Particle material fluidization pickling device

Abstract

The utility model relates to a particle material fluidization pickling device which comprises a pickling tank, the pickling tank is formed by connecting a cylinder at the upper part and a cone at the lower part, and the cone part of the pickling tank is provided with an acid inlet and a sand discharge port with a valve; the acid inlet is sequentially connected in series with a heater, an acid-resistant pump and an acid storage container through an acid liquor conveying pipe, and an overflow port is formed in the top of the cylinder of the pickling tank and is communicated with a grit chamber through an overflow pipe; a foam suction pipe is arranged above the overflow port, 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 communicated with vacuum suction equipment through a pipeline. The device has the beneficial effects that by additionally arranging the foam suction pipe, the vacuum filtering tank and the vacuum suction equipment, foam can be sucked into the vacuum filtering tank to be treated in a vacuumizing 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. 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 to overcome the deficiencies in the above-mentioned prior art.

[0004] The utility model solves the above-mentioned technical problems with the following technical solutions: a fluidized pickling device for particulate materials, comprising: a pickling tank, the pickling tank being formed by connecting an upper cylindrical portion with a lower conical portion, the conical portion of the pickling tank being provided with an acid inlet and a sand discharge port with a valve; the acid inlet being connected in series with a heater, an acid-resistant pump and an acid storage container in sequence via an acid delivery pipe, the overflow port at the top of the pickling tank being connected with a sand settling tank via an overflow pipe; a foam suction pipe being provided above the overflow port of the pickling tank, a plurality of suction holes being provided on the pipe wall of the foam suction pipe, the foam suction pipe being connected with a vacuum filter tank via a pipeline, and the vacuum filter tank being connected with a vacuum suction device 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 suction holes of the foam suction pipe are all located at the same level and are 5-50 mm higher than the overflow port of the pickling tank, and more preferably 10-20 mm higher.

[0008] 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.

[0009] 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 vacuum suction equipment via a pipeline.

[0010] 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.

[0011] Furthermore, the vacuum suction equipment is a vacuum pump; or, the vacuum suction equipment is an acid mist absorption tower and a fan connected in sequence, and the vacuum filter tank is connected to the acid mist absorption tower via a pipeline.

[0012] Furthermore, a valve is provided on the acid delivery pipe between the acid-resistant pump and the heater.

[0013] Further, the heater is a heat exchanger.

[0014] Furthermore, a valve is provided on the acid delivery pipe between the acid storage container and the acid-resistant pump.

[0015] 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.

[0016] The beneficial effects of the utility model are:

[0017] 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.

[0018] 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.

[0019] When the acid liquid rises to the overflow port of the pickling tank, turn on the vacuum suction equipment, and the foam will enter the foam suction pipe through the suction hole on the foam suction pipe, and then enter the vacuum filter tank through the pipeline. After the foam in the pickling tank is completely eliminated, the vacuum suction equipment can be turned off.

[0020] By adding a foam suction pipe, a vacuum filter tank and a vacuum suction device, the foam can be sucked into the vacuum filter tank for treatment by vacuuming, thereby eliminating the foam generated during the pickling process to avoid affecting the normal operation of the pickling. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the fluidized pickling device for granular materials in the utility model;

[0022] Figure 2 It is a partial structural diagram of the fluidized acid washing device for granular materials in the utility model.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 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. Vacuum suction equipment, 11. Reflux pipe. DETAILED DESCRIPTION

[0025] 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.

[0026] Example 1

[0027] like Figure 1 As shown, a fluidized pickling device for particulate materials includes: a pickling tank 1, which is composed of an upper cylinder and a lower cone connected to each other. A sand discharge port with a valve is provided on the cone of the pickling tank 1. The structure is designed to facilitate the discharge of accumulated sand in the pickling tank 1.

[0028] The 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 in sequence through an acid liquid delivery 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.

[0029] The overflow port of the pickling tank 1 is connected to the grit tank 7 via the overflow pipe 6 , and the solution after defoaming in the pickling tank 1 can enter the overflow pipe 6 through the overflow port, and then flow to the grit tank 7 through the overflow pipe 6 .

[0030] A foam suction pipe 8 is provided above the overflow port in the pickling tank 1, and a plurality of suction holes 821 are provided on the pipe wall of the foam suction pipe 8. The suction holes 821 are located 10 mm above the overflow port. 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 vacuum suction device 10 via a pipeline.

[0031] The workflow is as follows:

[0032] 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.

[0033] 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.

[0034] When the acid liquid rises to the overflow port of the pickling tank 1, the vacuum suction device 10 is turned on. The vacuum suction device 10 will evacuate the vacuum filter tank 9, 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. After the foam in the pickling tank 1 is completely eliminated, the vacuum suction device 10 can be turned off.

