CN106241924A - A kind of power plant's desalinization processing means and method - Google Patents
A kind of power plant's desalinization processing means and method Download PDFInfo
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- CN106241924A CN106241924A CN201610804925.0A CN201610804925A CN106241924A CN 106241924 A CN106241924 A CN 106241924A CN 201610804925 A CN201610804925 A CN 201610804925A CN 106241924 A CN106241924 A CN 106241924A
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- water
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- power plant
- regulating reservoir
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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
- 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
-
- 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
- C02F1/08—Thin film evaporation
-
- 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
- C02F2103/08—Seawater, e.g. for desalination
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
-
- 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
Abstract
The present invention relates to a kind of power plant's desalinization processing means and method, belong to energy-conserving and environment-protective field.A kind of power plant desalinization processing means, including: pretreatment unit；Preheater, is provided with seawater pipeline A in it, connect pretreatment unit and regulating reservoir by described seawater pipeline A, and exhaust steam simultaneously is passed through inside described preheater；Regulating reservoir, is internally provided with heat exchanger, and the outlet of described regulating reservoir is sequentially connected with primary heater, secondary heater and three grades of heaters through seawater pipeline B；Intermediate pool, it connects the outlet of described seawater pipeline B；Distillation device, its water inlet connects the outlet of described intermediate pool, and the outlet of described distillation device connects the water inlet of described regulating reservoir, and the product mouth of a river of described distillation device connects produces pond.The present invention utilizes exhaust steam that sea water carries out membrance concentration process process, and the thermal efficiency being simultaneously advantageously implemented whole power plant maximizes.
Description
Technical field
The present invention relates to a kind of power plant's desalinization processing means and method, belong to energy-conserving and environment-protective field.
Background technology
In energy resource supply, critical role is occupied at China's coal fired power generation.In order to just ensure generating efficiency and generating equipment
Often run, coal-burning power plant typically requires use substantial amounts of recirculated cooling water exhaust steam in steam turbine is cooled down, waving by water
Sending out brings in air by the heat in exhaust steam, and this not only wastes substantial amounts of heat, consumes the water resource of up to ten thousand tons every day simultaneously, because of
How this, recycle the heat in exhaust steam, always energy-saving field priority research areas.
Membrane Materials (MD) technology is a kind of efficient membrane separation technique, is by controlling wastewater temperature, with hydrophobic micropore
Film is separating medium, with film both sides steam pressure difference as mass transfer force, it is achieved the process that Waste water concentrating and pure water reclaim, MD technology
Compared with conventional film isolation technics, there is many merits, as salt is retained ultrahigh in efficiency, to most nonvolatile matters
Have nearly 100% and retain efficiency, and influent quality is required low, operating condition is gentle (need not high pressure equipment), run dimension
Protect conveniently, fouling membrane is less likely to occur and the evaporation of observable index tradition is low etc..Additionally, salinity change in waste water is adapted to by Membrane Materials
Property strong, as long as solute unsaturation separates out in theory, membrane module can be properly functioning.Therefore, membrane distillation technique is used to carry out sea
Water desalination is paid attention to by a lot of scholars.Owing to Membrane Materials needs to heat former water, therefore energy consumption is of a relatively high, and this is also
Limit one of key factor of MD technique large-scale application.
Therefore, in today that the energy and water resource day are becoming tight, even avoid using in a large number recirculated water to reduce, simultaneously
Reclaiming the energy, the efficient energy recovery of exploiting economy and desalination process are significant.
Summary of the invention
For solving the problems referred to above, it is an object of the invention to provide a kind of power plant's desalinization processing means and method.
