Carbonization kettle for producing nano calcium carbonate

Abstract

The utility model discloses a carbonization kettle for producing nano calcium carbonate, which comprises a kettle body, a slurry inlet pipe connected to the surface of the upper half part of the kettle body and a plurality of gas inlet pipes connected to the surface of the kettle body and close to the bottom, the gas inlet pipes are horizontally arranged and are equidistantly arranged along the vertical direction; the gas inlet ends of the plurality of gas inlet pipes are connected with a gas conveying pipe through a multi-way pipe fitting, an annular flow dividing bin is horizontally and fixedly connected to the interior of the kettle body, the plurality of gas inlet pipes are respectively communicated with a plurality of cavities formed by separating the flow dividing bin by partition plates, and a plurality of gas outlet pipes which are horizontally arranged are connected to the bin wall of the inner side of the flow dividing bin at equal intervals in the axial direction and the circumferential direction. The gas outlet pipe is horizontally arranged, nanometer calcium carbonate sediment is not prone to entering, meanwhile, the one-way valve is arranged at the gas inlet end of the gas outlet pipe, nanometer calcium carbonate slurry cannot enter the flow dividing bin, the effect of preventing sediment from blocking the flow dividing bin and the gas outlet pipe is achieved, smooth input of carbon dioxide gas is prevented from being affected, and maintenance is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of carbonization kettles, and specifically relates to a carbonization kettle for producing nano calcium carbonate. Background Technique

[0002] The specific production process of nano calcium carbonate is as follows: The aged refined calcium hydroxide emulsion is pumped into a carbonization temperature control pool by a pump for temperature adjustment. When the temperature reaches the requirements for preparing various types of nano calcium, the calcium hydroxide emulsion is sent into the carbonization reaction kettle by a carbonization circulation pump. At the same time, gas with a certain carbon dioxide concentration after being treated in the calcination section is introduced into the carbonization reaction kettle. In the carbonization reaction kettle, the carbon dioxide gas and the calcium hydroxide emulsion fully contact and undergo a chemical reaction to generate nano calcium carbonate.

[0003] During the production and manufacturing process of nano calcium carbonate, the carbonization reaction is a key step in determining the quality of nano calcium carbonate. Most of the carbonization reaction kettles currently used by many enterprises have relatively simple structures, similar to the structure of a nano calcium carbonate carbonization tower disclosed in Patent Application No. 202120695772.7. Carbon dioxide gas is input through a carbon dioxide distributor below the interior of the carbonization reaction kettle. Since its nozzles or spray holes are arranged upward, and the nano calcium carbonate generated by the reaction is a solid precipitate, it is very easy to enter the carbon dioxide distributor from the nozzles and spray holes facing upward, resulting in difficulty in discharging, difficulty in cleaning, blockage, and affecting air intake. It requires manual maintenance every once in a while, bringing inconvenience to use and having deficiencies. Summary of the Utility Model

[0004] Aiming at the deficiencies existing in the prior art, the utility model provides a carbonization kettle for producing nano calcium carbonate, which is used to solve the problems that the nano calcium carbonate solid precipitate generated by the existing carbonization kettle for producing nano calcium carbonate easily enters the carbon dioxide distributor, resulting in difficulty in discharging, difficulty in cleaning, blockage, and affecting air intake.

[0005] To solve the above technical problems, the utility model provides the following technical solutions:

[0006] A carbonization kettle for producing nano calcium carbonate includes a kettle body, a slurry inlet pipe connected to the surface of the upper half of the kettle body, and an air inlet pipe connected to the surface of the kettle body near the bottom position. The air inlet pipe is horizontally arranged, there are multiple air inlet pipes and they are arranged equidistantly in the vertical direction. The air inlet ends of the multiple air inlet pipes are connected to an air delivery pipe through a multi-way pipe fitting. A ring-shaped diversion chamber is horizontally and fixedly connected inside the kettle body. A plurality of horizontal partition plates are arranged equidistantly in the vertical direction inside the diversion chamber. The multiple air inlet pipes are respectively connected to the multiple cavities formed by the partition plates in the diversion chamber. A plurality of horizontally arranged air outlet pipes are equidistantly connected to the inner wall of the diversion chamber along the axial and circumferential directions.

