Abstract: Apparatus for evaporating waste water having chemicals therein which cause foaming comprises a holding tank having an inlet for receiving waste water, one or more submerged combustion chambers with burners suspended within the holding tank, and, one or more foam skimming weirs located in an upper portion of the holding tank, the one or more foam skimming weirs defining one or more foam collection zones.

Abstract: Apparatus for evaporating waste water having dissolved solids therein comprising a holding tank having an inlet for receiving waste water, a submerged combustion chamber with burner suspended within the holding tank, the submerged combustion chamber having a plurality of vertical slots defined therein near a bottom thereof which span a substantial portion of a height of the submerged combustion chamber, a blower connected to provide air under positive pressure to the burner, and, a vent stack coupled to an upper portion of the holding tank for allowing water vapor to exit the holding tank.

Abstract: Apparatus for evaporating waste water having dissolved solids therein comprising a holding tank having an inlet for receiving waste water, a submerged combustion chamber with burner suspended within the holding tank, the submerged combustion chamber having a plurality of vertical slots defined therein near a bottom thereof which span a substantial portion of a height of the submerged combustion chamber, a blower connected to provide air under positive pressure to the burner, and, a vent stack coupled to an upper portion of the holding tank for allowing water vapor to exit the holding tank.

Abstract: Apparatus for evaporating waste water having chemicals therein which cause foaming comprises a holding tank having an inlet for receiving waste water, one or more submerged combustion chambers with burners suspended within the holding tank, and, one or more foam skimming weirs located in an upper portion of the holding tank, the one or more foam skimming weirs defining one or more foam collection zones.

Abstract: This invention relates to a novel two-stage heat recovery submerged combustion heating system. More particularly, this invention relates to a novel submerged combustion heating system with a lowered self-cooling combustion chamber and a two stage heat recovery system. The system can be installed singly or in combination with other similar submerged combustion systems to heat large quantities of liquids and liquid-solid solutions.

Abstract: This invention relates to a novel two-stage heat recovery submerged combustion heating system. More particularly, this invention relates to a novel submerged combustion heating system with a lowered self-cooling combustion chamber and a two stage heat recovery system. The system can be installed singly or in combination with other similar submerged combustion systems to heat large quantities of liquids and liquid-solid solutions.

Abstract: This invention relates to a novel submerged combustion system. More particularly, this invention relates to a method and apparatus for minimizing turbulence in a submerged combustion system. The submerged combustion system can be installed singly or in combination with other similar submerged combustion systems to heat large quantities of liquids and solutions. The invention is directed to a submerged combustion system wherein hot products of combustion are forced through a solution to heat the solution, the hot combustion products being created by burning a fuel with air in the interior of a retaining means, and the hot gaseous products of combustion being exhausted from the interior of the retaining means into the solution, the improvement comprising exhausting the hot gaseous products of combustion through a first port at a predetermined elevation below the level of the solution, the size of the port being predetermined to minimize foam being created at the surface of the solution.

Abstract: This invention is directed to a submerged combustion system comprising: (a) tank means for holding liquid, the tank means having a liquid inlet and a liquid outlet, and an exhaust gas outlet; (b) combustion chamber means positioned in at least a portion of the interior of the tank means; (c) means in the combustion chamber for enabling fuel and air to be introduced into the combustion chamber and being ignited to create a hot gaseous combustion product; (d) port means located in the combustion chamber means for enabling the hot gaseous combustion product to be exhausted from the interior of the combustion chamber into the tank means; (e) means for controlling the level of liquid in the tank means so that the hot gaseous combustion product passes through the liquid and the liquid heated by the hot gaseous combustion product is withdrawn from the tank means, and unheated liquid is introduced into the tank means through the liquid inlet; and (f) cooling liquid means located at the upper region of the combustion

Abstract: This invention relates to a novel submerged combustion system. More particularly, this invention relates to a novel submerged combustion system which can be installed singly or in combination with other similar submerged combustion systems to heat large quantities of liquids and solutions. The invention is directed to a method of regulating hydrostatic pressure in a fluid through which hot gas is being passed, and the fluid is heated by heat from the hot gas, comprising: (a) means for sensing temperature of the hot gas after it is passed through the fluid; (b) means for sensing the temperature of the fluid after it has been heated by the hot gas; (c) computer means programmed for comparing the temperature of the hot gas and the temperature of the hot fluid; (d) means for adjusting the distance the hot gas travels through the hot fluid, said means being regulated by said computer means.