CN209325762U - The efficiently low product recuperation of heat of power plant utilizes system - Google Patents
The efficiently low product recuperation of heat of power plant utilizes system Download PDFInfo
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- CN209325762U CN209325762U CN201822141728.2U CN201822141728U CN209325762U CN 209325762 U CN209325762 U CN 209325762U CN 201822141728 U CN201822141728 U CN 201822141728U CN 209325762 U CN209325762 U CN 209325762U
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Abstract
The utility model provides a kind of efficiently low product recuperation of heat of power plant and utilizes system, including low product heat recovery apparatus, First Heat Exchanger, the second heat exchanger, water circulating pump and force (forcing) pump；Low temperature main condensate is connected to the 2nd low temperature main condensate import of the second heat exchanger, and after the heat exchange of the second heat exchanger, the high temperature main condensate after heating is connected to First Heat Exchanger.Advantage are as follows: for the feature of the low product heat of power plant's variety classes, exchanged heat twice to power plant's main condensate, it may be assumed that high temperature main condensate of power plant's main condensate first with the output of low product heat recovery apparatus carries out first time heat exchange；Then, the feature that the hydrophobic continuity of power plant's platoon flash vessel is good and temperature is high is utilized again, power plant's main condensate after exchanging heat for the first time was carried out directly to exchange heat for second with the hydrophobic progress of power plant platoon flash vessel again, thus power plant's main condensate temperature is effectively increased, the effective use for realizing all kinds of thermal mediums to power plant's discharge, has the advantages that effectively improve power plants generating electricity efficiency.
Description
Technical field
The utility model belongs to power plant's low product heat recovery technology field, and in particular to a kind of efficiently low product recuperation of heat benefit of power plant
Use system.
Background technique
Currently, each high-power station generates a large amount of waste water waste vapour in power generation process, and these discharged waste water waste vapour have
Have the characteristics that discharge capacity is big, temperature is high, carry a large amount of waste heats, the direct emission of these waste water waste vapour causes very big heat damage
It loses, the limited energy is made to be unable to get sufficient utilization.
Traditional low product heat recovery system only recycles heat, but does not account for how effectively improving generating efficiency problem.It returns
The waste heat of receipts is raised higher main condensate temperature, and to improving, generating efficiency is more advantageous.
It can be seen that power-plant waste waste vapour can be carried at present there is an urgent need to design a kind of effective recovery system
Waste heat for condensing water temperature heat it is higher, thus more effectively raising power plants generating electricity efficiency.
Utility model content
In view of the defects existing in the prior art, the utility model provides a kind of efficiently low product recuperation of heat of power plant using system,
It can effectively solve the above problems.
The technical solution adopted in the utility model is as follows:
The utility model provides a kind of efficiently low product recuperation of heat of power plant using system, including low product heat recovery apparatus (1), the
One heat exchanger (2), the second heat exchanger (3), water circulating pump (4) and force (forcing) pump (5)；
The discharge outlet of platoon water conveyance conduit (6) is connected to the 1st high temperature main condensate import of the First Heat Exchanger (2)
(2.1), after the First Heat Exchanger (2) heat exchange, the low temperature main condensate after cooling is by the 1st of the First Heat Exchanger (2)
Low temperature main condensate exports (2.2) discharge, and is connected to the low product heat by the 1st low temperature main condensate conveyance conduit (7) and returns
The platoon water water inlet (1.1) of receiving apparatus (1)；
The low product heat recovery apparatus (1) also respectively with power plant's deoxygenation gland steam exhauster (8), power plant's pipeline drain pipe (9), power plant
Heat supply drain pipe (10) and power plant's soot blowing drain pipe (11) connection；After vapour-liquid mixing, the low product heat recovery apparatus (1) passes through the
1 high temperature main condensate conveyance conduit (12) is connected to the 1st main water inlet of high temperature (3.1) of second heat exchanger (3), through described
After second heat exchanger (3) heat exchange, the water at low temperature after cooling is arranged by the 2nd main water out of low temperature (3.2) of second heat exchanger (3)
Out, and by reflux line (13) it is connected to the refluxing opening (1.2) of the low product heat recovery apparatus (1)；In the reflux line
(13) water circulating pump (4) is installed；
The force (forcing) pump (5) are installed on 2nd low temperature main condensate conveyance conduit (14)；Low temperature main condensate passes through described the
2 low temperature main condensate conveyance conduits (14) are connected to the 2nd low temperature main condensate import (3.3) of second heat exchanger (3), warp
After second heat exchanger (3) heat exchange, the high temperature main condensate after heating is solidifying by the 2nd high temperature master of second heat exchanger (3)
Outlet (3.4) discharge is born water, is connected to the 1st of the First Heat Exchanger (2) by the 2nd high temperature main condensate conveyance conduit (15)
Low temperature main condensate import (2.3), after the First Heat Exchanger (2) heat exchange, high temperature main condensate after heating is by described the
The 1st high temperature main condensate outlet (2.4) discharge of one heat exchanger (2), and even by the 3rd high temperature main condensate conveyance conduit (16)
It is connected to power plant's low-pressure heater condensate system.
