A sodium formate evaporation device

Abstract

This invention provides a sodium formate evaporation device, relating to the field of chemical equipment technology. The sodium formate evaporation device includes a reboiling chamber with a heating tube inside; and an evaporation chamber with a pressure-regulating valve. A partition is installed inside the evaporation chamber, and a third one-way valve is installed on the partition. The pressure-regulating valve controls the air pressure above the partition to be greater than the air pressure below the partition, thereby opening the third one-way valve and allowing the solution to circulate between the evaporation chamber and the reboiling chamber. The beneficial effects of this invention are: the pressure-regulating valve controls the pressure inside the upper chamber, ensuring that the pressure inside the upper chamber is always greater than the pressure in the lower chamber; the third one-way valve allows the evaporated sodium formate solution to be reintroduced into the reboiling chamber for secondary evaporation; and the first and second one-way valves allow the sodium formate solution to circulate between the evaporation chamber and the reboiling chamber for multiple evaporations. Utilizing the pressure principle for evaporation improves working efficiency.

Description

Technical Field

[0001] This invention relates to the field of chemical equipment technology, specifically a sodium formate evaporation device. Background Technology

[0002] Sodium formate is the simplest organic carboxylic acid salt. It is a white crystal or powder with a slight formic acid odor. Sodium formate is mainly used in the production of sodium hydrosulfite, oxalic acid, and formic acid.

[0003] In existing technologies, the evaporation of sodium formate generally employs a countercurrent feeding method, using an externally heated, natural circulation evaporator. The principle is that because the solution in the circulation tube is not heated by steam, its density is greater than that of the solution in the heating tube. This creates a circulating motion where the solution descends along the circulation tube and rises along the heating tube, with a circulation speed reaching 1.5 m / s. This forms the evaporator's own circulation.

[0004] However, this processing method is inefficient and takes a long time; crystals easily form inside the heating tube, which can easily clog the pipes and reduce the circulation speed over time. Generally, manual cleaning of the crystals inside the pipes is required, which is time-consuming and inefficient. Summary of the Invention

[0005] The purpose of this invention is to provide a sodium formate evaporation device, which aims to solve the problems of low evaporator efficiency and the need for manual cleaning of crystals inside the heating tube in the prior art, which is time-consuming.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A sodium formate evaporation apparatus includes a reboiling chamber, inside which a heating tube is installed; an evaporation chamber, on which a pressure regulating valve is installed, and inside which a partition is installed, with a third one-way valve on the partition. The pressure regulating valve controls the air pressure above the partition to be greater than the air pressure below the partition, thereby opening the third one-way valve and allowing the solution to circulate between the evaporation chamber and the reboiling chamber; a cleaning device, located inside the heating tube, capable of cleaning crystals inside the heating tube; and a driving device, capable of moving the cleaning device inside the heating tube.

[0007] A further technical solution of the present invention is that the evaporation chamber and the reboiler chamber are connected by a pipeline, and a first one-way valve and a second one-way valve are respectively installed inside the pipeline.

[0008] A further technical solution of the present invention is that an air inlet pipe and a feed pipe are provided on the reboiler.

[0009] A further technical solution of the present invention is that the evaporation chamber is provided with an upper chamber and a lower chamber.

[0010] A further technical solution of the present invention is that a discharge pipe is provided on the lower chamber.

[0011] A further technical solution of the present invention is that the cleaning device includes a scraper disposed inside the heating tube, a lifting plate fixedly connected below the scraper, and an elastic element disposed on the lifting plate.

[0012] A further technical solution of the present invention is that the driving device includes a fixed plate disposed inside the reboiling chamber, and a piston corresponding to the heating tube is slidably connected to the fixed plate.

[0013] A further technical solution of the present invention is that the piston is fixedly connected to the fixed plate.

[0014] A further technical solution of the present invention is that fine holes are provided on the scraper and the lifting plate.

[0015] A further technical solution of the present invention is that a waste discharge pipe is provided on the evaporation chamber.

