Improvements relating to the Treatment of Concentrated or Viscid Solutions for Obtaining Solid Particles therefrom in the Form of Powder.
Year: 1899

page_text: Date of Application, 21st Mar., 1899
Complete Specification Left, 9th Nov., 1899-Accepted, 13th Jan., 1900
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PROVISIONAL SPECIFICATION.
Improvements relating to the Treatment of Concentrated or Viscid
Solutions for Obtaining Solid Particles therefrom in the Form of
Powder.
I, JOSEF KUNSTNER, of Dorfstrasse 59, Obersedlitz, near Aussig on the Elbe,
in the Empire of Austria, Manufacturer, do hereby declare the nature of this
invention to be as follows;-
Heretofore when it has been required to convert water solutions, or thick
flowing viscid substances, containing water, into a pulverized state it has been
usual to thoroughly dry and then grind them.
This method has the defect of being both long and costly, because the dis-
integration of the solid masses is effected by machinery.
It is the object of this invention to convert watery solutions, or, thick flowing
masses containing water, directly into a state of powder, by evaporating a portion
of the water therefrom and simultaneously atomizing the materials in solution.
In carrying out the process the solution of thick viscid mass is beated under
pressure. The degree of heat depends on the nature of the substances and also
on the amount of water which it is desired to return in the pulverized substance.
After the requisite temperature and the pressure have been, attained the heated
mass is advantageously caused to pass through a pipe provided with a regulating
valve and to suddenly enter a large empty space. This effects a sudden reduction
of the previously existing high pressure. As a consequence of this sudden
reduction in pressure the mass issuing from the pipe becomes atomized. Foaming
liquids such as for example as soap, form into milliards of bubbles. A large
amount of the water is thereby, evaporated and the mass thus deprived more or
less, of its water becomes dry and settles as dust on the floor. Directly the mass
leaves the heating chamber it becomes atomized whereby the evaporation of the
water is aided and the formation of powder facilitated. By a correct choice of
the pressure and temperature as well as of the size of the room or space for
atomizing it is possible to regulate the action to a nicety. The process is especially
suited for the production of soap powders which hitherto could only be
obtained by either a large addition of soda thereto or by completely drying them.
The dry process is unhealthy for the workmen on account of the dust formed
during the operation and in packing.
By my improved process a powder may be obtained which contains a little
water and therefore does not give rise to dust.
Dat this 21st day of March 1800

page_text: Improvements relating to the Treatment of Concentrated or Viscid
Solutions for Obtaining Solid Particles therefrom in the Form of
Powder.
I, JOSEF KUNSTNER, of Dorfstrasse 59, Obersedlitz, near Aussig on the Elbe,
in the Empire of Austria, 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:-
Heretofore when it has been required to convert watery solutions, or thick
flowing viscid substances containing water, into a pulverized state it has been
usual to thoroughly dry, and then grind them.
This method has the defect of being both long and costly, because the dis-
integration of the solid masses is effected by machinery.
It is the object of this invention to convert watery solutions, or thick flowing
masses containing water, directly into a state of powder, by evaporating a portion
of the water therefrom and simultaneously atomizing the materials in solution.
In carrying out the process, the solution or thick viscid mass is heated under
pressure, and then the pressure is suddenly reduced by causing the mass to enter
à large empty space in order to atomize it.
The degree of heat depends on the nature of the substances, and also on the
amount of water which it is desired to retain in the pulverized substance.
After the requisite temperature and pressure have been attained in the vessel
in which the operation is carried out, the heated mass is caused suddenly to enter
a large empty space, advantageously by passing it through a pipe provided with a
regulating valve. This effects a sudden reduction of the previously existing high
pressure, and as a consequence, the mass issuing from the pipe of the vessel
becomes atomized. Foaming liquids such as for example, soap, form into
milliards of bubbles. Thereby a large amount of the water is evaporated, and the
mass, thus deprived more or less of its water, becomes dried and settles as dust
on the floor. The mass directly leaving the heating chamber, is brought into
a very finely divided state by the sudden reduction of the pressure, whereby the
evaporation of the water is aided, and the formation of powder facilitated.
For the manufacture of soap powder for instance, it is necessary to heat the
mass to a temperature 150° C., but naturally this temperature depends on the
quantity of water which is to be retained in the soap powder.
By correctly adjusting the pressure and temperature, as well as of the size of
the room or space for atomizing, it is possible to regulate this action to a nicety.
The process is especially suited for the production of soap powders, which
hitherto could only be obtained by a large addition of soda in a fully dry state,
and it was not possible to make soap which contained only little soda.
The dry process however is unhealthy for the workmen on account of the dust
formed during the operation, and in packing.
By my improved process a powder may be obtained which contains such a
quantity of water that it does not give rise to dust.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
1 claim is
A process relating to the treatment of concentrated or viscid solutions for
obtaining solid particles therefrom, consisting in heating the mass in a closed
vessel under pressure at a high temperature, and then causing it to enter a large

page_text: empty space in order to bring it into a finely divided state by the sudden reducing
of the pressure, without making use of an atomizer in such a manner that the
water may easily evaporate, substantially as described.
Dated this 9th day of November 1899.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.