CN203159264U - Low-temperature multi-effect distillation seawater desalting system - Google Patents
Low-temperature multi-effect distillation seawater desalting system Download PDFInfo
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- CN203159264U CN203159264U CN2013200285219U CN201320028521U CN203159264U CN 203159264 U CN203159264 U CN 203159264U CN 2013200285219 U CN2013200285219 U CN 2013200285219U CN 201320028521 U CN201320028521 U CN 201320028521U CN 203159264 U CN203159264 U CN 203159264U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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- Y02A20/124—Water desalination
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Abstract
The utility model relates to the seawater desalting technical field, and in particular relates to a low-temperature multi-effect distillation seawater desalting system which is used for increasing the seawater concentrating rate. The low-temperature multi-effect distillation seawater desalting system comprises a plurality of evaporation units in series connection with a countercurrent sequence and a fair current sequence, a condenser which is communicated with the evaporation unit with the lowest operation temperature in the countercurrent sequence, a seawater feeding pipeline which is communicated with the condenser and a steam feeding pipeline which is communicated with the evaporation unit with the highest operation temperature in the fair current sequence as well as an inter-group pump which is arranged on an intergroup seawater pipeline. In the low-temperature multi-effect distillation seawater desalting system, the evaporation units in series connection are divided into the countercurrent sequence and the fair current sequence, the raw material seawater gradually enters the evaporation units with the operation temperature being gradually increased one by one in the countercurrent sequence to be evaporated and concentrated, and the evaporated and concentrated seawater gradually enters the evaporation units with the operation temperature being gradually decreased one by one in the fair current sequence to be further evaporated and concentrated, so that the seawater concentrating rate can be increased.
Description
Technical field
The utility model relates to field of sea water desalting technology, particularly a kind of low temperature multiple-effect distillation seawater desalination system.
Background technology
The low temperature multiple-effect distillation sea water desalting technology refers to that the high evaporation temperature of seawater is lower than 70 ℃ multi-effect distilling desalination techniques, be with a plurality of evaporator series, pass through repeatedly evaporation and condensation with a certain amount of steam input, and the vaporization temperature of the vaporizer that the vaporization temperature of the vaporizer of last effect is imitated greater than back one, thereby obtain being multiple times than the desalination process of the distilled water of quantity of steam.
Existing low temperature multiple-effect distillation seawater desalination system, in the low temperature multiple-effect distillation process, the seawater after concentrating directly discharging pollutes the environment, therefore, the sea water supply saltern after generally will concentrating further concentrates back salt manufacturing, the seawater enrichment factor is more high, and corresponding salt manufacturing cost is more low; But, when adopting existing low-temperature multi-effect sea water by distillation desalination system that seawater is desalinated processing, the seawater enrichment factor is lower, and is less thereby the salt manufacturing cost reduces.
The utility model content
The purpose of this utility model is to provide a kind of low temperature multiple-effect distillation seawater desalination system, is used for improving the seawater enrichment factor, reduces follow-up salt manufacturing cost.
To achieve these goals, the utility model provides following technical scheme:
A kind of low temperature multiple-effect distillation seawater desalination system comprises:
Evaporation group with a plurality of series connection of adverse current sequence and following current sequence, in described adverse current sequence, two adjacent evaporation groups are communicated with by seawaterline between group, and the concentrated seawater that the evaporation group that temperature is low is discharged enters a last evaporation group higher than this evaporation group temperature; The evaporation group that operating temperature is the highest in the described adverse current sequence is communicated with by the evaporation group that operating temperature is the highest in seawaterline and the described following current sequence between group, and the concentrated seawater of the evaporation group discharge that operating temperature is the highest from described adverse current sequence enters the highest evaporation group of operating temperature in the described following current sequence; In described following current sequence, two adjacent evaporation groups are communicated with by seawaterline between group, the concentrated seawater that the evaporation group that temperature is high is discharged enters the next one evaporation group lower than this evaporation group temperature, the concentrated seawater that the evaporation group that operating temperature is minimum in the described following current sequence is discharged is discharged system by the concentrated seawater discharge pipe, and the product water that each evaporation group produces is discharged system by product water discharge spout road;
The evaporation group that operating temperature is minimum in the condenser, the outlet of the raw material seawater of described condenser and described adverse current sequence is communicated with, the evaporation group connection of end in the steam inlet of described condenser and the described a plurality of evaporation groups of connecting;
The seawater feeding pipe that is communicated with described condenser;
The steam feed pipeline that is communicated with operating temperature is the highest in the described following current sequence evaporation group;
And seawaterline is provided with water pump between a group between each group.
