CN214611632U - High-thermal-conductivity waste water evaporator - Google Patents

Abstract

The utility model relates to a high thermal conductivity waste water evaporator, including the evaporation cauldron, locate in the evaporation cauldron and the heat exchange tube of inside mobile waste water, the inside equal fixedly connected with in evaporation cauldron length direction both ends carries out the spaced tube sheet with the evaporation cauldron, the heat exchange tube communicates in the tube sheet, the heat exchange tube is the bellows, evaporation cauldron length direction both ends communicate respectively has feed liquor pipe and drain pipe, the evaporation cauldron intercommunication has inlet tube and play steam pipe, inlet tube and play steam pipe are located between two tube sheets, the outer wall area increase of the heat exchange tube that is the bellows has, make under the same condition of flow in the heat exchange tube, waste water and steam can carry out the area of heat exchange and obtain the increase in the bellows, heat conduction efficiency has been promoted then, make waste water more easily by the effect of evaporation.

Description

High-thermal-conductivity waste water evaporator

Technical Field

The application relates to the field of wastewater evaporators, in particular to a high-thermal-conductivity wastewater evaporator.

Background

Waste water treatment needs to be evaporated, the waste water treatment is divided into desalinated water and concentrated crystal slurry, the desalinated water is recycled, the concentrated crystal slurry is crystallized and then is subjected to incineration treatment, the evaporation of general waste water is performed through an evaporator, the types of the evaporators are many, but the waste water is introduced into a heat exchange tube, and then the steam is introduced into a chamber where the heat exchange tube is located to heat and evaporate the waste water in the heat exchange tube.

The existing evaporator for high-concentration salt-containing organic wastewater is disclosed as CN207511862U and comprises an evaporation chamber, a spraying pipeline, a steam buffer tank, a hot well and a sand replenishing tank; the evaporation chamber comprises a heat exchange tube bundle, an evaporation chamber cylinder, a defoaming device, a steam tube box and a purging pipeline; the heat exchange tube bundle consists of a plurality of heat exchange tubes and is horizontally arranged at the lower part in the cylinder body of the evaporation chamber; the steam buffer tank comprises a manhole and a flushing pipeline, and is connected with the evaporation chamber through a flange and arranged on a secondary steam outlet of the evaporation chamber; the manhole is arranged at the position close to the evaporation chamber below the steam buffer tank; the flushing pipeline is provided with a spray head, and the flushing spray head is arranged at the upper end of the demister of the evaporation chamber.

In view of the above-mentioned related technologies, the inventor believes that the evaporated material is sprayed to the surface of the heat exchange tube and exchanges heat with the steam inside the heat exchange tube, the maximum contact area is the circumferential surface of the heat exchange tube, the contact area is small, and the defect of low heat conduction efficiency of the heat exchange tube exists.

SUMMERY OF THE UTILITY MODEL

In order to promote heat transfer pipe thermal conductivity efficiency, this application provides a high heat conductivity waste water evaporator.

The application provides a high heat conductivity waste water evaporator adopts following technical scheme:

the utility model provides a high heat conductivity waste water evaporator, includes the evaporation cauldron, locates in the evaporation cauldron and the heat exchange tube of the inside waste water that flows, the inside equal fixedly connected with in evaporation cauldron length direction both ends carries out the spaced tube sheet with the evaporation cauldron, and the heat exchange tube communicates in the tube sheet, and the heat exchange tube is the bellows, and evaporation cauldron length direction both ends communicate respectively has feed liquor pipe and drain pipe, and the evaporation cauldron intercommunication has inlet tube and play steam pipe, and inlet tube and play steam pipe are located between two tube sheets.

Through adopting above-mentioned technical scheme, bellows compare in general pipe under the same flow, have increased the heat transfer area between steam and the waste water, then make heat conduction efficiency obtain promoting, evaporation efficiency also obtains promoting along with one.

Preferably, the end, far away from the evaporation kettle, of the liquid outlet pipe is communicated with a separation kettle, the top of the separation kettle is communicated with a steam return pipe, one end, close to the steam return pipe and the steam inlet pipe, of the steam return pipe is provided with a three-way valve, one end, far away from the steam return pipe and the steam inlet pipe, of the three-way valve is communicated with a steam input pipe, the separation kettle is communicated with a final liquid outlet pipe, and the final liquid outlet pipe is provided with a final liquid outlet valve.

