CN110282679A - The thermodynamic steam compression vertical tube climbing-film evaporation desalination plant of twin-stage preheating - Google Patents
The thermodynamic steam compression vertical tube climbing-film evaporation desalination plant of twin-stage preheating Download PDFInfo
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- CN110282679A CN110282679A CN201910669841.4A CN201910669841A CN110282679A CN 110282679 A CN110282679 A CN 110282679A CN 201910669841 A CN201910669841 A CN 201910669841A CN 110282679 A CN110282679 A CN 110282679A
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- 238000001704 evaporation Methods 0.000 title claims abstract description 35
- 230000008020 evaporation Effects 0.000 title claims abstract description 33
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 30
- 230000006835 compression Effects 0.000 title claims abstract description 22
- 238000007906 compression Methods 0.000 title claims abstract description 22
- 230000000694 effects Effects 0.000 claims abstract description 159
- 230000009194 climbing Effects 0.000 claims abstract description 107
- 239000013535 sea water Substances 0.000 claims abstract description 68
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 238000011033 desalting Methods 0.000 claims abstract description 7
- 239000013505 freshwater Substances 0.000 claims description 61
- 238000007701 flash-distillation Methods 0.000 claims description 7
- 239000012267 brine Substances 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 6
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 6
- 238000009833 condensation Methods 0.000 claims description 2
- 230000005494 condensation Effects 0.000 claims description 2
- 230000000750 progressive effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 239000007921 spray Substances 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 3
- 239000000284 extract Substances 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 abstract description 2
- 239000010865 sewage Substances 0.000 abstract description 2
- 230000008542 thermal sensitivity Effects 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 114
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000006837 decompression Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010025 steaming Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000011552 falling film Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Classifications
-
- 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
- C02F1/06—Flash 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
-
- 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
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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)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
A kind of thermodynamic steam compression vertical tube climbing-film evaporation desalination plant of twin-stage preheating, belongs to sea water desalination, the concentration of thermal sensitivity feed liquid and technical field of sewage.The desalting plant is respectively imitated vertical tube climbing film evaporator forward feed mode and is connected, two-stage preheater is arranged in head effect vertical tube climbing film evaporator front end, end effect vertical tube climbing film evaporator part secondary steam has been extracted using thermodynamic steam compressor, therefore the thermic load of condenser is reduced, so that condenser heat extraction loss and condenser heat exchange area be made to reduce；Steam is heated as first effect after the secondary steam increasing temperature and pressure that thermodynamic steam compressor extracts simultaneously, the energy loss of direct pressure and temperature reducing is reduced, while reducing working steam flow, increases water generation ratio；Seawater two-stage is preheated using the condensed water and part secondary steam of first effect vertical tube climbing film evaporator, ocean temperature is promoted, reduces the pre- heat of first evaporator, therefore reduce heating steam consumption quantity, also increase water generation ratio.
Description
Technical field
The present invention relates to a kind of thermodynamic steam compression vertical tube climbing-film evaporation desalination plants of twin-stage preheating, belong to
Sea water desalination, the concentration of thermal sensitivity feed liquid and technical field of sewage.
Background technique
The navigation of ship off-lying sea, offshore platform operation on the sea, personnel, equipment need to consume a large amount of fresh water, therefore, large and medium-sized ship
Oceangoing ship/offshore platform is equipped with desalination plant.Way of distillation preparing fresh is still current general offshore platform/ship seawater
The technology that desalting plant generallys use.In three kinds of common types of multi-effect evaporator (vertical tube climbing-film evaporation, vertical tube falling evaporation, cross
Pipe falling film evaporation) in, vertical tube climbing film evaporator has outstanding feature: being best suited in the case of middle and small scale to low-quality waste heat
The utilization of the energy；Ship Swaying, shaking influence less, have sea to the formation of liquid film in vertical tube climbing film evaporator and heat transfer characteristic
It goes on board to resist necessary to the water desalination apparatus of the Taiwan Straits and waves performance；Feeding manner is simple, easily controllable；Structure is simple, manufacture installation
It is required that lower, operation and operation facilitate；Evaporation time is short, and heat transfer efficiency is high, under the conditions of low evaporating temperature, charging seawater with
The Local Condensing Heat Transfer Coefficients of heat exchange surface can reach 6000W/(㎡ K) more than；Due to its lower running temperature, scale formation
Effective control is obtained；It is the evaporator of unit volume network minimal so far.Comprehensively consider the upper of vertical tube climbing film evaporator
Feature is stated, in the case that at sea platform, ship possess a large amount of available fume afterheats and engine cooling water waste heat, it is
Solve the suitable selection of offshore platform/the marine sea water desalination device demand.
