Vacuum spray flash evaporation device for high salt water and superheated steam

Abstract

The invention provides a high salt water and superheated steam vacuum spraying flash evaporation device, which belongs to the technical field of high salt water treatment, and comprises a flash evaporation box body, a salt water spraying assembly, a steam spraying pipe, a net-shaped baffle assembly, a first driving assembly and a second driving assembly, the salt water spraying assembly extends into the flash evaporation box body from the top of the flash evaporation box body and is used for spraying high-salt water into the flash evaporation box body in a conical state, and the steam spraying pipe extends into the flash evaporation box body from the bottom of the flash evaporation box body and is used for spraying high-temperature steam into the flash evaporation box body in a conical state. The net-shaped blocking assembly is arranged in the flash evaporation box body and used for blocking salt-containing crystal particles floating upwards along with steam. Compared with the prior art, the embodiment of the invention has the advantages that a small amount of fine salt-containing crystal particles can be effectively prevented from being brought out of the flash tank body by high-temperature steam, the loss phenomenon of the salt-containing crystal particles is avoided, and the collection efficiency of the salt-containing crystals is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of high-salt water treatment, in particular to a high-salt water and superheated steam vacuum spray flash evaporation device. Background Art

[0002] Wastewater with a total dissolved solids (TDS) mass fraction greater than or equal to 1% is called "high-salt wastewater", which usually comes from industrial wastewater in the fields of petroleum processing, coal chemical industry, printing and dyeing, and papermaking, as well as concentrated liquid treated by membrane or electrodialysis equipment. High-salt wastewater has a complex composition and contains a large amount of chloride ions, sodium ions, sulfate ions, and difficult-to-degrade organic pollutants represented by benzene, phenol, and polycyclic aromatic hydrocarbons.

[0003] At present, spraying in the flash tank is an effective means to quickly evaporate the water in the high-salt water and quickly precipitate the salt particles. In the flash tank, the high-salt water is dispersed into small particles by spraying it and contacting it with the high-temperature steam flowing through the flash tank, so that the water in the high-salt water evaporates quickly, thereby precipitating the salt particles. However, the precipitated salt particles are large and small, and some small salt particles will be discharged to the outside of the flash tank along with the high-temperature steam, causing the loss of salt particles, thereby affecting the collection effect of the salt particles. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the embodiments of the present invention is to provide a high-salt water and superheated steam vacuum spray flash evaporation device.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: A high-salt water and superheated steam vacuum spray flash device, comprising a flash box, a salt water spray assembly, a steam spray pipe, a mesh baffle assembly, a first drive assembly and a second drive assembly. The salt water spray assembly extends from the top of the flash tank to the inside of the flash tank, and is used to spray high salt water into the inside of the flash tank in a conical state. The steam spray pipe extends from the bottom of the flash tank to the inside of the flash tank, and is used to spray high-temperature steam into the inside of the flash tank in a conical state. The mesh baffle assembly is arranged inside the flash tank and is used to baffle the salt-containing crystal particles floating up with the steam. The first drive assembly and the second drive assembly are installed on the inner wall of the flash tank, and the second drive assembly is used to drive the salt water spray pipe to rotate. The first driving assembly is used to drive the mesh baffle assembly to move up and down, so that the high-temperature steam sprayed from the steam spray pipe can act on different areas of the mesh baffle assembly.

[0006] As a further improvement of the present invention: the salt water spray assembly comprises a first salt water spray pipe, a second salt water spray pipe and a salt water spray head, One end of the first salt water nozzle is connected to an external pump group, and the other end extends from the top of the flash tank to the inside of the flash tank and is fixedly connected to the flash tank. The second salt water nozzle is arranged inside the flash tank, and the upper end of the second salt water nozzle is connected to the first salt water nozzle through a rotary joint, and the lower end is connected to the salt water nozzle. One end of the steam spray pipe is connected to an external steam generator, and the other end extends from the bottom of the flash tank to the inside of the flash tank and is connected to a steam spray head.