Through adopting above-mentioned technical scheme, make the steam that the evaporation produced in the heat exchange tube get into to the separation cauldron with the waste water separation back, get into to the admission pipe through return-steam pipe and three-way valve, then can carry out a comparatively effectual reutilization to the produced steam of waste water evaporation, the setting of three-way valve is when evaporation work is carried out at the beginning simultaneously, can be through steam input pipe input steam in to the admission pipe, and steam can not get into to the intake pipe in the steam pressure value undersize separating valve in the separating valve, changeable three-way valve, make admission pipe and steam input valve be linked together, make the steam in the evaporation cauldron difficult pouring enter into to the return-steam pipe.

Preferably, the bottom of the separation kettle is communicated with a waste water return pipe, a waste water return pump is arranged on a waste water return pipe body, one end, far away from the separation kettle, of the waste water return pipe is communicated with a liquid inlet pipe, and a waste water return valve is arranged on the waste water return pipe.

Through adopting above-mentioned technical scheme, the solution that does not reach the requirement in the separation cauldron can carry out evaporation treatment once more in returning waste water pipe backward flow to the feed liquor pipe under the drive of waste water pump to waste water carries out a comparatively complete evaporation treatment.

Preferably, the heat exchange tubes are arranged in a plurality of groups along the width direction of the evaporation kettle, a group of baffle plates are arranged on the close side surfaces of the two tube plates, the two groups of baffle plates are arranged in a staggered and inserted manner, the steam inlet tubes and the steam outlet tubes are in one-to-one correspondence and are respectively located at two ends of the width direction of the evaporation kettle, and the baffle plates are fixedly connected to the inner wall of the upper part and the inner wall of the lower part of the evaporation kettle.

Through adopting above-mentioned technical scheme for steam that gets into to the evaporation kettle from the admission pipe can be snakelike flow on the horizontal plane, makes then that steam is difficult for the excessive speed to get into and discharge in the steam outlet pipe, makes steam and waste water have enough long time to carry out a heat exchange, promotes heat conduction efficiency and evaporation efficiency.

Preferably, the baffle plates are fixedly connected with a support rod capable of abutting against the bottom of the heat exchange tube, and the upper surface of the support rod is provided with a circular arc-shaped support groove.

Through adopting above-mentioned technical scheme for under the longer condition of heat exchange tube, the heat exchange tube is difficult for bearing the great gravity of self and waste water, is difficult for taking place deformation, prolongs the life of heat exchange tube, supports the groove simultaneously and laminates in the bottom surface of the heat exchange tube that is the bellows for pressure between heat exchange tube and the bracing piece can not be too big, promotes the stability of heat exchange tube and also can reduce the pressure effect that the heat exchange tube received the bracing piece.

Preferably, the inner wall of the bottom of the evaporation kettle is provided with a plurality of flow guide blocks, each flow guide block is positioned between two flow guide blocks, the upper surface of each flow guide block is inclined, the lowest point of the upper surface of each flow guide block is close to the flow guide plate close to the steam outlet pipe, the positions of the two adjacent flow guide blocks at one end of the distance between the flow guide plate and the pipe plate are fixedly connected with connecting blocks, and the upper surfaces of the connecting blocks are parallel to the inclined direction of the upper surfaces of the close flow guide blocks.

Through adopting above-mentioned technical scheme, the comdenstion water that produces in the evaporation kettle can flow and finally flow into to the play steam pipe under the action of self gravity along the upper surface of water conservancy diversion piece for difficult accumulation has the unable discharge of more comdenstion water in the evaporation kettle, reduces the residue of comdenstion water in the evaporation kettle simultaneously, makes the comdenstion water intensification need absorptive heat to diminish, makes then more heat can be absorbed by the waste water in the heat exchange tube, helps promoting heat conduction efficiency.

Preferably, the steam outlet pipe is communicated with a condenser, one side of the condenser, which is far away from the steam outlet pipe, is communicated with a water storage tank, the water storage tank is communicated with a flushing pipe, a flushing water pump is arranged on a pipe body of the flushing pipe, one end, which is far away from the water storage tank, of the flushing pipe is communicated with a liquid inlet pipe, and the flushing pipe is provided with a flushing valve.

Through adopting above-mentioned technical scheme, can carry out a washing to evaporation kettle and heat exchange tube inside in sending into the feed liquor pipe with the comdenstion water through the sparge water pump for after changing the kind of the waste water that needs to handle, can not remain more waste water of processing before in evaporation kettle and the heat exchange tube, make difficult emergence reaction between the different waste water kinds, make then that the scale deposit volume reduces in evaporation kettle and the heat exchange tube.

Preferably, one end of the flushing pipe communicated with the water storage tank is provided with a filter screen.

