CN210048516U

CN210048516U - Water treatment evaporator

Info

Publication number: CN210048516U
Application number: CN201920437218.1U
Authority: CN
Inventors: 朱伟; 赵品晖; 张永刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-02
Filing date: 2019-04-02
Publication date: 2020-02-11
Anticipated expiration: 2029-04-02

Abstract

The utility model provides a water treatment evaporator, includes the casing, installation water film device in the casing, casing installation inlet tube, the play water end and the water-locator of inlet tube are connected, the water-locator is located water film device top, water film device is arranged into the rectangle by several column body pipes or board, water film device's length and width are less than water-locator's length and width, casing one side installation heat source advances the pipe, casing opposite side installation heat source exit tube, install the outlet pipe on the casing of water film device bottom, the utility model provides a water treatment evaporator can reduce the sea water desalination cost by a wide margin, make the sea water desalination cost reduce to 3-4 yuan/ton from present 6-10 yuan/ton. The seawater is directly used for heat exchange by the water film device, the specific structure of the water film device enables large-area heat exchange to reduce production cost, the temperature of a water film formed on the water film device is high, energy can be saved, and the seawater can be desalinated to reach the daily life using state.

Description

Water treatment evaporator

Technical Field

The utility model relates to a water treatment equipment specifically is a water treatment evaporator.

Background

The seawater desalination is mainly carried out by a distillation method or a reverse osmosis membrane method, and the method with lower manufacturing cost is the distillation method, so the application is wider. However, the distillation method generally adopts multi-stage distillation, the cost is still high, so a plurality of schemes are provided for the technical personnel in the field, the production cost is further reduced, the principles of various improved structures are basically consistent, devices for distillation all adopt indirect heat exchange, the corrosion resistance requirement on a heat transfer medium is high, the manufacturing cost of an evaporator is difficult to reduce, and the cost of seawater desalination treatment is further influenced.

The utility model aims at providing a water treatment evaporator which changes the prior water treatment method and greatly reduces the water treatment cost.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a realize above-mentioned purpose, realize through following technical scheme:

a water treatment evaporator comprises a shell, a water film device is arranged in the shell, a water inlet pipe is arranged on the shell, the water outlet end of the water inlet pipe is connected with a water distributor, the water distributor is positioned above the water film device, the water film device is arranged into a rectangle by a plurality of column pipes or plates, the length and the width of the water film device are smaller than those of the water distributor, a heat source inlet pipe is arranged on one side of the shell, a heat source outlet pipe is arranged on the other side of the shell, and a water outlet pipe is arranged on the shell at the bottom of.

The bottom end of the water film device is provided with a concentrated water collecting box which is tapered, the large-diameter port of the concentrated water collecting box is positioned at the bottom of the water film device and is connected with the inner wall of the shell, and the bottom end of the concentrated water collecting box is connected with a water outlet pipe.

The water film device is characterized in that a plurality of columns are solid columns, one end of each column in the length direction is arranged below the water distributor, and water sprayed by the water distributor is distributed on the surfaces of the solid columns downwards along the upper ends of the columns.

The water outlet end of the water outlet pipe is connected with the flash evaporator, the top end of the flash evaporator is provided with a vapor-liquid mixing outlet pipe, and the outlet of the vapor-liquid mixing outlet pipe is connected with the purified water recoverer.

The utility model provides a pair of water treatment evaporator can reduce the sea water desalination cost by a wide margin, makes the sea water desalination cost reduce to 3-4 yuan/ton from present 6-10 yuan/ton. The seawater is directly used for heat exchange by the water film device, the specific structure of the water film device enables large-area heat exchange to reduce production cost, the temperature of a water film formed on the water film device is high, energy can be saved, and the seawater can be desalinated to reach the daily life using state.

The utility model discloses done great improvement to the evaporimeter, it adopts heat source direct heating water film device to carry out the heat transfer, makes water flow from top to bottom along water film device surface under the action of gravity, forms the large tracts of land water film on the surface of water film device, and the heat exchange is fast, and the energy can be saved reduces the water treatment cost.

The evaporator is used for seawater desalination treatment and waste water evaporation treatment. When the wastewater is treated, steam is directly generated in the water film device, the pressure in the shell of the evaporator does not need high pressure, and the wastewater is collected as secondary water after being treated. The whole equipment has low cost, and the wastewater treatment cost is low.

