CN105920863A - Siphon circulation, contraflow heat regeneration and vapor compression distillation device - Google Patents
Siphon circulation, contraflow heat regeneration and vapor compression distillation device Download PDFInfo
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- CN105920863A CN105920863A CN201610454633.9A CN201610454633A CN105920863A CN 105920863 A CN105920863 A CN 105920863A CN 201610454633 A CN201610454633 A CN 201610454633A CN 105920863 A CN105920863 A CN 105920863A
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- water
- fluid infusion
- siphon circulation
- siphon
- flow back
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/22—Evaporating by bringing a thin layer of the liquid into contact with a heated surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/28—Evaporating with vapour compression
- B01D1/2887—The compressor is integrated in the evaporation apparatus
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
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- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a siphon circulation, contraflow heat regeneration and vapor compression distillation device, which utilizes siphon circulation to replace a circulation pump so as to drive feed liquid, and condensation latent heat can be cyclically recovered, so that the investment and the power consumption of the circulation pump are saved; contraflow heat regeneration and climbing-film evaporation of the feed liquid are commonly driven by the siphon circulation and outer pressure of a pipeline, so that evaporation latent heat is provided for generating secondary steam; large-temperature rise and small-temperature difference contraflow heat regeneration is adopted, so that not only is shell-pass evaporation pressure increased to a large extent, but also tube-pass condensation pressure is reduced to a large extent, the pressure difference, the emission and the power consumption of a water vapor compressor are reduced to a large extent, and the power consumption per ton water is reduced to 5 to 8 kW*h/t to a large extent; the falling head of the siphon circulation, contraflow heat regeneration and vapor compression distillation device is fully utilized, so that a condensed water discharging pump and a feed liquid discharging pump are omitted.
Description
(1) technical field
The present invention relates to a kind of efficient pressure vapour method and drive siphon circulation counter flow back-heating way of distillation sea water
Desalting plant, or effluent treatment plant, or material concentration operation unit.
(2) background technology
Existing patent of invention " machine for desalination of sea water by using pressure gas flash evaporation " ZL 2,006 1 0153515.0
Operation principle be described as follows:
1, pressure vapour-condensation-heat recovery process: after pressure steam turbine is opened, indirect steam first divides through vapour-liquid
From the secondary separation of device, reduce salt fog further and carry secretly, improve product fresh water purity；Then from
Flash column top exit is pressed steam turbine to attract and is compressed；After improving pressure and temperature, deliver to condense
The water vapour side of heater condenses into fresh water, and by the circulation feed liquid of the another side of condensation latent heating；
When the fresh water liquid level indicated by the liquid-level switch of Condensation Heating device water vapour side reaches higher limit, open
Open or open big fresh water pump, the outlet at bottom of Condensation Heating device water vapour side attract fresh water, flow through
Confluxing and drained into the dilute side of fresh water regenerator after threeway by fresh water pump, release sensible heat preheats another side
Supplementary sea water, finally flow into product fresh water tank；And when the fresh water liquid level indicated by liquid-level switch
When reaching lower limit, close or turn down fresh water pump, stopping or reducing fresh water discharging.
2, feed liquid heat cycles: the feed liquid bottom flash column is flowed through diversion three-way and remittance by outlet
Drained into the feed liquid side of Condensation Heating device after stream threeway by circulating pump, another side indirect steam condense and add
Heat, to reclaim the latent heat of condensation, then flows through auxiliary heater, to be heated in its exit
Saturation.
3, feed liquid discharge process: feed concentration indicated by salinometer at flash column outlet at bottom
When reaching higher limit, open or open big feed pump, by the diversion three-way on flash column outlet at bottom pipe
From the feed liquid of heat cycles, draw a part, feed pump drain into the feed liquid side of feed liquid regenerator,
Release sensible heat preheats the supplementary sea water of another side, then drains into sea；And when indicated by salinometer
Feed concentration when reaching lower limit, close or turn down feed pump, stop or reducing feed liquid discharge.
4, sea water supplements process: when the feed liquid liquid level indicated by the liquid-level switch of flash column middle and lower part reaches
During lower limit, open or open big sea water pump, attract pretreated supplementary sea water, by sea water pump
Drain into fresh water regenerator and the sea water side of feed liquid regenerator of parallel connection through diversion three-way, arranged by another side
Hot fresh water or the hot feed liquid put preheat respectively, then through threeway mixing of confluxing, flow through on-condensible gas and go
Except the sea water side of tank, preheated further by the water recovery of another side, mend through threeway of confluxing the most again
Enter in the feed liquid of heat cycles, the import of co-implanted circulating pump；And when indicated by liquid-level switch
Feed liquid liquid level when reaching higher limit, close or turn down sea water pump, stopping or reducing supplementing sea water.
5, on-condensible gas removal process: when the secondary indicated by the pressure switch of flash column middle and upper part steams
When steam pressure reaches higher limit, open or open big vacuum pump, by Condensation Heating device water vapour middle side part
Air vent attract on-condensible gas, flow through on-condensible gas remove tank water vapour side, aqueous steaming
Vapour cooled down by the supplementary sea water of another side, condense, be separated into fresh water after, heavy collection is in water vapour side
Bottom, after fresh water accumulates certain water level, aqueduct valve bottom unlatching, draw heavy collection
Fresh water, is mixed into through threeway of confluxing and attracts the fresh water, jointly from Condensation Heating device water vapour side
The dilute side of fresh water regenerator is drained into, until on-condensible gas removes the freshwater level of tank by fresh water pump
Bottom out, turn off aqueduct valve bottom it；The isolated on-condensible gas in water vapour side then by
Vacuum pump drains into air；And when the indirect steam pressure indicated by pressure switch reaches lower limit,
Close or close small vacuum pump, stopping or reducing on-condensible gas removing.
