CN103073141B - Low-temperature multi-effect distilled seawater desalination system with variable effect groups - Google Patents
Low-temperature multi-effect distilled seawater desalination system with variable effect groups Download PDFInfo
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- CN103073141B CN103073141B CN201310009990.0A CN201310009990A CN103073141B CN 103073141 B CN103073141 B CN 103073141B CN 201310009990 A CN201310009990 A CN 201310009990A CN 103073141 B CN103073141 B CN 103073141B
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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
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Abstract
The invention relates to the technical field of seawater desalination, in particular to a low-temperature multi-effect distilled seawater desalination system with variable effect groups, which is used for improving the adaptability of the low-temperature multi-effect distilled seawater desalination system. The invention discloses the low-temperature multi-effect distilled seawater desalination system with variable effect groups, which comprises a condenser and various-effect evaporators that are connected in series sequentially, a steam pipeline used for connecting a raw material seawater source, a raw material steam source, various-effect evaporators with the condenser, a seawater feeding pipeline, a concentrated seawater discharging pipeline, a product water discharging pipeline, a concentrated seawater conveying pipeline, a concentrated seawater return pipeline and a concentrated seawater pipeline as well as control valves arranged on the pipelines.
Description
Technical field
The present invention relates to field of sea water desalting technology, specially refer to a kind of low temperature multiple-effect distillation seawater desalination system of variable effect group.
Background technology
The high evaporation temperature that low temperature multiple-effect distillation sea water desalting technology typically refers to seawater is lower than the desalination technology of 70 ℃, low temperature multiple-effect distillation seawater desalination system is that a series of evaporator series is got up to form different evaporation groups, with a certain amount of steam and seawater, be input in the evaporimeter of series connection, in evaporimeter, steam and seawater carry out heat exchange, make seawater evaporation and condensation repeatedly, thereby obtain being multiple times than the desalination process of the distilled water of quantity of steam.The low temperature multiple-effect distillation sea water service system adopting at present can be divided into by flow process: following current, adverse current and advection flow process.Seawater adds from high temperature effect, and successively through each effect, and concentrated seawater is discharged as following current flow process from lowest temperature effect; Seawater adds from low temperature effect, and each effect is crossed in reverse flow, and concentrated seawater is discharged as countercurrent flow from high temperature effect; Seawater adds from each effect respectively, and concentrated seawater is discharged as advection flow process from this effect.
The defect that prior art exists is, existing low temperature multiple-effect distillation seawater desalination system is after assembling, evaporation group number is fixing can not be changed, the needs that cannot adapt to different Seawater Treatment, when the number of evaporation group need to change, can only reconstruct new low temperature multiple-effect distillation seawater desalination system, adaptability is lower.
Summary of the invention
The object of the present invention is to provide a kind of low temperature multiple-effect distillation seawater desalination system of variable effect group, in order to improve the adaptability of low temperature multiple-effect distillation seawater desalination system.
To achieve these goals, the invention provides following technical scheme:
A low temperature multiple-effect distillation seawater desalination system for variable effect group, comprising:
The condenser being communicated with raw material seawater source;
The jet chimney being communicated with raw material vapour source, and be arranged on the heat pump on described jet chimney;
The evaporation group of at least two series connection, described each evaporation group comprises the evaporimeter of at least two effect series connection, wherein, the evaporation group being communicated with the air inlet of described condenser is tail evaporation group, evaporation group headed by the evaporation group being communicated with described jet chimney; The evaporimeter being communicated with adjacent evaporation group in described first evaporation group is last evaporator;
Imitate with each the charging seawater pipeline that described evaporimeter seawater water inlet and described condenser seawater delivery port are communicated with respectively, and be arranged on described charging seawater pipeline and the control valve corresponding with described each evaporation group and every 1st effective evaporator seawater water inlet respectively;
Imitate with each the product water discharge tube that described evaporimeter product water delivery port and described condenser product water delivery port are communicated with respectively;
The concentrated seawater discharge tube being communicated with described last evaporator seawater delivery port;
Respectively with the seawater delivery port of each evaporimeter in each effect evaporation group except head evaporation group and the concentrated seawater conveyance conduit that charging seawater pipeline is communicated with, and be arranged on the control valve on each described concentrated seawater conveyance conduit;
The concentrated seawater reflux line being communicated with seawater delivery port and the described charging seawater pipeline of described last evaporator, and be arranged on the control valve on described concentrated seawater reflux line;
The concentrated seawater pipeline being communicated with described each concentrated seawater conveyance conduit and described concentrated seawater reflux line, and be arranged on the control valve on each described concentrated seawater pipeline.
