A Practical Manual On Sea Water Distillation
With A Description Of The Necessary Machinery For The Process

2l8 SEA WATER DISTILLATION. include a reasonable run of pipe for suction to the pump, and for the delivery of fresh water from the apparatus. 0) INSTRUCTIONS FOR WORKING THE APPARATUS. 112. The following general rules for working a treble distilling apparatus are stated shortly, but this is always given in very much fuller detail by the makers when they supply their own class or type of apparatus. (1) First of all, the boiler should be filled with sea water, the fire lighted, and steam got up just enough for working the pump. (2) The pump should then be started, and as soon as the circulation water passes through the condenser, the evaporators should be filled with sea water by means of the filling pipe, and as soon as a proper level has been obtained in the evaporators, the quick means of charging the evaporators with sea water should cease, and the feeding be left to the feed regulator to deal with. (3) The boiler steam may now be admitted to the first evaporator coils, and, if necessary, the steam valve and starting valve for the pump adjusted with each other, so that the pump goes at its proper speed. (4) In a short time the sea water in the first evaporator will boil, and the steam generated therefrom will then pass into the coils of the second evaporator, and also generate steam therefrom, which will pass up into the heater tubes, and thus be utilised in heating the various feed-waters on their way to their respective destinations. (5) The apparatus being in full work, it is necessary to see that the boiler pressure is not too high, as only suffi- cient pressure is needed to obtain the production specified, with the boiler steam valve full open. (6) It will probably take about half-an-hour for an