Flash tank design
AssigneeSiemens Aktiengesellschaft
InventorUwe Juretzek
Life of this patent
Estimating the term…
Abstract
A water-steam circuit of a power plant includes at least one low-pressure steam system and a reservoir for waste water from the water-steam circuit, wherein the reservoir has, in addition to at least one waste water feed line, a further heat supply from the water-steam circuit and a steam outlet which is connected via a waste steam pipe to the low-pressure steam system of the water-steam circuit. A method for cleaning waste water from a power plant having a water-steam circuit, wherein the waste water is conducted into a reservoir and, in addition to a steam fraction generated by automatic evaporation of waste water in the reservoir, a water fraction that is also produced is evaporated using energy from the water-steam circuit, and the entire steam mass flow is introduced into a low-pressure steam system of the power plant.
Claims17
A water-steam circuit of a power plant comprising:
- at least one low-pressure steam system, and
- a vessel for waste water from the water-steam circuit, comprising at least one waste water inflow line configured to deliver waste water from a respective steam drum of the water-steam circuit to the vessel, wherein the waste water from the water-steam circuit functions as a first supply of heat from the water-steam circuit to the vessel,
- wherein the vessel is further configured to receive a discrete, second supply of heat from the water-steam circuit, effective to evaporate an accumulating water fraction in the vessel using energy from the second supply of heat from the water-steam circuit,
- the vessel further comprising a steam outlet that is connected, via a waste steam pipe, to the at least one low-pressure steam system of the water-steam circuit and adapted for introducing an entire steam mass flow from the vessel into the at least one low-pressure steam system of the power plant.
A method for purifying waste water of a power plant having a water-steam circuit, comprising:
- guiding the waste water from a steam drum of the water-steam circuit into a vessel via a waste water inflow line, wherein the waste water from the water-steam circuit functions as a first supply of heat from the water-steam circuit to the vessel, and
- in addition to producing a steam fraction by automatic evaporation of waste water in the vessel, evaporating a water fraction that continues to accumulate using energy from the water-steam circuit, wherein the energy is received in the vessel via a discrete, second supply of heat from the water-steam circuit, and
- guiding a total steam mass flow from the vessel into a low-pressure steam system of the power plant.
Dependencies are inferred from the claim text.