WO2011157060A1

WO2011157060A1 - Device and method for treating water

Info

Publication number: WO2011157060A1
Application number: PCT/CN2011/001011
Authority: WO
Inventors: 龚文浩; 李和文; 李辉
Original assignee: Gong Wenhao; Li Heyi; Li Hui
Priority date: 2010-06-18
Filing date: 2011-06-17
Publication date: 2011-12-22
Also published as: CN101880068B; CN101880068A

Abstract

A device for treating water is provided, which comprises a first tube (12), a condensed water collection device (9), n second tubes (13), n reheaters (11) and a heat exchanger (5), wherein a condenser (3) is arranged in the first tube (12), and a spray device (8) and a filler (7) are arranged in each second tube (13). The water to be treated flows through the condenser (3) and the nth reheater (11) in turn, and is led into the heat exchanger (5) and the first to the (n-1)th reheaters (11) respectively, then is led into the spray devices (8) in the first to the nth second tubes (13), and is sprayed to the surface of the filler (7) in each second tube (13). The vapor flowing out from the first to the nth reheaters (11) is gathered together, then into the condenser (3) to exchange heat with the water to be treated and condensed into the condensed water. Simultaneously, a method for treating water is provided. The method is not affected by fouling and has a high evaporation temperature.

Description

Water treatment device and method

[0001] The present invention relates to a water treatment apparatus and method, and more particularly to a seawater desalination apparatus and method.

Background technique

[0002] Water shortages have become a major problem for humans in the 21st century. China's water resources situation is even less optimistic. As one of the world's 13 poor countries, the annual per capita water resources is only one-fourth of the world average, and two-thirds of the water-scarce cities. The China Academy of Engineering's "Study on China's Sustainable Development Water Resources Strategy in the 21st Century", i!i, pointed out that by 2010, China's water shortage will reach 100 billion cubic meters, and by 2030, water shortage will still be ^ Dry this 3⁄4 value. The development of desalination and the acquisition of fresh water from the ocean have become a common development trend in all countries of the world. I have a lot of demand for the production of fresh water on warships and islands. Therefore, the small and efficient seawater desalination equipment also has the market area of Yingchuan.

[0003] At present, the desalination technology is dominated by distillation. In the process of distillation desalination, the seawater is heated by the heat source to boil. Then it is condensed into fresh water. In addition to the electric power required by various pump motors, the heat source is also required. Commonly used heat sources ^ Steam, ;! 3⁄4 water, solar, geothermal water and waste heat.

[0004] The most widely used distillation techniques are multi-stage flash (MSF), multi-effect distillation (MED), and the like. The multi-stage flash distillation j water desalination technology has high energy consumption, and the crusting and corrosion problems are serious. The low-temperature multi-effect distillation seawater desalination technology is faster, and the more mature multi-effect distillation system uses the falling film evaporation method, mainly in the form of round tube falling film evaporation or 3⁄4 human plate Γ film evaporation, but its system The amount of consumables is large, the volume is large, the initial investment is high, and the heat source has certain requirements ^: the maximum evaporating temperature is required to not exceed 70 ° C, otherwise the scaling problem is serious, which affects the system performance. Summary of the invention

In view of the above problems, an object of the present invention is to provide a method of presenting a water at a high temperature which is not affected by fouling and has a high evaporation temperature.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A water treatment device comprising a cylinder, a condenser, a condensate collecting device, a heat exchanger, and a spray device: WJlii. The condenser, the shower device and the packing are disposed in the cylinder, to be The treated water is introduced into the heat exchanger in the heat source, and then sprayed to the surface of the filler by the shower device to partially evaporate into water vapor, the unvaporized water stream, and the water vapor is guided. The condenser is condensed into condensed water by heat exchange with cooling water.

[0008] And a water treatment method comprising the steps of: heating the water to be treated; heating / i lK'r. Water is sprayed onto the surface of the packing to evaporate into water vapor.

The water treatment method further includes the steps of: condensing water vapor evaporated from the filler into condensed water; and collecting the condensed water.

[0010] The heat source is one of solar energy, geothermal energy, wind energy, industrial waste heat, direct combustion hot water, and flue gas.

