of ten arches (cylindrical shells), nine buttresses and two gravitational bank supports.
Bucket Wheel Excavators (BWE) are continuous cutting machines for soft to semi hard materials like clay, sand, gravel, marl and their blending as well as lignite and hard coal. The characteristic parts of a Bucket Wheel Excavator are the cutting wheel with buckets, the wheel boom, the superstruc-ture with counterweight boom, the sub-structure, the undercarriage with crawler tracks and a transfer boom to the bench conveyor (or a connecting bridge to the loading unit). All main parts are designed to meet the demands of the project re-garding optimization, standardization and maintenance.
Existing plant consist of a fixed- bed reactor which was originally designed as a two zone reactor operated with Benzene feed. The existing Benzen Feed System was to be modified to mix super heated butane with air and to feed a uniform air-butane mixture to the reactor instead of benzene. Atmospheric air is filtered and compressed to 2.35 bar by motor driven centrifugal air compressor. The Start Up Heater is not used normally. However for plant startup, it is used to preheat the compressed air to the desired temperature.
