Silver sulfate preparation reaction kettle with nitrate radical removal function

Abstract

The utility model belongs to the technical field of silver sulfate preparation, and in particular relates to a silver sulfate preparation reaction kettle with a nitrate radical removal function, which comprises a motor arranged at the top end of the reaction kettle; the stirring shaft is located in the reaction kettle, the top end of the stirring shaft is connected with the output end of the motor, and a pumping and draining mechanism is arranged on the stirring shaft; wherein the pumping and draining mechanism is suitable for pumping liquid at the liquid level in the reaction kettle and pumping the liquid to the bottom of the reaction kettle in the process that the motor drives the stirring shaft to rotate; the pumping and draining mechanism is arranged, in the process that the stirring shaft rotates and stirs liquid and silver nitrate in the stirring shaft, the liquid close to the liquid level and the silver nitrate on the liquid level are pumped into the bottom of the liquid to achieve circulation, then the silver nitrate is located at the bottom of the reaction kettle all the time, and the liquid around the silver nitrate is in a high-temperature state all the time; nitrate radicals are removed by high-temperature stirring;

Description

Technical Field

[0001] The utility model belongs to the technical field of silver sulfate preparation, and in particular relates to a silver sulfate preparation reaction kettle with a nitrate removal function. Background Art

[0002] Silver sulfate is a sulfate with the chemical formula Ag2SO4. It is soluble in nitric acid, ammonia water and concentrated sulfuric acid, insoluble in ethanol, slightly soluble in water, and increases with the decrease of the pH of the solution environment. When the hydrogen ion concentration is large enough, there can be obvious dissolution. It is used as an analytical reagent and a catalyst when determining the chemical oxygen demand in water. For the preparation of silver sulfate, silver nitrate is dissolved in hot water and then dissolved in an aqueous solution of ammonium sulfate. After filtering, heat and add this hot solution to the hot silver nitrate solution. After cooling, filter out the silver sulfate crystals by suction, then wash with water and dry.

[0003] In the traditional preparation of silver sulfate, nitrate is difficult to wash out. Nitrate is eliminated by high temperature and appropriate use of concentrated sulfuric acid. Sulfuric acid is reacted with silver nitrate, and the generated silver sulfate is dissolved in excess sulfuric acid. Since the boiling point of sulfuric acid is higher than that of nitric acid, the purpose of removing nitrate and refining silver sulfate is achieved under stirring at high temperature. However, in the process of stirring sulfuric acid and silver nitrate, the liquid temperature at the liquid surface will be lower than the liquid temperature at the bottom of the reactor, and part of the silver nitrate will be suspended at the liquid surface during stirring. Since the temperature at the liquid surface is low, the removal of nitrate is affected.

[0004] Therefore, a silver sulfate preparation reactor with nitrate removal function is designed to solve the technical problem in the prior art that the liquid temperature around the silver sulfate at the liquid surface of the reactor is low and affects the pre-removal of nitrate. Utility Model Content

[0005] The utility model aims to provide a silver sulfate preparation reaction kettle with a nitrate removal function to solve the above technical problems.

[0006] In order to solve the above technical problems, the utility model provides a silver sulfate preparation reactor with a nitrate removal function, comprising:

[0007] A motor is arranged at the top of the reactor; and

[0008] A stirring shaft is located inside the reactor, and the top end of the stirring shaft is connected to the output end of the motor, and a pumping mechanism is provided on the stirring shaft; wherein

[0009] The pumping mechanism is suitable for extracting liquid at the liquid surface in the reaction kettle and pumping it to the bottom of the reaction kettle during the process of the motor driving the stirring shaft to rotate.

[0010] Further, the extraction mechanism comprises:

[0011] A driving gear sleeved on the outer wall of the stirring shaft; and

[0012] A driven gear meshing with the driving gear; wherein

[0013] One side of the driven gear is connected with a rotating disk via a short shaft;

[0014] A connecting rod, the top of which is connected to the turntable bearing, and the bottom bearing of which is connected to a moving component.

[0015] Further, the mobile component comprises:

[0016] A suction tube connected to the inner wall of the reactor; wherein

[0017] The inner wall of the pumping cylinder is slidably connected with a piston; and

[0018] A sliding rod has one end connected to the upper end surface of the piston member and the other end connected to the bottom bearing of the connecting rod.

[0019] Furthermore, a water inlet pipe is provided at the bottom of the pumping tube;

[0020] The top end of the water inlet pipe is located inside the pumping cylinder, and the bottom end is located below the liquid level in the reactor.

