US990009A - Fume-condensing apparatus. - Google Patents

Description

G. G. RICHARDS.

FUMB (JONDENSING APPARATUS.

APPLIOATION FILED MAY 23, 1910.

990,009. Patented Apr. 18, 1911.

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used, and which apparatus may readily and GEORGE C. RICHARDS, 0F BERKELEY, CALIFORNIA.

FUME-CONDENSING APPARATUS.

Specification of Letters Patent.

Application filed May 23, 1910. Serial No. 562,916.

To all whom it may concern:

Be it known that I, GEORGE C. RICHARDS, citizen of the United States, residing at Berkeley, in the county of Alameda and State of California, have invented new and useful Improvements in Fume-Condensing Apparatus, of which the following is a specification.

This invention relates to fume condensing apparatus, and particularly to induceddraft, hydraulic condensers for use in conjunction with smelters, garbage crcmatories, and the like.

The object of my invention is to provide an apparatus of peculiar arrangement and design whereby a more efficient condensation of fumes arising from the smelting of ores or the reduction of or anic matter is obtained, and also to provice an apparatus which shall be economical in water consumption but which will have novel means for cooling andcleansing or aerating the water quickly be cleared of de osits accumu in the several parts of t 'e condenser.

The invention consists of the parts and the construction and.combination of parts as hereinafter more fully described and claimed, having reference to the accompanying drawings, in which tmg Figure 1 is a plan vlew of the apparatus Fig. 2 is a vertical central section of the condenser.

It is desirable to condense the obnoxious fumes and gases produced during smelting and other reducing processes before they escape into the atmosphere, so as to remove as far as possible the deleterious substances, and I have found that by subjecting the volatile products and smoke, as they leave a furnace, to the action first of a jet of water, and then to a chilling blast of air directed more or less at anangle to the How of the water jet and gas, practically all of thedestructive or obnoxious fumes are condensed, the values recovered, and the water cooled and aerated and rendered capable of re-use indefinitely.

In the resent embodiment of my invention the umes from the furnace A, which latter may be of any variety, are drawn into a substantially globular head 2 having a contracted orifice or discharge throat 3 formed by the abutting, oppositely flared, hollow cones 45; cone 5 being a part of head 2, and the cone 4 bolted to it. The throat 3 is preferably located approximately at right angles to the inlet 2 of the head 2. Axially 1n line with the discharge 3, and terminating practically in the center of the head 2, is a horizontally disposed nozzle 6 passing through the head and connecting by pipe 6' with a suitable pump 7, whereby water is forced out of nozzle 6 in a stream or jet which diverges and substantially fills the throat 3. I

Secured to cone 4 is an expanded cylinder or section 8 into which the stream from the nozzle flows and forces the uncondensed smoke, fumes and gases drawn from the furnace; the jet from nozzle 6 inducin a powerful draft through the furnace to efiect proper combustion. From section 8 the water and uncondensed and unprecipitated gases and matter which it carries are delivered into a condensing section or globular chamber 9 having a contracted discharge throat 10 which is set more or less at an angle to the middle cylinder 8, anddischarges into a tank or reservoir 11.

In addition to the condensing action on the uses and fumes by contact with and partlal absorption by the cool liquid jet from nozzle 6, they are chilled and mixed with a blast of air from a horizontally dis-.

posed nozzle 12 which is connected to an appropriate blower 13; the nozzle 12 being arranged to discharge in line with the throat 10.

The effect of the angular disposition of the sections 4289--10 is to constantly break the direction of flowof the fumes so that no continuous strata are created; but on the contrary, innumerable eddies are caused which interrupt the continuity of flow and permit an intimate commingling of the fumes, first with the water jet from nozzle 6, and later with the diverting chilling air blast from nozzle 12.

The spray from nozzle 6 induces a powerful draft of the gases from the furnace A, these gases becoming partially condensed in the chambers 29. The resulting precipitate, in the form, usually, of a sticky tarry mass, may be removed at intervals through tap holes in the bottom of the chambers 29, which holes are normally closed by doors 15 operated each by a suitable lever 16. The lever is so fulcrumed, at 17, and counterweighted, that the door will automatically Patented Apr. 18, 1911. a

close when the lever is free, and remain closed under all ordinary conditions, except for the undue accumulation of deposits in the chamber on top of the trap-door.

In addition to the counterweight of the handles of levers l6 tending to maintain the doors closed, the suction created by the jet actions in the apparatus also assist in maintaining the doors normally closed. While they may be opened by hand, they are enabled, by the construction shown, to open, discharge and close automatically.

The vacuum-creating effect of the air blast from nozzle 12 assists materially in the force of the induced draft through the apparatus; but the main beneficial effect of the air blast seems to. be due to the sudden expansion of the air as it leaves the nozzle 12 under high pressure, thereby becoming suddenly chilled and imparting its cold to thehot surrounding Water flow, insuring complete precipitation and condensation. It also aerates the Water, so that after delivery into the tank the water is ready immediately for re-use.

While it is preferred to use air, for the reason stated above, steam has been used successfully in lieu of the air blast from 12,

- and when used, only one-third the volume of water is required. The chief objection to steam, aside from the fact that it requires water and heat to create it, is that it is found that the steam heats up the water in tank 11, necessitating this water in the tank being cooled by other means.

In order to give access to the interior of the chambers 29 independent of the doors 15, manholes are provided which are normally closed by appropriate doors 18.

Having thus described my invention, what I claim and desire to secure by Letters Patent is- 1. The combination With a furnace having an outlet for smoke and fumes, of a chamber of greater diameter than said outlet and connecting with the outlet, a hydraulic ejector in said chamber and inducing a draft through the outlet from the furnace, fluid connections between the chamber and a settling tank, said connections including a second enlarged chamber and an intermediate pipe section, and an air eject-or in said second chamber between the hydraulic ejector and tank and operative to accelerate or assist in the induced draft and serving to cool the water as it enters the tank.

2. In a fume and gas condensing apparatus, the combination with a furnace, having an outlet, of a condenser having globular heads, an expanded section coupling the heads, one of said heads being connected with the outlet of the furnace and having a greater diameter than said outlet, jet nozzles in each head disposed at right angles to each other, and means whereby a jet of water is discharged by one nozzle and a blast of air by the other.

In testimony whereof I have hereunto set my hand in the presence of two subscribing Witnesses.

GEORGE C. RICHARDS. Witnesses:

CHARLES EDELMAN,

S. P. LATHROP.

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