French conventional steam power helicopter aircraft carrier " loyal moral " number was just once equipped with three standpipe economic benefits and social benefits and rises film
Evaporating sea water desalting device meets Quan Jianyong water, and device head effect heating steam passes through from waste vapour general pipeline or high steam
Decompression use, gauge pressure 0.1MPa, 280 DEG C of steam exhaust are generally decompressed to 0.045MPa, 78 DEG C of low-pressure saturated steams come using, with
The fouling risk of evaporator is reduced, however decompression process energy loss is bigger, therefore proposes this patent --- twin-stage preheating
Thermodynamic steam compression vertical tube climbing-film evaporation desalination plant.
Vertical tube climbing film evaporator structure in present patent application is based on having authorized patent of invention early period, and a kind of vertical tube is gushed boiling
Rise sea water evaporator (patent No.: ZL201110162485.0), specific unit by lower tube box, upper tube box, steam-generating bank,
Down-comer (being placed in vertical tube climbing film evaporator center), wire mesh demister, steam inlet pipe, fresh water fairlead, sea intake
The composition such as pipe, concentrated seawater fairlead.
Summary of the invention
This patent is intended to provide a kind of steam thermal compression formula vertical tube climbing-film evaporation desalination plant of twin-stage preheating.Needle
Have to the bigger and device water generation ratio of vertical tube climbing-film evaporation desalination plant mesohigh working steam decompression loss and further mentions
The problem of between lift-off, proposes to increase thermodynamic steam compressor (i.e. steam jet ejector) in vertical tube lift film evaporator, to reduce
Directly energy loss caused by working steam pressure and temperature reducing is inhaled using the hot compression principle of steam jet ejector with high steam
The part low-pressure secondary steam for entering last evaporator generation will steam after its adherence pressure and temperature as the heating of first evaporator
Vapour realizes recycling for low-pressure steam, reduces condenser discharge heat loss, improves system thermal efficiency and device water generation ratio.It removes
Outside steam power ship, be equipped with smoke and waste steam boiler using diesel engine, gas turbine as the large and medium-sized ship of power and have
Also have wide application prospects on the offshore platform of steam source.
This patent the technical solution adopted is that: a kind of thermodynamic steam compression vertical tube climbing-film evaporation seawater of twin-stage preheating is light
Makeup is set, desalting plant include vertical tube climbing film evaporator, condenser, charging sea water pump, fresh water pump and strong brine pump, each device it
Between using pipeline connect；Vertical tube climbing film evaporator is cylindrical tube shell heat exchanger, inside sets steam-generating bank, down-comer, concentration sea
Water fairlead and demister；The desalting plant further includes thermodynamic steam compressor, direct-contact desuperheater, level-one preheater, second level
Preheater and fresh water flash tank, multiple-effect vertical tube climbing film evaporator are connected using forward feed mode, head effect vertical tube climbing film evaporator
Two-stage preheater is arranged in front end, is respectively charging seawater with head effect vertical tube climbing film evaporator steam condensate (SC) and part secondary steam
Preheating utilizes effect vertical tube climbing film evaporator headed by the secondary steam of thermodynamic steam compressor suction end effect vertical tube climbing film evaporator part
Heating；The sea of the concentrated seawater fairlead of every effect vertical tube climbing film evaporator lower tube box and next effect vertical tube climbing film evaporator lower tube box
Water inlet pipe is connected, and successively forward feed connects, until end effect vertical tube climbing film evaporator concentrated seawater is by concentrated seawater fairlead
Lead to strong brine pump discharger；Head effect vertical tube climbing film evaporator upper tube box sets two steam (vapor) outlets, a steam (vapor) outlet and two
Grade preheater is connected, another steam (vapor) outlet is connected with the heating steam inlet of next effect vertical tube climbing film evaporator shell side.