[0007] As a further improvement of the present invention: the second driving assembly includes a motor, a rotating shaft, a driving gear and a transmission gear. The motor is fixedly mounted on the inner top wall of the flash tank, one end of the rotating shaft is connected to the output end of the motor, and the other end is connected to the driving gear, and the transmission gear is fixedly arranged on the outer wall of the second salt water nozzle and meshes with the driving gear.

[0008] As a further improvement of the present invention: the mesh baffle assembly comprises an outer ring plate, a baffle and a center plate, The outer ring plate is installed on the inner wall of the flash tank, the center plate is arranged on the inner side of the outer ring plate, the partition net is fixedly installed between the outer ring plate and the center plate, and the second brine nozzle vertically penetrates the center plate.

[0009] As a further improvement of the present invention: a column is inserted and fixedly arranged inside the central plate, a spiral groove is provided on the inner wall of the column, and the second salt water nozzle passes through the inside of the column. The outer wall of the second salt water spray pipe is provided with a concave hole, a shift block is movably arranged inside the concave hole, a first elastic member is arranged inside the concave hole, the first elastic member is used to provide elastic support for the shift block, and one end of the shift block located outside the concave hole extends into the spiral groove. The first driving assembly includes a support rod, a support ring plate and a second elastic member. The support ring plate is sleeved on the outside of the second brine nozzle, one end of the support rod is fixedly connected to the inner wall of the flash box, and the other end is fixedly connected to the support ring plate, one end of the second elastic member is connected to the support ring plate, and the other end is connected to the center plate, which is used to provide elastic support for the center plate.

[0010] As a further improvement of the present invention: the first elastic member and the second elastic member are springs or metal springs.

[0011] As a further improvement of the present invention: the inner wall of the flash chamber is fixedly provided with vertically distributed guide rails, and the outer wall of the outer ring plate is provided with guide rail grooves matching with the guide rails.

[0012] As a further improvement of the present invention: a scraper assembly is also provided at the bottom of the separator, and the scraper assembly is used to scrape off the salt-containing crystal particles blocked at the bottom of the separator.

[0013] As a further improvement of the present invention: the outer wall of the second salt water nozzle is fixedly provided with vertically distributed keys, The scraper assembly includes a scraper bar, a bearing, a connecting rod and a sliding sleeve. The inner wall of the sliding sleeve is provided with a key groove, the sliding sleeve is movably mounted on the outside of the second brine nozzle and cooperates with the key through the key groove, the bearing is installed on the outside of the column, the scraper strips are provided with a plurality of groups, a plurality of the scraper strips are fixedly arranged on the outside of the bearing, a plurality of the scraper strips are attached to the bottom of the partition net, one end of the connecting rod is fixedly connected to the sliding sleeve, and the other end is fixedly connected to the scraper strip.

[0014] As a further improvement of the present invention: an exhaust pipe is arranged on the top of the flash chamber, a cleaning port is opened at the lower part of the side wall of the flash chamber, and a sealing door is arranged in the cleaning port.

