Nano calcium carbonate drying equipment

Abstract

The utility model discloses nano calcium carbonate drying equipment, which relates to the technical field of nano calcium carbonate drying, and comprises an upper box body and a lower box body, a cavity of the upper box body is communicated with a cavity of the lower box body through a transition pipeline, and the top of the upper box body and the top of the lower box body are both sealed by a top plate to conduct smoke heat. The upper box body comprises an upper box, a first heat storage plate and a first circulation pipe, wherein the first heat storage plate and the first circulation pipe are arranged in the upper box. The lower box body comprises a lower box, a second heat storage plate and a second circulation pipe, wherein the second heat storage plate and the second circulation pipe are arranged in the lower box. Through the arrangement of the first circulation pipe, the second circulation pipe, the first heat storage plate and the second heat storage plate, smoke directly circulates in the straight pipes and does not make contact with the top plate, the problem of adhesion and blockage of smoke dust is solved, and the heat exchange efficiency and the temperature equalizing effect are improved through the design of a heat conduction and heat dissipation structure with a large contact area.

Description

Technical Field

[0001] The utility model relates to the technical field of nano calcium carbonate drying, in particular to a nano calcium carbonate drying device. Background Art

[0002] In the production process of nano calcium carbonate, it is necessary to dehydrate and dry the nano calcium carbonate slurry formed by carbonization into dry powder. In actual production, in order to reduce energy consumption, waste heat is generally used for drying. The high-temperature flue gas generated by a lime calcination kiln is used to dry the nano calcium carbonate filter cake, which can greatly reduce production energy consumption. However, in the flow channel of waste heat utilization of the flue gas, the flue gas flows rapidly, and the heat storage effect of the flue gas heat is not good. Thus, it can be seen that the heat cannot be utilized in time and is discharged, and the waste heat utilization rate of the flue gas is not high. The traditional improvement method is to add a heat storage plate in the flow channel to quickly absorb the heat of the flue gas, and improve the heat exchange efficiency through a large contact area; however, the flue gas contains some soot, and in the actual production process, it is found that the soot in the flow channel is easily adhered to the heat storage plate and the porous heat transmission slots due to the obstruction of the wavy heat storage plate and the porous heat transmission slots. In the long run, the heat transmission slots are easily blocked, the heat conduction efficiency of the heat storage plate becomes poor, and the heat energy utilization efficiency is affected.

[0003] Therefore, in order to further improve the heat utilization rate, save and rationally utilize resources, we further improved on the basis of the existing drying device in the factory, so as to provide a nano calcium carbonate drying device. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a nano calcium carbonate drying device, which solves the problem that when using the waste heat of the flue gas from the calcination kiln to dry nano calcium carbonate, the soot contained in the flue gas is easily adhered to the heat storage plate and the porous heat transmission slots due to the obstruction of the wavy heat storage plate and the porous heat transmission slots. In the long run, the heat transmission slots are easily blocked, the heat conduction efficiency of the heat storage plate becomes poor, and the heat energy utilization efficiency is affected.

[0005] To achieve the above object, the utility model provides the following technical solution: A nano calcium carbonate drying device includes an upper box body and a lower box body. The chambers of the upper box body and the lower box body are connected and communicated through a transition pipeline. The tops of the upper box body and the lower box body are both sealed by a top plate to conduct the heat of the flue gas. The upper box body includes an upper box and a first heat storage plate and a first flow pipe arranged inside the upper box. One end of the first flow pipe is arranged at the connection end close to the transition pipeline, and the other end of the first flow pipe extends to the flue gas inlet close to the upper box body. The first flow pipes are distributed in multiple groups in a matrix along the longitudinal and height directions inside the upper box, and the first heat storage plate is arranged on the first flow pipe at intervals in the transverse direction inside the upper box;

[0006] The lower box body includes a lower box and a second heat storage plate and a second flow pipe arranged inside the lower box. One end of the second flow pipe is arranged near the connection end of the transition pipe, and the other end of the second flow pipe extends to near the tail gas outlet of the lower box body. The second flow pipes are distributed in multiple groups in a matrix along the longitudinal and height directions inside the lower box, and the second heat storage plates are arranged on the second flow pipes at lateral intervals inside the lower box.

