CN110183017A - A kind of multiple-effect evaporation technique of strong brine zero-emission - Google Patents
A kind of multiple-effect evaporation technique of strong brine zero-emission Download PDFInfo
- Publication number
- CN110183017A CN110183017A CN201910389197.5A CN201910389197A CN110183017A CN 110183017 A CN110183017 A CN 110183017A CN 201910389197 A CN201910389197 A CN 201910389197A CN 110183017 A CN110183017 A CN 110183017A
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- Prior art keywords
- effect
- inspissator
- crystallization
- steam
- strong brine
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/08—Thin film evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Mechanical Engineering (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a kind of multiple-effect evaporation techniques of strong brine zero-emission, material successively crystallizes inspissator by an effect after preheating, two effect crystallization inspissators, concentration is evaporated by steam in triple effect crystallization inspissator, it is discharged in thickener outside after reaching predetermined concentration, passing through centrifuge, isolate the sodium sulphate of solid, sodium chloride, centrifuge mother liquor turns again to triple effect crystallization inspissator and continues with, the secondary steam that one effect crystallization inspissator of steam jet heat pump compression issues, reduce the pressure and dosage of raw steam, it is equivalent to the energy-saving effect for increasing by an effect crystallization inspissator, the condensed water and secondary steam that preheater utilizes device to generate, the heat of entire technique is fully utilized, it economizes on resources, entire technique uses triple effect TVR+ centrifugal separation process technology, forced-circulation evaporation crystallization processes, it is high to turn hot coefficient, it is anti- Fouling is not easy to plug, stabilization easy to operate.
Description
Technical field
The invention belongs to sewage treatment environment protection field more particularly to a kind of multiple-effect evaporation techniques of strong brine zero-emission.
Background technique
High-salt wastewater refers to the waste water always containing salt quality at least 1%, mainly from adopting for chemical plant and oil and natural gas
The processes such as collection processing.The substances such as various salts, organic matter are mainly contained in this waste water, processing difficulty is larger, if directly arranged
It puts, serious pollution can be caused to environment and water body.In addition to containing organic contamination beyond the region of objective existence in these waste water, also containing a large amount of
Inorganic salts, these with high salt, high organic wastewaters will certainly be to aqueous bios, Drinking Water if untreated direct emission
Greatly harm is generated with industrial and agricultural production water, reasonable and optimization processing high-salt wastewater, is each enterprise and chemical industry environmental protection
The corporation responsibility and obligation of personage.
For the zero discharge treatment of high strong brine, most effective, most thorough solution is exactly to use evaporative crystallization technique
Accomplish that salt water separates, realizes that water fully recovering, sub-prime generate sodium sulphate, three kinds of sodium chloride, sodium nitrate crystal salt whole recyclings
It utilizes.
Summary of the invention
In view of the above deficiencies, the present invention provides a kind of multiple-effect evaporation techniques of strong brine zero-emission, using triple effect TVR+
Centrifugal separation process technology, forced-circulation evaporation crystallization processes turn hot coefficient height, environmental protection and energy saving.
The present invention is achieved by the following technical solutions: a kind of multiple-effect evaporation technique of strong brine zero-emission, feature
Be: the technique the following steps are included:
25 DEG C of material, which fills to enter in preheater by charging, in S1, preamble process carries out the pre-heat treatment；
S2, by the pre-heat treatment, after so that material liquid is reached evaporating temperature, into being changed in an effect crystallization inspissator with steam
Heat, material is evaporated concentration in the process, evaporates 8831 kg/h moisture；
S3, the secondary steam a part for imitating crystallization inspissator generation can be extracted by steam jet pump after mixing with raw steam, into
Enter in effect crystallization inspissator, another part enters two effects and crystallizes inspissator；
S4, the material after an effect crystallization inspissator concentration enter in two effect crystallization inspissators through an effect discharging pump, evaporate
3073 kg/h moisture, two effect crystallization inspissators generate secondary steam and enter triple effect crystallization inspissator；
Material in S5, two effect crystallization inspissators enters in triple effect crystallization inspissator through two effect discharging pumps, evaporates 2616 kg/h
Moisture enters thickener through triple effect discharging pump through material, and two effect crystallization inspissators generate secondary steam and enter in condenser；
S6, material carry out thickening processing in thickener, after reaching predetermined concentration, drain into centrifuge centrifugation outside, isolate solid
Sodium sulphate, the sodium chloride of body, centrifuge mother liquor turn again to triple effect crystallization inspissator and continue with.
As a preferred technical solution of the present invention, after secondary steam enters condenser formation condensed water in step S4,
The preheater in S1 is entered step by condensate pump, is sent system after being exchanged heat with material.
As a preferred technical solution of the present invention, the effect discharging pump, two effect discharging pumps, triple effect discharging pump are adopted
Use unshrouded impeller.
As a preferred technical solution of the present invention, the exit of the steam jet pump is equipped with spray equipment.