Drawings

FIG. 1 is a schematic structural view of an embodiment of the evaporator for treating wastewater according to the present invention; FIG. 2 is a schematic sectional view A-A of FIG. 1, in which the water membrane unit 4 is a rectangular unit formed by several solid cylinders arranged in a horizontal direction;

FIG. 3 is a schematic structural diagram of a second embodiment of the wastewater treatment system of the present invention; FIG. 4 is a schematic sectional view of the water membrane unit 4 shown in FIG. 3, which is a rectangular water membrane unit formed by a plurality of rectangular plates;

FIG. 5 is a schematic view of a third embodiment of the evaporator for wastewater treatment according to the present invention; FIG. 6 is a schematic sectional view of the water membrane unit 4 shown in FIG. 5, which is a rectangular water membrane unit formed by vertically arranging a plurality of solid cylinders;

FIG. 7 is a schematic structural view of an embodiment of the apparatus used in the desalination treatment of sea water according to the present invention; FIG. 8 is a schematic sectional view of the water membrane apparatus 4 shown in FIG. 7, which is a rectangular water membrane apparatus with several solid columns arranged in the horizontal direction;

FIG. 9 is a schematic structural view of a second embodiment of the apparatus for desalinating seawater according to the present invention; FIG. 10 is a schematic sectional view of section E-E of FIG. 9, showing the water sheeting apparatus 4 in the form of a plurality of rectangular sheets arranged in a rectangular configuration;

FIG. 11 is a schematic structural view of a third embodiment of the apparatus for desalinating seawater according to the present invention; FIG. 12 is a schematic sectional view of F-F in FIG. 11, in which the water membrane unit 4 is vertically arranged in a rectangular shape by using a plurality of solid cylinders;

in the figure, 1 is a shell, 2 is a water inlet pipe, 3 is a water distributor, 4 is a water film device, 5 is a heat source outlet pipe, 6 is a concentrated water collecting box, 7 is a water outlet pipe, 8 is a purified water recoverer, 9 is a vapor-liquid mixing pipe, 10 is a vapor outlet pipe, 11 is a shell support frame, 12 is a heat source inlet pipe, 15 is a heat source inlet pipe valve, 16 is a water inlet pipe valve, 17 is a heat source outlet pipe valve, 18 is a water outlet pipe valve, 19 is a purified water recoverer outlet pipe, 20 is a flash tank, 21 is a flash tank outlet pipe, and 22 is a flash tank outlet pipe valve.

Detailed Description

The utility model provides a pair of water treatment evaporator, including casing 1, installation water film device 4 in the casing 1, casing 1 installation inlet tube 2, the play water end and the water-locator 3 of inlet tube 2 are connected, water-locator 3 is located water film device 4 top, water film device 4 is arranged into the rectangle by several cylinders or board, the length and the width of water film device 4 are less than the length and the width of water-locator 3, 1 side-mounting heat source inlet pipe of casing, 1 opposite side installation heat source exit tube 5 of casing, install outlet pipe 7 on the casing 1 of water film device 4 bottom. The evaporator of the utility model can be used for sea water desalination or wastewater treatment. The heat source is hot air or flue gas, so that the structures of hot steam, heat-conducting medium and heat-conducting medium are omitted, and the cost of seawater desalination can be greatly reduced. When the method is used for wastewater treatment, the wastewater treatment cost is greatly reduced.

The preferred scheme is as follows: the bottom end of the water film device 4 is provided with a concentrated water collecting box 6, the concentrated water collecting box 6 is in a taper shape, the large-diameter port of the concentrated water collecting box 6 is positioned at the bottom of the water film device 4 and is connected with the inner wall of the shell 1, and the bottom end of the concentrated water collecting box 6 is connected with a water outlet pipe 7. The preferred scheme is favorable for concentrated drainage of the concentrated water, keeps the flowability of the concentrated water, and can avoid the situation that the concentrated water is accumulated and scales in large quantity due to poor flowability of the concentrated water at the part of the concentrated water collecting box 6 far away from the water outlet pipe 7. The concentrated water collecting box 6 is connected with the inner wall of the shell 1, and other supporting pieces do not need to be additionally arranged in the shell 1, so that the flowing dead angle in the shell 1 can be reduced, the air flow resistance can be reduced, and the phenomenon of concentrated water hardening can be reduced. In addition to the above preferred embodiments, the concentrate collection tank 6 may also be in the form of a flat-bottomed rectangle with a cofferdam or other suitable shape. The concentrated water collecting tank 6 may be mounted and fixed in various manners, for example, supported at the bottom of the housing by a bracket provided therebelow. In the wastewater treatment, part of water in the concentrated water collection tank can be returned to the water inlet pipe for reuse through a pipeline. The concentrated water collecting box 6 is arranged, so that seawater is heated by the water film device to form a film and then directly flows into the tank and then enters the flash tank, and the shell can be made of common carbon steel without titanium alloy or other corrosion-resistant noble metals by the concentrated water collecting box 6, so that the cost can be greatly reduced.