[0021] Furthermore, a drainage pipe is provided on one side of the drainage tube;

[0022] Both ends of the drain pipe pass through the inner wall of the reactor; and

[0023] One end of the drainage pipe is connected to the outer wall of the drainage cylinder, and the other end is located at the bottom of the reactor.

[0024] Furthermore, the connection between the water inlet pipe and the pumping cylinder is located below the piston member; and

[0025] The connection between the drainage pipe and the drainage cylinder is located below the piston member.

[0026] Furthermore, a plurality of stirring paddles are staggeredly arranged on the outer wall of one end of the stirring shaft located in the liquid surface.

[0027] Furthermore, a heater is provided at the bottom of the reactor.

[0028] Furthermore, one-way valves are provided in both the water inlet pipe and the drain pipe.

[0029] The beneficial effect of the utility model is that, by providing a pumping mechanism, during the process of the stirring shaft rotating to stir the liquid and the silver nitrate therein, the liquid near the liquid surface and the silver nitrate at the liquid surface are extracted and pumped into the bottom of the liquid to realize circulation, thereby making the silver nitrate always at the bottom of the reactor so that the liquid around the silver nitrate is always in a high temperature state, and the nitrate radical is removed by high-temperature stirring.

[0030] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 It is a three-dimensional diagram of the utility model;

[0034] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0035] Figure 3 The utility model Figure 2 A schematic diagram of the enlarged structure of part A.

[0036] In the figure:

[0037] 1. Reactor; 10. Discharge port; 11. Feed port

[0038] 2. Motor; 20. Stirring shaft; 21. Stirring paddle;

[0039] 3. Pumping and exhaust mechanism; 30. Driving gear; 31. Driven gear; 32. Turntable; 33. Connecting rod; 34. Pumping and exhaust cylinder; 341. Water inlet pipe; 342. Drain pipe; 35. Sliding rod; 36. Piston. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] In the traditional preparation of silver sulfate, nitrate is difficult to wash out. Nitrate is eliminated by high temperature and appropriate use of concentrated sulfuric acid. Sulfuric acid is reacted with silver nitrate, and the generated silver sulfate is dissolved in excess sulfuric acid. Since the boiling point of sulfuric acid is higher than that of nitric acid, the purpose of removing nitrate and refining silver sulfate is achieved under stirring at high temperature. However, in the process of stirring sulfuric acid and silver nitrate, the liquid temperature at the liquid surface will be lower than the liquid temperature at the bottom of the reactor, and part of the silver nitrate will be suspended at the liquid surface during stirring. Since the temperature at the liquid surface is low, the removal of nitrate is affected.

[0042] By providing a pumping mechanism, during the process of the stirring shaft 20 rotating and stirring the liquid and the silver nitrate therein, the liquid near the liquid surface and the silver nitrate at the liquid surface are extracted and pumped into the bottom of the liquid to realize circulation, so that the silver nitrate is always at the bottom of the reactor 1 and the liquid around the silver nitrate is always in a high temperature state, and the nitrate radical is removed by high temperature stirring.

[0043] In some embodiments, a liquid (preferably sulfuric acid) and silver nitrate are introduced into the reactor 1 from the top, and then the motor 2 is started. The output end of the motor 2 drives the stirring shaft 20 to rotate, and the bottom of the stirring shaft 20 extends into the liquid surface and contacts the inner bottom surface of the reactor 1. A plurality of stirring paddles 21 are fixed on the outer wall of one end of the stirring shaft 20 located inside the liquid surface, and the stirring paddles 21 are staggered. Then, during the rotation of the stirring shaft 20, the stirring paddles 21 are used to stir the silver nitrate and the high-temperature liquid, so that the silver nitrate is prepared into silver sulfate and the nitrate ion is removed using the high-temperature sulfuric acid.

[0044] In some embodiments, during the rotation of the stirring shaft 20, the driving gear 30 fixed on its outer wall is driven to rotate, and the driven gear 31 meshing with the driving gear 30 is driven to rotate. The driven gear 31 is connected to the turntable 32 by a short shaft, thereby driving the turntable 32 to rotate. A connecting column is fixed to the surface of the turntable 32 and the top of the sliding rod 35 respectively. The two ends of the connecting rod 33 are respectively mounted on the two connecting columns and connected to the bearings of the two connecting columns. Therefore, during the rotation of the turntable 32, the connecting rod 33 is used to drive the sliding rod 35 and the piston 36 fixed at the bottom of the sliding rod to perform reciprocating motion up and down inside the pumping cylinder 34.

