Particle material fluidization pickling device with defoaming function

Abstract

The utility model relates to a particle material fluidization pickling device with a defoaming function, which comprises a pickling tank, an acid inlet is arranged at the bottom of the pickling tank, and an overflow port is arranged on the side wall of the top of the pickling tank; an overflow port is formed in the acid pickling tank and is communicated with the grit chamber through an overflow pipe, a foam suction pipe is arranged above the overflow port in the acid pickling tank, a plurality of suction holes are formed in the pipe wall of the foam suction pipe, the foam suction pipe is communicated with a vacuum filtering tank through a pipeline, and the vacuum filtering tank is sequentially connected with an acid mist absorption tower and a fan through pipelines. The device has the beneficial effects that by additionally arranging the foam suction pipe, the vacuum filtering tank, the acid mist absorption tower and the fan, foam can be sucked into the vacuum filtering tank for treatment in a negative pressure suction mode, so that the foam generated in the pickling process is eliminated, and normal pickling operation is prevented from being influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical engineering, in particular to a fluidized acid washing device for granular materials with a foam removal function. Background Art

[0002] Non-metallic mineral granular materials are generally prepared by wet method in the preparation process. The purpose is to reduce the dust pollution generated in the preparation process. In addition, it is convenient to remove the iron brought in during the preparation of granular materials as much as possible through wet magnetic separation. After the granular materials are prepared, their specific surface area increases, the surface energy is large, and the adsorption capacity is also increased. The particle surface has a strong ability to adsorb impurities - the adsorbed impurities include not only liquids and solids but also gases. Therefore, during the fluidized acid purification process, the granular materials have many pores when they enter the pickling tank and accumulate. There will be a lot of air between the pores. Therefore, after the acid enters the bottom of the pickling tank, it slowly rises. During the rising process, the air is slowly driven out, thus forming a lot of foam. If the foam cannot be effectively removed, it will cause inconvenience to the normal operation of the pickling process. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a fluidized acid washing device for granular materials with a foam removal function, so as to overcome the deficiencies in the above-mentioned prior art.

[0004] The utility model solves the above-mentioned technical problem with the following technical solution: a fluidized pickling device for particulate materials with a foam removal function, comprising: a pickling tank, an acid inlet is provided at the bottom of the pickling tank, an overflow port is provided on the top side wall of the pickling tank; the overflow port is connected to a grit chamber via an overflow pipe, a foam suction pipe is provided above the overflow port in the pickling tank, a plurality of suction holes are provided on the pipe wall of the foam suction pipe, the foam suction pipe is connected to a vacuum filter tank via a pipeline, and the vacuum filter tank is connected to an acid mist absorption tower and a fan in sequence via a pipeline.

[0005] On the basis of the above technical solution, the present invention can also be improved as follows.

[0006] Furthermore, a filter cloth is placed on the foam suction pipe at the suction hole.

[0007] Furthermore, the foam suction pipe comprises: a main suction pipe and a plurality of branch suction pipes connected to the main suction pipe, a plurality of suction holes are provided on the pipe wall of the branch suction pipe, and the main suction pipe is connected to the vacuum filter tank via a pipeline.

[0008] Furthermore, the main suction pipe is connected to at least two vacuum filter tanks via a pipeline, and each vacuum filter tank is connected to the acid mist absorption tower and the fan in sequence via a pipeline.

[0009] Furthermore, a valve is provided at the inlet of the vacuum filter tank, a valve is provided at the outlet of the vacuum filter tank, the main suction pipe is connected to the valve at the inlet of the vacuum filter tank via a pipeline, and the valve at the outlet of the vacuum filter tank is connected to the vacuum suction equipment via a pipeline.

[0010] Furthermore, the acid inlet is connected in series with a heater, an acid-resistant pump and an acid storage container via an acid liquid delivery pipe.

[0011] Furthermore, a valve is provided on the acid delivery pipe between the acid-resistant pump and the heater.