[ooi i] The condenser and/or heat exchanger may be one of a plate fin type, a finned tube type, a detachable plate type, a monolithic plate type, a column type Κ: type heat sink.

[0012] The condenser may include a fan.

[0013] The shower device may also include a fan.

[0014] The filler may be a grid packing, a corrugated packing, a pulse packing, a Raschig ring packing, a Pall ring packing, a step J! One or more of filler, saddle filler, saddle filler, metal ring saddle filler or spherical filler.

[0015] The cylinder may be vertical or horizontal.

[0016] The arrangement of the cylinders may be multi-barrels, and in the multi-cylinder arrangement, multi-stage or multi-effect forms may be used, (\. In multi-stage or multi-effect forms, further series or parallel forms may be further adopted. .

[0017] The cylinder adopts a negative pressure to facilitate evaporation of water to be treated in a high temperature state.

[0018] In the above technical solution, since the evaporation process adopts the method of separating the heat exchanger and the filler, the former is carried out, and the latter is mass-transferred, that is, the water to be treated absorbs heat in the heat exchanger, and then is sprayed. After the device is sprayed, it evaporates on the surface of the filler which is in the range of lilliWW, and the filler is in the negative pressure cylinder. Due to the heat and mass transfer separation, the evaporation efficiency can be fully utilized to maximize the evaporation ratio. At the same time, the tiny special structure on the surface of the filler also facilitates the nuclear boiling of the superheated water: In addition, due to heat and mass transfer separation, it can be used. Various compact heat exchangers improve heat exchange efficiency and reduce system body: strengthen condensation heat transfer, the condenser adopts multi-fin type compact heat exchanger, supplemented by fan for forced convection, and improve heat transfer efficiency 4 ⁽ , ; System volume.

[0019] The present invention has the following advantages due to the above technical solution:

[0020] 1. Overcome the problem of easy scaling in conventional systems at high temperatures. The fouling of the traditional seawater desalination system is mainly caused by the heat transfer of the original C3. When the seawater evaporates, the salt will gradually accumulate on the evaporation surface, especially at high temperatures. In the form of mass transfer separation of the system, the structured packing is used for evaporation separately, and the salt is deposited mainly on the surface of the packing, which does not affect the circulation flow and the heat transfer performance of the system.

[0021] 2. Evaporation, high condensation efficiency, small system size and compact structure. The above-mentioned system adopts a packing ratio larger than that of lin ft; the minute structure of the surface becomes a vaporization core of seawater nucleate boiling at a higher temperature, and the multi-finned compact heat exchange can be adopted for the evaporating effect cattle condenser. Increases condensation efficiency and further reduces system volume.

[0022] 3. The invention makes forced convection heat transfer on the surface of the multi-fin compact heat exchanger when condensing, and strengthens the efficiency of the conversion, which is beneficial to increase the water production per unit volume. Instruction manual

[0023] 4. The heat source of the invention is flexible, and the hot water produced by burning coal, gas, fuel oil, solar energy and electric heating can be selected, and various boilers, heating furnaces, burning furnaces, smelting furnaces, gas in the industry can also be used. Furnace, heat installation ' ' i : il: J flue gas waste heat.

[0024] The water treatment device and method of the present invention can be used not only for desalination of seawater, but also for sewage and water treatment, and extracting clean and hygienic steamed water from sewage or brackish water to realize water. Recycling of resources.

DRAWINGS

1 is a schematic view showing the structure of a single barrel single-effect vertical water treatment device;

2 is a schematic structural view of a single-bucket multi-stage parallel vertical water treatment device

3 is a schematic structural view of a single barrel single-effect horizontal water treatment device;

4 is a schematic structural view of a double barrel single-effect water treatment device;

[0029] FIG. 5 is a schematic structural view of a multi-bucket multi-stage parallel water treatment device

6 is a schematic structural view of a multi-bucket multi-stage series water treatment device;

[0031] FIG. 7 is a schematic structural view of another multi-bucket multi-stage series water treatment device

[0032] FIG. 8 is a schematic structural view of a multi-bucket multi-effect parallel water treatment device

