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Desalt DPU-2-36-C Series

Desalt DPU-2-36-C Series

Desalt DPU-2-36-C Series

Product catalog summary
Application
The DPU-2-36-C is a vacuum distillation system designed to convert seawater into high-quality freshwater for domestic and process use. It is suitable for installation on ships, rigs, and remote onshore locations, featuring automatic operation and control of freshwater quality.
Features
  • High energy efficiency and compact design.
  • Constructed with titanium plate heat exchangers and seawater-resistant stainless steel housing.
  • Integrated systems for condenser cooling, ejector water, and feed water.
  • Includes a freshwater pump and control system.
Benefits
  • Utilizes waste heat for high capacity.
  • Produces high-quality freshwater with low salinity, suitable for steam boilers.
  • Durable materials ensure a long lifespan and low maintenance costs.
  • Easy installation due to compact design and low weight.
Capacity Range
The DPU-2-36-C series offers a capacity range from 20 to 75 m3/24h, adjustable by varying the number of plates in the heat exchangers. It operates efficiently at cooling water temperatures of 32°C and jacket water temperatures from 55–90°C.
Working Principle
The system operates in two stages under vacuum conditions. Seawater is evaporated in stage one, with vapors passing through a demister to remove seawater droplets. The vapors then heat the feed-water in stage two, where they condense into freshwater. The process is maintained by a single ejector with three stages.
Installation
The generator is designed for automatic operation in unmanned engine rooms. It uses engine jacket cooling water or a hot water loop as the heating medium. The system includes a separate ejector pump for coolant supply and a control panel for operation management.
Basic and Additional Equipment
  • Includes titanium plate heat exchangers, a three-stage ejector, and freshwater pumps.
  • Additional equipment includes a cooling and ejector water pump, control panel, and optional steam heating systems.
Technical Documentation
Comprehensive manuals provide installation, operation, and maintenance instructions, including troubleshooting and spare parts information.
Service Support
Alfa Laval offers global service support, including maintenance assistance and training for operational personnel.
Dimensions and Weight
Detailed dimensions and weights for various models are provided, with additional weight considerations for operational conditions.
See more

Catalog excerpts

Desalt DPU-2-36-C Series-1

Desalt DPU-2-36-C SeriesTwo-stage titanium plate type fresh water generator Application Conversion of seawater into freshwater by vacuum distillation for the supply of high quality freshwater for domestic and process utilization. For installation onboard ships, rigs, and onshore remote locations. The DPU-2-36-C is designed for automatic operation with automatic control of freshwater quality. Features • High energy efficiency. • Simple and compact design. • Titanium plate heat exchangers. • Housing in non coated seawater resistant stainless steel. • Combined condenser cooling, ejector water and feed water system. • Freshwater pump and control system. Benefits • High capacity on waste heat available. • High quality freshwater, the low content of dissolved solids (salinity) ensures the supply of pure water which can be used directly as make-up for steam boilers. • Long lifespan, the high grade corrosion resistant materials, i.e. the titanium plates, ensure a long lifespan of the equipment. Alfa Laval fresh water generator type DPU-2-36-C. • Low operation and maintenance costs. Start-and-forget operation, combined with easy access to the interior, reduces man-hours required for operation and maintenance to a minimum. • Simple installation due to compact design, low weight and the possibility to assemble on the spot.

 Open the catalog to page 1
Desalt DPU-2-36-C Series-2

Capacity range The DPU-2-36-C series covers a capacity range from 20 to 75 m3/24h, depending on the heating medium and cooling water temperatures. The capacities shown in fig. 1 are capacities at a cooling water temperature of 32°C. The fresh water generator can be dimensioned to suit any jacket water temperature from 55–90°C at any cooling water temperature required. The quantity of freshwater produced can be altered simply by varying the number of plates in the internal plate heat exchangers. Fig. 1. Capacity range for fresh water generator types DPU-2-36-C100/C125. Working principle See fig....

 Open the catalog to page 2
Desalt DPU-2-36-C Series-3

Installation The DPU-2-36-C two stage fresh water generator is designed for automatic operation in periodically unmanned engine rooms and other automated operations. The heating medium (see fig. 3) is either engine jacket cooling water or a hot water loop heated, for example, by steam from exhaust gas boiler. The ejector pump is installed separately and has separate suction from the sea. This pump supplies coolant in the form of seawater to the condenser, feedwater for evaporation and jet water for the combined brine/air ejector. The freshwater produced is pumped to the tank by the built-on freshwater pumps. The...

 Open the catalog to page 3
Desalt DPU-2-36-C Series-4

DPU-2-36-C series Main dimensions and service area Alfa Laval reserves the right to change specifications without prior notification. How to contact Alfa Laval Up-to-date Alfa Laval contact details for all countries are always available on our website at www.alfalaval.com ALFA LAVAL is a trademark registered and owned by Alfa Laval Corporate AB.

 Open the catalog to page 4

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.