6, flash process: due to the indirect steam pressure of flash column upper space, by pressure steam turbine and
Circulating pump is maintained at a below heating saturated vapor pressure corresponding to feed temperature；Therefore when heating material
Liquid reduces pressure through air relief valve, and when being sprayed in the middle part of flash column by multiple separatory nozzles: heating feed liquid
It is carved into as overheated feed liquid that instantaneous portion flash distillation is indirect steam；Flash column upper space makes flash distillation
Vehicle repair major separates up and down afterwards, and the preliminary salt fog that reduces is carried secretly, improves product fresh water purity；And
Isolate feed liquid and then provide flash distillation latent heat with self release sensible heat, and lower the temperature into saturated feed liquid, real
Existing adiabatic evaporation process；Its concentration increases simultaneously, proportion increases, by flash column outlet at bottom pipe
After flowing through diversion three-way, small part enters feed liquid discharge process, and major part enters feed liquid heating and follows
Ring.
Above-mentioned " machine for desalination of sea water by using pressure gas flash evaporation " patent, light as a kind of world's innovation sea water
Metallization processes, the compressed steam mode the highest by heat to power output efficiency, drive product water quality best
Flash process, evade tradition desalination process in, multistage flash evaporation and the condensation of multi-effect distilling
Latent heat losses, fouling and the sea water adaptability problem of burn into reverse osmosis of distillation, have independence
The technical advantage such as flashing operation, modularized production；Thus realize the optimum skill of desalination process
Art is integrated, and with minimum power consumption index, produces highest standard fresh water.
But, it is as follows to there is obvious technological deficiency in it:
1, when circulating pump drives feed liquid circulation to reclaim the latent heat of condensation, the on the one hand flash distillation circulation temperature difference
Cause circular flow bigger；On the other hand flow resistance, nozzle and the liquid level that circulating pump is overcome
Drop, choke pressure drop etc. cause circulating pump lift bigger；So that the flow of circulating pump, raise
Journey, investment, power consumption all increase；
2, press the pressure reduction of steam turbine, the sensible heat temperature difference of flash distillation heat cycles should be comprised, comprise again
High condensing pressure during systemic circulation flow so that pressure the pressure reduction of steam turbine, discharge capacity, investment,
Power consumption all increases；
3, do not make full use of the drop of device and take pump, feed liquid emptying pump etc. and set omitting fresh water
Standby, thus cause system complex, control that loop is numerous, operation stability reduces.
(3) summary of the invention
The present invention seeks on the basis of " machine for desalination of sea water by using pressure gas flash evaporation " existing patented technology
Continue innovation, by the process optimization of heat exchange cycle system: utilize siphon circulation to substitute circulating pump
Driving feed liquid, the circulation and stress latent heat of condensation, to save circulating pump investment and power consumption；Siphon circulation
The counter flow back-heating of feed liquid, climbing-film evaporation is jointly driven, it is provided that evaporation latent heat produces with pipeline external pressure
Indirect steam；Owing to using big temperature rise little temperature difference counter flow back-heating, shell side evaporation is not only substantially improved
Pressure, and tube side condensing pressure is greatly reduced, thus the pressure of water vapour compressor is greatly reduced
Difference, discharge capacity, power consumption, so that ton water power consumption is substantially reduced to 5-8kW*h/t；Make full use of device to fall
Difference is omitted and is condensed water emptying pump, feed liquid emptying pump.
The technical solution used in the present invention, i.e. siphon circulation reversely flow back towards hot pressing steam distillation device such as Fig. 1
Shown in, wherein: 1-siphon circulation counter flow back-heating climbing film evaporator；1-1-pressurized water steam inlet；
1-2-water vapour branch chamber；1-3-central vertical siphon backheat tube bundle；1-4-condenses water cavity；1-5-
Condense water out；1-6-fluid infusion import；1-7-indirect steam exports；1-8-material liquid outlet；1-9-
Preheater；1-10-air vent；2-water vapour compressor；3-liquid-level switch；4-fluid infusion flow is adjusted
Joint valve；5-condenses water regenerator；5-1-condenses water water seal；6-feed liquid regenerator；6-1-feed liquid
Water seal；7-fluid infusion case；8-filter；9-fluid infusion pump；10-check-valves；11-air bleeding valve；12-
Vacuum pump；13-pressure switch；14-temperature switch；15-fluid infusion；16-high steam forms,
It is characterized in that:
The top compression water vapour import 1-1 of siphon circulation counter flow back-heating climbing film evaporator 1 tube side,
Inside top water steam diversion chamber 1-2, middle part central vertical siphon backheat tube bundle 1-3, bottom coagulate
Bear water chamber 1-4, bottom condenses water out 1-5, forms water recovery heat release loop；
In the bottom fluid infusion import 1-6 of siphon circulation counter flow back-heating climbing film evaporator 1 shell side, middle part
Entreat outside vertical siphon backheat tube bundle 1-3, top indirect steam exports 1-7, the rainbow of composition fluid infusion
Inhale circulation counter flow back-heating climbing-film evaporation loop；