As a preferred technical solution of the present invention, the preheater is tube-sheet type preheater, the crystallization concentration of one ~ triple effect
Device includes shell and tube falling film evaporator and tangent line cyclone separator.
Compared with prior art, the invention has the benefit that (1) utilizes one effect crystallization concentration of steam jet heat pump compression
The secondary steam that device issues, is mixed into 120 DEG C or so of life steam, reduces the pressure and dosage of raw steam, be equivalent to increase
The energy-saving effect of one effect crystallization inspissator, has saved steam consumption；(2) condensed water and secondary steaming of the preheater using device generation
The heat of vapour, entire technique is fully utilized, and economizes on resources；(3) triple effect TVR+ centrifugal separation process technology is used, is forced
Circulating and evaporating crystallization processes turn hot coefficient height, good antiscale property, are not easy to plug, stabilization easy to operate.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Specific embodiment
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated, it should be understood that following specific embodiments are only
For illustrating the present invention rather than limiting the scope of the invention.It should be noted that word " preceding " used in the following description,
" rear ", "left", "right", "up" and "down" refer to that the direction in attached drawing, word "inner" and "outside" refer respectively to direction or remote
Direction from geometric center of specific component.
A kind of multiple-effect evaporation technique of strong brine zero-emission as shown in Figure 1, the technique the following steps are included:
25 DEG C of material, which fills to enter in preheater by charging, in S1, preamble process carries out the pre-heat treatment；
S2, by the pre-heat treatment, after so that material liquid is reached evaporating temperature, into being changed in an effect crystallization inspissator with steam
Heat, material is evaporated concentration in the process, evaporates 8831 kg/h moisture；
S3, the secondary steam a part for imitating crystallization inspissator generation can be extracted by steam jet pump after mixing with raw steam, into
Enter in effect crystallization inspissator, another part enters two effects and crystallizes inspissator；
Preferably as of the invention one, the exit of the steam jet pump is equipped with spray equipment, and raw steam and steam spray
After the secondary steam mixing that the effect of extraction section one crystallization inspissator comes out in pump, through shower water spraying cooling, steam superheating is eliminated,
Mixed vapour enters in the heater in an effect crystallization inspissator as an effect heat source.
S4, the material after an effect crystallization inspissator concentration enter in two effect crystallization inspissators through an effect discharging pump, steam
Hair falls 3073 kg/h moisture, and two effect crystallization inspissators generate secondary steam and enter triple effect crystallization inspissator；
Preferably as of the invention one, after secondary steam enters condenser formation condensed water in step S4, by condensate pump
The preheater in S1 is entered step, is sent system after being exchanged heat with material,
Material in S5, two effect crystallization inspissators enters in triple effect crystallization inspissator through two effect discharging pumps, evaporates 2616 kg/h
Moisture enters thickener through triple effect discharging pump through material, and two effect crystallization inspissators generate secondary steam and enter in condenser；
S6, material carry out thickening processing in thickener, after reaching predetermined concentration, drain into centrifuge centrifugation outside, isolate solid
Sodium sulphate, the sodium chloride of body, centrifuge mother liquor turn again to triple effect crystallization inspissator and continue with.
Preferably as of the invention one, the effect discharging pump, two effect discharging pumps, triple effect discharging pump are all made of open type leaf
Wheel, it is not easy to cause feed blocking.
Preferably as of the invention one, the preheater is tube-sheet type preheater, and one ~ triple effect crystallization inspissator includes
Shell and tube falling film evaporator and tangent line cyclone separator.
The present invention provides a kind of multiple-effect evaporation techniques of strong brine zero-emission, using triple effect TVR+ centrifugal separation process skill
Art, forced-circulation evaporation crystallization processes turn hot coefficient height, good antiscale property, are not easy to plug, and stabilization easy to operate is sprayed using steam
The secondary steam that one effect crystallization inspissator of heat pump compression issues, is mixed into 120 DEG C or so of life steam, reduces the pressure of raw steam
Power and dosage are equivalent to the energy-saving effect for increasing by an effect crystallization inspissator, have saved steam consumption, what pre- heat utilization device generated
The heat of condensed water and secondary steam, entire technique is fully utilized, and economizes on resources.
Finally, it should be noted that being not intended to restrict the invention the foregoing is merely preferred embodiment of the invention, to the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, for those skilled in the art, still can be with
It modifies the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in guarantor of the invention
Within the scope of shield.
