Improved device for final concentration device of solid caustic soda system
By setting up a sacrificial plate and baffle in the end-concentrator, combined with the design of the steam heated heating drop-film sleeve, the problems of short service life and dangerous maintenance of the end-concentrator are solved, and the effect of extending service life, improving safety and production stability is achieved.
Patent Information
- Application Number
- CN202421488190.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-06-27
AI Technical Summary
In the existing solid alkali production process system, the production service life of the concentrator is short, and there are dangers during parking and maintenance, resulting in economic losses and safety hazards.
A solid alkali system end-concentrator modification device is designed. By setting sacrificial plates and baffles in the end-concentrator, the service life of the end-concentrator is extended and maintenance safety is improved. At the same time, steam heating and heating of the lowering membrane casing is used to improve the product stability of the solid alkali production system.
It extends the service life of the concentrator, improves maintenance safety and production stability, and reduces the economic losses and production costs of the enterprise.
Smart Images
Figure CN222846460U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of alkali solution concentrators, and is a solid alkali system final concentrator transformation device. Background Art
[0002] In the solid alkali production process system of a certain enterprise, alkali liquid with a concentration of 62.0% is heated to 380℃ and then enters the final concentrator. The high-temperature concentrated alkali liquid is injected from the top of the final concentrator. As the final concentrator is in long-term production and operation, the high-temperature concentrated alkali liquid causes strong alkali scouring and corrosion to the base material at the bottom of the final concentrator. Leakage will occur in the seriously corroded and thinned parts of the final concentrator. If the leakage of high-temperature concentrated alkali liquid is not discovered in time, it will cause production accidents and burn the staff.
[0003] On the one hand, the cost for the company to purchase a final concentrator is about 650,000 yuan. The serious corrosion caused by the high-temperature concentrated alkali solution to the mother material of the final concentrator shortens the production service life of the final concentrator. The frequent replacement of the final concentrator increases the company's production cost and brings serious economic losses to the company.
[0004] On the other hand, when the end concentrator is shut down for regular inspection and maintenance, the concentrated alkali solution remaining at the bottom of the end concentrator will also pose a risk of burns to the maintenance personnel. Summary of the invention
[0005] The utility model provides a solid caustic soda system final concentrator transformation device, which overcomes the above-mentioned deficiencies of the prior art and can effectively solve the problems of short production service life of the final concentrator and high risk factor of shutdown for maintenance in the existing solid caustic soda production process system.
[0006] The technical scheme of the utility model is realized by the following measures: a solid alkali system final concentrator transformation device, including a pre-concentrator, a final concentrator, and a flash tank, a falling film device is arranged on the top of the final concentrator, a first concentrated alkali pipeline is fixedly connected to the liquid inlet on the top of the pre-concentrator, a second concentrated alkali pipeline is fixedly connected between the liquid outlet at the bottom of the pre-concentrator and the liquid inlet at the top of the falling film device, a liquid outlet at the bottom of the falling film device is fixedly connected to the liquid inlet at the top of the final concentrator, a molten salt liquid inlet pipeline is fixedly connected to the liquid inlet at the bottom of the falling film device, The upper liquid outlet of the falling film device is fixedly connected with the molten salt liquid outlet pipeline, a sacrificial plate is provided on the inner arc-shaped inner wall of the final concentrator at the vertical projection of the bottom liquid outlet of the falling film device, an anti-vortex drain pipe is provided on the right side of the sacrificial plate, and a baffle is provided on the right side of the anti-vortex drain pipe, a steam reflux pipeline is fixedly connected between the top air outlet of the final concentrator and the lower air inlet of the pre-concentrator, a third concentrated alkali pipeline is fixedly connected between the bottom liquid outlet of the final concentrator and the top liquid inlet of the flash tank, and a fourth concentrated alkali pipeline is fixedly connected to the bottom liquid outlet of the flash tank.
[0007] The following are further optimizations and / or improvements to the above utility model technical solution:
[0008] The above-mentioned falling film device includes two falling film sleeves arranged with a front-to-back interval, the falling film sleeve includes an inner tube and a jacket, a first connecting pipeline is fixedly connected between the top liquid inlets of the two inner tubes spaced front and back, a second concentrated alkali pipeline is fixedly connected between the bottom liquid outlet of the preconcentrator and the first connecting pipeline, the bottom liquid outlet of the inner tube is fixedly connected to the top liquid inlet of the final concentrator, a second connecting pipeline is fixedly connected between the lower liquid inlets of the jackets spaced front and back, a molten salt liquid inlet pipeline is fixedly connected to the second connecting pipeline, a third connecting pipeline is fixedly connected between the upper liquid outlets of the jackets spaced front and back, and a molten salt liquid outlet pipeline is fixedly connected to the third connecting pipeline.
