Pretreatment reaction kettle for mercury recovery

Abstract

The utility model discloses a pretreatment reaction kettle for mercury recovery, which belongs to the technical field of mercury recovery, solves the problems that mercury-containing wastes are easy to splash outwards and have potential safety hazards when roller teeth of the existing device crush the mercury-containing wastes, and comprises a reaction kettle, and a feeding hopper is fixedly arranged on one side of the top surface of the reaction kettle; a feeding assembly is arranged in the reaction kettle, a water inlet assembly is arranged at the top end of the reaction kettle, a stirring assembly is arranged at the bottom end of the reaction kettle, and the feeding assembly comprises a receiving hopper, a connecting pipe, a protective hopper, a discharging hopper, a discharging pipe, an electromagnetic valve, a first motor, a stirring shaft, a spiral blade and a stirring blade. The first motor can drive the stirring shaft, the spiral blades and the stirring blades to rotate, through the arrangement of the protection hopper, the connecting pipe and the spiral blades, the situation that mercury-containing waste is splashed out through the discharging pipe during crushing can be avoided, the situation that people around the reaction kettle are injured by the mercury-containing waste is avoided, and the safety is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of mercury recovery, in particular to a pretreatment reactor for mercury recovery. Background Art

[0002] When producing low-mercury catalyst, most of the main raw materials required are mercury-containing wastes. The mercury-containing wastes are mainly mixtures of mercury oxide and mercury chloride. Mercury chloride is a highly toxic inorganic compound that can cause harm to the human body through inhalation, ingestion, and percutaneous absorption. When recovering mercury from waste mercury chloride catalyst, the waste mercury chloride catalyst needs to be mixed with quicklime and water in a reactor according to a certain proportion, and after the reaction is complete, the processes of drying and distillation can be carried out.

[0003] After retrieval, in the application with the patent application number 202223302819.2, a pretreatment device for mercury-containing wastes is disclosed, including: a reactor, a stirring mechanism is arranged inside the reactor, a motor, a crushing mechanism and a cleaning part are assembled on the top of the reactor, a feed pipe is arranged on one side of the reactor, and a "Y"-shaped pipe is arranged on the other side of the reactor; the cleaning part includes a high-pressure water gun, the high-pressure water gun is assembled inside the crushing mechanism, and a water delivery pipe is assembled at one end of the high-pressure water gun, and the water delivery pipe is used to connect the cleaning pipe and the high-pressure water gun;

[0004] Although this pretreatment device for mercury-containing wastes crushes the mercury-containing wastes through a crushing box and cleans the mercury-containing waste residues adhering to the crushing mechanism with a high-pressure water gun, improving the recovery rate of mercury in the mercury-containing wastes, when the roller teeth of this pretreatment device for mercury-containing wastes crush the mercury-containing wastes, it is easy to cause the mercury-containing wastes to splash outwards, having potential safety hazards.

[0005] Therefore, we propose a pretreatment reactor for mercury recovery. Summary of the Utility Model

[0006] Aiming at the deficiencies of the prior art, the utility model provides a pretreatment reactor for mercury recovery, which solves the problem that when the roller teeth of the existing device crush mercury-containing wastes, it is easy to cause the mercury-containing wastes to splash outwards, having potential safety hazards.

[0007] To achieve the above purposes, the utility model is realized through the following technical solutions: a pretreatment reactor for mercury recovery, including a reactor, a feeding hopper is fixedly installed on one side of the top surface of the reactor, the bottom end of the reactor is in a funnel shape and is fixedly installed with a discharge pipe, and a valve is installed on the discharge pipe; [[ID=2,7]]

[0008] An inlet assembly is arranged inside the reactor, a water inlet assembly is arranged at the top end of the reactor, and a stirring assembly is arranged at the bottom end of the reactor;

