fans for the steel industry - tlt turbo waste gas fan. silo air gas, oil ignition kiln sinter...

Fans for the Steel IndustryThe next generation of technology

a company of

More than 140 years of expertise in construction of fansPresent in 8 countries with own business locations and with 50 representatives across 40 countriesMore than 6000 installed fans worldwideLocations for manufacturing and development in Germany, USA, China and South AfricaTest stands in Germany, China and USAUse of the latest design tools like FEM and CFD

Pelletizing Plants

Sintering Plants

Converter with Wet and Dry cleaning Applications

Coke Dry Quenching Systems

Dedusting Fans

Gas Booster Fans

Photo: Phoenix West

Company Overview.

Fans for the Steel Industry.Typical arrangements.

Fans under hard operating conditionsFans in steel mills and steel works.

1873 First centrifugal flow fanfor mine ventilation

1950 First axial flow fan withblade adjustment for mineventilation

1985 First fan for "wet" flue gasdesulphurization

1997 First wind tunnel fan withCFRP-impeller

2007 Centrifugal fan with an impeller diameter of 5,3 m

2011 Fan for quietest aero-acoustic wind tunnel

2015 Centrifugal fan with 12,3MW required power

2016 First MVR Turbo Fan with ceramic hybrid bearing

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Innovations of TLT-Turbo GmbH

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TLT-Turbo check of facts

Difficult conditions like high speed, high and changing temperatures, dust load, high peripheral speed, wear andmuch more! How do you cope with these challenges?That is exactly the field of application, where our fans were applied.

Fans in steel plants are typical “centrifugal fans” (single ordouble flow). They can be found for example in converter dedusting plants (wet systems), sinter plants, dedusting systemsfor blast furnances and steel works, pellet plants and muchmore. Axial impulse fans are only installed in converter dedusting plants with dry cleaning systems.

As wear is always a problem the impellers have to be protectedwith different systems like compound plates or newly with spraysystems. The hardness increases up to approximately 75 HRS.The challenge of fans in steel plants is the fact, the fan has along period between maintenance outages. So, it is absolutely necessary, that the fan is optimized engineered for the application.

Behind every fan stands our high class product quality and thestrong fan brand. In order to provide our customers with theutmost products, our departments offer their best performance.Our R&D department provides their excellent engineering capabilities, followed by our project management with a guaranteed high process quality and finally a correct and unproblematic installation by our field service.

Pelletizing Plant.CAF – Cooling Air Fan

Indurating MachineHEF

WEF

WEF

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UDF

WRF CAF

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Scheme of a Pelletizing Plant.

Typical Data

volume flow: 130 - 607 m3/s

temperature: 25 - 40 °C

pressure increase: 6000 - 9400 Pa

shaft power: 1100 - 5000 kW

Special Features

Designed for high volume flows and ambient temperature.

Double inlet centrifugal fan with aerofoilblades or axial impulse fan

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Pelletizing Plant.UDF – Updraught Drying Fan WRF – Windbox Recuperation Fan

Typical Data





Special Features

Draws process gas (250-400 °C) from thehood above the second cooling zone intothe updraught drying zone.

Protected by hard-surfaced liners.

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Typical Data





Special Features

Handles hot process gas (300-400 °C).


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Photos: Pelletizing Plant MBA Brazil

Pelletizing Plant.WEF – Windbox Exhaust Fan HEF – Hood Exhaust Fan

Photo: furnace - Landschaftspark Duisburg

Pelletizing Plant MBR Brazil, Windbox- Recuperation Fan, Diameter: 5400 mm

Typical Data


temperature: 50 - 300 °C.



Special Features

Installed behind filter with lower dust content (ca. 100 mg/m3).

Double inlet fans with backward-curved blades.


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Typical Data





Special Features

Similar design features as the windbox exhaust fans.


An axial flow fan would also be possible(only without wear protection).

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Sinter Waste Gas Fan. Silo Air

Gas, Oil

Ignition Kiln Sinter machine

Crusher

Chimney

electrical precipitator

Exhaust Pipe

Fan

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Scheme of a Sintering Plant.

