Improvements in Evaporating or Concentrating Apparatus.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in Evaporating or Concentrating Apparatus.
We, JoHN MCNEIL, of the Colonial Ironworks, Helen Street, Govan, in the
County of Lanark, North Britain, Engineer, and JULIUS LEWKOWITSCHI, of
Lancaster Avenue, Manchester, in the County of Lancaster, Chemist, do hereby
declare the nature of this invention to be as follows, that is to say: -
.
Our said invention has for its object to improve the construction and action of
apparaus for evaporating or concentrating liquids, more especially such as, when
heated, deposit crystalline or other solid matters.
Our improved apparatus comprises a closed metal vessel made with a dome-
shaped top in which is an opening provided with a door, also an outlet for steam or
vapor, connected to condensing apparatus in which a vacuum is maintained.
The liquid to be operated on is introduced through a valved inlet in the side of
the vessel. The vessel is relatively of considerable height and is only about half
filled with liquid when charged so that there is a large vapor space above the
liquid.
In the lower part of the vessel there is fitted to rotate on a horizontal axis a
heater consisting of two hollow end disks connected by an annular series of
tubes fixed into them near their circumferences. Steam is admitted to one end disk
through a trunnion fixed to it and extending through a stuffing box to the outside of
the casing and through a trunnion fixed to the other end disk and extending through
a stuffing box water of condensation finds egress. The connecting tubes are fixed
with a slight twist or inclination so that as each rises water in it may run to the
disk to which the egress trunnion is fixed; and in this disk there are radial parti-
tions which carry up water as they rotate and lead it into the trunnion.
As the operation proceeds saline or other solid matters would become
deposited on the tubes, but are continuously removed by means
scraping rings each fitted Onl in two or more pieces. The rings on
each tube are connected so as to be at suitable distances apart; and as
the heater rotates each set is moved to and fro along its tube by means of helical
guides fixed within the vessel.
of
For discharging the saline or other solid matters, which may be done whilst
the evaporation or concentration proceeds, the bottom of the vessel is provided
with a valved outlet.
Dated this Twenty-seventh day of December 1897.
EDMUND HUNT,
Applicants' Agent.

page_text: Improvements in Evaporating or Concentrating Apparatus.
We, JoHN MCNEIL, of the Colonial Ironworks, Helen Street, Govan, in the
County of Lanark, North Britain, Engineer, and JULIUS LEWKOWITSCH, of
Lancaster Avenue, Manchester, in the County of Lancaster, Chemist, 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, that is to say:
Our said invention has for its object to improve the construction and action of
apparatus for evaporating or concentrating liquids, more especially such as when
heated, deposit crystalline or other solid matters.
And in order that our said invention and the manner of performing the same
may be properly understood we hereunto append a sheet of explanatory drawings to
be hereinafter referred to in describing our improved apparatus.
Figures, 1, and 2, are respectively a horizontal section, and a vertical section
of our improved apparatus, and Figure, 3, is a transverse vertical section of a detail
in connection therewith. In these drawings the same reference letters and
numerals are used to mark the same or like parts wherever they are repeated.
Our improved apparatus comprises a closed metal vessel, A, made with a dome
shaped top, B, in which is an opening, C, provided with a man-door, C1, also
an outlet, D, for steam or vapor connected to condensing apparatus (not shown)
in which a vacuum is maintained. An eye glass, E, is also provided for the
purpose of inspecting operations within the vessel, A. The liquid to be operated
on is introduced through a valved inlet, F, in the side of the vessel. The vessel, A,
is relatively of considerable height, and is only about half filled with liquid when
charged, so that there is a large vapor space above the liquid.
In the lower part of the vessel, A, there is fitted to rotate on a horizontal axis
by means of gearing, G, a heater, H, consisting of two hollow end disks, H 1, H2,
connected by an annular series of tubes, J, fixed into them near their circum-
ferences. Steam is admitted by a valved inlet, K, to one end disk, H2, through
a trunnion, L, fixed to it and extending through a stuffing box, L1, to the outside of
the casing; and through a trunnion, L2, fixed to the other end disk, H 1, and extend-
ing through a stuffing box, L3, water of condensation finds egress and is discharged
through a pipe, M. An air relief cock, N, is also provided being fixed on the end
of the gland, L4, of the stuffing box L 3. The connecting tubes, J, are fixed with
a slight inclination or twist so that as each rises water in it may run to the
disk, H1, to which the egress trunnion, L2, is fixed; and in this disk there are
radial partitions, H 4, which carry up water as they rotate and lead it into the
trunnion, L 2.
As the operation proceeds saline or other solid matters would become deposited
on the tubes, J, but they are continuously removed therefrom by scraping rings, P
(Figures, 2, and, 3) which are fitted in several pieces over each tube, J. The
rings, P, on each tube, J, are connected by links, P1, so as to be at suitable
distances apart; and as the heater, H, rotates each set (only one set shown) is
moved to and fro along its tube by acting against helical guides, Q, Q1, fixed to
brackets, Q2, on bars, Q3, and having their lower ends fixed in a bottom
bar, Q4.
For discharging the saline or other solid matters, which may be done whilst the
evaporation or concentration proceeds, the bottom of the vessel, A, is provided
with a valved outlet, R, which may be connected to a discharge vessel.

page_text: Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:-
An improved evaporating and concentrating apparatus, comprising a closed
metal vessel, the lower part of which has rotating in it a heater, heated by steam,
consisting of two hollow end disks connected by an annular series of tubes, scrap-
ing rings acted on by fixed helical guides being provided for cleaning or scraping
the tubes, the parts being constructed arranged and operating substantially as
herein before described with reference to the accompanying drawings.
Dated this Twenty-fourth day of September 1898.
EDMUND HUNT,
Applicants' Agent.