Siphon circulation counter flow back-heating climbing film evaporator 1 shell side top indirect steam outlet 1-7 passes through
Pipeline connects water vapour compressor 2, siphon circulation counter flow back-heating climbing film evaporator 1 tube side top pressure
Shrink steam inlet 1-1, forms indirect steam compression circuit；
Siphon circulation counter flow back-heating climbing film evaporator 1 shell side upper inside wall arranges liquid-level switch 3, depends on
According to the aperture of fluid infusion liquid level signal closed loop control fluid infusion flow control valve 4, and fluid infusion Flow-rate adjustment
The outlet of valve 4 is connected by pipeline mends bottom siphon circulation counter flow back-heating climbing film evaporator 1 shell side
Liquid import 1-6, forms fluid infusion flow control circuit；
Filter 8, fluid infusion pump 9, check-valves 10, shunting is connected by pipeline bottom fluid infusion case 7
Threeway, the in parallel fluid infusion side condensing water regenerator 5 and the fluid infusion side of feed liquid regenerator 6, remittance
Stream threeway, air bleeding valve 11, the import of fluid infusion flow control valve 4, form fluid infusion backheat loop；
Water out 1-5 is condensed by pipe bottom siphon circulation counter flow back-heating climbing film evaporator 1 tube side
Road connects the condensation water side of condensation water regenerator 5, condenses water water seal 5-1, and composition condenses water discharge
Heat release loop；
Bottom siphon circulation counter flow back-heating climbing film evaporator 1 shell side, material liquid outlet 1-8 passes through pipeline
Connect the feed liquid side of feed liquid regenerator 6, feed liquid water seal 6-1, composition feed liquid discharge heat release loop；
Siphon circulation counter flow back-heating climbing film evaporator 1 shell side lower inner wall arranges preheater 1-9, group
Become the startup preheating circuit of fluid infusion；
The top condensing water cavity 1-4 bottom siphon circulation counter flow back-heating climbing film evaporator 1 tube side sets
Put air vent 1-10, connect vacuum pump 12 by pipeline, form exhausting loop；
Siphon circulation counter flow back-heating climbing film evaporator 1 shell side top inner wall arranges pressure switch 13 He
Temperature switch 14；
The top of siphon circulation counter flow back-heating climbing film evaporator 1 tube side top water steam diversion chamber 1-2
Portion's inwall arranges pressure switch 13 and temperature switch 14；
Siphon circulation counter flow back-heating climbing film evaporator 1 shell side upper inside wall arranges temperature switch 14.
Fluid infusion 15 is sea water 15, or municipal middle water 15, or municipal sewage 15, or feed liquid 15,
Or sour water 15, or aqueous alkali 15, or organic solution 15, or inorganic solution 15, or industrial wastewater
One in 15, or mine bitter 15, or petroleum waste water 15, or chemical engineering sewage 15.
Water vapour compressor 2 is hot compression formula vapour vapour injector 2, and high steam 16 flows through it and enters
Steam ports is also sprayed by nozzle at high speeds, and the negative pressure formed is inverse by its ejecting port injection siphon circulation
Flow back to the indirect steam that hot climbing film evaporator 1 shell side top produces, and mix, during diffusion becomes
Pressure, high-temperature water vapor, flow out through its venthole.
Water vapour compressor 2 is the axial fan 2 of mechanical compression type, or spiral-flow type blower fan 2,
Or centrifugal fan 2, or roots-type blower fan 2, or turbine type blower fan 2, or Roots type vacuum pump
2, or centrifugal compressor 2, or Roots Compressor 2, or screw compressor 2, or turbine
Formula compressor 2；After being rotated by its impeller or rotor, suck siphon circulation counter flow back-heating climbing-film evaporation
The indirect steam produced in device 1, compresses it and becomes middle pressure, high-temperature water vapor.
Condensing water regenerator 5 is double pipe heat exchanger 5, or shell and tube exchanger 5, or plate
Formula heat exchanger 5, or plate-fin heat exchanger 5, or coil exchanger 5, or spiral lamina
The heat exchanger condensing water preheating fluid infusion 15 of formula heat exchanger 5.
Feed liquid regenerator 6 is double pipe heat exchanger 6, or shell and tube exchanger 6, or board-like
Heat exchanger 6, or plate-fin heat exchanger 6, or coil exchanger 6, or spiral plate type
The heat exchanger of the feed liquid preheating fluid infusion 15 of heat exchanger 6.
Operation principle of the present invention combines Fig. 1 and is described as follows:
1, indirect steam compression condenses: indirect steam is by siphon circulation counter flow back-heating climbing film evaporator
The indirect steam outlet 1-7 of 1 shell side, is attracted by water vapour compressor 2 and compresses, to improve pressure
Become superheated steam after power and temperature, deliver to siphon circulation counter flow back-heating climbing film evaporator 1 tube side,
Flow through pressurized water steam inlet 1-1, water vapour branch chamber 1-2, central vertical siphon from top to bottom
Inside backheat tube bundle 1-3, condense water cavity 1-4, condensation water out 1-5, with its mistake of releasing by parts
Hot sensible heat, the latent heat of condensation, supercool sensible heat, thus another with the heating of big temperature rise little temperature difference reflux type
Side fluid infusion 15；Then condense water to flow through condensation water regenerator 5 and condense water side, continue to discharge its mistake
Cold sensible heat preheats another side fluid infusion 15, and utilizes static pressure to flow through condensation water water seal 5-1 and discharge dress
Put.
