Improvements in Gas Producers.
Year: 1890

page_text: Date of Application, 24th Jan., 1890
Complete Specification Left, 24th Nov., 1890-Accepted, 24th Feb., 1891
PROVISIONAL SPECIFICATION.
[Communicated from abroad by REINHARD MANNESMANN and MAX MANNESMANN,
both of Remscheid, Bliedinghausen, in the Empire of Germany, Engineers.]
Improvements in Gas Producers.
I, OLIVER IMRAY, of No. 28, Southampton Buildings, Chancery Lane, in the
County of London, Fellow of the Institute of Patent Agents, do hereby declare
the nature of this invention to be as follows :--
The products of gas producers, as they are usually worked generally have an
admixture of tarry matters and other hydrocarbons which are apt to be deposited
in the passages, interrupting the flow and at the same time impoverishing the gas.
My invention relates to the construction and working of a gas producer in such a
manner as to convert the hydrocarbon products into permanent gas which mingling
with the produced gases enrich them and flow along with them without causing any
deposit. For this purpose, I extend upwards in the form of a tube the passage for
feeding the producer and close it at the top by a suitable feeding valve.
From
under the valve I conduct a tube down to the lower part of the producer or under
its firegrate when there is such a grate. In the course of this tube 1 introduce an
injector steam jet so as to cause a flow down the tube. The hydrocarbons which
are mostly distilled from the upper part of the coal are thus carried down and
caused to pass up through the incandescent fuel at the lower part of the producer,
becoming thus converted into permanent gas which passes away with the other
gaseous products. By this arrangement also a portion of the other gaseous pro-
ducts is always made to pass through the incandescent fuel, so that there is less
risk of the presence of carbon dioxide in the gas obtained from the producer.
Dated this 24th day of January 1890.
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Gas Producers.
I, OLIVER IMRAY, of No. 28, Southampton Buildings, Chancery Lane, in the
County of London, Fellow of the Institute of Patent Agents, 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 :-
The product of the gas producers such as are generally employed, contain a
mixture of tar and other heavy hydrocarbons which are readily precipitated in the
passages, thereby interfering with the draft and at the same time rendering the gas
impurer.
The present invention relates to the construction and mode of working of gas
producers in such a manner that the heavy hydrocarbons are converted into
permanent or light hydrocarbons which in mixing with the products of the gas
producer enrich the same and pass together with them through the gas passages
without leaving any precipitate. For this purpose, the gas producer, which can
otherwise be constructed in a usual manner, has fixed on the top of it a pipe which
can be closed at top by a suitable valve or other closing mechanism.
From the upper end of this pipe below the closed head a communicating passage
passes to below the ash pit or to the lower part of the generator. In this com-
municating passage is arranged a propelling appliance such as a steam or air injector
or fan, which draws a portion of the gaseous products in the producer through

page_text: the upper tube and then laterally downwards through the communicating channel,
and then blows this current of gas into the lower part of the producer or into the
ash pit. The heavy hydrocarbons are thereby distilled off from the upper part of
the coal and are passed under the incandescent fuel in the lower part of the
generator. By the great heat which exists there, these gases are decomposed and
the liberated solid carbon adheres to the separate pieces of coke, or it combines
with the oxygen, while the permanent gas with the other gaseous products pass into
the gas flue. As, in addition, by this method a portion of the other gaseous pro-
ducts are repeatedly passed through the incandescent fuel, the carbonic acid
contained in these portions is also reduced to carbonic oxide, and also on this
account, the gas produced will, through the increased presence of carbonic oxide be
most suitable for combustion. The movement of the air current can be effected by
mechanical means as for example fans, blowers &c. or preferably by a current of
highly compressed air or a steam jet. In the latter case a portion of the steam thus
introduced into the fuel is converted into water gas which mixes with the other
gaseous products.
Fig. 1 of the accompanying drawings is a vertical section, and
Fig. 2 is a sectional plan of a gas producer modified according to this invention.
The main body of produced gas passes away by the pipe A, but a portion is
drawn from the top of the producer by the pipe B and, by means of an injector C
or other suitable propeller it is caused to descend to the ash pit D whence it passes
again through the incandescent fuel in the producer. The ashpit is also supplied
with air or a mixture of air and steam by the inlet E, the inflow being caused by
an injector or other suitable propeller.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. In gas producers the method of converting fuel into combustible gases by
drawing a portion of the highly heated combustion products through the fresh coal,
and then passing the resulting mixture of combustion products and products of
distillation into the lower incandescent part of the gas producers, in order to
decompose the heavy hydrocarbons and reduce a portion of the carbonic acid
formed, substantially as described.
2. The combination with a gas producer of a channel leading from the upper end
thereof to the lower end, in which channel is a steam or air injector or other
appliance for propelling gases, for effecting the circulation of the combustion gases
through the fresh coal and from there through the lower part of the producer,
substantially as described.
Dated this 24th day of November 1890.
i
ABEL & IMRAY,
Agents for the Applicant.