Centre effect vertical tube climbing film evaporator upper tube box sets a steam (vapor) outlet, with next effect vertical tube climbing film evaporator shell side
Heating steam inlet is connected；End effect vertical tube climbing film evaporator upper tube box sets 2 steam (vapor) outlets, a steam (vapor) outlet and thermodynamic steam
Compressor sucks chamber inlet and is connected, another steam (vapor) outlet is connected with condenser.
The level-one preheater is connected by seawater conveying pipe with the seawer outlet of condenser, connect level-one preheater and
The seawater conveying pipe of condenser uses tee tube, and only part charging seawater enters level-one preheater, remaining is as cooling sea
Water discharge, level-one preheater hot fluid inlet are connected with the condensation-water drain of first effect vertical tube climbing film evaporator shell side；The second level
The charging seawater inlet of preheater is connected with the seawer outlet of level-one preheater, thermal fluid inlet and first effect vertical tube climbing-film evaporation
The Preheated steam outlet of device upper tube box is connected, the seawer outlet of second level preheater and first effect vertical tube climbing film evaporator lower tube box into
Expect that seawater inlet is connected.
The main jet of the thermodynamic steam compressor uses Laval-cavity nozzle, and sucking chamber inlet and end effect vertical tube rise film
The secondary steam outlet of evaporator is connected, thermodynamic steam compressor mixed vapour outlet setting direct-contact desuperheater, direct-contact desuperheater
Desuperheat water inlet be connected with the condensed water fairlead of first effect vertical tube climbing film evaporator, vertical tube liter is imitated with first in direct-contact desuperheater outlet
The heating steam inlet of film evaporator shell side is connected.
The second level preheater condensation-water drain, the second effect vertical tube climbing film evaporator condensation-water drain imitate fresh water with two respectively
2 fresh water entrances of flash tank connect, two effect fresh water flash tank flash distillation vapor outlets and next effect vertical tube climbing film evaporator shell side vapour
The connection of side space, two effect fresh water flash tank water outlets and next effect fresh water flash tank fresh water entrance are connected with fresh water conveying pipe
It connects；Next effect fresh water flash tank presses identical connection type by progressive connection is imitated, until end effect fresh water flash tank；The flash distillation of end effect fresh water
Tank flash distillation vapor outlet is connect with tail end condenser vapour side space, and end effect fresh water flash tank water outlet and condenser condense water out
It is connect using three-way pipeline with fresh water pump.
When realizing each effect vertical tube climbing film evaporator forward feed, set in every effect vertical tube climbing film evaporator down-comer exit
The concentrated seawater fairlead that structure is right-angle elbow pipe is set, elbow part protrudes into down-comer lower end a distance vertically upward, receives
The concentrated seawater to converge through down-comer.
The vertical tube climbing film evaporator basic configuration is triple effect, is adjusted to two effects or quadruple effect according to Water l oad demand is made.
The beneficial effects of the present invention are: it is secondary to have extracted end effect vertical tube climbing film evaporator part using thermodynamic steam compressor
Steam, therefore the thermic load of condenser is reduced, so that condenser heat extraction loss and condenser heat exchange area be made to reduce；Simultaneously
Steam is heated as first effect after the secondary steam increasing temperature and pressure that thermodynamic steam compressor extracts, reduces the energy of direct pressure and temperature reducing
Amount loss, while working steam flow is reduced, increase water generation ratio；Condensed water and portion using first effect vertical tube climbing film evaporator
Steam preheats seawater two-stage in two times, promotes ocean temperature, reduces the pre- heat of first evaporator, therefore reduce heating
Steam consumption quantity also increases water generation ratio.