[0007] Preferably, the first heat storage plate and the second heat storage plate are both provided with round holes distributed in a matrix, and the first flow pipe passes through the round holes to connect multiple groups of the first heat storage plates in series, and the second flow pipe passes through the round holes to connect multiple groups of the second heat storage plates in series.

[0008] Preferably, both the first flow pipe and the second flow pipe are straight pipes with smooth inner walls, and the first flow pipes and the second flow pipes distributed in a matrix form a flue gas channel for flue gas diversion.

[0009] Preferably, the tops of the first heat storage plate and the second heat storage plate are in close contact with the corresponding top plate for heat transfer.

[0010] Preferably, the box plates of the upper box and the box plates of the lower box are both provided with heat insulation layers.

[0011] The utility model has the following beneficial effects:

[0012] 1. The first flow pipe and the second flow pipe are provided. Both the first flow pipe and the second flow pipe are heat conduction pipes for flue gas to flow inside the pipes. The flue gas, as a heat source, can conduct a large amount of heat transfer through the dense heat conduction pipes. The heat of the flue gas is quickly absorbed by the first flow pipes and the second flow pipes distributed densely in a large area.

[0013] 2. The first flow pipe and the second flow pipe with smooth inner walls do not impede the flow of the flue gas, and the flue gas directly flows inside the straight pipes without contacting the top plate, reducing the problem of soot adhesion and blockage.

[0014] 3. The first heat storage plate and the second heat storage plate with a large contact area are beneficial to improving the heat exchange efficiency and accelerating the heating speed of the top plate. On the other hand, the first heat storage plate and the second heat storage plate distributed densely and evenly improve the temperature uniformity effect, and the first heat storage plate and the second heat storage plate respectively absorb the heat of the first flow pipe and the second flow pipe to play the role of storing heat, improving the heat utilization rate of the tail gas flue gas. Description of the Drawings

[0015] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 is an exploded view of the utility model;

[0017] Figure 3Structural schematic diagram at the position of the first heat storage plate of the present utility model;

[0018] Figure 4 of the present utility model Figure 3 Enlarged view of the structure at position A in it.

[0019] In the figure: 1. Upper box body; 11. Upper box; 12. First heat storage plate; 13. First flow pipe; 101. Flue gas inlet; 2. Lower box body; 21. Lower box; 22. Second heat storage plate; 23. Second flow pipe; 201. Tail gas outlet; 121. Heat preservation interlayer; 3. Transition pipe; 4. Top plate. Specific implementation manner

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] As Figures 1-4 shown, the present utility model provides a technical solution: a nano calcium carbonate drying device, including an upper box body 1 and a lower box body 2. The chambers of the upper box body 1 and the lower box body 2 are connected and communicated through a transition pipe 3 for flue gas circulation. The tops of the upper box body 1 and the lower box body 2 are sealed by a top plate 4 to conduct the heat of the flue gas. Heat preservation interlayers 121 are provided on the box plates of the upper box 11 and the lower box 21 of the upper box body 1 and the lower box body 2. The upper box body 1 includes an upper box 11, a first heat storage plate 12 and a first flow pipe 13 arranged inside the upper box 11. One end of the first flow pipe 13 is arranged at the connection end close to the transition pipe 3, and the other end of the first flow pipe 13 extends to the position close to the flue gas inlet 101 of the upper box body 1. Multiple groups of the first flow pipes 13 are distributed in a matrix along the longitudinal and height directions in the upper box 11, and the first heat storage plates 12 are arranged at intervals in the transverse direction on the first flow pipes 13 in the upper box 11;

