CN106145226A - The processing method of Halite water and processing means - Google Patents
The processing method of Halite water and processing means Download PDFInfo
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- CN106145226A CN106145226A CN201510176865.8A CN201510176865A CN106145226A CN 106145226 A CN106145226 A CN 106145226A CN 201510176865 A CN201510176865 A CN 201510176865A CN 106145226 A CN106145226 A CN 106145226A
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Abstract
The processing method of a kind of Halite water of the present invention and processing means.Wherein processing method includes: evaporate in initial steam and Halite water are passed through vaporizer, the indirect steam that vaporizer produces is fed again in vaporizer by compressor boost, the concentrated solution produced in evaporation process and initial steam are passed through in forced circulation crystallizer reaction, reaction output over-saturated brine, secondary concentration liquid and indirect steam through forced circulation crystallizer, secondary concentration liquid is passed through in forced circulation crystallizer again reaction, over-saturated brine is derived and is centrifuged processing；After vaporizer produces indirect steam, stop in vaporizer, be passed through initial steam.Technical scheme can efficiently solve the problem of high cost when using multiple-effect evaporation to process Halite water in prior art.
Description
Technical field
The present invention relates to technical field of sewage, in particular to processing method and the processing means of a kind of Halite water.
Background technology
Needing to use steam flooding during oil-field thick-oil exploitation, steam is produced by injection boiler, and normally used injection boiler is pressed
Commonly (moist steam) injection boiler, high-dryness steam injection boiler, superheated steam injection boiler, saturated steaming can be divided into by steam quality
Vapour injection boiler.In thickened oil recovery, particularly during super heavy oil recovery, steam need to be made to reach saturated mass dryness fraction or overheated, with
Improve oil recovery effect.In order to make steam reach saturated mass dryness fraction or overheated after, due in saturated or superheated steam almost without aqueous water
Existing, steam cannot carry salinity, so the Halite water after boiler will need to be concentrated by blowdown discharges.Boiler will discharge about
The Halite water of 10%.Halite water salinity about 3.3 × 104mg/L, temperature 80～90 DEG C.Halite water can not recycle,
Not only can destroy ecological environment around, also waste water resource and the heat energy of preciousness.
Multiple-effect evaporation is widely used in the industries such as desalinization, salt manufacturing, metallurgy at home.Be applicable to that treating capacity is big, cocnentration factor is low,
The operating mode that low-temperature receiver is sufficient, such as desalinization.Fig. 1 shows the operation principle that multiple-effect evaporation two is imitated: adds vapours and enters the 1st effect,
Heat cycles material, material enters vaporization chamber, discharges indirect steam, obtain concentrated solution, repeats evaporation the most according to this.
Saving Energy of Multi-effect Evaporation efficiency increases along with increasing of number of effect, but the amplitude that efficiency increases is more and more less, energy-saving effect after 5 effects
The most inconspicuous.Additionally, along with the increase of effect number, the dynamic and static equipment of system to increase therewith, and multisystem automatically controls complexity
Being greatly increased so that management difficulty improves, meanwhile, energy consumption can significantly increase along with the increase of circulating pump quantity, causes into
This increases greatly, and economy is deteriorated.
Summary of the invention
Present invention is primarily targeted at processing method and the processing means that a kind of Halite water is provided, to solve prior art makes
The problem of high cost when processing Halite water with multiple-effect evaporation.
To achieve these goals, according to an aspect of the invention, it is provided the processing method of a kind of Halite water, including:
Evaporate in initial steam and Halite water are passed through vaporizer, the indirect steam that vaporizer produces is fed again into by compressor boost
In vaporizer, the concentrated solution produced and initial steam are passed through in forced circulation crystallizer reaction, through forced circulation in evaporation process
Reaction output over-saturated brine, secondary concentration liquid and the indirect steam of crystallizer, is passed through forced circulation again by secondary concentration liquid
Crystallizer reacts, over-saturated brine is derived and is centrifuged processing；After vaporizer produces indirect steam, stop to vaporizer
In be passed through initial steam.