Detailed description of the invention
Fig. 1 is the thermodynamic steam compression triple effect vertical tube climbing-film evaporation desalination plant figure of twin-stage preheating.
Fig. 2 is that the thermodynamic steam compression two of twin-stage preheating imitates vertical tube climbing-film evaporation desalination plant figure.
Fig. 3 is the thermodynamic steam compression quadruple effect vertical tube climbing-film evaporation desalination plant figure of twin-stage preheating.
In figure: 1, the first effect vertical tube climbing film evaporator, the 2, second effect vertical tube climbing film evaporator, 3, third effect vertical tube liter film steaming
Send out device, 4, direct-contact desuperheater, 5, thermodynamic steam compressor, 6, charging sea water pump, 7, condenser, 8, level-one preheater, 9, second level
Preheater, 10, two effect fresh water flash tanks, 11, triple effect fresh water flash tank, 12, fresh water pump, 13, strong brine pump, 14, steam-generating bank,
15, down-comer, 16, concentrated seawater fairlead, 17, demister, 18, quadruple effect fresh water flash tank, 19, quadruple effect vertical tube climbing-film evaporation
Device.
Specific embodiment
Below in conjunction with attached drawing of the invention, technical solution in the embodiment of the present invention progress clearly, is completely retouched
It states.
The evaporator of the thermodynamic steam compression vertical tube climbing-film evaporation desalination plant of twin-stage preheating proposed by the present invention
Basic configuration is triple effect, can be adjusted to two effects or quadruple effect according to Water l oad demand is made.Because vertical tube climbing film evaporator is at 5-15 DEG C
There is preferable heat transfer stability, therefore in multiple-effect vertical tube climbing-film evaporation seawater desalination system under heat transfer temperature difference, the temperature difference between effect
Not preferably less than 5 DEG C, simultaneously because there are preheating sections for first effect vertical tube climbing film evaporator, it is pre- good antiscale property that head effect temperature difference accounting is larger,
Under the limitation of salt water top temperature, the thermodynamic steam compression vertical tube climbing-film evaporation desalination plant vertical tube of twin-stage preheating rises film and steams
Hair device effect number should not be higher than quadruple effect；Due to the process design of twin-stage preheating, the most inefficient number of vertical tube climbing film evaporator is two effects.
Fig. 1 shows a kind of thermodynamic steam compression triple effect vertical tube climbing-film evaporation desalination plant figure of twin-stage preheating.
The triple effect vertical tube climbing-film evaporation desalination plant includes that the first effect vertical tube climbing film evaporator 1, second imitates vertical tube liter
Film evaporator 2, third effect vertical tube climbing film evaporator 3, direct-contact desuperheater 4, thermodynamic steam compressor 5, condenser 7, level-one preheating
Device 8, second level preheater 9, two imitate fresh water flash tank 10, triple effect fresh water flash tank 11, are aided with charging sea water pump 6,12 and of fresh water pump
Concentrated seawater pumps 13, is connected between each device using pipeline.Each vertical tube climbing film evaporator is cylindrical tube shell heat exchanger, internal
Mainly set steam-generating bank 14, down-comer 15, concentrated seawater fairlead 16 and demister 17.According to basic configuration, the first effect vertical tube
Climbing film evaporator 1, second imitates vertical tube climbing film evaporator 2, third effect vertical tube climbing film evaporator 3 is connected using forward feed mode,
To avoid inlet and outlet seawater that flowing short circuit occurs in vertical tube climbing film evaporator lower tube box, decline hereby in vertical tube climbing film evaporator
Concentrated seawater fairlead 16 is arranged in 15 exit of pipe, and structure is right-angle elbow pipe, and elbow part protrudes into down-comer 15 vertically upward
Lower end a distance receives the concentrated seawater to converge through down-comer 15.It designs, is set in the first effect vertical tube climbing film evaporator 1 according to this