Through adopting above-mentioned technical scheme for in the difficult entering evaporation cauldron of more impurity that probably exists in the water storage tank and the heat exchange tube, the scale deposit volume in reduction evaporation cauldron and the heat exchange tube.

In summary, the present application includes at least one of the following benefits:

compared with a common circular pipe, the corrugated pipe increases the heat exchange area between steam and waste water under the same flow, so that the heat conduction efficiency is improved, and the evaporation efficiency is improved along with the heat conduction efficiency;

sending the comdenstion water into through the sparge water pump and can carrying out a washing to evaporation kettle and heat exchange tube inside in the feed liquor pipe for after changing the kind of the waste water that needs to handle, can not remain more waste water of handling before in evaporation kettle and the heat exchange tube, make difficult emergence reaction between the different waste water kind, make then in evaporation kettle and the heat exchange tube scale deposit volume reduce.

Drawings

FIG. 1 is a schematic diagram of the main structure of the present application;

FIG. 2 is a cross section of a half arc end surface of an evaporation kettle along the length direction of the evaporation kettle to show the structure inside the evaporation kettle;

FIG. 3 is an enlarged view at A in FIG. 2;

fig. 4 is a schematic structural diagram of the evaporation kettle in fig. 2, which is close to one end of the liquid inlet pipe and has the pipe plate and the end face of the evaporation kettle removed to show another view angle of the flow guide block and the connecting block.

Description of reference numerals: 1. evaporating the kettle; 11. a water pump is flushed; 12. flushing the valve; 13. a filter screen; 14. a final liquid outlet pipe; 15. a final liquid outlet valve; 16. connecting blocks; 2. a heat exchange pipe; 21. returning to a waste water pipe; 22. returning to a waste water valve; 23. a baffle plate; 24. a support bar; 25. a support groove; 26. a flow guide block; 27. a condenser; 28. a water storage tank; 29. a flush tube; 3. a tube sheet; 31. a liquid inlet pipe; 32. a liquid outlet pipe; 33. a steam inlet pipe; 34. a steam outlet pipe; 35. a separation kettle; 36. a steam return pipe; 37. a three-way valve; 38. a steam input pipe; 39. returning to the waste water pump.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The embodiment of the application discloses a high-thermal-conductivity waste water evaporator, referring to fig. 1 and fig. 2, comprising an evaporation kettle 1 with a cylindrical outer part, wherein two ends of the evaporation kettle 1 in the length direction are respectively and fixedly connected with a liquid inlet pipe 31 and a liquid outlet pipe 32 which are communicated with each other in a one-to-one correspondence manner, two ends of the evaporation kettle 1 in the length direction are respectively and fixedly connected with a vertical pipe plate 3, the pipe plate 3 is perpendicular to the length direction of the evaporation kettle 1, the evaporation kettle 1 is internally divided into three spaces by the two pipe plates 3, a plurality of heat exchange pipes 2 are fixedly connected between the two pipe plates 3, the heat exchange pipes 2 are corrugated pipes, the length direction of the heat exchange pipes 2 is parallel to the length direction of the evaporation kettle 1, the lower part of the evaporation kettle 1 is fixedly connected with a steam inlet pipe 33 and a steam outlet pipe 34 which are communicated with each other, the steam inlet pipe 33 and the steam outlet pipe 34 are respectively close to two ends of the evaporation kettle 1 in the width direction, the steam inlet pipe 33 and the steam outlet pipe 34 are respectively located at two ends of the evaporation kettle 1 in the length direction, the two ends of the evaporation kettle 1 in the width direction are the two horizontal radial ends of the evaporation kettle 1.

