CN103241785B - Industrially discharged strong brine treatment method - Google Patents

Industrially discharged strong brine treatment method Download PDF

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Publication number
CN103241785B
CN103241785B CN201310192582.3A CN201310192582A CN103241785B CN 103241785 B CN103241785 B CN 103241785B CN 201310192582 A CN201310192582 A CN 201310192582A CN 103241785 B CN103241785 B CN 103241785B
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strong brine
evaporator room
water vapor
flow
air
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CN103241785A (en
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任重
龙嘉
李继富
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Beijing Wanbangda Environmental Protection Technology Co Ltd
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Beijing Wanbangda Environmental Protection Technology Co Ltd
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Abstract

The invention discloses an industrially discharged strong brine treatment method, which comprises the following steps: 1, conveying strong brine with a temperature of 40-90 DEG C into an evaporation chamber; 2, taking water vapor generated by the strong brine in the evaporation chamber out of the evaporation chamber through an air flow; 3, conveying the air flow, leaving from the evaporation chamber and carrying the water vapor, into the inside of a condensation chamber so as to condense the air flow into distilled water, and taking the distilled water out of the condensation chamber; 4, returning the air flow condensed into the distilled water to the evaporation chamber, returning to the step 2, and circularly taking water vapor generated by the strong brine in the evaporation chamber out of the evaporation chamber and feeding the water vapor into the condensation chamber; and 5, circularly evaporating the strong brine in the evaporation chamber repeatedly to generate crystallized salt solid residues, and taking the crystallized salt solid residues out of the evaporation chamber. According to the method disclosed by the invention, water vapor generated by the strong brine in the evaporation chamber is circularly taken out of the evaporation chamber and condensed into distilled water, and then the distilled water is continuously discharged to the outside, thereby effectively carrying out concentration treatment on the strong brine, reducing the energy consumption for treatment, and lowering the cost of treatment equipment.

