System and process for preheating evaporator feedwater
AssigneeVeolia Water Technologies, Inc.
InventorBenjamin S. Mack
Life of this patent
Estimating the term…
Abstract
An evaporation system employs a thermocompressor to recover heat associated with a distillate produced by an evaporator and to use the recovered heat to preheat evaporator feedwater. In one example, the thermocompressor produces a thermocompressor discharge that is directed into the deaerator, contacting and preheating the evaporator feedwater passing therethrough. In another example, the thermocompressor discharge is directed through a barometric condenser which contacts evaporator feedwater therein and condenses and in the process preheats the evaporator feedwater.
Claims10
1-18. (canceled)
A method of pre-heating and treating evaporator feedwater comprising:
- directing evaporator feedwater to and through a deaerator;
- directing the evaporator feedwater from the deaerator to an evaporator and evaporating the feedwater to produce a distillate;
- flash cooling the distillate and producing flash vapor;
- directing motive steam into a thermocompressor and inducing the flash vapor resulting from the flash cooling of the distillate into the thermocompressor where the flash vapor mixes with the motive steam to form a thermocompressor discharge;
- directing the thermocompressor discharge to the deaerator;
- and
- directing the thermocompressor discharge through the deaerator and contacting the evaporator feedwater therein to preheat and deaerate the evaporator feedwater.
A method of preheating and treating evaporator feedwater comprising:
- directing the evaporator feedwater to an evaporator and evaporating the feedwater to produce a distillate;
- flash cooling the distillate and producing flash vapor;
- directing motive steam to a thermocompressor and inducing the flash vapor resulting from the flash cooling of the distillate into the thermocompressor where the flash vapor mixes with the motive steam to form a thermocompressor discharge;
- prior to directing the evaporator feedwater to the evaporator, directing the evaporator feedwater to a barometric condenser;
- preheating the evaporator feedwater in the barometric condenser by directing the thermocompressor discharge into the barometric compressor and contacting the evaporator feedwater with the thermocompressor discharge;
- and
- directing the preheated evaporator feedwater to a deaerator and deaerating the evaporator feedwater and directing the deaerated feedwater to the evaporator.
Dependencies are inferred from the claim text.