The efficiently low product recuperation of heat of power plant provided by the utility model is had the advantage that using system
It for the feature of the low product heat of power plant's variety classes, is exchanged heat twice to power plant's main condensate, it may be assumed that product low first
After heat recovery apparatus recycles power plant's high temperature main condensate medium and high-temperature steam both different mediums, high temperature master is exported
Condensed water；And power plant's main condensate carries out first time heat exchange with this high temperature main condensate first；Then, and power plant's platoon is utilized to expand
The feature that the hydrophobic continuity of container is good and temperature is high carried out power plant's main condensate after exchanging heat for the first time and directly connected again with power plant
It arranges second of the hydrophobic progress of flash vessel to exchange heat, thus effectively increases power plant's main condensate temperature, realize to power plant's discharge
The effective use of all kinds of thermal mediums has the advantages that effectively improve power plants generating electricity efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that the efficiently low product recuperation of heat of power plant provided by the utility model utilizes system.
Specific embodiment
The technical issues of in order to keep the utility model solved, technical solution and beneficial effect are more clearly understood, below
In conjunction with accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific implementation described herein
Example only to explain the utility model, is not used to limit the utility model.
The utility model provides a kind of efficiently low product recuperation of heat of power plant using system, fills with reference to Fig. 1, including low product recuperation of heat
Set 1, First Heat Exchanger 2, the second heat exchanger 3, water circulating pump 4 and force (forcing) pump 5；
The discharge outlet of platoon water conveyance conduit 6 is connected to the 1st high temperature platoon water inlet 2.1 of First Heat Exchanger 2, through first
After heat exchanger 2 exchanges heat, the low temperature platoon water after cooling is discharged by the 1st low temperature platoon water out 2.2 of First Heat Exchanger 2, and is led to
Cross the platoon water water inlet 1.1 that the 1st low temperature platoon water conveyance conduit 7 is connected to low product heat recovery apparatus 1；
Low product heat recovery apparatus 1 also respectively with power plant deoxygenation gland steam exhauster 8, power plant's pipeline drain pipe 9, power plant's heat supply drain pipe
10 and power plant's soot blowing drain pipe 11 connect；After vapour-liquid mixing, low product heat recovery apparatus 1 passes through the 1st high temperature main condensate delivery pipe
Road 12 is connected to the 1st high temperature water inlet 3.1 of the second heat exchanger 3, after the heat exchange of the second heat exchanger 3, water at low temperature after cooling by
The main water out 3.2 of 2nd low temperature of the second heat exchanger 3 is discharged, and is connected to returning for low product heat recovery apparatus 1 by reflux line 13
Head piece 1.2；Water circulating pump 4 is installed in reflux line 13；
Force (forcing) pump 5 is installed on the 2nd low temperature main condensate conveyance conduit 14；Low temperature main condensate passes through the 2nd main condensation of low temperature
Water conveyance conduit 14 is connected to the 2nd low temperature main condensate import 3.3 of the second heat exchanger 3, after the heat exchange of the second heat exchanger 3, rises
High temperature main condensate after temperature is discharged by the 2nd high temperature main condensate outlet 3.4 of the second heat exchanger 3, by the 2nd main condensation of high temperature
Water conveyance conduit 15 is connected to the 1st low temperature main condensate import 2.3 of First Heat Exchanger 2, after the heat exchange of First Heat Exchanger 2, rises
High temperature main condensate after temperature is discharged by the 1st high temperature main condensate outlet 2.4 of First Heat Exchanger 2, and solidifying by the 3rd high temperature master
Bear water the condensate system that conveyance conduit 16 is connected to low-pressure heater.