[0012] Further, the heater is a heat exchanger.

[0013] Furthermore, a valve is provided on the acid delivery pipe between the acid storage container and the acid-resistant pump.

[0014] Furthermore, the sand settling tank is connected to the acid-resistant pump through a reflux pipe, and a valve is provided on the reflux pipe.

[0015] Furthermore, the foam suction pipe and / or suction holes are symmetrically distributed along the diameter direction of the top cross section of the pickling tank. For example, the foam suction pipe includes a main suction pipe and a plurality of branch suction pipes connected to the main suction pipe and perpendicular to the main suction pipe, and a plurality of suction holes are evenly arranged at the bottom of the pipe wall of the branch suction pipe.

[0016] Alternatively, the foam suction pipe and / or the suction hole are arranged around the overflow port, for example, the foam suction pipe is in an arc shape surrounding the overflow port, and a plurality of suction holes are evenly arranged at the bottom of the pipe wall of the foam suction pipe.

[0017] Furthermore, the suction port of the foam suction pipe is 5 to 50 mm higher than the overflow port of the pickling tank, and the height can be adjusted according to the amount of foam and the suction strength of the vacuum suction equipment.

[0018] The beneficial effects of the utility model are:

[0019] The non-metallic mineral granular materials to be pickled and purified are put into the pickling tank through the feeding port, and the amount added depends on the actual situation;

[0020] After the feeding is completed, the acid-resistant pump is started, and the acid in the acid storage container is sent to the heater through the acid-resistant pump, and then sent to the pickling tank after being heated by the heater;

[0021] When the acid liquid rises to the overflow port of the pickling tank, the fan is turned on, and a negative pressure environment is formed in the vacuum filter tank and the acid mist absorption tower, so that the foam enters the foam suction pipe through the suction hole on the foam suction pipe, and then enters the vacuum filter tank through the pipeline. The foam is filtered in the vacuum filter tank, and the airflow after filtration enters the acid mist absorption tower, which absorbs the acid mist in the airflow. The fan can be turned off after the foam in the pickling tank is completely eliminated;

[0022] By adding a foam suction pipe, a vacuum filter tank, an acid mist absorption tower and a fan, the foam can be sucked into the vacuum filter tank for treatment by using negative pressure, thereby eliminating the foam generated during the pickling process to avoid affecting the normal operation of the pickling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of the fluidized acid washing device for granular materials with a defoaming function in the utility model;

[0024] Figure 2 It is a partial structural diagram of the fluidized acid washing device for granular materials with the defoaming function in the utility model.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1. Pickling tank, 2. Acid delivery pipe, 3. Heater, 4. Acid-resistant pump, 5. Acid storage container, 6. Overflow pipe, 7. Grit chamber, 8. Foam suction pipe, 810, Main suction pipe, 820, Branch suction pipe, 821, Suction hole, 9. Vacuum filter tank, 10. Acid mist absorption tower, 11. Fan, 12. Reflux pipe. DETAILED DESCRIPTION

[0027] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0028] Example 1

[0029] like Figure 1 As shown, a fluidized pickling device for particulate materials with a defoaming function comprises: a pickling tank 1, an acid inlet of the pickling tank 1 is connected in series with a heater 3, an acid-resistant pump 4 and an acid storage container 5 through an acid liquid conveying pipe 2, the acid-resistant pump 4 is started, and the acid liquid in the acid storage container 5 is sent into the heater 3 through the acid-resistant pump 4, and then sent into the pickling tank 1 after being heated by the heater 3.

[0030] An overflow port is provided on the top side wall of the pickling tank 1 , and the overflow port of the pickling tank 1 is connected to the grit tank 7 via an overflow pipe 6 , so that the overflow solution in the pickling tank 1 can enter the grit tank 7 via the overflow pipe 6 .