[0009] The feeding assembly includes a receiving hopper, a connecting pipe, a protective hopper, a discharging hopper, a discharging pipe, a solenoid valve, a first motor, a stirring shaft, spiral blades and stirring blades. The receiving hopper is fixedly installed on the inner wall of the reaction kettle. The bottom end of the receiving hopper is fixedly installed with a connecting pipe. The bottom end of the connecting pipe is fixedly installed with an inverted protective hopper. The bottom end of the protective hopper is fixedly installed with a discharging hopper of the same specification as it. Both the protective hopper and the discharging hopper are fixedly installed on the inner wall of the reaction kettle. The bottom end of the discharging hopper is fixedly installed with a discharging pipe. A solenoid valve is installed on the discharging pipe. The first motor is fixedly installed in the middle of the top surface of the reaction kettle. The output end of the first motor penetrates through the top surface of the reaction kettle and is fixedly connected with a stirring shaft. The stirring shaft extends to the bottom end of the discharging hopper. Spiral blades are fixedly sleeved on the outer surface of one end of the stirring shaft located inside the receiving hopper and the connecting pipe. Stirring blades are fixedly sleeved on one end of the stirring shaft located inside the protective hopper and the discharging hopper and are distributed in a linear array.

[0010] Preferably, the side of the spiral blade away from the stirring shaft fits with the inside of the connecting pipe. The side of the stirring blade is sharpened. Among them, the mercury-containing waste is put into the inside of the reaction kettle through the feeding hopper, and then falls onto the receiving hopper. The first motor can drive the stirring shaft, the spiral blades and the stirring blades to rotate. The spiral blades stir the mercury-containing waste in the receiving hopper to initially crush it and convey it to the protective hopper and the discharging hopper, and then the stirring blades cut and crush the mercury-containing waste in the protective hopper and the discharging hopper.

[0011] Preferably, the stirring assembly includes a second motor, a connecting rod and a V-shaped rod. There are two connecting rods in total. The bearing rings of the two connecting rods are rotatably installed on the inner wall of the bottom end of the reaction kettle. The second motor is fixedly installed on the side wall of the bottom end of the reaction kettle. The output end of the second motor penetrates through the side wall of the reaction kettle and is fixedly connected with one of the connecting rods. The two ends of the V-shaped rod are fixedly installed on the side walls of the two connecting rods. Among them, the second motor drives the connecting rod to rotate, and then drives the V-shaped rod to rotate at the bottom end inside the reaction kettle, so as to stir the reactants inside the reaction kettle.

[0012] Preferably, the V-shaped rods are distributed in a circular array along the outer surface of the connecting rod, and the contour of the V-shaped rod matches the contour of the bottom end of the reaction kettle. Among them, it is convenient to fully stir the reactants at the bottom end inside the reaction kettle.

[0013] Preferably, the water inlet assembly includes a water inlet pipe, a flow splitting ring and a spray head. The inside of the flow splitting ring is hollow and fixedly installed in the middle of the top surface inside the reaction kettle. The feeding hopper is located inside the flow splitting ring. The water inlet pipe is fixedly installed on the top surface of the reaction kettle. The bottom end of the water inlet pipe penetrates through the top surface of the reaction kettle and is communicated with the flow splitting ring. The bottom surface of the flow splitting ring is fixedly installed with spray heads distributed in an annular array. The water inlet pipe is communicated with an external water supply system. Among them, external water enters the inside of the flow splitting ring through the water inlet pipe and then is sprayed into the receiving hopper through the spray heads, so that the mercury-containing waste slag attached to the inner walls of the receiving hopper, the connecting pipe, the protective hopper, the discharge hopper and the discharge pipe can be cleaned.

[0014] The utility model provides a pretreatment reaction kettle for mercury recovery. It has the following beneficial effects:

[0015] 1. For this pretreatment reaction kettle for mercury recovery, the first motor can drive the stirring shaft, the spiral blade and the stirring blade to rotate. The mercury-containing waste inside the receiving hopper is conveyed to the protective hopper and the discharge hopper through the rotating spiral blade. Then, the mercury-containing waste can be cut and crushed by the rotating stirring blade. Subsequently, the crushed mercury-containing waste will be discharged to the bottom of the reaction kettle through the discharge pipe for reaction. Through the settings of the protective hopper, the connecting pipe and the spiral blade, it can avoid the situation that the mercury-containing waste splashes out through the discharge pipe when it is broken, and avoid the situation that people around the reaction kettle are injured by the mercury-containing waste, with higher safety. It solves the problem that the roller teeth of the existing device are prone to cause the mercury-containing waste to splash outwards when crushing the mercury-containing waste, which has potential safety hazards.