It is an object of the invention to be achieved through the following technical solutions:
A kind of power plant desalinization processing means, including:
Pretreatment unit, for carrying out pretreatment to sea water；
Preheater, is provided with seawater pipeline A in it, connected outlet and the tune of pretreatment unit by described seawater pipeline A
The water inlet in joint pond, exhaust steam simultaneously is passed through inside described preheater；
Regulating reservoir, is internally provided with heat exchanger, and the outlet of described regulating reservoir is sequentially connected with one-level heating through seawater pipeline B
Device, secondary heater and three grades of heaters, wherein, described seawater pipeline B sequentially passes through primary heater, secondary heater and three
Level heater；
Intermediate pool, the water inlet of described intermediate pool connects after primary heater, secondary heater and three grades of heaters
Connect the outlet of described seawater pipeline B；
Distillation device, the water inlet of described distillation device connects the outlet of described intermediate pool, described Membrane Materials
The outlet of device connects the water inlet of described regulating reservoir, and the product mouth of a river of described distillation device connects produces pond.
Further, the top of described primary heater, secondary heater and three grades of heaters is respectively equipped with and adds vapours
Entrance, the bottom of described primary heater, secondary heater and three grades of heaters is respectively equipped with condensation-water drain.
Further, the condensation-water drain of described three grades of heaters connects the water inlet of secondary heater, and described two grades add
The condensation-water drain of hot device connects the water inlet of primary heater, and the condensation-water drain of described primary heater connects described heat exchange
The water inlet of device, the outlet of described heat exchanger connects boiler.
Further, described pretreatment unit is sedimentation tank, oil interceptor, oxidation pond, softening pond, filter, biochemistry pool
The associating of one or more.
Further, described pretreatment unit connects seawater pipeline A through water pump A；
The outlet of described regulating reservoir connects seawater pipeline B through water pump B；
The outlet of described distillation device connects the water inlet of regulating reservoir through water pump C, and the sea water of intermediate pool is at water pump C
Swabbing action under sequentially entered distillation device and water pump C by intermediate pool, the sea water after distillation device concentration is again
Be back in regulating reservoir under the swabbing action of water pump C, the now setting of water pump C take for suction-type water intake mode；Or water
Pump C is arranged between the outlet of intermediate pool and the water inlet of junctional membrane distilling apparatus, and what the now setting of water pump C was taked is
Pressure type water intake mode.
Further, described distillation device uses the vacuum membrane distillation method of operation, the gap field orientation method of operation, gas
Sweep the combination of one or more of the formula Membrane Materials method of operation, the direct contact membrane distillation method of operation.
A kind of processing method utilizing described power plant's desalinization processing means to carry out power plant's desalinization, including following
Step:
Step 1, after sea water preprocessed device pretreatment, enters the seawater pipeline A in preheater, steamer by water pump A
Exhaust steam after machine generating is passed through preheater for the sea water in heating seawater pipeline A, and sea water enters after being heated to 30～55 DEG C
Regulating reservoir；
Step 2, the sea water in described regulating reservoir sequentially enters primary heater, secondary heater and three grades through water pump B and adds
Hot device enters intermediate pool after being heated to 60～98 DEG C；
Step 3, the sea water of intermediate pool sequentially enters distillation device and water pump C, simultaneously under the swabbing action of water pump C
Concentration is carried out in distillation device 11；Use this kind of suction-type water intake mode, advantageously reduce the sea water in membrane module
Pressure, it is to avoid hydrophobic membrane penetrates, can increase film both sides steam pressure difference under equal operating condition simultaneously, is conducive to improving
The permeant flux of film.
Step 4, the sea water after distillation device concentration is back to regulating reservoir again under the swabbing action of water pump C
In, the condensed water that distillation device produces is collected by producing pond, repeats concentration process；When the sea water in distillation device
When salinity reaches the concentration of emission set, the sea water in distillation device is discharged.
Described pretreatment be chemistry sink to the bottom, chemical oxidation, carry out a biological disposal upon, filter or adsorb one or more.
The processing method of described power plant's desalinization is applicable to the various fired power generating unit such as water-cooled, air cooling.
The invention have the benefit that
The present invention utilizes exhaust steam to preheat sea water, uses step heating system simultaneously, is possible not only to reduce recirculated water
Consumption, reclaims heat energy, can reduce the consumption to high-quality steam as far as possible simultaneously, reduces the shadow to steam turbine power generation efficiency
Ringing, the thermal efficiency being thus advantageous to realize whole power plant maximizes.
