Separation reaction kettle for rhenium-arsenic cooling liquid

Abstract

The invention discloses a rhenium-arsenic cooling liquid separation reaction kettle, and relates to the technical field of rhenium-arsenic cooling liquid separation, the rhenium-arsenic cooling liquid separation reaction kettle comprises a reaction cylinder, a sealing disc is detachably arranged at the upper end of the reaction cylinder, a separation cylinder is arranged in the reaction cylinder, a transmission shaft is axially and rotatably inserted into the sealing disc, and the bottom end of the transmission shaft extends into the reaction cylinder to provide power for lifting of the separation cylinder; the upper end of the separation barrel is of an opening structure and is clamped with a detachable filter screen, a liquid inlet is formed in the center of the bottom end of the separation barrel, a flow guide sleeve located at an opening in the upper end of the liquid inlet is fixed to the inner bottom wall of the separation barrel, a connecting rod with the outer diameter smaller than the inner diameter of the flow guide sleeve is inserted into the flow guide sleeve, and the upper end of the connecting rod is located in the separation barrel and is fixedly provided with a pressing disc. According to the invention, sodium thiosulfate and rhenium or arsenic in the cooling liquid are subjected to a chemical reaction to generate water-insoluble precipitates, a mode of multiple filtering operations in a small space is adopted, and high-pressure spraying is carried out while filtering is carried out, so that the precipitates are rapidly separated out, and the purpose of efficient separation is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of separation of rhenium-arsenic coolant, in particular to a separation reactor of rhenium-arsenic coolant. Background Art

[0002] Rhenium is a rare metal element with extremely high application value. It is widely used in aerospace, electronics, energy and other fields, such as manufacturing high-temperature alloys, superconducting materials and catalysts. Therefore, recovering rhenium from coolant can not only save resources, but also bring considerable economic benefits. Reduce resource waste: Although arsenic in coolant is not as rare as rhenium, it is also a valuable resource. Through separation, arsenic can be recycled and resources can be avoided.

[0003] The technical problems in separating coolants containing rhenium and arsenic are mainly reflected in the difficulty of separation caused by differences in the properties of the elements. The rhenium and arsenic contents in the coolant may vary greatly, and their existence forms in the coolant may also be different, which increases the difficulty of separation. When using chemical precipitation for separation, incomplete precipitation may be encountered. This may be caused by improper selection of precipitants, inaccurate control of precipitation conditions, etc. Incomplete precipitation will affect the separation effect, resulting in low purity of the final product. Summary of the invention

[0004] The object of the present invention is to provide a separation reactor for rhenium-arsenic coolant to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: a separation reactor for rhenium-arsenic coolant, comprising a reaction cylinder, wherein the space inside the reaction cylinder is filled with the rhenium-arsenic coolant to be treated; The upper end of the reaction cylinder is detachably provided with a sealing disk, a separation cylinder is provided inside the reaction cylinder, a transmission shaft is plugged into the sealing disk for axial rotation, and the bottom end of the transmission shaft extends into the reaction cylinder to provide power for the lifting of the separation cylinder; The upper end of the separation cylinder is an open structure, and a detachable filter screen is clamped thereon. A liquid inlet is opened at the center of the bottom end of the separation cylinder. A guide sleeve located at the upper end of the liquid inlet is fixed to the inner bottom wall of the separation cylinder. A connecting rod with an outer diameter smaller than the inner diameter of the guide sleeve is inserted into the guide sleeve. The upper end of the connecting rod is located in the separation cylinder and is fixed with a pressure plate. The lower end of the connecting rod is opened below the liquid inlet and is fixed with a counterweight plate. The separation cylinder descends, and the rhenium-arsenic coolant to be treated enters the guide sleeve, pushes up the pressure plate, and enters the separation cylinder. Sodium thiosulfate is added to the separation cylinder in advance, so that the sodium thiosulfate reacts chemically with the rhenium or arsenic in the coolant to generate water-insoluble precipitates. The filter screen is used to prevent the generated precipitates from overflowing the separation cylinder, and then they are retained in the separation cylinder for centralized collection and will not be mixed into the reaction cylinder.

[0006] The separation cylinder rises, and the counterweight plate pulls down the connecting rod to press the pressure plate down on the upper opening of the guide sleeve, so that the rhenium arsenic coolant to be treated in the separation cylinder is separated from the rhenium arsenic coolant to be treated in the reaction cylinder, and the separation cylinder is used as an independent small space for chemical reaction.

