High-purity zinc sulfide anti-fluctuation gas-liquid synthesis inner loop production equipment

Abstract

The application relates to the technical field of zinc sulfide production equipment, in particular to a high-purity zinc sulfide anti-fluctuation gas-liquid synthesis internal circulation production equipment, which comprises a reaction kettle, a blending tank, a gas cylinder group, a liquid preparation tank and a centrifugal machine. A center cylinder is arranged in the kettle body of the reaction kettle, a crystallization zone is formed between the outer wall of the center cylinder and the inner wall of the kettle body, first and second feeding inlets are arranged on the kettle cover, a plurality of feeding inlets communicating with the crystallization zone are arranged on the periphery of the kettle body, each feeding inlet is assembled with a Venturi ejector, the blending tank is connected with the second feeding inlet through a second pumping pipeline, the gas cylinder group is connected with the air suction port of the Venturi ejector through a gas conveying pipeline, the liquid preparation tank is connected with the liquid inlet thereof through a first pumping pipeline, the discharge port at the bottom of the kettle body is connected with the centrifugal machine through a pipeline, and the liquid outlet of the centrifugal machine is connected with the first feeding inlet through a third pumping pipeline. The application strengthens the gas-liquid mixing through the Venturi ejector, improves the gas-liquid specific surface area and the hydrogen sulfide dissolution and diffusion rate, makes the zinc ion and the zinc sulfide precipitation reaction proceed synchronously and uniformly, forms the internal circulation, and improves the anti-fluctuation and the purity of the zinc sulfide.

Description

Technical Field

[0001] This invention relates to the field of zinc sulfide production equipment technology, specifically to a high-purity zinc sulfide anti-fluid-stress gas-liquid synthesis internal circulation production equipment. Background Technology

[0002] Zinc sulfide is an important wide-bandgap semiconductor, fluorescent matrix, and optical powder material, widely used in optical coatings, light-emitting devices, semiconductor substrates, and infrared window materials. Currently, the main industrial methods for preparing zinc sulfide include vapor deposition, co-precipitation, gas-liquid mixing, and hydrogenation.

[0003] The gas-liquid mixing method typically involves thoroughly mixing and reacting a zinc-containing solution with hydrogen sulfide gas under controlled conditions, causing zinc sulfide to precipitate. The product is then obtained through solid-liquid separation, washing, drying, and necessary heat treatment. This method offers advantages such as relatively simple process, mild reaction conditions, ease of scale-up production, and high product purity.

[0004] However, traditional gas-liquid mixing methods still face significant problems in actual production. First, gas-liquid mixing relies on simple mechanical stirring, resulting in uneven gas dispersion, large fluctuations in the reaction interface, and a high likelihood of local over-reaction and under-reaction, leading to product inclusion of byproducts and severe crystal agglomeration. Second, byproducts generated in the reaction (such as sulfuric acid and hydrochloric acid) lower the pH of the system and cause fluctuations, adversely affecting the precipitation process of hydrogen sulfide, interfering with nucleation and crystal growth, widening the product particle size distribution, causing uneven morphology, and exacerbating agglomeration and impurity entrainment. Summary of the Invention

[0005] The purpose of this invention is to provide a high-purity zinc sulfide anti-fluid-stress gas-liquid synthesis internal circulation production equipment, which aims to solve the technical problems of large reaction fluctuations, uneven gas-liquid mixing, and poor product consistency in the existing technology, and to achieve stable, continuous, and efficient production of high-purity zinc sulfide.