Photo: Landschaftspark Duisburg

Typical Data


temperature: 120 - 200°C



Special Features

Draws the process gas (120-200 °C)through the sinter machine and electricalprecipitator to the stack.

The gas contains highly abrasive dust (ca. 50-100 mg/m3).

The double suction impeller is equippedwith wear protection in form of hard-surfacing.

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Converter with „Wet“ Cleaning Application.

Converter Waste Gas Fan designed as a„Centrifugal Fan“

Waste Gas FanTypical Data:



static pressure: 20.000 - 28.000 Pa

Special Features:

Dust loaded with 1 g/m3 (build-up andwearing).

Gastight application, 52-66 % CO gas.

Blade and main disc of the impeller areequipped with wear protection.

Spiral of casing with additional wear protection.

Rotor designed for 35.000 load- cyclechanges.

Impeller with water cleaning system

Fan control: speed control via VFD.

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converter wastegas fan

flare

gasholder

converter

fresh air

scrubber

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Scheme of a Converter with wet cleaning application.

Converter with „Dry“ Cleaning Application.

Converter Waste Gas Fandesigned as an „Axial Impulse Fan“

Waste Gas FanTypical Data:


temperature: approx. 150 °C


Special Features:

Designed as „Axial Impulse Fans“ becauseof possible deflagrations in the plant.

Based on the deflagrations the stator partsare designed for a overpressure of 1,5 bar.

Higher tightness against the ambient areabecause of toxic parts in the gas composition

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converter

Pre-Separator

Heat recoveryboiler

fresh air

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Gas

Water

Steam

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Scheme of a Converter with dry cleaning application.

Coke Dry Quenching System.

Coke Gas Recirculation FanTypical Data:


temperature: approx. 175 °C


Special Features:

Designed as centrifugal fans with wearprotection on impeller and housing to protect the fan against the abrasive cokedust.

Operation behind cyclone.

Mostly double width, double inlet design,with impeller supported on both sides onan elevated concrete foundation.

These fans are controlled by speed andadditionally by inlet damper.

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Scheme of a coke dry quenching system.

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Coke Gas Recirculation Fan

Fan

cyclone

baghouse filtertube cooler

trolley

antechamber

coolingchamber

discharge

heat reco-very boiler

Water

pre-separator

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steam

Exchangeable compound plates (hard-facing plates)

Surface hardness: approx. 61 – 63 HRC

Wear protection.

Combination of compound plates with thermal sprayed load disk

Surface hardness of thermal spraying layer approx. 70 – 75 HRC

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Wear – What are favorable influences:

The reduction of the rotational speed

The smaller relative speed of dust particles to fan blades

The increase of material hardness

The shape of the blades

Wear – Where does it come from - What are TLT´s measures?

TLT´s measures to reduce wear due to dust:

Use of optimal backward curved steel plate blades

Installation of wear protection with a hardness until 75 HRC

TLT-longlife-thin layer tungsten carbide protection (HVOF - TLT H101)

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A Passion for Solutions.

Website

Germany . China . South Africa . USA

Austria . Chile . Hungary . India . Russia . South Korea

www.tlt-turbo.comor contact us via email at: [email protected]

Published by and copyright © 2018: TLT-Turbo GmbH.All rights reserved. Trademarks mentioned in this documentare the property of TLT-Turbo GmbH, its affiliates, or their respective owners. Subject to change without prior notice.

Please find all contacts on our website:

TLT-Turbo GmbH . HeadquartersGleiwitzstrasse 766482 Zweibrücken/GermanyPhone: +49 6332 808-0

Business Location w/ Manufacturingand Service Workshop

TLT-Turbo GmbH . GermanyTLT-Turbo (Sichuan) Co., Ltd. . ChinaTLT-Turbo Africa . South AfricaTLT-Turbo Inc. . USA

Business Location

TLT-Turbo Rep. Office . AustriaTLT-Turbo South America SpA . ChileTLT-Turbo Rep. Office . ChinaTLT-Turbo Rep. Office . HungaryTLT-Turbo India (Pvt.) Ltd. . IndiaTLT-Turbo Rep. Office . RussiaTLT-Turbo Korea . South Korea

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fans for the steel industry - tlt turbo waste gas fan. silo air gas, oil ignition kiln sinter...

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