[0007] In a further embodiment, the radial side wall of the reaction cylinder is connected with a liquid inlet pipe and a liquid outlet pipe.

[0008] In a further embodiment, a power frame is fixedly provided at the upper end of the reaction cylinder, a motor is fixed at the top of the power frame, the output end of the motor is directed toward and fixedly connected to the upper end of the transmission shaft, a transmission cross bar is fixedly connected to the bottom end of the transmission shaft, longitudinal extension portions are provided at both ends of the transmission cross bar, and external threads are provided on the outer walls of the longitudinal extension portions, multiple threaded rods are vertically fixed to the upper end of the separation cylinder, the longitudinal extension portions rotate around the transmission shaft as the rotation center, and rotate through the radial side walls of the multiple threaded rods.

[0009] In a further embodiment, a support rod is transversely fixed to the inner wall of the reaction cylinder, and a guide sleeve is fixed at the end of the support rod to be slidably plugged with the threaded rod. In a further embodiment, the radius of the longitudinal extension portion is 1-10 times that of the threaded rod. According to the lifting height requirement of the threaded rod, a longitudinal extension portion with a small or large radius is selected as a power part for the threaded connection of the threaded rod. The purpose of this is to adjust the lifting range of the separation barrel.

[0010] In a further embodiment, the bottom end of the side wall of the reaction cylinder is connected to an external pipe port, and a sealing plate is installed at the end of the external pipe port. A tower-shaped bellows is embedded in the center of the sealing plate, and an adding tube is inserted in the center of the tower-shaped bellows, which can meet the needs of adding reactants and eliminate the need to frequently open the reaction cylinder, thereby improving processing efficiency.

[0011] In a further embodiment, a flushing pipe is connected to the radial side wall of the reaction cylinder, and a nozzle for spraying water toward the filter is connected to the end of the flushing pipe.

[0012] In a further embodiment, the pressure plate and the upper opening of the guide sleeve are arranged with equal diameters; An enlarged portion extends from the bottom end of the radial side wall of the pressure plate.

[0013] In a further embodiment, the top wall of the reaction cylinder is also connected to a T-tube, and a tempered glass window is embedded in the upper end of the T-tube.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The invention discloses a separation reactor for rhenium-arsenic coolant. The reactor provides a closed place for chemical reaction. Sodium thiosulfate is used to react chemically with rhenium or arsenic in the coolant to generate water-insoluble precipitates. A small space is used to perform multiple filtering operations. High-pressure spraying is performed while filtering to achieve simultaneous filtering and washing, so that the precipitates are quickly separated and the purpose of efficient separation is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a schematic diagram of the structure of the separation component of the present invention; Figure 3 For the present invention Figure 2 A magnified view of the structure at center; Figure 4 and Figure 5 A partial top view of the threaded connection between the longitudinal extensions with different radii and the threaded rod of the present invention; Figure 6 It is a partial half-section view of the guide sleeve of the pressure plate separated from the separation cylinder of the present invention; Figure 7 It is a partial half-section view of the guide sleeve of the pressure plate closed separation cylinder of the present invention.

[0016] In the figure: 1. reaction cylinder; 11. flushing pipe; 12. liquid inlet pipe; 13. liquid outlet pipe; 14. T-tube; 2. sealing plate; 21. tower-shaped bellows; 22. adding pipe; 3. transmission shaft; 31. transmission cross bar; 32. longitudinal extension; 4. separation cylinder; 41. filter screen; 42. guide sleeve; 43. threaded rod; 44. guide sleeve; 45. connecting rod; 46. counterweight plate; 47. pressure plate; 48. expansion part. DETAILED DESCRIPTION

[0017] The following will be described clearly and completely in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Embodiment, this embodiment provides a separation reactor of rhenium arsenic coolant, such as Figure 1 As shown, it includes a reaction cylinder 1, and a liquid inlet pipe 12 and a liquid outlet pipe 13 are connected to the radial side wall of the reaction cylinder 1. The liquid inlet pipe 12 is used to introduce the rhenium arsenic coolant to be treated. The space inside the reaction cylinder 1 is filled with the rhenium arsenic coolant to be treated, and the treated rhenium arsenic coolant is discharged from the liquid outlet pipe 13.