[0006] To achieve the above objectives, the present invention includes a reaction vessel, a mixing tank, a gas cylinder assembly, a liquid preparation tank, and a centrifuge. The reaction vessel includes a vessel body and a lid located on top of the vessel body. The inner cavity of the vessel body has a central cylinder, and a crystallization zone is formed between the outer wall of the central cylinder and the inner wall of the vessel body. The lid has a second inlet facing the crystallization zone and a first inlet facing the inner cavity of the central cylinder. The outer peripheral wall of the vessel body has multiple inlets arranged around and communicating with the crystallization zone. Each inlet is equipped with a Venturi injector. The mixing tank stores a pH buffer solution. The discharge end of the mixing tank is connected to the second inlet via a second pumping pipe. The output end of the gas cylinder group is connected to the suction port of each Venturi injector via a gas supply pipeline. The liquid preparation tank stores a compound solution of zinc salt solution and dispersant. The discharge end of the liquid preparation tank is connected to the liquid inlet of each Venturi injector via a first pumping pipe. The bottom of the vessel is provided with a discharge port, which is connected to the feed pipe of the centrifuge via a pipeline. One of the liquid outlets at the bottom of the centrifuge is connected to the first inlet via a third pumping pipe.

[0007] Preferably, the top of the central cylinder is lower than the set liquid level of the vessel, the discharge end of the feed inlet is obliquely downward toward the crystallization zone, and the jet of the Venturi injector pushes the fluid in the crystallization zone downward.

[0008] Preferably, the centrifuge includes a dispersion component, a base, and a housing disposed on the base. The liquid outlet is located at the bottom of the housing. A variable frequency motor is disposed on one side of the housing. A drive shaft extending into the inner cavity of the housing is rotatably mounted at the bottom of the housing. A filter cartridge is mounted on the upper end of the drive shaft. The lower end of the drive shaft is connected to the variable frequency motor. A top cover is provided on the top of the housing. A third geared motor is provided on the outer top of the top cover. The dispersion component is disposed in the inner cavity of the filter cartridge and is connected to the third geared motor. The feed pipe is located on the top cover, and one end of the feed pipe is connected to the dispersion component.

[0009] Preferably, the dispersing component includes an outer cone and an inner cone, the inner cone being fitted inside the outer cone, the outer cone being fixed to the inner bottom of the top cover, the inner cone being connected to a third reduction motor, the outer wall of the inner cone being provided with a plurality of circumferentially distributed fan blades, the bottom edge of the outer cone being provided with a first outwardly extending folded edge, and the bottom edge of the inner cone being provided with a second outwardly extending folded edge, the second folded edge and the first folded edge forming a dispersing channel.

[0010] Preferably, the first folded edge is horizontally positioned, and the second folded edge is parallel to the first folded edge.

[0011] Preferably, the second folded edge is horizontally positioned and forms an angle with the first folded edge.

[0012] Preferably, the inner cavity of the filter cartridge is fitted with a filter bag, the opening of the filter bag is fixedly connected to the opening of the filter cartridge, and the dispersion component is located inside the filter bag.

[0013] Preferably, the reactor further includes a stirring device; the stirring device includes a first geared motor and a second geared motor stacked on top of the reactor lid, the output shaft of the second geared motor is connected to a second rotating shaft extending into the reactor body, the second rotating shaft is provided with a second stirring paddle located in the inner cavity of the central cylinder, the output shaft of the first geared motor is connected to a first rotating shaft passing through the inner cavity of the second rotating shaft, and the end of the first rotating shaft is provided with a first stirring paddle whose outer edge extends to the crystallization zone.

[0014] Preferably, a spray ring pipe is suspended above the crystallization zone, and the inlet end of the spray ring pipe is connected to the second feed port.

[0015] Preferably, a gas buffer tank is provided on the gas pipeline.