The seawater of the concentrated seawater fairlead 16 that down-comer 15 exports in lower tube box and the second effect 2 lower tube box of vertical tube climbing film evaporator enters
Mouth pipe is connected, and the concentrated seawater fairlead and third of the second effect 2 lower tube box of vertical tube climbing film evaporator are imitated under vertical tube climbing film evaporator 3
The seawater inlet pipe of bobbin carriage is connected, and realizes that charging seawater flows automatically step by step under the action of each effect pressure difference, concentrated seawater is perpendicular in end effect
Pipe climbing film evaporator, that is, basic configuration third imitates vertical tube climbing film evaporator 3 and leads to strong brine 13 rows of pump by concentrated seawater fairlead
Device out.First effect 1 upper tube box of vertical tube climbing film evaporator sets two steam (vapor) outlets, a steam (vapor) outlet and 9 phase of second level preheater
Even, using the part secondary steam of the first effect vertical tube climbing film evaporator 1 as the heat source of second level preheater 9, another steaming
Vapor outlet is connected with the heating steam inlet of the second effect 2 shell side of vertical tube climbing film evaporator, as the second effect vertical tube climbing film evaporator 2
Heat source, 14 top of vertical tube climbing film evaporator steam-generating bank, be arranged demister 17, to dispel the sea carried in secondary steam
Water drop；Centre effect vertical tube climbing film evaporator, i.e. the second effect 2 upper tube box of vertical tube evaporator of basic configuration set a steam and go out
Mouthful, it is connected with the heating steam inlet that next effect is third effect 3 shell side of vertical tube climbing film evaporator, rises film as third effect vertical tube and steam
Send out the heat source of device 3；Third effect 3 upper tube box of vertical tube climbing film evaporator of end effect vertical tube climbing film evaporator, i.e. basic configuration sets 2
A steam (vapor) outlet, a steam (vapor) outlet suck chamber inlet with thermodynamic steam compressor 5 and are connected, and a part of secondary steam is as injection
Steam is aspirated by the working steam of thermodynamic steam compressor 5, the heat after boosting, heating as the first effect vertical tube climbing film evaporator 1
Source, another steam (vapor) outlet are connected with condenser 7, and remaining secondary steam imports condenser 7 by charging seawater condensing, and condensation is dived
Heat release, for charging seawater heating.
The thermodynamic steam compression vertical tube climbing-film evaporation desalination plant of twin-stage preheating sets two-stage preheater, level-one preheating
Device 8 is connected by seawater conveying pipe with the seawer outlet of condenser 7, connects level-one preheater 8 and the seawater of condenser 7 is defeated
It transports pipeline and uses tee tube, only part charging seawater enters level-one preheater 8, remaining is discharged as refrigerated sea water, level-one
8 thermal fluid inlet of preheater is connected with the condensation-water drain of the first effect 1 shell side of vertical tube climbing film evaporator, rises film with the first effect vertical tube
The steam condensate (SC) of evaporator 1 carries out level-one preheating as heat source；The charging seawater inlet and level-one of second level preheater 9
The seawer outlet of preheater 8 is connected, and the Preheated steam of thermal fluid inlet and the first effect 1 upper tube box of vertical tube climbing film evaporator exports
It is connected, using the part secondary steam of the first effect vertical tube climbing film evaporator 1 as the heat source of second level preheater 9, carries out secondary
Preheating；The seawer outlet of second level preheater 9 is connected with the charging seawater inlet of the first effect 1 lower tube box of vertical tube climbing film evaporator, passes through
The charging seawater of two-stage preheating enters the first effect vertical tube climbing film evaporator 1 and carries out explosive evaporation of gushing.
