CN117142686A - Energy-saving system - Google Patents

Energy-saving system Download PDF

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Publication number
CN117142686A
CN117142686A CN202311066768.4A CN202311066768A CN117142686A CN 117142686 A CN117142686 A CN 117142686A CN 202311066768 A CN202311066768 A CN 202311066768A CN 117142686 A CN117142686 A CN 117142686A
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CN
China
Prior art keywords
water
heat exchanger
stage heat
outlet end
exchanger
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311066768.4A
Other languages
Chinese (zh)
Inventor
王君
严志勇
焦灵燕
马宏飞
布仁
刘万珍
郭晨
闫晓宇
余成印
杨殿臣
和和
陈朋强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Inner Mongolia Power Survey & Design Institute Co ltd
Original Assignee
Inner Mongolia Power Survey & Design Institute Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Inner Mongolia Power Survey & Design Institute Co ltd filed Critical Inner Mongolia Power Survey & Design Institute Co ltd
Priority to CN202311066768.4A priority Critical patent/CN117142686A/en
Publication of CN117142686A publication Critical patent/CN117142686A/en
Pending legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
    • F22D1/003—Feed-water heater systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D11/00—Feed-water supply not provided for in other main groups
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/16—Treatment of water, waste water, or sewage by heating by distillation or evaporation using waste heat from other processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/02—Non-contaminated water, e.g. for industrial water supply
    • C02F2103/023—Water in cooling circuits
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/10—Energy recovery

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  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Water By Ion Exchange (AREA)

Abstract

The invention discloses an energy-saving system, comprising: the device comprises a condensate water recovery water tank, a heat exchanger, an iron removal filter, a mixed ion exchanger and a demineralized water tank; the water outlet end of the condensed water recovery water tank is connected with the heat exchanger through a condensed water booster pump; the heat exchanger is provided with three stages which are sequentially connected in series, a hot fluid inlet of the first-stage heat exchanger is connected with the condensate booster pump, and a hot fluid outlet of the third-stage heat exchanger is sequentially connected with the iron removal filter and the mixed ion exchanger; the water outlet end of the mixed ion exchanger is connected with the cold fluid inlet of the primary heat exchanger, the cold fluid inlet of the secondary heat exchanger is connected with a primary chemical professional makeup water system, and the water inlet end of the desalted water tank is connected with the cold fluid outlets of the primary heat exchanger and the secondary heat exchanger. The system treats the industrial steam backwater through the iron removal filter and the mixed ion exchanger, and recycles the industrial steam backwater; the heat exchange between the desalted water and the industrial steam backwater is realized through the primary heat exchanger and the secondary heat exchanger, and the heat of the industrial steam backwater is fully utilized.

