CN110282809A - A kind of system and method for producing boiler demineralized water using recirculated water - Google Patents
A kind of system and method for producing boiler demineralized water using recirculated water Download PDFInfo
- Publication number
- CN110282809A CN110282809A CN201910696444.6A CN201910696444A CN110282809A CN 110282809 A CN110282809 A CN 110282809A CN 201910696444 A CN201910696444 A CN 201910696444A CN 110282809 A CN110282809 A CN 110282809A
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- water
- heater
- temperature
- recirculated
- outlet
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Classifications
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- 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
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
A kind of system and method for producing boiler demineralized water using recirculated water provided by the invention, including water source, heater, counter-infiltration system, ion-exchanger and sweet-water tank, wherein, the entrance of the outlet connection heater at water source, the entrance of the outlet connection counter-infiltration system of heater, the outlet of counter-infiltration system connects the entrance of sweet-water tank by ion-exchanger；The circulation for adjusting the water temperature entered in counter-infiltration system is provided in connecting pipe between the outlet of heater and the entrance of counter-infiltration system；The present invention makes full use of the waste heat of recirculated water, reduces the steam consumption of heater, and especially in the season of weather cold, steam consumption reduction effect is more obvious.
Description
Technical field
The present invention relates to thermal power plant's water treatment fields, and in particular to a kind of system for producing boiler demineralized water using recirculated water
And method.
Background technique
In recent years, under ascendant trend, wind-powered electricity generation rapid development, but thermal power generation share is integrally presented year after year in power industry
Drop, the policy of " above pressing greatly small " shut down a collection of Pump for Medium and Small Power Generating Set successively, and Large-scale machine set generated energy falls sharply, the operation of part power plant
It encounters difficulties.In this context, power plant starts to open up neighboring markets, increases steam supply and heat supply.Power plant's steam supply way is usually logical
Steam is supplied user by piping, does not recycle condensed water, therefore when evaporation capacity for engine increases, the chemical workshop rate of water make-up of boiler also with
Increase.
The process of boiler replenishing water (demineralized water water) be usually unboiled water → raw water heater (steam heating) → raw water tank →
More medium filter → cartridge filter (or active carbon filter) → reverse osmosis deaslination → carbon dioxide cleaner → intermediate pool → ion
Exchange.If water source is Canal-water or middle water, it may be necessary to pre- place of being flocculated before entering raw water tank, filter, precipitate etc.
Process is managed, the indexs such as turbidity, the COD of water are reduced.The best inflow temperature of counter-infiltration system is 25 DEG C, will be given birth to by raw water heater
Water is heated to 25 DEG C.The heat source that raw water heater uses is steam, is confessed by power plant steam turbine.When the temperature of the surroundings is low, raw
Water heater needs heat water supply using more steam, and when especially unit evaporation capacity for engine is larger, the usage amount of steam is very
Greatly, influence the economic benefit of power plant (according to from different places, steam price is generally at 160-220 yuan/ton).Therefore, seek one kind
The demineralized water process for preparing water for saving heating steam is that extremely have realistic meaning, and the steam of saving can be brought more for power plant
Economic benefit.
Summary of the invention
The purpose of the present invention is to provide a kind of system and method for producing boiler demineralized water using recirculated water, solve existing
Steam is largely heated in boiler replenishing water requirements of process in some power plant's steam-supplying systems, causes cost excessively high.
In order to achieve the above object, the technical solution adopted by the present invention is that:
A kind of system for producing boiler demineralized water using recirculated water provided by the invention, including it is water source, heater, reverse osmosis
System, ion-exchanger and sweet-water tank, wherein the entrance of the outlet connection heater at water source, the outlet connection of heater are anti-
The entrance of osmosis system, the outlet of counter-infiltration system connect the entrance of sweet-water tank by ion-exchanger；
It is provided in connecting pipe between the outlet of heater and the entrance of counter-infiltration system and enters reverse osmosis for adjusting
The circulation of water temperature in permeable system.
Preferably, the first temperature sensor and first electronic is disposed on the interface channel between water source and heater
Flow control valve.
