Vacuum System

      Vacuum packages are supplementary equipment in steam processing plants which help to improve the performance of the whole system by providing continuous low pressure in a medium.

     Specially meant for power generation plants these packages, which are consistent of non-rotating equipment such as; Ejectors, Heat exchangers, Condensers and monitoring apparatus, are distinguished as reliable operating under steady state continuous working conditions.

     These equipment are designed in separate stages which number is defined according to the capacity desired. In each stage, the steam passing through the ejectors provide vacuum pressure in the suction connection that is to be transferred to the condensers. The condenser will dissipate the heat to the medium in the tube side of the heat exchangers, and then it is discharged to downstream. The remaining steam in the condensers is guided to the next stage (by the ejectors) in which is to be condensed, while the mixing air is meant to be vented to atmosphere.

     Regarding to the process preformed, it is obvious that; the operation of the vacuum packages is most desired when a medium is to be single liquid phased while cooled simultaneously, which as an example can be found in steam power generation plants.

Advantages:

ü  Simple construction

ü  non-rotating parts

ü  Energy saving

ü  Wide range of condensers used

ü  Long life span

ü  Custom design

ü  Low maintenance

ü  High reliability

Types:

1-      Multi-stage vacuum pumps with direct contact condensers

2-      Multi-stage vacuum pumps with surface type condensers

3-      Hybrid systems