Evaporative crystallization salt leg device
By designing an evaporation crystallization salt leg device and using multi-way washing pipes and hot water or low-pressure steam flushing, the blockage problem caused by the accumulation of crystallized salt at the bottom of the separator was solved, and the smooth discharge of crystallized salt and the stable operation of the device were achieved.
Patent Information
- Application Number
- CN202421557055.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-03
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-07-03
AI Technical Summary
During the evaporation and crystallization process, crystallized salt accumulates at the bottom of the separator, which can easily cause blockage. Existing devices are difficult to effectively prevent large amounts of crystallized salt from precipitating and clogging the crystallization salt legs and salt outlet pipes.
An evaporation crystallization salt leg device was designed, which included a crystallization salt leg cylinder, a slurry discharge pipe, a backwash pipe, an elutriation pipe and an observation mirror. Multi-channel elutriation pipes were used for elutriation, combined with hot water or low-pressure steam flushing to prevent the crystallized salt from caking.
It effectively prevents the crystallized salt from compacting inside the salt legs, avoids blockage, and ensures the smooth discharge of crystallized salt and the normal operation of the device.
Smart Images
Figure CN223351011U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of evaporation crystallization, in particular to an evaporation crystallization salt leg device. Background Art
[0002] In the evaporation crystallization process, as the concentration of brine increases with the progress of evaporation and concentration, when the salt concentration reaches the saturation concentration, crystallized salt will gradually precipitate. The crystallized salt will gather at the bottom of the separator due to the density of the salt particles. For this reason, it is necessary to set a crystallization salt leg at the bottom of the evaporation separator to collect the precipitated crystallized salt particles.
[0003] On the one hand, the crystallization salt legs should have space for crystal growth and aggregation, and on the other hand, they should prevent a large amount of crystallized salt from precipitating and clogging the crystallization salt legs and salt outlet pipes. Utility Model Content
[0004] The purpose of the present invention is to provide a salt evaporation crystallization device to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an evaporation crystallization salt leg device, comprising a crystallization salt leg cylinder, the top of the crystallization salt leg cylinder is provided with a crystallization salt leg inlet, and the bottom of the crystallization salt leg cylinder is provided with a slurry discharge pipe and a recoil pipe from top to bottom, one end of the slurry discharge pipe is placed inside the crystallization salt leg cylinder, the other end of the slurry discharge pipe is provided with a discharge pipe opening, one end of the recoil pipe is connected to the inner wall of the crystallization salt leg cylinder, the other end of the recoil pipe is provided with a recoil opening, and the other end of the slurry discharge pipe and the other end of the recoil pipe are both placed outside the crystallization salt leg cylinder, a flushing pipe is connected to the pipe wall of the other end of the slurry discharge pipe, a sewage outlet is provided at the bottom of the crystallization salt leg cylinder, and the interior of the crystallization salt leg cylinder is provided with a second elutriation pipe, a third elutriation pipe and a first elutriation pipe in sequence from top to bottom, and the bottom of the second elutriation pipe, the bottom of the third elutriation pipe and the bottom of the first elutriation pipe are provided with a second diameter expansion opening, a third diameter expansion opening and a first diameter expansion opening respectively.
[0006] Preferably, an observation mirror is installed at the bottom of the outer wall of the crystal salt leg cylinder, and the observation mirror is set at the same elevation as the feed port of the slurry discharge pipe, and the specification of the observation mirror is φ100~150mm.
[0007] Preferably, a flushing port is provided at one end of the flushing pipe.
[0008] Preferably, the aspect ratio of the crystal salt leg cylinder is 4.5 to 6.5.
[0009] Preferably, the slurry discharge pipe is in the form of an upward oblique mouth, the spacing ratio of the washing tube two, washing tube three and washing tube one is 2:1, the distance from the outlet of washing tube three to the feed oblique mouth of the slurry discharge pipe is 200-300mm, the distance from the outlet of washing tube one to the bottom of the crystal salt leg cylinder is 200-300mm, and the downward inclination angle α of the slurry discharge pipe is 45~60°.
[0010] Preferably, the bottom cone angle β of the crystallization salt leg cylinder is 60°, the inlet pressure of the washing tube 2, the washing tube 3 and the washing tube 1 is 0.15~0.35MPa, and the diameter of the expansion port 2, the diameter of the expansion port 3 and the diameter of the expansion port 1 are 1.5~2.5 times the diameter of the washing tube 2, the diameter of the washing tube 3 and the diameter of the washing tube 1.