Preferably, each described evaporation group comprises at least one single-effect evaporator.
Preferably, described vaporizer is shell and tube evaporator.
Further, first evaporator except the highest evaporation group of operating temperature in the described following current sequence, the respectively corresponding product water flash tank of all the other each single-effect evaporators, each described product water flash tank water-in is communicated with corresponding vaporizer product water out, each described product water flash tank steam outlet is communicated with corresponding vaporizer steam inlet, and all product water flash tanks are connected successively by product water discharge spout road.
Preferably, be arranged at the product water pump on the described product water discharge spout road, be arranged at the concentrated seawater pump on the described concentrated seawater discharge pipe.
Further, above-mentioned low temperature multiple-effect distillation seawater desalination system also comprises: the condensate line that is communicated with the first evaporator condensation-water drain of the evaporation group that operating temperature is the highest in the described following current sequence, and be arranged at condensate pump on the described condensate line.
Further, above-mentioned low temperature multiple-effect distillation seawater desalination system also comprises: be arranged at the water-water heat exchanger on the described seawater feeding pipe, and described water-water heat exchanger is communicated with described product water discharge spout road or described concentrated seawater discharge pipe also.
Further, above-mentioned low temperature multiple-effect distillation seawater desalination system also comprises: be communicated with described condenser steam outlet, be used for the vacuum extractor that the raw material seawater that enters described condenser is outgased.
Further, above-mentioned low temperature multiple-effect distillation seawater desalination system also comprises: be arranged at the auxiliary condenser on the pipeline that is communicated with the evaporation group that operating temperature is minimum in described condenser raw material seawater outlet and the described adverse current sequence, and described auxiliary condenser also with described a plurality of evaporation groups of connecting in the vapour outlet connection of terminal evaporation group.
Further, above-mentioned low temperature multiple-effect distillation seawater desalination system also comprises: be arranged at water pump between the effect on the pipeline of the evaporation group that operating temperature is minimum in the raw material seawater outlet that is communicated with described condenser and the described adverse current sequence.
Further, above-mentioned low temperature multiple-effect distillation seawater desalination system also comprises: be arranged at the heat pump on the described steam feed pipeline, the bleeding point of described heat pump is communicated with described condenser steam inlet.
Preferably, separated by one or several following current evaporation groups in the following current sequence between per two evaporation groups in the adverse current sequence.
The low temperature multiple-effect distillation seawater desalination system that the utility model provides, the evaporation group that comprises a plurality of series connection, wherein a part of evaporation group belongs to the adverse current sequence, another part evaporation group belongs to the following current sequence, preferably, separated by one or several evaporation groups in the following current sequence between per two evaporation groups in the adverse current sequence.During use, raw material steam enters in the first evaporator of the evaporation group that operating temperature is the highest in the following current sequence by the steam feed pipeline, with enter seawater to make heat exchange in this vaporizer, the secondary steam of discharging from first vaporizer enters down 1st effective evaporator, with the seawater to make heat exchange that enters in this single-effect evaporator, the secondary steam that produces enters down in the 1st effective evaporator, and the rest may be inferred; Raw material seawater enters the evaporation group that operating temperature is minimum in the adverse current sequence after the condenser preheating, the concentrated seawater that produces after evaporating and concentrating is by entering a last evaporation group higher than this evaporation group temperature in the adverse current sequence after the water pump lifting between group, the rest may be inferred, the concentrated seawater that operating temperature is the highest in the adverse current sequence evaporation group is discharged is by entering the highest evaporation group of operating temperature in the following current sequence after the water pump lifting between group, through evaporation with concentrate concentrated seawater that the back produces and entered in the following current sequence next evaporation group or directly discharged system by the concentrated seawater discharge pipe by water pump lifting between organizing.