[0007] Preferably, a gas pressure reducing valve is installed on each of the intake pipes.

[0008] Preferably, the gas pressure reducing valves on two adjacent intake pipes are installed in a staggered manner.

[0009] Preferably, a sloping flow guiding plate is fixedly connected between the top of the shunt bin and the inner wall of the kettle body.

[0010] Preferably, a check valve is installed at one end of the outlet pipe located inside the shunt bin.

[0011] Preferably, the lengths of the outlet pipes distributed from top to bottom inside the shunt bin increase in sequence.

[0012] Compared with the prior art, the present utility model has the following beneficial effects:

[0013] In the present utility model, the outlet pipe is horizontally arranged, so that nano calcium carbonate precipitate is not easily introduced. At the same time, a check valve is arranged at the air inlet end of the outlet pipe, and the nano calcium carbonate slurry will not enter the shunt bin either, achieving the effect of avoiding precipitation blockage of the shunt bin and the outlet pipe, preventing the smooth input of carbon dioxide gas, facilitating maintenance, and solving the problems that the nano calcium carbonate solid precipitate generated by the carbonization kettle for producing nano calcium carbonate in the prior art is easily introduced into the carbon dioxide distributor, resulting in difficult discharge, difficult cleaning, blockage, and affecting air intake. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a partial structure cross-sectional view at the corresponding position of the shunt bin of the present utility model;

[0016] Figure 3 is a cross-sectional view of the shunt bin of the present utility model;

[0017] Figure 4 is a top view of the internal structure of the shunt bin of the present utility model.

[0018] In the figure: 1, kettle body; 2, slurry inlet pipe; 3, intake pipe; 4, multi-way pipe fitting; 5, gas transmission pipe; 6, shunt bin; 7, partition board; 8, outlet pipe; 9, gas pressure reducing valve; 10, sloping flow guiding plate; 11, check valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] As Figures 1-4 shown, the present utility model provides a technical solution: a carbonization kettle for producing nano calcium carbonate, which includes a kettle body 1, a slurry inlet pipe 2 connected to the upper half surface of the kettle body 1, and an air inlet pipe 3 connected to the surface of the kettle body 1 near the bottom position. The air inlet pipe 3 is horizontally arranged, and there are multiple air inlet pipes 3 arranged at equal intervals in the vertical direction;

[0021] The air inlet ends of the multiple air inlet pipes 3 are connected to an air delivery pipe 5 through a multi-way pipe fitting 4. A gas pressure reducing valve 9 is installed on each air inlet pipe 3, and the gas pressure reducing valves 9 on adjacent two air inlet pipes 3 are installed in a staggered manner to avoid insufficient distance affecting installation. The gas pressure reducing valve 9 can respectively adjust the carbon dioxide gas inlet pressure of each air inlet pipe 3 to adjust the carbon dioxide gas flow rate of each layer of the outlet pipe 8;

[0022] A circular diversion bin 6 is horizontally and fixedly connected inside the kettle body 1. A slope diversion plate 10 is fixedly connected between the top of the diversion bin 6 and the inner wall of the kettle body 1 to avoid nano calcium carbonate precipitation depositing on the top of the diversion bin 6 and causing inability to discharge materials. A plurality of horizontal partition plates 7 are arranged at equal intervals in the vertical direction inside the diversion bin 6, and the multiple air inlet pipes 3 are respectively communicated with the multiple cavities formed by the partition plates 7 in the diversion bin 6;