Preferably, the exit of heater is provided with second temperature sensor.
Preferably, the inlet of counter-infiltration system is provided with third temperature sensor.
Preferably, the circulation includes cooling tower, is provided on the recirculated water water return pipeline on the cooling tower
Circulating water outlet, the connecting pipe connection between the outlet of the circulating water outlet and heater and the entrance of counter-infiltration system.
Preferably, the 4th temperature sensor and the second electric flow are disposed on the recirculated water backwater outlet pipeline
Regulating valve.
Preferably, water pump is additionally provided on the recirculated water backwater outlet pipeline.
A method of boiler demineralized water being produced using recirculated water, boiler is produced based on a kind of utilization recirculated water and is removed
The system of salt water, comprising the following steps:
When the temperature of the water in water source exit is higher than 25 DEG C, heater and circulation, the water of water source outlet are closed
Successively pass through heater, pretreatment and more medium filter counter-infiltration system on earth；
When the temperature of the water in water source exit is lower than 25 DEG C, and the circulating water temperature at circulation is higher than 25 DEG C,
Heater is closed, circulation is opened, the water of water source outlet is mixed with recirculated water, makes the temperature of the water entered in counter-infiltration system
Degree is 25 DEG C；
When the temperature of the temperature of the water in water source exit and recirculated water is below 25 DEG C, heater and circulating water
System, water temperature after heater heats and mix with recirculated water, makes 25 DEG C of temperature of the water into counter-infiltration system.
Compared with prior art, the beneficial effects of the present invention are:
A kind of system for producing boiler demineralized water using recirculated water provided by the invention is in existing chemical water system
Increase circulation, produce demineralized water using recirculated water, make full use of the temperature of recirculated water, reaches winter saving demineralized water
Heat the purpose of steam consumption quantity；The present invention makes full use of the waste heat of recirculated water, the steam consumption of heater is reduced, especially in day
The season of gas cold, steam consumption reduction effect are more obvious；Maximum equipment reuses, and utilizes the filtering in original system
Device, reverse osmosis membrane etc. carry out processing cycle water, make up to desalination water quality standard, and investment cost performance is high；The present invention is in water source temperature
A large amount of heater steam dosage can be saved when lower, and there is utilization rate of waste heat height, original equipment utilization rate height, investment payback time
The short, advantages such as operating cost is low.
Further, the reasons why dry point of recirculated water is arranged on recirculated water water return pipeline, chooses in this way is recirculated water
The water temperature highest of water return pipeline can farthest utilize waste heat, reduce the steam consumption of heater.
A kind of method for producing boiler demineralized water using recirculated water provided by the invention, according to water source and recirculated water return water
Temperature adjusts respective flow, and mixed water temperature is the best inflow temperature of counter-infiltration system at 25 DEG C or so；The present invention
The waste heat for making full use of recirculated water reduces the steam consumption of heater, especially in the season of weather cold, steam consumption saving
Effect is more obvious；Maximum equipment reuses, using filter, reverse osmosis membrane in original system etc. come processing cycle water,
Desalination water quality standard is made up to, investment cost performance is high；The present invention can save a large amount of heater when water source temperature is lower
Steam consumption has the advantages that utilization rate of waste heat is high, original equipment utilization rate is high, the investment payback time is short, operating cost is low etc..
Detailed description of the invention
Fig. 1 is the structural schematic diagram the present invention relates to system.
Specific embodiment
With reference to the accompanying drawing, the present invention is described in more detail.
As shown in Figure 1, a kind of system for producing boiler demineralized water using recirculated water provided by the invention, including water source 1,
One temperature sensor 2, the first electric flow control valve 3, heater 4, second temperature sensor 5, pretreatment 6, multi-medium filtering
Device 7, third temperature sensor 8, counter-infiltration system 9, ion-exchanger 10, sweet-water tank 11, cooling tower 12, the 4th temperature sensing
Device 13, water pump 14 and the first electric flow control valve 15, wherein the entrance of the outlet connection heater 4 at water source 1, heater 4
Outlet connection pretreatment 6 entrance, pre-process 6 outlet connection more medium filter 7 entrance, more medium filter 7
The entrance of outlet connection counter-infiltration system 9, the entrance of the outlet connection ion-exchanger 10 of counter-infiltration system 9, ion-exchanger
The entrance of 10 outlet connection sweet-water tank 11, the entrance of the outlet connection boiler of sweet-water tank 11.