[0031] A foam suction pipe 8 is provided above the overflow port of the pickling tank 1, and a plurality of suction holes 821 are provided on the wall of the foam suction pipe 8. The foam suction pipe 8 is connected to the vacuum filter tank 9 via a pipeline, and the vacuum filter tank 9 is connected to the acid mist absorption tower 10 and the fan 11 in sequence via a pipeline; the height of the foam suction pipe 8 from the liquid level in the pickling tank 1 allows the foam to be smoothly sucked into the suction holes, and as little acid as possible is brought in.

[0032] The workflow is as follows:

[0033] The non-metallic mineral granular material to be pickled and purified is put into the pickling tank 1, and the amount added is determined according to the actual situation.

[0034] After the feeding is completed, the acid-resistant pump 4 is started, and the acid solution in the acid storage container 5 is sent to the heater 3 through the acid-resistant pump 4, and then sent to the pickling tank 1 after being heated by the heater 3.

[0035] When the acid liquid rises to the overflow port of the pickling tank 1, the fan 11 is turned on, and a negative pressure environment will be formed in the vacuum filter tank 9 and the acid mist absorption tower, so that the foam enters the foam suction pipe 8 through the suction hole 821 on the foam suction pipe 8, and then enters the vacuum filter tank 9 through the pipeline. The foam is filtered in the vacuum filter tank 9, and the airflow after filtering enters the acid mist absorption tower 10, which absorbs the acid mist in the airflow. The fan 11 can be turned off after the foam in the pickling tank 1 is completely eliminated.

[0036] Example 2

[0037] like Figure 2 As shown, this embodiment is a further improvement on the basis of embodiment 1, and the details are as follows:

[0038] The suction hole 821 on the foam suction tube 8 can be a macropore or a micropore. When it is a macropore, a filter cloth is put on the foam suction tube 8 at the suction hole 821, or a filter net is covered on the foam suction tube 8 to prevent particulate matter from being sucked into the vacuum filter tank 9.

[0039] Example 3

[0040] like Figure 1 , Figure 2 As shown, this embodiment is a further improvement on the basis of Embodiment 1 or 2, and the details are as follows:

[0041] The foam suction pipe 8 includes: a main suction pipe 810 and a plurality of branch suction pipes 820 connected to the main suction pipe 810 and perpendicular to the main suction pipe 810. A plurality of suction holes 821 are provided on the wall of the branch suction pipe 820. The main suction pipe 810 is connected to the vacuum filter tank 9 via a pipeline. The foam enters the branch suction pipe 820 via the suction holes 821, then enters the main suction pipe 810 via the branch suction pipe 820, and finally enters the vacuum filter tank 9 via the pipeline.

[0042] In this embodiment: the main suction pipe 810 is connected to at least two vacuum filter tanks 9 through a pipeline, each vacuum filter tank 9 is connected to the acid mist absorption tower 10 and the fan 11 in sequence through a pipeline, the inlet of the vacuum filter tank 9 is provided with a valve, and the outlet of the vacuum filter tank 9 is provided with a valve; the main suction pipe 810 is connected to the valve at the inlet of the vacuum filter tank 9 through a pipeline, and the valve is used to control whether the foam sucked in the main suction pipe 810 can enter the vacuum filter tank 9; the valve at the outlet of the vacuum filter tank 9 is connected to the acid mist absorption tower 10 and the fan 11 in sequence through a pipeline, and the vacuum filter tank 9 can be used selectively by switching the valve.

[0043] Example 4

[0044] like Figure 1 As shown, this embodiment is a further improvement on any one of Embodiments 1 to 3, and the details are as follows:

[0045] A valve is provided on the acid delivery pipe 2 between the acid-resistant pump 4 and the heater 3 , and the valve can be used to control whether the acid-resistant pump 4 and the heater 3 are connected.

[0046] In addition, the heater 3 is preferably a heat exchanger, and the medium inlet of the heat exchanger is connected to an external heat source, which can be steam, heat transfer oil, high-temperature flue gas, hot water, etc. Of course, the heater 3 can also be in other forms.