Accompanying drawing explanation
Fig. 1 is the structural representation of power plant of the present invention desalinization processing means；
Wherein, 1-pretreatment unit, 2-water pump A, 3-preheater, 4-regulating reservoir, 5-heat exchanger, 6-water pump B, 7-one-level adds
Hot device, 8-secondary heater, tri-grades of heaters of 9-, 10-intermediate pool, 11-distillation device, 12-water pump C, 13-produce pond.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, not
For limiting the present invention.
A kind of power plant desalinization processing means, including:
Pretreatment unit 1, for carrying out pretreatment to sea water；
Preheater 3, is provided with seawater pipeline A in it, by described seawater pipeline A connect pretreatment unit 1 outlet and
The water inlet of regulating reservoir 4, it is internal that exhaust steam simultaneously is passed through described preheater 3；
Regulating reservoir 4, is internally provided with heat exchanger 5, and the outlet of described regulating reservoir 4 is sequentially connected with one-level through seawater pipeline B
Heater 7, secondary heater 8 and three grades of heaters 9, wherein, described seawater pipeline B sequentially passes through primary heater 7, two grades and adds
Hot device 8 and three grades of heaters 9；
Intermediate pool 10, the water inlet of described intermediate pool 10 is in primary heater 7, secondary heater 8 and three grades of heating
The outlet of described seawater pipeline B is connected after device 9；
Distillation device 11, the water inlet of described distillation device 11 connects the outlet of described intermediate pool 10, described
The outlet of distillation device 11 connects the water inlet of described regulating reservoir 4, and the product mouth of a river of described distillation device 11 connects produces water
Pond 13.
The top of described primary heater 7, secondary heater 8 and three grades of heaters 9 is respectively equipped with heating steam inlet, institute
The bottom stating primary heater 7, secondary heater 8 and three grades of heaters 9 is respectively equipped with condensation-water drain.
The condensation-water drain of described three grades of heaters 9 connects the water inlet of secondary heater 8, described secondary heater 8
Condensation-water drain connects the water inlet of primary heater 7, and the condensation-water drain of described primary heater 7 connects described heat exchanger 5
Water inlet, the outlet of described heat exchanger 5 connects boiler.
Described pretreatment unit 1 is sedimentation tank, oil interceptor, oxidation pond, softening pond, filter, the one of biochemistry pool or several
The associating planted.
Described pretreatment unit 1 connects seawater pipeline A through water pump A2；
The outlet of described regulating reservoir 4 connects seawater pipeline B through water pump B6；
The outlet of described distillation device 11 connects the water inlet of regulating reservoir 4 through water pump C12.
Described distillation device 11 uses the vacuum membrane distillation method of operation, the gap field orientation method of operation, gas to sweep formula film
The distillation method of operation, the combination of one or more of the direct contact membrane distillation method of operation.
With certain coastal coal-burning power plant, with sea water for processing object, process dress by power plant of the present invention desalinization
Put and carry out desalinization process, comprise the following steps:
Step 1, sea water through coagulating sedimentation, soften, after the pretreatment such as filtration, enter the sea in preheater 3 by water pump A2
Waterpipe A, the exhaust steam part after steam turbine power generation is condensed by the recirculated water in condenser, and another part exhaust steam is passed through
Preheater 3 is used for the sea water in heating seawater pipeline A, and the condensed water that exhaust steam condensation produces is back to use boiler after suitably processing
In, sea water enters regulating reservoir 4 after being heated to 30～55 DEG C；
Step 2, the sea water in described regulating reservoir 4 sequentially enters primary heater 7, secondary heater 8 and three through water pump B6
Level heater 9 enters intermediate pool 10 after being heated to 90 DEG C, and wherein, described primary heater 7, secondary heater 8, three grades add
Hot device 9 steams with No. 8 low-pressure heater inlet steams (about 65 DEG C), No. 7 low-pressure heater entrances of condensed water heat regenerative system respectively
Vapour (about 90 DEG C), No. 6 low-pressure heater inlet steams (106 DEG C) are for adding vapours；The condensed water produced in three grades of heaters 9 returns
Flowing in secondary heater 8, further with waste heat, the condensate return produced in secondary heater 9 is to primary heater 8
In, further with, the condensate return produced in primary heater 8 to heat exchanger 5, further with, to improve whole system
The system thermal efficiency.
