Improvements in the Purification of Water by Distillation.
Year: 1890

page_text: Date of Application, 20th May, 1890
.
Complete Specification Left, 3rd Oct., 1890-Accepted. 8th Nov. 1890 :
PROVISIONAL SPECIFICATION.
Improvements in the Purification of Water by Distillation.
I WILLIAM CHARLES YOUNG of No. 22 Windsor Road Forest Gate in the County
of Essex Analytical and Consulting Chemist do hereby declare the nature of this.
invention to be as follows:-.
I have ascertained that the organic matter contained in ordinary water is in part
volatile and that such volatile organic matter passes over in the ordinary process of
distillation and is consequently present in the resulting distilled water.
The object of my invention is the production of distilled water free from volatile
organic matter and my said invention consists of the method hereinafter described for
preventing volatile organic matter from passing over in the process of distillation.
According to my said invention I add to the water to be distilled an excess of lime
or other matter possessing alkaline properties. I then proceed with the distillation of
the water in the ordinary way but I reject the water resulting from the condensation
of the vapour which comes over during the early part of the process and I stop the
process before the whole of the water in the still is vaporized.
Dated this 90th J... SM1000
W. T. WHITEMAN,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Purification of Water by Distillation.
I WILLIAM CHARLES YOUNG of No. 22 Windsor Road, Forest Gate in the County
of Essex, Analytical and Consulting Chemist 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 :-
I have ascertained that the organic matter contained in ordinary water is in part
volatile and that such volatile organic matter passes over in the ordinary process of
distillation and is consequently present in the resulting distilled water.
The object of my invention is to prevent volatile organic matter contained in
ordinary water from passing over in the process of distillation.
According to my said invention I add to the water to be distilled an excess of
slaked lime or other non-volatile inorganic matter possessing alkaline properties and
separate the undissolved or insoluble portion or portions thereof and the matter (if any)
precipitated from the water by filtration or by allowing the said portion or portions to
subside and then removing the supernatant water. I then proceed to distil the said
water in the ordinary way.
1
It is immaterial what quantity or proportion of slaked lime or other matter having
alkaline properties be added to the water to be distilled provided an excess be added.
Where slaked lime is selected for use about one pound by weight thereof to every
ten gallons of the water to be distilled is sufficient.
If the distilled water be required to be free from ammonia I reject the water
resulting from the condensation of the vapour which comes over during the early part
of the process. Ordinarily the vapour which comes over after about five per cent. of
the water in the still has been vaporized is free from ammonia, but the presence of
ammonia in the distilled water or the freedom of the said water from ammonia may
be ascertained by means of ordinary and well known tests.
As usual in the distillation of water I stop the process before the whole of the
water in the still has been vaporized. Ordinarily the process may be allowed to proceed
[Pins1

page_text: until about nine tenths of the quantity of water originally placed in the still has been
vaporized.
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 method hereinbefore described for preventing volatile organic matter contained
in water from passing over while it is being distilled.
Dated the 2nd day of October 1890
W. T. WHITEMAN,
Agent for the Applicant.