Further, over-saturated brine obtains crystal salt and secondary over-saturated brine after centrifugal treating, by secondary over-saturation salt
Water is passed through in forced circulation crystallizer again by mother solution pump.
Further, the indirect steam produced forced circulation crystallizer condenses and the condensed water obtained is led to boiler.
Further, the cooling water of the indirect steam produced by condensation forced circulation crystallizer leads to boiler.
Further, by the condensing hot air furnace that produces during evaporator heat exchange to boiler.
Further, vaporizer is circulated evaporation to obtain concentrated solution to Halite water.
To achieve these goals, according to an aspect of the invention, it is provided the processing means of a kind of Halite water, including:
Initial steam pipeline, carries initial steam；Vaporizer, is connected with initial steam pipeline, and receives initial steam and be evaporated Halite water
Output concentrated solution and indirect steam；Compressor, is connected with vaporizer, receives the indirect steam of vaporizer output and steams this secondary
Vapour pressurization uses in being fed again into vaporizer；Forced circulation crystallizer, is respectively connected with vaporizer and initial steam pipeline, receives new
Steam the concentrated solution reaction to evaporation output, output over-saturated brine, secondary concentration liquid and indirect steam；Forced circulation pump,
It is connected with forced circulation crystallizer and secondary concentration liquid is passed through in forced circulation crystallizer again reaction.
Further, processing means also includes centrifuge and mother solution pump, and centrifuge is connected with forced circulation crystallizer, and centrifuge connects
Receiving over-saturated brine to react, obtain crystal salt and secondary over-saturated brine, mother solution pump is connected with forced circulation pump, mother solution pump
Receive secondary over-saturated brine and this secondary over-saturated brine is pumped into forced circulation crystallizer by forced circulation.
Further, processing means also includes that boiler, boiler are connected with initial steam pipeline, and boiler produces initial steam supply initial steam
Pipeline.
Further, processing means also includes condenser, and the indirect steam that forced circulation crystallizer produces is condensed and incites somebody to action by condenser
The condensed water obtained leads to boiler.
Further, processing means also includes the cooling water pipeline being connected with condenser, cooling water after heat exchange in cooling water pipeline
Towards boiler.
Further, processing means also includes the condensate pump being connected with vaporizer, and condensate pump will produce during evaporator heat exchange
Raw condensing hot air furnace is to boiler.
Further, processing means also includes the vaporizer circulating pump being connected with vaporizer, and vaporizer circulating pump coordinates with vaporizer
Halite water is circulated evaporation to obtain concentrated solution.
Application technical scheme, evaporates in initial steam and Halite water are first passed through vaporizer, will produce in evaporation process
Indirect steam and concentrated solution.After device to be evaporated produces indirect steam, stop in vaporizer, be passed through initial steam.Utilize compressor pair
Indirect steam supercharging uses in being fed again into vaporizer in increasing.Thus can effectively utilize indirect steam, reduce and produce
Energy needed for initial steam, cost-effective.Afterwards, concentrated solution and the initial steam of generation are passed through in forced circulation crystallizer reaction,
Reaction output over-saturated brine, secondary concentration liquid and indirect steam through forced circulation crystallizer.By secondary concentration liquid again
It is passed through in forced circulation crystallizer reaction, over-saturated brine is derived and is centrifuged processing.So, pressure can just be utilized fully
Concentrated solution and secondary concentration liquid are constantly refined by circulation crystallization device.So there is no need to extra set up other equipment to two
Secondary concentrated solution refines, and has saved substantial amounts of cost.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.Below
Will be with reference to figure, the present invention is further detailed explanation.