Description

The method for treating strong brine of industrial discharge
Technical field
The present invention relates to a kind of method for treating strong brine of industrial discharge.
Background technology
For the salt solution (hereinafter referred to as strong brine) of sensu lato industrial discharge high density that comprises magnesium ion, calcium ion, iron ion, sodium-chlor in prior art, especially in prior art, specific conductivity is that the more than 60000 μ s/cm effective treating method of strong brine is to use multiple-effect high-temperature evaporation unit, make processed water exceed boiling point, become steam raising and go out.Its shortcoming is that power consumption is large, and efficiency is low.
Summary of the invention
For the problem existing in correlation technique, the object of the present invention is to provide a kind for the treatment of process of strong brine of industrial discharge, can effectively process the strong brine of industrial discharge.
For achieving the above object, the invention provides a kind of method for treating strong brine of industrial discharge, comprising: step 1: the strong brine that is 40-90 DEG C by temperature is sent into evaporator room; Step 2: the water vapor that strong brine is produced in evaporator room, carries out from evaporator room by air-flow; Step 3: send into condensing chamber and be condensed into distilled water leaving air-flow evaporator room, that carry water vapor, distilled water is sent to condensing chamber; And step 4: will return to evaporator room through the air-flow being condensed into after distilled water, then return to step 2, cyclically send evaporator room with the water vapor that strong brine is produced in evaporator room and enter condensing chamber; Step 5: in evaporator room, strong brine has produced crystal salt solid residue after iterative cycles evaporation, and crystal salt solid residue is sent to evaporator room.
Preferably, in step 4, the air-flow after condensation process is just returning to evaporator room after heating, and wherein, the air-flow after heating, in the temperature of evaporator room, reaches the temperature that makes strong brine generation water vapor in evaporator room.
Preferably, method is carried out all the time under the Working environment of 40-90 DEG C.
Preferably, filler is set in evaporator room, strong brine is attached on the outside surface of filler to increase its evaporation area.
Preferably, in order to carry the air-flow of the water vapor producing in evaporator room, provided by blower fan.
Preferably, in described step 1, strong brine is that specific conductivity is strong brine more than 60000 μ s/cm.
Beneficial effect of the present invention is: the water vapor circulation that method of the present invention produces in evaporator room the strong brine of industrial discharge is sent evaporator room and is condensed into distilled water, distilled water is constantly discharged, thereby effectively strong brine is carried out to concentration, reduce and process energy consumption, reduce treatment facility cost.
Brief description of the drawings
Fig. 1 is the schema of method for treating strong brine of the present invention;
Fig. 2 is the schematic diagram of implementing an example of the strong brine treatment unit of method for treating strong brine of the present invention.
Embodiment
Below in conjunction with accompanying drawing 1, the specific embodiment of the invention is described.
The method for treating strong brine of industrial discharge of the present invention comprises: step 1-step 5, and wherein step 1-step 4, illustrates with S1-S4 respectively in the drawings, step 5 is not shown in Figure 1.Particularly, comprise step 1: the strong brine (for example specific conductivity is more than 60000 μ s/cm) that is 40-90 DEG C by temperature is sent into evaporator room; Step 2: the water vapor that strong brine is produced in evaporator room, carries out from evaporator room by air-flow; Step 3: send into condensing chamber and be condensed into distilled water leaving air-flow evaporator room, that carry water vapor, distilled water is sent to condensing chamber, should be appreciated that, what be condensed into distilled water is the entrained steam of air-flow; And step 4: will return to evaporator room through the air-flow being condensed into after distilled water, then return to step 2, cyclically send evaporator room with the water vapor that strong brine is produced in evaporator room and enter condensing chamber (obviously, if in step 3 not by steam total condensation, air-flow carries uncooled water vapor and returns to together evaporator room), circulation and so forth, is condensed into distilled water again and sends to realize steam cycle that strong brine is produced in evaporator room and send evaporator room.
By above-mentioned steps 1-4, the present invention can effectively process strong brine.
Obviously, in above-mentioned steps 4, cyclically send evaporator room condensation, can refer to flowing of circulating at air-flow between evaporator room and condensing chamber, thereby the water vapor that drives strong brine to produce circulates between evaporator room and condensing chamber.
Be appreciated that water vapor can form water of condensation after condensation, thereby before turning back to evaporator room, do not carry steam because steam is condensed completely in the air-flow after being condensed into distilled water, so only there is air-flow to return to evaporator room after condensation process; Same, water vapor also may be by total condensation in condensing chamber, and part is not condensed water vapor also can be along with air-flow returns to evaporator room.That is, in above-mentioned steps 4, in the described air-flow being condensed into after distilled water, can carry water vapor, also can not take water vapor.No matter which kind of situation, the water vapor that air-flow can constantly produce strong brine in evaporator room carries out evaporator room to carry out condensation.