[0047] A valve is provided on the acid delivery pipe 2 between the acid storage container 5 and the acid-resistant pump 4, and the valve can be used to control whether the acid-resistant pump 4 and the acid storage container 5 are connected.

[0048] Example 5

[0049] like Figure 1 As shown, this embodiment is a further improvement on any one of Embodiments 1 to 4, and the details are as follows:

[0050] The grit chamber 7 is connected to the acid-resistant pump 4 via a reflux pipe 12. The clear liquid after sand settling in the grit chamber 7 is sent to the acid-resistant pump 4 via the reflux pipe 12. The acid-resistant pump 4 can send the clear liquid back to the pickling tank 1 via the heater 3 and the acid liquid delivery pipe 2 to achieve recycling. A valve is provided on the reflux pipe 12, through which whether the grit chamber 7 and the acid-resistant pump 4 are connected can be controlled.

[0051] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A fluidized pickling device for granular materials with a defoaming function, characterized in that: include: A pickling tank, wherein an acid inlet is provided at the bottom of the pickling tank, and an overflow port is provided on the top side wall of the pickling tank; the overflow port is connected to the grit chamber via an overflow pipe, and a foam suction pipe is provided above the overflow port in the pickling tank, and a plurality of suction holes are provided on the pipe wall of the foam suction pipe, and the foam suction pipe is connected to a vacuum filter tank via a pipeline, and the vacuum filter tank is connected to an acid mist absorption tower and a blower in sequence via a pipeline.

2. The fluidized pickling device for particulate materials with a defoaming function according to claim 1 is characterized in that: A filter cloth is placed on the foam suction pipe at the suction hole.

3. The fluidized acid washing device for particulate materials with a defoaming function according to claim 1 is characterized in that: The foam suction pipe comprises: a main suction pipe and a plurality of branch suction pipes connected to the main suction pipe, a plurality of suction holes are arranged on the pipe wall of the branch suction pipe, and the main suction pipe is connected to the vacuum filter tank through a pipeline.

4. The fluidized acid washing device for particulate materials with a defoaming function according to claim 3 is characterized in that: The main suction pipe is connected to at least two vacuum filter tanks via a pipeline, and each vacuum filter tank is connected to the acid mist absorption tower and the fan in sequence via a pipeline.

5. A fluidized pickling device for particulate materials with a defoaming function according to claim 3 or 4, characterized in that: The inlet of the vacuum filter tank is provided with a valve, the outlet of the vacuum filter tank is provided with a valve, the main suction pipe is connected with the valve at the inlet of the vacuum filter tank through a pipeline, and the valve at the outlet of the vacuum filter tank is connected with the vacuum suction equipment through a pipeline.

6. The fluidized acid washing device for particulate materials with a defoaming function according to claim 1, characterized in that: The acid inlet is connected in series with a heater, an acid-resistant pump and an acid storage container in sequence through an acid liquid delivery pipe.

7. The fluidized acid washing device for particulate materials with a defoaming function according to claim 6, characterized in that: A valve is provided on the acid delivery pipe between the acid-resistant pump and the heater; a valve is provided on the acid delivery pipe between the acid storage container and the acid-resistant pump; the grit chamber is connected to the acid-resistant pump via a reflux pipe, and a valve is provided on the reflux pipe.

8. The fluidized acid washing device for particulate materials with a defoaming function according to claim 6, characterized in that: The heater is a heat exchanger.

9. The fluidized acid washing device for particulate materials with a defoaming function according to claim 1, characterized in that: The foam suction pipe and / or suction hole are symmetrically distributed along the diameter direction of the top cross section of the pickling tank, or the foam suction pipe and / or suction hole are arranged around the overflow port.

10. The fluidized acid washing device for particulate materials with a defoaming function according to claim 1, characterized in that: The suction port of the foam suction pipe is 5 to 50 mm higher than the overflow port of the pickling tank.

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