In the utility model, be following current sequence and adverse current sequence with a plurality of cascade evaporation components, raw material seawater is according to the order of adverse current sequence, enter each evaporation group that operating temperature raises gradually in the adverse current sequence step by step, concentrated seawater after evaporation concentration is according to the order of following current sequence, enter each evaporation group evaporation concentration that operating temperature reduces gradually in the following current sequence step by step, last concentrated seawater is discharged system by the concentrated seawater discharge pipe, from such scheme as can be known, raw material seawater each evaporation group evaporation concentration that operating temperature raises gradually in the adverse current sequence earlier, further evaporation concentration is organized in each evaporation that operating temperature reduces gradually in the following current sequence again, has improved the seawater enrichment factor.In addition, in the utility model, raw material seawater each evaporation group that temperature raises gradually in the adverse current sequence promotes temperature, does not need the seawater preheating device, thereby can reduce the preparation cost of low temperature multiple-effect distillation seawater desalination system.
Description of drawings
The structural representation of a kind of low temperature multiple-effect distillation seawater desalination system that Fig. 1 provides for the utility model embodiment.
Reference numeral:
101 ~ 105: the evaporation group; 1 ~ 7:1 to 7 single-effect evaporator; 8: condenser; 9 ~ 14: flash tank; 15: heat pump; 16: water pump between effect; 17 ~ 20: water pump between group; 21: the concentrated seawater pump; 22: the product water pump; 23: condensate pump; 24: the steam feed pipeline; 25: the seawater feeding pipe; 26: the concentrated seawater discharge pipe; 27: product water discharge spout road; 28: the drip pipe road.
Embodiment
Existing low-temperature multiple-effect seawater desalination system is being desalinated seawater when handling, and the seawater enrichment factor is lower, and the salt manufacturing cost reduces less.
In view of this, the utility model provides a kind of improved technical scheme, be adverse current sequence and following current sequence with the evaporated components of a plurality of series connection in the low-temperature multiple-effect seawater desalination system, raw material seawater is according to the order of adverse current sequence, enter each evaporation group evaporation concentration that operating temperature raises gradually in the adverse current sequence step by step, concentrated seawater after evaporation concentration is according to the order of following current sequence, enter each evaporation that operating temperature reduces gradually in the following current sequence step by step and organize further evaporation concentration, thereby improved the seawater enrichment factor.
In order to make those skilled in the art better understand the technical solution of the utility model, below in conjunction with Figure of description the utility model embodiment is described in detail.
As shown in Figure 1, the utility model embodiment provides a kind of low temperature multiple-effect distillation seawater desalination system, comprising:
Evaporation group with a plurality of series connection of adverse current sequence and following current sequence, in the adverse current sequence, two adjacent evaporation groups are communicated with by seawaterline between group, and the concentrated seawater that the evaporation group that temperature is low is discharged enters a last evaporation group higher than this evaporation group temperature; The evaporation group that operating temperature is the highest in the adverse current sequence is communicated with by the evaporation group that operating temperature is the highest in seawaterline and the following current sequence between group, and the concentrated seawater of the evaporation group discharge that operating temperature is the highest from the adverse current sequence enters the highest evaporation group of operating temperature in the following current sequence; In the following current sequence, two adjacent evaporation groups are communicated with by seawaterline between group, the concentrated seawater that the evaporation group that temperature is high is discharged enters the next one evaporation group lower than this evaporation group temperature, the concentrated seawater that the evaporation group that operating temperature is minimum in the following current sequence is discharged is by concentrated seawater discharge pipe 26 discharge systems, and the product water that each evaporation group produces is by product water discharge spout road 27 discharge systems;
The evaporation group that operating temperature is minimum in the condenser 8, the outlet of the raw material seawater of condenser 8 and adverse current sequence is communicated with, the evaporation group connection of end in the steam inlet of condenser 8 and the described a plurality of evaporation groups of connecting;
The seawater feeding pipe 25 that is communicated with condenser 8;
The steam feed pipeline 24 that is communicated with operating temperature is the highest in the following current sequence evaporation group;
And seawaterline is provided with water pump between a group between each group.