Description

Energy-saving system
Technical Field
The invention relates to the technical field of backpressure units, in particular to an energy-saving system.
Background
The back pressure unit is a main stream model for industrial steam supply, and industrial steam backwater often has higher temperature and higher heat, and needs to be cooled to return to the unit again.
At present, circulating cooling water is generally used for cooling industrial steam backwater, and then the circulating cooling water is cooled by a cooling tower to form twice heat exchange. The cooling technology can not recycle the heat of the industrial steam backwater, so that energy waste is caused; meanwhile, industrial steam mostly adopts demineralized water of a power plant, the technology cannot recycle industrial steam backwater, and a chemical professional supply system is required to be used for supplying the demineralized water, and the demineralized water is preheated, so that the production cost is seriously increased.
Disclosure of Invention
The invention aims to provide an energy-saving system. The method can realize the effective recovery of heat of the industrial steam backwater, can realize the recovery of the industrial steam backwater, and heats desalted water supplied by a chemical professional supply system in the recovery process, thereby realizing the full utilization of heat, avoiding waste and being beneficial to reducing the production cost.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the invention provides an energy-saving system, comprising:
the device comprises a condensate water recovery water tank, a heat exchanger, an iron removal filter, a mixed ion exchanger and a demineralized water tank;
the water inlet end of the condensed water recovery water tank is connected with the industrial steam backwater end of the unit, and the water outlet end of the condensed water recovery water tank is connected with a condensed water booster pump;
the heat exchanger includes: the device comprises a first-stage heat exchanger, a second-stage heat exchanger and a third-stage heat exchanger, wherein a hot fluid inlet of the first-stage heat exchanger is connected with an outlet of a condensate booster pump, a hot fluid inlet of the second-stage heat exchanger is connected with a hot fluid outlet of the first-stage heat exchanger, and a hot fluid inlet of the third-stage heat exchanger is connected with a hot fluid outlet of the second-stage heat exchanger;
the water inlet end of the iron removal filter is connected with the hot fluid outlet of the three-stage heat exchanger, and the water outlet end of the iron removal filter is connected with the water inlet end of the mixed ion exchanger;
the water outlet end of the mixed ion exchanger is connected with the cold fluid inlet of the primary heat exchanger, and the cold fluid outlet of the primary heat exchanger is connected with the water inlet end of the desalting water tank;
the cold fluid inlet of the secondary heat exchanger is connected with the water outlet end of the primary chemical professional make-up water system, and the cold fluid outlet of the secondary heat exchanger is connected with the water inlet end of the desalting water tank;
the cold fluid inlet of the three-stage heat exchanger is connected with the water outlet end of the circulating cooling water system, and the cold fluid outlet of the three-stage heat exchanger is connected with the water return end of the circulating cooling water system;
the water outlet end of the desalting water tank is connected with the water supplementing end of the unit through a desalting water pump.
Preferably, the energy saving system further includes:
the slag cooler is characterized in that a cooling water inlet end of the slag cooler is connected with a water outlet end of a desalting water pump, and a cooling water outlet end of the slag cooler is connected with a water supplementing end of the unit through a deaerator.
Preferably, the energy saving system further includes:
the water inlet end of the resin catcher is connected with the water outlet end of the mixed ion exchanger, and the water outlet end of the resin catcher is connected with the cold fluid inlet of the primary heat exchanger.
Preferably, the energy saving system further includes:
and the outlet end of the resin transfer tank is connected with the water inlet end of the mixed ion exchanger.
Preferably, the energy saving system further includes:
a switching controller, a temperature sensor and a cooling water control valve;
the temperature sensor is arranged at the hot fluid outlet of the three-stage heat exchanger and is electrically connected with the conversion controller, the cooling water control valve is arranged between the cold fluid inlet of the three-stage heat exchanger and the water outlet end of the circulating cooling water system, and the cooling water control valve is electrically connected with the conversion controller.
Preferably, the energy saving system further comprises;
a three-way valve and a recirculation line;
the water inlet end of the three-way valve is connected with the hot fluid outlet of the three-stage heat exchanger, the first water outlet end of the three-way valve is connected with the water inlet end of the iron removal filter, the second water outlet end of the three-way valve is connected with the recycling pipeline, the recycling pipeline is connected with the water inlet end of the condensate water recycling water tank, and the three-way valve is electrically connected with the conversion controller.
