US1573284A - Composition for absorbing and purifying the waste products of combustion - Google Patents

Description

Patented Feb. 16, 1926.

JOHN C. TATE, OF OAKLAND, CALIFORNIA.

COMPOSITION FOR ABSORBING AND PUBIFYING THE WASTE PRODUCTS OF COMBUSTION.

No Drawing.

To all 'wlwin it may concern:

Be it known that 1, JOHN C. TATE, a citizen of the United States, and a resident'of the city of Oakland, county of Alameda, State of California, have made a new and useful inventionto wit, Improvements in Composition for Absorblng and Purifying thelVaste Products of Combustion; and I do hereby declare the following to be a full, clear, concise, and exact description of the same.

This invention relates particularly to an absorbent composition or substance, consisting particularly of the combination of a mineral matter, or a mineral substance and a binder, or a combination of said substances which will absorb, wholly or in part the toxic parts of v'itiated air or the injurious and objectionable waste gaseous products resulting from the combustion of vegetable or animal matter, or hydrocarbon oils or gases.

A further object of the invention is to provide a composition capable of retaining, absorbing and neutralizing moisture, gases and the disagreeable and injurious odors resulting from the combustion of animal, mineral and vegetable matter, permitting the combustion of such matter in heating devices within restricted areas so as to, or not, require outlets, flues, or ventilation, usually necessary -to the conventional type of oil or gas heater for carrying off the waste products of combustion. Other objects and advantages will appear as this description progresses.

In this specification, the invention is de-' scribed in the form considered to be the best, but it is to be understood that the invention is not limited to such form because it may be embodied in other forms; and it is also to be understood that in and by the claims followin the description, it is desired to cover the invention in whatsoever form it may be embodied.

The burning and combustion of hydrocarbon gases for heating and lighting, articularly the coal or water gas use in homes for illuminating and heating purposes, leaves residium exhaust gases which contain objectionable byproducts unhealthful for human inhalation, and produce disagreeable odors, create moisture and tend to deface or attack metallic and painted surfaces and organic materials.

My invention contemplates an absorbent Application filed November 16, 1922. Serial No. 601,894.

composition adapted to be contained within a suitable closure and to have the noxious exhaust gases (resulting from the combustion of hydrocarbons) to be passed through and in contact with such composition. Carbon dioxide, sulphur gases, water vapor and the like, contained in the said exhaust gases, will thereby be absorbed, purified, or neutralized, each action resulting 'in the creation and liberation of oxygen and the regeneration and purification of said exhaust gases into clean and wholesome air.

In the practical operation of my invention, a heater or stove, utilizing hydrocarbon gases for combustion purposes, would have a container, or retort mounted thereon and filled with lumps or particles of my absorbent composition. The exhaust gases from said burner would be passed through the container, intoand with contact with the absorbent composition, and then discharged into the air. I have found by directing the course of the heated gases throu h the absorbent composition, prior to releasing it into the atmosphere, that the greater part of the toxic constituents of the exhaust gases are absorbed, purified, .or neutralized, so that the heated air is released free of all noxious gaseous products and made fit for breathing purposes.

The regeneration, or purification of the heated gases, in this manner, eliminates the necessity of air vents to the said stove, and makes it possible to do with gas heaters what has been commonly done with other heating appliances that do not generate objectionable gaseous products. The porous nature of the absorbent composition is such that it holds or retains the waste gaseous products, and repeated experiments have shown that the absorbent composition is materially heavier after usage of a couple of months than when first placed in use, making it necessary to renew the composition only when saturated beyond a point of eiiicient absorption.

The composition is preferably formed of either a mineral absorbent, such as airslaked lime, burned gypsum, kaolin or clay. The mineral absorbent (lime) may be used either separately or mixed with a mineral binder and filler such as burned gypsum.

A small quantity of clay or kaolin may be mixed directly with lime or included as an ditional e emen in comb nat n h he lime and burned gypsum. Likewise, the mineral lime might be mixed directly with a vegetable material such as either wood charcoal, or with driedcorncobs. ments would be mixed in the following proportions, although it is to be understood that variations in the quantities of said elements clearly come withm the purview of this invention: lime, fourteen (14) to eighteen (18) parts; burned gypsum, three (3) to five (5) parts; and kaolin, two (2) to six (6) parts. The said approximate proportions would be adhered to when'the ingredients would be used either separately or mixed in any of the combinations previously set forth.

The elements or ingredients would be preferably mixed in a dry powdered condition. to which water in a suitable quantity would be added to form a workable semi-solid mass. The masswould then be shaped or divided into units of any predetermined size and suitably dried. After being dried, the units are hard and porous. The lime of the composition, which forms the greatest part thereof, acts as a-retainer or absorber of water,

vapor and of the carbon dioxide and sulphur gases. The kaolin or clay acts in a similar manner and incidentally may be so treated as to act as a deodorant. The burned The elegypsum when used, acts as a binder or filler for holding all of the elements together and,

furthermore, is porous and acts as a me.-

chanical absorbent.

Having thus described this invention,

what I claim and desire to secure by Letters Patent is:

1. A composition lacking a moisture content for purifying wastegaseous products of combustion comprising solely a hard porous mass consisting of a mixture of lime capable of absorbing and retaining moisture, gases and the disagreeable odors resulting from the combustion of animal and ,vege table matter, in combination with burned gypsum for holding the lime.

2. A composition lacking a moisture 'content for purifying the waste gaseous products of combustion comprising from filmteen (14) to eighteen (18) parts by weight of lime and three (3) to five (5) parts by weight of burned gypsum capable of absorbing and retaining moisture, ases, and the disagreeable odors resulting rom the combustion of animal and vegetable matter.

In testimony whereof, I have hereunto set my hand at San Francisco, California, this 3rd day of November 1922.

' I JOHN C. TATE.