*Improvements in Apparatus for the Condensation of Nitric Acid.
Year: 1891

page_text: Date of Application, 22nd June, 1891
Complete Specification Left, 14th Dec., 1891-Accepted, 16th Jan., 1892
PROVISIONAL SPECIFICATION.
*Improvements in Apparatus for the Condensation of Nitric Acid.
A. communication to me from OSCAR GUTTMANN and LUDWIG ROHRMANN, of
Krauschwitz, near Muskau, in the Empire of Germany, Manufacturers.
1, EDMUND EDWARDS, of the firm of Edwards and Co., Patent Agents and
Engineers, of 35, Southampton Buildings, Chancery Lane, in the County of
Middlesex, do hereby declare the nature of this invention to be as follows:-
In order to advantageously condense nitric acid in the process of manufacture it
is necessary that the nitric acid as formed, should be brought out of contact with
the impurities contained in the gases, as quickly as possible.
This object is attained fully and completely by guiding the gases through a pipe
system, consisting of an inclined lower main pipe which may be made of one or
more pieces, and of vertical gas conduits, connected with the main pipe, which is
divided into several chambers by diaphragms cach chamber being connected with
two of the pipes while on the lower side of the main pipe each two neighbouring
chambers are connected by an angled or curved pipe. The upper ends of the two
neighbouring pipes which are connected to two different chambers, are connected
by a curved pipe except the inlet and outlet pipes at the ends of the system.
It is evident that the gases from one chamber to the other have to pass through
the vertical pipes, and the condensation liquid is collected in the chambers. The
condensed nitric acid flows from the first chamber to the second, from this to the
third, and so on, through the lower angled or curved pipes which it fills, so as to
prevent the gases from also passing through them.
The condensation of the gases takes place in the vertical pipes which may be of
sufficient length, or in condensation vessels, of any suitable shape which are
arranged between the lower main pipe and the lower ends of the vertical pipes.
The lower angled or curved pipes are provided with cocks.
The pipes are made of a material not affected by acids, such as stone, clay, or
glass.
The main pipe is provided with short vertical tubes and sockets in which fit the
lower ends of the vertical condensation pipes or of the condensation vessels with
which the latter are connected. The sockets are all arranged in one horizontal
line so that the vertical pipes being of equal length can be connected at their upper
ends by elbows having arms of equal length which is essential for the proper
manufacture of the pipes.
Dated his bond 1
J
1.... 1001
EDWARDS & Co.,
35, Southampton Buildings, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Apparatus for the Condensation of Nitric Acid.
A communication to me from OSCAR GUTTMANN and LUDWIG ROHRMANN, of
Krauschwitz, near Muskau, in the Empire of Germany, Manufacturers.
I, EDMUND EDWARDS, of the firm of Edwards and Co., Patent Agents and
Engineers, of 35, Southampton Buildings, Chancery Lane, 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 and accompanying drawing, that is to say :-
In order to advantageously condense nitric acid in the process of manufacture it

page_text: is necessary that the nitric acid as formed, should be brought out of contact with
the impurities contained in the gases as quickly as possible.
This object is attained fully and completely by guiding the gases through a pipe
system of the kind illustrated in the accompanying drawing which represents an
elevation of the improved apparatus partly in section.
It consists of an inclined lower main pipe a which may be made of one or more
pieces, and of vertical gas-conduits b, connected with the main pipe a, which is
divided into several chambers by the diaphragms c, each chamber being connected
with two of the pipes b whilst on the lower side of the main pipe a each two
neighbouring chambers are connected by an angled or curved pipe d.
The upper ends of the two neighbouring pipes which are connected to two
different chambers, are connected by a curved pipe e, except the inlet and outlet
pipes at the ends of the system.
It is evident that the gases from one chamber to the other have to pass
through the vertical pipes b, and the condensation liquid is collected in the
chambers. The condensed nitric acid flows from the 1st chamber to the 2nd, from
this to the 3rd, and so on, through the lower angled or curved pipes d, which it
fills, so as to prevent the gases from also passing through them.
The condensation of the gases takes place in the vertical pipes b, which may be
of sufficient length, or in condensation vessels of any suitable shape, which are
arranged between the lower main pipe a and the lower ends of the vertical pipes b.
The lower angled or curved pipes d are provided with cocks g. The pipes are
made of a material not affected by acids such as stone, clay, or glass.
The main pipe a is provided with short vertical tubes and sockets in which fit
the lower ends of the condensation pipes, or of the condensation vessels with
which the latter are connected. The sockets are all arranged in one horizontal
line i, i, so that the vertical pipes b being of equal length can be connected at their
upper ends by elbows or bends e having arms of equal length which is essential for
the proper manufacture of the pipes.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
:-
1. In apparatus for the condensation of nitric acid, consisting of a number of
upright conduits, whose lower ends with the intervention of the condensation
vessels, are respectively connected with the inclined pipe a, the formation of
chambers in the pipe a by the diaphragms c, to which are connected the adjoining
pipes b, every two adjacent chambers being connected below by the elbow pipes d so
that the gases pass through the pipes from chamber to chamber, and the condensed
liquid through the elbows to the outlet substantially as described and illustrated.
2. In connection with the main pipe a described in Claim 1, the arrangement of
the tubes with sockets of different length in which fit the condensation pipes b
and vessels so that while the main pipe is inclined the sockets are in a horizontal
line, and so that the pipes are of the same length and can be connected through
symmetrical pipe bends e, all substantially as set forth and illustrated.
Dated this 14th day of December 1891
EDWARDS & Co.,
35, Southampton Buildings, London, Agents for the Applicant.