Method of using nuclear power plant cooling tower waste heat to heat sea light raw water and reduce warm water discharge

Abstract

The invention relates to a method of using nuclear power plant cooling tower waste heat to heat sea light raw water and reduce warm water discharge. The method is characterized in that a heat exchange system is disposed between a cooling tower and raw sea water, and two heat exchange tubes are disposed in the heat exchange system; the water inlet end of one heat exchange tube is communicated with the water outlet end of the cooling tower, and the water outlet end is communicated with the sea by a mixing pool, a water discharge open channel, and a tidal reach; the water inlet end of the other heat exchange tube is communicated with the raw sea water, and the water outlet end is communicated with a sea water desalination system. The method is advantageous in that by using the discharged water waste heat of the nuclear power plant cooling tower, the sea water desalination raw sea water temperature can be increased, and therefore the civil engineering and equipment investment can be reduced, the system operation power consumption can be reduced, the cooling tower discharged water waste heat can be further used, and the waste can be turned into the wealth; and at the same time, the water outlet temperature of the cooling tower can be reduced, and the ecotope of the tidal reach and the discharge sea area can be facilitated.

Description

technical field

[0001] The invention belongs to the technical field of nuclear power, and in particular relates to a method for heating desalinated raw water with waste heat from a cooling tower of a nuclear power plant and reducing temperature emission. Background technique

[0002] In our country, the seawater desalination process of nuclear power plants under construction and under construction has adopted the reverse osmosis seawater desalination technology. Since the water temperature has a great influence on the water flow rate of the reverse osmosis device, that is, every time the water temperature changes by 1 °C, the inlet water pressure remains unchanged. In the case of , the water production will increase or decrease by about 2.7%. Considering that the original seawater temperature in the north is too low in winter (taking Bohai Bay as an example, it is about -1°C), some measures to increase the water temperature will be taken or circulating water drainage will be...

Examples

Embodiment Construction

[0018] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0019] Such as figure 1 Shown, is the method for heating desalinated raw water with waste heat from a cooling tower of a nuclear power plant of the present invention and reducing temperature emission, comprising the following steps:

[0020] 1) A heat exchange system is arranged between the cooling tower 9 and the raw seawater, and two sets of heat exchange tubes are arranged in the heat exchange system;

[0021] 2) The water inlet end of one group of heat exchange tubes is connected with the cooling tower circulating water drainage end, and the water outlet end is connected with the sea 12 through the mixing tank 14, the drainage pump 8, the open drainage channel 10, and the tidal river section 11;

[0022] 3) The water inlet end of another group of heat exchange tubes is connected with the original seawater, and the w...

technical field

[0001] The invention belongs to the technical field of nuclear power, and in particular relates to a method for heating desalinated raw water with waste heat from a cooling tower of a nuclear power plant and reducing temperature emission. Background technique

[0002] In our country, the seawater desalination process of nuclear power plants under construction and under construction has adopted the reverse osmosis seawater desalination technology. Since the water temperature has a great influence on the water flow rate of the reverse osmosis device, that is, every time the water temperature changes by 1 °C, the inlet water pressure remains unchanged. In the case of , the water production will increase or decrease by about 2.7%. Considering that the original seawater temperature in the north is too low in winter (taking Bohai Bay as an example, it is about -1°C), some measures to increase the water temperature will be taken or circulating water drainage will be...

Examples

Embodiment Construction

[0018] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0019] Such as figure 1 Shown, is the method for heating desalinated raw water with waste heat from a cooling tower of a nuclear power plant of the present invention and reducing temperature emission, comprising the following steps:

[0020] 1) A heat exchange system is arranged between the cooling tower 9 and the raw seawater, and two sets of heat exchange tubes are arranged in the heat exchange system;

[0021] 2) The water inlet end of one group of heat exchange tubes is connected with the cooling tower circulating water drainage end, and the water outlet end is connected with the sea 12 through the mixing tank 14, the drainage pump 8, the open drainage channel 10, and the tidal river section 11;

[0022] 3) The water inlet end of another group of heat exchange tubes is connected with the original seawater, and the w...

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