We are a traditional manufacturer of rotary air and gas-gas heaters including heating elements and a complete assortment of spare parts. Assembly fixtures are used for manufacturing rotors and heater stator boxes, which allows the complete assembly of these most important parts with diameters up to 20 metres.
Air heaters utilize waste heat to heat up the combustion air saving thus up to 1% for each 20°C of combusted air. We focus on production of packed regenerative air heaters (horizontal PH and SPH designs or vertical PX and SPX designs) and regenerative air heaters with a vertical shaft (CX - to be assembled at the construction site).
This is a fairly narrow and specific product group the technology of which requires a relatively considerable specialization. PBS INDUSTRY has a lot to offer in this field. This is made possible by a tradition of this dedicated production spanning more than 50 years. Our business partners are entities supplying this equipment for power units worldwide.
Our supplies are directed mainly to metallurgical industry, glass industry, boiler and furnace production, etc.
We specialise in production of regenerative gas-gas heaters, which utilize heat from non-desulphurised flue gas to heat up desulphurised flue gas. This solution considerably reduces or even completely eliminates energy consumption needed for this purpose.
For desulphurization of flue gas behind the boiler by the wet lime method or the regenerative method, it is necessary to heat the flue gas coming out from the absorber with temperature of approx. 50°C up to the so called chimney temperature, i.e. approx 90°C.
The materials used, the design, the cleaning device (soot blowing with pressure air and rinsing with high pressure water during operation) and other accessories meet all the requirements for resistance to operational conditions of desulphurization systems.
For more than 70 years we have been acquiring experience related to production of heating elements used by world manufacturers of air and gas-gas heaters for practically all types of the equipment.
Profiling of the heating elements is made on a modern automatic manufacturing line, the only one in the territory of the former Czechoslovakia. A special cutting system allows the plates to be cut with a tolerance of +/- 1 mm, which guarantees the high shape accuracy of the basket heating elements.
According to the customer's requirements we are able to provide heating elements in several versions of basket, depending on the rotor design and the environment.
For combustion of fuels with a higher content of sulphur, the heating elements used for the cold side of the rotary heater are protected from low-temperature corrosion by using CORTEN material or enameled coating for extremely high resistance in environments with sulphur acid. Endurance functional tests of enameled profiles in real environments proved that the operating life of the enameled heating elements is 4 times longer than that of the heating elements made from unprotected carbon steel. The enameled surface also reduces formation of deposits. The weight of deposits on the enameled profiles is only 15 - 40% of the weight of deposits on unprotected steel. Also the possibility of reducing the flue gas output temperature is important.