LCI group
Bosch
Formation
Export
Version française   English version

Industrial steam boiler UNIVERSAL UL-S, UL-SX

For medium to high steam or heat requirements, boilers are available in the capacity range of 1,250 to 28,000 kg/h.
Industrial steam boiler UNIVERSAL UL-S, UL-SX

The UL-S boiler model is a large-volume, three-pass boiler and meets all requirements in the medium and high output ranges.

In the cylindrical pressure vessel, the fire tube, the flooded gas inversion chamber, the 1st and 2nd tube runs are positioned to optimize the flow of fumes. The radiation and convection surfaces together produce a very fast water circulation and thus accelerate the transport of the steam bubbles to the steam chamber. The heat of combustion supplied by even heat transfer is quickly converted into steam without thermal stress on the material. The large water volume provides sufficient storage volume to cover possible peaks in demand.


TypeUNIVERSAL UL-SUNIVERSAL UL-SX
Transfert de chaleurVapeur saturée haute pressionVapeur surchauffée haute pression
ConstructionTechnologie à tube foyer et tube de fumées triple parcoursTechnologie à tube foyer et tube de fumées triple parcours
Puissance1 250 à 28 000 kg/h2 600 à 28 000 kg/h
Limite de surpression [bar]jusqu'à 30 barsjusqu'à 30 bars
Température maxi.jusqu'à 235 °Cjusqu'à 300 °C
CombustibleFuel, gazFuel, gaz

UNIVERSAL UL-S steam boilers are used in the manufacturing industry, the commercial sector or in public facilities.

  • Intuitive boiler control on a PLC basis with transparency of operational data
  • High efficiency due to three-pass technology, integrated economizer and thermal insulation
  • High pressure stability and steam quality even with strongly fluctuating steam requirements
  • The boiler can be equipped with a separate fourth path for waste heat utilization
  • The boiler can also be used as a recovery boiler for a cogeneration plant or gas turbine
  • SUCcess automatic start-up, provision and departure device
  • Suitable for many burners
  • Low-emission combustion through the use of state-of-the-art combustion systems and careful selection of the best boiler/burner combination
  • Easy commissioning thanks to pre-configured boiler control
  • Easy on-site wiring with plug-in connections

The secret of the lasting success of this series: our patent for the triple flue gas path system. The fire tube (1st path) and two sets of flue tubes (2nd and 3rd path) are perfectly integrated in the pressure body with the flue gas changeover chamber. Thanks to the lateral fire tube and the horizontal rear and vertical front inversion of the superheated gases, a large radiation and convection surface with a large steam volume is achieved with a small footprint. The bottoms are anchored to the fire tube and are connected to the boiler casing for balanced load distribution.

If overheated steam is required instead of saturated steam, a overheater module can be used on the front reversing chamber. A bypass valve continuously regulates the temperature of the overheated steam over a wide operating range. The flue tube bundles remain easily accessible through the front door.

  • Modular system, controlled on the flue gas side. No water injection required for superheated steam temperature control
  • Easy maintenance and installation. Easy cleaning of the second and third boiler path.
  • Long service life due to low thermal load of the entire overheater body

All of our high volume boilers with accessories are available as fully functional units. Standard equipment includes boiler pressure vessel, control and safety technology, burner block, feed pump module, connection box and control cabinet including BCO boiler control.

Base equipment

Variable according to the client's wishes

Associated boiler room elements 

  • Water conditioning module WTM
  • Water service module WSM
  • Condensate module CSM
  • Purge, expansion and cooling module BEM
  • Water analyzer WA
  • Flue gas heat exchanger ECO 1 (individual installation)
  • Flue gas heat exchanger ECO 6 (individual installation)
  • Expansion and heat recovery module EHM
  • Pump module PM
  • Expansion, heat recovery and water purge module EHB
  • Steam cooler VC
  • Gas control module GRM
  • Oil circulation module OCM
  • Oil supply module OSM
  • Oil preheating module OPM
  • Plant management system SCO