The utility model provides a kind of efficiently low product recuperation of heat of power plant and utilizes system, working principle are as follows:
For the waste water waste vapour that power plant generates in power generation process, mainly include power plant's deoxygenation steam discharge, power plant's pipeline it is hydrophobic,
Power plant for thermal drain, power plant's soot blowing is hydrophobic and platoon flash vessel is hydrophobic；Wherein, the hydrophobic operating pressure of platoon flash vessel is pressed
0.588MPa is calculated, and temperature is about 158 DEG C；Compared with other waste water waste vapour, the hydrophobic good, temperature with continuity of platoon flash vessel
Higher advantage.
Based on this, is efficiently utilized for the more efficiently waste heat carried to power plant effluent waste vapour, it is solidifying to improve power plant master
Temperature is born water, to improve power plants generating electricity efficiency, the utility model is separately separated out by platoon flash vessel is hydrophobic, and process is such as
Under:
1, with reference to attached drawing, low product heat recovery apparatus is open steam-water injection, low product heat recovery apparatus normal pressure fortune
Row, recyclable device is interior and atmosphere communicates, and each road waste heat is all positive pressure or micro-positive pressure, it is ensured that the waste heat of each road different pressures
Smoothly reflux, therefore, power plant's deoxygenation steam discharge, power plant's pipeline be hydrophobic, power plant for thermal drain, power plant's soot blowing is hydrophobic is flowed into low product
In heat recovery apparatus, sufficient steam-water mixing is carried out；Mixed high-temperature-hot-water, temperature are 85-95 degree, pass through the 1st high temperature
Main condensate conveyance conduit 12 is transported to the second heat exchanger 3, and power plant's low temperature main condensate temperature is 30-40 degree, low by the 2nd
Warm main condensate conveyance conduit 14 enters the second heat exchanger 3, therefore, in the second heat exchanger 3, low temperature main condensate and low product heat
The high-temperature water that recyclable device provides carries out heat exchange, is achieved in the 1st utilization of the low product heat of power plant；
Temperature is increased to 75-85 degree after the heat absorption of low temperature main condensate, and the high-temperature water heat release that low product heat recovery apparatus provides
Afterwards, temperature is reduced to 30-40 degree；
2, with waste-heat condensed water, temperature is higher more advantageous to the raising of power plants generating electricity efficiency, therefore the power plant of 75-85 degree
Main condensate is transported in First Heat Exchanger 2 by the 2nd high temperature main condensate conveyance conduit 15, with platoon flash vessel it is hydrophobic into
Row heat exchange, power plant's main condensate that temperature is increased to 75-85 degree further absorb heat in First Heat Exchanger 2, and temperature is close to 100
Degree left and right, to be conveyed to the condensate system of low-pressure heater again；It is achieved in the 2nd utilization of the low product heat of power plant；
And after the hydrophobic heat release of platoon flash vessel, temperature is reduced to 100 degree or so, still has biggish UTILIZATION OF VESIDUAL HEAT IN at this time
Value, therefore, hydrophobic be also flowed into low product heat recovery apparatus of platoon flash vessel after heat release carries out heat recovery and utilization.
3, after the heat exchange of the second heat exchanger 3, temperature reduces the high-temperature water that low product heat recovery apparatus provides, and it is solidifying to form low temperature master
It bears water；
Water at low temperature is passed straight back to the cold source in low product heat recovery apparatus as vapour-liquid mixed heat exchanger, to absorb power plant
The vapor (steam) temperature of deoxygenation steam discharge, and become high-temperature water, the flow for the water at low temperature for flowing back into low product heat recovery apparatus is controlled,
Temperature in low product heat recovery apparatus is adjusted, keeps the effect of low product heat recovery apparatus perseverance liquid level constant temperature；And extra water at low temperature
Water purification reutilization system is then conveyed by pipeline 17.