[0016] After adopting the above technical solution, the beneficial effects of the present invention are: When the high-pressure zinc salt solution flows at high speed through the cavity of the Venturi injector, the cross-sectional area of ​​the throttling section shrinks sharply, causing a rapid increase in fluid velocity. A stable negative pressure is created inside the cavity, which can draw in hydrogen sulfide gas, eliminating the problems of gas short-circuiting and escaping that occur with traditional ventilation. The gas and liquid phases undergo intense turbulent shearing, impact, and entrainment at the Venturi throat and diffuser section, tearing the hydrogen sulfide gas into micron-sized microbubbles that are uniformly dispersed in the zinc salt solution. Compared to the drawbacks of directly introducing large gas bubbles, limited gas-liquid interface, and high mass transfer resistance, the Venturi mixing method significantly increases the gas-liquid specific surface area, enhances the dissolution and diffusion rate of hydrogen sulfide gas into the liquid phase, and allows the precipitation reaction of zinc ions and hydrogen sulfide to occur synchronously and uniformly throughout the entire jet system.

[0017] The Venturi injector obliquely injects the gas-liquid mixture into the crystallization zone through the feed port, giving the jet a downward velocity component. This downward jet propels the fluid in the crystallization zone downwards, while the fluid in the central cylinder overflows back into the crystallization zone from the top of the central cylinder, thus forming an internal circulation loop between the crystallization zone and the central cylinder cavity. This circulation dilutes the local supersaturation, bringing the system closer to the metastable region and reducing explosive nucleation; it also prolongs the residence time of crystal nuclei and fine crystals, allowing supersaturated solutes to preferentially deposit on the surface of existing crystal nuclei, promoting crystal growth.

[0018] The mixing tank stores pH buffer solution to continuously regulate the acid-base environment in the crystallization zone, neutralize hydrogen ions generated during the reaction, inhibit pH fluctuations, and improve resistance to fluctuations and the purity of zinc sulfide. Attached Figure Description

[0019] To clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the reactor structure; Figure 3 This is a schematic diagram of a centrifuge. Figure 4 This is a diagram showing the placement of the filter bags.

[0021] In the diagram: 1-Reaction vessel, 2-Third pump pipeline, 3-Mixing tank, 4-Second pump pipeline, 5-First geared motor, 6-Second geared motor, 7-First pump pipeline, 8-Gas buffer tank, 9-Gas cylinder group, 10-Liquid mixing tank, 11-Venturi ejector, 12-Centrifuge, 13-Vessel body, 14-Vessel lid, 15-Second feed inlet, 16-First feed inlet, 17-Liquid inlet, 18-Gas suction port, 19-Spray ring pipe, 20-Feed inlet 21-Central cylinder, 22-First rotating shaft, 23-Discharge port, 24-First stirring paddle, 25-Second stirring paddle, 26-Second rotating shaft, 27-Shell, 28-Filter cartridge, 29-First folded edge, 30-Top cover, 31-Third geared motor, 32-Feed pipe, 33-Fan blade, 34-Outer cone, 35-Variable frequency motor, 36-Drive pulley, 37-Second folded edge, 38-Liquid outlet, 39-Transmission pulley, 40-Inner cone, 41-Filter bag. Detailed Implementation

[0022] The present invention will now be further described with reference to the accompanying drawings and embodiments. The drawings are simplified schematic diagrams and are only used to illustrate the basic structure of the present invention.

[0023] like Figure 1 and Figure 2 As shown in the embodiment, a high-purity zinc sulfide anti-fluidity gas-liquid synthesis internal circulation production equipment is provided, including a reaction vessel 1, a mixing tank 3, a gas cylinder group 9, a liquid mixing tank 10, a Venturi injector 11, and a centrifuge 12.

[0024] The reactor 1 includes a vessel body 13, a stirring device, and a vessel cover 14 installed on top of the vessel body 13. A coaxially arranged central cylinder 21 is fixedly mounted inside the vessel body 13, and a crystallization zone is formed between the outer wall of the central cylinder 21 and the inner wall of the vessel body 13. The top of the central cylinder 21 is 50-150 mm lower than the set liquid level of the vessel body 13, or multiple overflow holes communicating with the crystallization zone are opened on the outer wall of the top of the central cylinder 21, so that the central cylinder 21 and the crystallization zone are kept in communication at the top, providing a top overflow channel for subsequent internal circulation.