[0033] FIG. 9 is a schematic structural view of a multi-bucket multi-effect series water treatment device

10 is a schematic structural view of another multi-barrel multi-effect series water treatment device;

11 is a schematic view showing the structure of a single barrel spray condensation single-effect vertical water treatment device;

detailed description

[0036] 1. A single barrel single-effect vertical water treatment device

[0037] As shown in FIG. 1, including a fan (1) cylinder (2), a condenser (3), a cooling water pump (4), a condensate collecting device [Ί: W), a heat exchanger (5) , spray device (8), heat source water pump (6) and packing (7), the condenser (3), spray ft': (8),

(7) placed in the cylinder (2) from high to low, the water to be treated is introduced into the heat exchanger (5) to exchange heat with the heat source, and then sprayed through the shower device (8) The surface of the filler (7) is partially evaporated into water vapor, and the unvaporized water III is mixed with the water to be treated, and then re-entered into the heat exchanger (5) to exchange heat with the heat source. The water vapor is introduced into the heat exchanger by the heat exchange of the '3' and the condenser (3) and the cooling water are condensed into condensed water and flows into the condensed water collecting device (9). (5) Some of them will be discharged after excretion.

The water to be treated before entering the heat exchanger (5) may be sequentially introduced into the condenser (3) to serve as cooling water for the condenser (3).

[0039] 2. Single-bucket multi-stage parallel vertical water treatment device

[0040] As shown in FIG. 2, the difference from the example 1 is that a plurality of sets of showers i3⁄4 (8 ll" ^ ^: : are arranged in order from top to bottom. Instruction manual

(7), the water to be treated is introduced into the heat exchanger (5) and exchanged with the heat source, and simultaneously distributed to the plurality of sets of spray coatings ( ) spray and filler (7) surface, multiple groups The spray water partially evaporates into water vapor, and the unvaporized water flows to the bottom of the cylinder.

[0041] 3, a single barrel single-effect horizontal water treatment device

[0042] As shown in FIG. 3, the difference from the example 1 is that the cylinder (2) is horizontal and is divided into | along the length direction of the cylinder (2); ": minute, the middle is blocked by the liquid blocking device (10) Separate, one side is equipped with sprinkler (8) and packing (7), and the other side is S condenser (: ί), machine (1).

[0043] 4, a double barrel single effect water treatment device

[0044] As shown in FIG. 4, the first cylinder (12), the second cylinder (13), the condenser (3), the condensate collecting device ϊ 'ϊ: (':)), and the reheater are included. (11), a heat exchanger (5), a shower device (8), and a filler (7), wherein the condenser (3) is disposed in the 3⁄4 ---, (! 1 ), the shower device (8) and a filler (7) disposed in the second cylinder (13), the water to be treated is introduced into the exchange (5) to exchange heat with a heat source, and then sprayed through the shower device (8) Leaving to the surface of the filler (7), part of the water is evaporated to moisture, and the unvaporized water flows to the bottom of the second cylinder (13), and after flowing out, it is mixed with the water to be treated, and new JJi And heat exchange with the heat source into the heat exchanger (5), the water vapor is guided to the reheater (1 1 ) to exchange heat with the cooling water, and then guided to the condenser (3) The heat exchange of the cooling water is condensed into condensed water, and flows into the condensed water to collect 3⁄4⁄4 '^ (^.

[0045] The water to be treated before entering the heat exchanger (5) may be sequentially introduced into the condenser (and the device (11), used as the condenser (3) and the Cooling water for the heater (11).