Preferably, the condensate booster pumps are provided in two groups and are connected in parallel to each other.
Preferably, the demineralized water pumps are provided with at least three groups and are connected in parallel with each other.
Preferably, the iron removing filters are provided with at least three groups and are connected in parallel with each other.
Preferably, the hybrid ion exchanger is provided with at least three groups and is connected in parallel to each other.
The scheme of the invention at least comprises the following beneficial effects:
1. according to the scheme, the iron removal filter is used for removing iron from the industrial steam backwater, and the mixed ion exchanger is used for removing salt from the industrial steam backwater to obtain desalted water, so that the industrial steam backwater is recycled, and the cost is reduced;
2. according to the scheme, the heat exchange between the desalted water obtained by the mixed ion exchanger and the industrial steam backwater is realized through the primary heat exchanger, the heat exchange between the desalted water supplemented by the primary chemical professional water supplementing system and the industrial steam backwater is realized through the secondary heat exchanger, the heat of the industrial steam backwater is fully utilized to heat the desalted water, the supplement of the desalted water to the unit is realized, the recycling of the heat of the industrial steam backwater is realized, the efficiency of the unit is improved, and the production cost is reduced.
Drawings
FIG. 1 is a schematic diagram of a system architecture in an embodiment of the invention;
FIG. 2 is a block diagram of a control system in an embodiment of the invention.
The reference numerals are explained as follows:
1. a condensate recovery water tank; 2. a condensate booster pump; 3. a primary heat exchanger; 4. a secondary heat exchanger; 5. a three-stage heat exchanger; 6. an iron removal filter; 7. resin transfer canning; 8. a mixed ion exchanger; 9. a resin catcher; 10. a desalting water tank; 11. a desalting water pump; 12. a slag cooler; 13. a primary chemical specialized make-up water system; 14. a circulating cooling water system; 15. a recirculation line; 16. a switching controller; 17. a temperature sensor; 18. a cooling water control valve; 19. and a three-way valve.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
As shown in fig. 1-2, the present invention provides an energy saving system comprising:
the device comprises a condensate water recovery water tank 1, a heat exchanger, an iron removal filter 6, a mixed ion exchanger 8 and a desalted water tank 10;
the water inlet end of the condensed water recovery water tank 1 is connected with the industrial steam backwater end of the unit, and the water outlet end of the condensed water recovery water tank 1 is connected with a condensed water booster pump 2;
the heat exchanger includes: the device comprises a first-stage heat exchanger 3, a second-stage heat exchanger 4 and a third-stage heat exchanger 5, wherein a hot fluid inlet of the first-stage heat exchanger 3 is connected with an outlet of the condensate booster pump 2, a hot fluid inlet of the second-stage heat exchanger 4 is connected with a hot fluid outlet of the first-stage heat exchanger 3, and a hot fluid inlet of the third-stage heat exchanger 5 is connected with a hot fluid outlet of the second-stage heat exchanger 4;
the water inlet end of the iron removal filter 6 is connected with the hot fluid outlet of the three-stage heat exchanger 5, and the water outlet end of the iron removal filter 6 is connected with the water inlet end of the mixed ion exchanger 8;
the water outlet end of the mixed ion exchanger 8 is connected with the cold fluid inlet of the primary heat exchanger 3, and the cold fluid outlet of the primary heat exchanger 3 is connected with the water inlet end of the desalted water tank 10;
the cold fluid inlet of the secondary heat exchanger 4 is connected with the water outlet end of the primary chemical professional make-up water system 13, and the cold fluid outlet of the secondary heat exchanger 4 is connected with the water inlet end of the demineralized water tank 10;
the cold fluid inlet of the three-stage heat exchanger 5 is connected with the water outlet end of the circulating cooling water system 14, and the cold fluid outlet of the three-stage heat exchanger 5 is connected with the water return end of the circulating cooling water system 14;
the water outlet end of the desalting water tank 10 is connected with the water supplementing end of the unit through a desalting water pump 11.
In the present embodiment of the present invention,
