Improvements in Apparatus for Taking off the Gas from Gas Retorts and Delivering it into Hydraulic Mains, and for Preventing the Tar or Liquors which Condense in the Ascension Pipes Returning to the Retorts.
Year: 1888

page_text: Date of Application, 16th Oct., 1888
Complete Specification Left, 9th Apr., 1889
Complete Specification Accepted, 18th May, 1889
Improvements in Apparatus for Taking off the Gas from Gas Retorts
and Delivering it into Hydraulic Mains, and for Preventing the
Tar or Liquors which Condense in the Ascension Pipes Returning
to the Retorts.
1, JOHN KING the Younger, of Chepstow Street, Manchester, in the County of
Lancaster, Manufacturer, do hereby declare the nature of this invention to be as
follows:
In the present arrangement for carrying off the gas from retorts, each retort has
an ascension tube or pipe which carries the gas up to a point above the hydraulic
main and then bends down into the latter. During the rise of 15 or 20 feet, tar
and other liquors are to some extent condensed in the ascension pipes and run
down into the mouth of the retort where they are for the most part re-evaporated
or destroyed. When the retort is opened and discharged the red hot coke passes
over and comes into contact with what remains of the tar so run down creating a
dense cloud of black smoke which is to say the least very objectionable.
My invention refers to the trapping or collecting of the tar or ammoniacal or other
liquors condensed in the ascension pipes and preventing such returning to the retorts.
It consists essentially in constructing the ascension pipes with a catch box or trap
on each, placed as near as practicable to the retort, (or on one ascension pipe into
which the other neighbouring retorts may be discharged by means of a short bend pipe
or other connection). The condensed liquors as they fall or run down, collect in the
trap and are drawn off therefrom, by pipes protected by syphon or otherwise to
From this cistern
prevent the passage of air or the escape of gas, into a small cistern.
the liquors can be periodically drawn by valves or pipes descending therefrom and
so secured for sale.
Dated this 15th day of October 1888.
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester,
Patent Agents.

page_text: Improvements in Apparatus for Taking off the Gas from Gas Retorts
and Delivering it into Hydraulic Mains, and for Preventing the
Tar or Liquors which Condense in the Ascension Pipes Returning
to the Retorts.
1, JOHN KING the Younger, of Chepstow Street, Manchester, in the County of
Lancaster, Manufacturer, 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:-
In the present arrangement of apparatus for carrying off the gas from retorts,
cach retort is fitted with an ascension tube or pipe which carries the gas up to a point
above the hydraulic main and then bends down into the latter.
During the rise
of 15 or 20 feet, tar and other liquors are to some extent condensed in the ascension
pipes and run down into the mouth of the retort, where they are for the most part
re-vapourised or destroyed. When the retort is opened and discharged the red hot
coke passes over and comes into contact with the condensed residue that remains of
the tar so run down, creating a dense cloud of black smoke, which is to say the
least very objectionable.
My invention refers to the trapping or collecting of the tar or ammoniacal
or other liquors condensed in the ascension pipes which are valuable as bye products
and preventing such returning to the retorts.
It consists essentially in constructing the ascension pipes with a catch box or trap
on, or connected with, each, which will receive and collect any tar or other liquors
which may condense in and run down the sides of the ascension pipe.
The invention will be fully described in reference to the annexed drawings.
Fig. 1, is a front elevation part in section of gas furnace and retort, with ascension
or outlet pipes, made in accordance with my invention.
Fig. 2, side elevation of ascension pipes shown to right hand of Fig. 1.
Fig. 3, side elevation of ascension pipes to left hand of Fig. 1.
Fig. 4, sectional plan of ascension pipes on line x-y Fig. 1.
The furnace A, and retorts B, may be of any well known or ordinary construction,
with the ascension pipes leading from the mouth pieces C, of the retorts to the
hydraulic main D, in the usual way. Each ascension pipe E is constructed with a trap or
catch box F, placed as near as practical to the mouth-piece of its retort. The trap I
prefer to make as shown in the drawing with a well or receptacle fat one side of the
pipe, the upper walls of the pipe being bent or curved so as to project over the well f
The lower part e of the ascension pipe connects with the upper part at such an angle
that any liquor condensing upon and running down the upper walls will run into the
well f..
The three ascension pipes shown to the right of fig. 1, and in figs. 2 and 4, have.
the traps F, placed with their wells at the side of the pipes, and the three

page_text: in
pipes to the left of Fig. 1 and Fig. 3 bave the traps F placed with their wells
front, either arrangement may be adopted to suit the furnace to which they are
applied, or they may be placed behind the pipes or in other suitable position. "G, is
a door, through which if needful the pipes may he cleaned.
It is also evident that the trap may be formed in any other convenient manner such
as by forming the pipe in two lengths and joining the lower length to the side of the
upper one as in Fig. 5, leaving a well at the base of the upper pipe. Or a trap may
be formed on one ascension pipe into which all the retorts may be discharged by
means of a short bend pipe or other connection. 1 consider, however, that the
construction which is first described will be found most serviceable. The wells fof
the several traps are preferably connected together by a pipe H, to which is connected
a draw off pipe I. The draw off pipe is fitted with a syphon or valve to prevent
the passage of air into or the escape of gas from the ascension pipes E.
The liquors that condense in the ascension pipes E, will fall or run down the sides
of the pipe, and drop into or collect in the well from which they are drawn off
by the pipe I, into any suitable tank or receptacle placed for the purpose.
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. The combination with apparatus for withdrawing gas from the retorts and
delivering it into the hydraulic mains, of a catch box or trap to receive and collect
tar or other condensed liquors, and prevent same returning to the retorts substantially
as described..
2. In apparatus for withdrawing gas from retorts an ascension pipe having a
catch box or trap to receive tar or other liquors condensed therein, substantially as
described.
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester,
Patent Agents.