[0009] The outer walls of the two falling film casings spaced front and back are both provided with heating surround pipes from bottom to top, a fourth connecting pipeline is fixedly connected between the bottom air inlets of the heating surround pipes spaced front and back, a steam input pipeline is fixedly connected to the fourth connecting pipeline, a fifth connecting pipeline is fixedly connected between the top air outlets of the heating surround pipes spaced front and back, a steam exhaust pipeline is fixedly connected to the fifth connecting pipeline.
[0010] A maintenance manhole is provided at the right end of the above-mentioned final concentrator.
[0011] The sacrificial plate is a superior arc-shaped plate fitted to the inner side of the final concentrator, and the liquid outlet at the bottom of the inner tube of the falling film sleeve is vertically projected within the range of the sacrificial plate.
[0012] The baffle is a semicircular vertical plate, and the height of the baffle is higher than the height of the anti-vortex drain pipe.
[0013] The anti-vortex flow drain pipe is a Y-shaped vertical pipe, and the bottom liquid outlet of the anti-vortex flow drain pipe is fixedly connected with the bottom liquid outlet of the final concentrator.
[0014] A molten salt circulation pump is fixedly installed on the molten salt inlet pipeline, a steam circulation pump is fixedly installed on the steam input pipeline, an alkali liquid circulation pump is fixedly installed on the second concentrated alkali pipeline, and a steam control valve is fixedly installed on the steam input pipeline between the steam input pipeline inlet and the steam circulation pump inlet.
[0015] A remote liquid level gauge is fixedly arranged on the final concentrator.
[0016] The above device also includes a controller, and the molten salt circulation pump, the steam circulation pump, the steam control valve, the remote liquid level meter, and the alkali solution circulation pump are all electrically connected to the controller.
[0017] The utility model has a reasonable and compact structure and is easy to use. By arranging a sacrificial plate and a baffle in the final concentrator, the service life of the final concentrator is extended, and the regular maintenance environment inside the final concentrator is safer. When the final concentrator is started for production, steam heating is started in advance to heat the falling film sleeve, which improves the product stability of the solid alkali production system and has the characteristics of safety, labor saving, simplicity and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Attached Figure 1 It is a semi-sectional schematic diagram of the process flow of the utility model.
[0019] Attached Figure 2 For attachment Figure 1 Schematic diagram of the process flow at CC of the middle falling film device.
[0020] Attached Figure 3 For attachment Figure 1 Schematic diagram of the cross-sectional structure at the concentrator AA in the figure.
[0021] Attached Figure 4 For attachment Figure 1 Schematic diagram of the cross-sectional structure at the concentrator BB in FIG.
[0022] The codes in the accompanying drawings are: 1 is a pre-concentrator, 2 is a final concentrator, 3 is a flash tank, 4 is a first concentrated alkali pipeline, 5 is a second concentrated alkali pipeline, 6 is a molten salt inlet pipeline, 7 is a molten salt outlet pipeline, 8 is a sacrificial plate, 9 is an anti-vortex drain pipe, 10 is a baffle, 11 is a maintenance manhole, 12 is a steam reflux pipeline, 13 is a third concentrated alkali pipeline, 14 is a fourth concentrated alkali pipeline, 15 is a falling film casing, 16 is a heat tracing surround pipe, 17 is a steam input pipeline, 18 is a steam discharge pipeline, 19 is a molten salt circulation pump, 20 is a steam circulation pump, 21 is a steam control valve, 22 is a remote liquid level gauge, 23 is an alkali liquid circulation pump, 24 is an inner pipe, 25 is a jacket, 26 is a first connecting pipeline, 27 is a second connecting pipeline, 28 is a third connecting pipeline, 29 is a fourth connecting pipeline, and 30 is a fifth connecting pipeline. DETAILED DESCRIPTION
[0023] The present invention is not limited by the following embodiments, and specific implementation methods can be determined according to the technical solution of the present invention and actual conditions.