[0023] A plurality of horizontally arranged outlet pipes 8 are equidistantly connected to the inner side wall of the diversion bin 6 along the axial and circumferential directions. The lengths of the outlet pipes 8 distributed from top to bottom inside the diversion bin 6 increase in sequence. The outlet pipe 8 with a larger length conveys carbon dioxide gas to a position near the axis inside the kettle body 1, and the outlet pipe 8 with a smaller length conveys carbon dioxide gas to a position near the inner wall inside the kettle body 1, so that the carbon dioxide gas is evenly input to promote its full reaction. A one-way valve 11 is installed at one end of the outlet pipe 8 located inside the diversion bin 6 to avoid calcium hydroxide emulsion and nano calcium carbonate slurry entering the diversion bin 6 and causing precipitation blockage of the air inlet.

[0024] Working principle:

[0025] The calcium hydroxide emulsion is input into the kettle body 1 through the slurry inlet pipe 2. The carbon dioxide gas conveyed by the air delivery pipe 5 is dispersed into the multiple air inlet pipes 3 through the multi-way pipe fitting 4. The carbon dioxide gas pressure of each air inlet pipe 3 can be individually adjusted through the gas pressure reducing valve 9 to adjust the gas flow rate. The carbon dioxide gas is in the diversion bin 6 and then is dispersed through the multiple outlet pipes 8 arranged at equal intervals along the circumferential and axial directions on the inner side of the diversion bin 6. The lengths of the outlet pipes 8 distributed from top to bottom inside the diversion bin 6 increase in sequence, so that the carbon dioxide is evenly input. The outlet pipe 8 is horizontally arranged, and nano calcium carbonate precipitation is not easy to enter, and a one-way valve 11 is arranged at the air inlet end of the outlet pipe 8, and the nano calcium carbonate slurry will not enter the diversion bin 6 either, thereby avoiding precipitation blockage of the diversion bin 6 and the outlet pipe 8 and affecting the smooth input of carbon dioxide gas.

[0026] It should be noted that in this text, terms such as "including", "comprising", or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or elements inherent to such a process, method, article, or device.

[0027] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A carbonization kettle for producing nano calcium carbonate, comprising a kettle body (1), a slurry inlet pipe (2) connected to the upper half surface of the kettle body (1), and an air inlet pipe (3) connected to the surface of the kettle body (1) near the bottom position, characterized in that: The intake pipe (3) is horizontally arranged. There are multiple intake pipes (3) which are arranged at equal intervals in the vertical direction. The intake ends of the multiple intake pipes (3) are connected to the gas transmission pipe (5) through a multi-way pipe fitting (4). Inside the kettle body (1), a ring-shaped flow distribution chamber (6) is fixedly connected horizontally. Inside the flow distribution chamber (6), a plurality of horizontal partition plates (7) are arranged at equal intervals in the vertical direction. The multiple intake pipes (3) are respectively communicated with the multiple cavities formed by the partition plates (7) in the flow distribution chamber (6). On the inner side wall of the flow distribution chamber (6), a plurality of horizontally arranged outlet pipes (8) are connected at equal intervals along the axial and circumferential directions.

2. The carbonization kettle for producing nano calcium carbonate according to claim 1, characterized in that: A gas pressure reducing valve (9) is installed on each intake pipe (3).

3. The carbonization kettle for producing nano calcium carbonate according to claim 2, characterized in that: The gas pressure reducing valves (9) on two adjacent intake pipes (3) are installed in a staggered manner.

4. A carbonization kettle for producing nano calcium carbonate according to claim 1, characterized in that: A slope-shaped flow guiding plate (10) is fixedly connected between the top of the flow distribution chamber (6) and the inner wall of the kettle body (1).

5. The carbonization kettle for producing nano calcium carbonate according to claim 1, characterized in that: A one-way valve (11) is installed at one end of the outlet pipe (8) located inside the flow distribution chamber (6).

6. The carbonization kettle for producing nano calcium carbonate according to claim 1, characterized in that: The lengths of the outlet pipes (8) distributed from top to bottom inside the flow distribution chamber (6) increase in sequence.

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