An evaporation and concentration apparatus for preparing inorganic salts

Abstract

This utility model discloses an evaporation and concentration device for preparing inorganic salts, including a reaction vessel, a stirring device, spiral evaporation blades, a rotary evaporator, a circulation pipe, a circulation pump, and a heat exchanger. The stirring device is disposed inside the reaction vessel, and the rotary evaporator is connected to the stirring device. The spiral evaporation blades are connected to the inner wall of the reaction vessel and cooperate with the rotary evaporator. The two ends of the circulation pipe are connected to the bottom of the reaction vessel and the rotary evaporator, respectively. The circulation pump and the heat exchanger are connected to the circulation pipe. This evaporation and concentration device for preparing inorganic salts has a simple structure and is convenient and practical. The reaction liquid is introduced into the annular overflow channel of the rotary evaporator through the circulation pipe, so that the reaction liquid overflows into the annular disk and spreads quickly, thereby increasing the heat dissipation surface and improving the concentration speed.

Description

Technical Field

[0001] This utility model belongs to the field of evaporation and concentration technology, specifically relating to an evaporation and concentration device for preparing inorganic salts. Background Technology

[0002] Inorganic salt zinc is a mineral nutrient found in the body and food. Most inorganic salts in cells exist in ionic form and are composed of a combination of organic and inorganic substances. Nickel nitrate, as a type of inorganic salt, undergoes an oxidation reaction before production. This oxidation-reduction reaction is carried out using a mixture of 40% nitric acid, metal oxides, and nitrogen oxides, followed by evaporation and concentration to produce nitrate crystals. Traditional evaporation crystallization relies entirely on heating the reaction vessel to accelerate concentration, which is not only inefficient but also energy-intensive. To accelerate evaporation, the reaction vessel is modified by using a circulating pump to spray the reaction liquid to speed up the evaporation of the evaporants (nitric acid and water). Although this method increases the evaporation rate, the small evaporation area limits the evaporation speed. Therefore, we provide an evaporation and concentration device for inorganic salt preparation to solve the above-mentioned technical problems. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide an evaporation and concentration device for the preparation of inorganic salts. It has a simple structure and is convenient and practical. The reaction liquid is introduced into the annular overflow channel of the rotary evaporator through the circulation pipe, so that the reaction liquid overflows into the annular disk and spreads out quickly, thereby increasing the heat dissipation surface and improving the concentration speed.

[0004] An evaporation and concentration apparatus for preparing inorganic salts includes a reaction vessel, a stirring device, spiral evaporation blades, a rotary evaporator, a circulation pipe, a circulation pump, and a heat exchanger. The stirring device is disposed inside the reaction vessel, and the rotary evaporator is connected to the stirring device. The spiral evaporation blades are connected to the inner wall of the reaction vessel and cooperate with the rotary evaporator. The two ends of the circulation pipe are connected to the bottom of the reaction vessel and the rotary evaporator, respectively. The circulation pump and the heat exchanger are connected to the circulation pipe. The rotary evaporator includes a fixed frame, an annular disk, guide vane holes, and an annular overflow channel. The annular disk is connected to the stirring device through the fixed frame. Several guide vane holes are connected to the annular disk. The annular overflow channel is connected to the inner wall of the reaction vessel and communicates with the circulation pipe. Several liquid guiding holes are opened at the bottom of the annular overflow channel.

[0005] Preferably, the annular overflow channel has an overflow rolled edge bent on the side near the annular disc.

[0006] Preferably, the guide vane hole is provided with a dispersing vane.

[0007] Preferably, the dispersion leaf has a plurality of holes.

[0008] Preferably, the annular overflow channel is provided with an annular outlet pipe that communicates with the circulation pipe, and the lower side of the annular outlet pipe has a plurality of outlet holes. Beneficial effects

[0009] (1) The present invention provides an evaporation and concentration device for preparing inorganic salts. It has a simple structure and is convenient and practical. The reaction liquid is introduced into the annular overflow channel of the rotary evaporator through the circulation pipe, so that the reaction liquid overflows into the annular disk and spreads out quickly, thereby increasing the heat dissipation surface and improving the concentration speed.

[0010] (2) An evaporation and concentration device for preparing inorganic salts according to this utility model, the reaction liquid flows out through the liquid guide hole on the annular overflow channel, and after the reaction liquid flows out, it falls onto the spiral evaporation blades, so that the reaction liquid flows along the spiral evaporation blades, thereby extending the flow distance of the reaction liquid and increasing the concentration speed. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of an evaporation and concentration device;

[0012] Figure 2 This is a schematic diagram of a rotary evaporator.