[0046] 5, multi-bucket multi-stage parallel water treatment device

[0047] As shown in FIG. 5, the first cylinder (12), the condensate collecting device (9), the three second cylinders (13), and the heat exchange (5) are included in the first cylinder. a condenser (3) is provided, and the second cylinder (13) is provided with a spray device (8) and a filler (7) _: after the water treated by the f'f flows through the condenser (3), the The heat exchanger (5) exchanges heat with the heat source, and the water from the heat exchanger (5) is flowed into a flow of 111 1 V 'Δ- the water is divided into three channels and is respectively guided to the sprays in the three second cylinders. The device (8), in each of the second cylinders (1 3⁄4屮. The treated water is sprayed onto the surface of the filler (7) through the spraying device (8), a part of the water is evaporated into water vapor, and the unvaporized water passes through the H body I Flowing out; mixing the unvaporized water flowing from the bottom of the i-th second cylinder (13) with the water from the condenser (3), and re-entering the heat exchanger (5) heat exchange with a heat source, the unexposed water flowing out from the bottom of the first second cylinder is mixed with the water to be treated from the heat exchanger (5) and reintroduced into the first The spray W (H) in the second cylinder is resprayed on the surface of the filler (7) of the first second cylinder After the water vapor evaporated from the surface of the filler (7) of each second cylinder is merged through the pipeline, it is guided to the condenser (3) for heat exchange with the water to be treated, and is condensed into cold water, 1⁄4t into Into the condensate collecting device (9). The water that has not evaporated from the other two second cylinders flows through the bottom portion of the cylinder, and partially flows back to the spraying device (8) and the packing (7).

[0048] 6, multi-bucket multi-stage series water treatment device Description

[0049] As shown in FIG. 6, comprising a first cylinder (12), a condensate collecting device (9), three second cylinders (1:0, heat exchange (5), the first cylinder ( 12) a condenser (3) is provided, and the second cylinder (13) is provided with a shower device (8) and a material ('): V: · the treated water flows through the condenser (3) and is introduced into the station. The heat exchanger (5) exchanges heat with the heat source, and then is introduced into the three:: in the cylinder, in one of the second cylinders (13), from the previous second cylinder (13) The water to be treated is sprayed through the 3 3⁄4; (8) sprayed onto the surface of the filler (7), a part of the water is evaporated into water vapor, and the unvaporized water flows out through the bottom of the cylinder as a second cylinder (13) The water to be treated, the unvaporized water flowing out from the bottom of the last second cylinder (13) is mixed with the water to be treated of the condenser (3), and then re-entered into the heat exchanger (5) Exchanging heat with the heat source, the water to be treated by the IS (the treated water is separated into two branches before entering the heat exchanger (5), and the first branch is connected to the first one. The bottom of the cylinder and the second and second a pipe between the cylinders such that the unvaporized water flowing out from the bottom of the first second cylinder is mixed with the water to be treated from the condenser and then enters the second second cylinder Body: from the ^τ ί : the water vapor evaporated from the surface of the packing (7) of the cylinder (13) is merged by the pipeline and then guided to the condenser (3⁄4: treated water for heat exchange is condensed into condensed water , flows into the condensate collecting device (9).

[0050] 7. Another multi-bucket multi-stage series water treatment device

[005.1] As shown in FIG. 7, the first cylinder (12), the condensate collecting device (9), and the three second cylinders (1 3) are exchanged.

(5), the first cylinder (12) is provided with a condenser (3), and the second cylinder (13) is provided with a spray device (8) and a filler (7): ii treated water flows through The condenser (3) is then introduced into the heat exchanger (5) to exchange heat with the heat source, and then introduced into the ":.. cylinder", in one of the second cylinders (13), The water to be treated from the previous second cylinder (13) is sprayed onto the surface of the packing (7) through the spray device (8), a part of the water is evaporated into water vapor, and the unvaporized water flows out through the bottom of the cylinder as an entry. - the water to be treated of the second cylinder (13), the unvaporized water flowing from the bottom of the last second cylinder (13) is mixed with the water to be treated of the condenser (3), and then re- Entering the heat exchanger (5) to exchange heat with the heat source, and circulating; the water vapor evaporated from the surface of the filler (7) of the cylinder (13) is merged by the pipeline and then guided to the condenser (3) The heat exchange of the water to be treated is condensed into condensed water and flows into the condensed water collecting device (9).

