# US 4,392,875 A · Smog eliminator

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- Number: US 4,392,875 A
- Document ID: US4392875A
- Status: Granted
- Kind: A
- Application number: 06/347,949
- Filed: 1981-02-11
- Granted: 1983-07-12
- Earliest claimed: 1981-02-11
- Inventors: Roberto V. Celis
- Web page: https://patentgrep.com/patent/US4392875A

## CPC

- F23J 15/022: {for removing solid particulate material from the gasflow}
- B01D 47/06: Spray cleaning
- Y10S 261/09: Furnace gas scrubbers
- F23J: REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES (combustion apparatus for consuming smoke or fumes, e.g. exhaust gases, F23G7/06)
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

A device for eliminating carbon particulates from smoke including recirculating pressure water sprays within a spray booth mounted on a smoke stack, a conical deflector and a water collecting means mounted therein; the collected spray water being cleaned in a two compartment tank, partially filled with sand, and returned to the spray booth via a recirculation pump and a pressurized water reservoir.

## Claims

### Claim 1

A device for eliminating carbon particulates from smoke using continuous, recirculating, pressure water sprays in a uniquely designed spray booth which is mounted on a smoke stack and means for cleaning the recirculating pressure water, which comprises:
(a) a spray booth means comprising two conical sections joined at the bases thereof, the upper section being connected in a leak-proof way to the upper section of a smoke stack and the lower section being connected in a leak-proof way to the lower section of a smoke stack;
(b) a conical deflector means, centrally mounted by a mounting means within said spray booth means, having an upwardly directed vertex and a base diameter greater than the diameter of the lower section of said smoke stack;
(c) a spray means comprising a multiplicity of spray nozzels mounted around the inner circumference of the lower conical section of the spray booth means, adjacent to the juncture of the bases of the upper conical section and the lower conical section, and directed to spray above said conical deflector means within the upper conical section, whereby sprayed recirculating pressure water encounters rising smoke first as sprayed upward and second as deflected downward on striking the inside wall of the upper conical section of said spray booth;
(d) a water collecting means comprising the lower section of the smoke stack being connected to the lower conical section in a leak-proof way such that the upper-most edge of said smoke stack section protrudes into the spray booth means to form an annular water collecting gutter;
(e) a gravity drain means comprising a pipe mounted at the lowest edge of the lower conical section such that water in the water collecting means will drain through said pipe by gravity;
(f) an open water tank partially filled with sand and divided into two compartments by a partial vertical wall, said vertical wall being mounted so as to prevent flow from one compartment to the other except at the base thereof along the bottom of the open water tank;
(g) a recirculation pump; and
(h) a pressurized recirculation water reservoir; whereby, smoke containing carbon particulates in the smoke stack rising into the spray booth means has particulates removed therefrom by entrainment in pressured water sprayed into the upper part of said spray booth means, the washed smoke thereafter rising into the upper section of the smoke stack while the pressurized water containing carbon particulates drops onto the conical deflector means and is deflected into the water collecting means, from which said water drains through the gravity drain means into the first compartment of the open water tank, passing through the sand filling and under the vertical wall into the second compartment of the open water tank by gravity, the majority of the carbon particulates being removed in the sand filling, being drawn into the recirculation pump, pumped into the pressurized recirculation water reservoir, and returned to the spray booth means through the spray means.

### Claim 2 (depends on 1)

A device for eliminating carbon particulates from smoke using continuous, recirculating, pressure water sprays in a uniquely designed spray booth as recited in claim 1, wherein the spray booth comprises two compartments each of which comprises two conical sections joined and sealed at their bases, the two compartments being mounted in a smoke stack one on top of the other, joined by a cylindrical piece of a diameter the same as the smoke stack, having a multiplicity of spray nozzels mounted so as to pierce said cylindrical piece through leakproof openings and directed to spray both upwards into the upper compartment and downwards into the lower compartment, whereby the spray into the upper compartment is deflected downward from the upper conical section of the lower compartment.