[0019] The upper end of the reaction cylinder 1 is detachably provided with a sealing disk 2, and a separation cylinder 4 is provided inside the reaction cylinder 1. The sealing disk 2 is axially rotatably plugged with a transmission shaft 3, and the bottom end of the transmission shaft 3 extends into the reaction cylinder 1 to provide power for the lifting of the separation cylinder 4; specifically, Figure 1 , Figure 2 as well as Figure 3 As shown, a power frame is fixedly arranged at the upper end of the reaction cylinder 1, and a motor is fixedly arranged at the top of the power frame. The output end of the motor faces and is fixedly connected to the upper end of the transmission shaft 3. A transmission crossbar 31 is fixedly connected to the bottom end of the transmission shaft 3. Both ends of the transmission crossbar 31 are provided with longitudinal extensions 32. The outer wall of the longitudinal extension 32 is provided with external threads. A plurality of threaded rods 43 are vertically fixed to the upper end of the separation cylinder 4. The motor is a reduction motor, which provides positive and negative rotation power for the transmission shaft 3. The transmission crossbar 31 rotates synchronously with the transmission shaft 3. The longitudinal extension 32 rotates with the transmission shaft 3 as the rotation center, and rotates through the radial side walls of the plurality of threaded rods 43. The external threads of the longitudinal extension 32 are in thread contact with the threaded rod 43. At the same time, a support rod is transversely fixed to the inner wall of the reaction cylinder 1. A guide sleeve 42 is fixed at the end of the support rod to be slidably plugged with the threaded rod 43. Such a configuration enables the threaded rod 43 to slide up and down only along the axial direction of the guide sleeve 42. When the external threads of the longitudinal extension 32 are in thread contact with the threaded rod 43, the threaded rod 43 can only be adjusted up and down, that is, the lifting and lowering operation of the separation cylinder 4 is adjusted.

[0020] It needs to be explained that Figure 4 and Figure 5 As shown, the radius of the longitudinal extension part 32 is 1-10 times of the threaded rod 43. That is to say, according to the lifting height requirement of the threaded rod 43, a longitudinal extension part 32 with a small or large radius is selected as a power piece for threaded connection of the threaded rod 43. If a longitudinal extension part 32 with a large radius is selected, the rotation contact surface between the outer wall of the longitudinal extension part 32 and the threaded rod 43 increases, and the longitudinal extension part 32 rotates through the threaded rod 43 for a longer time, and the lifting height of the threaded rod 43 will increase, that is, the lifting height amplitude of the separation barrel 4 increases.

[0021] If the radius of the longitudinal extension 32 is small, the rotation contact surface between the outer wall of the longitudinal extension 32 and the threaded rod 43 becomes smaller, and the time for the longitudinal extension 32 to rotate through the threaded rod 43 is shortened, and the lifting height of the threaded rod 43 will become smaller, that is, the lifting height amplitude of the separation cylinder 4 is reduced. The purpose is to allow the separation cylinder 4 to be lifted up and down, so that the rhenium arsenic coolant in the reaction cylinder 1 can be continuously introduced into the separation cylinder 4 in batches for filtering operations. Whether the lifting amplitude is large or small, it is determined by the amount of rhenium arsenic coolant to be treated filled in the reaction cylinder 1, so as to ensure that the separation cylinder 4 is fully adjusted up and down in the filling reaction cylinder 1, and multiple batches of rhenium arsenic coolant are filled for chemical reaction, thereby speeding up the processing progress.

[0022] The specific filtering operation is as follows: first, the upper end of the separation cylinder 4 is set to an open structure, and a detachable filter screen 41 is engaged. Here, the filter screen 41 can be snap-fitted with the inner wall of the opening structure, or the filter screen 41 can be tightly plugged into the inner wall of the opening structure. The purpose is to prevent the filter screen 41 from detaching at will without external force. A liquid inlet is provided at the center of the bottom end of the separation cylinder 4. A guide sleeve 44 is fixed to the bottom wall of the separation cylinder 4, and a connecting rod 45 with an outer diameter smaller than the inner diameter of the guide sleeve 44 is inserted in the guide sleeve 44. The upper end of the connecting rod 45 is located in the separation cylinder 4 and is fixed with a pressure plate 47. The lower end of the connecting rod 45 is opened below the liquid inlet and is fixed with a counterweight plate 46. Under normal conditions, the counterweight plate 46 is used to counterweight the connecting rod 45, and the pressure plate 47 is pressed down to close the upper opening of the guide sleeve 44. In this way, the separation cylinder 4 and the reaction cylinder 1 can form two relatively dynamic spaces, so that the rhenium arsenic coolant entering the separation cylinder 4 can be filtered in a small space to improve the processing efficiency. At the same time, the pressure plate 47 and the upper opening of the guide sleeve 44 are set with equal diameters to ensure that the pressure plate 47 can completely cover the upper opening of the guide sleeve 44 to achieve closed processing.