[0052] 8, multi-barrel multi-effect parallel water treatment device

[0053] As shown in FIG. 8, the first cylinder (12), the condensate collecting device (9), the three second cylinders (Π), the first one (1 1) and the heat exchanger are included ( 5), the first cylinder is provided with a condenser (3), and each of the second cylinders (1) is provided with a spray (8) and a filler (7); the water to be treated flows through After the condenser (3) and the third reheater 0.1), the 'λ roads are respectively entered into the heat exchanger (5) and the first to second reheaters (11), Then, the shower device (8) introduced into the Lth to the second taste, respectively, is sprayed onto the surface of the filler (7) in each of the second cylinders, and a part of the water is evaporated into a water swallow' Ί—the unvaporized water flows to the bottoms of the respective second cylinders respectively; the water in the first to second second cylinders (13) is guided to the first to the first The two reheaters (11) exchange heat with the water to be treated, and the water vapor flowing out from the first to the second mountain: heat (11) is merged and guided to the condenser (3) Heat exchange with the water to be treated is condensed into The instruction water flows into the condensate collecting device (9); the unswept water flowing out from the bottom of the first to second second cylinders (13) is mixed with the water to be treated and then introduced into the water In the heat exchanger (5) and the first to second reheaters (1 1 ): in the heat exchanger (5), the water to be treated exchanges heat with a heat source.

[0054] 9, multi-barrel multi-effect series water treatment device

[0055] As shown in FIG. 9, a first cylinder (12), a condensate collecting device (9), three second cylinders (13), a vessel (11), and a heat exchanger (5) are included. The first cylinder is provided with a condenser (3), and the second cylinder (U) is provided with a spray device: 'i': (8) and "A material (7); water to be treated After flowing through the condenser (3) and the third reheater (11) in turn, it is introduced into the heat exchanger (5) ¹ j heat source heat exchange, and then introduced into the first second cylinder (13) The shower device (8) is sprayed onto the surface of the first second cylinder (13⁄4 material (7), a part of the water is evaporated into water vapor, and the unvaporized water passes through the first second cylinder: 3 The bottom of the bottom is discharged, and the shower device (8) introduced into the second second cylinder (13) after the first reheater is sprayed onto the second second cylinder (1; 7) surface, a part of the water evaporates into water vapor, the unvaporized water passes through the bottom of the second second cylinder (13). Then passes through the second reheater, and so on, the water to be treated is The third second cylinder (13) passes through the surface of the filler (7) which is sprayed into it, and a part of the water evaporates into Vapor, unvaporized water flows out through the bottom of the third :: (13), and after mixing with the water to be treated from the third reheater (11), re-enters the heat exchanger ( ) 3⁄4 Source heat exchange; the water vapor evaporated from the surface of the filler (7) of the i-th second cylinder (11) is introduced into the first reheater (11) and is treated to be treated therein The water heat exchange, i = 2, 3, and then turbulent from each reheater (1 1 ); the condensed water vapor and part of the condensed water merge and are directed to the condenser (3) and the water to be treated The heat exchange is condensed into cold water into the condensate collecting device (9).

[0056] 10, another multi-barrel multi-effect series water treatment device

[0057] As shown in FIG. 10, the difference from the example 9 is that the water from the third reheater (11) is divided into two before entering the heat exchanger (5). a branch, wherein the first branch is connected to the pipe between the bottom of the third: -. i W iA 'A ) and the third reheater, such that from the third The unvaporized water flowing out from the bottom of the second cylinder (I) is mixed with the water to be treated from the third reheater before entering the heat exchanger (5).

[0058] 11. Single barrel spray condensation single-effect vertical water treatment device

[0059] As shown in FIG. 11, comprising a cylinder (2), a condensing filler (3), a condensation spray device, a preheater (16), a condensate collecting device (9), a heat exchanger (5), Evaporative spray device (8) and evaporating packing (7), said condensing filler (3), condensing spray

(15), a condensate collecting device (9), an evaporative shower device (8), and an evaporating packing (7) are disposed in the cylinder (2), f. Chuanchuan: water is introduced into the heat exchanger (5) heat exchange with the heat source, and then sprayed to the surface of the steaming material (7) through the evaporation shower device (8), a part of the water is evaporated into water vapor, and the unvaporized water flows to the bottom of the cylinder body. The water vapor condensed packing is condensed into condensed water, and the condensed water is collected by the condensed water collecting device (9), and a part thereof is used in the λ-preheater (16) for pre-preparation. the hot water to be treated, the condensed water from the preheater (16) after flowing out of ^a primer. The condensing spray device (15) described in the specification is sprayed onto the surface of the condensate packing.