[0015] Compared with the prior art, the present invention has the following beneficial effects: In the embodiment of the present invention, when high-salt water is treated, an external pump group can be used to spray high-salt water from the salt water spray assembly into the interior of the flash evaporation box. After the high-salt water is sprayed into the interior of the flash evaporation box, it is sprayed downward in a conical state. At the same time, the high-temperature steam generated by the external steam generator is sprayed into the interior of the flash evaporation box from the steam spray pipe. After the high-temperature steam is sprayed into the interior of the flash evaporation box, it is sprayed upward in a conical state, and then interacts with the high-salt water sprayed downward, so that the water in the high-salt water evaporates quickly and precipitates fine salt-containing crystalline particles. As the high-temperature steam continues to float up, the salt-containing crystalline particles are blocked by the mesh baffle assembly, so that the salt-containing crystalline particles are retained at the bottom of the mesh baffle assembly, thereby preventing the high-temperature steam from taking some fine salt-containing crystalline particles out of the flash evaporation box; in the above process, the salt water spray assembly is driven to rotate by the second drive assembly, so that the high-salt water sprayed into the interior of the flash evaporation box through the salt water spray assembly is in a rotating state, thereby increasing the high-salt The contact effect between water and high-temperature steam improves the treatment effect of high-salt water, and the mesh baffle assembly is driven up and down by the first driving assembly, so that the high-temperature steam sprayed from the steam spray pipe can act on different areas of the mesh baffle assembly, and then the salt-containing crystalline particles floating with the high-temperature steam are blown to different positions at the bottom of the mesh baffle assembly, thereby improving the baffle efficiency of the mesh baffle assembly for the salt-containing crystalline particles, and as the high-temperature steam blows the salt-containing crystalline particles to different positions at the bottom of the mesh baffle assembly, the salt-containing crystalline particles previously blown to the bottom of the mesh baffle assembly lose the subsequent blowing power and can fall down by themselves and be collected at the bottom of the inner side of the flash chamber, thereby realizing the automatic collection of the salt-containing crystalline particles. Compared with the existing technology, it can effectively prevent the high-temperature steam from taking a small amount of fine salt-containing crystalline particles out of the flash chamber, avoid the loss of salt-containing crystalline particles, and improve the collection efficiency of salt-containing crystals. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a high-salt water and superheated steam vacuum spray flash device; Figure 2 A schematic diagram of the internal structure of a flash tank in a high-salt water and superheated steam vacuum spray flash device Figure 1 ; Figure 3 A schematic diagram of the internal structure of a flash tank in a high-salt water and superheated steam vacuum spray flash device Figure 2 ; Figure 4 It is a structural schematic diagram of a mesh baffle assembly in a high-salt water and superheated steam vacuum spray flash device; Figure 5 It is a schematic diagram of the structure of the second salt water nozzle in a high salt water and superheated steam vacuum spray flash device; Figure 6 for Figure 2 A magnified schematic diagram of the middle A area; Figure 7 for Figure 5 A magnified schematic diagram of the middle B area; In the figure: 10-flash box, 101-exhaust pipe, 102-sealed door, 103-guide rail, 20-salt water spray assembly, 201-first salt water spray pipe, 202-second salt water spray pipe, 203-salt water spray head, 204-key, 205-concave hole, 206-first elastic member, 207-push block, 30-steam spray pipe, 301-steam spray head, 40-mesh baffle assembly, 401-outer ring plate, 402-partition net , 403-center plate, 404-column, 405-spiral groove, 406-guide groove, 50-first drive assembly, 501-support rod, 502-support ring plate, 503-second elastic member, 60-second drive assembly, 601-motor, 602-rotating shaft, 603-drive gear, 604-transmission gear, 70-scraper assembly, 701-scraper strip, 702-bearing, 703-connecting rod, 704-sleeve. DETAILED DESCRIPTION

[0017] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0018] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0019] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] See also Figure 1 , Figure 2 as well as Figure 3The present embodiment provides a high-salt water and superheated steam vacuum spray flash device, comprising a flash box 10, a salt water spray assembly 20, a steam spray pipe 30, a mesh baffle assembly 40, a first drive assembly 50 and a second drive assembly 60, wherein the salt water spray assembly 20 extends from the top of the flash box 10 to the inside of the flash box 10, and is used to spray high-salt water into the flash box 10 in a conical state, and the steam spray pipe 30 extends from the bottom of the flash box 10 to the inside of the flash box 10, and is used to spray high-temperature steam into the flash box 10 in a conical state. To the inside of the flash tank 10, the mesh barrier assembly 40 is arranged inside the flash tank 10, and is used to block the salt-containing crystalline particles floating with the steam. The first drive assembly 50 and the second drive assembly 60 are installed on the inner wall of the flash tank 10. The second drive assembly 60 is used to drive the brine spray pipe 20 to rotate, and the first drive assembly 50 is used to drive the mesh barrier assembly 40 to move up and down, so that the high-temperature steam sprayed from the steam spray pipe 30 can act on different areas of the mesh barrier assembly 40.