[0024] In the present invention, unless otherwise specified, the equipment and devices used are all the equipment and devices known and used in the art.
[0025] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached manual. Figure 1 The layout is described in detail, such as the positional relationship of front, back, top, bottom, left, right, etc., which is based on the attached manual. Figure 1 It is determined by the layout direction.
[0026] The present invention is further described below in conjunction with the embodiments and drawings:
[0027] Embodiment 1: As attached Figure 1As shown, the solid alkali system final concentrator transformation device comprises a preconcentrator 1, a final concentrator 2, and a flash tank 3. A falling film device is arranged on the top of the final concentrator 2. The top liquid inlet of the preconcentrator 1 is fixedly connected with a first concentrated alkali pipeline 4. The bottom liquid outlet of the preconcentrator 1 and the top liquid inlet of the falling film device are fixedly connected with a second concentrated alkali pipeline 5. The bottom liquid outlet of the falling film device is fixedly connected with the top liquid inlet of the final concentrator 2. The lower liquid inlet of the falling film device is fixedly connected with a molten salt liquid inlet pipeline 6. The upper liquid outlet of the falling film device is fixedly connected with a molten salt liquid outlet. A liquid outlet pipeline 7, a sacrificial plate 8 is provided along the arc-shaped inner wall of the final concentrator 1 at a vertical projection of the bottom liquid outlet of the falling film device, an anti-vortex drainage pipe 9 is provided on the right side of the sacrificial plate 8, and a baffle 10 is provided on the right side of the anti-vortex drainage pipe 9, a steam reflux pipeline 12 is fixedly connected between the top air outlet of the final concentrator 2 and the lower air inlet of the pre-concentrator 1, a third concentrated alkali pipeline 13 is fixedly connected between the bottom liquid outlet of the final concentrator 2 and the top liquid inlet of the flash tank 3, and a fourth concentrated alkali pipeline 14 is fixedly connected to the bottom liquid outlet of the flash tank 3.
[0028] The above-mentioned solid caustic soda system final concentrator modification device can be further optimized and / or improved according to actual needs:
[0029] Embodiment 2: It is different from Embodiment 1 in that: Figure 1 , 2 As shown, the falling film device includes two falling film sleeves 15 arranged at a front-to-back interval, and the falling film sleeve 15 includes an inner tube 24 and a jacket 25. A first connecting pipeline 26 is fixedly connected between the top liquid inlets of the two inner tubes 24 spaced from front to back, a second concentrated alkali pipeline 5 is fixedly connected between the bottom liquid outlet of the preconcentrator 1 and the first connecting pipeline 26, the bottom liquid outlet of the inner tube 24 is fixedly connected to the top liquid inlet of the final concentrator 2, a second connecting pipeline 27 is fixedly connected between the lower liquid inlets of the jackets 25 spaced from front to back, a molten salt liquid inlet pipeline 6 is fixedly connected to the second connecting pipeline 27, a third connecting pipeline 28 is fixedly connected between the upper liquid outlets of the jackets 25 spaced from front to back, and a molten salt liquid outlet pipeline 7 is fixedly connected to the third connecting pipeline 28.
[0030] As required, one or more falling film devices may be arranged on the top of the final concentrator 2 .
[0031] Embodiment 3: It differs from Embodiment 1 to Embodiment 2 in that: Figure 1 , 2 As shown, the outer walls of the two falling film sleeves 15 spaced apart at front and rear are both provided with a heating surround pipe 16 from bottom to top, a fourth connecting pipeline 29 is fixedly connected between the bottom air inlets of the heating surround pipes 16 spaced apart at front and rear, a steam input pipeline 17 is fixedly connected to the fourth connecting pipeline 29, a fifth connecting pipeline 30 is fixedly connected between the top air outlets of the heating surround pipes 16 spaced apart at front and rear, and a steam exhaust pipeline 18 is fixedly connected to the fifth connecting pipeline 30.
[0032] According to needs, when the device is started or in cold areas in the north in winter, the ambient temperature in the jacket 25 is low, and the high-temperature molten salt enters the jacket 25 with heat loss. Therefore, the high-temperature medium in the jacket 25 cannot achieve heat exchange and concentration effect on the concentrated alkali solution in the inner tube 24, resulting in unqualified terminal products of the solid alkali system, which brings certain economic losses to the enterprise. The device is provided with a heating surround pipe 16, which uses steam circulation heating to evenly heat the outer wall of the falling film sleeve 15, which not only ensures the normal production operation of the final concentrator 2, but also reduces the economic losses of the enterprise.