Accompanying drawing explanation
The Figure of description of the part constituting the present invention is used for providing a further understanding of the present invention, and the present invention's is schematic real
Execute example and illustrate for explaining the present invention, being not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the fundamental diagram of multiple-effect evaporation in prior art；And
Fig. 2 shows the schematic diagram of the embodiment of the processing method of the Halite water according to the present invention.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the present invention and the feature in embodiment can be mutually combined.
Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
In order to make those skilled in the art be more fully understood that the present invention program, below in conjunction with the accompanying drawing in the embodiment of the present invention,
Technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only the present invention
The embodiment of a part rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not having
Have and make the every other embodiment obtained under creative work premise, all should belong to the scope of protection of the invention.
Fig. 2 shows the processing method of the Halite water of the present embodiment.Utilize the method, first initial steam and Halite water are passed through
Evaporation in vaporizer, will produce indirect steam and concentrated solution in evaporation process.After device to be evaporated produces indirect steam, stop to steaming
Send out in device and be passed through initial steam.Compressor is utilized to use in being fed again into vaporizer in indirect steam supercharging is increased.Thus may be used
To effectively utilize indirect steam, reduce the energy produced needed for initial steam, cost-effective.Afterwards, by produce concentrated solution and
Initial steam is passed through in forced circulation crystallizer reaction, through reaction output over-saturated brine, the secondary concentration of forced circulation crystallizer
Liquid and indirect steam.Secondary concentration liquid is passed through in forced circulation crystallizer again reaction, by over-saturated brine derive carry out from
The heart processes.So, forced circulation crystallizer just can be utilized fully constantly concentrated solution and secondary concentration liquid to be refined.This
Sample avoids the need for extra other equipment of setting up and refines secondary concentration liquid, has saved substantial amounts of cost.
As in figure 2 it is shown, in the present embodiment, over-saturated brine obtains crystal salt and secondary over-saturated brine after centrifugal treating,
Secondary over-saturated brine is passed through in forced circulation crystallizer again by mother solution pump.Wherein, crystal salt is by blowdown pump outward transport row
Remove.Do not separate out the secondary over-saturated brine of crystal salt to be again passed through in forced circulation crystallizer and react, thus can be up hill and dale
Halite water is processed completely.
In the present embodiment, the indirect steam produced forced circulation crystallizer condenses and the condensed water obtained is led to boiler.Logical
Often, the condensate temperature that this indirect steam obtains after condensation is the highest, directly can utilize the pre-of condensed water by boiler
Heat, reduces the energy needed for heating boiler water.Preferably, the cooling of indirect steam condensation forced circulation crystallizer produced
Water leads to boiler.Certainly, the cooling water cooling down above-mentioned indirect steam also absorbs many heats in condensation process, and this is cold
But water supply boiler is as boiler feed water, it is also possible to reduce the energy needed for heating boiler water.
During using vaporizer that Halite water stock solution is evaporated, the condensed water that can produce during evaporator heat exchange,
The temperature of this condensed water is the highest, and it is recycled to boiler, it is also possible to reduce the energy needed for heating boiler water.
In the present embodiment, vaporizer can be circulated evaporation to obtain concentrated solution to Halite water.
Present invention also offers the processing means of a kind of Halite water, this processing means includes: initial steam pipeline, vaporizer, pressure
Contracting machine, forced circulation crystallizer and forced circulation pump.Wherein, initial steam Pipeline transport initial steam, vaporizer and initial steam pipe
Road is connected, and receives initial steam Halite water is evaporated output concentrated solution and indirect steam.Compressor is connected with vaporizer,
Use in receiving the indirect steam of vaporizer output and this secondary steam high pressure being fed again into vaporizer.Forced circulation crystallizer with
Vaporizer and initial steam pipeline are respectively connected with, and receive initial steam and react the concentrated solution of evaporation output, output over-saturated brine,
Secondary concentration liquid and indirect steam.Forced circulation pump is connected with forced circulation crystallizer and secondary concentration liquid is passed through pressure again
Circulation crystallization device reacts.