Preferably, the low temperature multiple-effect distillation seawater desalination system of described variable effect group also comprises: be communicated with described condenser gas outlet, for carrying out degassed vacuum extractor to entering the raw material seawater of described condenser.
Preferably, described evaporimeter is shell-and-tube heat exchanger.
Preferably, described heat pump is hot compression injector.
The gas outlet of the evaporimeter that preferably, described heat pump is also communicated with described condenser is communicated with.
Preferably, the low temperature multiple-effect distillation seawater desalination system of described variable effect group also comprises: the Mare Frigoris water discharge spout road being communicated with described condenser seawater delivery port and described charging seawater pipeline.
Preferably, the low temperature multiple-effect distillation seawater desalination system of described variable effect group also comprises: be arranged on the middle charge pump on each described concentrated seawater conveyance conduit;
Be arranged on the concentrated seawater pump on described concentrated seawater discharge tube;
Be arranged on the product water pump on described product water discharge tube;
Be arranged on the sea water pump of the seawater water inlet of described condenser;
Be arranged on the pan feeding sea water pump on described charging seawater pipeline;
Be arranged on the cooling sea water pump on described Mare Frigoris water discharge spout road.
Preferably, except the evaporimeter being communicated with described condenser, the all corresponding fresh water flash tank of every 1st effective evaporator, described in each, fresh water flash tank water inlet is communicated with the product water outlet of corresponding evaporimeter, and each fresh water flash tank is connected by described product water discharge tube.
Preferably, except head evaporation group, each evaporimeter of each effect evaporation group is a corresponding concentrated seawater flash tank respectively, and the gas outlet of described concentrated seawater flash tank is communicated with the gas outlet of corresponding evaporimeter respectively, and described concentrated seawater flash tank is connected by described concentrated seawater discharge tube.
The low temperature multiple-effect distillation seawater desalination system of variable effect group provided by the invention, comprise: the condenser of connecting successively and each single-effect evaporator, the jet chimney that raw material seawater source, raw material vapour source, each single-effect evaporator and condenser are coupled together, charging seawater pipeline, concentrated seawater discharge tube, product water discharge tube, concentrated seawater conveyance conduit, concentrated seawater reflux line and concentrated seawater pipeline, and be arranged on the control valve on each pipeline.In use, by opening and closing the control valve on each pipeline, make the seawater that enters into each single-effect evaporator with different circulation style circulations, realized the change of the evaporation group number of low temperature multiple-effect distillation seawater desalination system when processing seawater.Therefore, the low temperature multiple-effect distillation seawater desalination system of variable effect group provided by the invention can adapt to the needs of different disposal seawater, has improved the adaptability of low temperature multiple-effect distillation seawater desalination system.
Accompanying drawing explanation
Fig. 1 is; The structural representation of the low temperature multiple-effect distillation seawater desalination system of the variable effect group of the embodiment of the present invention;
Fig. 2 is the equivalent schematic that the low temperature multiple-effect distillation seawater desalination system of the variable effect group of the present invention adopts four evaporation groups;
Fig. 3 is the equivalent schematic that the low temperature multiple-effect distillation seawater desalination system of the variable effect group of the present invention adopts three evaporation groups;
Fig. 4 is the equivalent schematic that the low temperature multiple-effect distillation seawater desalination system of the variable effect group of the present invention adopts two evaporation groups.
Reference numeral:
1 ~ 8: evaporimeter; 9: condenser; 10 ~ 16: fresh water flash tank;
17 ~ 22: concentrated seawater flash tank; 23: heat pump; 24: cooling sea water pump;
25: sea water pump; 26: product water pump; 27: concentrated seawater pump;
28: pan feeding sea water pump; 29 ~ 31: middle charge pump; 32 ~ 48: control valve;
49: jet chimney; 50: Mare Frigoris water discharge spout road; 51: raw material seawater source;
52: product water discharge tube; 53: concentrated seawater discharge tube; 54: charging seawater pipeline;
55: concentrated seawater reflux line; 56: concentrated seawater conveyance conduit; 57: concentrated seawater pipeline.