[0016] The beneficial effects of this invention are:

[0017] 1. This sodium formate evaporation device controls the pressure inside the upper chamber through a pressure-stabilizing valve, ensuring that the pressure inside the upper chamber is always greater than the pressure in the lower chamber. A third one-way valve allows the evaporated sodium formate solution to be reintroduced into the reboiling chamber for secondary evaporation. A first one-way valve and a second one-way valve allow the sodium formate solution to circulate between the evaporation chamber and the reboiling chamber for multiple evaporations. By utilizing the pressure principle to evaporate the solution, the circulation speed is accelerated, and the working efficiency is improved.

[0018] 2. This sodium formate evaporation device introduces water into the reboiler through a feed pipe. The water pressure drives the drive device to move, which in turn drives the cleaning device to move. The cleaning device cleans the crystals inside the heating tube, eliminating the need for manual cleaning, reducing processing time, and increasing the practicality of the device. Attached Figure Description

[0019] Figure 1 This is a perspective view of a specific embodiment of the present invention.

[0020] Figure 2 This is a cross-sectional view of a specific embodiment of the present invention.

[0021] Figure 3 This is a cross-sectional view of a specific embodiment of the present invention.

[0022] Figure 4 yes Figure 3 A magnified structural diagram of A in the middle.

[0023] Figure 5 This is a cross-sectional structural diagram of a specific embodiment of the present invention.

[0024] In the diagram: 10. Evaporation chamber; 10a. Waste discharge pipe; 11. Reboiler chamber; 12. Baffle plate; 121. Upper chamber; 122. Lower chamber; 123. Third check valve; 124. Discharge pipe; 13. Pressure regulating valve; 14. First check valve; 141. Second check valve; 15. Heating tube; 16. Inlet pipe; 17. Feed pipe; 20. Cleaning device; 21. Scraper; 22. Lifting plate; 23. Elastic element; 24. Fine hole; 30. Drive device; 31. Fixed plate; 32. Piston. Detailed Implementation

[0025] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0026] Existing evaporators have low operating efficiency, which can easily affect the work progress. Furthermore, crystals easily form inside the heating tubes, which can lead to blockages over time, reducing circulation speed. Manual cleaning of these crystals is typically required, but this process is time-consuming and inefficient.

[0027] like Figure 1-5 As shown, a sodium formate evaporation device includes an evaporation chamber 10 and a reboiling chamber 11. A partition 12 is installed inside the evaporation chamber 10, dividing it into an upper chamber 121 and a lower chamber 122. A pressure regulating valve 13 is installed on the evaporation chamber 10, controlling the pressure in the upper chamber 121 to ensure it is always greater than the pressure in the lower chamber 122. The evaporation chamber 10 and the reboiling chamber 11 are connected by a pipe. A first one-way valve 14 and a second one-way valve 141 are installed inside the pipe. The first one-way valve 141 allows sodium formate solution and water vapor to flow from the reboiling chamber 11 into the evaporation chamber 11. In the evaporation chamber 10, the second one-way valve 141 allows the sodium formate solution to flow from the evaporation chamber 10 into the reboiling chamber 11. The reboiling chamber 11 is equipped with a heating tube 15, an air inlet pipe 16, and a feed pipe 17. The air inlet pipe 16 can be used to introduce high-temperature steam, which can heat the heating tube 15. The feed pipe 17 can introduce the solution into the reboiling chamber 11. The reboiling chamber 11 is equipped with a cleaning device 20, which can clean the crystals inside the heating tube 15. The reboiling chamber 11 is also equipped with a driving device 30, which can drive the cleaning device 20 to move up and down reciprocally inside the heating tube 15.