It is provided on interface channel between pretreatment 6 and more medium filter 7 and enters more medium filter 7 for adjusting
The circulation of interior water temperature.
The circulation includes cooling tower 12, is provided with circulation on the recirculated water water return pipeline on the cooling tower 12
Water out, the interface channel between the circulating water outlet and pretreatment 6 and more medium filter 7 connect.
The first temperature sensor 2 and the first electric flow are disposed on interface channel between water source 1 and heater 4
Regulating valve 3.
Second temperature sensor 5 is provided between heater 4 and pretreatment 6.
Third temperature sensor 8 is provided in connecting pipe between more medium filter 7 and counter-infiltration system 9.
The 4th temperature sensor is disposed in connecting pipe between recirculated water water return pipeline and more medium filter 7
13, water pump 14 and the second electric flow control valve 15.
The working principle of the invention is:
The present invention provides a kind of technical solution that boiler demineralized water is produced using recirculated water, new in original chemical water system
Increase water pump, electric flow control valve, temperature sensor, and corresponding valve and pipeline.
Core of the invention point is to produce demineralized water using recirculated water, makes full use of the temperature of recirculated water, reaches winter
Save the purpose of demineralized water heating steam consumption quantity.
Specifically: being that respective flow is adjusted according to the temperature of water source and recirculated water return water, to reach counter-infiltration system
25 DEG C of best inflow temperature of optimum temperature.
The reasons why dry point of recirculated water is arranged on recirculated water water return pipeline, chooses in this way is recirculated water water return pipeline
Water temperature highest can farthest utilize waste heat, reduce the steam consumption of heater.
Recirculated water is pumped into demineralized water water manufacturing system by water pump, is pumped into after being a little selected in heater and pretreatment, fine filtrator
(usually multimedium or active carbon filter) before, reason are recirculated water by concentration (concentration rate is usually 2-5), firmly
The indexs such as degree, salt content, COD increase severely, it is necessary to by the filtering of fine filtrator, otherwise adverse effect can be caused to reverse osmosis membrane,
Shorten the service life of film.
Workflow of the invention is:
When the temperature of the water in 1 exit of water source is higher than 25 DEG C, this system is without starting, because water source water temperature has reached instead
Infiltration water inlet requires, and heater 4 is not without using consuming steam.
When the temperature of the water in 1 exit of water source is lower than 25 DEG C, and the circulating water temperature at cooling tower 12 is higher than 25 DEG C, beat
Water pump 13 is opened, the higher recirculated water of temperature is extracted from circulation；According to the water temperature at water source and recirculated water, pass through first
Electric flow control valve 3 and the second electric flow control valve 15 adjust the water of the water intaking of water source 1 and circulation respectively, make
Temperature is 25 DEG C after mixing, and heater 4 is not still without using consuming steam.
When the temperature of water in 1 exit of water source and the temperature of recirculated water are below 25 DEG C, heater 4 is opened, according to adding
The water temperature and circulating water temperature heated after hot device 4 adjusts the water of the water intaking of circulation by the second electric flow control valve 15
Amount makes 25 DEG C of mixed water temperature, consumes some vapor.
When circulating ratio increases, circulating water quality is deteriorated, and need to monitor situation according to circulating water quality and adjust reverse osmosis in time
Acid and antisludging agent dosage before permeable system, avoid reverse osmosis membrane assembly contaminated.
The present invention has the advantage that compared with existing desalting water treatment technology
1. making full use of the waste heat of recirculated water, the steam consumption of heater is reduced, especially in the season of weather cold, is steamed
Vapour dosage reduction effect is more obvious.
2. maximum equipment reuses, using filter, reverse osmosis membrane in original system etc. come processing cycle water, it is allowed to
Reach desalination water quality standard, investment cost performance is high.
