IMPROVEMENTS IN APPARATUS FOR EVAPORATING OR CONCENTRATING LIQUIDS
Year: 1879

page_text: PROVISIONAL SPECIFICATION left by Charles Denton Abel at the Office
of the Commissioners of Patents on the 14th August 1879. A communication
from abroad by Julius Weber, Friedrick Curtius, and Julius Curtius, all of the
Firm of E. Matthes and Weber, of Duisburg, in the German Empire..
#
CHARLES DENTON ABEL, of No. 28, Southampton Buildings, Chancery Lane, in
the County of Middlesex. IMPROVEMENTS IN APPARATUS FOR EVAPORATING OR
CONCENTRATING LIQUIDS." [A communication from abroad by Julius Weber,
Friederick Curtius, and Julius Curtius, all of the Firm of E. Matthes and Weber,
of Duisburg, in the German Empire.]
According to the present Invention an apparatus for the continuous concen-
tration of liquids by evaporation is constructed of a long tank divided by trans-
verse partitions into a number of separate compartments which communicate with
each other by a vertical channel in each partition, open at bottom to the one com-
partment and at top by a side opening to the next one, such communications
being arranged at alternate ends of the successive partitions, so that the liquid in
flowing consecutively through the several compartments has to travel in a serpentine
direction from the one to the other. Through the several compartments is led a
steam pipe also arranged in a serpentine direction, that is, passing into one com-
partment at one end and out of it at the other end, and the steam is made to pass
through the pipe in the contrary direction to that in which the liquid flows
through the compartments, so that the liquid that has passed through all the com-
partments is heated by the hottest steam in the last one where it is already in a
concentrated state, and from which it is lead to wherever required by a pipe pro-
vided with a stop cock. In order to utilize the heat of such concentrated liquid, it
may be made to flow into a receptacle in which is a coil of pipes through which
the liquid to be concentrated is caused to flow on its way from the reservoir to the
first compartment, there being however also a pipe by which the liquid can flow
directly from the reservoir to the first concentrating chamber without passing
through the heater.
The communication between the last concentrating chamber and the last but
one can be closed by a cock or valve, and the steam pipe is provided at such last
chamber with stop valves whereby the part within the chamber can be cut out of
the circuit, in order that should from the continuous concentration solid matter
become deposited in the chamber, it can be cut off from the others without

page_text: interrupting the process therein and be cleared of its deposit. For the latter
purpose a discharge pipe with valve is provided in the bottom of the compartment,
and an opening closed with a screw cap is provided in the side thereof for the
introduction of clearing tools.
The whole of the evaporating tank is closed at top by a cover between which
and the tops of the partitions there exists a small space, so that the vapour can
find its way from each compartment to a central escape pipe or flue leading up
from the cover. The cover has a manhole over each compartment closed by a lid,
through which access can be gained to the interior for examination of the contents
and for cleansing-purposes. The steam heating pipe after traversing the first com-
partment leads back again into the boiler, so that the water of condensation can
How back again into the latter, valves being however provided whereby such com-
munication can be cut off, and the water of condensation be led off elsewhere until
the contents of the last compartment have been raised to boiling point and the
circulation of the steam in the proper direction has been established.