[0028] like Figure 1As shown in Figure 3, specifically, a third one-way valve 123 is provided on the partition 12. The third one-way valve 123 allows the liquid in the upper chamber 121 to flow into the lower chamber 122. A waste discharge pipe 10a is provided on the evaporation chamber 10. In use: sodium formate solution is added to the reboiling chamber 11 through the feed pipe 17. High-temperature steam is introduced into the reboiling chamber 11 through the air inlet pipe 16 to heat the heating tube 15. The heated water vapor and sodium formate solution enter the interior of the evaporation chamber 10 through the first one-way valve 14. The water vapor floats above the upper chamber 121. As water vapor continuously enters the upper chamber 121, the pressure in the upper chamber 121 continuously increases until it reaches a certain level. When there is too much water vapor in the lower chamber 122, causing excessive pressure in the upper chamber 121, the pressure regulating valve 13 opens to discharge the water vapor from the evaporation chamber 10, preventing excessive water vapor from entering the lower chamber 122. At this time, the third one-way valve 123 opens to bring the evaporated sodium formate solution into the lower chamber 122. The second one-way valve 141 allows the sodium formate solution to re-enter the reboiling chamber 11 for re-evaporation and purification. This allows the sodium formate solution to circulate and evaporate between the evaporation chamber 10 and the reboiling chamber 11. The lower chamber 122 is equipped with a discharge pipe 124, which can carry out the evaporated sodium formate solution.

[0029] like Figure 1 As shown in Figure 5, the cleaning device 20 further includes a scraper 21 disposed inside the heating tube 15. A lifting plate 22 is fixedly connected below the scraper 21. The lifting plate 22 can drive the scraper 21 to move up and down reciprocally inside the heating tube 15. An elastic element 23 is provided on the lifting plate 22. The elastic element 23 is a spring. The elastic element 23 can reset the lifting plate 22. Fine holes 24 are provided on the scraper 21 and the lifting plate 22 to allow the solution to enter the interior of the heating tube 15.

[0030] In use: the drive device 30 drives the lifting plate 22 to rise, the lifting plate 22 drives the scraper 21 to rise inside the heating tube 15, and the elastic element 23 resets the lifting plate 22, so that the lifting plate 22 can drive the scraper 21 to move up and down inside the heating tube 15, thereby scraping away the crystals inside the heating tube 15 by the scraper 21.

[0031] like Figure 1As shown in Figure 3, specifically, the drive device 30 includes a fixed plate 31 disposed inside the reboiling chamber 11. A piston 32 corresponding to the heating tube 15 is slidably connected to the fixed plate 31, and the piston 32 is fixedly connected to the lifting plate 22. In use: the sodium formate solution is introduced into the reboiling chamber 11 through the feed pipe 17. As the sodium formate solution is continuously added, the water pressure below the fixed plate 31 continuously increases, thereby opening the piston 32. The sodium formate solution can enter the heating tube 15 through the fine holes 24 on the scraper 21 and the lifting plate 22. The heating tube 15 is heated by high-temperature steam, thereby evaporating the sodium formate solution. When it is necessary to clean the crystals inside the heating tube 15, close the pressure regulating valve 13, open the waste discharge pipe 10a, and continuously and slowly introduce water into the reboiler 11 through the feed pipe 124. When the water pressure below the fixed plate 31 is high enough, the piston 32 opens. Water enters the heating tube 15 through the fine holes 24 on the scraper 21 and the lifting plate 22. Under the action of the elastic element 23, the piston 32 moves up and down in the fixed plate 31, so that the piston 32 can drive the scraper 21 to move up and down inside the heating tube 15 to clean the crystals inside the heating tube 15. The cleaned wastewater is discharged from the evaporation chamber 10 through the waste discharge pipe 10a.