[0060] The present invention has been described only by the above embodiments, and the structure, arrangement position, and connection of the components are all changed by ί. On the basis of the technical solution of the present invention, the individual components are performed according to the principles of the present invention. Improvements and equal transformations are not excluded from the scope of the present invention.

Claims

1 - A water treatment device comprising a cylinder (2), a condenser (3), a condensate collecting device (9), a heat exchanger (5), a shower

(8) and filler (7), the condenser (3), the shower device (8), and the filler

(7) disposed in the cylinder (2), water to be treated is introduced into the heat exchanger (5) to exchange heat with a heat source, and then sprayed to the filler against the shower device (8) (7) The surface portion is evaporated to water vapor, and the unvaporized water flows to the bottom of the cylinder, and the water vapor is guided to the condenser (3) for heat exchange with the cooling water to be condensed into condensed water.

The water treatment device according to claim 1, characterized in that the water to be treated is used as cooling water of the condenser (3) before entering the heat exchange (n).

3. The water treatment device according to claim 2, wherein a part of the water to be treated is discharged after flowing through the condenser (: 3⁄4).

4. The water treatment device according to claim 1, wherein the unvaporized water is mixed by the water discharged from the bottom of the cylinder, and then re-entered into the heat exchanger (5) and exchanged with the heat source. heat.

The water treatment device according to claim 1, wherein the cylinder (2) is a vertical type, the condenser (3), a condensate collecting device (9), and a shower device ( 8) and the filler (7) are arranged in the cylinder (2) in order from top to bottom.

6. The water treatment device according to claim 5, comprising a plurality of sets of showers arranged in order from top to bottom? ( ' and packing (7).

7. The water treatment device according to claim 1, wherein the cylinder (2) is horizontal and is divided into two parts along the length of the cylinder (2), and is separated by a liquid blocking device (10). On, one side is equipped with sprinkler (8) and packing (7), I cloth? ,: cooler (3).

8. A water treatment device comprising a cylinder (2), a condensate packing (3), a condensing spray device, a preheater (16), a condensate collecting device (9), a heat exchanger (5), Evaporative spray device (8) and evaporating packing (7), said condensing packing (3), condensing spray device '(ID), condensate collecting device (9), evaporating shower device (8) and evaporating packing (7) disposed in the cylinder (2), water to be introduced is introduced into the heat exchanger (5) to exchange heat with a heat source, and then sprayed through the evaporation shower device (8) to the Evaporating the surface of the material (7), a part of the water evaporates into water vapor, and the unvaporized water flows to the bottom of the cylinder, and the water vapor is led to the cold water. The material is condensed into condensed water, the condensed water After being collected by the condensed water collecting device (9), a part of it is taken into the device (16) for preheating the water to be treated, the condensed water from the preheater (16) After being vented, it is introduced: the M condensing spray device (15) is sprayed onto the surface of the condensate packing.

9. A water treatment device comprising a first cylinder (12), a second cylinder (13), a condenser (3), and a condensed water collection (').) a reheater (1 1), a heat exchanger (5), a shower device (8) and a filler (7), the condenser (3) being disposed in the first let (1 2 ), the shower device (8) and a filler ( 7) disposed in the second cylinder (13), the water to be treated is introduced into the heat exchange; (5) is exchanged with the heat source, and then sprayed through the shower device (8) to the office The surface of the filler (7), - part of the water is water vapor, the unvaporized water flows to the bottom of the second cylinder (13), the water vapor is directed to the reheater (1 1 ) The water is exchanged by the claims and then directed to the condenser (3) for heat exchange with the cooling water to be condensed into condensed water.

10. The water treatment device according to claim 9, wherein the water to be treated is sequentially introduced into the condenser (3) and the reheater before entering the heat exchanger (. 11), used as the cooling water of the condenser (3) and the pj:heater (!1 1).