[0025] The vessel lid 14 is provided with a first feed inlet 16 and a second feed inlet 15. The second feed inlet 15 is directly opposite the crystallization zone, and the first feed inlet 16 is directly opposite the inner cavity of the central cylinder 21. A spray ring pipe 19 is suspended above the crystallization zone, and the feed inlet end of the spray ring pipe 19 is connected to the inner port of the second feed inlet.

[0026] The outer periphery of the vessel body 13 is uniformly surrounded by 3 to 6 feed inlets 20 that communicate with the crystallization zone. Each feed inlet 20 is independently equipped with a Venturi ejector 11, which has a liquid inlet 17 and a gas inlet 18, aiming to achieve multi-point synchronous gas-liquid jet mixing reaction. The discharge end of the feed inlet 20 is angled downward toward the crystallization zone, so that the gas-liquid mixed jet has a downward velocity component. This downward jet pushes the fluid in the crystallization zone downward, while the fluid in the inner cavity of the central cylinder 21 overflows from the top of the central cylinder 21 back to the crystallization zone, thereby forming an internal circulation loop between the crystallization zone and the inner cavity of the central cylinder 21.

[0027] Zinc ions react with hydrogen sulfide to form zinc sulfide precipitate and hydrogen ions. If this reaction is not controlled, the pH of the system will drop rapidly, causing zinc sulfide to dissolve back. To address this, the mixing tank 3 stores a pH buffer solution, the discharge end of which is connected to the external port of the second inlet 15 via the second pumping pipe 4. This allows the pH buffer solution to be sprayed evenly onto the crystallization zone and distributed using a downward-flowing gas-liquid mixture jet, thus continuously regulating the acid-base environment of the crystallization zone.

[0028] The gas cylinder group 9 stores compressed hydrogen sulfide gas, and its output end is connected to the intake port 18 of each Venturi injector 11 via a gas delivery pipeline. A gas buffer tank 8 is provided on the gas delivery pipeline to stabilize the gas pressure and reduce airflow fluctuations.

[0029] The mixing tank 10 stores a compound solution of zinc salt solution and dispersant. Its outlet is connected to the inlet 17 of each Venturi injector 11 via the first pumping pipe 7. The dispersant can make the zinc sulfide precipitate generated in the crystallization zone uniform in particle size, prevent particles from adsorbing and agglomerating, and ensure that the powder grains are uniform in size and regular in morphology.

[0030] The bottom of the vessel body 13 is provided with a discharge port 23, which is connected to the feed pipe 32 of the centrifuge 12 through a pipeline. One of the liquid outlets 38 at the bottom of the centrifuge 12 is connected to the first feed port 16 through the third pumping pipe 2. Zinc sulfide precipitates of the target particle size are intercepted, and the mother liquor is returned to the vessel body 13, forming an external circulation loop.

[0031] like Figure 2As shown, the stirring device of the reactor 1 includes a first geared motor 5 and a second geared motor 6 stacked on top of the reactor lid 14. The output shaft of the second geared motor 6 is connected to a second rotating shaft 26 extending into the reactor body 13, and a second stirring paddle 25 located in the inner cavity of the central cylinder 21 is mounted on the second rotating shaft 26. The output shaft of the first geared motor 5 is connected to a first rotating shaft 22 passing through the inner cavity of the second rotating shaft 26, and a first stirring paddle 24 extending to the crystallization zone is located at the end of the first rotating shaft 22. The first geared motor 5 and the second geared motor 6 can be independently controlled in terms of rotation speed, so that the first stirring paddle 24 and the second stirring paddle 25 rotate at different speeds, or even in opposite directions. The second stirring paddle 25 generates high-speed shear dispersion in the inner cavity of the central cylinder 21, while the first stirring paddle 24 generates a large-scale low-speed circulation in the crystallization zone. The two work together to further homogenize the concentration, pH, and temperature field of the reaction zone and enhance the internal circulation.