2, feed liquid backheat distillation: liquid-level switch 3 controls fluid infusion 15 by fluid infusion flow control valve 4
Flow through outside fluid infusion import 1-6, central vertical siphon backheat tube bundle 1-3 from bottom to up, secondary steams
Vapor outlet 1-7, fluid infusion 15 therein at fluid infusion import 1-6 by the pressure effect of fluid infusion pump 9
And it being flowed directly to the bottom outside of central vertical siphon backheat tube bundle 1-3, another side mistake is reclaimed in segmentation
The supercool sensible heat that vapours is discharged, overheated sensible heat, the latent heat of condensation, be heated in a counter-current configuration
Heat up and climbing-film evaporation, it is provided that evaporation latent heat produces indirect steam.In central vertical siphon backheat
Between the shell of tube bundle 1-3 and siphon circulation counter flow back-heating climbing film evaporator 1, due to fluid infusion 15
Temperature is relatively low, proportion is relatively big, and sunk by action of gravity, thus form siphon circulation.Two
Before secondary steam is sucked by water vapour compressor 2 through indirect steam outlet 1-7, experience three times
Turn to and by inertial separation out-feed liquid drop, and inversely flow back to according to gravity indirect steam outlet 1-7,
Thus save silk screen and separate, reduce feed liquid and carry secretly, improve and condense water purity.The pressure at shell side top
Power switch 13 and the flow of temperature switch 14 co-controlling water vapour compressor 2.
3, water discharge is condensed: condense the purification bottom water cavity 1-4 and condense water according to gravity-head, and
Flow through the condensation water side of condensation water regenerator 5 through condensing water out 1-5, discharge its cooling sensible heat
Preheat the fluid infusion of another side, then discharge environment through condensing water water seal 5-1.
4, feed liquid discharge: the enrichment material bottom siphon circulation counter flow back-heating climbing film evaporator 1 shell side
Liquid is according to gravity-head, and flows through the feed liquid side of feed liquid regenerator 6 through material liquid outlet 1-8, release
Its cooling sensible heat preheats the fluid infusion of another side, then discharges environment through feed liquid water seal 6-1.
5, fluid infusion is added: by the feed liquid liquid level VFC fluid infusion pump 9 indicated by liquid-level switch 3
Rotating speed, drive fluid infusion 15 that is preprocessed and that be stored in fluid infusion case 7, flow through filter 8,
Fluid infusion pump 9, check-valves 10, diversion three-way, condensation water regenerator 5 in parallel and feed liquid backheat
The fluid infusion side of device 6, respectively by condensation water and the feed liquid pre-heating temperature elevation of another side, then through threeway of confluxing
Mixing, and the aerofluxus of air bleeding valve 11, and flow to the import of fluid infusion flow control valve 4.
6, preheating fluid infusion: siphon circulation counter flow back-heating climbing film evaporator 1 shell side lower inner wall is arranged
Preheater 1-9 start, to preheat fluid infusion, until siphon circulation counter flow back-heating climbing film evaporator 1
The temperature switch 14 that shell side upper inside wall is arranged reaches its preset value.
7, aerofluxus；Vacuum pump 12 starts, and by exhausting loop, and follows to environmental emission siphon
On-condensible gas in ring counter flow back-heating climbing film evaporator 1.
8, the hot compression of vapour vapour injector 2: high steam 16 flows through its air intake and by nozzle
Ejection at a high speed, the negative pressure formed rises film by its ejecting port injection siphon circulation counter flow back-heating and steams
Send out device 1 shell side top produce indirect steam, and mix, diffusion becomes middle pressure, high-temperature water steam
Vapour, in its venthole flows into the tube side of siphon circulation counter flow back-heating climbing film evaporator 1.
Siphon circulation reversely flows back towards hot pressing steam distillation device and compares existing patent, and its technological progress is as follows
Described:
(1) system integration siphon circulation counter flow back-heating climbing film evaporator, water vapour compressor, solidifying
Bear water regenerator, feed liquid regenerator；
(2) the shell side distillation indirect steam in being circulated by compression previous round, improves pressure and temperature
Spend and as thermal source, take turns feed liquid with after heating shell side when tube side condenses one, provide evaporation for it
Latent heat, it is achieved single-stage reclaims the latent heat of condensation and cooling sensible heat；
(3) utilize siphon circulation substitute circulating pump drive feed liquid, the circulation and stress latent heat of condensation, with
Save circulating pump investment and power consumption；
(4) siphon circulation and pipeline external pressure drive the counter flow back-heating of feed liquid, climbing-film evaporation jointly,
Evaporation latent heat is provided to produce indirect steam；
(5) owing to using big temperature rise little temperature difference counter flow back-heating, shell side vapor pres-sure is not only substantially improved
Power, and tube side condensing pressure is greatly reduced, thus be greatly reduced water vapour compressor pressure reduction,
Discharge capacity, investment, power consumption, so that ton water power consumption is substantially reduced to 5-8kW*h/t；
(6) make full use of device drop and omit condensation water emptying pump, feed liquid emptying pump, thus simple
Gasifying device and control loop, improve operation stability；
(7) the full-liquid type climbing film evaporator used, steams with horizontal pipe falling film evaporator and vertical tube falling
Send out device compare, heating tube wall incrustation is greatly reduced so that technique is more ripe, device more
Add reliable.