The specific embodiment
The evaporation group effect group of the low temperature multiple-effect distillation seawater desalination system of existing employing is fixed, after assembling, low temperature multiple-effect distillation seawater desalination system just can only adopt fixing evaporation group to process seawater, the evaporation group of changed handling seawater more, the scope of application is smaller.
In view of this, the invention provides a kind of improved technical scheme, by increasing the connecting pipe of each single-effect evaporator and corresponding control valve is set on connecting pipe in low temperature multiple-effect distillation seawater desalination system, control between each single-effect evaporator and the different connections of each single-effect evaporator and charging seawater pipeline, thereby realize low temperature multiple-effect distillation seawater desalination system, can after assembling, adopt as required the evaporation group of different numbers to process seawater, expand the scope of application of low temperature multiple-effect distillation seawater desalination system.
In order to make those skilled in the art better understand technical scheme of the present invention, below in conjunction with Figure of description, the embodiment of the present invention is described in detail.
As shown in Figure 1, the embodiment of the present invention provides a kind of low temperature multiple-effect distillation seawater desalination system of variable effect group, comprising:
The condenser 9 being communicated with raw material seawater source 51;
The jet chimney 49 being communicated with raw material vapour source, and be arranged on the heat pump 23 on described jet chimney 49;
The evaporation group of at least two series connection, described each evaporation group comprises the evaporimeter of at least two effect series connection, wherein, the evaporation group being communicated with the air inlet of described condenser 9 is tail evaporation group, evaporation group headed by the evaporation group being communicated with described jet chimney 49; The evaporimeter being communicated with adjacent evaporation group in described first evaporation group is last evaporator;
Imitate with each the charging seawater pipeline 54 that described evaporimeter seawater water inlet and described condenser 9 seawater delivery ports are communicated with respectively, and be arranged on described charging seawater pipeline 54 and the control valve corresponding with described each evaporation group and every 1st effective evaporator seawater water inlet respectively;
Imitate with each the product water discharge tube 52 that described evaporimeter product water delivery port and described condenser 9 product water delivery ports are communicated with respectively;
The concentrated seawater discharge tube 53 being communicated with described last evaporator seawater delivery port;
Respectively with the seawater delivery port of each evaporimeter in each effect evaporation group except head evaporation group and the concentrated seawater conveyance conduit 56 that charging seawater pipeline 54 is communicated with, and be arranged on the control valve on each described concentrated seawater conveyance conduit 56;
The concentrated seawater reflux line 55 being communicated with seawater delivery port and the described charging seawater pipeline 54 of described last evaporator, and be arranged on the control valve on described concentrated seawater reflux line 55;
The concentrated seawater pipeline 57 being communicated with described each concentrated seawater conveyance conduit 56 and described concentrated seawater reflux line 55, and be arranged on the control valve on each described concentrated seawater pipeline 57.
The low temperature multiple-effect distillation seawater desalination system of variable effect group provided by the invention can adopt according to the concrete condition of production evaporation group of different effect groups to process seawater, and the concrete course of work is as follows:
First, raw material seawater enters preheating in condenser 9, and the raw material seawater part after preheating enters in each single-effect evaporator.The unwanted raw material seawater of another part evaporimeter is by Mare Frigoris water discharge spout road 50 discharge systems.
Raw material steam enters in the evaporimeter being communicated with jet chimney 49 in first evaporation group after heat pump 23, carry out heat exchange with the raw material seawater in this evaporimeter, raw material steam-condensation after heat exchange becomes product water, product water delivery port by this evaporimeter is discharged in product water discharge tube 52, raw material seawater in this evaporimeter forms indirect steam after heat exchange, indirect steam is full of each single-effect evaporator successively, and carry out heat exchange with the seawater in each single-effect evaporator, the product water forming after indirect steam heat exchange is pooled to the interior discharge system of product water discharge tube 52 by the product water delivery port of each single-effect evaporator, an indirect steam part in tail evaporation group in last evaporator enters into condenser 9 and is used for raw material seawater to carry out preheating, the product water forming after indirect steam condensation enters in product water discharge tube 52, another part enters into jet chimney 49, with after raw material steam, again carry out heat exchange with seawater, after raw material seawater is concentrated in tail evaporation group, by connecting pipe, entering into successively each evaporation group further concentrates, a seawater part after concentrated by the last evaporator in first evaporation group enters into the interior discharge system of concentrated seawater discharge tube 53, a part is entered in charging seawater pipeline 54 and is mixed with raw material seawater by concentrated seawater reflux line 55, after mixing, again enters and respectively imitates in evaporation group.
