IMPROVEMENTS IN EVAPORATING APPARATUS
Year: 1885

page_text: I HENRY HARRIS LAKE, of the firm of Haseltine, Lake, and Co; Patent Agents,
Southampton Buildings, in the County of Middlesex, do hereby declare the nature
of my invention for "IMPROVEMENTS IN EVAPORATING APPARATUS
" to be as
follows:-
This invention relates to evaporating apparatus, and has for its object to produce
a simple and effective apparatus adapted for use in evaporating and concentrating
liquids, such for instance as liquid dyes.
I heat the liquid which I desire to evaporate and concentrate by means of heat
radiated from a pipe or pipes through which a beating agent is circulated and I also
circulate air in contact with the liquid under treatment.
My improvement consists in the combination in an evaporating apparatus, of a
chamber for containing liquid to be evaporated, pipes for conveying a heating agent
through the same, and other pipes or conduits whereby air may be caused to
circulate in, and through, the chamber.
My improvement also consists in the combination in an evaporating apparatus
of a chamber for containing liquid to be evaporated, diaphragms in the chamber
over which the liquid to be evaporated may flow, pipes for conveying a beating
agent through the chamber, and pipes or conduits whereby air may be caused to
circulate in and through the chamber.

page_text: Improvements in Evaporating Apparatus.
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co, Patent Agents,
Southampton Buildings, in the County of Middlesex, do hereby declare the nature
of this invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
The object of this invention is to produce a simple and effective apparatus
adapted for use in evaporating and concentrating liquids such for instance as
liquid dyes.
I heat the liquid which I desire to evaporate and concentrate by means of heat
radiated from a pipe or pipes through which a heating agent is circulated and I also
circulate air in contact with the liquid under treatment.
The said invention consists partly in the combination in an evaporating apparatus
of a chamber for containing liquid to be evaporated pipes for conveying a heating
agent through the same and other pipes or conduits whereby air may be caused to
circulate in and through the chamber.
It also partly consists in the combination in an evaporating apparatus of a
chamber for containing liquid to be evaporated, diaphragms in the chamber over
which the liquid to be evaporated may flow, pipes for conveying a heating agent
through the chamber, and pipes or conduits whereby air may be caused to circulate
in and through the chamber."
In the accompanying drawing Figure 1. is a longitudinal vertical section of an
apparatus embodying my improvement. Figure 2 is a transverse vertical section
of the same. Figure 3 is a horizontal section of the same taken at the plane of the
dotted line xx Figure 2. Similar letters of reference designate corresponding parts
in all the figures.
A designates a chamber which is shown as of rectangular form and may be made
of metal or any other suitable material.
In this chamber A are diaphragms B B¹ B* over which the liquid to be
evaporated is intended to travel while being evaporated or concentrated. These
diaphragms may advantageously be made of sheet metal.
The diaphragms B incline downwardly widthwise of the chamber A from the
center outwards some distance and then incline upwardly to the side walls of the
chamber. At the lowest part are perforations or openings.
The diaphragms B¹ B³ extend from the side walls of the chamber at a downward
incline towards the center, a space being left between the openings.
The diaphragms B and the diaphragms B1 B2 alternate from the top to the bottom
of the chamber A.
The bottom of the chamber A is shown as inclined from the side walls toward
the center.
Liquid to be evaporated or concentrated is admitted at the top of the chamber
and trickles thence over the partitions and from each to the next below until it
reaches the bottom of the chamber. By the time it arrives there it is intended
to be concentrated to the desired degree. It may be removed from the bottoin of
the chamber in any suitable manner.

page_text: CC designate two sinuous pipes consisting severally of straight sections and
connecting return bends. They are arranged at a short distance from the side walls
of the chamber A and, as shown, extend laterally in a zig-zag manner. Steam, hot
water, heated air or other heating agent is circulated through these pipes and the
radiated heat conduces to the evaporation or concentration of the liquid in the
chamber. As shown these pipes extend in such position relatively to the portions
of the diaphragms from which the liquid being treated flows, that the liquid in
escaping from the diaphragms will trickle over the pipes.
Outside the side walls of the chamber A are receptacles D to which air is
supplied. This air will preferably be dried either by treatment with chemicals or
otherwise and also heated.
The two receptacles D may advantageously be connected as for instance by a
pipe or pipes D₁ and then they can be supplied by a single pipe D². Numerous
openings c are made in the side walls of the chamber below the diaphragms and
through these openings the air passes from the receptacles into the chamber.
The heated air admitted to the chamber escapes through pipes d extending from
the chamber below the diaphragms B through the receptacles D into receptacles F
arranged outside the receptacles D,
The receptacles F may be connected by a pipe F¹ and then the air which enters
them may be carried away by a single pipe F. Water formed by the condensation
of vapor in the air is condensed away by a pipe F³.
The air passes from the receptacles D into the chamber A under the several
diaphragms B B and circulating around the inner edges of the said diaphragms
escapes through the pipes d below the diaphragms B.
The air circulated through the chamber A not only concentrates the liquid in the
chamber by heating it but also by absorbing and taking up moisture from the
liquid.
Having thus particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is;
First. In an evaporating apparatus the combination of a chamber for containing
liquid to be evaporated, pipes for conveying a heating agent through the same, and
pipes or conduits whereby air may be caused to circulate in and through the
chamber, substantially as specified.
Second. In an evaporating apparatus the combination of a chamber for containing
liquid to be evaporated, diaphragms over which the liquid to be evaporated may
flow, pipes for conveying a heating agent through the chamber, and pipes or
conduits whereby air may be caused to circulate in and through the chamber,
substantially as specified.
Dated this 10th day of ML 1000
HASELTINE, LAKE & Co.,
Agents for the Applicant.