In sum, siphon circulation reversely flows back towards hot pressing steam distillation device by pressure vapour is condensed backheat
The adverse current optimization of mechanism: system integration siphon circulation counter flow back-heating climbing film evaporator, water vapor pressure
Contracting machine, condensation regenerator, feed liquid regenerator；Shell side in being circulated by compression previous round is steamed
Evaporate indirect steam, improve pressure and temperature and as thermal source, with the heating shell side when tube side condenses
Rear one takes turns feed liquid, provides evaporation latent heat for it, it is achieved single-stage reclaims the latent heat of condensation and cooling sensible heat；
Utilizing siphon circulation to substitute circulating pump and drive feed liquid, the circulation and stress latent heat of condensation, to save circulation
Pump investment and power consumption；Siphon circulation and pipeline external pressure jointly drive the counter flow back-heating of feed liquid, rise film
Evaporation, it is provided that evaporation latent heat produces indirect steam；Owing to using big temperature rise little temperature difference counter flow back-heating,
Shell side evaporating pressure is not only substantially improved, and tube side condensing pressure is greatly reduced, thus significantly
Reduce the pressure reduction of water vapour compressor, discharge capacity, investment, power consumption, so that ton water power consumption significantly drops
To 5-8kW*h/t；Make full use of device drop and omit condensation water emptying pump, feed liquid emptying pump, from
And simplify device and control loop, improve operation stability；The full-liquid type climbing film evaporator used,
Compared with horizontal pipe falling film evaporator and vertical tube falling vaporizer, heating tube wall incrustation is greatly reduced,
So that technique is more ripe, device is relatively reliable.
(4) accompanying drawing explanation
Fig. 1 is the system flow chart that the present invention uses mechanical type water vapour driven compressor.
Fig. 2 is the system flow chart that the present invention uses that hot compression formula vapour vapour injector drives.
As shown in Figure 1, wherein: 1-siphon circulation counter flow back-heating climbing film evaporator；1-1-presses
Shrink steam inlet；1-2-water vapour branch chamber；1-3-central vertical siphon backheat tube bundle；1-4-
Condense water cavity；1-5-condenses water out；1-6-fluid infusion import；1-7-indirect steam exports；1-8-
Material liquid outlet；1-9-preheater；1-10-air vent；2-water vapour compressor；3-liquid-level switch；
4-fluid infusion flow control valve；5-condenses water regenerator；5-1-condenses water water seal；6-feed liquid backheat
Device；6-1-feed liquid water seal；7-fluid infusion case；8-filter；9-fluid infusion pump；10-check-valves；11-
Air bleeding valve；12-vacuum pump；13-pressure switch；14-temperature switch；15-fluid infusion；16-high pressure
Steam.
(5) detailed description of the invention
The siphon circulation that the present invention proposes reversely flows back towards hot pressing steam distillation device, embodiment such as Fig. 1
Shown in, be now described as follows: its by recovery of latent heat amount 208kW, be vertically arranged, carbon steel siphon circulation
Counter flow back-heating climbing film evaporator 1；The rustless steel of diameter 200mm/ wall thickness 2.5mm/ length 200mm
Pipe pressurized water steam inlet 1-1；The hemispherical water vapour shunting of diameter 500mm/ height 250mm
Chamber 1-2；The cylindrical central vertical rainbow of overall diameter 300mm/ height 2500mm/ caliber 19mm
Suck back heat tube bundle 1-3；The hemispherical of diameter 500mm/ height 250mm condenses water cavity 1-4；Diameter
The stainless steel tube of 20mm/ wall thickness 1.5mm/ length 200mm condenses water out 1-5；Diameter 20mm/
The stainless steel tube fluid infusion import 1-6 of wall thickness 1.5mm/ length 200mm；Diameter 100mm/ wall thickness
The stainless steel tube indirect steam outlet 1-7 of 2.5mm/ length 200mm；Diameter 20mm/ wall thickness
The stainless steel tube material liquid outlet 1-8 of 1.5mm/ length 200mm；20kW anticipatory electric heater 1-9；Diameter
The stainless steel tube air vent 1-10 of 10mm/ wall thickness 1.5mm/ length 200mm；Suction pressure 1bar, row
Pressure 1.2bar, the water vapour centrifugal fan 2 of flow 0.3t/h；The liquid level of highly 500mm is opened
Close 3；The rustless steel fluid infusion flow control valve 4 of interface diameter 20mm/ wall thickness 1.5mm；Backheat amount
The bushing type of 20kW condenses water regenerator 5；Diameter 20mm/ wall thickness 1.5mm/ length 2000mm
Stainless steel tube condenses water water seal 5-1；The bushing type feed liquid regenerator 6 of backheat amount 20kW；Diameter
The stainless steel tube feed liquid water seal 6-1 of 20mm/ wall thickness 1.5mm/ length 2000mm；Volume 1m3's
Fluid infusion case 7；The stainless steel filter 8 of diameter 20mm/ wall thickness 1.5mm；Lift 10mH2O, stream
The fluid infusion pump 9 of amount 0.6t/h；The rustless steel check-valves 10 of diameter 20mm/ wall thickness 1.5mm；Directly
The rustless steel air bleeding valve 11 of footpath 20mm/ wall thickness 1.5mm；Vacuum-9mH2O, flow 0.1t/h
Vacuum pump 12；The pressure switch 13 of 0.5bar-2.0bar；The temperature switch of 0 DEG C-150 DEG C
14；Sea water 15 forms, it is characterised in that:
The top compression water vapour import 1-1 of siphon circulation counter flow back-heating climbing film evaporator 1 tube side,
Inside top water steam diversion chamber 1-2, middle part central vertical siphon backheat tube bundle 1-3, bottom coagulate
Bear water chamber 1-4, bottom condenses water out 1-5, forms water recovery heat release loop；
