Apparatus for vaporization of liquids having a boiling point lower than that of water, comprising a vessel having at least three narrow planar plena, contiguous to each other, so that there is a single metal wall between each adjacent pair of plena. Gaseous fuel and air is supplied to the first plen
Apparatus for vaporization of liquids having a boiling point lower than that of water, comprising a vessel having at least three narrow planar plena, contiguous to each other, so that there is a single metal wall between each adjacent pair of plena. Gaseous fuel and air is supplied to the first plenum to provide a downflowing flame and hot products of combustion which, at the bottom of the first plenum, pass through the wall into the second plenum, which is filled with water. The hot gases and water rise rapidly in the second plenum and the water flows over the intervening wall into the third plenum, which is also filled with water, which moves downwardly and back under the wall separating the second and third plena, and again rises in the second plenum. A vertical array of horizontal pipes is arranged in the third plenum, through which the liquid to be vaporized is flowed. Means are provided at the base of the first plenum, to distribute the flow of hot gases substantially uniformly over the cross-section, to provide more rapid and uniform heat transfer from the hot gases to the liquid. The hot water flowing downwardly over the pipes in the third plenum, transfers heat to the liquid therein, which flows countercurrently, upwardly through the pipes in zig-zag fashion. The cooled products of combustion are vented from the top of the space above the second and third plena to a stack. An optimum embodiment comprises a symmetrical assembly with duplicate second and third plena on each side of the first plenum.
대표청구항▼
Apparatus for vaporization of liquids having a boiling point lower than that of water, comprising; (a) at least a first, narrow planar plenum, oriented with its plane vertical, the first and second walls of said plenum being of metal and of substantial horizontal length; (b) a plurality of nozzles s
Apparatus for vaporization of liquids having a boiling point lower than that of water, comprising; (a) at least a first, narrow planar plenum, oriented with its plane vertical, the first and second walls of said plenum being of metal and of substantial horizontal length; (b) a plurality of nozzles spaced along the top of said plenum, for injecting fuel gas downwardly into said plenum, between said first and second walls and means to inject combustion air downwardly into said plenum, the bottom of said plenum closed; (c) at least a second, narrow planar plenum contiguous with said first plenum; (d) means to selectively flow said combustion products from the bottom of said first plenum into the bottom of said second plenum through horizontal short lengths of pipe, closed at their outer ends and welded to said first and second walls near the bottom of said first plenum, each of said pipes having a plurality of ports along the underside thereof; (e) at least a third plenum contiguous with said second plenum; (f) the outer wall of said third plenum taller than the inner wall of said third plenum, and including a top and bottom closure attached to said outer wall and said third plenum; (g) said second and third plena filled to a selected level with water; (h) a plurality of horizontal spaced pipes arranged in zig-zag connection within said third plenum, for carrying liquid to be vaporized; and (i) at least one stack means connected to the space above said second and third plena for the escape of cooled products of combustion to the atmosphere.
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