GreCon fire prevention concept protects endangered milling processes

The individual GreCon fire prevention concept protects endangered milling processes at the cellulose specialist JELU based in Rosenberg

Wherever inflammable materials are processed in finely distributed form, fire and explosion incidents with serious consequences may result for different reasons. Thanks to the solutions of spark detection and elimination tailored to the respective needs of the customers, it is possible to prevent effectively any personal injuries and material damages as well as costly production downtimes.

Cellulose – versatile in use, complex production
Cellulose is a versatile raw material which is used in all industries; in the food industry (e.g. for dairy products and pasta), in the technical industry (e.g. as binding agent for mortar and plaster) or for the processing of feeding stuff. To manufacture this purely natural product, numerous processing steps are necessary. Purified fibre extracts, out of which the cellulose is dissolved and afterwards milled, are used as raw material. Fibres the size of which exactly matches the respective type of use are important factors for a good quality.

Fire hazard due to foreign bodies and mechanical processing
To produce uniform wood chips milling processes carried out by the mills are necessary. These processing steps contain many fire hazards. Fine dust, oxygen and ignition sources in form of sparks or hot particles are mixtures that easily cause a fire. If foreign bodies as stones or nails enter the quickly running crushing mills, flying sparks cannot be avoided. Moved system parts, as e.g. fans, often strike sparks for example due to wear. As a result, a spark is transported through the suction system of the mill into the downstream systems as a preseparator or a filter system where it may cause fire or dust explosions. Also the mill itself is in danger. If the material accumulates, an overheating may result.

A protection concept specifically tailored to the needs of the customer
After having installed the first spark extinguishing system at JELU already in 1982, the protection concept was continuously expanded. In 2005, all control stations of the old generation were modernised with the new generation of spark alarm stations.

If a spark or a hot particle is detected, the corresponding area of the system is immediately switched off and the automatic extinguishing is activated. “We could reduce the fire hazard significantly. GreCon spark extinguishing systems exclude 99 – 99.5 % of all fires in production before a fire breaks out”, says Hubert Ehrler.

The mill itself was also equipped with an automatic extinguishing system. If the system is switched off, the mill continues running up to one minute and stirs up dust which is a great danger in connection with oxygen and the ignition source. After a short check, the mill is started again and production can be continued after a minimal interruption.

Figure 1: The highly sensitive GreCon spark detectors 1/8 protect the mills of JELU in Rosenberg

Besides the highly sensitive spark detectors FM 1/8 for the detection of sparks and hot particles in transport lines, also detectors of the type DLD 1/8 which are insensitive to daylight are used at JELU for the monitoring of systems with daylight incident. Furthermore, also flame detectors are used. They monitor whole areas as the building of the mill from a long distance.

Figure 2: JELU could reduce the fire hazard significantly thanks to the GreCon spark extinguishing systems

“The investment in GreCon spark extinguishing systems definitely paid off. We are very satisfied with the protection concept specifically tailored to our needs and will protect also other areas as the transport lines to the newly built hall with GreCon spark extinguishing systems“, Hubert Ehrler summarises the situation.

MTI auf der Powtech 2017: Neuer Labormischer für die Lebensmittel- und Pharmaindustrie

Detmold, August 2017 – Auf der Powtech 2017 präsentiert  MTI Mischtechnik eine komplett neu entwickelte Labormischerreihe für die Pharma- und Lebensmittelindustrie. Sie erfüllt die sehr hohen hygienischen Anforderungen dieser Branchen und kann flexibel auf spezifische Erfordernisse unterschiedlicher Anwendungen zugeschnitten werden. Die auf dem Messestand 1-254 in Halle 1 gezeigte Ausführung wurde im Auftrag eines Branchenführers konfiguriert, der sie für die Rezepturentwicklung in der Milch verarbeitenden Industrie einsetzen wird. Ein weiteres Exponat von MTI ist ein Vertikal-Universalmischer des Typs UT 250 mit 205 Litern Nutzvolumen, ebenfalls in hochwertiger Ausführung. Darüber hinaus stellt MTI die aktuelle Erweiterung der Kapazitäten seines R&D-Centers vor, mit der das Unternehmen seine Flexibilität bei der Entwicklung kundenspezifischer Maschinenkonfigurationen und bei der Durchführung von Pilotproduktionen noch weiter steigern wird.

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SWR Engineering: Continuous measurement of large mass flows without old-fashioned, mechanical techniques

Baffle plates for continuous measurement of bulk flow rates are used in many plants, where solids are handled in the processes. This mechanical technique offers many advantages compared to partial weighing of bulk solids because no more material has to be taken out of the process. Nevertheless, baffle plates entail some disadvantages, especially during the installation. Those disadvantages are eliminated with the MaxxFlow HTC by SWR Engineering as a system for the solid flow metering.

