Improvements relating to the Manufacture or Production of certain Phosphorus Compounds.
Year: 1891

page_text: Date of Application, 7th Feb., 1891
Complete Specification Left, 7th Nov., 1891-Accepted, 6th Feb., 1892
PROVISIONAL SPECIFICATION.
Improvements relating to the Manufacture or Production of certain
Phosphorus Compounds.
1, PAUL GEORGE WILLIAM TYPKE, of Fairlawn, New Malden, Surrey,
Chemical Manufacturer, do hereby declare the nature of this invention to be as
follows:-
Hitherto the phosphoretted hydrogen gas given off in the manufacture of the
salts of hypophosphorous acid (known as the hypophosphites) obtained by the
action of phosphorus and water upon the alkalies, alkaline earths, or sulphides
of the alkaline earths; or, by the action of water upon the phosphides of the
alkalies or alkaline earths has been either allowed to escape unutilized; or, other-
wise, has been simply converted into the comparatively invaluable chemical,
phosphoric acid.
Now, in accordance with my invention, I deal with or treat the phosphoretted
hydrogen as follows, with a view to convert same again into phosphorus. The gases
and steam resulting from the process of manufacture usually followed are first
cooled, so as to deprive them of the greater portion of the water vapour, by
passing same through a series of pipes exposed to the cooling action of the atmo-
sphere, or of cold water, or otherwise as may be desired or found most convenient in
practice. When sufficiently cooled, said gases are conducted through a tube or
tubes or series of retorts (which may be of iron, fire clay, or other suitable
material) heated in a furnace, said tube, tubes, or retorts being filled with pieces of
pumice stone, coke, porcelain, fire-clay or any other suitable material which will
withstand a high temperature and not combine with phosphoretted hydrogen or its
decomposition products.
By this treatment the phosphoretted hydrogen is completely dissociated, that is,
resolved into its component elements phosphorus and hydrogen. The phosphorus
vapours coming from the tubes or retorts are condensed in suitable receivers in
the manner usually followed in the manufacture of phosphorus; whereas the
hydrogen gas, which is of little value, is allowed to escape. The phosphorus thus
obtained can again enter into the manufacture of hypophosphites.
Dalhin th of a 1001
JAMES
STEVENSON,
20, High Holborn, London, W.C., Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements relating to the Manufacture or Production of certain
Phosphorus Compounds.
I PAUL GEORGE WILLIAM TYPKE of Fairlawn, New Malden, Surrey,
Chemical 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:—
Hitherto the phosphoretted hydrogen gas given off in the manufacture of the
salts of hypophosphorous acid (known as the hypophosphites) obtained by the
action of phosphorus and water upon the alkalies, alkaline earths, or sulphides of
the alkaline earths; or, by the action of water upon the phosphides of the alkalies
or alkaline earths has been either allowed to escape unutilized; or, otherwise, has
been simply converted into the comparatively invaluable chemical, phosphoric acid.
Now, in accordance with my invention I deal with or treat the phosphoretted

page_text: hydrogen as follows with a view to convert same again into phosphorus. The gases
and steam resulting from the process of manufacture usually followed are first
cooled, so as to deprive them of the greater portion of the water vapour, by
passing same through a series of pipes exposed to the cooling action of the atmo-
sphere, or of cold water or otherwise as may be desired or found most convenient in
practice. When sufficiently cooled said gases are conducted through a tube or
tubes or series of retorts (which may be of iron, fireclay, or other suitable
material) heated in a furnace, said tube, tubes, or retorts being filled with pieces of
pumice stone, coke, porcelain, fire clay or any other suitable material which will with-
stand a high temperature and not combine with phosphoretted hydrogen or its
decomposition products.
By this treatment the phosphoretted hydrogen is completely dissociated, that is
resolved into its component elements phosphorus and hydrogen. The phosphorus
vapours coming from the tubes or retorts are condensed in suitable receivers in the
manner usually followed in the manufacture of phosphorus; whereas the hydrogen
gas, which is of little value is allowed to escape. The phosphorus thus obtained
can again enter into the manufacture of hypophosphites.
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 I claim is :
The manufacture of phosphorous from phosphoretted hydrogen gas by the process
em deserTOCⱭ.
Dated this 7th day of November 1901
JAMES STEVENSON,
Gray's Inn Chambers, 20, High Holborn, W.C., Agent for Applicant.
JAMES
STEVENSON,
Gray's Inn Chambers, 20, High Holborn, W.C., Agent for Applicant.