Above-mentioned strong brine preferably temperature is that the specific conductivity of 40-90 DEG C is strong brine more than 60000 μ s/cm, and strong brine at least comprises one or more in magnesium ion, calcium ion, iron ion, sodium-chlor.Should be appreciated that just a kind of preferred mode of the strong brine of mentioning here.In addition, except meeting 40-90 defined above DEG C temperature and the above specific conductivity condition of 60000 μ s/cm, strong brine of the present invention can be except containing water also, only contain magnesium ion, calcium ion, iron ion, sodium-chlor, no matter and per-cent between each component how, as long as can evaporating at 40-90 DEG C.
Further, as a kind of optimal way, in the above-mentioned step 4 of the present invention, the air-flow after condensation process can just return to evaporator room after heating, and the now temperature of the air-flow after heating is able to make the strong brine evaporation in evaporator room.So correspondingly accelerate the velocity of evaporation of strong brine.
Step 5 in the inventive method is: after above-mentioned steps 1-4, in evaporator room, strong brine has produced crystal salt solid residue (can be referred to as dry salt) after above-mentioned iterative cycles evaporation, and described crystal salt solid residue is sent to described evaporator room.
The above-mentioned method of the present invention is preferably carried out all the time under the Working environment of 40-90 DEG C.
Further, when strong brine evaporates in evaporator room, be to be attached on the filler outside surface being arranged in evaporator room, increase the evaporation area of strong brine with this.Correspondingly just accelerate the velocity of evaporation of strong brine in evaporator room.
The present invention above-mentioned in order to carry the air-flow of the water vapor producing in evaporator room, preferably provided by blower fan.The air-flow that, blower fan provides makes to be evaporated object can carry out by iterative cycles.
In addition, referring to Fig. 2, some illustrate in order to implement a kind of strong brine treatment unit of above-mentioned method for treating strong brine.This strong brine treatment unit comprises: evaporator room 1, condensing chamber 2, water-supply pipe 15 and bypass pipe 14, wherein, evaporator room has the first entrance 6 and the first outlet 3.Condensing chamber 2 has the second entrance 4 and the second outlet 5, the first outlet 3 of evaporator room is communicated with the second entrance 4 of condensing chamber 2, the second outlet 5 of condensing chamber 2 is communicated with the first entrance 6 of evaporator room, form the first circulation loop with this, and, in condensing chamber 2, have to be arranged between the second outlet 5 and the second entrance 4, to be provided with the first prolong and the second prolong taking the water of condensation that forms in condensing chamber as refrigerant.Water-supply pipe 15 provides fluid to be evaporated in evaporator room outside to evaporator room, is provided with bypass pipe, and bypass pipe is communicated with formation the second circulation loop with evaporator room, and bypass pipe supplies vapour stream warp in evaporator room, and carries out heat exchange with the fluid to be evaporated in water-supply pipe.Meanwhile, in order to guide the steam in evaporator room can flow to condensing chamber 2, be provided with blower fan 13 in the first circulation loop, blower fan is arranged between the first outlet 3 and the second entrance 4, make from the steam of evaporator room can be recycled condensation in condensing chamber.Should be appreciated that, clearly can provide fluid to be evaporated by water-supply pipe to evaporator room by pump 11.In addition, above-mentioned preferably strong brine of fluid to be evaporated.Should be appreciated that, the position that above-mentioned blower fan arranges is only preferred mode, can also be arranged on any position that can guide the steam flow condensing chamber 2 in evaporator room of the first circulation loop.
The water of condensation that above-mentioned condensing chamber produces, the water being produced by the condensation of the first prolong 16 and the second prolong 17 exactly, and the water of condensation producing is preferably as the refrigerant of the second prolong, and the refrigerant of the first refrigerant pipe can be traditional such as freonll-11 of refrigerant etc., or also use above-mentioned water of condensation as refrigerant.
Further, the quantity of evaporator room is at least one, preferably four above (all not illustrating in accompanying drawing), and the first outlet 3 of each evaporator room is all communicated with the second entrance 4 of condensing chamber 2, the second outlet 5 of condensing chamber 2 is communicated with the first entrance 6 of each evaporator room, here, the quantity of condensing chamber 2 second outlets 5 and the second entrance 4 at least respectively has one, concrete quantity does not limit, its can for can according to above-mentioned the first outlet 3 and the second entrance 4, the second outlet 5 with the first entrance 6 be communicated with individual arbitrarily.Should be appreciated that, as shown in Figure 1, the first outlet 3 of each evaporator room can be same mouthful.When evaporator room is while being multiple, many water-supply pipes can be set, the bypass pipe heat exchange outside each water-supply pipe and evaporator room.
