summary
At the site of Shell Netherlands Refinery, Evides Industriewater has constructed a process water plant which produces demineralised (demi-water) for supply to the cogen of Pergen (a subsidiary of Air Liquide). This cogen produces steam for delivery to Shell (700 t/hr) and generates electricity which is primarily supplied to electricity company Eneco (300 MW). Shell uses this steam in various production processes and to heat some buildings and certain storage tanks. The Pergen cogen replaced Shell´s 46 year-old Boilerhouse-4, which was still being fired with heavy oil residue. The gas-fired Pergen cogen makes a considerable contribution to the sustainability of the largest refinery site of Europe: emissions of sulphur dioxide (-99%), nitrogen oxides (-66%) and fine particles (-90%) are reduced dramatically.
Evides as partner for long-term demi-production
Pergen wanted to outsource the production and purchase of demi-water for its new cogen and sought a partner who was prepared to make the investment needed as well as to operate the demi-production plant. Evides Industriewater was selected to fulfil this role.
A few factors helped to determine this choice: Evides´ access to a wide portfolio of water qualities in the Rotterdam area enables it to realise the supply of various water qualities, while at the same time offering sufficient back-up capacity. Secondly, Evides Industriewater has a vast proven track-record with the realisation of such projects in the petrochemical industry according to the DBFO model (from design to operation). Additionally extensive experience has been built up within contracts of 10-20 year duration with the use of ion exchange technology for the production of demi-water. Finally, Evides Industriewater was prepared to pre-finance the investment for such a project.
project details
With a total capacity of 1,055 m3/hr this demi-plant is one of the bigger of its kind in Europa (quality demi-water: < 0,2 µS/cm). The feed of the plant consists of process water of high and constant quality. As a result the size of the plant is relatively limited, which was an advantage due to space limitations at the intended location.
For more details please refer to the brochure of this project.