[0023] When the separation cylinder 4 descends, Figure 6 As shown, the rhenium-arsenic coolant to be treated enters the guide sleeve 44, pushes up the pressure plate 47, and enters the separation barrel 4. An external pipe port is connected to the bottom end of the side wall of the reaction barrel 1, and a sealing plate 2 is installed at the end of the external pipe port. A tower-shaped bellows 21 is embedded in the center of the sealing plate 2, and an addition tube 22 is inserted in the center of the tower-shaped bellows 21. When sodium thiosulfate is not added to the addition tube 22, a plugging head is used to seal its pipe mouth. Sodium thiosulfate is added to the separation barrel 4 in advance through the addition tube 22, so that the sodium thiosulfate reacts chemically with the rhenium or arsenic in the coolant to generate a water-insoluble precipitate. This can meet the need for adding reactants and at the same time, there is no need to frequently open the reaction barrel 1, thereby improving the treatment efficiency. Figure 1 As shown, the top wall of the reaction tube 1 is also connected to a T-shaped tube 14, and a tempered glass window is embedded in the upper end of the T-shaped tube 14. During the chemical reaction process, the state inside the reaction tube 1 and the separation tube 4 can be seen through the tempered glass window.

[0024] At the same time, during the descent of the separation cylinder 4, the filter screen 41 is used to prevent the generated sediment from overflowing the separation cylinder 4, and then it is retained in the separation cylinder 4 for centralized collection, and will not be mixed into the reaction cylinder 1. At this time, the space inside the separation cylinder 4 is also used as a sediment storage space. When the treatment is completed, the filter screen 41 is disassembled from the opening structure, and the sediment can be fished out for treatment.

[0025] like Figure 7As shown, the counterweight plate 46 pulls down the connecting rod 45 to press the pressure plate 47 down to the upper opening of the guide sleeve 44. At the same time, an expansion portion 48 extends from the bottom end of the radial side wall of the pressure plate 47. When the separation cylinder 4 rises, the rhenium arsenic coolant in the separation cylinder 4 is pressed down on the expansion portion 48, and the pressure plate 47 can be pressed tightly down to the upper opening of the guide sleeve 44. In this way, the rhenium arsenic coolant to be treated entering the separation cylinder 4 is separated from the rhenium arsenic coolant to be treated in the reaction cylinder 1, and the separation cylinder 4 is used as an independent small space for chemical reaction.

[0026] In addition, in the process of chemical reaction, in order to improve the reaction efficiency. Figure 1 As shown, a flushing pipe 11 is connected to the radial side wall of the reaction cylinder 1, and a nozzle is connected to the end of the flushing pipe 11 to spray water at the filter screen 41. The separation cylinder 4 is raised for processing, and the separation cylinder 4 is separated from the liquid surface of the rhenium arsenic coolant. The flushing pipe 11 is connected to a flushing liquid with high pressure, and the flushing liquid is sprayed on the filter screen 41 through the nozzle. The rhenium arsenic coolant in the separation cylinder 4 and the precipitate generated by the chemical reaction can be flushed with high pressure through the filter screen 41, thereby accelerating the rapid separation speed of the precipitate, achieving simultaneous filtration and washing, and improving the separation efficiency.

