Carbon and Alkaline Chlorides and Silicates.
Year: 1885

page_text: Carbon and Alkaline Chlorides and Silicates.
We, LEON ELIE LOUIS JEAN BAPTISTE RÉGI medical doctor, 62 rue de Bayonne,
in Toulouse, France and LOUIS MARIE CHARLES FOLIE-DESJARDINS, general
manager of the platrières de l'Ariége, 41 allée St Etienne, in Toulouse, France,
do hereby declare the nature of our invention and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement :-
The object of our invention is specially the decomposition of alkaline sulpbates
in general, whether natural or manufactured, obtained directly either, firstly by the
action of hydrochloric acid or, secondly by the action of silicic acid in any of its
forms; hitherto the decomposition of alkaline sulphates in general, either natural
or manufactured such as gypsum, anhydrite, sulphate of lime, of potassium, of soda
etc, residues of gas works and many chemical and other works has not been
realised directly industrially or chemically for the manufacture of sulphuret of
carbon and for collecting residual products of commercial utility; by our process,
we decompose directly all the alkaline sulphates, whether natural or manufactured
by the simultaneous action of heat and of an acid either hydrochloric or silicic in
their various forms either natural or manufactured by the formation of sulphurous
vapors or gas which are passed through ignited carbon and which combined with
the latter form sulphuret of carbon.
The residues of the alkaline sulphates subjected to hydrochloric acid are mainly
alkaline chlorides and those subjected to silicic acid, alkaline silicates.
In order that our invention be clearly understood and readily put into practice,
we describe it in detail conjointly with the four figures of the accompanying
drawing representing our system of apparatus, and of which
Fig. 1 is a longitudinal elevation of the same in section through A A fig. 4.
Fig. 2 a plan in section through B B fig. 4.
Fig. 3 a longitudinal elevation in section through C C fig. 4 and

page_text: This system of apparatus is composed of a battery of two horizontal retorts 1
and 2 which may be in cast iron or other appropriate material, each of which is
provided with an independant fire, whilst both are set in the same masonry, the
one 1 is inclined downwards from its rear end, of a refrigerator 3 of a reception
tank 4 these constituent parts are connected by piping and provided with various
working details in the manner and for the purposes hereafter described.
DESCRIPTION OF THE PROCESS CARRIED OUT WITH HYDROCHLORIC ACID.
The alkaline sulphates under one or any of their forms above-mentioned are
charged in the retort 1 through the man hole-5 and the carbon, consisting in either
coke or charcoal, in the retort 2 through the man hole 6, these openings 5 & 6 are
then closed and the said products are heated to a red heat by means of fires lighted
under the retorts, then the hydrochloric acid, preferably in the shape of vapor, is
fed by the pipe 7 into the retort 1, a cock 8 is adapted to the said pipe for the
purpose of regulating the supply of acid which latter produces immediately an
alkaline chloride which remains in the retort and sulphurous gas which passes
through the pipe 9 into the retort 2 where by its contact with the incandescent
carbon therein contained, it combines therewith forming sulphuret of carbon which
passes in the shape of gas through the pipe 10 into the refrigerator 3 where it is
condensed into a liquid which is sulphuret of carbon, from this refrigerator, the
liquid flows through the pipe 11 into the reception tank 4. The relative pro-
portion of the ingredients above mentioned will naturally vary according to their
nature and many other circumstances, it is therefore impossible to fix them exactly
but under ordinary circumstances we have found that in practice 516 kilos of
alkaline sulphate, 219 kilos of hydrochloric acid and 350 kilos of coke yield
100 kilos of sulphuret of carbon.
The retorts 1 and 2 have each an opening 12 for discharging their residues
which are of course kept closed while the process is being carried on, these residues,
are for the retort 1, an alkaline chloride which finds a ready market and for the
retort 2 a relatively small quantity of ashes. The retort 1 is set in a slanting
position for the purpose of facilitating the removal of its said residues and con-
nected therewith we adapt a spout 13 for discharging them in a waggon or other
appropriate receptor; 14 is a pipe fitted on the receiver 3 it serves to carry off the
ancondensed gasses.
DESCRIPTION OF THE PROCESS CARRIED OUT WITH SILICIC ACID.
The alkaline sulphates together with the silicic acid are charged in the retort 1
and the carbon (coke or charcoal) in the retort 2 and after having closed the man
holes 5 & 6, these products are heated to a red heat in the two retorts, which
produces in the retort 1 an alkaline silicate remaining therein and sulfurous gasses
which pass by off by the pipe 9 into the retort 2, where by their contact with the
incandescent carbon they combine therewith forming gaseous sulphuret of carbon
which passes off by the pipe 10 into the refrigerator 3 where it is liquified or
condensed and from which it flows into the reception vat 4 through the pipe 11.
When the charge has been worked off. the doors 12 are opened and after allowing

page_text: Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is
First. The process above described for manufacturing sulphuret of carbon and
alkaline chlorides and silicates from alkaline sulphates and hydrochloric acid or
silicic acid as above described.
Second. The apparatus above described and illustrated in the 4 figures of the
accompanying drawing employed by us for the said manufactury.
L. E. L. J. B. RÉGI, and
L. M. C. FOLIE-DESJARDINS.
Per Brandon & Sons,
Agents.