The low temperature multiple-effect distillation seawater desalination system of the variable effect group that the embodiment of the present invention provides, when seawater being desalinated to processing, by control, be arranged on the evaporation group that control valve on charging seawater pipeline 54, concentrated seawater conveyance conduit 56, concentrated seawater reflux line 55, concentrated seawater pipeline 57 can form each single-effect evaporator different numbers, seawater is processed in each single-effect evaporator with different circulation styles, as: open control valve 32,33,34,35,36,37,38,39, close all the other control valves, each single-effect evaporator in system forms four evaporation groups; Open control valve 32,33,34,35,36,37,38,39,42,45, close all the other control valves, each single-effect evaporator in system forms three evaporation groups; Open control valve 32,33,34,35,36,37,38,39,42,40,45, close all the other control valves, each single-effect evaporator in system forms two evaporation groups.Therefore, the low temperature multiple-effect distillation seawater desalination system of the variable effect group that the embodiment of the present invention provides can adapt to different number evaporation groups and process seawater situation, has improved the conformability of low temperature multiple-effect distillation seawater desalination system.
Eight single-effect evaporators take below as example, the low temperature multiple-effect distillation seawater desalination system of the variable effect group that the embodiment of the present invention of further explaining provides.
Continuation is referring to Fig. 1, the low temperature multiple-effect distillation seawater desalination system of variable effect group comprises: evaporimeter 1, evaporimeter 2, evaporimeter 3, evaporimeter 4, evaporimeter 5, evaporimeter 6, evaporimeter 7, the evaporimeter 8 of connecting successively, preferably, described evaporimeter is shell-and-tube heat exchanger; The condenser 9 being communicated with raw material seawater source 51, the jet chimney 49 being communicated with evaporimeter 1 and raw material vapour source, and be arranged on the heat pump 23 on jet chimney 49, described heat pump 23 is hot compression injector, preferably, described heat pump 23 is also communicated with the gas outlet of evaporimeter 8, the concentrated seawater discharge tube 53 being communicated with evaporimeter 2 seawater delivery ports, the concentrated seawater reflux line 55 being communicated with evaporimeter 2 seawater delivery ports and charging seawater pipeline 54, the Mare Frigoris water discharge spout road 50 being communicated with described condenser 9 seawater delivery ports and described charging seawater pipeline 54.The product water discharge tube 52 being communicated with each single-effect evaporator product water delivery port, respectively by the concentrated seawater conveyance conduit 56 of the seawater delivery port of the seawater delivery port of the seawater delivery port evaporimeter 5 of evaporimeter 7, evaporimeter 8, evaporimeter 6, evaporimeter 4, evaporimeter 3 and 54 connections of charging seawater pipeline, by the concentrated seawater pipeline 57 of concentrated seawater conveyance conduit 56 and 55 connections of concentrated seawater reflux line; And be arranged on each control valve on concentrated seawater conveyance conduit 56, concentrated seawater reflux line 55, concentrated seawater pipeline 57 and charging seawater pipeline 54.
In above-described embodiment, the operation principle of the low temperature multiple-effect distillation seawater desalination system of variable effect group is as follows:
(1) four evaporation group
As shown in Figure 2, open control valve 32,33,34,35,36,37,38,39, close all the other control valves, evaporimeter 1 and evaporimeter 2 form first evaporation group, evaporimeter 3 and evaporimeter 4 form the second evaporation group, evaporimeter 5 and evaporimeter 6 form the 3rd evaporation group, and evaporimeter 7 and evaporimeter 8 form the 4th evaporation group.