[0032] like Figure 3 and Figure 4 As shown, the centrifuge 12 includes a dispersion assembly, a base, and a housing 27 mounted on the base. Two outlets 38 are provided, respectively located on both sides of the bottom of the housing 27. One outlet 38 is connected to the first inlet 16 via a third pumping pipe 2, participating in the external circulation. The other outlet 38 is connected to a storage tank via a pipeline for storing the centrifugal mother liquor.

[0033] A variable frequency motor 35 is fixed to the outside of the housing 27, and a drive shaft extending into the inner cavity of the housing 27 is rotatably mounted on the bottom of the housing 27. A filter cartridge 28 is fixed to the upper end of the drive shaft, and a transmission pulley 39 is fixed to the lower end of the drive shaft. The transmission pulley 39 is connected to the drive pulley 36 of the variable frequency motor 35 via a belt.

[0034] A top cover 30 is hinged to the top of the housing 27, and a third geared motor 31 is fixed to the outer top of the top cover 30. The dispersion component is located inside the filter cartridge 28 and is connected to the third geared motor 31 for transmission. The feed pipe 32 is located on the top cover 30, and the discharge end of the feed pipe 32 is connected to the dispersion component. The inlet end of the feed pipe 32 is connected to the pipeline entering the outlet 23 through a flexible pipe.

[0035] The dispersing assembly includes an outer cone 34 and an inner cone 40. The inner cone 40 is fitted inside the outer cone 34, and its outer wall is provided with multiple circumferentially distributed fan blades 33. The outer cone 34 is fixedly installed at the bottom of the top cover 30 with its large end facing downwards, while the small end of the inner cone 40 faces upwards and is fixedly connected to the output shaft of the third reduction motor 31. The discharge end of the feed pipe 32 extends from a pre-drilled hole in the outer cone 34 into the annular gap between the outer cone 34 and the inner cone 40.

[0036] The bottom edge of the outer cone 34 has a first outwardly extending flange 29, and the bottom edge of the inner cone 40 has a second outwardly extending flange 37. The second flange 37 and the first flange 29 form a dispersion channel. In one embodiment, the first flange 29 is horizontally positioned, and the second flange 37 is parallel to the first flange 29, forming a narrow, uniformly wide dispersion channel. In another embodiment, the second flange 37 is horizontally positioned and forms an angle with the first flange 29, forming a gradually narrowing or expanding dispersion channel, which can adjust the shear strength.

[0037] A detachable filter bag 41 is fitted inside the filter cartridge 28. The opening of the filter bag 41 is fixed to the opening of the filter cartridge 28 by a buckle or bolts, and the dispersion assembly is placed inside the filter bag 41. When the filter cartridge 28 rotates at high speed, the filter bag 41 adheres tightly to the inner wall of the filter cartridge 28 under centrifugal force and is rigidly supported by the filter cartridge 28. The zinc sulfide-containing material flows into the dispersion assembly through the feed pipe 32, is dispersed by the dispersion assembly, and is thrown towards the inner wall of the filter bag 41. Zinc sulfide particles that reach the target particle size are intercepted by the filter bag 41, while the liquid phase passes through the filter bag 41 and the filter cartridge 28 in sequence under centrifugal force and is discharged through the outlet 38. After the reaction is complete, the zinc sulfide can be collected by removing the filter bag 41 without disassembling the filter cartridge 28, and without the need for additional scraping, backwashing, or separate solid-liquid separation devices, thereby simplifying the unloading operation, shortening downtime, and reducing material loss.

