US1525371A - Means for preventing smoke in the use of coal - Google Patents

Description

Fatented Feb. 3, 1925.

UNITED STATES FELIX F. CELMER, OF CLEVELAND, O'HIO.

MEANS FOR PREVENTING SMOKE IN THE USE OF COAL.

No Drawing.

To all whom it may concern:

Be it known that I, FELIX F ..GELMER, a citizen of the United States, residing at Cleveland. in the county of Cuyahoga and State of Ohio, have invented a new and useful Means for Preventing Smoke in the Use of Goal, of which the following is a specification.

This invention relates to a compound, which is adapted to be mixed with bituminous coal before the same is thrown into the furnace to prevent the emission of smoke from the coal while being burned, and also relates to a process for controlling the rate of combustion while the compound is being used.

The invention has for its objects not only to prevent the issuance of smoke from the firepot, but to consume the same and by the combustion thereof to utilize all the heat units contained therein. It is also an object of the invention to make it possible to use any grade or type of coal without smoke or smell, and to completely consume all combustible constituents of! the coal, leaving only a small percentage of fine ash free of cinders or clinkers. An incidental result of this is that the chimneys are kept clear of soot, and the coal is burned with gr -ater efficiency.

The compound above referred to consists preferably of four parts each of sulphur and common salt, one part each of saltpeter and potash, and two parts of lime. These ingredients are finely ground and thoroughly mixed, and about five pounds of the mixture are used for treating one ton of coal. The compound is spread by hand or shovel onto the coal as it stands in the storage pile, or in the coal bin. If the coal is in large lumps. it is desirable to spray it first with water so that the compound, which is in the form of a dry powder may adhere thereto, and become evenly distributed throughout the pile while the coal is being handled.

I have found that in using the composition in connection with hard coal, the

Application filed October 8, 1923.

Serial No. 667,197.

formula should be as follows: sulphur 50%; saltpeter El common salt l2 lime 20%; and potash 5%.

For the ordinary grade of soft coal, the formula should be as follows: sulphur 55%; saltpeter common salt 10%; lime potash 10%.

F or poorer grades of bituminous coal, the proportions must be varied, for in such cases more sulphur has to be employed.

The saltpeter and the common salt in the compound prevent the coal from adhering to or burning the grates, and prevent the coal from fusing together and forming clinkers. The combustion of the sulphur increases the heat, and together with the saltpet-er consumes the fine particles of carbon which would otherwise form smoke and soot, while the potash and lime combine with the sulphurous fumes and prevent offensive odors from escaping, and also prevent the same from attacking and injuring the grates, or other parts of the furnace. also helps to keep the fire burning until all of the combustible contents of the coal are consumed.

The invention may be used with any kind of coal, or with any kind of heating plant, although the relative amount of the compound to be used may vary somewhat under different conditions.

What is claimed is:

1. The herein described compound con sisting of a mixture of sulphur, common salt, saltpeter, potash and lime, in the form of powder thoroughly mixed.

2. The herein described compound consisting of a mixture containing four parts each of sulphur and common salt, one part each of saltpeter and potash, two parts of lime, all finely ground and in the form of powder, and thoroughly mixed.

In testimony, that I claim the foregoing as my own, I have hereto affixed my signature.

FELIX F. CELMER.

The potash