[0022] When treating high-salt water, an external pump group can be used to spray high-salt water from the salt water spray assembly 20 into the flash tank 10. After the high-salt water is sprayed into the flash tank 10, it is sprayed downward in a conical state. At the same time, the high-temperature steam generated by the external steam generator is sprayed into the flash tank 10 from the steam spray pipe 30. After the high-temperature steam is sprayed into the flash tank 10, it is sprayed upward in a conical state, and then interacts with the high-salt water sprayed downward, so that the water in the high-salt water evaporates quickly and tiny salt-containing crystalline particles are precipitated. As the high-temperature steam continues to float, the salt-containing crystalline particles are blocked by the mesh barrier assembly 40, so that the salt-containing crystalline particles are retained at the bottom of the mesh barrier assembly 40, so as to prevent the high-temperature steam from taking some tiny salt-containing crystalline particles out of the flash tank; in the above process, the salt water spray assembly 20 is driven to rotate by the second drive assembly 60, so that the salt water sprayed by the salt water spray assembly 20 is The high-salt water sprayed into the flash tank 10 by the shower assembly 20 is in a rotating state, thereby increasing the contact effect between the high-salt water and the high-temperature steam and improving the treatment effect of the high-salt water. The mesh barrier assembly 40 is driven up and down by the first drive assembly 50, so that the high-temperature steam sprayed from the steam spray pipe 30 can act on different areas of the mesh barrier assembly 40, and then the salt-containing crystalline particles floating with the high-temperature steam are blown to different positions at the bottom of the mesh barrier assembly 40, thereby improving the barrier efficiency of the mesh barrier assembly 40 for the salt-containing crystalline particles. As the high-temperature steam blows the salt-containing crystalline particles to different positions at the bottom of the mesh barrier assembly 40, the salt-containing crystalline particles previously blown to the bottom of the mesh barrier assembly 40 can fall down by themselves and be collected at the bottom of the inner side of the flash tank 10 due to the loss of subsequent blowing power, thereby realizing the automatic collection of the salt-containing crystalline particles.

[0023] See also Figure 2 In one embodiment, the brine spray assembly 20 includes a first brine spray pipe 201, a second brine spray pipe 202 and a brine spray head 203. One end of the first brine spray pipe 201 is connected to an external pump group (not shown in the figure), and the other end extends from the top of the flash tank 10 to the inside of the flash tank 10 and is fixedly connected to the flash tank 10. The second brine spray pipe 202 is arranged inside the flash tank 10. The upper end of the second brine spray pipe 202 is connected to the first brine spray pipe 201 through a rotary joint, and the lower end is connected to the brine spray head 203.

[0024] The high-salt water is pumped from the first salt water nozzle 201 into the second salt water nozzle 202 by an external pump group, and then enters the salt water nozzle 203 from the second salt water nozzle 202, and finally the salt water is sprayed out in a cone state by the salt water nozzle 203.

[0025] See also Figure 2 In one embodiment, one end of the steam spray pipe 30 is connected to an external steam generator, and the other end extends from the bottom of the flash tank 10 to the inside of the flash tank 10 and is connected to a steam spray head 301.

[0026] The external steam generator sends the generated high-temperature steam into the steam nozzle 301 from the steam spray pipe 30, and then the steam nozzle 301 sprays it out in a conical state. The high-temperature steam in a conical state moves upward along the inside of the flash tank 10, and then meets the high-salt water in a conical state, causing the high-salt water to produce violent flash crystallization.

[0027] See also Figure 3 In one embodiment, the second driving assembly 60 includes a motor 601, a rotating shaft 602, a driving gear 603 and a transmission gear 604. The motor 601 is fixedly mounted on the inner top wall of the flash tank 10. One end of the rotating shaft 602 is connected to the output end of the motor 601, and the other end is connected to the driving gear 603. The transmission gear 604 is fixedly arranged on the outer wall of the second brine nozzle 202 and meshes with the driving gear 603.