Water intaking can reduce circulating ratio from circulation, and recirculated water reduces the adverse effects such as the corrosion of equipment, rise
It arrived protection equipment, extended equipment overhaul cycle.
The present invention provides a kind of method and system that boiler demineralized water is produced using high temperature circulation water, and at water source, temperature is lower
When can save a large amount of heater steam dosage, have that utilization rate of waste heat is high, original equipment utilization rate is high, the investment payback time is short, fortune
The advantages such as row expense is low.
Claims (8)
1. a kind of system for producing boiler demineralized water using recirculated water, which is characterized in that including water source (1), heater (4), anti-
Osmosis system (9), ion-exchanger (10) and sweet-water tank (11), wherein outlet connection heater (4) of water source (1) enters
Mouthful, the entrance of outlet connection counter-infiltration system (9) of heater (4), the outlet of counter-infiltration system (9) passes through ion-exchanger
(10) entrance of sweet-water tank (11) is connected；
It is provided in connecting pipe between the outlet of heater (4) and the entrance of counter-infiltration system (9) and enters instead for adjusting
The circulation of water temperature in osmosis system (9).
2. a kind of system for producing boiler demineralized water using recirculated water according to claim 1, which is characterized in that water source
(1) the first temperature sensor (2) and the first electric flow control valve are disposed on the interface channel between heater (4)
(3)。
3. a kind of system for producing boiler demineralized water using recirculated water according to claim 1, which is characterized in that heater
(4) exit is provided with second temperature sensor (5).
4. a kind of system for producing boiler demineralized water using recirculated water according to claim 1, which is characterized in that reverse osmosis
The inlet of system (9) is provided with third temperature sensor (8).
5. a kind of system for producing boiler demineralized water using recirculated water according to claim 1, which is characterized in that described to follow
Ring water system includes cooling tower (12), is provided with circulating water outlet on the recirculated water water return pipeline on the cooling tower (12), institute
The connecting pipe stated between circulating water outlet and the outlet of heater (4) and the entrance of counter-infiltration system (9) is connect.
6. a kind of system for producing boiler demineralized water using recirculated water according to claim 5, which is characterized in that described to follow
The 4th temperature sensor (13) and the second electric flow control valve (15) are disposed on ring water backwater outlet pipeline.
7. a kind of system for producing boiler demineralized water using recirculated water according to claim 5, which is characterized in that described to follow
Water pump (14) are additionally provided on ring water backwater outlet pipeline.
8. a kind of method for producing boiler demineralized water using recirculated water, which is characterized in that based on any one of claim 1-7 institute
A kind of system for producing boiler demineralized water using recirculated water stated, comprising the following steps:
When the temperature of the water in water source (1) exit is higher than 25 DEG C, heater (4) and circulation, water source (1) outlet are closed
Water be passed through counter-infiltration system (9) by heater (4)；
When the temperature of the water in water source (1) exit is lower than 25 DEG C, and the circulating water temperature at circulation is higher than 25 DEG C, close
It closes heater (4), opens circulation, the water of water source (1) outlet is mixed with recirculated water, makes to enter in counter-infiltration system (9)
Water temperature be 25 DEG C；
When the temperature of water in water source (1) exit and the temperature of recirculated water are below 25 DEG C, heater (4) and recirculated water
System, water temperature after heater (4) heating and mix with recirculated water, makes the temperature of the water into counter-infiltration system (9)
It is 25 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910696444.6A CN110282809A (en) | 2019-07-30 | 2019-07-30 | A kind of system and method for producing boiler demineralized water using recirculated water |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910696444.6A CN110282809A (en) | 2019-07-30 | 2019-07-30 | A kind of system and method for producing boiler demineralized water using recirculated water |
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| CN110282809A true CN110282809A (en) | 2019-09-27 |
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| CN201910696444.6A Pending CN110282809A (en) | 2019-07-30 | 2019-07-30 | A kind of system and method for producing boiler demineralized water using recirculated water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111998720A (en) * | 2020-08-06 | 2020-11-27 | 浙江华川实业集团有限公司 | Low-grade energy utilization process |
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