CN219324542U - Inorganic precipitate washing device - Google Patents
Inorganic precipitate washing device Download PDFInfo
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- CN219324542U CN219324542U CN202321073393.XU CN202321073393U CN219324542U CN 219324542 U CN219324542 U CN 219324542U CN 202321073393 U CN202321073393 U CN 202321073393U CN 219324542 U CN219324542 U CN 219324542U
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Abstract
The utility model relates to chemical reagent preparation equipment, in particular to an inorganic precipitate washing device for filtering and washing precipitates to remove impurity ions after inorganic compounds are prepared through precipitation reaction, which comprises a washing kettle, wherein the washing kettle is provided with a funnel-shaped bottom, the side edge of the funnel-shaped bottom is provided with a filtering sieve plate, the center of the funnel-shaped bottom is connected with a discharge valve, the filtering sieve plate is connected with a pump and an ion exchange device through a pipeline, and the ion exchange device is filled with corresponding ion exchange resin, so that a large amount of water can be saved, and the inorganic precipitate washing device for the washing process is simplified.
Description
Technical Field
The present utility model relates to a chemical reagent preparing apparatus, and more particularly, to an inorganic precipitate washing apparatus for filtering and washing a precipitate to remove impurity ions after preparing an inorganic compound through a precipitation reaction.
Background
In the preparation of insoluble inorganic compounds by precipitation reactions, especially in the production of high quality products, washing processes are often involved, which aim to thoroughly wash the impurity ions entrained or adsorbed on the product surface during the precipitation preparation process below the product quality requirements. In the usual industrial process, after solid-liquid separation, the mixture is stirred and washed, and the solid-liquid separation is performed again, and washing with pure water is repeated until the quality requirements are met. In the process, the water consumption for washing is very large, the water consumption can reach more than 100 times of the product quality, and the repeated washing and solid-liquid separation processes are also very tedious to operate.
Disclosure of Invention
The utility model aims to provide an inorganic precipitate washing device which can save a large amount of water and simplify the washing process.
The inorganic precipitate washing device comprises a washing kettle, wherein the washing kettle is provided with a funnel-shaped bottom, a filtering sieve plate is arranged on the side edge of the funnel-shaped bottom, the center of the funnel-shaped bottom is connected with a discharge valve, the filtering sieve plate is connected with a pump and an ion exchange device through a pipeline, and the ion exchange device is filled with corresponding ion exchange resin.
Preferably, the outer wall of the washing kettle is provided with a jacket, and the jacket is provided with a heat exchange medium inlet and a heat exchange medium outlet.
Preferably, the washing kettle is provided with a stirring device.
The utility model does not need to repeatedly discharge materials during washing the precipitate, can simultaneously carry out stirring washing and solid-liquid separation, has high efficiency, saves water and low labor intensity, is particularly suitable for products with various, small batch and high quality requirements, is particularly suitable for the production of certain reagents with extremely high impurity ion requirements, can also be used as a reaction vessel of inorganic precipitate, and completes the chemical reaction process of the inorganic precipitate in a washing kettle.
Drawings
Fig. 1 is a schematic diagram of the connection of the present novel device.
Reference numerals: 1-a washing kettle; 2-filtering the sieve plate; 3-jacket; 4-a heat exchange medium inlet; 5-a heat exchange medium outlet; 6, a discharge valve; 7-a pump; 8-a first ion exchange unit; 9-a second ion exchange device and 10-a stirring device.
Description of the embodiments
Fig. 1 shows the structure and connection of one embodiment of the inorganic precipitate washing apparatus of the present utility model. The washing kettle 1 is provided with a funnel-shaped bottom, a filtering sieve plate 2 is arranged on the side edge of the funnel-shaped bottom, a discharge valve 6 is connected to the center of the funnel-shaped bottom, the filtering sieve plate 2 is connected with a pump 7 and a second ion exchange device 9 and a first ion exchange device 8 through pipelines, and corresponding ion exchange resins are respectively filled in the first ion exchange device 8 and the second ion exchange device 9. The inorganic precipitate in the washing kettle 1 is washed after the washing water enters the washing kettle 1, the inorganic precipitate flows out from the filtering sieve plate 2 by the thrust of the pump 7, is conveyed to the second ion exchange device 9 and the first ion exchange device 8 for cation and anion ion exchange through the pipelines, and is recycled into the washing kettle 1, so that the washing water can be recycled, and impurity ions are removed through ion exchange, thereby saving a large amount of water. The ion exchange resin is reused by regeneration after a period of use.