Thermodynamic steam compressor 5 is arranged in the thermodynamic steam compression vertical tube climbing-film evaporation desalination plant of twin-stage preheating,
Its main jet uses Laval-cavity nozzle, so that high-pressure work steam forms Supersonic Flow in suction chamber, and generates low pressure
Vacuum area sucks chamber inlet and third to aspirate the end effect i.e. secondary steam of basic configuration third effect vertical tube climbing film evaporator 3
The secondary steam outlet for imitating vertical tube climbing film evaporator 3 is connected；5 mixed vapour of thermodynamic steam compressor outlet setting direct-contact desuperheater
4, the desuperheat water inlet of direct-contact desuperheater 4 is connected with the condensed water fairlead of the first effect vertical tube climbing film evaporator 1, by thermodynamic steam
The superheated steam temperature reduction that compressor 5 exports promotes the heating steam stream of the first effect vertical tube climbing film evaporator 1 to saturated vapor
Amount；The outlet of direct-contact desuperheater 4 is connected with the heating steam inlet of the first effect 1 shell side of vertical tube climbing film evaporator, for the first effect vertical tube
Climbing film evaporator 1 provides heat source.Head effect heating vapor (steam) temperature should be controlled at 80 DEG C hereinafter, to avoid evaporator seawater side
Scale problems.To enable this desalination plant efficient operation, generally using 0.3MPa or more saturation or superheated steam conduct
Working steam, when steam pressure is lower than 0.3MPa, the injection performance of thermodynamic steam compressor 5 is lower, fills to entire sea water desalination
The promotion effect for the water generation ratio set is not significant.
According to basic configuration, two effect of thermodynamic steam compression vertical tube climbing-film evaporation desalination plant setting of twin-stage preheating
Fresh water flash tank 10, triple effect fresh water flash tank 11,9 condensation-water drain of second level preheater, the second effect vertical tube climbing film evaporator 2 condense
Water out is connect with 2 fresh water entrances of two effect fresh water flash tanks 10 respectively, and two effect fresh water flash tanks 10 flash vapor outlet under
One effect is 3 shell side vapour side space of the vertical tube climbing film evaporator connection of third effect, and due to the presence of pressure difference between effect, fresh water enters flash tank
After can occur part flash, flash steam enter next effect vertical tube climbing film evaporator shell side as heating steam, two effect fresh water flashes
10 water outlet of tank is connect with next effect fresh water flash tank, that is, 11 fresh water entrance of triple effect fresh water flash tank with fresh water conveying pipe；Cause
Triple effect fresh water flash tank 11 is end effect fresh water flash tank, behind there is no next effect vertical tube climbing film evaporator, therefore triple effect fresh water sudden strain of a muscle
Steaming pot 11 flashes vapor outlet and connect with 7 vapour side space of tail end condenser, and the seawater condensing for being entered condenser 7 is fresh water, triple effect
11 water outlet of fresh water flash tank is condensed water out with condenser 7 and is connect using three-way pipeline with fresh water pump 12, is exported for device
Product water.The condensed water fairlead of level-one preheater 8 is separately provided, and fresh water is individually sent back to steam generation facility, excess portion
It is allocated as product water.
Fig. 2 shows a kind of thermodynamic steam compressions two of twin-stage preheating to imitate vertical tube climbing-film evaporation desalination plant figure.
When two effects are implemented, the second effect vertical tube climbing film evaporator is last evaporator, need to only use one two effect fresh water flash tank, remaining is matched
It sets identical as triple-effect system.The secondary steam of 5 injection of thermodynamic steam compressor imitates vertical tube climbing film evaporator from end effect i.e. second,
Then the second effect vertical tube climbing film evaporator upper tube box need to open up 2 secondary steam outlets.Due to not having behind two effect fresh water flash tanks
Next effect vertical tube climbing film evaporator, therefore fresh water flash tank flash distillation vapor outlet is connected directly with tail end condenser vapour side space.
Fig. 3 shows a kind of thermodynamic steam compression quadruple effect vertical tube climbing-film evaporation desalination plant figure of twin-stage preheating.
