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Cast central pipe for high-temperature cyclones
FLSmidth’s cast central pipe improves separation and thermal efficiency, enabling your plant to save fuel and reduce power consumption. Use it to decrease energy costs or to increase production for a fast return on investment.
Save energy or increaseproduction
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Installation of a central pipe in thepreheater cyclones is essential for theoverall performance of the preheater.Delivering both improved separationand thermal efficiency, the FLSmidthcentral pipe saves fuel and decreasespower consumed on the ID fan drive,as the preheater gas temperature isreduced. By installing one cast centralpipe in the lower cyclone stages, thetypical fuel savings are between 5-10 kcal/kg clinker and the power consumption savings on the ID fan drive are between 4-8%.
Whether reductions in fuel and powerconsumption are converted into savings or increased production of typically 1-2%, the central pipe provides a fast return on investment.
Patented suspension systemincreases lifetimeA patented system for thesuspension of the cast central pipeconsiderably increases the pipe’slifetime. Corrosion is reduced as aresult of limited heat conductionacross the free-floating suspensionsystem, thereby reducing condensa-tion of salts that can corrode the heatresistant metal suspension. The system also offers easy handling of replacement elements,thus minimising downtime. Thanks to FLSmidth process knowhow and material technology, the elements have been optimised to provide the market’s best wear and corrosive resistance for temperatures up to 1100 °C.
Key benefits- Customized solutions
- Fast, easy installation
- Increased service life
- Profitable investment
Suspension
Normal element
Lock
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Customized design - for improved performance
Fast, easy installationThe cast central pipe’s modular designfits into any size of cyclone design –both new and existing cyclones,regardless of manufacture. The new cast central pipe is very easyto install since only one type of element is used to form any diameter.
The downtime required for installation is short, and no special tools or lifting equipment are required. Low mainte-nance and service requirements also contribute to its long-lasting, reliable design. The free-floating design is a result of ongoing research and development, combined with the years of practical experience gained from installing more than 1,200 cast central pipes worldwide.
Increased wear resistance by customized designFLSmidth has designed a 25mm element to improve the performance of the free-floating cast central pipe in the lower stages of the preheater. The 25mm elements can be combined with 15mm elements, which makes it possible to tailor the cast central pipe according to mechanical and chemical influences during operation.
Erosive wear affects the entire cast central pipe, but the wear can be higher in some areas than others. To prevent mechanical wear caused by quarts particles or other hard and erosive particles, the 25mm element can be used to upgrade the entire cast central pipe or only parts of it.By increasing the thickness of the element from 15 to 25mm, the complete free-floating cast central pipe is more resilient and has a longer service life.
15 mm element
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100%40% 25 mm elements
100% 15 mm elements
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Acumulated cost
Year
The graph illustrates the potential annual savings of the new 25mm element, when changing 40% of the 15mm elements to the more wear resistant 25mm elements. The graph is based on a standard Ø 5000 FLSmidth cyclone, with a five row cast central pipe design.
25 mm element
Cost comparison
Project Centre Denmark FLSmidth A/SVigerslev Allé 77DK-2500 ValbyCopenhagenTel: +45 3618 1000Fax: +45 3630 1820 E-mail: [email protected]
Project Centre USAFLSmidth Inc. 2040 Avenue CBethlehem, PA 18017-2188Tel: +1 610-264-6011Fax: +1 610-264-6170E-mail: [email protected]
Project Centre IndiaFLSmidth Private LimitedFLSmidth House34, Egatoor, Kelambakkam(Rajiv Gandhi Salai, Chennai)Tamil Nadu – 603 103Tel: +91-44-4748 1000Fax: +91-44-2747 0301E-mail: [email protected]
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Copyright © 2014 FLSmidth A/S. ALL RIGHTS RESERVED. FLSmidth is a (registered) trademark of FLSmidth A/S. This brochure makes no offers, representations or warranties (express or implied), and information and data contained in this brochure are for general reference only and may change at any time.