First, raw material steam enters into the evaporimeter 1 of first evaporation group;
Raw material seawater is passed through Mare Frigoris water discharge spout road 50 discharge systems by condenser 9 heating rear portions, parallel evaporimeter 7 and the evaporimeter 8 of entering into of another part, and be full of successively evaporimeter 6, evaporimeter 5, evaporimeter 4, evaporimeter 3, evaporimeter 2, in evaporimeter 1, the raw material seawater that enters into evaporimeter 1 with and the steam that is advanced into carry out heat exchange, steam-condensation after heat exchange becomes product water, by product water discharge tube 52 discharge systems, raw material seawater is produced into indirect steam after heat exchange, the indirect steam producing is full of the heat-exchanging tube bundle of all the other each evaporimeters successively, after this, the raw material seawater and the indirect steam that enter in evaporimeter 7 and evaporimeter 8 carry out heat exchange, seawater is further concentrated, indirect steam is condensed into product water after heat exchange, by product water discharge tube 52 discharge systems, seawater after concentrated enters in evaporimeter 6 and evaporimeter 5 by concentrated seawater conveyance conduit 56, and again carry out heat exchange with the indirect steam in evaporimeter 5 and evaporimeter 6, the rest may be inferred, raw material seawater enters each evaporation group successively, and be concentrated in each evaporation group, finally by the seawater after concentrated with evaporimeter 2, enter into the interior discharge system of concentrated seawater discharge tube 53.
(2) three evaporation groups
As shown in Figure 3, open control valve 32,33,34,35,36,37,38,39,42,45, close all the other control valves, evaporimeter 1, evaporimeter 2, evaporimeter 3 and evaporimeter 4 form first evaporation group, evaporimeter 5 and evaporimeter 6 form the second evaporation group, and evaporimeter 7 and evaporimeter 8 form tail evaporation group.
First, raw material steam enters into the evaporimeter 1 of first evaporation group;
Raw material seawater is passed through Mare Frigoris water discharge spout road 50 discharge systems by condenser 9 heating rear portions, parallel evaporimeter 7 and the evaporimeter 8 of entering into of another part, and be full of successively evaporimeter 6, evaporimeter 5, evaporimeter 4, evaporimeter 3, evaporimeter 2, in evaporimeter 1, the raw material seawater that enters into evaporimeter 1 with and the steam that is advanced into carry out heat exchange, steam-condensation after heat exchange becomes product water, by product water discharge tube 52 discharge systems, raw material seawater becomes indirect steam in heat exchange rear portion, the indirect steam producing is full of the heat-exchanging tube bundle of all the other each evaporimeters successively.After this, parallel raw material seawater and the indirect steam entering in evaporimeter 7 and evaporimeter 8 carries out heat exchange, seawater is further concentrated, indirect steam is condensed into product water after heat exchange, by product water discharge tube 52 discharge systems, seawater after concentrated enters in evaporimeter 6 and evaporimeter 5 by concentrated seawater conveyance conduit 56, and again carry out heat exchange with the indirect steam in evaporimeter 5 and evaporimeter 6, the rest may be inferred, raw material seawater enters each evaporation group successively, and be concentrated in each evaporation group, finally by the seawater part after concentrated with evaporimeter 2, enter into the interior discharge system of concentrated seawater discharge tube 53, another part is by concentrated seawater reflux line 55, concentrated seawater pipeline 57 and concentrated seawater conveyance conduit 56 again enter in first evaporation group and concentrate.
(3) two evaporation groups
As shown in Figure 4, open control valve 32,33,34,35,36,37,38,39,42,40,45, close all the other control valves, evaporimeter 1, evaporimeter 2, evaporimeter 3, evaporimeter 4 form tail evaporation group, and evaporimeter 5, evaporimeter 6, evaporimeter 7 and evaporimeter 8 form first evaporimeter.