[0028] The motor 601 drives the rotating shaft 602 to rotate, which in turn drives the driving gear 603 to rotate. The meshing action of the driving gear 603 and the transmission gear 604 drives the second brine nozzle 202 to rotate compared with the first brine nozzle 201. When the second brine nozzle 202 rotates, it drives the brine nozzle 203 to rotate, so that the high-salt water sprayed through the brine nozzle 203 is in a rotating state, thereby increasing the contact effect between the high-salt water and the floating steam, and improving the flash crystallization effect of the high-salt water.

[0029] See also Figure 2 , Figure 3as well as Figure 4 In one embodiment, the mesh baffle assembly 40 includes an outer ring plate 401, a partition net 402 and a center plate 403. The outer ring plate 401 is installed on the inner wall of the flash tank 10, and the center plate 403 is arranged on the inner side of the outer ring plate 401. The partition net 402 is fixedly installed between the outer ring plate 401 and the center plate 403, and the second brine nozzle 202 vertically penetrates the center plate 403.

[0030] Since the second brine nozzle 202 vertically penetrates the center plate 403, the brine nozzle 203 is located below the partition net 402. When the high-salt water is sprayed out through the brine nozzle 203 and contacts the rising high-temperature steam, the high-salt water is rapidly flash evaporated and crystallized. The fine salt-containing particles produced during the crystallization will float up with the subsequent rising high-temperature steam. The floating salt-containing particles act on the bottom of the partition net 402 and are then blocked by the partition net 402, so as to prevent the high-temperature steam from bringing the salt-containing particles out of the flash tank 10.

[0031] See also Figure 2 , Figure 3 , Figure 4 , Figure 5 as well as Figure 7 In one embodiment, a column 404 is inserted and fixedly arranged inside the center plate 403, a spiral groove 405 is provided on the inner wall of the column 404, the second salt water nozzle 202 passes through the inside of the column 404, a concave hole 205 is provided on the outer wall of the second salt water nozzle 202, a shift block 207 is movably arranged inside the concave hole 205, a first elastic member 206 is arranged inside the concave hole 205, the first elastic member 206 is used to provide elastic support for the shift block 207, the shift block 207 is located outside the concave hole 205 One end of the first driving assembly 50 extends to the inside of the spiral groove 405, the first driving assembly 50 includes a support rod 501, a support ring plate 502 and a second elastic member 503, the support ring plate 502 is sleeved on the outside of the second brine nozzle 202, one end of the support rod 501 is fixedly connected to the inner wall of the flash tank 10, and the other end is fixedly connected to the support ring plate 502, one end of the second elastic member 503 is connected to the support ring plate 502, and the other end is connected to the center plate 403, for providing elastic support to the center plate 403.

[0032] Initially, the shift block 207 is extended to the inner bottom of the spiral groove 405 under the support of the first elastic member 206. When the motor 601 drives the rotating shaft 602 to rotate and then drives the second salt water nozzle 202 to rotate, the second salt water nozzle 202 drives the shift block 207 to rotate synchronously. When the shift block 207 rotates, it cooperates with the spiral groove 407 to push the column 404 so that the column 404, the center plate 403, the partition net 402 and the outer ring plate 401 move upward as a whole. The second elastic member 503 is compressed. When the shift block 207 slides to the upper end of the spiral groove 407, it can slide out of the spiral groove 407. At this time, the second elastic member 503 pushes the center plate 403, thereby driving the center plate 403, the partition net 402, the outer ring plate 401 and the column The cylinder 404 moves downward as a whole, and the shifting block 207 is received into the recessed hole 205, so that the first elastic member 206 is in a compressed state. When the cylinder 404 moves downward to the initial position, the shifting block 207 re-extends into the inner bottom position of the spiral groove 405 under the support of the first elastic member 206, thereby driving the cylinder 404, the center plate 403, the partition net 402 and the outer ring plate 401 to move upward as a whole again. Such a reciprocating cycle can realize the up and down reciprocating movement of the partition net 402, so that the high-temperature steam sprayed from the steam spray pipe 30 acts on different areas at the bottom of the partition net 402, thereby realizing the effective use of the partition net 402 and allowing the salt-containing crystalline particles blocked at the bottom of the partition net 402 to fall down by themselves, thereby realizing the convenient collection of the salt-containing crystalline particles.