[0038] The compound solution in the mixing tank 10 enters the inlet 17 of each Venturi injector 11 via the first pumping pipe 7. Hydrogen sulfide gas from the gas cylinder group 9 enters the suction port 18 of each Venturi injector 11 via the gas buffer tank 8. At the throat of the Venturi injector 11, the gas is drawn in by the high-speed liquid flow and sheared and dispersed, forming a gas-liquid mixed jet. The gas-liquid mixed jet is sprayed obliquely downwards into the crystallization zone through the feed inlet 20, propelling the fluid in the crystallization zone downwards. The fluid deflects back into the inner cavity of the central cylinder 21 at the lower part of the crystallization zone, flows upwards along the inner cavity of the central cylinder 21, and overflows from the top of the central cylinder 21 back to the upper part of the crystallization zone, forming an internal circulation. Zinc sulfide crystal nuclei participate in crystal growth with this circulation. The pH buffer solution in the mixing tank 3 enters the spray ring pipe 19 via the second pumping pipe 4 and the second feed inlet 15, and is evenly sprayed into the crystallization zone to neutralize the hydrogen ions generated in the reaction and maintain pH stability. The dispersant in the mixing tank 10 inhibits the agglomeration of zinc sulfide particles and controls the grain size and morphology. The slurry generated from the reaction enters the feed pipe 32 of the centrifuge 12 through the discharge port 23 at the bottom of the reactor body 13, and then enters the dispersion component. The third geared motor 31 drives the inner cone 40 and fan blades 33 to rotate, and the material is dispersed through the dispersion channel and enters the filter bag 41. The variable frequency motor 35 drives the filter cartridge 28 to rotate through the pulley drive. The liquid phase passes through the filter bag 41 and the filter cartridge 28 and is discharged through the liquid outlet 38, while the zinc sulfide particles are intercepted by the filter bag 41. One of the liquid outlets 38 at the bottom of the centrifuge 12 is connected to the first feed port 16 through the third pumping pipe 2. The mother liquor returns to the reactor body 13 and enters the inner cavity of the central cylinder 21 to participate in the internal and external circulation, recovering fine crystals and maintaining liquid level and concentration balance. The other liquid outlet 38 is connected to the storage tank for storing the centrifugal mother liquor after the reaction is completed.

Claims

1. A high-purity zinc sulfide anti-fluid-stress gas-liquid synthesis internal circulation production equipment, characterized in that: The reactor includes a reaction vessel (1), a mixing tank (3), a gas cylinder group (9), a liquid preparation tank (10), and a centrifuge (12). The reaction vessel (1) includes a vessel body (13) and a vessel cover (14) located on top of the vessel body (13). The inner cavity of the vessel body (13) is provided with a central cylinder (21). A crystallization zone is formed between the outer wall of the central cylinder (21) and the inner wall of the vessel body (13). The vessel cover (14) is provided with a second feed inlet (15) facing the crystallization zone and a first feed inlet (16) facing the inner cavity of the central cylinder (21). The outer peripheral wall of the vessel body (13) is provided with multiple feed inlets (20) that are distributed around and connected to the crystallization zone. Each feed inlet (20) is equipped with a Venturi injector (11). The mixing tank (3) stores a pH buffer solution. The discharge end of the mixing tank (3) is connected to the second inlet (15) through the second pumping pipe (4). The output end of the gas cylinder group (9) is connected to the air intake (18) of each Venturi injector (11) through the gas supply pipe. The liquid mixing tank (10) stores a compound solution of zinc salt solution and dispersant. The discharge end of the liquid mixing tank (10) is connected to the liquid inlet (17) of each Venturi injector (11) through the first pumping pipe (7). The bottom of the vessel body (13) is provided with a discharge port (23). The discharge port (23) is connected to the feed pipe (32) of the centrifuge (12) through a pipe. One of the liquid outlets (38) at the bottom of the centrifuge (12) is connected to the first inlet (16) through the third pumping pipe (2).

2. The high-purity zinc sulfide anti-fluid fluctuation gas-liquid synthesis internal circulation production equipment according to claim 1, characterized in that: The top of the central cylinder (21) is lower than the set liquid level of the vessel body (13), the discharge end of the feed inlet (20) is obliquely downward toward the crystallization zone, and the jet of the Venturi injector (11) pushes the fluid in the crystallization zone downward.