the industrial steam backwater enters a condensate recovery water tank 1, the industrial steam backwater is sent into a heat exchanger through a condensate booster pump 2, the industrial steam backwater is subjected to heat exchange through a primary heat exchanger 3, a secondary heat exchanger 4 and a tertiary heat exchanger 5, the industrial steam backwater enters an iron removal filter 6 for iron removal after the temperature of the industrial steam backwater is reduced, the industrial steam backwater subjected to iron removal enters a mixed ion exchanger 8 for desalination, the industrial steam backwater subjected to iron removal and desalination treatment through the iron removal filter 6 and the mixed ion exchanger 8 is subjected to desalination treatment to obtain desalted water, and 73.6% -100% recovery of the industrial steam backwater is realized;
the industrial steam backwater is subjected to iron removal and desalination treatment, the obtained desalted water enters a cold fluid inlet of the primary heat exchanger 3, enters the primary heat exchanger 3, exchanges heat with the industrial steam backwater, and enters a desalted water tank 10 through a cold fluid outlet of the primary heat exchanger 3; the primary chemical professional water supplementing system 13 injects desalted water into the secondary heat exchanger 4 through a cold fluid inlet of the secondary heat exchanger 4, the desalted water of the secondary heat exchanger 4 exchanges heat with industrial steam backwater, and the desalted water absorbing heat enters the desalted water tank 10 through a cold fluid outlet of the secondary heat exchanger 4; the demineralized water in the demineralized water tank 10 flows back into the unit under the action of the demineralized water pump 11, the unit is supplemented with the demineralized water, the demineralized water is heated by utilizing the heat of the industrial steam backwater through the primary heat exchanger 3 and the secondary heat exchanger 4, the recovery of 94.3-56.5% of the industrial steam supply heat is realized, the heat of the industrial steam backwater is effectively utilized, the demineralized water supplementing temperature of the unit is effectively improved, the unit efficiency is improved, and the production cost is reduced.
Preferably, the primary heat exchanger 3, the secondary heat exchanger 4 and the tertiary heat exchanger 5 are all plate heat exchangers.
In an alternative embodiment of the present invention, the apparatus further includes:
the slag cooler 12, the cooling water inlet end of the slag cooler 12 is connected with the water outlet end of the demineralized water pump 11, and the cooling water outlet end of the slag cooler 12 is connected with the water supplementing end of the unit through the deaerator.
In this embodiment of the present invention, the process is performed,
the demineralized water in the demineralized water tank 10 enters the cold slag device 12 under the action of the demineralized water pump 11, and enters the deaerator to remove oxygen after absorbing the waste heat of fuel, finally flows back into the unit, and can absorb the waste heat of fuel by the demineralized water through arranging the cold slag device 12, so that the waste heat of the unit is further recovered, the demineralized water supplementing temperature of the unit is effectively improved, the unit efficiency is improved, and the production cost is reduced.
In an alternative embodiment of the present invention, the apparatus further includes:
the water inlet end of the resin catcher 9 is connected with the water outlet end of the mixed ion exchanger 8, and the water outlet end of the resin catcher 9 is connected with the cold fluid inlet of the primary heat exchanger 3.
In this embodiment of the present invention, the process is performed,
resin mixed in desalted water obtained after the treatment of the mixed ion exchanger 8 can be intercepted and captured through the resin catcher 9, so that the resin is prevented from flowing into the unit along with the desalted water in a backflow way.
In an alternative embodiment of the present invention, the apparatus further includes:
the outlet end of the resin transfer tank 7 is connected with the water inlet end of the mixed ion exchanger 8.
In this embodiment of the present invention, the process is performed,
resin can be supplemented into the mixed ion exchanger 8 through the resin transfer tank 7, resin lost by the mixed ion exchanger 8 is supplemented, and the desalting effect of the mixed ion exchanger 8 on industrial steam backwater is ensured.
In an alternative embodiment of the present invention, the apparatus further includes:
a switching controller 16, a temperature sensor 17, and a cooling water control valve 18;
the temperature sensor 17 is arranged at the hot fluid outlet of the three-stage heat exchanger 5, the temperature sensor 17 is electrically connected with the conversion controller 16, the cooling water control valve 18 is arranged between the cold fluid inlet of the three-stage heat exchanger 5 and the water outlet end of the circulating cooling water system 14, and the cooling water control valve 18 is electrically connected with the conversion controller 16.
In this embodiment of the present invention, the process is performed,
