Ammonium bicarbonate solution clarifying device

Abstract

The utility model discloses an ammonium bicarbonate solution clarifying device which comprises a clarifying tank and a deslagging unit, a discharging pipeline is arranged at the lower part of the clarifying tank, the discharging pipeline is provided with two branch pipelines, and one branch pipeline is connected with a filtering unit through a first hand valve; the other branch pipeline is connected with the deslagging unit through a second hand valve; the slag discharging unit comprises a slag liquid standing tank, and a feeding pump is arranged at the front end of the slag liquid standing tank and used for transferring materials in the clarifying tank into the slag liquid standing tank for standing and settling; a discharge pump is arranged at the rear end of the slag liquid standing tank and is used for transferring supernatant liquid after standing in the slag liquid standing tank back to the clarifying tank; and the slag liquid standing tank, the feeding pump and the discharging pump are sequentially connected through pipelines. By adopting the device, the blockage of the filter at the rear end of the clarifying tank is reduced, the service lives of the filter element and the filter cloth are prolonged, the backwashing frequency of the filter is reduced, and the production progress is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of cobalt powder preparation, in particular to a slag discharge device for ammonium bicarbonate clarified liquid. Background Art

[0002] Cobalt powder has extremely important applications in the fields of cemented carbide, catalysts, electronic devices, special tools, magnetic materials, batteries, hydrogen storage alloy electrodes and special coatings. In the preparation of cobalt powder, ammonium bicarbonate solution is one of the intermediate raw materials for generating cobalt powder, and its preparation process is also particularly critical.

[0003] The preparation process of ammonium bicarbonate solution includes: 1. dissolving the ammonium bicarbonate raw material in a liquid preparation tank; 2. the dissolved liquid enters a separation tank for oil phase separation, and the water phase is retained in the separation tank; 3. the solution after water-oil separation enters a clarification tank for clarification, and the clarified liquid enters a filtration unit for primary filtration and secondary filtration to obtain an ammonium bicarbonate solution that meets the requirements.

[0004] Since the ammonium bicarbonate raw material contains impurities, the impurities are also brought into the dissolving liquid during the dissolution process of ammonium bicarbonate. The existing clarification tank itself does not have a filtering function. The pressure of filtering impurities accumulates on the filter at the rear end of the clarification tank, causing the rear end filter to be blocked, the service life of the filter element and filter cloth is reduced, and the frequency of backwashing the filter is greatly increased, thereby affecting the production progress. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an ammonium bicarbonate solution clarification device, including a clarification tank and a slag discharge unit, a discharge pipe is provided at the lower part of the clarification tank, and the discharge pipe is divided into two branch pipes, one branch pipe is connected to the filter unit through a first hand valve; the other branch pipe is connected to the slag discharge unit through a second hand valve;

[0006] The slag discharge unit includes a slag liquid standing tank, a feed pump is arranged at the front end of the slag liquid standing tank, which is used to transfer the material in the clarification tank to the slag liquid standing tank for standing and settling; a discharge pump is arranged at the rear end of the slag liquid standing tank, which is used to transfer the upper clear liquid in the slag liquid standing tank back to the clarification tank after standing; the slag liquid standing tank, the feed pump and the discharge pump are connected in sequence by pipelines.

[0007] Furthermore, all pipes are made of PPH material.

[0008] PPH pipes have good corrosion resistance and insulation properties.

[0009] Furthermore, the bottom of the slag liquid standing tank is conical, and a slag discharge valve is provided at the lower end of the bottom.

[0010] The slag liquid standing tank with a conical bottom has a better standing effect; a slag discharge valve is provided at the lower end of the bottom to discharge the slag liquid after standing.

[0011] Furthermore, a filter plate is provided in the slag-liquid standing tank, which separates the tank body into a first chamber and a second chamber, and the bottom of the first chamber is located above the conical bottom; the first chamber and the second chamber are connected through filter holes opened on the filter plate; the discharge port of the slag-liquid standing tank is set in the first chamber, and the feed port of the slag-liquid standing tank is set in the second chamber.

[0012] The filter plate can filter out the light impurities remaining in the upper clear liquid and improve the clarification effect. The bottom of the first chamber is located above the conical bottom, which can separate the upper clear liquid from the impurities in the lower layer, making it convenient to extract the upper clear liquid.

[0013] Furthermore, the body of the slag liquid standing tank is made of transparent material.

