Sea Water Cooling System

A typical direct sea water cooling system is shown in Figure 9-2. Because of the large volume of water intake for cooling, water is pumped from the sea to an inlet sump through a battery of low lift pumps. Sea water next flows through a system of bar screens, scrapper screens, and rotary screens to the suction of the high lift pump manifold. The screen system prevents entry of marine life, seaweed, algae, and the like into pump suction. To prevent growth of algae and fungi and suppress microbial activity, chlorine is injected (0.5-1.0 ppm) into sea water before it enters the suction of the high lift pump battery. As sea water is very corrosive, reinforced concrete pipes are used for all piping greater than 30 in. diameter.

COOLING WA1ER RETURN

COOLING WA1ER RETURN

Seawater Cooling System

SAND FILTER

Figure 9-1. Refinery cooling water system.

SAND FILTER

Figure 9-1. Refinery cooling water system.

Was this article helpful?

0 0

Post a comment