When quadruple effect is implemented, increases quadruple effect vertical tube climbing film evaporator 19 on basic configuration triple-effect system and a quadruple effect is light
Water flash tank 18, quadruple effect vertical tube climbing film evaporator 19 are last evaporator, remaining configuration is identical as triple-effect system.Thermodynamic steam
The secondary steam of 5 injection of compressor comes from end effect i.e. quadruple effect vertical tube climbing film evaporator 19, then quadruple effect vertical tube climbing film evaporator
19 upper tube box need to open up 2 secondary steam outlets.Since quadruple effect fresh water flash tank 18 is end effect fresh water flash tank, the fresh water
Flash tank flash distillation vapor outlet is connected directly with tail end condenser vapour side space.
Claims (3)
1. a kind of thermodynamic steam compression vertical tube climbing-film evaporation desalination plant of twin-stage preheating, desalting plant includes vertical tube liter
Film evaporator, condenser (7), charging sea water pump (6), fresh water pump (12) and strong brine pump (13), and pipeline is used between each device
Connection；Vertical tube climbing film evaporator is cylindrical tube shell heat exchanger, inside sets steam-generating bank (14), down-comer (15), concentrated seawater
Fairlead (16) and demister (17)；It is characterized by: the desalting plant further includes thermodynamic steam compressor (5), spraying water subtracts
Warm device (4), level-one preheater (8), second level preheater (9) and fresh water flash tank, multiple-effect vertical tube climbing film evaporator using fair current into
Material mode connects, and two-stage preheater is arranged in head effect vertical tube climbing film evaporator front end, respectively with first effect vertical tube climbing film evaporator steam
Condensed water and part secondary steam are charging seawater preheating, aspirate end effect vertical tube climbing-film evaporation using thermodynamic steam compressor (5)
The heating of vertical tube climbing film evaporator is imitated headed by the secondary steam of device part；The concentrated seawater of every effect vertical tube climbing film evaporator lower tube box is drawn
Pipe (16) is connected with the seawater inlet pipe of next effect vertical tube climbing film evaporator lower tube box, and successively forward feed connects, until end effect
Vertical tube climbing film evaporator concentrated seawater pumps (13) discharger through strong brine by concentrated seawater fairlead (16)；Head effect vertical tube rises film
Evaporator upper tube box sets two steam (vapor) outlets, and a steam (vapor) outlet is connected with second level preheater (9), another steam (vapor) outlet with
The heating steam inlet of next effect vertical tube climbing film evaporator shell side is connected；
Centre effect vertical tube climbing film evaporator upper tube box sets a steam (vapor) outlet, the heating with next effect vertical tube climbing film evaporator shell side
Steam inlet is connected；End effect vertical tube climbing film evaporator upper tube box sets 2 steam (vapor) outlets, and a steam (vapor) outlet and thermodynamic steam compress
Device (5) sucks chamber inlet and is connected, another steam (vapor) outlet is connected with condenser (7)；
The level-one preheater (8) is connected by seawater conveying pipe with the seawer outlet of condenser (7), and level-one preheater is connected
(8) tee tube is used with the seawater conveying pipe of condenser (7), only part charging seawater enters level-one preheater (8), remaining
It is discharged as refrigerated sea water, the condensation-water drain of level-one preheater (8) thermal fluid inlet and first effect vertical tube climbing film evaporator shell side
It is connected；The charging seawater inlet of the second level preheater (9) is connected with the seawer outlet of level-one preheater (8), and hot fluid enters
Mouth is connected with the Preheated steam outlet of first effect vertical tube climbing film evaporator upper tube box, and the seawer outlet and head of second level preheater (9) are imitated
The charging seawater inlet of vertical tube climbing film evaporator lower tube box is connected；
The main jet of the thermodynamic steam compressor (5) uses Laval-cavity nozzle, and sucking chamber inlet and end effect vertical tube rise film
The secondary steam outlet of evaporator is connected, thermodynamic steam compressor (5) mixed vapour outlet setting direct-contact desuperheater (4), water spray
The desuperheat water inlet of attemperator (4) is connected with the condensed water fairlead of first effect vertical tube climbing film evaporator, direct-contact desuperheater (4) outlet
It is connected with the heating steam inlet of first effect vertical tube climbing film evaporator shell side；
Second level preheater (9) condensation-water drain, the second effect vertical tube climbing film evaporator condensation-water drain imitate fresh water with two respectively
2 fresh water entrances of flash tank (10) connect, two effect fresh water flash tank (10) flash distillation vapor outlets and next effect vertical tube climbing-film evaporation
The connection of device shell side vapour side space, two effect fresh water flash tank (10) water outlets and next effect fresh water flash tank fresh water entrance fresh water
Conveying pipe connection；Next effect fresh water flash tank presses identical connection type by progressive connection is imitated, until end effect fresh water flash tank；End
Effect fresh water flash tank flash distillation vapor outlet connect with tail end condenser (7) vapour side space, end effect fresh water flash tank water outlet with it is cold
Condenser (7) condensation water out is connect using three-way pipeline with fresh water pump (12).