First, raw material steam enters into the evaporimeter 1 of first evaporation group;
Raw material seawater is passed through Mare Frigoris water discharge spout road 50 discharge systems by condenser 9 heating rear portions, the parallel evaporimeter 5 that enters into of another part, evaporimeter 6, in evaporimeter 7 and evaporimeter 8, afterwards by concentrated seawater conveyance conduit 56 and be advanced into evaporimeter 1, evaporimeter 2, in evaporimeter 3 and evaporimeter 4, the raw material seawater that enters into evaporimeter 1 with and the steam that is advanced into carry out heat exchange, steam-condensation after heat exchange becomes product water, by product water discharge tube 52 discharge systems, raw material seawater becomes indirect steam in heat exchange rear portion, the indirect steam producing is full of the heat-exchanging tube bundle of all the other each evaporimeters successively.After this, the parallel evaporimeter 5 that enters into, evaporimeter 6, evaporimeter 7, indirect steam in raw material seawater in evaporimeter 8 and each single-effect evaporator carries out heat exchange, after indirect steam heat exchange, be condensed into product water and the product water delivery port by each single-effect evaporator enters into the interior discharge system of product water discharge tube 52, raw material seawater in evaporimeter 7 and evaporimeter 8 is evaporated, after concentrated, by concentrated seawater discharge tube 53, enter in evaporimeter 5 and evaporimeter 6, again be evaporated, concentrated, seawater after being further concentrated is by the parallel evaporimeter 1 that enters into of concentrated seawater conveyance conduit 56, evaporimeter 2, in evaporimeter 3 and evaporimeter 4, after entering into seawater in evaporimeter 3 and evaporimeter 4 and being further concentrated, by parallel being transported in evaporimeter 1 and evaporimeter 2 of concentrated seawater conveyance conduit 56, be again concentrated, a seawater part after finally being concentrated by evaporimeter 2 enters into the interior discharge system of concentrated seawater discharge tube 53, another part is entered in charging seawater pipeline 54 and is mixed with raw material seawater by concentrated seawater reflux line 55, again be concentrated.
Preferably, the low temperature multiple-effect distillation seawater desalination system of variable effect group also comprises: be communicated with described condenser 9 gas outlets, for carrying out degassed vacuum extractor (not shown in FIG.) to entering the raw material seawater of described condenser 9.Vacuum extractor can be extracted incoagulable gas in seawater out, and the incoagulable gas that prevents from being blended in raw material seawater causes damage to the equipment of the low temperature multiple-effect distillation seawater desalination system of variable effect group.
Preferably, the low temperature multiple-effect distillation seawater desalination system of variable effect group also comprises: be arranged on the middle charge pump on each described concentrated seawater conveyance conduit 56; Charge pump 31 in the middle of evaporimeter 3 and evaporimeter 4 is corresponding, charge pump 30 in the middle of evaporimeter 6 and evaporimeter 5 are corresponding, charge pump 29 in the middle of evaporimeter 8 and evaporimeter 7 are corresponding, in the middle of each, charge pump provides transmitting power for the seawater in concentrated seawater conveyance conduit 56; Be arranged on the concentrated seawater pump 27 on described concentrated seawater discharge tube 53; Be arranged on the product water pump 26 on described product water discharge tube 52; Be arranged on the sea water pump 25 of the seawater water inlet of described condenser 9; Be arranged on the pan feeding sea water pump 28 on described charging seawater pipeline 54; Be arranged on the cooling sea water pump 24 on described Mare Frigoris water discharge spout road 50.On each pipeline, set up the pump of different purposes, can be convenient to the circulation of the liquid in pipeline, improve the operating efficiency of native system.
Continuation is referring to Fig. 1, in order to make full use of steam heat, in the low temperature multiple-effect distillation seawater desalination system of above-mentioned variable effect group, except the evaporimeter being communicated with described condenser 9, the all corresponding fresh water flash tank of every 1st effective evaporator, described in each, fresh water flash tank water inlet is communicated with the product water outlet of corresponding evaporimeter, and all fresh water flash tanks are by described product water discharge tube 52 series connection.The air inlet of the evaporimeter that described fresh water flash tank gas outlet is adjacent with corresponding evaporimeter is communicated with, and each fresh water flash tank is connected successively by described product water discharge tube 52.In the present embodiment, fresh water flash tank 10 is communicated with corresponding evaporimeter 1, fresh water flash tank 11 is communicated with corresponding evaporimeter 2, fresh water flash tank 12 is communicated with corresponding evaporimeter 3, fresh water flash tank 13 is communicated with corresponding evaporimeter 4, and fresh water flash tank 14 is communicated with corresponding evaporimeter 5, and fresh water flash tank 15 is communicated with corresponding evaporimeter 6, fresh water flash tank 16 is communicated with corresponding evaporimeter 7, and above-mentioned fresh water flash tank is by 52 series connection of product water discharge tube.The condensed water producing in evaporimeter 1 enters fresh water flash tank 10 as product water and carries out flash distillation, and flash steam enters evaporimeter 2; Complete mixing evaporator 2 produces after heat exchange product water and enter fresh water flash tank 11 and carry out flash distillation, flash steam enters evaporimeter 3, the like, final all product waters are pooled to after fresh water flash tank 16, by product water pump 26, promote discharge systems.
