Wear-protected rotary valve for 60 t/h dry lignite

Coperion GmbH from Weingarten/Germany recently supplied and successfully commissioned a wear-protected rotary valve for the RWE Power AG Ville/Berrenrath, Germany coal refinery. The rotary valve type ZXQ with a dia­meter of 600 mm feeds dry lignite into a pneumatic conveying system that transports the material from a new vertical roller mill to the storage silos. The conveying pressure of the system ranges from 0.9 to 1.1 bar. The rotary valve is designed for a capacity of 60 t/h.

From the outset, this application has demonstrated the advantages of a rotary valve over screw pumps that are normally used for feeding. So the rotary valve does not constitute a potential igniting source, as the circumferential speed at the normal operating rate is below 1 m/sec. The valve is also available in a flame resistant version. With an operating power requirement of only 4 kW tremendous electrical power savings are possible. Simple maintenance and long maintenance intervals lower operating costs even further. Due to its lightweight design and low operating speeds the valve only requires a compact, simple foundation. These features also result in lower noise emissions.

www.coperion.com

Related articles:

Issue 2013-01

Rotary valves for a variety of applications

Rotary valves have always been used for discharging and volumetric feeding powdery or granular materials from silos, hoppers, filters or cyclones. WAM® offers high-quality, market-oriented rotary...

more
Issue 2019-6 RU 2 682 910 C1

Loading device of shaft furnace

(22) 06.03.2018 (45) 22.03.2019 (57) Field: mining. Substance: invention relates to a lime kiln shaft furnace. Shaft furnace contains the shaft of the furnace with a loading device placed in it, while...

more
Issue 2011-06

Dense phase pneumatic conveying of abrasive materials

Gericke now offers an improved cone valve (type K5 and K6) which is especially suitable for applications with abrasive materials, high pressures and high temperatures (Fig.). The valve shows excellent...

more
Issue 2009-04 Companies & Products

Cascade classifier for cost-efficient reduction of filler

On the basis of many years of experience in the grading of various materials (including MDF fibers, sawdust, building and demolition waste, ballast and general refuse), a good few years ago Scheuch...

more
Issue 2016-5 SILOBAU THORWESTEN

Silobau Thorwesten delivers new pulverized lignite silo to Rheinkalk

In order to secure the fuel supply for the rotary kilns used for the production of quicklime in the Flandersbach plant, Rheinkalk GmbH has commissioned S­ilobau Thorwesten with the construction of a...

more