2. the thermodynamic steam compression vertical tube climbing-film evaporation desalination plant of twin-stage preheating according to claim 1,
It is characterized in that: when realizing each effect vertical tube climbing film evaporator forward feed, going out in every effect vertical tube climbing film evaporator down-comer (15)
Setting structure is the concentrated seawater fairlead (16) of right-angle elbow pipe at mouthful, and elbow part protrudes into down-comer (15) lower end vertically upward
A distance receives the concentrated seawater to converge through down-comer (15).
3. the thermodynamic steam compression vertical tube climbing-film evaporation desalination plant of twin-stage preheating according to claim 1,
Be characterized in that: the vertical tube climbing film evaporator basic configuration is triple effect, is adjusted to two effects or quadruple effect according to Water l oad demand is made.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993002964A1 (en) * | 1991-08-09 | 1993-02-18 | Alfa-Laval Desalt A/S | Desalination plant, especially for use in marine and off-shore installations |
| CN103265089A (en) * | 2013-05-07 | 2013-08-28 | 西安交通大学 | High temperature high efficiency multi-effect seawater distillation desalination apparatus and method |
| CN103613153A (en) * | 2013-12-06 | 2014-03-05 | 上海电站辅机厂有限公司 | Nuclear power and low temperature multi-effect sea water desalination coupling cogeneration system |
| CN105399169A (en) * | 2015-12-22 | 2016-03-16 | 国家***天津海水淡化与综合利用研究所 | Multi-effect plate-type distillation seawater desalination system and method utilizing low-grade heat energy |
| CN210367048U (en) * | 2019-07-24 | 2020-04-21 | 大连理工大学 | Double-stage preheating thermal power steam compression type vertical pipe climbing film evaporation sea water desalination device |
-
2019
- 2019-07-24 CN CN201910669841.4A patent/CN110282679A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993002964A1 (en) * | 1991-08-09 | 1993-02-18 | Alfa-Laval Desalt A/S | Desalination plant, especially for use in marine and off-shore installations |
| CN103265089A (en) * | 2013-05-07 | 2013-08-28 | 西安交通大学 | High temperature high efficiency multi-effect seawater distillation desalination apparatus and method |
| CN103613153A (en) * | 2013-12-06 | 2014-03-05 | 上海电站辅机厂有限公司 | Nuclear power and low temperature multi-effect sea water desalination coupling cogeneration system |
| CN105399169A (en) * | 2015-12-22 | 2016-03-16 | 国家***天津海水淡化与综合利用研究所 | Multi-effect plate-type distillation seawater desalination system and method utilizing low-grade heat energy |
| CN210367048U (en) * | 2019-07-24 | 2020-04-21 | 大连理工大学 | Double-stage preheating thermal power steam compression type vertical pipe climbing film evaporation sea water desalination device |
Non-Patent Citations (3)
| Title |
|---|
| 周北辰等: "竖管升膜蒸发海水淡化装置热力性能研究", 《高等学校工程热物理第十九届全国学术会》 * |
| 惠绍棠等: "《海水淡化与循环经济》", 31 December 2005, 天津人民出版社, pages: 55 * |
| 许晓慧: "《盐化工生产技术》", 31 January 2014, 中央广播电视大学出版社, pages: 226 * |
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