Applying this processing means, initial steam is only passed through when system is driven, and after vaporizer operates completely, just stops feeding new steaming
Vapour.Vaporizer indirect steam out, compresses through compressor, and pressure, temperature are raised, and heat content increases.Compressed two
Secondary steam, to heating chamber and the Halite water heat exchange of vaporizer, makes Halite water maintain fluidized state.Add vapours then by changing
Heat is cooled to condensed water.Thus can effectively utilize indirect steam, reduce the energy produced needed for initial steam, cost-effective.
And secondary concentration liquid is passed through in forced circulation crystallizer again reaction, over-saturated brine is derived and is centrifuged processing.Just can fill
Forced circulation crystallizer is utilized constantly concentrated solution and secondary concentration liquid to be refined with dividing.So there is no need to extra setting up
Secondary concentration liquid is refined by other equipment, has saved substantial amounts of cost.
Preferably, described vaporizer is plate-type down-film evaporator.It is 101 DEG C by the isolated indirect steam of plate-type down-film evaporator,
111 DEG C can be warmed up to after compressor pressurizes, use in thus can coming back to plate-type down-film evaporator.
Also including stock solution groove in this processing means, the Halite water (saliferous 3%, temperature 90 DEG C) of discharged from coal-fired boiler enters as mother solution
After entering stock solution groove, after feed pump pressurizes, enter into the water-locator at plate-type down-film evaporator top, through water-locator uniform distribution in respectively
Wall between saline solution channel plate, forms the uniform liquid film of thin and thick, and liquid film flows downward under gravity.Liquid film is at flow process
In carry out heat exchange with steam in the opposite side steam channel of plate face, be heated to 107 DEG C and reach fluidized state and to maintain fluidized state even
Speed is dirty, enters into the skimming operation of forced circulation separation chamber and vapor-liquid separation.Halite water is in falling film evaporator Heat Room and separation
Room is after circulating and evaporating repeatedly, skimming, vapor-liquid separation, and moisture is evaporated out.At the beginning of driving, salt concentration 3% is female
Liquid, along with the continuous evaporation of moisture.When the concentration of Halite water reaches setting value, vapo(u)rization system enters steady-working state.
Now, separator base cone is sent to forced circulation crystallizer containing the strong brine accounting for total amount 10% that a small amount of salt is brilliant and circulates concentration further,
Enter eventually into centrifugation solidification flow process.
As in figure 2 it is shown, processing means also includes the vaporizer circulating pump being connected with vaporizer, vaporizer circulating pump is joined with vaporizer
Close and Halite water is circulated evaporation to obtain concentrated solution.Generally, 90% above section concentrated solution by vaporizer circulating pump and comes
Continuing above-mentioned evaporation process after liquid mixing, nearly 10% concentrated solution is discharged by base of evaporator together with separating out salt crystalline substance and is continued next link.
Processing means also includes centrifuge and mother solution pump, and centrifuge is connected with forced circulation crystallizer, and centrifuge receives over-saturation salt
Water reacts, and obtains crystal salt and secondary over-saturated brine, and mother solution pump is connected with forced circulation pump, and mother solution pump receives secondary and surpasses
This secondary over-saturated brine is also pumped into forced circulation crystallizer by forced circulation by saturated brine.Generally can be in forced circulation
Arrange discharging pump between crystallizer and centrifuge to be transported through.Wherein, crystal salt is got rid of by blowdown pump outward transport.Do not separate out crystallization
The secondary over-saturated brine of salt is again passed through in forced circulation crystallizer and reacts, and thus can carry out Halite water up hill and dale
Process completely.Wherein, it is also possible between mother solution pump and centrifuge, arrange mother liquor tank, by mother liquor tank to secondary over-saturated brine
It is collected exporting again.Preferably, centrifuge is bipolar piston push centrifuge.Concrete workflow is: over-saturated brine
Entering into forced circulation crystallizer to force further to concentrate, due to the continuous evaporation of moisture, strong brine is with crystal salt with mixed state altogether
Deposit.The mixture brilliant with salt containing a small amount of over-saturated brine that forced circulation crystallizer is discharged is transported to Horizontal two-stage piston through discharging pump
Pusher centrifuge, the saturated solution that centrifuge throws away imports mother liquor tank, is pumped into forced circulation separation chamber cyclic system through mother solution
Unite further salt discharge.