11. The water treatment device according to claim 9, wherein the unvaporized water flows from the bottom of the second cylinder; ! ', ¹ the water to be treated is mixed, and then the heat is re-entered Heat exchange with the heat source in the device (5).

12. A water treatment device comprising a first cylinder (12), a condensate collecting device (9), n second cylinders (a heat exchanger (11), and a heat exchanger (5), said A condenser (3) is arranged in a cylinder, and each of the second cylinders (13) is provided with a H-leaching device (8) and a packing (7); the water to be treated flows through the condenser (3) and the first After n reheaters (1.1), the sub-n-channels are respectively introduced into the heat exchanger (5) and the first to n-1th reheaters (11), and then introduced into the first The shower device (8) in 1 to 笫n first bodies is sprayed onto the surface of the filler (7) in each of the second cylinders, and a part of the water 3⁄4 is water A gas, unvaporized water Flowing to the bottom of each of the second cylinders; water in the first to nth second cylinders (13) is guided to the first to nth reheaters ( 11) heat exchange with the water to be treated, the water vapor flowing out from the first: n heat exchangers (11) is merged and guided to the condenser (3) for heat exchange with the water to be treated Condensed by condensed water; flowing from the bottom of the first to the nth second cylinders (13) The unvaporized water is mixed with the water to be treated) into the heat exchanger (5) and the first to n-1th reheaters (11); In the device (5), the water treated by the ί exchanges heat with the heat source.

13. A water treatment device comprising a first cylinder (12), a condensate collecting device (9), n second cylinders (1: '>), π μ ι. Heaters (11) and a heat exchanger (5), a condenser (3) is disposed in the first cylinder, and a spray device () and a filler (7) are disposed in the second cylinder (1.3); the water to be treated flows through the condensation in sequence The device (3) and the nth reheater (11) are then introduced into the heat exchanger (h) ¹ j source heat exchange, and then introduced into the first second cylinder (13) shower device (8) Spraying onto the surface of the first second simplified body (), a part of the water is evaporated into water vapor, and the unvaporized water flows out through the bottom of the first second cylinder (13). Then, the shower device (8) introduced into the second second cylinder (13) after the first reheater is sprayed onto the surface of the second (i)th filler (7), a part of the water Evaporating into water vapor, the unvaporized water passes through the second second cylinder (I;;;;; outflow, then through the second reheater..., and so on, until the n-1th Reheater (1 1 ) and πth second simplified body (1. The water to be treated passes through the nth second cylinder (13) The spray device (7) sprayed into the filler (7) ^ (ill, part of the water is evaporated into water vapor, and the unvaporized water flows out through the bottom of the nth second cylinder (13), Έΐ ^Λ ί η ΐ ΐ ''' 热热热热热热热热热热热热热热热热热热热热热热热热热热热热热热热热热热热热热热热热热热热The water vapor evaporated from the surface of the filler (7) of 1 is introduced into the i-th reheater (1 1) to exchange heat with the water flowing through the 'bu Chuanchuan' of the towel, and then from each reheater ( 11) The water vapor and the partially condensed water flowing out are merged and then guided to the condenser to exchange heat with the water to be treated, and condensed into condensed water, wherein i = 1, 2, ..., nl. Claim

14. The water treatment device according to claim 13, characterized in that the water to be supplied to the fli from the nth reheater (II) is separated from the n- before entering the heat exchanger (5). a branch branch, wherein the i-th branch is connected to the pipe between the ith ith: ί;; 底部, (13) and the i-th reheater, such that The bottom of the i-th second cylinder (13). The unvaporized water that is discharged is mixed with the water to be treated from the n-th reheater and then enters the heat exchanger (Γ)) , 1, oh! = 1, 2, ···, n- 1.