In the present embodiment, comprise that with low temperature multiple-effect distillation seawater desalination system five evaporation groups are example, say in further detail, a kind of low temperature multiple-effect distillation seawater desalination system that this enforcement provides, the evaporation group 103 that comprises series connection, evaporation group 102, evaporation group 104, evaporation group 101 and evaporation group 105, the condenser 8 that is communicated with the vapour outlet of evaporation group 105, and the raw material seawater import of condenser 8 is communicated with seawater feeding pipe 25, the raw material seawater outlet of condenser 8 is communicated with the sea intake of evaporation group 101, the steam feed pipeline 24 that is communicated with evaporation group 103, and be arranged between the group that is communicated with evaporation group 101 and evaporation group 102 water pump 17 between the group on the seawaterline, be arranged between the group that is communicated with evaporation group 102 and evaporation group 103 water pump 18 between the group on the seawaterline, be arranged between the group that is communicated with evaporation group 103 and evaporation group 104 water pump 19 between the group on the seawaterline, be arranged between the group that is communicated with evaporation group 104 and evaporation group 105 water pump 20 between the group on the seawaterline, and be communicated with product water discharge spout road 27 with the product water out of each evaporation group, be communicated with concentrated seawater discharge pipe 26 with evaporation group 105; Wherein,
The evaporated components of a plurality of series connection is adverse current sequence and following current sequence, and wherein, evaporation group 101 and evaporation group 102 belong to the adverse current sequence, and evaporation group 103, evaporation group 104 and evaporation group 105 belong to the following current sequence.In the adverse current sequence, evaporation group 101 is the evaporation group that operating temperature is minimum in the adverse current sequence, is communicated with the raw material seawater import of condenser 8, and evaporation group 102 is the highest evaporation group of operating temperature in the adverse current sequence; That is to say that in the adverse current sequence, the operating temperature of evaporation group 101 and evaporation group 102 raises gradually.In the following current sequence, evaporation group 103 is communicated with steam feed pipeline 24 for the highest evaporation group of operating temperature in the following current sequence, and the operating temperature of evaporation group 105 is minimum.
When the low temperature multiple-effect distillation seawater desalination system that uses present embodiment to provide carries out the sea water desaltination processing, raw material seawater enters the evaporation that operating temperature is minimum in the adverse current sequence and organizes 101 evaporation concentration after condenser 8 preheatings, the concentrated seawater of discharging enters than evaporation and organizes further evaporation concentration in the high evaporation group 102 of 101 temperature, the concentrated seawater that evaporation group 102 is discharged enters evaporation concentration in the evaporation group 103 that operating temperature is the highest in the following current sequence, 104 evaporation concentration are organized in the concentrated seawater evaporation that evaporation group 103 is discharged, 105 evaporation concentration are organized in the concentrated seawater evaporation that evaporation group 104 is discharged, and the concentrated seawater that final evaporation group 105 is discharged is by concentrated seawater discharge pipe 26 discharge systems.
In the present embodiment, be following current sequence and adverse current sequence with a plurality of cascade evaporation components, raw material seawater is according to the order of adverse current sequence, enter each evaporation group that operating temperature raises gradually in the adverse current sequence step by step, concentrated seawater after evaporation concentration is according to the order of following current sequence, enter each evaporation group evaporation concentration that operating temperature reduces gradually in the following current sequence step by step, last concentrated seawater is discharged system by the concentrated seawater discharge pipe, from such scheme as can be known, raw material seawater each evaporation group evaporation concentration that operating temperature raises gradually in the adverse current sequence earlier, further evaporation concentration is organized in each evaporation that operating temperature reduces gradually in the following current sequence again, has improved the seawater enrichment factor.In addition, in the utility model, raw material seawater each evaporation group that temperature raises gradually in the adverse current sequence promotes temperature, does not need the seawater preheating device, thereby can reduce the preparation cost of low temperature multiple-effect distillation seawater desalination system.
Preferably, each evaporation group comprises at least one single-effect evaporator, and seawater or concentrated seawater also are advanced into each single-effect evaporator in the same evaporation group.As shown in Figure 1, in the present embodiment, low temperature multiple-effect distillation seawater desalination system comprises five evaporation groups, and wherein, evaporation group 101 comprises that two imitate vaporizer 5 and the vaporizer 6 of series connection, raw material seawater and be advanced into vaporizer 5 and vaporizer 6 in; Evaporation group 102 comprises that two imitate vaporizer 2 and the vaporizer 3 of series connection, the concentrated seawater of discharging from evaporation group 101 and be advanced into vaporizer 2 and vaporizer 3; Evaporation group 103 comprises 1st effective evaporator 1; Evaporation group 104 comprises 1st effective evaporator 4, and evaporation group 105 comprises 1st effective evaporator 7.