The outer wall of the washing kettle 1 can be further provided with a jacket 3, the jacket 3 is provided with a heat exchange medium inlet 4 and a heat exchange medium outlet 5, materials in the washing kettle 1 are heated or cooled through an external heat exchange medium, sediment loss is reduced, washing time is saved, and washing efficiency is improved.
The stirring device 10 is arranged in the washing kettle 1 to stir and disperse the inorganic precipitate into water, which is favorable for rapidly dissolving impurity ions adsorbed on the inorganic precipitate into water and accelerating the washing process.
The ion exchange device can be additionally provided with one or more ion exchange resins according to the actual process, and the ion exchange resins and the cation exchange resins are respectively filled according to the actual needs or the combination of the ion exchange resins and the cation exchange resins.
The water saving effect of the present utility model will be described below by taking the preparation of high purity manganese carbonate as an example.
The raw materials are manganese chloride and ammonium bicarbonate which react to generate precipitate, and the reaction equation is as follows:
MnCl 2 ·4H 2 O+2NH 4 HCO 3 =2NH 4 Cl+MnCO 3 ↓+5H 2 O+CO 2 ↑
the production process is as follows:
the adopted washing kettle 1 has the specification of 1000 liters, the diameters of the first ion exchange device 8 and the second ion exchange device 9 are respectively 25 cm and the heights are 2 meters, and the pretreated H is respectively filled in the washing kettle + Cationic resins and OH - And (3) a type of anionic resin.
About 100 kg of product is produced according to the stoichiometric amount, and after the chemical reaction is finished by external equipment, mother liquor is separated first and then is primarily washed once.
The materials after preliminary washing are sent into a washing kettle 1, 500 liters of pure water is gradually added into the washing kettle 1, a pump 7 is started for water circulation, washing water sequentially passes through a filtering sieve plate 2, the pump 7, a second ion exchange device 9 and a first ion exchange device 8 and then enters the washing kettle 1 for circulation, the circulation is carried out for 20 times within 3 hours, and small samples are taken midway for central control detection. And after the cyclic washing is finished, discharging the materials from a discharge hole, removing centrifugal spin drying, and drying. And formally checking.
The product detection result and the corresponding index are as follows (chloride is tested by turbidimetry):
the total water consumption for washing is 500 liters, which is 5 times of the weight of the product, no unmanned operation is needed in the whole washing process, and the labor intensity is very low.
Control experiment
About 100 g of the initially washed precipitate was taken, washed with stirring in a beaker, filtered and repeatedly operated. And the water consumption is about 200 milliliters each time, sampling and inspection are carried out when the water consumption is increased by 1 liter each time, and the chloride index can meet the standard requirement only after the water consumption reaches 11 liters. The results show that the total water usage for washing is 110 times the weight of the product.
Claims (3)
1. The inorganic precipitate washing device is characterized by comprising a washing kettle, wherein the washing kettle is provided with a funnel-shaped bottom, a filtering sieve plate is arranged on the side edge of the funnel-shaped bottom, the center of the funnel-shaped bottom is connected with a discharge valve, the filtering sieve plate is connected with a pump and an ion exchange device through a pipeline, and the ion exchange device is filled with corresponding ion exchange resin.
2. The inorganic precipitate washing device according to claim 1, wherein the outer wall of the washing kettle is provided with a jacket, and the jacket is provided with a heat exchange medium inlet and a heat exchange medium outlet.
3. The inorganic precipitate washing device according to claim 1 or 2, wherein a stirring device is provided in the washing tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321073393.XU CN219324542U (en) | 2023-05-08 | 2023-05-08 | Inorganic precipitate washing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321073393.XU CN219324542U (en) | 2023-05-08 | 2023-05-08 | Inorganic precipitate washing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219324542U true CN219324542U (en) | 2023-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321073393.XU Active CN219324542U (en) | 2023-05-08 | 2023-05-08 | Inorganic precipitate washing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219324542U (en) |
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2023
- 2023-05-08 CN CN202321073393.XU patent/CN219324542U/en active Active
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