Referring to fig. 2 and 3, a group of vertical baffle plates 23 are fixedly connected to the adjacent vertical side surfaces of two tube plates 3, the length direction of the baffle plates 23 is parallel to the length direction of the evaporation kettle 1, the two groups of baffle plates 23 are arranged in a staggered insertion manner, the upper surface and the lower surface of each baffle plate 23 are respectively and correspondingly fixedly connected to the upper inner wall and the lower inner wall of the evaporation kettle 1, two baffle plates 23 are uniformly arranged along the horizontal radial direction of the evaporation kettle 1, a steam outlet pipe 34 and a steam inlet pipe 33 are respectively close to the respective adjacent baffle plates 23 and fixedly connected to one end of the tube plate 3, so that steam entering the evaporation kettle from the steam outlet pipe 34 can flow between the baffle plates 23 for a long time, the vertical side surfaces of the baffle plates 23 in the length direction are fixedly connected with support rods 24, the length direction of the support rods 24 is parallel to the horizontal radial direction of the evaporation kettle 1, and the upper surfaces of the support rods 24 are provided with support grooves 25 with circular arc-shaped vertical cross sections, the heat exchange tube 2 can be attached to the inner wall of the support groove 25, as shown in fig. 4, the inner wall of the bottom of the evaporation kettle 1 is fixedly connected with a plurality of diversion blocks 26, the length direction of the diversion blocks 26 is parallel to the length direction of the evaporation kettle 1, the diversion blocks 26 are fixedly connected to the baffle plates 23, each baffle plate 23 is located between two diversion blocks 26, the upper surface of each diversion block 26 is inclined, one side of each diversion block 26, which is close to the steam outlet pipe 34, is a low point, the adjacent diversion block 26 is fixedly connected with the connection block 16, which is close to the position where one end of the baffle plate 23 and the pipe plate 3 have a distance therebetween, the upper surface of the connection block 16 is inclined, the inclined direction of the upper surface of the connection block 16 is parallel to the inclined direction of the upper surface of the adjacent diversion block 26, so that the condensed water on the diversion blocks 26 can flow between the plurality of baffle plates 23 and enter the steam outlet pipe 34.

Referring to fig. 1 and 2, one end of a liquid outlet pipe 32 far from an evaporation kettle 1 is fixedly connected with a separation kettle 35 communicated with each other, the bottom of the separation kettle 35 is fixedly connected with a final liquid outlet pipe 14 communicated with each other, one end of the final liquid outlet pipe 14 near the separation kettle 35 is provided with a final liquid outlet valve 15, the vertical side surface of the upper part of the separation kettle 35 is fixedly connected with a steam return pipe 36 communicated with each other, one end of the steam return pipe 36 close to the steam inlet pipe 33 is fixedly connected with a three-way valve 37 communicated with each other, one end of the three-way valve 37 far from the steam return pipe 36 and one end of the steam inlet pipe 33 is fixedly connected with a steam input pipe 38 communicated with each other, the three-way valve 37 can control the steam inlet pipe 33 and the steam return pipe 36 to be communicated with each other or the steam inlet pipe 33 and the steam input pipe 38 to be communicated with each other, the bottom of the separation kettle 35 is fixedly connected with a waste water return pipe 21 communicated with each other, a waste water return pump 39 is installed at the pipe 21, the waste water pump 39 is a high temperature resistant water pump, one end of the waste water return pipe 21 far from the separation kettle 35 is fixedly connected with and communicated with the liquid inlet pipe 31, the waste water returning pipe 21 is provided with a waste water returning valve 22 at one end close to the liquid inlet pipe 31.

Referring to fig. 1 and 2, a condenser 27 is fixedly connected to the steam outlet pipe 34, a water storage tank 28 is communicated to the bottom of the condenser 27, condensed water in the condenser 27 enters the upper portion of the water storage tank 28, a flushing pipe 29 is fixedly connected to the bottom of the water storage tank 28, a filter screen 13 (not shown) is fixedly connected to an opening of the flushing pipe 29 near one end of the water storage tank 28, a flushing water pump 11 is installed on a pipe body of the flushing pipe 29, one end of the flushing pipe 29 far away from the water storage tank 28 is fixedly connected and communicated with a liquid inlet pipe 31, and a flushing valve 12 is installed at one end of the flushing pipe 29 near the liquid inlet pipe 31.