In the bottom fluid infusion import 1-6 of siphon circulation counter flow back-heating climbing film evaporator 1 shell side, middle part
Entreat outside vertical siphon backheat tube bundle 1-3, top indirect steam exports 1-7, the rainbow of composition fluid infusion
Inhale circulation counter flow back-heating climbing-film evaporation loop；
Siphon circulation counter flow back-heating climbing film evaporator 1 shell side top indirect steam outlet 1-7 passes through
Pipeline connects water vapour compressor 2, siphon circulation counter flow back-heating climbing film evaporator 1 tube side top pressure
Shrink steam inlet 1-1, forms indirect steam compression circuit；
Siphon circulation counter flow back-heating climbing film evaporator 1 shell side upper inside wall arranges liquid-level switch 3, depends on
According to the aperture of fluid infusion liquid level signal closed loop control fluid infusion flow control valve 4, and fluid infusion Flow-rate adjustment
The outlet of valve 4 is connected by pipeline mends bottom siphon circulation counter flow back-heating climbing film evaporator 1 shell side
Liquid import 1-6, forms fluid infusion flow control circuit；
Filter 8, fluid infusion pump 9, check-valves 10, shunting is connected by pipeline bottom fluid infusion case 7
Threeway, the in parallel fluid infusion side condensing water regenerator 5 and the fluid infusion side of feed liquid regenerator 6, remittance
Stream threeway, air bleeding valve 11, the import of fluid infusion flow control valve 4, form fluid infusion backheat loop；
Water out 1-5 is condensed by pipe bottom siphon circulation counter flow back-heating climbing film evaporator 1 tube side
Road connects the condensation water side of condensation water regenerator 5, condenses water water seal 5-1, and composition condenses water discharge
Heat release loop；
Bottom siphon circulation counter flow back-heating climbing film evaporator 1 shell side, material liquid outlet 1-8 passes through pipeline
Connect the feed liquid side of feed liquid regenerator 6, feed liquid water seal 6-1, composition feed liquid discharge heat release loop；
Siphon circulation counter flow back-heating climbing film evaporator 1 shell side lower inner wall arranges preheater 1-9, group
Become the startup preheating circuit of fluid infusion；
The top condensing water cavity 1-4 bottom siphon circulation counter flow back-heating climbing film evaporator 1 tube side sets
Put air vent 1-10, connect vacuum pump 12 by pipeline, form exhausting loop；
Siphon circulation counter flow back-heating climbing film evaporator 1 shell side top inner wall arranges pressure switch 13 He
Temperature switch 14；
The top of siphon circulation counter flow back-heating climbing film evaporator 1 tube side top water steam diversion chamber 1-2
Portion's inwall arranges pressure switch 13 and temperature switch 14；
Siphon circulation counter flow back-heating climbing film evaporator 1 shell side upper inside wall arranges temperature switch 14.
The embodiment of the present invention: the indirect steam that temperature is 100 DEG C is risen film by siphon circulation counter flow back-heating and steams
Send out the indirect steam outlet 1-7 of device 1 shell side, be transfused to the water vapour centrifugal fan of power 2kW
2 attract and compress, to improve to pressure 1.2bar, overtemperature 110 DEG C, adiabatic condensation temperature 103 DEG C
Superheated steam, deliver to siphon circulation counter flow back-heating climbing film evaporator 1 tube side, flow from top to bottom
Compressed water vapour import 1-1, water vapour branch chamber 1-2, central vertical siphon backheat tube bundle 1-3
Inner side, condensation water cavity 1-4, condensation water out 1-5, with releasing by parts its overheated sensible heat, condensation
Latent heat, supercool sensible heat, thus heat another side sea water 15 with big temperature rise little temperature difference reflux type；So
Rear condensation water flows through condensation water regenerator 5 and condenses water side, continues to discharge its supercool sensible heat and preheats
Another side sea water 15, and utilize static pressure to flow through condensation water water seal 5-1 and discharger.
Liquid-level switch 3 controls sea water 15 by fluid infusion flow control valve 4 and flows through fluid infusion from bottom to up
Outside import 1-6, central vertical siphon backheat tube bundle 1-3, indirect steam outlet 1-7, wherein
Sea water 15 be flowed directly to by the pressure effect of fluid infusion pump 9 at fluid infusion import 1-6 central authorities hang down
The bottom outside of straight siphon backheat tube bundle 1-3, the mistake that another side superheated steam is discharged is reclaimed in segmentation
Cold sensible heat, the latent heat of condensation, overheated sensible heat, be heated up in a counter-current configuration and rise film to 100 DEG C
Evaporation, it is provided that 208kW evaporation latent heat produces flow 0.3t/d indirect steam.At central vertical rainbow
Suck back between the shell of heat tube bundle 1-3 and siphon circulation counter flow back-heating climbing film evaporator 1, due to
The temperature of sea water 15 is relatively low, proportion is relatively big, and is sunk by action of gravity, thus forms siphon and follow
Ring.Before indirect steam is sucked by water vapour compressor 2 through indirect steam outlet 1-7, warp
Go through and turn to for three times and by inertial separation out-feed liquid drop, and inversely flow back to secondary according to action of gravity
Steam (vapor) outlet 1-7, thus save silk screen and separate, reduce feed liquid and carry secretly, improve and condense water purity.
