Case Study
High temperature sealing for soot blower in coal-fired boiler
James Walker solution A unique construction of Lionpak ® 5100 at the top and bottom, with Lionpak ® 5501 parallel bevelled intermediate rings. This unique solution combines high purity graphite grades in the braided top and bottom rings with die moulded intermediate rings in parallel bevelled ring design at a 45 degree angle. Such a use of materials as well as design would enable the packing to withstand high temperature steam during soot blower operation and encourage higher contact force towards the lance tube to maximise sealability and service life during thermal cycling. ( Problem The existing packing had a very short service life, leading to increased maintenance and rising costs. Frequent adjustment was necessary, with replacement on average every 3 months. Appli