Light calcium carbonate carbonization tower

Abstract

The utility model discloses a light calcium carbonate carbonization tower which comprises a carbonization tower main body, a feeding hole formed in the top of the carbonization tower main body, a stirring shaft rotationally mounted in the carbonization tower main body and a first gear mounted on the outer wall of the stirring shaft, and a first gas inlet channel is formed in the stirring shaft in the extending direction of the stirring shaft; first air inlets are formed in the first air inlet channel at equal intervals in the extending direction, the first air inlet channel is communicated with the carbonization tower main body through the first air inlets, and the first air inlets are immersed in a medium. According to the utility model, air is fed in a top intubation manner, and the air inlet is higher than the liquid level to avoid backflow, so that the air outlet is immersed in the liquid to ensure full contact.

Description

Technical Field

[0001] The utility model belongs to the technical field of carbonization towers, in particular to a light calcium carbonate carbonization tower. Background Art

[0002] Light calcium carbonate, also known as precipitated calcium carbonate, or light calcium for short, is made by calcining limestone and other raw materials to produce lime and carbon dioxide, then adding water to digest the lime to produce lime milk, then introducing carbon dioxide to carbonize the lime milk to produce calcium carbonate precipitate, and finally dehydrating, drying and crushing it.

[0003] In the prior art, the carbonization tower consists of a shell, a calcium hydroxide emulsion inlet arranged on the top of the shell, a carbon dioxide inlet arranged below the shell, and an internal stirring structure. Since the gas inlet is below the shell, there is a backflow phenomenon during the air intake process. Utility Model Content

[0004] The utility model aims at solving the problems existing in the prior art and proposes the following technical solutions:

[0005] A light calcium carbonate carbonization tower comprises a carbonization tower body, a feed port installed on the top of the carbonization tower body, a stirring shaft rotatably installed in the carbonization tower body, and a first gear installed on the outer wall of the stirring shaft, wherein a first air inlet channel is provided in the stirring shaft along its extension direction, and first air inlets are equidistantly provided in the first air inlet channel along the extension direction, the first air inlet channel is connected to the carbonization tower body through the first air inlet, and the first air inlet is immersed in a medium.

[0006] Since the gas enters the carbonization tower body through the first air inlet channel and the first air inlet, and the air inlet of the stirring shaft is located above the carbonization tower body and higher than the liquid level in the carbonization tower body, there will be no backflow phenomenon. The top intubation method is used for air intake, and the air inlet is higher than the liquid level to avoid backflow, and the air outlet is immersed in the liquid to ensure sufficient contact.

[0007] As a preferred embodiment of the above technical solution, a stirring blade is installed outside the stirring shaft, and a second air inlet channel connected to the first air inlet channel is opened inside the stirring blade, the second air inlet channel radially extends to open a connected second air inlet port, and the second air inlet port and the second air inlet channel are both immersed in the medium.

[0008] Since the second air inlet channel and the second air inlet are both immersed in the medium, during the stirring process, the gas is discharged from the second air inlet and directly enters the stirred turbulent flow, and can be attracted by the turbulent flow to increase the contact time between the gas and the medium.

[0009] As a preferred embodiment of the above technical solution, the stirring shaft air inlet is connected to an external gas source, and the incoming gas is high-pressure gas to ensure that the gas can break through the medium obstruction and be discharged from the first air inlet and the second air inlet.

[0010] As a preferred embodiment of the above technical solution, the free end of the stirring shaft is coaxially connected with a first gear, a driving device is installed on the carbonization tower body, and the output end of the driving device is connected with a second gear, and the second gear is meshed with the first gear.

[0011] After the driving device is started, the second gear rotates and drives the first gear to rotate synchronously, so as to drive the stirring shaft and the stirring blades to rotate to achieve stirring of the medium in the carbonization tower body.

[0012] The beneficial effects of the utility model are:

[0013] In the present application, air is introduced by means of a top intubation, and the air inlet is made higher than the liquid level to avoid backflow, and the air outlet is immersed in the liquid to ensure full contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The internal structure diagram provided by the embodiment of the utility model is shown;

[0015] Figure 2 The utility model embodiment provided by the present invention Figure 1 A schematic diagram of the structure of the first gear and the second gear in a partial top view.

[0016] Legend:

[0017] 1. Carbonization tower body; 2. Feed inlet; 3. Stirring shaft; 4. First gear; 5. Second gear; 6. Driving device; 7. First air inlet channel; 8. First air inlet; 9. Stirring blades; 10. Second air inlet channel; 11. Second air inlet. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution of the present utility model will be clearly and completely described below in conjunction with the embodiments.