[0022] The lower box body 2 includes a lower box 21, a second heat storage plate 22 and a second flow pipe 23 arranged inside the lower box 21. One end of the second flow pipe 23 is arranged at the connection end close to the transition pipe 3, and the other end of the second flow pipe 23 extends to the position close to the tail gas outlet 201 of the lower box body 2. Multiple groups of the second flow pipes 23 are distributed in a matrix along the longitudinal and height directions in the lower box 21, and the second heat storage plates 22 are arranged at intervals in the transverse direction on the second flow pipes 23 in the lower box 21;

[0023] The first flow pipe 13 and the second flow pipe 23 have the same structure and are both made of metal pipes with good heat conduction. The first heat storage plate 12 and the second heat storage plate 22 have the same structure and are both made of metal plates with good heat conduction, and are designed with a large heat dissipation area. Through the design of a uniformly dispersed sheet shape, the purpose of heat dissipation is achieved. The first flow pipe 13 and the second flow pipe 23 are both straight pipes with smooth inner walls, and the first flow pipes 13 and the second flow pipes 23 distributed in a matrix form form a flue gas channel for flue gas diversion. The first heat storage plate 12 and the second heat storage plate 22 are both provided with round holes distributed in a matrix form, and the first flow pipe 13 passes through the round holes to connect multiple groups of the first heat storage plates 12 in series, and the second flow pipe 23 passes through the round holes to connect multiple groups of the second heat storage plates 22 in series. The tops of the first heat storage plate 12 and the second heat storage plate 22 are both in close contact with the corresponding top plate 4 for heat transfer.

[0024] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0025] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A nano-calcium carbonate drying device, comprising an upper box body (1) and a lower box body (2), the chambers of the upper box body (1) and the lower box body (2) are connected and communicated through a transition pipeline (3), and the tops of the upper box body (1) and the lower box body (2) are both sealed by a top plate (4) to conduct the heat of flue gas, and it is characterized in that: The upper box body (1) includes an upper box (11), a first heat storage plate (12) and a first flow pipe (13) arranged inside the upper box (11). One end of the first flow pipe (13) is arranged near the connection end of the transition pipe (3), and the other end of the first flow pipe (13) extends to near the flue gas inlet (101) of the upper box body (1). The first flow pipes (13) are distributed in multiple groups in a matrix along the longitudinal and height directions inside the upper box (11), and the first heat storage plate (12) is arranged on the first flow pipes (13) at intervals in the transverse direction inside the upper box (11). The lower box body (2) includes a lower box (21), a second heat storage plate (22) and a second flow pipe (23) arranged inside the lower box (21). One end of the second flow pipe (23) is arranged near the connection end of the transition pipe (3), and the other end of the second flow pipe (23) extends to near the tail gas outlet (201) of the lower box body (2). The second flow pipes (23) are distributed in multiple groups in a matrix along the longitudinal and height directions inside the lower box (21), and the second heat storage plate (22) is arranged on the second flow pipes (23) at intervals in the transverse direction inside the lower box (21).

2. The nano calcium carbonate drying equipment according to claim 1, characterized in that: The first heat storage plate (12) and the second heat storage plate (22) are both provided with round holes distributed in a matrix. The first flow pipe (13) passes through the round holes to connect multiple groups of the first heat storage plates (12) in series, and the second flow pipe (23) passes through the round holes to connect multiple groups of the second heat storage plates (22) in series.

3. The nano-calcium carbonate drying equipment according to claim 1, characterized in that: Both the first flow pipe (13) and the second flow pipe (23) are straight pipes with smooth inner walls, and the first flow pipes (13) and the second flow pipes (23) distributed in a matrix form a flue gas channel for flue gas shunting.

4. The nano-calcium carbonate drying equipment according to claim 1, characterized in that: The tops of the first heat storage plate (12) and the second heat storage plate (22) are in close contact with the corresponding top plate (4) for heat transfer.

5. A nano calcium carbonate drying device according to claim 1, characterized in that: The box plates of the upper box (11) and the box plates of the lower box (21) are both provided with heat insulation layers (121).

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