For convenience's sake, below description to evaporator room, be all as the criterion with one, the structure of the each evaporator room of all the other any amount is all identical with evaporator room described below.
According to the strong brine heat exchange in above-mentioned bypass pipe and water-supply pipe, its implementation is that water-supply pipe is wrapped on bypass pipe.Should be appreciated that this just a kind of preferred mode, other modes that can realize heat exchange are equally applicable to strong brine treatment unit, for example bypass pipe is spaced apart with water-supply pipe and need not directly contact, as long as spacing distance can make fluid generation heat exchange in fluid and water-supply pipe in bypass pipe.
Also comprise pipeline section 7, a port of pipeline section 7 is communicated with the second outlet 5, and another port is communicated with the first entrance 6, and is provided with heating unit on pipeline section 7.In a preferred embodiment, the second outlet 5 and the first entrance 6 are realized connections by pipeline section 7, have realized in the above-mentioned step 4 of the present invention with this, and the air-flow at condensing chamber after condensation process just returns to evaporator room after heating.The heating unit of pipeline section 7 preferably be warm air curtain, preferred Heating temperature is just to make strong brine in evaporator room produce the temperature of steam, for example, be preferably 40-90 DEG C or 60-90 DEG C, but can not exceed 90 DEG C.Obviously be appreciated that under the situation of pipeline section 7 with heating unit, in evaporator room, strong brine can continue to produce steam, thereby can finally make the strong brine in evaporator room finally become crystalline solid residue.
Further, be provided with nozzle 8 in evaporator room 1, nozzle 8 is between the first entrance 6 and the first outlet 3, and above-mentioned water-supply pipe, is communicated with the water outlet of water-supply pipe and realizes for strong brine to evaporator room with nozzle.Can also use pump 11 as above-mentioned, pump is that 40-90 DEG C and specific conductivity are that more than 60000 μ s/cm strong brine is carried by water-supply pipe by temperature, sprays into evaporator room 1 by nozzle.Certainly using nozzle is only optimal way, as long as can carry strong brine to evaporator room, also can without nozzle.Further preferably, all nozzles are that plastics are made, and certainly, these plastics should be able to resistance to strong brine corrosion.
Evaporator room 1 also comprises: padding support frame 10 and be placed on the filler 9 on padding support frame 10, the two is all arranged in evaporator room 1, and all between nozzle 8 and the first entrance 6, padding support frame 10 has the through hole communicating with the first entrance 6.Filler 9 can be any materials of resistance to strong brine corrosion, sprays after strong brine at nozzle 8, and strong brine is trickled down on filler 9, has therefore increased the surface-area of strong brine, that is, the effect of filler 9 is the surface-area that increase strong brine, to accelerate the evaporation of strong brine.The air-flow (this air-flow is provided by blower fan) that the through hole of padding support frame 10 allows the cooling steam in the chamber that is not condensed in the first circulation loop and carries this steam passes through, and, have in employing under the situation of pipeline section of heating unit, above-mentioned strong brine constantly can form solid residue after evaporation, and above-mentioned through hole can make solid residue fall.Here the solid residue of mentioning is strong brine evaporation post crystallization solid residue.
Further, above-mentioned solid residue can transport evaporator room 1 by spiral conveyer 12, and spiral conveyer 12 is arranged in evaporator room, be positioned at padding support frame 10 belows, and the discharge port of spiral conveyer 12 stretches out from evaporator room 1.
In a preferred embodiment, handling object is: temperature is 40-90 DEG C, and when specific conductivity is strong brines more than 60000 μ s/cm, because this strong brine produces water vapor at 40-90 DEG C, so the working temperature of this device can not exceed 90 DEG C (even have under the situation of the pipeline section with heating unit, heating unit also can not be heated to exceed 90 DEG C by the air-flow of the heating unit of flowing through (or mixture of air-flow and steam)) just strong brine can be processed into crystalline solid residue, therefore, evaporator room 1, condensing chamber 2, the material of pipeline section 7 can be all plastics, this just makes strong brine treatment unit cost, lighten.Should be appreciated that, plastics are a kind of preferred materials, and other materials can be suitable for equally, but at least should ensure to have the erosion resistance to above-mentioned strong brine.
The description such as position relationship and material of nozzle 8 that above-mentioned evaporator room comprises, filler 9, padding support frame 10, spiral conveyer 12 etc., is applicable to each in the evaporator room of any amount.
Obviously,, according to above description, the device for the method provided by the invention can be referred to as low temperature closed loop vapo(u)rization system.Strong brine processing is carried out under low temperature closed loop environment.
Fig. 2 also shows valve 15 and 17 in addition, and in the time that valve 17 shut-off valves 15 are opened, pump 11 circulates strong brine between evaporator room and strong brine container (not shown).In the time that valve 17 is opened, can strong brine be supplied with from outside to strong brine container.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (4)