[0033] In one embodiment, the first elastic member 206 and the second elastic member 503 may be springs or metal springs, which are not limited herein.

[0034] See also Figure 2 as well as Figure 4 In one embodiment, a vertically distributed guide rail 103 is fixedly provided on the inner wall of the flash tank 10 , and a guide rail groove 406 matching with the guide rail 103 is opened on the outer wall of the outer ring plate 401 .

[0035] The outer wall of the outer ring plate 401 is slidably matched with the guide rail 103 through the guide rail groove 406, thereby providing a guide for the partition net 402 to move up and down along the inside of the flash tank 10, so as to ensure the stability of the partition net 402 when moving up and down.

[0036] See also Figure 3 In one embodiment, a scraper assembly 70 is further provided at the bottom of the partition 402, and the scraper assembly 70 is used to scrape off the salt-containing crystal particles blocked at the bottom of the partition 402, thereby improving the cleaning effect of the salt-containing crystal particles at the bottom of the partition 402.

[0037] See also Figure 3 as well as Figure 6In one embodiment, the outer wall of the second salt water nozzle 202 is fixedly provided with vertically distributed keys 204, the scraper assembly 70 includes a scraper bar 701, a bearing 702, a connecting rod 703 and a sleeve 704, the inner wall of the sleeve 704 is provided with a key groove (not shown in the figure), the sleeve 704 is movably sleeved on the outside of the second salt water nozzle 202 and is provided with the key 204 through the key groove, the bearing 702 is installed on the outside of the column 404, the scraper bar 701 is provided with a plurality of groups, a plurality of the scraper bars 701 are fixedly provided on the outside of the bearing 702, a plurality of the scraper bars 701 are attached to the bottom of the partition net 402, one end of the connecting rod 703 is fixedly connected to the sleeve 704, and the other end is fixedly connected to the scraper bar 701.

[0038] When the motor 601 drives the second salt water nozzle 202 to rotate, the key 204 and the key slot cooperate to drive the sleeve 704 to rotate synchronously with the second salt water nozzle 202. When the sleeve 704 rotates, the connecting rod 703 drives the scraper 701 to rotate in contact with the bottom of the partition 402, thereby scraping off the salt-containing crystal particles blocked at the bottom of the partition 402, thereby further cleaning the salt-containing crystal particles. The scraped salt-containing crystal particles fall to the bottom of the inner side of the flash tank 10; 02 rotates, due to the cooperation of the shift block 207 and the second elastic member 503, the outer ring plate 401, the partition net 402, the center plate 403 and the column 404 are in an up and down moving state, and when the column 404 moves up and down, it will drive the scraper bar 701, the connecting rod 703 and the sliding sleeve 704 to move up and down synchronously through the bearing 702. Therefore, the scraper bar 701 can move up and down synchronously with the partition net 402, and the scraper bar 701 itself rotates, thereby realizing the efficient scraping of the salt crystal particles at the bottom of the partition net 402.

[0039] See also Figure 1 In one embodiment, an exhaust pipe 101 is disposed on the top of the flash tank 10, a cleaning port is opened at the lower part of the side wall of the flash tank 101, and a sealing door 102 is disposed in the cleaning port.

[0040] After the high-temperature steam reacts with the high-salt water, it can pass through the partition 402 and then be discharged from the exhaust pipe 101. After the high-salt water treatment is completed, the sealing door 102 can be opened to clean and discharge the salt-containing crystal particles that fall on the bottom of the flash tank 10.