[0014] The transparent tank body is used to observe the height of the static slag liquid. When it is judged by the height of the slag liquid that the material does not need to be filtered further, the first hand valve is opened, the second hand valve is closed, and the material is discharged to the filter.

[0015] Furthermore, the feed pump is a diaphragm pump with a working flow rate of 30-40 L / min.

[0016] The diaphragm pump has the advantages of corrosion resistance and wear resistance, and is suitable for the transportation of ammonium bicarbonate solution. The working flow rate is set at 30-40L / min because the slag liquid has poor fluidity. At this flow rate, the material can be stably transported to the slag liquid standing tank.

[0017] Furthermore, the discharge pump is a centrifugal pump with a working flow rate of 1.1m³ / h.

[0018] A centrifugal pump is set up to facilitate the transfer of the clear liquid on the upper layer of the static tank. The working flow rate is set to 1.1m³ / h, which can ensure that the upper clear liquid is normally transferred out of the static tank.

[0019] Furthermore, a pressure gauge is provided at the rear side of the first hand valve.

[0020] A pressure gauge is set up to observe the pressure of the material entering the filter. When the pressure reaches 300Pa, the material needs to be discharged. The first hand valve needs to be closed and the second hand valve needs to be opened to pass the material to the discharge process unit.

[0021] Beneficial effects of the utility model:

[0022] The present application adopts a slag-liquid standing tank, which can transfer the ammonium bicarbonate solution in the clarification tank to the slag-liquid standing tank for sedimentation separation, and the separated supernatant is transported back to the clarification tank through the discharge pump. The use of the above device can reduce the clogging of the filter at the rear end of the clarification tank, increase the service life of the filter element and filter cloth, and reduce the frequency of backwashing the filter, thereby ensuring production progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the clarifier tank slag discharge device.

[0024] Description of reference numerals:

[0025] 1-clarification tank; 2-slag liquid standing tank; 3-feed pump; 4-discharge pump; 5-slag discharge valve; 6-discharge pipe; 7-first hand valve; 8-second hand valve; 9-pressure gauge; 10-filter plate. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages 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 and a preferred implementation manner.

[0027] The clarification tank slag discharge device of the present application is further described below in conjunction with the accompanying drawings.

[0028] See also Figure 1 The present application provides an ammonium bicarbonate solution clarification device, comprising: a clarification tank 1 and a slag discharge unit, a discharge pipe 6 is provided at the lower part of the clarification tank 1, and the discharge pipe 6 is divided into two branch pipes, one branch pipe is connected to the filter unit via a first hand valve 7; the other branch pipe is connected to the slag discharge unit via a second hand valve 8;

[0029] The slag discharge unit includes a slag liquid standing tank 2, a feed pump 3 is arranged at the front end of the slag liquid standing tank 2, which is used to transfer the material to be filtered in the clarification tank 1 to the slag liquid standing tank 2 for standing; a discharge pump 4 is arranged at the rear end of the slag liquid standing tank 2, which is used to transfer the upper clear liquid in the slag liquid standing tank 2 after standing back to the clarification tank 1; the slag liquid standing tank 2, the feed pump 3 and the discharge pump 4 are connected in sequence by pipelines.

[0030] The first hand valve 7 and the second hand valve 8 are respectively arranged on the two branch pipes to switch the material flow direction, thereby ensuring that the material discharged from the clarification tank 1 to the filter unit meets the process requirements.

[0031] The pipes involved in this embodiment are all made of PPH material. This is because the pipes made of PPH material have good corrosion resistance and insulation performance and are more suitable for this process.

[0032] In this embodiment, a diaphragm pump is used as the feed pump because it has the advantages of corrosion resistance and wear resistance and is more suitable for material transportation; the working flow rate is set to 30-40L / min because the slag liquid has poor fluidity. Using this flow rate, the material can be stably transported to the slag liquid standing tank.

[0033] A centrifugal pump is used as the discharge pump to facilitate the transfer of the clear liquid on the upper layer of the static tank; the working flow rate is set to 1.1m³ / h, which can ensure that the upper clear liquid can be normally transferred out of the static tank.

[0034] The bottom of the slag liquid standing tank 2 is conical, and a slag discharge valve 5 is provided at the bottom; the slag liquid standing tank with a conical bottom has a better standing effect, and the slag discharge valve is configured to more conveniently discharge the slag liquid after standing.