Preferably, above-mentioned vaporizer 1 ~ 7 is shell and tube evaporator; Raw material seawater or the preliminary seawater that concentrates enter in the vaporizer shell from water-in, raw material steam or secondary steam enter in the vaporizer heat-exchanging tube bundle from the steam inlet of vaporizer, carry out heat exchange with the raw material seawater or the preliminary seawater that concentrates that enter in the vaporizer shell, form product water after the condensation and discharge system; Seawater after concentrating enters down 1st effective evaporator or discharge system.
Further, first evaporator 1 except the highest evaporation group 103 of operating temperature in the following current sequence, the respectively corresponding product water flash tank of all the other each single-effect evaporators, each product water flash tank water-in is communicated with corresponding vaporizer product water out, each product water flash tank steam outlet is communicated with corresponding vaporizer steam inlet, and all product water flash tanks are connected successively by product water discharge spout road 27.Continuation is referring to as Fig. 1, in the present embodiment, product water flash tank 9 is communicated with corresponding vaporizer 2, product water flash tank 10 is communicated with corresponding vaporizer 3, product water flash tank 11 is communicated with corresponding vaporizer 4, product water flash tank 12 is communicated with corresponding vaporizer 5, product water flash tank 13 and corresponding vaporizer 6 connections, product water flash tank 14 and corresponding vaporizer 7 connections; Above-mentioned each product water flash tank is by 27 series connection of product water discharge spout road.After final all product water is pooled to flash tank 14, discharge system by 22 liftings of product water pump and as product water.
Preferably, be arranged at the product water pump 22 on the product water discharge spout road 27, be arranged at the concentrated seawater pump 21 on the concentrated seawater discharge pipe 26.
As shown in Figure 1, the water of condensation of discharging because of vaporizer 1 mainly is that the external world provides the vapor condensation product, wherein may contain other materials, for the product water water quality of raising system discharge.Further, above-mentioned low temperature multiple-effect distillation seawater desalination system also comprises: the condensate line 28 that is communicated with first evaporator 1 condensation-water drain of the evaporation group 103 that operating temperature is the highest in the following current sequence, and be arranged at condensate pump 23 on the condensate line 28.
In order to improve the temperature of raw material seawater, further, above-mentioned low temperature multiple-effect distillation seawater desalination system also comprises: be arranged at the water-water heat exchanger on the seawater feeding pipe 25, and water-water heat exchanger is communicated with product water discharge spout road 27 or concentrated seawater discharge pipe 26 also.
In order to reduce in the seawater gas to the corrosion of each pipeline and vaporizer in the system, further, above-mentioned low temperature multiple-effect distillation seawater desalination system also comprises: be communicated with condenser 8 steam outlets, be used for the vacuum extractor (not drawing among the figure) that the raw material seawater that enters condenser 8 is outgased.Can remove gases such as oxygen in the raw material seawater, carbonic acid gas by vacuum extractor, be also referred to as the degassing, can reduce these gases to the corrosion of low-temperature multiple-effect seawater desalination system, prolong the work-ing life of low temperature multiple-effect distillation seawater desalination system.
Advance condenser 8 condition of overhigh temperature before for raw material seawater, further, above-mentioned low temperature multiple-effect distillation seawater desalination system also comprises: be arranged at the auxiliary condenser on the pipeline that is communicated with the evaporation group that operating temperature is minimum in described condenser raw material seawater outlet and the described adverse current sequence, and described auxiliary condenser also with a plurality of evaporation groups of connecting in terminal evaporation organize 105 vapour outlets and be communicated with, namely with a plurality of evaporation groups of connecting in the vapour outlet of last evaporation group be communicated with, so arrange, can utilize extra water coolant to absorb the unnecessary secondary steam heat that vaporizer 7 produces, the raw material seawater temperature of discharging with control condenser 8 is in reasonable level.
For the raw material seawater of discharging from condenser 8 is entered the evaporation group 101 smoothly, further, above-mentioned low temperature multiple-effect distillation seawater desalination system also comprises: be arranged at water pump 16 between the effect on the pipeline of the evaporation group 101 that operating temperature is minimum in the raw material seawater outlet that is communicated with condenser 8 and the adverse current sequence.
