The Prevention of the Choking of Pipes from Retort to Hydraulic Main in Gas Works by Means of Baffle Plates Placed in Mouth Piece of Retort. STOPP FROM RETORTS IN THE MANUFACTURE OF GAS OR TAR and
Year: 1888

page_text: Date of Application, 26th Oct., 1888
Specification Accepted, 7th Dec., 1888
The Prevention of the Choking of Pipes from Retort to Hydraulic
Main in Gas Works by Means of Baffle Plates Placed in Mouth
Piece of Retort.
DAVID PALMER MUDIE, Superintendent Gas Works Swan Village West Bromwich
do hereby declare the nature of my invention for THE PREVENTING OF THE CHOKING
OR STOPPAGE OF PIPES FROM RETORTS IN THE MANUFACTURE OF GAS OR TAR and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
This Invention is an arrangement to prevent the choking of Pipes from Retort
to Hydraulic Main in Gas Works by the placing in the Mouth Piece of the Retort
after the Retort is charged with Coal and before the Retort lid is closed, clear
of the outlet- of the Retort Mouth Piece a moveable Iron or steel Baffle Plate or
Plates single, double or Triple, made of sheet Iron or sheet steel. The Gas from
the charge of Coal in the Retort is made to pass under or under and over the
Plate or Plates placed in Mouth Piece. The Plate or Plates preventing the excessive
hot gases from the charge of Coal in retort going direct up the ascension pipe to
Hydraulic Main. When the Baffle Plate or Plates is put in position by the
Workman in Retort Mouth, after he has charged the Retort with Coal and put on
and screwed up Retort lid to Mouth. Piece if forms a chamber for the Gas between
the Baffle plate or plates and the closed Mouth picce lid for the Cooling of the
excessive hot gases before they ascend the pipes from the Retort to the Hydraulic
Main, which effectually prevents the choking of the Pipes from the Retort to
the Hydraulic Main."
These Baffle Plate or Plates will require to be made according to the size and
form of the Retort Mouth Piece in which they are to be used, The Plate or Plates
having the necessary size passage made for the free flow of Gas to pass under or
under and over the Baffle Plate or Plates from the body of the Retort to the
ascension pipe as shown on the accompanying drawings.

page_text: Shows a section of Mouth Piece of Retort and ascension Pipe containing a Triple
baffle Plate placed in the Mouth Piece of Retort. It also shows the plan of a
triple baffle Plate.
EXPLANATION.
The Gas from the Retort A passes under the Baffle Plate B. B. through the
space a between the bottom of baffle plate B B and the floor of the mouth piece,
the gas then passes over the baffle plate C. C. the gas then passes under baffle
plate D. D. 1. through space a. a into chamber E. and then up the ascension
pipe F.
The Baffle Plates B. B.-C. C.-D. D. D. are attached to framework H. This
frame work H projects distance a. beyond the bottom of baffle plate D D. D. so as
to keep a passage open between the plate D. D. D and the lid of the Retort Mouth
piece.
FIGURE 3
Shows section of Retort Mouth Piece & ascension Pipe containing a Baffle
plate D. D. D. The plan of the Baffle Plate is also shown.
The gas coming from the Retort passes through the passage a a between the
bottom of the baffle Plate D. D. D. and the floor of the Retort Mouth Piece to the
chamber E and thence up ascension pipe F.
The Baffle Plate D. D. D is fixed on a framework H. This framework projects
distance a beyond the bottom of the Baffle Plate D. D. D in order always to keep an
aperture open for the passage of the Gas along a to E.
FIGURE 4
Shows section of Retort Mouth Piece and ascension Pipe containing single baffle
plate D. D. It also shows plan of Baffle Plate. The Gas from Retort A passes
through space a under baffle plate D D to the Chamber E and thence up ascension
pipe F. Baffle plate D. D. is fixed to a frame work H. the foot of which projects
distance d. d. in order to keep Baffle plate D D beyond ascension pipe F.
In all three different forms of Baffle Plates a small projection K is affixed to the
front of each baffle plate. In the case of Figure 2 it is only affixed to D. D. D.
This is placed so that the plate may be taken up and put into or taken out of
the Retort Mouth Piece by the Workman with a shovel or other suitable Tool.
The form of Baffle Plate may be altered in form to suit Mouth Pieces of any
shape.
Having now particularly described and ascertained the nature of my said Inven-
tion and in what manner the same is to be performed I declare that what 1
claim is
1. The prevention of the excessive hot gases from passing direct from the Retort
to the ascension pipe, which is prevented by the use of the baffle plates as before
described, which are placed at the back part of the Retort Mouth piece nearest to
the Retort, which forms the Mouth Piece into a cooling chamber for the gases
which effectually prevents the choking of the pipes from the Retort to the Hydraulic
Main.

page_text: 2. The saving of Gas, by the pipes from the Retort to the Hydraulic Main being
kept open..
3. The saving of Tar and Ammoniacal Liquor.
4. The saving of Labour by keeping the pipes from the Retort to the Hydraulic
Main clear and consequently no labour required for unstopping of the pipes..
5. The Triple Baffle Plate Figure 2 by being placed in Mouth pieces of Retorts
which are of exceeding high Temperatures will reduce the heat of the Gas from
these retorts to a proper working Temperature and prevent the choking of the Pipes
from the Retorts to the Hydraulic Main.
6. Baffle Plates Figures 3 and 4 are for placing in Retort Mouth Pieces of
Retorts working with ordinary Temperatures.
Date L 1
1000
DAV. P. MUDIE.