Installation of highly efficient steam trap assemblies
LLC "Paper Factory" Dnepropetrovsk - is a manufacturing company with many years of experience in the production of cardboard and paper products. The company was founded in 1914. The company has installed paper machines PMM-1 and PMM-2 for the production of various types of paper and cardboard.
During a comprehensive examination of the steam condensate system PMM-2, a number of design and technological problems were identified that impeded effective operation:
- the low surface temperature of some working cylinders;
- the presence of "wandering cylinders", i.e. low-temperature cylinders change positions;
- working cylinders are flooded with condensate due to problems with its removal, as a result of which it is impossible to increase the speed of rotation of the cylinders;
- low heat transfer coefficient from steam to paper due to the low quality of steam;
- overspending of steam due to spillage of steam on the water separators;
- lack of an automatic steam supply system for cylinder groups depending on the type of paper.
This steam trap is specifically designed to work with drying cylinders in paper mills and has the following characteristic features:
- prevents the formation of steam and air jams, which significantly reduces the start-up time and does not require drainage of steam jams during operation;
- the presence of the SCCV valve mechanism significantly extends the service life of the steam trap, since the valve is pressure-balanced and self-centering by the condensate flow when landing on the seat;
- the valve mechanism is located at the top of the steam trap, so the valve seat is less prone to wear and clogging with dirty condensate;
- the steam trap float is not tight, which increases the chances of restoring the capacity of the steam trap in systems with frequent water hammer;
- It has increased productivity, capable of pumping out condensate in full steam supplied to the cylinder during starting conditions.
After installing the new equipment, a significant increase in the surface temperature of the cylinders was achieved, a quick and high-quality condensate drain was provided, due to the emptying of the cylinders from the condensate, energy savings of up to 25% were achieved on the main drive. Steam consumption was significantly reduced and there was the possibility of increasing the speed of PMM.