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| RX-SMART Helix-W |
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| Travel |
0,5 m - 8 m |
| Blowing medium |
Water |
| Blowing angle |
0-360 ° |
| Blowing element |
creep-resistant lance tube with high performance nozzle |
| Application area |
heat exchangers with heavy fouling |
| Temperature of application area |
< 1500 °C |
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Selective cleaning of convective heating surfaces using water in boilers fired with waste, biomass and RDF
Fuels with the most variable heating values and chemical compositions are used in incinerators and biomass boilers. Due to their tendency to develop complex deposits, waste, refuse derived fuels and biomass are seen as challenging energy sources. Incinerators and biomass boilers often have low steam parameters for the sootblowers. So intensive cleaning is not possible. The strong deposit build-up in the convective area can also mean that conventional steam sootblowers will not work effectively. Consequently, the fouling will continue to increase, causing unplanned downtimes and reduced boiler availability. |
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Our solution
RX-SMART Helix-W is a fully automatic cleaning system using water as the cleaning medium. It consists of a long retractable sootblower and a media supply unit with modules for the pump, for water inlet, water outlet and an automation unit.
RX-SMART Helix-W employs two gear motors, one for the axial and one for the rotational movements. This enables the cleaning system to precisely position the water jet in the gaps between the heat exchanger tubes and perform the cleaning. The cleaning takes place as the lance is rotated without axial speed. This so-called “Go-Stop-Clean-Go” mode avoids the water jet impacting on the metal surfaces and hence, avoids any thermal stresses on them. Sophisticated control of the water circuit ensures that the water jet will only be applied for cleaning and interrupted on the spot by a pressure-activated nozzle. If no cleaning is performed, the nozzle remains closed so that the water cools the long retractable sootblower in a closed cooling circuit. |
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The novel water
control allows
an immediate
build-up and
interruption of
the water jet for
cleaning – this new
cleaning method is
called the
“Go-Stop-Clean-Go”
technique. |
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Results of the utilization of RX-SMART Helix-W
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Vorher Nachher
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Your benefits
- Removal of complex deposits in convective heating surfaces
- Cleaning with water without thermal stresses on heat exchanger tubes (“Go-Stop-Clean-Go” mode)
- On the spot starting and stopping of the water jet for cleaning minimises the amount of water released into the boiler
- Even narrow passes are cleaned reliably
- Flue gas temperature remains in the rated range
- Extension of boiler availability
- More flexibility as to the fuel mix since cleaning intensity can be adjusted to the actual deposit situation at any time
- No steam required for cleaning
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