[0013] 1-Reaction vessel, 2-Stirring device, 3-Spiral evaporator blade, 4-Rotary evaporator, 41-Fixed frame, 42-Annular disc, 43-Guide vane hole, 44-Dispersion blade, 45-Annular overflow channel, 56-Overflow rolled edge, 5-Circulation pipe, 6-Circulation pump, 7-Heat exchanger. Detailed Implementation

[0014] The embodiments of this utility model are further described below with reference to the accompanying drawings. Example 1

[0015] like Figures 1 to 2As shown; an evaporation and concentration apparatus for preparing inorganic salts includes a reaction vessel 1, a stirring device 2, spiral evaporation blades 3, a rotary evaporator 4, a circulation pipe 5, a circulation pump 6, and a heat exchanger 7. The stirring device 2 is disposed inside the reaction vessel 1, and the rotary evaporator 4 is connected to the stirring device 2. The spiral evaporation blades 3 are connected to the inner wall of the reaction vessel 1 and cooperate with the rotary evaporator 4. The two ends of the circulation pipe 5 are respectively connected to the bottom of the reaction vessel 1 and the rotary evaporator 4. The circulation pump 6 and the heat exchanger 7 are connected to the circulation pipe 5. The rotary evaporator 4 includes a fixing frame 41, an annular disk 42, guide vane holes 43, and a ring. The annular overflow channel 45 is connected to the stirring device 2 via a fixing frame 41. Several guide vane holes 43 are connected to the annular disk 42. The annular overflow channel 45 is connected to the inner wall of the reactor 1 and communicates with the circulation pipe 5. Several liquid guiding holes are opened at the bottom of the annular overflow channel 45. The side of the annular overflow channel 45 near the annular disk 42 is bent with an overflow rolled edge 56. Dispersing blades 44 are provided on the guide vane holes 43. Several holes are opened on the dispersing blades 44. An annular liquid outlet pipe communicating with the circulation pipe 5 is provided in the annular overflow channel 45. Several liquid outlet holes are opened on the lower side of the annular liquid outlet pipe.

[0016] The reactor 1 is used for the oxidation and concentration of nickel nitrate, the stirring device 2 is used for stirring the nickel nitrate reaction solution, and the heat exchanger 7 reheats the circulating reaction solution. The reactor 1, stirring device 2, and heat exchanger 7 are existing technologies and will not be described in detail again. The reaction solution is transported into the annular outlet pipe by the circulation pump 6 through the circulation pipe 5, and then introduced into the annular overflow channel 45 through the outlet hole of the annular outlet pipe. At this time, the reaction solution falls into the spiral evaporation blade 3 through the outlet hole, and the spiral evaporation blade 3 extends the flow distance of the reaction solution and extends the evaporation distance. As the reaction solution in the annular overflow channel 45 increases, it overflows. The overflowing reaction solution flows into the annular disk 42 through the overflow edge 56. The annular disk 42 spreads the reaction solution, and then the reaction solution is discharged through the guide vane hole 43. During the discharge, the reaction solution is discharged and dispersed by the dispersion blade 44. The reaction solution is formed into droplets through the holes on the dispersion blade 44, which is mainly caused by the rotating annular disk 42.

[0017] The specific embodiments of this utility model have been described in detail above, but they are merely examples, and this utility model is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions to this utility model are also within the scope of this utility model. Therefore, all equivalent changes and modifications made without departing from the spirit and scope of this utility model are covered within the scope of this utility model.

Claims

1. An evaporation and concentration apparatus for preparing inorganic salts, characterized in that: The reactor includes a reaction vessel (1), a stirring device (2), spiral evaporation blades (3), a rotary evaporator (4), a circulation pipe (5), a circulation pump (6), and a heat exchanger (7). The stirring device (2) is located inside the reaction vessel (1), and the rotary evaporator (4) is connected to the stirring device (2). The spiral evaporation blades (3) are connected to the inner wall of the reaction vessel (1) and cooperate with the rotary evaporator (4). The two ends of the circulation pipe (5) are connected to the bottom of the reaction vessel (1) and the rotary evaporator (4), respectively. The circulation pump (6) 6) and heat exchanger (7) are connected to circulation pipe (5); the rotary evaporator (4) includes a fixed frame (41), an annular disk (42), guide vane holes (43) and an annular overflow channel (45). The annular disk (42) is connected to the stirring device (2) through the fixed frame (41). Several guide vane holes (43) are connected to the annular disk (42). The annular overflow channel (45) is connected to the inner wall of the reactor (1) and communicates with circulation pipe (5). Several liquid guiding holes are opened at the bottom of the annular overflow channel (45).

2. The evaporation and concentration apparatus for preparing inorganic salts as described in claim 1, characterized in that: The annular overflow channel (45) has an overflow flange (56) bent on the side near the annular disk (42).

3. The evaporation and concentration apparatus for preparing inorganic salts as described in claim 2, characterized in that: The guide leaf hole (43) is provided with a dispersing leaf (44).

4. The evaporation and concentration apparatus for preparing inorganic salts as described in claim 3, characterized in that: The dispersion leaf (44) has several holes.

5. The evaporation and concentration apparatus for preparing inorganic salts as described in claim 4, characterized in that: The annular overflow channel (45) is provided with an annular liquid outlet pipe that communicates with the circulation pipe (5), and the lower side of the annular liquid outlet pipe is provided with several liquid outlet holes.

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