1. a method for treating strong brine for industrial discharge, is characterized in that, comprising:
Step 1: the strong brine that is 40-90 DEG C by temperature is sent into evaporator room;
Step 2: the water vapor that described strong brine is produced in described evaporator room, carries out from described evaporator room by air-flow;
Step 3: send into condensing chamber and be condensed into distilled water leaving air-flow described evaporator room, that carry described water vapor, described distilled water is sent to condensing chamber; And
Step 4: by returning to described evaporator room through the described air-flow being condensed into after distilled water, then return to described step 2, cyclically send evaporator room with the water vapor that described strong brine is produced in evaporator room and enter condensing chamber;
Step 5: in evaporator room, strong brine has produced crystal salt solid residue after iterative cycles evaporation, and described crystal salt solid residue is sent to described evaporator room;
In described step 4, the air-flow after described condensation process is just returning to described evaporator room after heating,
Wherein, the air-flow after described heating, in the temperature of described evaporator room, reaches and makes strong brine in described evaporator room produce the temperature of water vapor so that the interior strong brine of evaporator room can continue to produce steam;
Water-supply pipe (15) provides fluid to be evaporated to evaporator room, have bypass pipe in evaporator room arranged outside, bypass pipe is communicated with formation the second circulation loop with evaporator room, and bypass pipe is for vapour stream warp in evaporator room, and carry out heat exchange with the fluid to be evaporated in water-supply pipe
Described method is carried out all the time under the Working environment of 40-90 DEG C,
Wherein, if in step 3 not by steam total condensation, air-flow carries uncooled water vapor and returns to together evaporator room.
2. the method for treating strong brine of industrial discharge according to claim 1, is characterized in that,
Filler is set in evaporator room, described strong brine is attached on the outside surface of described filler to increase its evaporation area.
3. the method for treating strong brine of industrial discharge according to claim 1, is characterized in that,
In order to carry the air-flow of the water vapor producing in described evaporator room, provided by blower fan.
4. the method for treating strong brine of industrial discharge according to claim 1, is characterized in that,
In described step 1, strong brine is that specific conductivity is strong brine more than 60000 μ s/cm.
CN201310192582.3A 2013-05-22 2013-05-22 Industrially discharged strong brine treatment method Active CN103241785B (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102583602A (en) * 2012-03-30 2012-07-18 常熟南师大发展研究院有限公司 Device and method for utilizing air to achieve sea water desalination
CN202358986U (en) * 2011-12-02 2012-08-01 浙江大学舟山海洋研究中心 Solar multi-level spraying evaporation sea water desalting plant
CN202705075U (en) * 2012-08-02 2013-01-30 深圳市星源空间环境技术有限公司 Low-temperature evaporating, condensing and liquefying circulatory device

Family Cites Families (2)

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Publication number Priority date Publication date Assignee Title
JPS58159887A (en) * 1982-03-19 1983-09-22 Yoshimi Oshitari Aqueous pollutant treating apparatus of low-temperature heating type
CN100497190C (en) * 2007-07-05 2009-06-10 中国海洋大学 Low-position heat energy spray evaporation-multiple-effect distillation seawater desalination method and device

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
CN202358986U (en) * 2011-12-02 2012-08-01 浙江大学舟山海洋研究中心 Solar multi-level spraying evaporation sea water desalting plant
CN102583602A (en) * 2012-03-30 2012-07-18 常熟南师大发展研究院有限公司 Device and method for utilizing air to achieve sea water desalination
CN202705075U (en) * 2012-08-02 2013-01-30 深圳市星源空间环境技术有限公司 Low-temperature evaporating, condensing and liquefying circulatory device

Non-Patent Citations (1)

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Application publication date: 20130814

Assignee: Ningxia wanbangda Water Company Limited

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Contract record no.: 2016990000032

Denomination of invention: Industrially discharged strong brine treatment method

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