[0011] Compared with the prior art, the beneficial effects of the present invention are:
[0012] The utility model fully considers the volume to meet the growth and aggregation of crystals, and at the same time sets multiple washing pipes for washing, so that the crystallized salt is fluidized inside the salt leg, thereby avoiding the blockage caused by the crystallized salt solidification. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural diagram of the present utility model.
[0014] In the figure: 1. Crystallization salt leg inlet; 2. Crystallization salt leg cylinder; 3. Discharge pipe; 4. Flushing pipe; 5. Elutriation pipe 2; 6. Elutriation pipe 3; 7. Elutriation pipe 1; 8. Expansion port 1; 9. Backwash port; 10. Sewage outlet; 11. Expansion port 2; 12. Expansion port 3; 13. Observation mirror; 14. Slurry discharge pipe; 15. Backwash pipe. DETAILED DESCRIPTION
[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.
[0016] See also Figure 1The utility model provides an evaporation crystallization salt leg device, including a crystallization salt leg cylinder 2, a crystallization salt leg inlet 1 is provided on the top of the crystallization salt leg cylinder 2, a slurry discharge pipe 14 and a backwash pipe 15 are provided on the bottom of the crystallization salt leg cylinder 2 from top to bottom, one end of the slurry discharge pipe 14 is placed inside the crystallization salt leg cylinder 2, and the other end of the slurry discharge pipe 14 is provided with a discharge pipe port 3, one end of the backwash pipe 15 is communicated with the inner wall of the crystallization salt leg cylinder 2, and the other end of the backwash pipe 15 is provided with a backwash port 9, The other ends of the slurry discharge pipe 14 and the other ends of the backwash pipe 15 are both placed outside the crystallization salt leg cylinder 2. The other end of the slurry discharge pipe 14 is connected to the wall of the pipe 4. A sewage outlet 10 is provided at the bottom of the crystallization salt leg cylinder 2. The interior of the crystallization salt leg cylinder 2 is sequentially provided with elutriation pipe 2 5, elutriation pipe 3 6, and elutriation pipe 1 7 from top to bottom. The bottoms of elutriation pipe 2 5, elutriation pipe 3 6, and elutriation pipe 1 7 are respectively provided with expansion port 2 8, expansion port 3 11, and expansion port 12. The backwash port 9 and sewage outlet 10 are provided for the occasional discharge of crystallization residues and backwashing of the crystallization salt leg. Backwashing uses hot water or low-pressure steam.
[0017] An observation mirror 13 is installed at the bottom of the outer wall of the crystallization salt leg cylinder 2, and the observation mirror 13 is set at the same elevation as the feed port of the slurry discharge pipe 14. The specification of the observation mirror 13 is φ100-150mm. The observation mirror 13 is used to observe the salt accumulation of the crystallization salt leg.
[0018] One end of the flushing pipe 4 is provided with a flushing port. Hot water or low-pressure steam is used for flushing to clear the slurry discharge pipe 14.
[0019] The aspect ratio of the crystal salt leg cylinder 2 is 4.5 to 6.5.
[0020] The slurry discharge pipe 14 adopts an upward slanted form and feeds from the central axis of the salt leg; the spacing ratio of the washing tube 2 5, the washing tube 3 6 and the washing tube 1 7 is 2:1, the distance from the outlet of the washing tube 3 6 to the feed slant of the slurry discharge pipe 14 is 200-300mm, the distance from the outlet of the washing tube 1 7 to the bottom of the crystallization salt leg cylinder 2 is 200-300mm, and the downward inclination angle α of the slurry discharge pipe 14 is 45~60°.
[0021] The bottom cone angle β of the crystallization salt leg cylinder 2 is 60°, the inlet pressure of the washing tube 2 5, the washing tube 3 6 and the washing tube 1 7 is between 0.15 and 0.35 MPa, and the diameters of the expansion port 2 8, the expansion port 3 11 and the expansion port 1 12 are 1.5 to 2.5 times the diameters of the washing tube 2 5, the washing tube 3 6 and the washing tube 1 7.
