AN EVAPORATOR FOR TREATING WATER
First Claim
1. An evaporator for treating industrial waste water or produced water having an external vessel and an inner cavity, and a heat exchanging tube assembly, the external vessel comprising an opening closable by a hatch, the heat exchanging tube assembly comprising a first end tube sheet, a second end tube sheet and a plurality of heat exchange tubes received in the first end tube sheet and second end tube sheet and being insertable into and removable from the inner cavity through the opening, the evaporator further comprising a lifting frame, the lifting frame having a first end part for connection to the first end tube sheet, a second end part for connection to the second end tube sheet, and a rigid frame extending between the first end part and second end part, wherein the lifting frame is releasably connectable to the heat exchanging tube bundle to permit it to be inserted into or removed from the inner cavity.
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Accused Products
Abstract
An evaporator having an external vessel and an inner cavity, and a heat exchanging tube assembly, the external vessel comprising an opening closable by a hatch, the heat exchanging tube assembly being insertable into and removable from the inner cavity through the opening. In oil production and in other industrial processes, waste water is often produced which requires treatment. This water may be contaminated with amongst other contaminants Oil & Grease, minerals, Silica, and organic contamination.
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Citations
32 Claims
- 1. An evaporator for treating industrial waste water or produced water having an external vessel and an inner cavity, and a heat exchanging tube assembly, the external vessel comprising an opening closable by a hatch, the heat exchanging tube assembly comprising a first end tube sheet, a second end tube sheet and a plurality of heat exchange tubes received in the first end tube sheet and second end tube sheet and being insertable into and removable from the inner cavity through the opening, the evaporator further comprising a lifting frame, the lifting frame having a first end part for connection to the first end tube sheet, a second end part for connection to the second end tube sheet, and a rigid frame extending between the first end part and second end part, wherein the lifting frame is releasably connectable to the heat exchanging tube bundle to permit it to be inserted into or removed from the inner cavity.
- 9. An evaporator for treating industrial waste water or produced water, having a heat exchanging tube array, and a first plurality of nozzles disposed to introduce water to the heat exchanging tube array during normal operation, the evaporator comprising a second plurality of nozzles, the second plurality of nozzles being disposed to introduce cleaning fluid to the heat exchanging tube array during cleaning operation, wherein the first plurality of nozzles are located to form a falling film of water over the heat exchanging tube bundle, and wherein the second plurality of nozzles are offset from the first plurality of nozzles.
- 14. An evaporator for treating industrial waste water or produced water, comprising an external vessel having a longitudinal axis, the vessel comprising a plurality of longitudinal extending walls, said longitudinally extending walls being curved in a plane transverse to said longitudinal axis and an opening closable by a hatch, wherein the hatch comprises a first upturned lip, and a wall adjacent the hatch comprises a second upturned lip, wherein the first and second upturned lips abut when the hatch closes the opening, the hatch further comprising a first connection plate, and a wall adjacent the hatch comprises a second connection plate, and wherein a plurality of connection elements engage the first connection plate and second connection plate to maintain the hatch in a closed position.
Specification