Continuation is referring to Fig. 1, in order to make full use of steam heat, in the low temperature multiple-effect distillation seawater desalination system of above-mentioned variable effect group, except head evaporation group, each evaporimeter of each effect evaporation group is a corresponding concentrated seawater flash tank respectively, the gas outlet of described concentrated seawater flash tank is communicated with the gas outlet of corresponding evaporimeter respectively, and described concentrated seawater flash tank is by described concentrated seawater discharge tube 53 series connection.In the present embodiment, the gas outlet of concentrated seawater flash tank 17 is communicated with the gas outlet of corresponding evaporimeter 3, the gas outlet of concentrated seawater flash tank 18 is communicated with the gas outlet of corresponding evaporimeter 4, the gas outlet of concentrated seawater flash tank 19 is communicated with the gas outlet of corresponding evaporimeter 5, the gas outlet of concentrated seawater flash tank 20 is communicated with the gas outlet of corresponding evaporimeter 6, the gas outlet of concentrated seawater flash tank 21 is communicated with the gas outlet of corresponding evaporimeter 7, the gas outlet of concentrated seawater flash tank 22 is communicated with the gas outlet of corresponding evaporimeter 8, and above-mentioned concentrated seawater flash tank is by 53 series connection of concentrated seawater discharge tube.The concentrated seawater producing in evaporimeter 2 enters concentrated seawater flash tank 17 and carries out flash distillation, and flash steam enters evaporimeter 3; Concentrated seawater after flash distillation carries out flash distillation at each concentrated seawater flash tank successively, and flash steam enters evaporimeter corresponding to each concentrated seawater flash tank difference, and the concentrated seawater after flash distillation is complete promotes discharge systems by concentrated seawater pump 25.
In sum, utilize the low temperature multiple-effect distillation seawater desalination system of variable effect group provided by the invention, when seawater being desalinated to processing, can select the evaporation group of different numbers to process seawater by the control valve on pipeline, obtain the seawater of variable concentrations.Meanwhile, adopt the low temperature multiple-effect distillation seawater desalination system of variable effect group provided by the invention, can improve the utilization rate of steam energy, reduced the fouling of seawater in each single-effect evaporator shell simultaneously.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (9)
1. a low temperature multiple-effect distillation seawater desalination system for variable effect group, is characterized in that, comprising:
The condenser being communicated with raw material seawater source;
The jet chimney being communicated with raw material vapour source, and be arranged on the heat pump on described jet chimney;
The evaporation group of at least two series connection, described each evaporation group comprises the evaporimeter of at least two effect series connection, wherein, the evaporation group being communicated with the air inlet of described condenser is tail evaporation group, evaporation group headed by the evaporation group being communicated with described jet chimney; The evaporimeter being communicated with adjacent evaporation group in described first evaporation group is last evaporator;
Imitate with each the charging seawater pipeline that described evaporimeter seawater water inlet and described condenser seawater delivery port are communicated with respectively, and be arranged on described charging seawater pipeline and the control valve corresponding with described each evaporation group and every 1st effective evaporator seawater water inlet respectively;
Imitate with each the product water discharge tube that described evaporimeter product water delivery port and described condenser product water delivery port are communicated with respectively;
The concentrated seawater discharge tube being communicated with described last evaporator seawater delivery port;
Respectively with the seawater delivery port of each evaporimeter in each effect evaporation group except head evaporation group and the concentrated seawater conveyance conduit that charging seawater pipeline is communicated with, and be arranged on the control valve on each described concentrated seawater conveyance conduit;
The concentrated seawater reflux line being communicated with seawater delivery port and the described charging seawater pipeline of described last evaporator, and be arranged on the control valve on described concentrated seawater reflux line;
The concentrated seawater pipeline being communicated with described each concentrated seawater conveyance conduit and described concentrated seawater reflux line, and be arranged on the control valve on each described concentrated seawater pipeline.
2. the low temperature multiple-effect distillation seawater desalination system of variable effect group as claimed in claim 1, is characterized in that, also comprises: be communicated with described condenser gas outlet, for carrying out degassed vacuum extractor to entering the raw material seawater of described condenser.
3. the low temperature multiple-effect distillation seawater desalination system of variable effect group as claimed in claim 1, is characterized in that, described evaporimeter is shell-and-tube heat exchanger.