[0032] like Figure 1 As shown in Figure 4, specifically, during the evaporation of the sodium formate solution, the sodium formate solution is introduced into the reboiling chamber 11 through the feed pipe 17. As the solution is continuously added, the water pressure below the fixed plate 31 continuously increases, the piston 32 opens, and the sodium formate solution enters the heating tube 15 through the fine holes 24 on the scraper 21 and the lifting plate 22. The heating tube 15 is heated by high-temperature steam, and the density of the heated sodium formate solution increases. Water vapor follows the sodium formate solution into the evaporation chamber 10 through the first one-way valve 14. As water vapor continuously flows in, the pressure above the upper chamber 121 continuously increases, thereby causing the third one-way valve 123 to open, bringing the evaporated sodium formate solution into the lower chamber 122. The sodium formate solution that has been evaporated once is reintroduced into the reboiling chamber 11 through the second one-way valve 141 for secondary evaporation. The sodium formate solution can be removed from the evaporation chamber 10 by opening the discharge pipe 124.

[0033] When it is necessary to clean the crystals inside the heating tube 15, open the waste discharge pipe 10a, close the pressure regulating valve 13, and introduce water into the reboiler 11 through the feed pipe 17. As the water pressure below the fixed plate 31 increases, it can push the piston 32 out of the fixed plate 31. The piston 32 drives the lifting plate 22 to rise, and the lifting plate 22 drives the scraper 21 to rise. The scraper 21 scrapes away the crystals inside the heating tube 15. At this time, water enters the heating tube 15 through the fine holes 24 on the scraper 21 and the lifting plate 22, submerging the heating tube 15. The wastewater will pass through the first single... When water enters the evaporation chamber 10 through valve 14, the pressure regulating valve 13 is closed, and the waste discharge pipe 10a is opened, allowing wastewater to flow out through the waste discharge pipe 10a. At this time, water addition is stopped, and the feed pipe 17 is opened. Under the action of the elastic element 23, the lifting plate 22 moves downward, and the lifting plate 22 drives the scraper 21 to move downward. The scraper 21 scrapes away the crystals in the heating tube 15. The lifting plate 22 drives the piston 32 to move downward, and the piston 32 re-enters the fixed plate 31. Some wastewater will flow out through the feed pipe 17. Repeating this operation can remove the crystals inside the heating tube 15.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sodium formate evaporation apparatus, characterized in that: include The reboiler (11) is equipped with a heating tube (15) and an air inlet pipe (16) and a feed pipe (17). An evaporation chamber (10) is provided with a pressure regulating valve (13). Inside the evaporation chamber (10), there is a partition (12) that divides the evaporation chamber (10) into an upper chamber (121) and a lower chamber (122). A third check valve (123) is provided on the partition (12). The pressure regulating valve (13) can control the air pressure above the partition (12) to be greater than the air pressure below the partition (12), thereby opening the third check valve (123) so that the solution can circulate between the evaporation chamber (10) and the reboiling chamber (11). The evaporation chamber (10) and the reboiling chamber (11) are connected by a pipe. Inside the pipe, there are a first check valve (14) and a second check valve (141). The cleaning device (20) is installed inside the heating tube (15) and can clean the crystals inside the heating tube (15); The drive unit (30) can drive the cleaning unit (20) to move inside the heating tube (15).

2. The sodium formate evaporation apparatus according to claim 1, characterized in that: The lower chamber (122) is provided with a discharge pipe (124).

3. The sodium formate evaporation apparatus according to claim 1, characterized in that: The cleaning device (20) includes a scraper (21) disposed inside the heating tube (15), and a lifting plate (22) is fixedly connected below the scraper (21). An elastic element (23) is disposed on the lifting plate (22).

4. The sodium formate evaporation apparatus according to claim 3, characterized in that: The drive device (30) includes a fixed plate (31) disposed inside the reboiler (11), and a piston (32) corresponding to the heating tube (15) is slidably connected on the fixed plate (31).

5. The sodium formate evaporation apparatus according to claim 4, characterized in that: The piston (32) is fixedly connected to the fixing plate (31).

6. The sodium formate evaporation apparatus according to claim 3, characterized in that: The scraper (21) and the lifting plate (22) are provided with fine holes (24).

7. A sodium formate evaporation apparatus according to any one of claims 1-6, characterized in that: The evaporation chamber (10) is equipped with a waste discharge pipe (10a).

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