[0022] When the embodiment of the present application is in use: the crystallization salt leg cylinder 2 is connected to the bottom of the crystallization evaporator in the form of a flange, and the solution that is concentrated to saturation and begins to crystallize enters from the crystallization salt leg inlet 1, and the precipitated fine crystals are gathered and grown in the crystallization salt leg cylinder 2. When the solid content in the crystallization salt leg reaches a certain level, the slurry is discharged from the discharge pipe port 3, and the slurry discharge pipe 14 adopts an upward slanted form inside the salt leg and feeds from the central axis of the salt leg; an observation mirror 13 with a cleaning port is provided at an elevation equal to the feed port of the slurry discharge pipe 14 to observe the salt accumulation in the crystallization salt leg; a flushing pipe 4 is provided at the end of the slurry discharge pipe 14, and hot water or low-pressure steam is used for flushing to clear the blockage of the slurry discharge pipe 14. A second washing tube 5, a third washing tube 6 and a first washing tube 7 are provided on the crystallization salt leg cylinder 2, and washing is performed using crystallization mother liquor or evaporation crystallization feed liquid. The built-in second washing tube 5, third washing tube 6 and first washing tube 7 adopt a unique form, and expansion ports 2 8, third expansion ports 11 and first expansion ports 12 are provided at the ends of the second washing tube 5, third washing tube 6 and first washing tube 7.
[0023] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. An evaporation crystallization salt leg device, comprising a crystallization salt leg cylinder (2), characterized in that: The top of the crystallization salt leg cylinder (2) is provided with a crystallization salt leg inlet (1), and the bottom of the crystallization salt leg cylinder (2) is provided with a slurry discharge pipe (14) and a backwash pipe (15) from top to bottom, one end of the slurry discharge pipe (14) is placed inside the crystallization salt leg cylinder (2), and the other end of the slurry discharge pipe (14) is provided with a discharge pipe opening (3), one end of the backwash pipe (15) is communicated with the inner wall of the crystallization salt leg cylinder (2), and the other end of the backwash pipe (15) is provided with a backwash opening (9), and the other end of the slurry discharge pipe (14) and the backwash opening (3) are connected. The other end of the flushing pipe (15) is placed outside the crystallization salt leg cylinder (2), the wall of the other end of the slurry discharge pipe (14) is connected to a flushing pipe (4), the bottom of the crystallization salt leg cylinder (2) is provided with a sewage outlet (10), the interior of the crystallization salt leg cylinder (2) is provided with a second washing pipe (5), a third washing pipe (6) and a first washing pipe (7) in sequence from top to bottom, and the bottom of the second washing pipe (5), the bottom of the third washing pipe (6) and the bottom of the first washing pipe (7) are respectively provided with a second diameter expansion port (8), a third diameter expansion port (11) and a first diameter expansion port (12).
2. The evaporation and crystallization salt leg device according to claim 1, characterized in that: An observation mirror (13) is installed at the bottom of the outer wall of the crystal salt leg cylinder (2), and the observation mirror (13) is set at the same elevation as the feed port of the slurry discharge pipe (14). The specification of the observation mirror (13) is φ100-150mm.
3. The evaporation and crystallization salt leg device according to claim 1, characterized in that: One end of the flushing pipe (4) is provided with a flushing port.
4. The evaporation and crystallization salt leg device according to claim 1, characterized in that: The aspect ratio of the crystal salt leg cylinder (2) is 4.5 to 6.
5.
5. The evaporation and crystallization salt leg device according to claim 4, characterized in that: The slurry discharge pipe (14) is in the form of an upwardly inclined mouth, the spacing ratio of the washing tube 2 (5), the washing tube 3 (6) and the washing tube 1 (7) is 2:1, the distance from the outlet of the washing tube 3 (6) to the feed inclined mouth of the slurry discharge pipe (14) is 200-300 mm, the distance from the outlet of the washing tube 1 (7) to the bottom of the crystal salt leg cylinder (2) is 200-300 mm, and the downward inclination angle α of the slurry discharge pipe (14) is 45-60°.
6. The evaporation and crystallization salt leg device according to claim 1, characterized in that: The bottom cone angle β of the crystallization salt leg cylinder (2) is 60°, the inlet pressures of the washing tube 2 (5), the washing tube 3 (6) and the washing tube 1 (7) are between 0.15 and 0.35 MPa, and the diameters of the expansion port 2 (8), the expansion port 3 (11) and the expansion port 1 (12) are 1.5 to 2.5 times the diameters of the washing tube 2 (5), the washing tube 3 (6) and the washing tube 1 (7).