A water treatment device comprising a first cylinder (12), a condensate collecting device (9), n second cylinders (1.3), heat exchange (5), the first cylinder (12) There is a condenser (3)', and the second cylinder (13) is provided with a spray device S (8) and a material (7): after the water to be treated flows through the condenser (3), it enters the The heat exchanger (5) exchanges heat with a heat source, and the water processed from the heat exchanger (5) '-| 'flow!;| 11) ] Hi is divided into n ways and guided to the n second cylinders respectively The spraying device (8) in the body, in each of the second cylinders ( ), the water to be treated is sprayed onto the surface of the filler (7) through the spraying device (8), and a part of the water is evaporated into water vapor, which is not evaporated. The water flows out through the bottom of the ί; the unvaporized water flowing out from the bottom of the i-th second cylinder (13) is mixed with the water from the condenser W, and then re-enters the heat exchange The heat exchanger (5) exchanges heat with the heat source, and the water flowing from the bottom of the i-th second cylinder is mixed with the water to be treated from the heat exchanger (5) and is again introduced into the ith second The spray of the cylinder **3⁄4 (8) is resprayed in the ith second cylinder (7) the surface of the material, where i = 2, 3, ..., n; from each of: the N i ^ ii'j filler (7) out of the surface of the evaporation of water vapor through conduit confluence, is guided to the condenser The heat exchange with the water (to be treated) is condensed into condensed water.

16. A water treatment device comprising a first cylinder (12), a condensate collecting device (9), n second cylinders (13), and (5), said first cylinder (12) There is a condenser (3), and the second cylinder (13) is provided with a spraying device (8) and a material (7): V, and the treated water flows through the condenser (3) and is introduced into the replacement. The heat exchanger (5) exchanges heat with the heat source, and is then introduced into the π barrels in turn, in one of the second cylinders (13), the to-be-processed from the previous second cylinder (13) Water sprayed

(8) spraying onto the surface of the filler (7), a part of the water is evaporated into water vapor, and the unvaporized water flows out through the bottom of the cylinder as the water to be treated entering the second cylinder (13), from the last second The unvaporized water flowing out from the bottom of the cylinder (13) is mixed with the water to be treated of the condenser (3), and then re-enters the heat exchanger (5) to exchange heat with the heat source, so that the cycle: from A The water vapor evaporated from the surface of the packing (7) of the cylinder (13) is led to the condenser after being merged by the pipe (: 0' j of water to be treated for heat exchange is condensed into condensed water.

17. A water treatment device according to claim 16, characterized in that n-1 branches are branched before the water to be discharged from the condenser (3) enters the heat exchanger (5), Wherein the i-th branch is connected to the bottom of the i-th second simplified body; the pipe between the i+1th second cylinders, such that the pipe flows out from the bottom of the i-th second cylinder The evaporated water is mixed with the water to be treated from the condenser and then enters the i+1th second cylinder, wherein i-1, 2, . . . , n-1.

18. A water treatment device according to any of the preceding claims, wherein the cylinder is under negative pressure. Claim

19. A water treatment device according to any of the preceding claims, characterized in that the condenser (3) encloses a fan (1).

20. A water treatment device according to any of the preceding claims, characterized in that the evaporative spray device (8) comprises a wind (1).

21. A water treatment device according to any of the preceding claims, characterized in that the condensed water is collected by the condensed water collection (9).

22. A water treatment device according to any of the preceding claims, wherein the condenser (and/or heat exchanger (..)) is plate fin type, finned tube type, detachable plate type, whole One of the plate and tube-and-tube heat sinks.

The water treatment device according to any of the preceding claims, wherein the filler (7), evaporating material, and cold material are grid packing, corrugated packing, pulse packing, Raschig ring packing, and abalone. One or more of a ring packing, a step ring packing, a saddle material, a saddle packing, a metal ring saddle packing or a spherical packing.

24. A water treatment device according to any of the preceding claims, wherein the heat source comprises one of solar energy, geothermal energy i'ii::. wind energy, industrial waste heat, direct combustion hot water and flue gas.

The water treatment device according to any of the preceding claims, wherein the water to be treated comprises sea water, ''···! (, brackish water).

26. A method of water treatment, comprising the steps of:

(1) heating the water to be treated;

(2) Spray the heated water to be sprayed to the filler to evaporate.

The water treatment method according to claim 26, further comprising the steps of: condensing /1 of steam evaporated from the packing crucible into condensed water; and collecting the condensed water.

The water treatment method according to any one of claims 26 to 27, wherein the water to be treated is water, sewage, brackish water.