the temperature sensor 17 detects the temperature of the industrial steam backwater flowing out of the hot fluid outlet of the three-stage heat exchanger 5, when the temperature is between 35 and 45 ℃, the conversion controller 16 controls the cooling water control valve 18 to be closed, so that the cooling water in the circulating cooling water system 14 cannot enter the cold fluid inlet of the three-stage heat exchanger 5, the three-stage heat exchanger 5 is in a non-working state, and at the moment, the primary heat exchanger 3 and the secondary heat exchanger 4 are utilized to exchange heat for the industrial steam backwater; when the temperature exceeds 45 ℃, the switching controller 16 controls the cooling water control valve 18 to be opened, cooling water in the circulating cooling water system 14 enters the cold fluid inlet of the three-stage heat exchanger 5, the three-stage heat exchanger 5 works, and the waste heat of the industrial steam backwater is absorbed by the cooling water, so that the temperature of the industrial steam backwater flowing out of the hot fluid outlet of the three-stage heat exchanger 5 is controlled between 35 and 45 ℃, and the temperature of the industrial steam backwater meets the working temperature requirement of the mixed ion exchanger 8.
In an alternative embodiment of the present invention, the apparatus further includes:
a three-way valve 19 and a recirculation line 15;
the water inlet end of the three-way valve 19 is connected with the hot fluid outlet of the three-stage heat exchanger 5, the first water outlet end of the three-way valve 19 is connected with the water inlet end of the iron removal filter 6, the second water outlet end of the three-way valve 19 is connected with the recycling pipeline 15, the recycling pipeline 15 is connected with the water inlet end of the condensate water recycling water tank 1, and the three-way valve 19 is electrically connected with the conversion controller 16.
In this embodiment of the present invention, the process is performed,
when the cooling water control valve 18 is opened and the three-stage heat exchanger 5 is in a working state, when the temperature of the industrial steam backwater flowing out of the hot fluid outlet of the three-stage heat exchanger 5 is between 35 and 45 ℃, the three-way valve 19 is controlled by the conversion controller 16, so that the industrial steam backwater flowing out of the hot fluid outlet of the three-stage heat exchanger 5 enters the iron removal filter 6 to remove iron from the industrial steam backwater; when the temperature of the industrial steam backwater flowing out of the hot fluid outlet of the three-stage heat exchanger 5 exceeds 45 ℃, the conversion controller 16 controls the three-way valve 19 to enable the industrial steam backwater flowing out of the hot fluid outlet of the three-stage heat exchanger 5 to reenter the inside of the condensate water recovery water tank 1 through the recirculation pipeline 15, and the industrial steam backwater is repeatedly cooled through the first-stage heat exchanger 3, the second-stage heat exchanger 4 and the three-stage heat exchanger 5 until the temperature of the industrial steam backwater flowing out of the hot fluid outlet of the three-stage heat exchanger 5 is between 35 and 45 ℃; the temperature of the industrial steam backwater flowing out of the hot fluid outlet of the three-stage heat exchanger 5 can be controlled between 35 ℃ and 45 ℃ so that the temperature of the industrial steam backwater meets the working temperature requirement of the mixed ion exchanger 8.
In the above-described embodiment of the present invention, the condensate booster pumps 2 are provided in two groups and are connected in parallel with each other.
In this embodiment of the present invention, the process is performed,
one set of condensate booster pumps 2 is in a working state, the other set of condensate booster pumps 2 is in a standby state, and when one set of condensate booster pumps 2 fails, the other set of condensate booster pumps 2 is used, so that the normal operation of the system is ensured.
In the above-described embodiment of the present invention, the brine pump 11 is provided with at least three groups and is connected in parallel with each other.
In this embodiment of the present invention, the process is performed,
one group of desalting water pumps 11 are in a standby state, and the other two groups of desalting water pumps 11 work simultaneously and respectively bear 50% of efficiency, so that the safety of internal equipment of the system is ensured, and the normal work of the system is ensured.
In the above-described embodiment of the present invention, the iron removing filters 6 are provided with at least three groups and are connected in parallel with each other.
In this embodiment of the present invention, the process is performed,
one group of iron removing filters 6 is in a standby state, and the other two groups of iron removing filters 6 work simultaneously and respectively bear 50% of efficiency, so that the safety of internal equipment of the system is ensured, and the normal work of the system is ensured.
In the above-described embodiment of the present invention, the hybrid ion exchangers 8 are provided with at least three groups and are connected in parallel with each other.
In this embodiment of the present invention, the process is performed,
one group of mixed ion exchangers 8 are in a standby state, and the other two groups of mixed ion exchangers 8 work simultaneously and respectively bear 50% of efficiency, so that the safety of internal equipment of the system is ensured, and the normal work of the system is ensured.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.