[0016] 2. For this pretreatment reaction kettle for mercury recovery, the water ejected by the spray head can wash the mercury-containing waste residue attached to the inner walls of the receiving hopper, the connecting pipe, the protective hopper and the discharge pipe to the bottom of the reaction kettle. The second motor drives the connecting rod to rotate, and then drives the V-shaped rod to rotate at the bottom end inside the reaction kettle, which can stir the reactants inside the reaction kettle and is beneficial to accelerating the reaction rate. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the utility model;

[0018] Figure 2 is a schematic cross-sectional structural diagram of the utility model;

[0019] Figure 3 is a schematic structural diagram of the water inlet assembly of the utility model;

[0020] Figure 4 is a schematic structural diagram of the stirring assembly of the utility model;

[0021] Figure 5 is a schematic exploded structural diagram of the feeding assembly of the utility model.

[0022] In the figure: 1, reaction kettle; 11, feeding hopper; 12, discharge pipe; 2, water inlet assembly; 21, water inlet pipe; 22, shunt ring; 23, spray head; 3, feeding assembly; 31, receiving hopper; 32, connecting pipe; 33, protective hopper; 34, discharge hopper; 35, discharge pipe; 36, solenoid valve; 37, first motor; 38, stirring shaft; 39, spiral blade; 310, stirring blade; 4, stirring assembly; 41, second motor; 42, connecting rod; 43, V-shaped rod. Specific implementation mode

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Embodiment 1:

[0025] As Figures 1-5As shown in the figure: It includes a reaction kettle 1. On one side of the top surface of the reaction kettle 1, a feeding hopper 11 is fixedly installed. The bottom end of the reaction kettle 1 is in a funnel shape and is fixedly installed with a discharge pipe 12. A valve is installed on the discharge pipe 12. An feeding component 3 is arranged inside the reaction kettle 1. A water inlet component 2 is arranged at the top end of the reaction kettle 1. A stirring component 4 is arranged at the bottom end of the reaction kettle 1. The feeding component 3 includes a receiving hopper 31, a connecting pipe 32, a protective hopper 33, a discharging hopper 34, a discharging pipe 35, an electromagnetic valve 36, a first motor 37, a stirring shaft 38, a spiral blade 39 and stirring blades 310. The receiving hopper 31 is fixedly installed on the inner wall of the reaction kettle 1. The bottom end of the receiving hopper 31 is fixedly installed with the connecting pipe 32. The bottom end of the connecting pipe 32 is fixedly installed with the protective hopper 33 arranged in an inverted manner. The bottom end of the protective hopper 33 is fixedly installed with the discharging hopper 34 having the same specification as it. Both the protective hopper 33 and the discharging hopper 34 are fixedly installed on the inner wall of the reaction kettle 1. The bottom end of the discharging hopper 34 is fixedly installed with the discharging pipe 35. The electromagnetic valve 36 is installed on the discharging pipe 35. The first motor 37 is fixedly installed in the middle of the top surface of the reaction kettle 1. The output end of the first motor 37 penetrates the top surface of the reaction kettle 1 and is fixedly connected with the stirring shaft 38. The stirring shaft 38 extends to the bottom end of the discharging hopper 34. The outer surface of one end of the stirring shaft 38 located inside the receiving hopper 31 and the connecting pipe 32 is fixedly sleeved with the spiral blade 39. One end of the stirring shaft 38 located inside the protective hopper 33 and the discharging hopper 34 is fixedly sleeved with the stirring blades 310 distributed in a linear array. The side of the spiral blade 39 away from the stirring shaft 38 is in fit with the inside of the connecting pipe 32. The side edges of the stirring blades 310 are sharpened. By the first motor 37, the stirring shaft 38, the spiral blade 39 and the stirring blades 310 can be driven to rotate. The mercury-containing waste inside the receiving hopper 31 is conveyed to the protective hopper 33 and the discharging hopper 34 through the rotating spiral blade 39. Then, the mercury-containing waste can be cut and crushed by the rotating stirring blades 310. Then, the crushed mercury-containing waste will be discharged to the bottom of the reaction kettle 1 through the discharging pipe 35 for reaction. Through the settings of the protective hopper 33, the connecting pipe 32 and the spiral blade 39, the situation that the mercury-containing waste splashes out through the discharge pipe 12 when it is broken can be avoided, and the situation that the people around the reaction kettle 1 are injured by the mercury-containing waste can be avoided, and the safety is higher;