Claims (5)
1. a kind of multiple-effect evaporation technique of strong brine zero-emission, it is characterised in that: the technique the following steps are included:
25 DEG C of material, which fills to enter in preheater by charging, in S1, preamble process carries out the pre-heat treatment；
S2, by the pre-heat treatment, after so that material liquid is reached evaporating temperature, into being changed in an effect crystallization inspissator with steam
Heat, material is evaporated concentration in the process, evaporates 8831 kg/h moisture；
S3, the secondary steam a part for imitating crystallization inspissator generation can be extracted by steam jet pump after mixing with raw steam, into
Enter in effect crystallization inspissator, another part enters two effects and crystallizes inspissator；
S4, the material after an effect crystallization inspissator concentration enter in two effect crystallization inspissators through an effect discharging pump, evaporate
3073 kg/h moisture, two effect crystallization inspissators generate secondary steam and enter triple effect crystallization inspissator；
Material in S5, two effect crystallization inspissators enters in triple effect crystallization inspissator through two effect discharging pumps, evaporates 2616 kg/h
Moisture enters thickener through triple effect discharging pump through material, and two effect crystallization inspissators generate secondary steam and enter in condenser；
S6, material carry out thickening processing in thickener, after reaching predetermined concentration, drain into centrifuge centrifugation outside, isolate solid
Sodium sulphate, the sodium chloride of body, centrifuge mother liquor turn again to triple effect crystallization inspissator and continue with.
2. the multiple-effect evaporation technique of strong brine zero-emission according to claim 1, it is characterised in that: secondary steaming in step S4
After vapour enters condenser formation condensed water, the preheater in S1 is entered step by condensate pump, quilt after being exchanged heat with material
Transmitting system.
3. the multiple-effect evaporation technique of strong brine zero-emission according to claim 1, it is characterised in that: the effect discharging
Pump, two effect discharging pumps, triple effect discharging pump are all made of unshrouded impeller.
4. the multiple-effect evaporation technique of strong brine zero-emission according to claim 1, it is characterised in that: the steam jet pump
Exit be equipped with spray equipment.
5. the multiple-effect evaporation technique of strong brine zero-emission according to claim 1, it is characterised in that: the preheater is pipe
Plate type preheater, it includes shell and tube falling film evaporator and tangent line cyclone separator that one ~ triple effect, which crystallizes inspissator,.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910389197.5A CN110183017A (en) | 2019-05-10 | 2019-05-10 | A kind of multiple-effect evaporation technique of strong brine zero-emission |
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| CN201910389197.5A CN110183017A (en) | 2019-05-10 | 2019-05-10 | A kind of multiple-effect evaporation technique of strong brine zero-emission |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112174413A (en) * | 2020-09-01 | 2021-01-05 | 上海易湃富得环保科技有限公司 | Method for realizing zero discharge of MVR evaporation mother liquor |
| CN115006857A (en) * | 2022-06-30 | 2022-09-06 | 广西埃索凯循环科技有限公司 | Intermittent evaporative crystallization device and process adopting two-effect parallel evaporation |
Citations (5)
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|---|---|---|---|---|
| CN101745241A (en) * | 2009-12-31 | 2010-06-23 | 南京航空航天大学 | Method and device for producing calcium chloride solution through concentration |
| CN204582600U (en) * | 2015-04-23 | 2015-08-26 | 石家庄鼎威化工设备工程有限公司 | Ammonium chloride dedicated evaporation crystallization apparatus |
| CN204689804U (en) * | 2015-02-05 | 2015-10-07 | 湖州展望天明药业有限公司 | High salt high concentration cellulose ether Sewage treatment systems |
| CN204841010U (en) * | 2015-06-30 | 2015-12-09 | 江苏嘉泰蒸发结晶设备有限公司 | Forced circulation's sodium sulphate evaporation crystallization device |
| CN107137946A (en) * | 2017-05-16 | 2017-09-08 | 江苏沃德托普热力科技有限公司 | A kind of amine wastewater of sulphuric acid low-temperature evaporation crystallization apparatus and technique |
-
2019
- 2019-05-10 CN CN201910389197.5A patent/CN110183017A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101745241A (en) * | 2009-12-31 | 2010-06-23 | 南京航空航天大学 | Method and device for producing calcium chloride solution through concentration |
| CN204689804U (en) * | 2015-02-05 | 2015-10-07 | 湖州展望天明药业有限公司 | High salt high concentration cellulose ether Sewage treatment systems |
| CN204582600U (en) * | 2015-04-23 | 2015-08-26 | 石家庄鼎威化工设备工程有限公司 | Ammonium chloride dedicated evaporation crystallization apparatus |
| CN204841010U (en) * | 2015-06-30 | 2015-12-09 | 江苏嘉泰蒸发结晶设备有限公司 | Forced circulation's sodium sulphate evaporation crystallization device |
| CN107137946A (en) * | 2017-05-16 | 2017-09-08 | 江苏沃德托普热力科技有限公司 | A kind of amine wastewater of sulphuric acid low-temperature evaporation crystallization apparatus and technique |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112174413A (en) * | 2020-09-01 | 2021-01-05 | 上海易湃富得环保科技有限公司 | Method for realizing zero discharge of MVR evaporation mother liquor |
| CN115006857A (en) * | 2022-06-30 | 2022-09-06 | 广西埃索凯循环科技有限公司 | Intermittent evaporative crystallization device and process adopting two-effect parallel evaporation |
| CN115006857B (en) * | 2022-06-30 | 2024-02-13 | 广西埃索凯循环科技有限公司 | Intermittent evaporation crystallization device and process adopting two-effect parallel evaporation |
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Application publication date: 20190830 |