4. the low temperature multiple-effect distillation seawater desalination system of variable effect group as claimed in claim 1, is characterized in that, described heat pump is hot compression injector.
5. the low temperature multiple-effect distillation seawater desalination system of variable effect group as claimed in claim 4, is characterized in that, the gas outlet of the evaporimeter that described heat pump is also communicated with described condenser is communicated with.
6. the low temperature multiple-effect distillation seawater desalination system of variable effect group as claimed in claim 1, is characterized in that, also comprises: the Mare Frigoris water discharge spout road being communicated with described condenser seawater delivery port and described charging seawater pipeline.
7. the low temperature multiple-effect distillation seawater desalination system of the variable effect group as described in claim 1 ~ 6 any one, is characterized in that, also comprises: be arranged on the middle charge pump on each described concentrated seawater conveyance conduit;
Be arranged on the concentrated seawater pump on described concentrated seawater discharge tube;
Be arranged on the product water pump on described product water discharge tube;
Be arranged on the sea water pump of the seawater water inlet of described condenser;
Be arranged on the pan feeding sea water pump on described charging seawater pipeline;
Be arranged on the cooling sea water pump on described Mare Frigoris water discharge spout road.
8. the low temperature multiple-effect distillation seawater desalination system of variable effect group as claimed in claim 7, it is characterized in that, except the evaporimeter being communicated with described condenser, the all corresponding fresh water flash tank of every 1st effective evaporator, described in each, fresh water flash tank water inlet is communicated with the product water outlet of corresponding evaporimeter, and each fresh water flash tank is connected by described product water discharge tube.
9. the low temperature multiple-effect distillation seawater desalination system of variable effect group as claimed in claim 8, it is characterized in that, except head evaporation group, each evaporimeter of each effect evaporation group is a corresponding concentrated seawater flash tank respectively, the gas outlet of described concentrated seawater flash tank is communicated with the gas outlet of corresponding evaporimeter respectively, and described concentrated seawater flash tank is connected by described concentrated seawater discharge tube.
Priority Applications (1)
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| CN103387308B (en) * | 2013-08-13 | 2014-10-01 | 国家海洋局天津海水淡化与综合利用研究所 | Multi-effect membrane distillation-multistage flash evaporation seawater desalination system |
| CN104386771B (en) * | 2014-12-03 | 2016-05-04 | 中国石油大学(华东) | Feeding manner, variable multiple-effect evaporation experimental provision and the application process thereof of effect number |
| CN106938178A (en) * | 2017-03-20 | 2017-07-11 | 国家海洋局天津海水淡化与综合利用研究所 | Multi-effect plate type film distilling seawater desalination system based on both vapor compression |
| CN107381694B (en) * | 2017-09-19 | 2020-10-09 | 四川大学 | Low-temperature multi-effect distillation seawater desalination device |
| CN109231320B (en) * | 2018-10-29 | 2020-02-21 | 山东大学 | Steady flow evaporator and seawater desalination system thereof |
| CN111099679B (en) * | 2018-10-29 | 2021-08-20 | 山东大学 | Evaporator for seawater desalination |
| CN111807443A (en) * | 2020-07-22 | 2020-10-23 | 天津理工大学 | Disc type solar micro air turbine thermal power generation and seawater desalination combined system |
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| CN1397500A (en) * | 2002-08-09 | 2003-02-19 | 周堃 | Multi-effect distilling process and equipment for desalinating seawater |
| CN1837075A (en) * | 2006-04-09 | 2006-09-27 | 青岛大学 | Low-temperature multi-effect seawater desalination process |
| CN102381734A (en) * | 2011-09-26 | 2012-03-21 | 中国电子工程设计院 | Low-temperature multi-effect seawater distillation and desalination system and method for sweater desalination |
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| CN1397500A (en) * | 2002-08-09 | 2003-02-19 | 周堃 | Multi-effect distilling process and equipment for desalinating seawater |
| CN1837075A (en) * | 2006-04-09 | 2006-09-27 | 青岛大学 | Low-temperature multi-effect seawater desalination process |
| CN102381734A (en) * | 2011-09-26 | 2012-03-21 | 中国电子工程设计院 | Low-temperature multi-effect seawater distillation and desalination system and method for sweater desalination |
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