[0035] A filter plate 10 is provided inside the slag-liquid standing tank 2, and the filter plate 10 divides the tank body into a first chamber and a second chamber, and the bottom of the first chamber is located above the conical bottom; the first chamber and the second chamber are connected through the filter holes opened on the filter plate 10; the discharge port of the slag-liquid standing tank 2 is set in the first chamber, and the feed port of the slag-liquid standing tank 2 is set in the second chamber; the filter plate 10 can separate the upper clear liquid from the lower impurities, and further filter the impurities remaining in the upper clear liquid, so as to improve the standing effect of the standing tank; in this embodiment, the pore size of the filter plate is slightly larger than the pore size of the filter in the filter unit to achieve the effect of pre-filtration.

[0036] The body of the slag liquid settling tank 2 is made of transparent material, which is convenient for observing the height of the slag liquid settled in the conical part of the settling tank, so as to judge whether the material needs to be further filtered.

[0037] A pressure gauge 9 is arranged behind the first hand valve 7 to monitor the pressure of the material entering the filter, so as to determine whether the material flow direction needs to be switched.

[0038] The specific operation of this device is as follows:

[0039] During the dissolution of ammonium bicarbonate raw material, first open the first hand valve 7 and close the second hand valve 8 to allow the material to enter the filtration unit normally. When the value of the pressure gauge 9 jumps to 300Pa, close the first hand valve 7 and open the second hand valve 8 leading to the slag discharge unit, thus completing the solution flow switching.

[0040] The slag liquid at the bottom of the clarification tank 1 is transferred to the slag liquid static tank 2 for static sedimentation by the feed pump 3. The normal working flow rate of the feed pump 3 is controlled at 30-40L / min. Here, a pneumatic diaphragm pump is preferably used as the feed pump.

[0041] After standing for 24 hours, the material can achieve solid-liquid separation in the slag liquid standing tank 2; start the discharge pump 4 to transfer the upper clear liquid in the slag liquid standing tank 2 back to the clarification tank 1 for recycling. Here, a centrifugal pump is preferably used as the discharge pump, and the working flow rate is controlled at 1.1m³ / h.

[0042] When the height of the slag liquid at the bottom of the slag liquid settling tank 2 is half the height of the conical part of the settling tank, the first hand valve 7 is opened, and the second hand valve 8 is closed to allow the material to pass to the filtering unit.

[0043] After the process is completed, the slag discharge valve 5 is opened to clean the slag liquid at the bottom of the slag liquid standing tank 2.

[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention, and these improvements and modifications are also within the protection scope of the present invention.

Claims

1. An ammonium bicarbonate solution clarification device, characterized in that: It comprises a clarification tank (1) and a slag discharge unit, wherein a discharge pipe (6) is provided at the lower part of the clarification tank (1), and the discharge pipe (6) is provided with two branch pipes, one branch pipe is connected to the filter unit via a first hand valve (7), and the other branch pipe is connected to the slag discharge unit via a second hand valve (8); The slag discharge unit comprises a slag liquid standing tank (2), a feed pump (3) being arranged at the front end of the slag liquid standing tank (2) for transferring materials in the clarification tank (1) to the slag liquid standing tank (2) for standing and settling; a discharge pump (4) being arranged at the rear end of the slag liquid standing tank (2) for transferring the upper clear liquid in the slag liquid standing tank (2) back to the clarification tank (1); the slag liquid standing tank (2), the feed pump (3) and the discharge pump (4) are connected in sequence through pipelines.

2. The device according to claim 1, characterized in that All pipes are made of PPH material.

3. The device according to claim 1, characterized in that The bottom of the slag liquid standing tank (2) is conical, and a slag discharge valve (5) is provided at the lower end of the bottom.

4. The device according to claim 3, characterized in that A filter plate (10) is provided in the slag-liquid standing tank (2), and the filter plate (10) divides the tank body into a first chamber and a second chamber, wherein the bottom of the first chamber is located above the conical bottom; the first chamber and the second chamber are connected via filter holes provided on the filter plate (10); the discharge port of the slag-liquid standing tank (2) is connected to the first chamber, and the feed port of the slag-liquid standing tank (2) is connected to the second chamber.

5. The device according to claim 1, characterized in that The body of the slag liquid standing tank (2) is made of a transparent material.

6. The device according to claim 1, characterized in that The feed pump (3) is a diaphragm pump.

7. The device according to claim 1, characterized in that The discharge pump (4) is a centrifugal pump.

8. The device according to claim 1, characterized in that A pressure gauge (9) is provided on the rear side of the first hand valve (7).

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