[0035] Example 2

[0036] like Figure 2 As shown, this embodiment is a further improvement on the basis of embodiment 1, and the details are as follows:

[0037] The suction hole 821 on the foam suction tube 8 can be a large hole or a microhole. When it is a large hole, a filter cloth is put on the suction hole 821 of the foam suction tube 8, or a filter net is covered on the foam suction tube 8 to prevent particulate materials from being sucked into the vacuum filter tank 9.

[0038] Example 3

[0039] 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:

[0040] 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. 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.

[0041] In this embodiment: the main suction pipe 810 is connected to at least two vacuum filter tanks 9 via a pipeline, and each vacuum filter tank 9 is connected to the vacuum suction device 10 via a pipeline; a valve is provided at the inlet of the vacuum filter tank 9, and a valve is provided at the outlet of the vacuum filter tank 9.

[0042] The main suction pipe 810 is connected to the valve at the entrance of the vacuum filter tank 9 via 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.

[0043] The valve at the outlet of the vacuum filter tank 9 is connected to the vacuum suction device 10 via a pipeline. By switching the valve, the vacuum filter tank 9 can be selectively used.

[0044] Furthermore: the vacuum suction device 10 is a vacuum pump; or, the vacuum suction device 10 is an acid mist absorption tower and a fan connected in sequence, the vacuum filter tank 9 is connected to the acid mist absorption tower through a pipeline, and the fan is started, and the acid mist in the vacuum filter tank 9 can be sucked into the acid mist absorption tower to remove the acid mist.

[0045] Example 4

[0046] 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:

[0047] 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.

[0048] 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 can also be in other forms.

[0049] A valve is provided on the acid delivery pipe 2 between the acid storage container 5 and the acid-resistant pump 4, through which the conduction between the acid-resistant pump 4 and the acid storage container 5 can be controlled.

[0050] Example 5

[0051] 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:

[0052] The grit chamber 7 is connected to the acid-resistant pump 4 by a reflux pipe 11. The solution after defoaming in the pickling tank 1 overflows into the overflow tank 120, and then enters the grit chamber 7 through the overflow pipe 6. The clear liquid after sand settling in the grit chamber 7 is sent to the acid-resistant pump 4 through the reflux pipe 12. The acid-resistant pump 4 can return the acid to the pickling tank 1 through the heater 3 and the acid delivery pipe 2 to achieve recycling. A valve is provided on the reflux pipe 11, and the valve can be used to control whether the grit chamber 7 and the acid-resistant pump 4 are connected.

[0053] 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, characterized in that: include: A pickling tank, wherein the pickling tank is formed by connecting an upper cylinder with a lower cone, and the cone portion of the pickling tank is provided with an acid inlet and a sand discharge port with a valve; the acid inlet is connected in series with a heater, an acid-resistant pump and an acid storage container in sequence through an acid delivery pipe, and an overflow port is provided at the top of the cylinder of the pickling tank, and the overflow port is connected with a sand settling tank through an overflow pipe; a foam suction pipe is provided above the overflow port, and a plurality of suction holes are provided on the pipe wall of the foam suction pipe, and the foam suction pipe is connected with a vacuum filter tank through a pipeline, and the vacuum filter tank is connected with a vacuum suction device through a pipeline.

2. A fluidized pickling device for particulate materials according to claim 1, characterized in that: The suction hole of the foam suction pipe is covered with a filter cloth.

3. A fluidized pickling device for particulate materials according to claim 1, 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. A fluidized pickling device for particulate materials according to claim 3, 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 a vacuum suction device via a pipeline.

5. A fluidized pickling device for particulate materials 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. A fluidized pickling device for particulate materials according to claim 1, characterized in that: The vacuum suction equipment is a vacuum pump; or, the vacuum suction equipment is an acid mist absorption tower and a fan connected in sequence, and the vacuum filter tank is connected to the acid mist absorption tower through a pipeline.

7. A fluidized acid washing device for particulate materials according to claim 1, characterized in that: A valve is provided on the acid liquid delivery pipe between the acid-resistant pump and the heater; a valve is provided on the acid liquid delivery pipe between the acid storage container and the acid-resistant pump.

8. The fluidized acid washing device for particulate materials according to claim 1, characterized in that: The heater is a heat exchanger.

9. A fluidized acid washing device for particulate materials according to claim 1, characterized in that: The suction holes of the foam suction pipe are all located at the same horizontal height and are 5 to 50 mm higher than the overflow port of the pickling tank.

10. A fluidized pickling device for particulate materials according to claim 1, characterized in that: The grit chamber is connected to the acid-resistant pump through a reflux pipe, and a valve is arranged on the reflux pipe.

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