He became eloquent, describing his tribulations working an evaporator on a vacuum.
The concentration of the liquid is done in vacuum, or in an evaporator.
The lye should never be fed into the evaporator in the acid condition.
It is noteworthy that superheated steam is not desirable for working an evaporator.
A damper in pipe is an advantage to check draft and control heat, and pipe should be at least one foot from evaporator.
The evaporator consists of a separate system of six copper tubes, each twelve feet long and three inches in diameter.
The water vaporizes and is led from the dome of the evaporator to the head of the condenser.
There was a fine wood fire under the evaporator, and from it steam was rising.
He saw them draw the golden syrup from one end of the evaporator and fill shining tin cans with it.
The water level is maintained in the evaporator until it contains a certain amount of salt.