[0041] The working principle of the present invention is as follows: Start the external pump group and the external steam generator. The external pump group pumps the high-salt water through the first salt water nozzle 201 to the inside of the second salt water nozzle 202, and then the second salt water nozzle 202 enters the salt water nozzle 203, and finally the salt water nozzle 203 sprays it into the flash tank 10 in a conical state. The external steam generator transports the generated high-temperature steam from the steam spray pipe 30 to the steam nozzle 301, and then the steam nozzle sprays the high-temperature steam into the flash tank 10 in a conical state. The high-salt water in a conical state contacts with the high-temperature steam in the flash tank 10, and the water in the high-salt water evaporates rapidly to precipitate fine salt-containing crystalline particles. The fine salt-containing crystalline particles are blocked at the bottom of the partition 402 under the subsequent floating effect of the high-temperature steam, and the high-temperature steam passes through the partition 402 and is discharged from the exhaust pipe 101.

[0042] In the embodiment of the present invention, when high-salt water is treated, an external pump group can be used to spray high-salt water from the salt water spray assembly 20 into the interior of the flash evaporation box 10. After the high-salt water is sprayed into the interior of the flash evaporation box 10, it is sprayed downward in a conical state. At the same time, the high-temperature steam generated by the external steam generator is sprayed into the interior of the flash evaporation box 10 from the steam spray pipe 30. After the high-temperature steam is sprayed into the interior of the flash evaporation box 10, it is sprayed upward in a conical state, and then interacts with the high-salt water sprayed downward, so that the water in the high-salt water evaporates quickly and precipitates fine salt-containing crystalline particles. As the high-temperature steam continues to float, the salt-containing crystalline particles are blocked by the mesh baffle assembly 40, so that the salt-containing crystalline particles are retained at the bottom of the mesh baffle assembly 40, thereby preventing the high-temperature steam from taking some fine salt-containing crystalline particles out of the flash evaporation box; in the above process, the salt water spray assembly 20 is driven to rotate by the second drive assembly 60, so that the high-salt water sprayed into the interior of the flash evaporation box 10 through the salt water spray assembly 20 is in a rotating state, thereby increasing The contact effect between the high-salt water and the high-temperature steam improves the treatment effect of the high-salt water, and the first driving component 50 drives the mesh barrier component 40 to move up and down, so that the high-temperature steam sprayed from the steam spray pipe 30 can act on different areas of the mesh barrier component 40, and then blow the salt-containing crystalline particles floating with the high-temperature steam to different positions at the bottom of the mesh barrier component 40, thereby improving the barrier efficiency of the mesh barrier component 40 for the salt-containing crystalline particles, and as the high-temperature steam blows the salt-containing crystalline particles to different positions at the bottom of the mesh barrier component 40, the salt-containing crystalline particles previously blown to the bottom of the mesh barrier component 40 lose the subsequent blowing power and can fall down by themselves and be collected at the bottom of the inner side of the flash tank 10, thereby realizing the automatic collection of the salt-containing crystalline particles. Compared with the prior art, it can effectively prevent the high-temperature steam from taking a small amount of fine salt-containing crystalline particles out of the flash tank 10, avoid the loss of salt-containing crystalline particles, and improve the collection efficiency of salt-containing crystals.

[0043] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference numerals in the claims should not be regarded as limiting the claims involved.

[0044] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity, and those skilled in the art should regard the specification as a whole.

Claims

1. A high-salt water and superheated steam vacuum spray flash device, characterized in that: It includes a flash tank, a salt water spray assembly, a steam spray pipe, a mesh baffle assembly, a first drive assembly and a second drive assembly. The salt water spray assembly extends from the top of the flash tank to the inside of the flash tank, and is used to spray high salt water into the inside of the flash tank in a conical state. The steam spray pipe extends from the bottom of the flash tank to the inside of the flash tank, and is used to spray high-temperature steam into the inside of the flash tank in a conical state. The mesh baffle assembly is arranged inside the flash tank and is used to baffle the salt-containing crystal particles floating up with the steam. The first drive assembly and the second drive assembly are installed on the inner wall of the flash tank, and the second drive assembly is used to drive the salt water spray pipe to rotate. The first driving assembly is used to drive the mesh baffle assembly to move up and down, so that the high-temperature steam sprayed from the steam spray pipe can act on different areas of the mesh baffle assembly.