[0026] Example 2:

[0027] As Figures 1-4As shown in the figure: The stirring assembly 4 includes a second motor 41, a connecting rod 42, and a V-shaped rod 43. There are two connecting rods 42 in total. The bearing rings of the two connecting rods 42 are rotatably installed on the inner wall of the bottom end of the reaction kettle 1. The second motor 41 is fixedly installed on the side wall of the bottom end of the reaction kettle 1. The output end of the second motor 41 penetrates through the side wall of the reaction kettle 1 and is fixedly connected to one of the connecting rods 42. The two ends of the V-shaped rod 43 are fixedly installed on the side walls of the two connecting rods 42. The V-shaped rods 43 are distributed in a circular array along the outer surface of the connecting rod 42. The contour of the V-shaped rod 43 matches the contour of the bottom end of the reaction kettle 1. The water inlet assembly 2 includes a water inlet pipe 21, a flow dividing ring 22, and a spray head 23. The inside of the flow dividing ring 22 is hollow and is fixedly installed in the middle of the top surface inside the reaction kettle 1. The feeding hopper 11 is located inside the flow dividing ring 22. The water inlet pipe 21 is fixedly installed on the top surface of the reaction kettle 1. The bottom end of the water inlet pipe 21 penetrates through the top surface of the reaction kettle 1 and is connected to the flow dividing ring 22. The bottom surface of the flow dividing ring 22 is fixedly installed with spray heads 23 distributed in a circular array. The water inlet pipe 21 is connected to an external water supply system. The water sprayed through the spray heads 23 can wash the mercury-containing waste residues attached to the inner walls of the receiving hopper 31, the connecting pipe 32, the protective hopper 33, and the discharge pipe 35 to the bottom of the reaction kettle 1. By driving the connecting rod 42 to rotate through the second motor 41, and then driving the V-shaped rod 43 to rotate at the bottom end inside the reaction kettle 1, the reactants inside the reaction kettle 1 can be stirred, which is beneficial to accelerating the reaction rate.

[0028] The working principle and usage process of the present utility model: For this pretreatment reaction kettle for mercury recovery, during use, first put lime and caustic soda into the reaction kettle 1 through the feeding hopper 11, and then put the mercury-containing waste into the inside of the reaction kettle 1 through the feeding hopper 11. Then the mercury-containing waste falls into the receiving hopper 31. Start the first motor 37 to drive the stirring shaft 38, the spiral blade 39, and the stirring blade 310 to rotate. Through the spiral blade 39, the mercury-containing waste in the receiving hopper 31 can be conveyed to the protective hopper 33 and the discharge hopper 34. Then, through the stirring blade 310, the mercury-containing waste in the protective hopper 33 and the discharge hopper 34 can be cut and crushed. Open the solenoid valve 36, and then the cut and crushed mercury-containing waste will enter the bottom of the reaction kettle 1 through the discharge hopper 34. Start the external water supply system. Then the water enters the inside of the flow dividing ring 22 through the water inlet pipe 21. Finally, the water is sprayed onto the inner wall of the receiving hopper 31 through the spray heads 23. Through the water, the mercury-containing waste residues attached to the inner walls of the receiving hopper 31, the connecting pipe 32, the protective hopper 33, and the discharge pipe 35 can be washed to the bottom of the reaction kettle 1. Then, lime, caustic soda, water, and mercury-containing waste react at the bottom of the reaction kettle 1. Start the second motor 41 to drive the connecting rod 42 to rotate, and then drive the V-shaped rod 43 to rotate at the bottom end inside the reaction kettle 1, which can stir the reactants inside the reaction kettle 1. After the reaction is complete, open the valve on the discharge pipe 12 to discharge the reaction product.