When the vapor pressure that provides when the external world was higher, preferably, above-mentioned low temperature multiple-effect distillation seawater desalination system also comprises: be arranged at the heat pump 15 on the steam feed pipeline 24, the bleeding point of heat pump 15 was communicated with condenser 8 steam inlets; Preferably, heat pump 15 is the thermo compression injector.Steam behind the mixing portion secondary steam, enters vaporizer 1 by heat pump 15, after being condensed, promotes the back by condensate pump 23 and discharges.The vapor pressure that provides when the external world is lower, can select the steam suction port of heat pump 15 is installed on other vaporizers, and the secondary steam that absorption pressure is higher is to obtain higher ejection efficiency.
Preferably, separated by one or several following current evaporation groups in the following current sequence between per two evaporation groups in the adverse current sequence.In the present embodiment, the adverse current sequence comprises evaporation group 101 and evaporation group 102, and the following current sequence comprises evaporation group 103, evaporation group 104 and evaporation group 105, and evaporation group 101 and evaporation group 102 are separated by evaporation group 104 in the following current sequence in the adverse current sequence.So arrange, can make that evaporation group 101 and evaporation group 102 have a bigger temperature head in the adverse current sequence, thereby improve the seawater enrichment factor.
In sum, in the utility model, be following current sequence and adverse current sequence with a plurality of cascade evaporation components, raw material seawater is according to the order of adverse current sequence, enter each evaporation group that operating temperature raises gradually in the adverse current sequence step by step, concentrated seawater after evaporation concentration is according to the order of following current sequence, enter each evaporation group evaporation concentration that operating temperature reduces gradually in the following current sequence step by step, last concentrated seawater is discharged system by the concentrated seawater discharge pipe, from such scheme as can be known, raw material seawater each evaporation group evaporation concentration that operating temperature raises gradually in the adverse current sequence earlier, further evaporation concentration is organized in each evaporation that operating temperature reduces gradually in the following current sequence again, has improved the seawater enrichment factor.In addition, in the utility model, raw material seawater each evaporation group that temperature raises gradually in the adverse current sequence promotes temperature, does not need the seawater preheating device, thereby can reduce the preparation cost of low temperature multiple-effect distillation seawater desalination system.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (12)
1. a low temperature multiple-effect distillation seawater desalination system is characterized in that, comprising:
Evaporation group with a plurality of series connection of adverse current sequence and following current sequence, in described adverse current sequence, two adjacent evaporation groups are communicated with by seawaterline between group, and the concentrated seawater that the evaporation group that temperature is low is discharged enters a last evaporation group higher than this evaporation group temperature; The evaporation group that operating temperature is the highest in the described adverse current sequence is communicated with by the evaporation group that operating temperature is the highest in seawaterline and the described following current sequence between group, and the concentrated seawater of the evaporation group discharge that operating temperature is the highest from described adverse current sequence enters the highest evaporation group of operating temperature in the described following current sequence; In described following current sequence, two adjacent evaporation groups are communicated with by seawaterline between group, the concentrated seawater that the evaporation group that temperature is high is discharged enters the next one evaporation group lower than this evaporation group temperature, the concentrated seawater that the evaporation group that operating temperature is minimum in the described following current sequence is discharged is discharged system by the concentrated seawater discharge pipe, and the product water that each evaporation group produces is discharged system by product water discharge spout road;
The evaporation group that operating temperature is minimum in the condenser, the outlet of the raw material seawater of described condenser and described adverse current sequence is communicated with, the evaporation group connection of end in the steam inlet of described condenser and the described a plurality of evaporation groups of connecting;
The seawater feeding pipe that is communicated with described condenser;
The steam feed pipeline that is communicated with operating temperature is the highest in the described following current sequence evaporation group;
And seawaterline is provided with water pump between a group between each group.
2. low temperature multiple-effect distillation seawater desalination system as claimed in claim 1 is characterized in that, each described evaporation group comprises at least one single-effect evaporator.
3. low temperature multiple-effect distillation seawater desalination system as claimed in claim 2 is characterized in that, described vaporizer is shell and tube evaporator.