[0033] Embodiment 4: It differs from Embodiments 1 to 3 in that: Figure 1 As shown, a maintenance manhole 11 is provided at the right end of the final concentrator 2.
[0034] Embodiment 5: It differs from Embodiments 1 to 4 in that: Figure 3 As shown, the sacrificial plate 8 is a major arc plate (a major arc is an arc larger than a semicircle) that fits the inner side of the final concentrator 2 , and the liquid outlet at the bottom of the inner tube of the falling film sleeve 15 is vertically projected within the range of the sacrificial plate 8 .
[0035] As needed, alkali solution with a concentration of 62.0% enters from the top of the inner tube 24, and molten salt with a temperature of 400°C enters from the lower liquid inlet of the jacket 25. The high-temperature molten salt flowing from bottom to top in the jacket 25 heats and concentrates the alkali solution flowing from top to bottom in the inner tube 24 at high temperature. The concentration of the alkali solution is concentrated from 62.0% to 98.3%. The 98.3% alkali solution enters the final concentrator 2 from the bottom liquid outlet of the inner tube 24. The alkali solution with a concentration of 98.3% is extremely corrosive to metal materials. The high-temperature concentrated alkali solution is injected from the top of the final concentrator 2, which causes extremely strong corrosion and thinning to the easily eroded parts of the bottom of the final concentrator 2. When the corrosion is serious, the final concentrator 2 needs to be replaced. A sacrificial plate 8 is arranged in the final concentrator 2. The high-temperature concentrated alkali solution can corrode the sacrificial plate 8 first. The staff regularly measures the thickness of the sacrificial plate 8. When it is found that the sacrificial plate 8 is severely corroded and thinned locally, the sacrificial plate 8 is repaired and replaced.
[0036] As needed, the sacrificial plate can be made of Ni6, which has strong corrosion resistance. The small-sized arc-shaped sacrificial plate 8 can be moved from the inspection manhole 11 of the final concentrator 2 into the final concentrator 2 and fully welded to form a sacrificial plate 8 of the required size.
[0037] Embodiment 6: It differs from Embodiments 1 to 5 in that: Figure 4 As shown, the baffle 10 is a semicircular vertical plate, and the height of the baffle 10 is higher than the height of the anti-vortex drain pipe 9.
[0038] As needed, when the device is shut down for maintenance, maintenance personnel enter the end concentrator 2 through the maintenance manhole 11 for maintenance. The baffle 10 can prevent the concentrated alkali solution remaining at the bottom of the end concentrator 2 from burning the maintenance personnel. The maintenance personnel can use a centrifugal pump to pump out the concentrated alkali solution remaining at the bottom of the end concentrator 2, and then carry out maintenance work inside the end concentrator 2.
[0039] Embodiment 7: It differs from Embodiments 1 to 6 in that: Figure 4 As shown, the anti-vortex drain pipe 9 is a Y-shaped vertical pipe, and the bottom liquid outlet of the anti-vortex drain pipe 9 is fixedly connected to the bottom liquid outlet of the final concentrator 2.
[0040] As needed, since the final concentrator 2 concentrates the concentration of the concentrated alkali solution from 62.0% to 98.3%, the 98.3% concentrated alkali solution enters the flash tank 3 from the bottom liquid outlet of the final concentrator 2 to continue flash evaporation, the 98.3% concentrated alkali solution will form a vortex-like downward liquid state at the bottom liquid outlet of the final concentrator 2. The high-concentration alkali solution is discharged in a vortex-like downward liquid manner, which will cause severe eddy current corrosion damage to the metal components at the bottom liquid outlet of the final concentrator 2. The anti-vortex drain pipe 9 is a Y-shaped vertical pipe, which can reduce the corrosion degree of the metal components at the bottom liquid outlet of the final concentrator 2 and improve the service life of the final concentrator 2.
