Seawater Plate Distillers 

Seawater Plate Distillers

Product Introduction:

DYF series plate type fresh water generator adopts the principle of vacuum distillation that conversion of seawater into fresh water, using the waste heat on the ships. The fresh water made can be used as boiler feeding water, living, deck washing water, etc. it can meet the daily freshwater needs of the ship. This equipment has automatic control, continuous hydraulic functions.

Product Features：

(1) High quality fresh water with low content of dissolved salinity.

(2) Seawater resistant and long life span by high grade titanium plates ensured and high efficiency of heat exchange.

(3) Compact structure and low weigh.

(4) Convenient for assemble and low maintenance costs.

(5) Automatic operation, combined with easy access to the interior.

Product Specifications: 

Outline Drawing : 

System Flow Diagram: 

Working Principle:

The seawater to be distilled evaporates at a temperature of about 38°C as it passes between the hot plates in the evaporator. The evaporating temperature corresponds to a vacuum of approximately 90%, which is maintained by the brine/air ejector.

The generated vapors pass through a demister where any entrained seawater droplets are removed and fall to the bottom of the distiller chamber. The vapors continue to the condenser where they condense into fresh water as they pass between the cold plates.

After being checked by the salinometer, fresh water of good quality is sent to the fresh water tank, while unqualified fresh water is discharged overboard.

Main Components:

1. Evaporator (Titanium plate)

The evaporator section consists of a plate heat exchanger and is enclosed in the separator chamber.

2. Condenser section (Titanium plate)

Same with evaporator section. the condenser section consists of a plate heat exchanger and is enclosed in the separator chamber.

3. Separator chamber (Cast bronze casing, stainless steel cover)

The separator separates the brine from the vapour.

4. Combined brine/air ejector (Cast bronze)

The ejector extracts the brine and incondensable gases from the separator chamber.

5. Ejector pump (Seawater pump)

Normally, the sea water pump is delivered by manufacturer, and the sea water pump is a single stage vertical centrifugal pump. This pump supplies the condenser with sea water and brine/air ejector with jet water as well as feed water from evaporator.

6. Condensate pump (Freshwater pump)

The freshwater pump is a single-stage centrifugal pump. The fresh water pump extracts the produced fresh water from the condenser, and pumps the water to the freshwater tank.

7. Salinometer Already assembled in the control panel.

The salinometer continuously checks the salinity of the produced water. The alarm set point is adjustable.

8. Control panel

Normally, the control panel is delivered by manufacturer. It contains motor starters, running lights, salinometer, contacts for remote alarm and is prepared for start/stop.

Range Of Application:

Suitable for fishing vessels, Marine cargo ships, ships, coastal industrial facilities, island resort/hotel/sea.