[0019] The present application aims to solve the problem of backflow in the air intake process in the prior art by adopting a top intubation method for air intake, making the air inlet higher than the liquid level to avoid backflow, and immersing the air outlet in the liquid to ensure sufficient contact.

[0020] like Figure 1 and Figure 2As shown, in the embodiment of the utility model, the light calcium carbonate carbonization tower comprises a carbonization tower body 1, a feed port 2 installed on the top of the carbonization tower body 1, a stirring shaft 3 rotatably installed in the carbonization tower body 1, and a first gear 4 installed on the outer wall of the stirring shaft 3, a first air inlet channel 7 is opened in the stirring shaft 3 along its extension direction, and first air inlets 8 are equidistantly opened along the extension direction of the first air inlet channel 7, the first air inlet channel 7 is connected to the carbonization tower body 1 through the first air inlet 8, and the first air inlet 8 is immersed in the medium; because the gas passes through the first air inlet channel 7 and the first air inlet 8, the first air inlet 8 is connected to the carbonization tower body 1, and the first air inlet 8 is immersed in the medium; An air inlet 8 enters the carbonization tower body 1, and the air inlet of the stirring shaft 3 is located above the carbonization tower body 1, higher than the liquid level in the carbonization tower body 1, so there will be no backflow phenomenon; a stirring blade 9 is installed outside the stirring shaft 3, and a second air inlet channel 10 connected to the first air inlet channel 7 is opened in the stirring blade 9, and the second air inlet channel 10 extends radially to open a connected second air inlet 11, and the second air inlet 11 and the second air inlet channel 10 are both immersed in the medium; since the second air inlet channel 10 and the second air inlet 11 are both immersed in the medium, during the stirring process , the gas is discharged from the second air inlet 11 and directly enters the stirred turbulent flow, and can be attracted by the turbulent flow to increase the contact time between the gas and the medium; it should be noted that although the stirring shaft 3 and the stirring blade 9 are provided with air holes, their structural strength is still able to stir the medium in the carbonization tower body 1 to ensure that the reaction is fully carried out; the air inlet of the stirring shaft 3 is connected to an external gas source, and the incoming gas is a high-pressure gas to ensure that the gas can break through the medium and be discharged from the first air inlet 8 and the second air inlet 11; the free end of the stirring shaft 3 is coaxially connected to the first gear 4, and the carbonization tower body 1 A driving device 6 is installed, and the output end of the driving device 6 is connected to a second gear 5, and the second gear 5 is meshed with the first gear 4; after the driving device 6 is started, the second gear 5 rotates and drives the first gear 4 to rotate synchronously, so as to drive the stirring shaft 3 and the stirring blade 9 to rotate to achieve stirring of the medium in the carbonization tower body 1; in some other embodiments, the first gear 4 and the second gear 5 can also be other transmission structures, for example, the first gear 4 and the second gear 5 are both sprockets, and the first gear 4 and the second gear 5 are connected by a chain to achieve driving of the stirring shaft 3.

[0021] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. A light calcium carbonate carbonization tower, comprising a carbonization tower body (1), a feed port (2) mounted on the top of the carbonization tower body (1), a stirring shaft (3) rotatably mounted in the carbonization tower body (1), and a first gear (4) mounted on the outer wall of the stirring shaft (3), characterized in that: A first air inlet channel (7) is provided in the stirring shaft (3) along its extension direction, and first air inlet ports (8) are provided in the first air inlet channel (7) at equal intervals along the extension direction; the first air inlet channel (7) is connected to the carbonization tower body (1) via the first air inlet ports (8), and the first air inlet ports (8) are immersed in the medium.

2. A light calcium carbonate carbonization tower according to claim 1, characterized in that, A stirring blade (9) is installed outside the stirring shaft (3), and a second air inlet channel (10) connected to the first air inlet channel (7) is opened inside the stirring blade (9), and the second air inlet channel (10) is radially extended to open a second air inlet (11) connected thereto, and the second air inlet (11) and the second air inlet channel (10) are both immersed in the medium.

3. A light calcium carbonate carbonization tower according to claim 1, characterized in that, The air inlet of the stirring shaft (3) is connected to an external air source, and the incoming gas is high-pressure gas, so as to ensure that the gas can break through the medium obstruction and be discharged from the first air inlet (8) and the second air inlet (11).

4. A light calcium carbonate carbonization tower according to claim 1, characterized in that, The free end of the stirring shaft (3) is coaxially connected to a first gear (4), a driving device (6) is installed on the carbonization tower body (1), and the output end of the driving device (6) is connected to a second gear (5), and the second gear (5) is meshed with the first gear (4).

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