[0045] In some embodiments, when the piston member 36 slides upward in the pumping tube 34, negative pressure is generated inside the pumping tube 34, and the one-way valve in the water inlet pipe is forced to open, and the low-temperature liquid at the liquid surface in the reactor 1 and the mixed silver nitrate are drawn into the pumping tube 34 through the water inlet pipe 341. When the piston member 36 slides downward in the pumping tube 34, the one-way valve on the drain pipe 342 opens, and the liquid in the pumping tube 34 and the silver nitrate enter the inner bottom surface of the reactor 1, that is, the bottom of the liquid, through the drain pipe. Since a heater is provided at the bottom of the reactor 1 to always heat the bottom of the reactor 1, the bottom liquid temperature of the reactor 1 is higher than the temperature of the liquid at the liquid surface. Therefore, as the liquid at the liquid surface and silver nitrate are continuously drawn and pumped into the bottom of the reactor 1, the temperature of the liquid surrounding the silver nitrate in the reactor is maintained.

[0046] In some embodiments, liquid and silver nitrate are introduced into the reactor 1 through the feed port 11 opened on the upper end surface of the reactor 1, and the liquid in the reactor is heated by a heater (the technical means for heating the reactor by the heater is the prior art and will not be repeated here). After the preparation of silver sulfate is completed, the nitrate ion in the silver sulfate is removed by the above-mentioned device, and after the work is completed, the material in the reactor 1 is discharged by the discharge port 10.

[0047] In some embodiments, the inner lining of the reactor is preferably a corrosion-resistant ceramic lining, and the above-mentioned devices are all made of corrosion-resistant and high-temperature resistant materials.

[0048] In some embodiments, negative pressure may be generated inside the reactor to facilitate the removal of nitrate.

[0049] In summary, by providing a pumping mechanism, in the process of the stirring shaft 20 rotating and stirring the liquid and the silver nitrate therein, the liquid near the liquid surface and the silver nitrate at the liquid surface are extracted and pumped into the bottom of the liquid to achieve circulation, so that the silver nitrate is always at the bottom of the reactor 1 so that the liquid around the silver nitrate is always in a high temperature state, and the nitrogen is removed by high-temperature stirring.

[0050] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0052] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A silver sulfate preparation reactor with nitrate removal function, characterized in that: include: A motor is arranged at the top of the reaction kettle; as well as A stirring shaft, which is located inside the reactor, and the top end of the stirring shaft is connected to the output end of the motor, and the stirring shaft is provided with a pumping mechanism; in The pumping mechanism is suitable for extracting liquid at the liquid surface in the reaction kettle and pumping it to the bottom of the reaction kettle during the process of the motor driving the stirring shaft to rotate.

2. The silver sulfate preparation reaction kettle with nitrate removal function as claimed in claim 1, characterized in that: The extraction mechanism comprises: A driving gear sleeved on the outer wall of the stirring shaft; and A driven gear meshing with the driving gear; wherein One side of the driven gear is connected with a rotating disk via a short shaft; A connecting rod, the top of which is connected to the turntable bearing, and the bottom bearing of which is connected to a moving component.

3. The silver sulfate preparation reaction kettle with nitrate removal function as claimed in claim 2, characterized in that: The mobile assembly comprises: A suction tube connected to the inner wall of the reactor; wherein The inner wall of the pumping cylinder is slidably connected with a piston; and A sliding rod has one end connected to the upper end surface of the piston member and the other end connected to the bottom bearing of the connecting rod.

4. The silver sulfate preparation reaction kettle with nitrate removal function as claimed in claim 3, characterized in that: A water inlet pipe is provided at the bottom of the pumping tube; The top end of the water inlet pipe is located inside the pumping cylinder, and the bottom end is located below the liquid level in the reactor.

5. The silver sulfate preparation reaction kettle with nitrate removal function as claimed in claim 4, characterized in that: A drainage pipe is provided on one side of the suction and drainage cylinder; Both ends of the drain pipe pass through the inner wall of the reactor; and One end of the drainage pipe is connected to the outer wall of the drainage cylinder, and the other end is located at the bottom of the reactor.

6. The silver sulfate preparation reaction kettle with nitrate removal function as claimed in claim 5, characterized in that: The connection between the water inlet pipe and the pumping cylinder is located below the piston member; and The connection between the drainage pipe and the drainage cylinder is located below the piston member.

7. The silver sulfate preparation reaction kettle with nitrate removal function as claimed in claim 6, characterized in that: A plurality of stirring paddles are staggeredly arranged on the outer wall of one end of the stirring shaft located in the liquid surface.

8. The silver sulfate preparation reaction kettle with nitrate removal function as claimed in claim 7, characterized in that: A heater is arranged at the bottom of the reactor.

9. The silver sulfate preparation reaction kettle with nitrate removal function as claimed in claim 8, characterized in that: One-way valves are arranged in the water inlet pipe and the drain pipe.

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