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thyssenkrupp liefert Bandförderanlage für neue unterirdische Kupfermine in der Mongolei

Eine der reichsten unterirdischen Kupfer-Lagerstätten der Welt wird durch den Einsatz von Hochleistungsbandanlagen von thyssenkrupp schon bald wirtschaftlich nutzbar. Als einer der weltweit führenden Anbieter von Tagebau-Anlagen wurde der Geschäftsbereich Industrial Solutions kürzlich mit der Lieferung eines Fördersystems für einen neuen Untertagebau in Oyu Tolgoi in der Mongolei beauftragt. Der Auftragswert liegt im höheren zweistelligen Millionen-Euro-Bereich. Zum Lieferumfang gehören neun Förderbänder mit einer Gesamtlänge von 9,5 km sowie sieben Transfertürme mit einer Förderkapazität von bis zu 7.100 t pro Stunde. Voraussichtlich im Jahr 2020 soll erstmals Kupfererz im Untertagebetrieb abgebaut werden. Der Oyu Tolgoi Minenkomplex ist ein Joint Venture der mongolischen Regierung und dem kanadischen Bergbauunternehmen Turquoise Hill Resources, an dem Rio Tinto mehrheitlich beteiligt ist.

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thyssenkrupp to deliver conveyor system for new underground copper mine in Mongolia

One of the richest underground copper deposits in the world will soon be accessed with the help of high-capacity gearless driven conveyors from thyssenkrupp. As one of the leading global providers of mining systems, the Industrial Solutions business area has won a contract to supply a material handling system for the new Oyu Tolgoi underground mine in Mongolia. The contract value is in the higher double-digit million euro range. thyssenkrupp will supply a total of nine conveyors with a combined length of 9.5 km as well as seven transfer towers operating at a design tonnage of 7,100 tons per hour. First production from underground is expected in 2020. The Oyu Tolgoi mine complex is a joint venture between the Government of Mongolia and Turquoise Hill Resources, which is majority-owned by Rio Tinto.

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Dos Santos International Celebrates 20 Years of Business

Marietta, GA – The business built from the ambitions of a young Portuguese immigrant is celebrating 20 years in operation. Joe Dos Santos, the Founder and President of Dos Santos International, was brought to the land of opportunity in 1959. He dreamed of starting a family company. That dream became a reality on July 7, 1997 when he started DSI.

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MTI-Mischtechnik: New laboratory mixer for the foodstuffs and pharmaceutical industries

Detmold, Germany, August 2017 – At Powtech 2017, MTI Mischtechnik presents an all-new line of laboratory mixers developed for the pharmaceutical and foodstuffs sectors. The design corresponds to these industries’ very exacting hygiene requirements; the systems can nevertheless be flexibly adapted to the special needs of diverse applications. The model shown at stand 1-254 in hall 1 was configured at the request of an industry leader who will use it for recipe development in dairy processing. A further highlight is MTI’s UT 250 vertical universal mixer having a working volume of 205 liters; this unit, too, is built to a very high standard. In addition, MTI presents the latest capacity expansion of its R&D Center that will provide further flexibility gains in developing customer-specific machine configurations and in implementing pilot production runs.

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SWR engineering: Mengenmessung bei unterschiedlichsten Masseströmen – in den verschiedensten Anwendungen

Schüttgüter werden in den unterschiedlichsten Branchen und Prozessen verarbeitet. Dabei spielt die Mengenmessung eine wichtige Rolle. Allerdings ist Schüttgut nicht gleich Schüttgut und es kann zu den unterschiedlichsten Anforderungen je nach Branche und Material kommen.

Die von SWR engineering Messtechnik GmbH entwickelten Sensoren PicoFlow, SolidFlow 2.0 und MaxxFlow HTC bieten Mengenmesslösungen für die unterschiedlichsten Masseströme. Angefangen bei 0,1 kg/h bis zu 350 t/h, werden sie in vielen Branchen eingesetzt.

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REMBE: Explosion Safety Days – Spray Dryer

Meet the EX-perts!
Due to some devastating recent events, increased awareness in safety amongst operators as well as manufacturers and emphasized standards, finding the appropriate protection against explosion and fires in spray dryers has gained importance for both new and existing plants.

We at REMBE® GmbH Safety + Control are one of the leading global suppliers for safety solutions and understood through our daily business the wish of operators and OEMs for a neutral event to exchange experiences and protection approaches.

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