The pressure switch 13 at shell side top and the stream of temperature switch 14 co-controlling water vapour compressor 2
Amount.
Condense the purification bottom water cavity 1-4 and condense water according to gravity-head, and through condensing water out 1-5
Flow through condense water regenerator 5 condensation water side, discharge its cooling sensible heat to preheat the fluid infusion of another side,
It is cooled to exhaust temperature 25 DEG C, salinity 30mg/L, reaches drinking water standard, then through condensing water
Water seal 5-1 discharges environment.
100 DEG C of enrichment feed liquids of temperature bottom siphon circulation counter flow back-heating climbing film evaporator 1 shell side
According to gravity-head, and flow through the feed liquid side of feed liquid regenerator 6 through material liquid outlet 1-8, discharge it
Cooling sensible heat preheats the fluid infusion of another side, is cooled to exhaust temperature 25 DEG C, salinity 70000mg/L,
Environment is discharged again through feed liquid water seal 6-1.
Fluid infusion by feed liquid liquid level VFC input power 0.4kW indicated by liquid-level switch 3
The rotating speed of pump 9, drive preprocessed and be stored in fluid infusion case 7 temperature 20 DEG C, salinity
The sea water 15 of 35000mg/L, flow through filter 8, fluid infusion pump 9, check-valves 10, diversion three-way,
In parallel condenses water regenerator 5 and the fluid infusion side of feed liquid regenerator 6, respectively by the condensation of another side
Water and feed liquid pre-heating temperature elevation are to 95 DEG C, then mix through threeway of confluxing, and the aerofluxus of air bleeding valve 11,
And flow to the import of fluid infusion flow control valve 4.
The preheater 1-9 that siphon circulation counter flow back-heating climbing film evaporator 1 shell side lower inner wall is arranged
Start, to preheat fluid infusion, until in siphon circulation counter flow back-heating climbing film evaporator 1 shell side top
The temperature switch 14 that wall is arranged reaches its preset value.
Vacuum pump 12 starts, by exhausting loop, and to environmental emission siphon circulation counter flow back-heating
On-condensible gas in climbing film evaporator 1.
High steam 16 flows through its air intake and is sprayed by nozzle at high speeds, and the negative pressure formed is passed through
The secondary that its ejecting port injection siphon circulation counter flow back-heating climbing film evaporator 1 shell side top produces steams
Vapour, and mix, diffusion becomes middle pressure, high-temperature water vapor, through its venthole flow into siphon circulation
In the tube side of counter flow back-heating climbing film evaporator 1.
The embodiment of the present invention: device daily output fresh water 7.2t/d, total power input 2.4kW, ton water
Power consumption 8kW*h/t, makes water Cheng Ben $4/t.
Claims (6)
1. siphon circulation reversely flows back towards a hot pressing steam distillation device, and it is by siphon circulation counter flow back-heating
Climbing film evaporator (1)；Pressurized water steam inlet (1-1)；Water vapour branch chamber (1-2)；In
Entreat vertical siphon backheat tube bundle (1-3)；Condense water cavity (1-4)；Condense water out (1-5)；
Fluid infusion import (1-6)；Indirect steam outlet (1-7)；Material liquid outlet (1-8)；Preheater (1-9)；
Air vent (1-10)；Water vapour compressor (2)；Liquid-level switch (3)；Fluid infusion flow control valve
(4)；Condense water regenerator (5)；Condense water water seal (5-1)；Feed liquid regenerator (6)；Material
Liquid water seal (6-1)；Fluid infusion case (7)；Filter (8)；Fluid infusion pump (9)；Check-valves (10)；
Air bleeding valve (11)；Vacuum pump (12)；Pressure switch (13)；Temperature switch (14)；Fluid infusion
(15)；High steam (16) forms, it is characterised in that: siphon circulation counter flow back-heating rises film and steams
Send out top compression water vapour import (1-1) of device (1) tube side, top water steam diversion chamber (1-2),
Inner side, middle part central vertical siphon backheat tube bundle (1-3), bottom condense water cavity (1-4), bottom
Condense water out (1-5), form water recovery heat release loop；Siphon circulation counter flow back-heating liter
The bottom fluid infusion import (1-6) of film evaporator (1) shell side, middle part central vertical siphon product heat cal rod
Bunch (1-3) outside, top indirect steam outlet (1-7), the siphon circulation adverse current of composition fluid infusion
Heating climbing-film evaporation loop；Siphon circulation counter flow back-heating climbing film evaporator (1) shell side top secondary
Steam (vapor) outlet (1-7) connects water vapour compressor (2), siphon circulation counter flow back-heating by pipeline
Climbing film evaporator (1) tube side top compression water vapour import (1-1), composition indirect steam compression
Loop；Siphon circulation counter flow back-heating climbing film evaporator (1) shell side upper inside wall arranges liquid-level switch
(3), according to the aperture of fluid infusion liquid level signal closed loop control fluid infusion flow control valve (4), and mend
The outlet of liquid stream adjustable valve (4) connects siphon circulation counter flow back-heating climbing film evaporator by pipeline
(1) fluid infusion import (1-6) bottom shell side, forms fluid infusion flow control circuit；Fluid infusion case (7)
Bottom by pipeline connect filter (8), fluid infusion pump (9), check-valves (10), diversion three-way,
The fluid infusion side of condensation water regenerator (5) being connected in parallel and the fluid infusion side of feed liquid regenerator (6),
Confluxing threeway, air bleeding valve (11), the import of fluid infusion flow control valve (4), composition fluid infusion is returned
Hot loop；Water out (1-5) is condensed bottom siphon circulation counter flow back-heating climbing film evaporator (1) tube side
Connected by pipeline and condense the condensation water side of water regenerator (5), condensation water water seal (5-1), group
Become to condense water discharge heat release loop；Bottom siphon circulation counter flow back-heating climbing film evaporator (1) shell side
Material liquid outlet (1-8) connects the feed liquid side of feed liquid regenerator (6), feed liquid water seal by pipeline
(6-1), composition feed liquid discharge heat release loop；Siphon circulation counter flow back-heating climbing film evaporator (1)
Shell side lower inner wall arranges preheater (1-9), the startup preheating circuit of composition fluid infusion；Siphon follows
The top condensing water cavity (1-4) bottom ring counter flow back-heating climbing film evaporator (1) tube side arranges row
QI KOU (1-10), connects vacuum pump (12) by pipeline, forms exhausting loop；Siphon circulation
Counter flow back-heating climbing film evaporator (1) shell side top inner wall arranges pressure switch (13) and temperature is opened
Close (14)；Siphon circulation counter flow back-heating climbing film evaporator (1) tube side top water steam diversion chamber
(1-2) top inner wall arranges pressure switch (13) and temperature switch (14)；Siphon circulation
Counter flow back-heating climbing film evaporator (1) shell side upper inside wall arranges temperature switch (14).