Claims (10)

1. An energy saving system, characterized in that: comprising the following steps:
the device comprises a condensate water recovery water tank (1), a heat exchanger, an iron removal filter (6), a mixed ion exchanger (8) and a demineralized water tank (10);
the water inlet end of the condensed water recovery water tank (1) is connected with the industrial steam backwater end of the unit, and the water outlet end of the condensed water recovery water tank (1) is connected with a condensed water booster pump (2);
the heat exchanger includes: the device comprises a first-stage heat exchanger (3), a second-stage heat exchanger (4) and a third-stage heat exchanger (5), wherein a hot fluid inlet of the first-stage heat exchanger (3) is connected with an outlet of a condensate booster pump (2), a hot fluid inlet of the second-stage heat exchanger (4) is connected with a hot fluid outlet of the first-stage heat exchanger (3), and a hot fluid inlet of the third-stage heat exchanger (5) is connected with a hot fluid outlet of the second-stage heat exchanger (4);
the water inlet end of the iron removal filter (6) is connected with the hot fluid outlet of the three-stage heat exchanger (5), and the water outlet end of the iron removal filter (6) is connected with the water inlet end of the mixed ion exchanger (8);
the water outlet end of the mixed ion exchanger (8) is connected with the cold fluid inlet of the primary heat exchanger (3), and the cold fluid outlet of the primary heat exchanger (3) is connected with the water inlet end of the desalting water tank (10);
the cold fluid inlet of the secondary heat exchanger (4) is connected with the water outlet end of the primary chemical professional make-up water system (13), and the cold fluid outlet of the secondary heat exchanger (4) is connected with the water inlet end of the desalting water tank (10);
the cold fluid inlet of the three-stage heat exchanger (5) is connected with the water outlet end of the circulating cooling water system (14), and the cold fluid outlet of the three-stage heat exchanger (5) is connected with the water return end of the circulating cooling water system (14);
the water outlet end of the desalting water tank (10) is connected with the water supplementing end of the unit through a desalting water pump (11).
2. The energy conservation system of claim 1, wherein: further comprises:
the slag cooler (12), the cooling water inlet end of the slag cooler (12) is connected with the water outlet end of the demineralized water pump (11), and the cooling water outlet end of the slag cooler (12) is connected with the water supplementing end of the unit through the deaerator.
3. The energy conservation system of claim 2, wherein: further comprises:
the water inlet end of the resin catcher (9) is connected with the water outlet end of the mixed ion exchanger (8), and the water outlet end of the resin catcher (9) is connected with the cold fluid inlet of the primary heat exchanger (3).
4. An energy saving system according to claim 3, characterized in that: further comprises:
and the outlet end of the resin transfer tank (7) is connected with the water inlet end of the mixed ion exchanger (8).
5. The energy conservation system of claim 1, wherein: further comprises:
a switching controller (16), a temperature sensor (17) and a cooling water control valve (18);
the temperature sensor (17) is arranged at the hot fluid outlet of the three-stage heat exchanger (5), the temperature sensor (17) is electrically connected with the conversion controller (16), the cooling water control valve (18) is arranged between the cold fluid inlet of the three-stage heat exchanger (5) and the water outlet end of the circulating cooling water system (14), and the cooling water control valve (18) is electrically connected with the conversion controller (16).
6. The energy conservation system of claim 5, wherein: also comprises;
a three-way valve (19) and a recirculation line (15);
the inlet end of the three-way valve (19) is connected with the hot fluid outlet of the three-stage heat exchanger (5), the first outlet end of the three-way valve (19) is connected with the inlet end of the iron removal filter (6), the second outlet end of the three-way valve (19) is connected with the recycling pipeline (15), the recycling pipeline (15) is connected with the inlet end of the condensate water recovery tank (1), and the three-way valve (19) is electrically connected with the conversion controller (16).
7. The energy conservation system of claim 1, wherein: the condensed water booster pumps (2) are provided with two groups and are connected in parallel.
8. The energy conservation system of claim 1, wherein: the demineralized water pumps (11) are at least provided with three groups and are connected in parallel.
9. The energy conservation system of claim 1, wherein: the iron removing filters (6) are at least provided with three groups and are connected in parallel.
10. The energy conservation system of claim 1, wherein: the mixed ion exchangers (8) are provided with at least three groups and are connected in parallel with each other.
CN202311066768.4A 2023-08-23 2023-08-23 Energy-saving system Pending CN117142686A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311066768.4A CN117142686A (en) 2023-08-23 2023-08-23 Energy-saving system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311066768.4A CN117142686A (en) 2023-08-23 2023-08-23 Energy-saving system

Publications (1)

Publication Number Publication Date
CN117142686A true CN117142686A (en) 2023-12-01

Family

ID=88885941

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311066768.4A Pending CN117142686A (en) 2023-08-23 2023-08-23 Energy-saving system

Country Status (1)

Country Link
CN (1) CN117142686A (en)

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