The application principle of the high-thermal-conductivity waste water evaporator provided by the embodiment of the application is as follows: the waste water enters the evaporation kettle 1 from the liquid inlet pipe 31 and enters the heat exchange pipe 2, the steam input pipe 38 sends steam into the evaporation kettle 1 through the steam inlet pipe 33, so that the waste water in the heat exchange pipe 2 exchanges heat with the steam outside the heat exchange pipe 2 and evaporates, the steam and the waste water in the heat exchange pipe 2 enter the separation kettle 35 together, the waste water is gathered at the bottom of the separation kettle 35, the steam is stored at the upper part of the separation kettle 35, when the steam pressure in the separation kettle 35 is enough, the steam return pipe 36 is communicated with the steam inlet pipe 33 through the three-way valve 37, so that the steam in the separation kettle 35 enters the evaporation kettle 1, the waste water in the separation kettle 35 can enter the evaporation kettle 1 and the heat exchange pipe 2 again through the waste water return pump 39 for re-evaporation, the waste water is discharged through the final liquid outlet pipe 14 after the waste water evaporation treatment is finished, and the condensed water in the evaporation kettle 1 enters the steam outlet pipe 34 along the upper surface of the diversion block 26, then enters the condenser 27 and finally flows into the water storage tank 28, and after a kind of waste water is treated, the flushing water pump 11 can be started to flush the inside of the evaporation kettle 1 and the heat exchange tube 2 with condensed water.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a high heat conductivity waste water evaporator, includes in evaporation cauldron (1), locates evaporation cauldron (1) and heat exchange tube (2) of inside mobile waste water, its characterized in that: the evaporation kettle (1) is characterized in that the tube plates (3) which are used for separating the evaporation kettle (1) are fixedly connected to the inner portions of the two ends of the length direction of the evaporation kettle (1), the heat exchange tubes (2) are communicated with the tube plates (3), the heat exchange tubes (2) are corrugated tubes, the two ends of the length direction of the evaporation kettle (1) are respectively communicated with a liquid inlet tube (31) and a liquid outlet tube (32), the evaporation kettle (1) is communicated with a steam inlet tube (33) and a steam outlet tube (34), and the steam inlet tube (33) and the steam outlet tube (34) are located between the two tube plates (3).

2. The high thermal conductivity waste water evaporator as set forth in claim 1, wherein: liquid outlet pipe (32) are kept away from evaporation kettle (1) one end intercommunication and are had separation cauldron (35), separation cauldron (35) top intercommunication has steam return pipe (36), and steam return pipe (36) and the close one end of admission pipe (33) are equipped with three-way valve (37), and steam return pipe (36) and admission pipe (33) one end intercommunication are kept away from in three-way valve (37) have steam input tube (38), and separation cauldron (35) intercommunication has final drain pipe (14), and final drain pipe (14) are equipped with final liquid valve (15).

3. The high thermal conductivity waste water evaporator as set forth in claim 2, wherein: the bottom of the separation kettle (35) is communicated with a waste water return pipe (21), a waste water return pump (39) is arranged on the pipe body of the waste water return pipe (21), one end, far away from the separation kettle (35), of the waste water return pipe (21) is communicated with the liquid inlet pipe (31), and a waste water return valve (22) is arranged on the waste water return pipe (21).

4. The high thermal conductivity waste water evaporator as set forth in claim 1, wherein: the heat exchange tubes (2) are arranged in groups along the width direction of the evaporation kettle (1), a group of baffle plates (23) are arranged on the close side faces of the two tube plates (3), the two groups of baffle plates (23) are arranged in a staggered and inserted manner, the steam inlet tubes (33) and the steam outlet tubes (34) are in one-to-one correspondence with each other and are respectively located at the two ends of the width direction of the evaporation kettle (1), and the baffle plates (23) are fixedly connected to the inner wall of the upper portion and the inner wall of the lower portion of the evaporation kettle (1).

5. The high thermal conductivity waste water evaporator as set forth in claim 4, wherein: the baffle plate (23) is fixedly connected with a support rod (24) which can be abutted against the bottom of the heat exchange tube (2), and the upper surface of the support rod (24) is provided with a circular arc-shaped support groove (25).

6. The high thermal conductivity waste water evaporator as set forth in claim 4, wherein: the inner wall of the bottom of the evaporation kettle (1) is provided with a plurality of flow guide blocks (26), each baffle plate (23) is positioned between two flow guide blocks (26), the upper surface of each flow guide block (26) is inclined, the lowest point of the upper surface of each flow guide block (26) is close to the baffle plate (23) close to the steam outlet pipe (34), two adjacent flow guide blocks (26) are fixedly connected with connecting blocks (16) at positions with one ends spaced from the baffle plate (23) and the pipe plate (3), and the upper surface of each connecting block (16) is parallel to the inclined direction of the upper surface of the corresponding flow guide block (26).

7. The high thermal conductivity waste water evaporator as set forth in claim 1, wherein: the steam outlet pipe (34) is communicated with a condenser (27), one side, away from the steam outlet pipe (34), of the condenser (27) is communicated with a water storage tank (28), the water storage tank (28) is communicated with a flushing pipe (29), a flushing water pump (11) is arranged on a pipe body of the flushing pipe (29), one end, away from the water storage tank (28), of the flushing pipe (29) is communicated with a liquid inlet pipe (31), and a flushing valve (12) is arranged on the flushing pipe (29).

8. The high thermal conductivity waste water evaporator as set forth in claim 7, wherein: one end of the flushing pipe (29) communicated with the water storage tank (28) is provided with a filter screen (13).

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