Step 3, the sea water of intermediate pool 10 is sequentially entered Membrane Materials by intermediate pool 10 under the swabbing action of water pump C12
Device 11 and water pump C12, carry out concentration in distillation device 11 simultaneously
Step 4, the sea water after distillation device 11 concentration is back to regulation again under the swabbing action of water pump C12
In pond 4, the condensed water that distillation device 11 produces is collected by producing pond 13, is back to the inside and outside production of power plant and life, repeats
Concentration process.When the sea water salinity in distillation device 11 reaches 20%, discharge sea water and processed sea further
Water is desalinated.
In the present invention, it is possible to water pump C12 is arranged on the water inlet end of distillation device 11, i.e. uses pressure type water inlet side
Formula.
The main purpose of described pretreatment is to meet subsequent heat and the inflow requirement of Membrane Materials process, can be that chemistry is heavy
The end, chemical oxidation, carry out a biological disposal upon, filter or adsorb one or more.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, that is made any repaiies
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (8)
1. power plant's desalinization processing means, it is characterised in that including:
Pretreatment unit (1), for carrying out pretreatment to sea water；
Preheater (3), is provided with seawater pipeline A in it, by described seawater pipeline A connect pretreatment unit (1) outlet and
The water inlet of regulating reservoir (4), it is internal that exhaust steam simultaneously is passed through described preheater (3)；
Regulating reservoir (4), is internally provided with heat exchanger (5), and the outlet of described regulating reservoir (4) is sequentially connected with one through seawater pipeline B
Level heater (7), secondary heater (8) and three grades of heaters (9), wherein, described seawater pipeline B sequentially passes through primary heater
(7), secondary heater (8) and three grades of heaters (9)；
Intermediate pool (10), the water inlet of described intermediate pool (10) is primary heater (7), secondary heater (8) and three grades
Heater (9) connects the outlet of described seawater pipeline B afterwards；
Distillation device (11), the water inlet of described distillation device (11) connects the outlet of described intermediate pool (10), institute
The outlet stating distillation device (11) connects the water inlet of described regulating reservoir (4), the product mouth of a river of described distillation device (11)
Connect and produce pond (13).
Power plant the most according to claim 1 desalinization processing means, it is characterised in that described primary heater (7), two
Level heater (8) and the top of three grades of heaters (9) are respectively equipped with heating steam inlet, described primary heater (7), two grades add
The bottom of hot device (8) and three grades of heaters (9) is respectively equipped with condensation-water drain.
Power plant the most according to claim 2 desalinization processing means, it is characterised in that described three grades of heaters (9)
Condensation-water drain connects the water inlet of secondary heater (8), and the condensation-water drain of described secondary heater (8) connects one-level heating
The water inlet of device (7), the condensation-water drain of described primary heater (7) connects the water inlet of described heat exchanger (5), described heat exchange
The outlet of device (5) connects boiler.
Power plant the most according to claim 1 desalinization processing means, it is characterised in that described pretreatment unit (1) is
Sedimentation tank, oil interceptor, oxidation pond, softening pond, filter, the associating of one or more of biochemistry pool.
Power plant the most according to claim 1 desalinization processing means, it is characterised in that
Described pretreatment unit (1) connects seawater pipeline A through water pump A (2)；
The outlet of described regulating reservoir (4) connects seawater pipeline B through water pump B (6)；
The outlet of described distillation device (11) connects water inlet or water pump C (12) setting of regulating reservoir (4) through water pump C (12)
Between the outlet and the water inlet of distillation device (11) of intermediate pool (10).
