Distillation process
AssigneeBlack & Veatch Holding Company
InventorMichael J. Eddington
Life of this patent
Estimating the term…
Abstract
An improved method for efficiently adding additional heat values into a distillation process to optimize the production of distillate from water.
Claims12
A distillation method for producing distillate from a feed water stream containing at least one dissolved material in a plurality of effects, each of the effects comprising a vessel, a heat exchanger and devices for transporting fluids, each of the effects receiving a feed water, a heated feed water or a combination thereof, the method comprising:
- a) passing a portion of the feed water at a first temperature to at least one effect and through a heat exchanger wherein the at least one effect to produce a distillate vapor and brine from the at least one effect;
- b) separating the distillate vapor from the brine;
- c) heating at least a portion of the heat exchangers by passing a stream comprising at least one of steam and distillate vapor from a downstream effect to the heat exchanger in the first effect at a second temperature;
- and,
- d) further heating a second quantity of the feed water by heat exchange with at least one external heat source to a third temperature greater than the first temperature to produce a heated feed water and passing a portion of the heated feed water to at least two effects.
A distillation method for producing distillate water from a feed water stream containing at least one dissolved material in a plurality of effects, each of the effects comprising a vessel, a heat exchanger and devices for transporting fluids, the method comprising:
- a) passing a portion of the feed water at a first temperature to a first effect;
- b) heating the heat exchanger in the first effect by passing an inlet stream comprising at least one of steam and a distillate vapor from a downstream effect to the heat exchanger in the first effect at a second temperature;
- c) producing distillate vapor and brine in the first effect;
- d) separating the distillate vapor from the brine;
- e) further heating a second quantity of the feed water by heat exchange with at least one external heat source to a third temperature greater than the first temperature to produce a heated feed water and passing a portion of the heated feed water to the first effect;
- and,
- f) passing the brine through additional effects to produce additional distillate vapor.
A distillation method for producing distillate from feed water containing at least one dissolved material in a plurality of effects, each of the effects comprising a vessel, a heat exchanger and devices for transporting fluids, the method comprising:
- a) charging a quantity of feed water to a first effect at a first temperature;
- b) passing a portion of the feed water to at least one effect and through a heat exchanger in the at least one effect to produce a distillate vapor and brine from the at least one effect;
- c) separating the distillate vapor from the brine;
- d) heating the heat exchanger in the first effect by passing a heating fluid to the heat exchanger in the first effect at a second temperature;
- and,
- e) heating a second quantity of the feed water by heat exchange with at least one external heat source to a third temperature greater than the first temperature to produce a heated feed water and passing a portion of the heated feed water to the first effect.
A distillation method for producing distillate from feed water containing at least one dissolved material in a plurality of effects, each of the effects comprising a vessel, a heat exchanger and devices for transporting fluids, the method comprising:
- a) charging a first quantity of a feed water stream at a first temperature to at least one effect and through a heat exchanger in the at least one effect to produce a distillate vapor and brine;
- b) separating the distillate vapor from the brine;
- c) heating the first effect heat exchanger electrically to a second temperature;
- and,
- d) further heating a second quantity of the feed water by heat exchange with at least one external heat source to a third temperature greater than the first temperature to produce a heated feed water and passing a portion of the heated feed water to at least one effect.
Dependencies are inferred from the claim text.