In the present embodiment, processing means also includes that boiler, boiler are connected with initial steam pipeline, and it is new that boiler produces initial steam supply
Steam pipework.Processing means also includes condenser, and the indirect steam that forced circulation crystallizer produces is condensed and will obtain by condenser
Condensed water lead to boiler.Indirect steam condensate temperature of obtaining after condensation is appointed the highest, and directly passing through boiler can be in order to
With the preheating of condensed water, reduce the energy needed for heating boiler water.Specifically, can first arrange condensate draining condensed water is entered
Row is collected, then by water pump, condensed water is supplied boiler.
Processing means also includes the cooling water pipeline being connected with condenser, in order to further the preheating in cooling procedure be reclaimed,
In cooling water pipeline, the cooling water after heat exchange leads to boiler.Certainly, the cooling water of above-mentioned indirect steam is cooled down in condensation process also
Absorb many heats, using this cooling water supply boiler as boiler feed water, it is also possible to reduce the energy needed for heating boiler water
Amount.
As in figure 2 it is shown, processing means also includes the condensate pump being connected with vaporizer, condensate pump is by during evaporator heat exchange
The condensing hot air furnace produced is to boiler.Generally, the condensed water that evaporator heat exchange produces can reach 105 DEG C, the calorific value of this condensed water
Higher, it is recycled to boiler, it is also possible to reduce the energy needed for heating boiler water.
The technical scheme is that and analyzed based on to Halite water physical property, summed up its corrosivity, scaling tendency,
The physical property features such as the elevation of boiling point, oil-containing, density, propose on this basis.Make Water Sproading rate up to 95%, salt etc. finally with
Solid-state form reclaims, it is achieved the zero-emission of sewage.
Steam consumption during technical scheme is actually used is less, in the stage that vaporizer runs only when driving
Use a small amount of initial steam, follow-up use initial steam hardly；The phase process water yield run at forced circulation crystallizer is total process
The 10% of amount, the quantity of steam of use is only 0.07t/m3Water.The main energy consumption of this invention is electric energy, due to concentrate saline close to saturated,
So compressor consumption electric energy is higher, about 30kw.h/m3Water, even if so, the unit cost producing condensed water compares other
Evaporation technique is the most much lower, and the electricity charge are pressed 0.5kw.h and considered, processed in units cost is 24 yuan/ton.
Technical scheme is sufficiently used the waste heat of indirect steam, condensed water and coolant, it is possible to reduce heating kettle
Energy needed for stove, reduces cost.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for those skilled in the art
For, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of being made, etc.
With replacement, improvement etc., should be included within the scope of the present invention.
Claims (13)
1. the processing method of a Halite water, it is characterised in that including:
Evaporate in initial steam and Halite water are passed through vaporizer, the indirect steam that described vaporizer produces is passed through compressor
Supercharging is fed again in described vaporizer, and the concentrated solution produced in evaporation process and described initial steam are passed through forced circulation knot
Reacting in brilliant device, reaction output over-saturated brine, secondary concentration liquid and secondary through described forced circulation crystallizer steam
Vapour, is again passed through in described forced circulation crystallizer reaction by secondary concentration liquid, by described over-saturated brine derive carry out from
The heart processes；
After described vaporizer produces indirect steam, stop being passed through initial steam in described vaporizer.
The processing method of Halite water the most according to claim 1, it is characterised in that described over-saturated brine is through centrifugal place
Obtain crystal salt and secondary over-saturated brine after reason, described secondary over-saturated brine is passed through pressure again by mother solution pump and follows
In ring crystallizer.