In conclusion the utility model provides a kind of efficiently low product recuperation of heat of power plant using system, have the advantage that
It for the feature of the low product heat of power plant's variety classes, is exchanged heat twice to power plant's main condensate, it may be assumed that product low first
After heat recovery apparatus recycles power plant's high temperature aqueous medium and steam both different mediums, high-temperature water is exported；And power plant master
Condensed water carries out first time heat exchange with this high-temperature water first；Then, and utilize the hydrophobic continuity of power plant's platoon flash vessel good and warm
Spend high feature, carried out power plant's main condensate after exchanging heat for the first time again with power plant platoon flash vessel is hydrophobic is changed for the second time
Thus heat effectively increases power plant's main condensate temperature, realize the effective use of all kinds of thermal mediums to power plant's discharge, have
The advantages of effectively improving power plants generating electricity efficiency.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching should also regard the protection scope of the utility model.
Claims (1)
1. a kind of efficiently low product recuperation of heat of power plant utilizes system, which is characterized in that changed including low product heat recovery apparatus (1), first
Hot device (2), the second heat exchanger (3), water circulating pump (4) and force (forcing) pump (5)；
The discharge outlet of platoon water conveyance conduit (6) is connected to the 1st high temperature main condensate import of the First Heat Exchanger (2)
(2.1), after the First Heat Exchanger (2) heat exchange, the low temperature main condensate after cooling is by the 1st of the First Heat Exchanger (2)
Low temperature main condensate exports (2.2) discharge, and is connected to the low product heat by the 1st low temperature main condensate conveyance conduit (7) and returns
The platoon water water inlet (1.1) of receiving apparatus (1)；
The low product heat recovery apparatus (1) also respectively with power plant's deoxygenation gland steam exhauster (8), power plant's pipeline drain pipe (9), power plant's heat supply
Drain pipe (10) and power plant's soot blowing drain pipe (11) connection；After vapour-liquid mixing, the low product heat recovery apparatus (1) is high by the 1st
Warm main condensate conveyance conduit (12) is connected to the 1st main water inlet of high temperature (3.1) of second heat exchanger (3), through described
After two heat exchangers (3) heat exchange, the water at low temperature after cooling is arranged by the 2nd main water out of low temperature (3.2) of second heat exchanger (3)
Out, and by reflux line (13) it is connected to the refluxing opening (1.2) of the low product heat recovery apparatus (1)；In the reflux line
(13) water circulating pump (4) is installed；
The force (forcing) pump (5) are installed on 2nd low temperature main condensate conveyance conduit (14)；Low temperature main condensate is low by the described 2nd
Warm main condensate conveyance conduit (14) is connected to the 2nd low temperature main condensate import (3.3) of second heat exchanger (3), through institute
After stating the second heat exchanger (3) heat exchange, high temperature main condensate after heating by second heat exchanger (3) the 2nd main condensation of high temperature
Water out (3.4) discharge is connected to the 1st low of the First Heat Exchanger (2) by the 2nd high temperature main condensate conveyance conduit (15)
Warm main condensate import (2.3), after the First Heat Exchanger (2) heat exchange, the high temperature main condensate after heating is by described first
The 1st high temperature main condensate outlet (2.4) discharge of heat exchanger (2), and connected by the 3rd high temperature main condensate conveyance conduit (16)
To power plant's low-pressure heater condensate system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822141728.2U CN209325762U (en) | 2018-12-19 | 2018-12-19 | The efficiently low product recuperation of heat of power plant utilizes system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822141728.2U CN209325762U (en) | 2018-12-19 | 2018-12-19 | The efficiently low product recuperation of heat of power plant utilizes system |
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| Publication Number | Publication Date |
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| CN209325762U true CN209325762U (en) | 2019-08-30 |
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| CN201822141728.2U Active CN209325762U (en) | 2018-12-19 | 2018-12-19 | The efficiently low product recuperation of heat of power plant utilizes system |
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| Country | Link |
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2018
- 2018-12-19 CN CN201822141728.2U patent/CN209325762U/en active Active
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