2. reversely floing back towards hot pressing steam distillation device according to the siphon circulation described in claim 1, it is special
Levy and be: fluid infusion (15) is sea water (15), or municipal middle water (15), or municipal sewage (15),
Or saline (15), or sour water (15), or aqueous alkali (15), or organic solution (15), or nothing
Machine solution (15), or industrial wastewater (15), or mine bitter (15), or petroleum waste water (15),
Or the one in chemical engineering sewage (15).
3. reversely floing back towards hot pressing steam distillation device according to the siphon circulation described in claim 1, it is special
Levy and be: water vapour compressor (2) is hot compression formula vapour vapour injector (2), high steam (16)
Flowing through its air intake and sprayed by nozzle at high speeds, the negative pressure formed passes through its ejecting port injection rainbow
Inhale and circulate the indirect steam that counter flow back-heating climbing film evaporator (1) shell side top produces, and mix,
Diffusion becomes middle pressure, high-temperature water vapor, flows out through its venthole.
4. reversely floing back towards hot pressing steam distillation device according to the siphon circulation described in claim 1, it is special
Levy and be: water vapour compressor (2) is the axial fan (2) of mechanical compression type, or eddy flow
Formula blower fan (2), or centrifugal fan (2), or roots-type blower fan (2), or turbine type blower fan
(2), or Roots type vacuum pump (2), or centrifugal compressor (2), or Roots Compressor
(2), or screw compressor (2), or turbo-compressor (2)；By its impeller or rotor
After rotation, suck the indirect steam produced in siphon circulation counter flow back-heating climbing film evaporator (1),
Compress it and become middle pressure, high-temperature water vapor.
5. reversely floing back towards hot pressing steam distillation device according to the siphon circulation described in claim 1, it is special
Levy and be: condensing water regenerator (5) is double pipe heat exchanger (5), or shell and tube exchanger
(5), or plate type heat exchanger (5), or plate-fin heat exchanger (5), or coiled changes
Hot device (5), or the heat exchange of condensation water preheating fluid infusion (15) of spiral heat exchanger (5)
Device.
6. reversely floing back towards hot pressing steam distillation device according to the siphon circulation described in claim 1, it is special
Levy and be: feed liquid regenerator (6) is double pipe heat exchanger (6), or shell and tube exchanger (6),
Or plate type heat exchanger (6), or plate-fin heat exchanger (6), or coil exchanger (6),
Or the heat exchanger of feed liquid preheating fluid infusion (15) of spiral heat exchanger (6).
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| CN201610454633.9A CN105920863A (en) | 2016-06-16 | 2016-06-16 | Siphon circulation, contraflow heat regeneration and vapor compression distillation device |
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| CN201610454633.9A CN105920863A (en) | 2016-06-16 | 2016-06-16 | Siphon circulation, contraflow heat regeneration and vapor compression distillation device |
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| CN106730962A (en) * | 2017-01-02 | 2017-05-31 | 侴乔力 | Condensing source heat pump Subcooled heat recovery drives single-effect distillator |
| CN106764990A (en) * | 2016-11-27 | 2017-05-31 | 侴乔力 | Step backheating type condensing source heat pump drives steam boiler |
| CN107126721A (en) * | 2017-05-16 | 2017-09-05 | 北京清大天工能源技术研究所有限公司 | A kind of vegetable protein extraction and the heat-pump-type concentration control method of process for sterilizing feed liquid |
| CN107510949A (en) * | 2017-09-26 | 2017-12-26 | 深圳市蓝石环保科技有限公司 | A kind of MVR vapo(u)rization systems |
| CN108379865A (en) * | 2017-02-03 | 2018-08-10 | 侴雨宏 | Condensing source heat pump drives multiple-effect heat pipe-type destilling tower |
| CN111252860A (en) * | 2020-03-07 | 2020-06-09 | 山西大学 | Negative pressure type membrane distillation device and method based on siphon circulation |
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