[0041] Embodiment 8: It differs from Embodiments 1 to 7 in that: Figure 1 , 2 As shown, a molten salt circulation pump 19 is fixedly installed on the molten salt liquid inlet pipeline 6, a steam circulation pump 20 is fixedly installed on the steam input pipeline 17, a alkali liquid circulation pump 24 is fixedly installed on the second concentrated alkali pipeline 5, and a steam control valve 21 is fixedly installed on the steam input pipeline 17 between the inlet of the steam input pipeline 17 and the inlet of the steam circulation pump 20.
[0042] Embodiment 9: It differs from Embodiments 1 to 8 in that: Figure 1 As shown, a remote liquid level meter 22 is fixedly arranged on the final concentrator 2 .
[0043] Embodiment 10: It differs from Embodiments 1 to 9 in that: Figure 1 As shown, a controller is also included, and the molten salt circulation pump 19, the steam circulation pump 20, the steam control valve 21, the remote liquid level meter 22, and the alkali solution circulation pump 24 are all electrically connected to the controller.
[0044] According to the needs, the pipelines and equipment of the solid caustic soda system concentrator transformation device can also be equipped with conventional valves, thermometers and pressure gauges known in the art according to production needs. The controller is a DCS controller, and the model of the DCS controller can be the CS3000 controller produced by Yokogawa Corporation of Japan.
[0045] In summary, the inventive effect of the utility model extends the service life of the final concentrator and improves the efficiency of regular maintenance of the final concentrator. The cost of purchasing the final concentrator for the production enterprise is 650,000 yuan, and the cost of purchasing the sacrificial plate material is 56,260 yuan (the current price of nickel plate is 280,000 yuan / ton, and the transformation requires 0.2 tons). If the sacrificial plate is not set in the final concentrator, the final concentrator needs to be replaced every 6 years. The use of a new type of sacrificial plate in the final concentrator can save 98,123 yuan for the production enterprise each year, thereby eliminating the production cost for the enterprise.
[0046] The above technical features constitute the embodiments of the present utility model, which have strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.
[0047] The use process of the embodiment of the utility model is as follows: first, the alkali liquid at the lower part of the preconcentrator 1 enters the inner tube 24 through the second concentrated alkali pipeline 5 and the first connecting pipeline 26 in turn, the steam enters the heat tracing surround pipe 16 through the steam input pipeline 17 and the fourth connecting pipeline 29 in turn, and then is discharged into the downstream process system through the fifth connecting pipeline 30 and the steam discharge pipeline 18 in turn, and the high-temperature molten salt enters the jacket 25 through the molten salt liquid inlet pipeline 6 and the second connecting pipeline 27 in turn; at this time, the high-temperature steam in the heat tracing surround pipe 16 heats the molten salt in the jacket 25, and the heated high-temperature molten salt enters the downstream process system through the third connecting pipeline 28 and the molten salt liquid outlet pipeline 7 in turn; then Then, the high-temperature molten salt in the jacket 25 heats and concentrates the alkali solution in the inner tube 24, and the concentrated alkali solution in the inner tube 24 enters the final concentrator 2. High-temperature steam is formed on the upper part of the high-concentration alkali solution surface in the final concentrator 2. The high-temperature steam enters the preconcentrator 1 through the steam reflux pipeline 12, and the raw alkali solution enters the preconcentrator 1 through the first concentrated alkali pipeline 4. The high-temperature steam in the preconcentrator 1 pre-concentrates the raw alkali solution; finally, the high-concentration alkali solution in the final concentrator 2 enters the third concentrated alkali pipeline 13 through the anti-vortex drain pipe 9, and then enters the flash tank 3. The flash tank 3 further flashes and concentrates the high-concentration alkali solution, and the concentrated alkali solution after flash concentration enters the downstream process system through the fourth concentrated alkali pipeline 14.
[0048] When the final concentrator 2 is regularly inspected and maintained: first, all the alkali solution in the final concentrator 2 is discharged; then, the inspection manhole 11 is opened to continue to discharge the alkali solution remaining at the bottom of the final concentrator 2 out of the final concentrator 2; finally, the thickness of the sacrificial plate 8 is measured, and the sacrificial plate 8 in the severely thinned part is replaced and repaired.