[0029] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic features of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0030] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pretreatment reactor for mercury recovery, comprising a reactor (1). One side of the top surface of the reactor (1) is fixedly installed with a feeding hopper (11). The bottom end of the reactor (1) is in a funnel shape and is fixedly installed with a discharge pipe (12), and a valve is installed on the discharge pipe (12). It is characterized in that: An inlet component (3) is arranged inside the reactor (1), a water inlet component (2) is arranged at the top end of the reactor (1), and a stirring component (4) is arranged at the bottom end of the reactor (1). The inlet component (3) includes a receiving hopper (31), a connecting pipe (32), a protective hopper (33), a discharge hopper (34), a discharge pipe (35), a solenoid valve (36), a first motor (37), a stirring shaft (38), a spiral blade (39) and a stirring blade (310). The receiving hopper (31) is fixedly installed on the inner wall of the reactor (1). The bottom end of the receiving hopper (31) is fixedly installed with a connecting pipe (32). The bottom end of the connecting pipe (32) is fixedly installed with an inverted protective hopper (33). The bottom end of the protective hopper (33) is fixedly installed with a discharge hopper (34) of the same specification as it. Both the protective hopper (33) and the discharge hopper (34) are fixedly installed on the inner wall of the reactor (1). The bottom end of the discharge hopper (34) is fixedly installed with a discharge pipe (35), and a solenoid valve (36) is installed on the discharge pipe (35). The first motor (37) is fixedly installed in the middle of the top surface of the reactor (1). The output end of the first motor (37) penetrates through the top surface of the reactor (1) and is fixedly connected with a stirring shaft (38). The stirring shaft (38) extends to the bottom end of the discharge hopper (34). A spiral blade (39) is fixedly sleeved on the outer surface of one end of the stirring shaft (38) located inside the receiving hopper (31) and the connecting pipe (32). A stirring blade (310) distributed in a linear array is fixedly sleeved on one end of the stirring shaft (38) located inside the protective hopper (�) and the discharge hopper (34).

2. The pretreatment reactor for mercury recovery according to claim 1, wherein: One side of the spiral blade (39) away from the stirring shaft (38) is attached to the inside of the connecting pipe (32), and the side edge of the stirring blade (310) is sharpened.

3. The pretreatment reactor for mercury recovery according to claim 1, characterized in that: The stirring component (4) includes a second motor (41), a connecting rod (42) and a V-shaped rod (43). There are two connecting rods (42) in total. The bearing rings of the two connecting rods (42) are rotatably installed on the inner wall of the bottom end of the reactor (1). The second motor (41) is fixedly installed on the side wall of the bottom end of the reactor (1). The output end of the second motor (41) penetrates through the side wall of the reactor (1) and is fixedly connected with one of the connecting rods (42). The two ends of the V-shaped rod (43) are fixedly installed on the side walls of the two connecting rods (42).

4. A pretreatment reactor for mercury recovery according to claim 3, characterized in that: The V-shaped rods (43) are distributed in a circular array along the outer surface of the connecting rod (42), and the contour of the V-shaped rod (43) matches the contour of the bottom end of the reactor (1).

5. The pretreatment reactor for mercury recovery according to claim 1, characterized in that: The water inlet assembly (2) includes a water inlet pipe (21), a flow dividing ring (22) and a spray head (23). The interior of the flow dividing ring (22) is hollow and it is fixedly installed in the middle of the top surface inside the reaction kettle (1). The feeding hopper (11) is located inside the inner ring of the flow dividing ring (22). The water inlet pipe (21) is fixedly installed on the top surface of the reaction kettle (1). The bottom end of the water inlet pipe (21) penetrates through the top surface of the reaction kettle (1) and is communicated with the flow dividing ring (22). The bottom surface of the flow dividing ring (22) is fixedly installed with spray heads (23) distributed in an annular array. The water inlet pipe (21) is communicated with an external water supply system.

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