3. The high-purity zinc sulfide anti-fluid fluctuation gas-liquid synthesis internal circulation production equipment according to claim 1, characterized in that: The centrifuge (12) includes a dispersion component, a base, and a housing (27) on the base. The liquid outlet (38) is located at the bottom of the housing (27). A variable frequency motor (35) is provided on one side of the housing (27). A drive shaft extending into the inner cavity of the housing (27) is rotatably installed at the bottom of the housing (27). A filter cartridge (28) is installed at the upper end of the drive shaft. The lower end of the drive shaft is connected to the variable frequency motor (35) for transmission. A top cover (30) is provided at the top of the housing (27). A third reduction motor (31) is provided on the outer top of the top cover (30). The dispersion component is located in the inner cavity of the filter cartridge (28) and is connected to the third reduction motor (31) for transmission. The feed pipe (32) is located on the top cover (30). One end of the feed pipe (32) is connected to the dispersion component.

4. The high-purity zinc sulfide anti-fluid fluctuation gas-liquid synthesis internal circulation production equipment according to claim 3, characterized in that: The dispersion component includes an outer cone (34) and an inner cone (40). The inner cone (40) is fitted inside the outer cone (34). The outer cone (34) is fixed to the inner bottom of the top cover (30). The inner cone (40) is connected to the third reduction motor (31) for transmission. The outer wall of the inner cone (40) is provided with a plurality of fan blades (33) arranged around it. The bottom edge of the outer cone (34) is provided with a first folded edge (29) extending outward. The bottom edge of the inner cone (40) is provided with a second folded edge (37) extending outward. The second folded edge (37) and the first folded edge (29) form a dispersion channel.

5. The high-purity zinc sulfide anti-fluid fluctuation gas-liquid synthesis internal circulation production equipment according to claim 4, characterized in that: The first fold (29) is set horizontally, and the second fold (37) is parallel to the first fold (29).

6. The high-purity zinc sulfide anti-fluid fluctuation gas-liquid synthesis internal circulation production equipment according to claim 4, characterized in that: The second fold (37) is set horizontally and forms an angle with the first fold (29).

7. The high-purity zinc sulfide anti-fluid-stress gas-liquid synthesis internal circulation production equipment according to any one of claims 5 or 6, characterized in that: The filter cartridge (28) has a filter bag (41) installed inside its inner cavity. The opening of the filter bag (41) is fixedly connected to the opening of the filter cartridge (28). The dispersion component is located inside the filter bag (41).

8. The high-purity zinc sulfide anti-fluid fluctuation gas-liquid synthesis internal circulation production equipment according to claim 1, characterized in that: The reactor (1) also includes a stirring device; the stirring device includes a first geared motor (5) and a second geared motor (6) stacked on top of the reactor cover (14). The output shaft of the second geared motor (6) is connected to a second rotating shaft (26) extending into the reactor body (13). The second rotating shaft (26) is provided with a second stirring paddle (25) located in the inner cavity of the central cylinder (21). The output shaft of the first geared motor (5) is connected to a first rotating shaft (22) passing through the inner cavity of the second rotating shaft (26). The end of the first rotating shaft (22) is provided with a first stirring paddle (24) whose outer edge extends to the crystallization zone.

9. The high-purity zinc sulfide anti-fluid fluctuation gas-liquid synthesis internal circulation production equipment according to claim 1, characterized in that: A spray ring pipe (19) is suspended above the crystallization zone, and the inlet end of the spray ring pipe (19) is connected to the second feed port (15).

10. The high-purity zinc sulfide anti-fluid fluctuation gas-liquid synthesis internal circulation production equipment according to claim 1, characterized in that: A gas buffer tank (8) is installed on the gas pipeline.

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