Smoke clarifier

Claim 2

The apparatus defined in claim 1, in which the smoke passage has a circular cross section and the upper surface of the baffle is an upwardly tapered conical surface, the first row of water jet means includes an annular row of jets disposed above the conical surface of the baffle substantially coaxial therewith, spaced a substantial distance outward from the center of the baffle and projecting jets of water downward onto the upper surface of the baffle in a ring, and the water jet means of the second row being annular and located closer to the center of the baffle than such ring for projecting sprays through the ring of jets projected by the first row of water jet means.

Claim 3

Smoke-clarifying apparatus comprising an upright smoke passage having a circular cross section, a baffle in said smoke passage having an upwardly tapered conical upper surface and a lower edge portion spaced from the wall of said smoke passage for flow of smoKe upward around and past said baffle edge portion, an annular row of water jets disposed substantially coaxially above said conical surface for projecting jets of water downward onto such conical surface at a substantial glancing angle thereto for impingement against said baffle surface and projection of spray therefrom at a substantial angle of reflection into the smoke flowing past said baffle edge portion in a direction transversely of the direction of such smoke flow, a hollow cone spaced upwardly from said baffle conical upper surface and carrying said annular row of jets, and means for removing the water of said jets from such smoke passage with the material entrained thereby.

Claim 4

Smoke-clarifying apparatus comprising an upright smoke passage having a circular cross section, a baffle in said smoke passage having an upwardly tapered conical upper surface and a lower edge portion spaced from the wall of said smoke passage for flow of smoke upward around and past said baffle edge portion, an annular row of water jets disposed substantially coaxially above said conical surface for projecting jets of water downward onto such conical surface at a substantial glancing angle thereto for impingement against said baffle surface and projection of spray therefrom at a substantial angle of reflection into the smoke flowing past said baffle edge portion in a direction transversely of the direction of such smoke flow, a hollow cone spaced upwardly from said baffle conical upper surface closely overlying said annular row of jets and having its walls disposed generally parallel to the conical upper surface of said baffle, and means for removing the water of said jets from said smoke passage with the material entrained thereby.

Claim 5

The apparatus defined in claim 5, and additional jet means projecting a water jet upwardly against the underside of the hollow cone.

Claim 6

Smoke-clarifying apparatus comprising a smokestack including a lower expansion downwardly tapered transition piece, an upper contraction upwardly tapered transition piece and means joining said transition pieces to form a washing zone having a cross section expanded from the cross section of said smokestack below said expansion transition piece and above said contraction transition piece, a drainpipe extending longitudinally upward through the central portion of said smokestack, a runoff catch trough carried by said drainpipe and having its upper edge disposed above the bottom of said expansion transition piece and communicating with the interior of said drainpipe for collection of water in said catch trough and passage into said drainpipe, and water jet means including a row of jets encircling said washing zone above said runoff catch trough and projecting water jets from substantially the periphery of said washing zone substantially radially inward for passage of gas upward around the upper portion of said runoff catch trough and through the spray of said water jets.

Claim 7

The apparatus defined in claim 7, a draft-inducing pipe extending upwardly through the drainpipe at least substantially to the upper portion of the contraction transition piece for supplying draft-inducing air to the interior of the smokestack, and means for supplying air to said draft-inducing pipe.

Claim 8

The apparatus defined in claim 7, and burner means, located below the water jet means and below the drain-pipe catch trough, projecting flame into the smokestack.

Claim 9

Smoke-clarifying apparatus comprising a smokestack including a washing and combustion zone having a cross section expanded from the cross section of said smokestack below said washing and combustion zone, water jet means projecting sprays into smoke rising through said washing and combustion zone in a direction generally transversely of the direction of movement of such smoke for entraining in the water of such sprays material washed from the smoke, runoff catching means below said water jet means for collecting and draining out of said washing and combustion zone Water precipitated from said water jet means sprays, and burner means disposed below said water jet means and below the upper portion of said runoff catching means, disposed to project flame into smoke rising through said expanded washing and combustion zone generally transversely of the direction of movement of such smoke and in a direction corresponding to the direction of the water jet sprays.

Claim 10

The apparatus defined in claim 10, and supplemental air supply means including an enlarged smokestack portion larger than the portion of the smokestack therebelow and disposed below the expanded washing and combustion zone, and means for supplying air to said enlarged smokestack portion.