The utility model discloses preferred further scheme is: the several cylinders of water film device 4 are solid cylinders, and the length direction one end of every cylinder all is arranged in water-locator 3 below, and the solid cylinder other end is located the casing bottom, and water-locator 3 spun water is covered with solid cylinder surface along the upper end of cylinder downwards, and the structure shown in figure 5 and figure 11 is that the utility model discloses preferred structure. The seawater can flow downwards along one end of the solid column after being sprayed out by the water distributor, so that the water film is fully distributed on the whole outer surface of the solid column, and the flowing speed of the water under the action of gravity is consistent with the speed of forming the water film.

The solid cylinder used in the evaporator can be arranged into a rectangle or a plurality of rectangular plates or rectangular plates, and the solid cylinder or the plates with various shapes are made of metal, ceramic, glass or other suitable materials. Because the heat source is adopted to directly heat the water film device for heat exchange, the water film is directly generated on the surface of the solid cylinder, the solid cylinder does not need to be connected and sealed with other parts, and factors such as the sealing performance, the expansion coefficient and the like do not need to be considered, therefore, the solid cylinder can be preferably made of non-metal materials with strong corrosion resistance, such as ceramics, glass and the like. These corrosion resistant materials are advantageous for extending the life of the evaporator compared to metallic materials.

The arrangement of the solid columns of the water film apparatus in the evaporator may be such that the columns are arranged in a horizontal direction, for example, as shown in fig. 1 and 7.

The utility model is used for be connected the play water end of outlet pipe 7 with the flash vessel during sea water desalination, the mixed exit tube of top installation vapour-liquid of flash vessel, the export and the water purification recoverer of the mixed exit tube of vapour-liquid are connected.

Water distributor below is arranged in to water film device's solid cylinder one end, and the solid cylinder other end is located the casing bottom, and several solid cylinder is arranged and is the rectangle, and the length and the width of water distributor are the same with the rectangle length and the width after the solid cylinder is arranged, and this kind of method can make the sea water follow solid cylinder one end after by the water distributor blowout and flow downwards, makes the water film cover the whole surface of solid cylinder, and the speed that water flowed under the effect of gravity is unanimous with the speed that forms the water film.

Claims

1. A water treatment evaporator characterized by: the water distributor comprises a shell (1), a water film device (4) is installed in the shell (1), a water inlet pipe (2) is installed in the shell (1), the water outlet end of the water inlet pipe (2) is connected with a water distributor (3), the water distributor (3) is located above the water film device (4), the water film device (4) is arranged into a rectangle by a plurality of column pipes or plates, the length and the width of the water film device (4) are smaller than those of the water distributor (3), a heat source inlet pipe is installed on one side of the shell (1), a heat source outlet pipe (5) is installed on the other side of the shell (1), and a water outlet pipe (7) is installed on the shell (1) at the bottom of the.

2. A water treatment evaporator as set forth in claim 1 wherein: the bottom end of the water film device (4) is provided with a concentrated water collecting box (6), the concentrated water collecting box (6) is in a conical shape, the large-diameter port of the concentrated water collecting box (6) is positioned at the bottom of the water film device (4) and is connected with the inner wall of the shell (1), and the bottom end of the concentrated water collecting box (6) is connected with a water outlet pipe (7).

3. A water treatment evaporator as set forth in claim 1 wherein: the water film device (4) has solid columns, one end of each column in the length direction is arranged below the water distributor (3), and water sprayed from the water distributor (3) is distributed on the surfaces of the solid columns along the upper ends of the columns.

4. A water treatment evaporator as set forth in claim 1 wherein: the water outlet end of the water outlet pipe (7) is connected with the flash evaporator, the top end of the flash evaporator is provided with a vapor-liquid mixing outlet pipe, and the outlet of the vapor-liquid mixing outlet pipe is connected with the purified water recoverer.