Condenser type seawater desalting device with steam turbine generator unit

Abstract

The invention discloses a steam condenser type seawater desalting device with a steam turbine generator unit, which comprises a boiler, a steam turbine and a low-temperature multiple effect evaporation seawater desalting device, wherein the steam turbine is connected with the boiler; the steam exhaust output of the steam turbine is connected with the boiler through a steam condenser and a circulating water pump; and the condenser is a first effect evaporator of the low-temperature multiple effect evaporation seawater desalting device. The steam exhaust discharged by the steam turbine generator is used as the heat source of the low-temperature multiple effect evaporation seawater (brackish water) desalting device, i.e. the first effect evaporator of the low-temperature multiple effect evaporation seawater (brackish water) desalting device is substituted for the condenser of a power generating system, the steam exhaust discharged by the steam turbine is condensed into water and cyclically used, thus the costs of power generation and seawater desalination are greatly reduced, and the energy utilization rate of the unit is obviously improved.

Description

technical field [0001] The invention relates to a seawater desalination device, in particular to a condenser-type seawater desalination device of a generating steam turbine unit which can effectively utilize heat energy and reduce the cost of seawater desalination. Background technique [0002] At present, there are many structures of low-temperature multi-effect evaporation seawater desalination devices, such as multi-effect horizontal tube falling film evaporator and so on. The multi-effect horizontal tube falling film evaporator is composed of evaporator, separator, preheater, condenser, condensate tank, circulation pump and other components. The seawater (brackish water) feed liquid is evenly distributed to the horizontal heat exchange tube bundle in the device through the liquid spray or liquid distribution device, and flows into a uniform film from top to bottom under the action of gravity, vacuum induction and air flow. The middle part of the liquid is heated and vap...

AI Technical Summary

Problems solved by technology

The steam used by the existing multi-effect horizontal tube falling film evaporator is supplied by a specially set boiler (boiler, solar heating device), which consumes a lot of energy, and the cost of seawater desalination is relatively high

[0003] Existing thermal (thermal) power plants mainly have steam turbine units with two operating modes: condensing steam and back pressure. The unit, the steam that completes the work in the steam turbine also has a relatively high pressure, and is discharged to the steam pipe network for process demand or heat supply, but if the heat load is unstable, it will have an extremely adverse impact on the operation of the unit; for condensing steam Unit or condensing unit, the steam that has done work is discharged to the condenser as exhausted steam, and the exhausted steam is condensed in the condenser after being transported to the water treatment unit by the circulating water pump for recycling

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