Power plant the most according to claim 1 desalinization processing means, it is characterised in that described distillation device (11) is adopted
Steam with the vacuum membrane distillation method of operation, the gap field orientation method of operation, the sweep gas membrane disillation method of operation, direct contact type film
Evaporate the combination of one or more of the method for operation.
7. power plant's desalinization processing means that a kind utilizes described in any of the above item claim carries out power plant's desalinization
Processing method, it is characterised in that comprise the following steps:
Step 1, after sea water preprocessed device (1) pretreatment, enters the seawater pipeline A in preheater (3) by water pump A (2),
Exhaust steam after steam turbine power generation is passed through the sea water that preheater (3) is used in heating seawater pipeline A, and sea water is heated to 30～55 DEG C
Rear entrance regulating reservoir (4)；
Step 2, the sea water in described regulating reservoir (4) sequentially enters primary heater (7), secondary heater (8) through water pump B (6)
Intermediate pool (10) is entered after being heated to 60～98 DEG C with three grades of heaters (9)；
Step 3, the sea water of intermediate pool (10) is sequentially entered film by intermediate pool (10) under the swabbing action of water pump C (12) and steams
Distillation unit (11) and water pump C (12), carry out concentration in distillation device (11) simultaneously；
Step 4, the sea water after distillation device (11) concentration is back to regulating reservoir under the swabbing action of water pump C (12)
(4) in, repeating concentration process, the condensed water that distillation device (11) produces is collected by producing pond (13)；Work as Membrane Materials
When sea water salinity in device (11) reaches the concentration of emission set, the sea water in distillation device (11) is discharged.
The processing method of power plant the most according to claim 7 desalinization, it is characterised in that described pretreatment is that chemistry is heavy
The end, chemical oxidation, carry out a biological disposal upon, filter or adsorb one or more.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610804925.0A CN106241924B (en) | 2016-09-06 | 2016-09-06 | A kind of power plant's sea water desalination processing unit and method |
| PCT/CN2017/072020 WO2018045709A1 (en) | 2016-09-06 | 2017-01-22 | Power plant seawater desalination treatment device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610804925.0A CN106241924B (en) | 2016-09-06 | 2016-09-06 | A kind of power plant's sea water desalination processing unit and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106241924A true CN106241924A (en) | 2016-12-21 |
| CN106241924B CN106241924B (en) | 2018-05-04 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610804925.0A Active CN106241924B (en) | 2016-09-06 | 2016-09-06 | A kind of power plant's sea water desalination processing unit and method |
Country Status (2)
| Country | Link |
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| CN (1) | CN106241924B (en) |
| WO (1) | WO2018045709A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107311256A (en) * | 2017-08-01 | 2017-11-03 | 华北电力大学（保定） | A kind of water charging system of coastal waters thermal power plant |
| WO2018045707A1 (en) * | 2016-09-06 | 2018-03-15 | 大唐环境产业集团股份有限公司 | Water treatment device and method using waste heat from power plant |
| WO2018045709A1 (en) * | 2016-09-06 | 2018-03-15 | 大唐环境产业集团股份有限公司 | Power plant seawater desalination treatment device and method |
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| CN106241924B (en) * | 2016-09-06 | 2018-05-04 | 大唐环境产业集团股份有限公司 | A kind of power plant's sea water desalination processing unit and method |
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- 2017-01-22 WO PCT/CN2017/072020 patent/WO2018045709A1/en active Application Filing
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| CN201139961Y (en) * | 2007-10-22 | 2008-10-29 | 天津海之凰科技有限公司 | Energy-saving pressure reduction film distillation equipment |
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| CN107311256A (en) * | 2017-08-01 | 2017-11-03 | 华北电力大学（保定） | A kind of water charging system of coastal waters thermal power plant |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106241924B (en) | 2018-05-04 |
| WO2018045709A1 (en) | 2018-03-15 |
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