Claims
1. A solid caustic soda system final concentrator transformation device, characterized in that It comprises a pre-concentrator, a final concentrator and a flash tank, a falling film device is arranged on the top of the final concentrator, a first concentrated alkali pipeline is fixedly connected to the liquid inlet at the top of the pre-concentrator, a second concentrated alkali pipeline is fixedly connected between the liquid outlet at the bottom of the pre-concentrator and the liquid inlet at the top of the falling film device, the liquid outlet at the bottom of the falling film device is fixedly connected to the liquid inlet at the top of the final concentrator, a molten salt liquid inlet pipeline is fixedly connected to the lower liquid inlet of the falling film device, a molten salt liquid outlet pipeline is fixedly connected to the upper liquid outlet of the falling film device, a sacrificial plate is arranged on the inner arc-shaped inner wall of the final concentrator which is a vertical projection of the bottom liquid outlet of the falling film device, an anti-vortex drain pipe is arranged on the right side of the sacrificial plate, a baffle is arranged on the right side of the anti-vortex drain pipe, a steam reflux pipeline is fixedly connected between the top air outlet of the final concentrator and the lower air inlet of the pre-concentrator, a third concentrated alkali pipeline is fixedly connected between the bottom liquid outlet of the final concentrator and the liquid inlet at the top of the flash tank, and a fourth concentrated alkali pipeline is fixedly connected to the bottom liquid outlet of the flash tank.
2. The solid caustic soda system final concentrator transformation device according to claim 1, characterized in that The falling film device includes two falling film sleeves arranged with a front-to-back interval, the falling film sleeve includes an inner tube and a jacket, a first connecting pipeline is fixedly connected between the top liquid inlets of the two inner tubes spaced front and back, a second concentrated alkali pipeline is fixedly connected between the bottom liquid outlet of the preconcentrator and the first connecting pipeline, the bottom liquid outlet of the inner tube is fixedly connected to the top liquid inlet of the final concentrator, a second connecting pipeline is fixedly connected between the lower liquid inlets of the jackets spaced front and back, a molten salt liquid inlet pipeline is fixedly connected to the second connecting pipeline, a third connecting pipeline is fixedly connected between the upper liquid outlets of the jackets spaced front and back, and a molten salt liquid outlet pipeline is fixedly connected to the third connecting pipeline.
3. The solid caustic soda system final concentrator transformation device according to claim 2 is characterized in that The outer walls of the two falling film casings spaced apart at front and rear intervals are both provided with heating surround pipes from bottom to top, a fourth connecting pipeline is fixedly connected between the bottom air inlets of the heating surround pipes spaced apart at the front and rear intervals, a steam input pipeline is fixedly connected to the fourth connecting pipeline, a fifth connecting pipeline is fixedly connected between the top air outlets of the heating surround pipes spaced apart at the front and rear intervals, and a steam exhaust pipeline is fixedly connected to the fifth connecting pipeline.
4. The solid caustic soda system final concentrator transformation device according to claim 1, 2 or 3, characterized in that There is an inspection manhole at the right end of the final concentrator.
5. The solid caustic soda system final concentrator transformation device according to claim 4, characterized in that The sacrificial plate is a superior arc-shaped plate fitted to the inner side of the final concentrator, and the liquid outlet at the bottom of the inner tube of the falling film sleeve is vertically projected within the range of the sacrificial plate.
6. The solid caustic soda system final concentrator transformation device according to claim 1, 2, 3 or 5, characterized in that The baffle is a semicircular vertical plate, and the height of the baffle is higher than the height of the anti-vortex drain pipe.
7. The solid caustic soda system final concentrator transformation device according to claim 6, characterized in that The anti-vortex flow drain pipe is a Y-shaped vertical pipe, and the bottom liquid outlet of the anti-vortex flow drain pipe is fixedly connected with the bottom liquid outlet of the final concentrator.
8. The solid caustic soda system final concentrator transformation device according to claim 3, characterized in that A molten salt circulation pump is fixedly installed on the molten salt inlet pipeline, a steam circulation pump is fixedly installed on the steam input pipeline, an alkali liquid circulation pump is fixedly installed on the second concentrated alkali pipeline, and a steam control valve is fixedly installed on the steam input pipeline between the steam input pipeline inlet and the steam circulation pump inlet.
9. The solid caustic soda system final concentrator transformation device according to claim 7 or 8, characterized in that A remote level gauge is fixedly installed on the final concentrator.
10. The solid caustic soda system final concentrator transformation device according to claim 9, characterized in that It also includes a controller, and the molten salt circulation pump, the steam circulation pump, the steam control valve, the remote liquid level meter, and the alkali solution circulation pump are all electrically connected to the controller.