A Process First for Producing a Clean Gaseous Fuel to be used in the Evaporation of Brine, and Secondly for Recovering the Ammonia Formed During the Production of said Gaseous Fuel.
Year: 1889

page_text: Date of Application, 30th May, 1889
Complete Specification Left, 28th Mar., 1890-Accepted, 17th May, 1890
PROVISIONAL SPECIFICATION.
A Process First for Producing a Clean Gaseous Fuel to be used in
the Evaporation of Brine, and Secondly for Recovering the
Ammonia Formed During the Production of said Gaseous Fuel.
I, SAMUEL WRIGHT WILKINSON Ph. D. of 51 Arcade Chambers, Manchester, in
the County of Lancaster, do hereby declare the nature of this invention to be as
follows:-
My invention relates to a process of generating gas from coal and has two principal
objects first, to produce economically a clean gaseous fuel suitable for the purpose
of evaporating brine by passing the burning gases over the surface of the brine pan
substantially in the manner described in the Specification to my Application for
Letters Patent No. 7374 of 1889 and secondly in combination with the foregoing to
separate out and recover the ammonia formed during the production of the gaseous
fuel.
"
In carrying out my invention I propose to burn the coal with a limited supply of
air and steam and to recover the ammonia contained in the resulting gases by means
of a "scrubber or equivalent means. From the scrubber the gases are conducted
through chequer brickwork or any other convenient arrangement for mixing a
sufficient quantity of air with the gases to ensure a clean flame when the gaseous
fuel is ignited, the air for this purpose being admitted either before or after the gas
leaves the scrubber or equivalent.
From the chequer brickwork the gaseous mixture is conducted and passed in a
burning state over the surface of one brine pan the cover for which may be partially
or wholly formed by the bottom of another pan so that the flame serves not only to
heat the surface of the brine in the lower pan but also to heat the bottom of the
upper pan and the waste gases may be further utilised by passing them through flues
under the same or another pan or pans.
T
000
1000
H. B. BARLOW,
A cont
COMPLETE SPECIFICATION.
A Process First for Producing a Clean Gaseous Fuel to be used in
the Evaporation of Brine, and Secondly for Recovering the
Ammonia Formed During the Production of said Gaseous Fuel.
I, SAMUEL WRIGHT WILKINSON, Ph. D. of 51 Arcade Chambers, Manchester, in
the County of Lancaster, 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 :-
My invention relates to a process of generating gas from coal and has two
principal objects first to produce economically a clean gaseous fuel suitable for the
purpose of evaporating brine by passing the burning gases over the surface of the
brine pan and secondly in combination with the foregoing to separate out and recover
the ammonia formed during the production of the gaseous fuel.
In carrying out my invention I propose to burn the coal in a closed furnace or
producer into which I admit air and steam in such regulated proportions that the
resulting gases shall contain the largest amount of ammonia practicable. The gases
generated by the combustion or partial destructive distillation of the coal are con-
ducted through pipes into a scrubber which is preferably a closed tank partially
filled with vitriol the pipes discharging the gases into the vitriol through

page_text: which they rise to the upper part of the tank. The free ammonia
in the gases is retained by the vitriol and deposited in the tank in the form
of sulphate of ammonia. From the tank or scrubber the gases are then conducted
through another series of pipes to the lower portion of a chamber filled preferably
with chequer brickwork. I admit also to the lower portion of this chamber air
which becomes thoroughly mixed with the gases the proportion of air to gas being
such that on the gaseous mixture being ignited complete combustion ensues.
burning gases are then forced or conducted to the pans to evaporate the brine and
the combustion being complete there will be no deposit of free carbon on the arch
or on the brine in the pans arising from the passage of the gases to the chimney.
The
The accompanying drawing is a sectional elevation of a convenient arrangement of
pans for evaporating brine by means of gaseous fuel.
In this view-a, b, c, designate respectively three brine pans and d is a chamber to
which the gaseous mixture is conducted from the arrangement of chequer brick-
work above mentioned. From the chamber d the gases are passed in a burning
state through the flame chamber e over the bottom brine pan b. the cover for which
forms the bottom of the upper brine pan a so that the flame serves not only to heat
the surface of the brine in the lower pan 6 but also to heat the bottom of the upper
pan a and the waste gases may be further utilized by passing them through flues f
under the same pan b or another pan c. It will thus be evident that the flame and
heat deflected by the cover of the pan 6 pass over the brine therein by which means
the brine is rapidly heated and evaporated, while at the same time the burning gases
assist in raising the temperature of the brine in the pans a and c.
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 I
claim is :-
The herein described process for producing a clean gaseous fuel to be used in the
evaporation of brine and for recovering the ammonia formed during the production
of such gaseous fuel the essential features of said process consisting in burning coal
with a limited supply of air and steam, and in recovering the ammonia contained in
the resulting gases by means of a scrubber substantially as specified.
Dated this 27th day of March 1890
H. B. BARLOW,
17, St. Ann's Square, Manchester, Agent for Applicant.