[0027] In summary, the reactor provides a closed place for chemical reactions, uses sodium thiosulfate to react chemically with rhenium or arsenic in the coolant to generate a water-insoluble precipitate, and adopts a small space to perform multiple filtering operations. In addition, high-pressure spraying is performed while filtering to achieve simultaneous filtration and washing, and quickly separate the precipitate to achieve the purpose of efficient separation.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A separation reactor for rhenium-arsenic coolant, characterized in that: include: A reaction cylinder (1), wherein the inner space of the reaction cylinder (1) is filled with a rhenium-arsenic coolant to be treated; The upper end of the reaction cylinder (1) is detachably provided with a sealing disk (2), a separation cylinder (4) is provided inside the reaction cylinder (1), a transmission shaft (3) is axially rotatably plugged into the sealing disk (2), and the bottom end of the transmission shaft (3) extends into the reaction cylinder (1) to provide power for the separation cylinder (4) to be lifted and lowered; The upper end of the separation cylinder (4) is an open structure and is engaged with a detachable filter screen (41); a liquid inlet is provided at the center of the bottom end of the separation cylinder (4); a flow guide sleeve (44) located at the upper end of the liquid inlet is fixed to the inner bottom wall of the separation cylinder (4); a connecting rod (45) having an outer diameter smaller than an inner diameter of the flow guide sleeve (44) is inserted into the flow guide sleeve (44); the upper end of the connecting rod (45) is located in the separation cylinder (4) and is fixed with a pressure plate (47); the lower end of the connecting rod (45) is opened below the liquid inlet and is fixed with a counterweight plate (46); The separation cylinder (4) descends, and the rhenium-arsenic coolant to be treated enters the guide sleeve (44), pushes up the pressure plate (47), and enters the separation cylinder (4); The separation cylinder (4) rises, and the counterweight plate (46) pulls down the connecting rod (45) to press the pressure plate (47) down onto the upper opening of the guide sleeve (44), so that the rhenium arsenic coolant to be treated that enters the separation cylinder (4) is separated from the rhenium arsenic coolant to be treated in the reaction cylinder (1).

2. The separation reactor of rhenium-arsenic coolant according to claim 1, characterized in that: The radial side wall of the reaction cylinder (1) is connected to a liquid inlet pipe (12) and a liquid outlet pipe (13).

3. The separation reactor of rhenium-arsenic coolant according to claim 1, characterized in that: A power frame is fixedly provided at the upper end of the reaction cylinder (1), a motor is fixedly provided at the top of the power frame, an output end of the motor faces and is fixedly connected to the upper end of the transmission shaft (3), a transmission cross bar (31) is fixedly connected to the lower end of the transmission shaft (3), longitudinal extension portions (32) are provided at both ends of the transmission cross bar (31), an outer wall of the longitudinal extension portion (32) is provided with an external thread, a plurality of threaded rods (43) are vertically fixedly provided at the upper end of the separation cylinder (4), the longitudinal extension portion (32) rotates with the transmission shaft (3) as a rotation center, and rotates through radial side walls of the plurality of threaded rods (43).

4. The separation reactor of rhenium-arsenic coolant according to claim 3, characterized in that: A support rod is transversely fixed to the inner wall of the reaction cylinder (1), and a guide sleeve (42) is fixed at the end of the support rod and is slidably plugged into the threaded rod (43).

5. The separation reactor of rhenium-arsenic coolant according to claim 3, characterized in that: The radius of the longitudinal extension portion (32) is 1-10 times that of the threaded rod (43).

6. The separation reactor of rhenium-arsenic coolant according to claim 1, characterized in that: The bottom end of the side wall of the reaction cylinder (1) is connected to an external pipe port, and a sealing plate (2) is installed at the end of the external pipe port. A tower-shaped bellows (21) is embedded in the center of the sealing plate (2), and an addition pipe (22) is inserted in the center of the tower-shaped bellows (21).

7. The separation reactor of rhenium-arsenic coolant according to claim 1, characterized in that: The radial side wall of the reaction cylinder (1) is connected to a flushing pipe (11), and the end of the flushing pipe (11) is connected to a nozzle that sprays water toward the filter screen (41).

8. The separation reactor of rhenium-arsenic coolant according to claim 1, characterized in that: The pressure plate (47) and the upper opening of the guide sleeve (44) are arranged with equal diameters; An enlarged portion (48) extends from the bottom end of the radial side wall of the pressure plate (47).

9. The separation reactor of rhenium-arsenic coolant according to claim 1, characterized in that: The top wall of the reaction cylinder (1) is also connected to a T-shaped tube (14), and a tempered glass window is embedded in the upper end of the T-shaped tube (14).

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