In coking plants (coke batteries), coal is degassed and coke is produced for use in blast furnaces. When the coke is pushed into transfer cars, hot exhaust air flows are generated temporarily and are dedusted in filter plants with an upstream mass cooler.
The dimensions of the mass cooler ensure that exhaust air temperature peaks are capped, and subsequently the heated cooler packets prevent dew points from being subsequently undercut.
After crushing (where applicable), coke is screened in order to sort it into different varieties according to application. The dust that is produced during this process must be collected and separated.
The Scheuch IMPULS filter is a high-capacity filtering separator that delivers outstanding cleaning performance combined with an excellent degree of separation. It is used for the dry separation of solid matter, primarily in the extraction of contaminants from machinery and the workplace, as a process filter in material recycling, or for conveyed material separation purposes.
Thanks to the specially shaped twin nozzles on the jet pipe, the pulsed free jet pulls along an envelope of clean gas from the primary compressed air as it makes its way to the injector. The two gas flows are mixed in the injector by means of pulse exchange an, at the same time, experienceing significant increase in pressure. This ensures highly efficient cleaning throughout the bag length and filter bags require cleaning less frequently.
Proven in practice for decades, the IMPULS cleaning system has become a byword for low operating costs:
A plant's ability to demonstrate a high level of safety and reliability is essentially dictated by its key components. The radial fan is one of the components at the heart of every extraction, dedusting, exhaust and flue gas purification, and pneumatic conveying system. It helps to meet customer requirements with a level of quality that guarantees fault-free operation and excellent performance between maintenance intervals.Drive designs:
Despite offering higher performance, this enhanced range incurs costs that are lower by around a third as compared to fans with a coupling drive – it also takes up less space. Even when combined with a frequency converter, it represents a less expensive alternative to fans with belt drives. The range has been designed and calculated in line with the latest findings in the field of fluid mechanics:
Using a mass cooler makes it possible to "cap" short-term temperature peaks in exhaust gases. In turn, this opens up advantages such as the ability to use less expensive filter media.
Temperature peaks occur during extraction in metallurgical processes such as charging and tapping, or when exothermic substances are added to melts. It is particularly necessary to avoid temperature peaks during the ejection of coke from coke batteries; in this situation, the mass cooler also functions as a heat storage device. The heat energy stored when the temperature peak occurs is subsequently returned to the exhaust gas, which protects downstream plant components from corrosion caused by undershooting of the dew point.
The plate stacks incorporated into mass coolers have been calculated to produce optimum thermal characteristics. Depending on the required cooling output, the design focuses on either free-standing coolers or individual mass cooler packets in extraction lines.