4. low temperature multiple-effect distillation seawater desalination system as claimed in claim 3, it is characterized in that, first evaporator except the highest evaporation group of operating temperature in the described following current sequence, the respectively corresponding product water flash tank of all the other each single-effect evaporators, each described product water flash tank water-in is communicated with corresponding vaporizer product water out, each described product water flash tank steam outlet is communicated with corresponding vaporizer steam inlet, and all product water flash tanks are connected successively by product water discharge spout road.
5. low temperature multiple-effect distillation seawater desalination system as claimed in claim 4 is characterized in that, is arranged at the product water pump on the described product water discharge spout road, is arranged at the concentrated seawater pump on the described concentrated seawater discharge pipe.
6. low temperature multiple-effect distillation seawater desalination system as claimed in claim 4, it is characterized in that, also comprise: the condensate line that is communicated with the first evaporator condensation-water drain of the evaporation group that operating temperature is the highest in the described following current sequence, and be arranged at condensate pump on the described condensate line.
7. low temperature multiple-effect distillation seawater desalination system as claimed in claim 4, it is characterized in that, also comprise: be arranged at the water-water heat exchanger on the described seawater feeding pipe, and described water-water heat exchanger is communicated with described product water discharge spout road or described concentrated seawater discharge pipe also.
8. low temperature multiple-effect distillation seawater desalination system as claimed in claim 1 is characterized in that, also comprises: be communicated with described condenser steam outlet, be used for the vacuum extractor that the raw material seawater that enters described condenser is outgased.
9. low temperature multiple-effect distillation seawater desalination system as claimed in claim 1, it is characterized in that, also comprise: be arranged at the auxiliary condenser on the pipeline that is communicated with the evaporation group that operating temperature is minimum in described condenser raw material seawater outlet and the described adverse current sequence, and described auxiliary condenser also with described a plurality of evaporation groups of connecting in the vapour outlet connection of terminal evaporation group.
10. low temperature multiple-effect distillation seawater desalination system as claimed in claim 1 is characterized in that, also comprises: be arranged at water pump between the effect on the pipeline of the evaporation group that operating temperature is minimum in the raw material seawater outlet that is communicated with described condenser and the described adverse current sequence.
11. low temperature multiple-effect distillation seawater desalination system as claimed in claim 1 is characterized in that, also comprises: be arranged at the heat pump on the described steam feed pipeline, the bleeding point of described heat pump is communicated with described condenser steam inlet.
12. as the arbitrary described low temperature multiple-effect distillation seawater desalination system of claim 1-11, it is characterized in that, separated by one or several following current evaporation groups in the following current sequence between per two evaporation groups in the adverse current sequence.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013200285219U CN203159264U (en) | 2013-01-18 | 2013-01-18 | Low-temperature multi-effect distillation seawater desalting system |
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| CN2013200285219U CN203159264U (en) | 2013-01-18 | 2013-01-18 | Low-temperature multi-effect distillation seawater desalting system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103073079A (en) * | 2013-01-18 | 2013-05-01 | 中国电子工程设计院 | Low-temperature multi-effect distillation seawater desalination system |
| CN105692750A (en) * | 2016-03-04 | 2016-06-22 | 华北电力大学 | Multiple-effect distillation seawater desalination system adopting power station waste heat |
| CN105712423A (en) * | 2016-03-04 | 2016-06-29 | 华北电力大学 | MED-TVC seawater desalination combination system by means of power station waste heat |
-
2013
- 2013-01-18 CN CN2013200285219U patent/CN203159264U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103073079A (en) * | 2013-01-18 | 2013-05-01 | 中国电子工程设计院 | Low-temperature multi-effect distillation seawater desalination system |
| CN105692750A (en) * | 2016-03-04 | 2016-06-22 | 华北电力大学 | Multiple-effect distillation seawater desalination system adopting power station waste heat |
| CN105712423A (en) * | 2016-03-04 | 2016-06-29 | 华北电力大学 | MED-TVC seawater desalination combination system by means of power station waste heat |
| CN105712423B (en) * | 2016-03-04 | 2018-07-31 | 华北电力大学 | Utilize the MED-TVC seawater desalination combined systems of surplus heat of power plant |
| CN105692750B (en) * | 2016-03-04 | 2018-07-31 | 华北电力大学 | A kind of multiple-effect distillation seawater desalination system using surplus heat of power plant |
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