The processing method of Halite water the most according to claim 1, it is characterised in that described forced circulation crystallizer is produced
Indirect steam condensation and the condensed water that obtains is led to boiler.
The processing method of Halite water the most according to claim 3, it is characterised in that described forced circulation crystallizer will be condensed
The cooling water of the indirect steam produced leads to described boiler.
The processing method of Halite water the most according to claim 1, it is characterised in that will produce during described evaporator heat exchange
Raw condensing hot air furnace is to boiler.
The processing method of Halite water the most according to claim 1, it is characterised in that described vaporizer is to described Halite water
It is circulated evaporation to obtain described concentrated solution.
7. the processing means of a Halite water, it is characterised in that including:
Initial steam pipeline, carries initial steam；
Vaporizer, is connected with described initial steam pipeline, and receive described initial steam Halite water is evaporated output concentrate
Liquid and indirect steam；
Compressor, is connected with described vaporizer, receives the indirect steam of described vaporizer output and to this secondary steam high pressure
Use in being fed again into described vaporizer；
Forced circulation crystallizer, is respectively connected with described vaporizer and described initial steam pipeline, receives described initial steam right
The concentrated solution reaction of described evaporation output, output over-saturated brine, secondary concentration liquid and indirect steam；
Forced circulation pump, is connected with described forced circulation crystallizer and secondary concentration liquid is passed through described forced circulation knot again
Brilliant device reacts.
The processing means of Halite water the most according to claim 7, it is characterised in that described processing means also includes centrifuge
With mother solution pump, described centrifuge is connected with described forced circulation crystallizer, and described centrifuge receives described over-saturated brine and enters
Row reaction, obtains crystal salt and secondary over-saturated brine, and described mother solution pump is connected with described forced circulation pump, described mother solution
Pump receives described secondary over-saturated brine and by described forced circulation, this secondary over-saturated brine is pumped into described pressure follows
Ring crystallizer.
The processing means of Halite water the most according to claim 7, it is characterised in that described processing means also includes boiler,
Described boiler is connected with described initial steam pipeline, and described boiler produces described initial steam and supplies described initial steam pipeline.
The processing means of Halite water the most according to claim 9, it is characterised in that described processing means also includes condenser,
The indirect steam that described forced circulation crystallizer is produced by described condenser condenses and the condensed water obtained is led to described pot
Stove.
The processing means of 11. Halite waters according to claim 10, it is characterised in that described processing means also includes with described
The cooling water pipeline that condenser is connected, in described cooling water pipeline, the cooling water after heat exchange leads to described boiler.
The processing means of 12. Halite waters according to claim 9, it is characterised in that described processing means also includes with described
Vaporizer be connected condensate pump, described condensate pump by during described evaporator heat exchange produce condensing hot air furnace to institute
State boiler.
The processing means of 13. Halite waters according to claim 7, it is characterised in that described processing means also includes with described
The vaporizer circulating pump that vaporizer is connected, described vaporizer circulating pump coordinates with described vaporizer and carries out described Halite water
Circulating and evaporating is to obtain described concentrated solution.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108217795A (en) * | 2017-11-28 | 2018-06-29 | 中石化石油工程技术服务有限公司 | Gas water evaporative crystallization processing unit with high salt |
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| CN203668012U (en) * | 2014-01-14 | 2014-06-25 | 中盐金坛盐化有限责任公司 | Preparation system for high-purity salt |
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| SU581963A1 (en) * | 1976-02-18 | 1977-11-30 | Предприятие П/Я А-1297 | Method of crystallization of salts from saturated solutions |
| RU2212265C2 (en) * | 2001-02-19 | 2003-09-20 | Открытое акционерное общество "Металлург" | Plant for evaporation of solutions at crystallization of salts |
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| CN108217795A (en) * | 2017-11-28 | 2018-06-29 | 中石化石油工程技术服务有限公司 | Gas water evaporative crystallization processing unit with high salt |
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