2. A high salt water and superheated steam vacuum spray flash device according to claim 1, characterized in that: The salt water spray assembly comprises a first salt water spray pipe, a second salt water spray pipe and a salt water spray head. One end of the first salt water nozzle is connected to an external pump group, and the other end extends from the top of the flash tank to the inside of the flash tank and is fixedly connected to the flash tank. The second salt water nozzle is arranged inside the flash tank, and the upper end of the second salt water nozzle is connected to the first salt water nozzle through a rotary joint, and the lower end is connected to the salt water nozzle. One end of the steam spray pipe is connected to an external steam generator, and the other end extends from the bottom of the flash tank to the inside of the flash tank and is connected to a steam spray head.

3. A high salt water and superheated steam vacuum spray flash device according to claim 2, characterized in that: The second driving assembly includes a motor, a rotating shaft, a driving gear and a transmission gear. The motor is fixedly mounted on the inner top wall of the flash tank, one end of the rotating shaft is connected to the output end of the motor, and the other end is connected to the driving gear, and the transmission gear is fixedly arranged on the outer wall of the second salt water nozzle and meshes with the driving gear.

4. A high-salt water and superheated steam vacuum spray flash evaporation device according to claim 3, characterized in that: The mesh baffle assembly includes an outer ring plate, a baffle and a center plate. The outer ring plate is installed on the inner wall of the flash tank, the center plate is arranged on the inner side of the outer ring plate, the partition net is fixedly installed between the outer ring plate and the center plate, and the second brine nozzle vertically penetrates the center plate.

5. A high-salt water and superheated steam vacuum spray flash evaporation device according to claim 4, characterized in that: A column is inserted and fixedly arranged inside the central plate, a spiral groove is opened on the inner wall of the column, and the second salt water nozzle passes through the column. The outer wall of the second salt water spray pipe is provided with a concave hole, a shift block is movably arranged inside the concave hole, a first elastic member is arranged inside the concave hole, the first elastic member is used to provide elastic support for the shift block, and one end of the shift block located outside the concave hole extends into the spiral groove. The first driving assembly includes a support rod, a support ring plate and a second elastic member. The support ring plate is sleeved on the outside of the second brine nozzle, one end of the support rod is fixedly connected to the inner wall of the flash box, and the other end is fixedly connected to the support ring plate, one end of the second elastic member is connected to the support ring plate, and the other end is connected to the center plate, which is used to provide elastic support for the center plate.

6. A high salt water and superheated steam vacuum spray flash device according to claim 5, characterized in that: The first elastic member and the second elastic member are springs or metal springs.

7. A high salt water and superheated steam vacuum spray flash evaporation device according to claim 4, characterized in that: The inner wall of the flash box is fixedly provided with vertically distributed guide rails, and the outer wall of the outer ring plate is provided with guide rail grooves matching with the guide rails.

8. The high-salt water and superheated steam vacuum spray flash evaporation device according to claim 5, characterized in that: A scraper assembly is also provided at the bottom of the screen, and the scraper assembly is used to scrape off the salt-containing crystal particles blocked at the bottom of the screen.

9. A high-salt water and superheated steam vacuum spray flash evaporation device according to claim 8, characterized in that: The outer wall of the second salt water nozzle is fixedly provided with vertically distributed keys. The scraper assembly includes a scraper bar, a bearing, a connecting rod and a sliding sleeve. The inner wall of the sliding sleeve is provided with a key groove, the sliding sleeve is movably mounted on the outside of the second brine nozzle and cooperates with the key through the key groove, the bearing is installed on the outside of the column, the scraper strips are provided with a plurality of groups, a plurality of the scraper strips are fixedly arranged on the outside of the bearing, a plurality of the scraper strips are attached to the bottom of the partition net, one end of the connecting rod is fixedly connected to the sliding sleeve, and the other end is fixedly connected to the scraper strip.

10. The high salt water and superheated steam vacuum spray flash device according to claim 1, characterized in that: An exhaust pipe is arranged on the top of the flash box body, a cleaning port is opened at the lower part of the side wall of the flash box body, and a sealing door is arranged in the cleaning port.

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