CN215855142U - Mannheim reaction furnace for potassium sulfate production - Google Patents
Mannheim reaction furnace for potassium sulfate production Download PDFInfo
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- CN215855142U CN215855142U CN202122322726.5U CN202122322726U CN215855142U CN 215855142 U CN215855142 U CN 215855142U CN 202122322726 U CN202122322726 U CN 202122322726U CN 215855142 U CN215855142 U CN 215855142U
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Abstract
The utility model relates to the technical field of potassium sulfate production equipment, in particular to a Mannheim reaction furnace for potassium sulfate production, which comprises a reaction chamber, wherein a combustion chamber is arranged above the reaction chamber, a combustion nozzle is arranged on one side of the combustion chamber, a flue gas chamber is arranged below the reaction chamber, a separation layer is arranged between the reaction chamber and the flue gas chamber, and a communication port is arranged on the separation layer. Because the hot gas flow after burning passes through above the roof of reacting chamber earlier, makes the air current pass through below the diapire of reacting chamber again, on the one hand the simultaneous heating about the reacting chamber, has utilized the flue gas, has improved thermal utilization ratio, in addition for upwards heating from the bottom, the even degree of hot gas flow improves, is favorable to the reaction to go on fully. The projection of the reaction chamber on the horizontal plane is circular, and the projection on the vertical plane is oval. The circular projection is for the convenience of agitating unit's setting, and the projection of vertical face has increased the length of combustion chamber and flue gas chamber for the ellipse, increases the heat transfer time and has improved the heat transfer effect.
Description
Technical Field
The utility model relates to the technical field of potassium sulfate production equipment, in particular to a Mannheim reaction furnace for producing potassium sulfate.
Background
The technological process of producing potassium sulfate with Mannheim method includes heating potassium chloride and concentrated sulfuric acid in Mannheim furnace to react to obtain potassium sulfate and hydrochloric acid as side product.
The existing Mannheim furnace generally adopts a structure form that the upper part is a combustion chamber and the lower part is a reaction chamber, for example, patent CN 210683236U-a Mannheim method potassium sulfate reaction furnace. The heating mode is easy to arrange the reaction chamber, but only heats the upper part of the reaction chamber, the heating efficiency is low, and the heat energy discharged from the upper part of the flue gas is low in utilization efficiency.
Some methods of heating the lower part are also adopted, for example, in patent CN 2931449Y-potassium sulfate reaction furnace, the heating part is located below the reaction chamber, so that the hot air flow is from bottom to top, which is convenient for heating the bottom of the reaction chamber, but the scheme of heating from bottom to top is adopted, because of side fire spraying, the generated heat flow is easy to pass through the bottom of the reaction type in a non-uniform manner in the process from bottom to top, which affects the heating process.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the background art, the utility model aims to provide a Mannheim reaction furnace for producing potassium sulfate, which is heated as uniformly as possible and can improve the utilization rate of heat energy.
The basic scheme is as follows: the cavity body through which the hot air flows from the top wall of the reaction chamber is a combustion chamber, and the cavity body through which the hot air flows from the lower part of the reaction chamber is a flue gas chamber. Flue gas chamber and combustion chamber are separated by the stratum reticulare, and the combustion chamber is the upper wall from top parcel reacting chamber, and the flue gas chamber sets up the intercommunication mouth at the stratum reticulare from the lower wall that the reacting chamber is included to the below, makes the air current can follow the combustion chamber and flow into flue gas chamber.
In order to enable hot air flow to be in contact with the outer wall of the reaction chamber for a longer time, the combustion nozzle and the communication port are arranged at the opposite position of the separation layer, and the air outlet is arranged below the position of the combustion nozzle of the separation layer.
The communicating holes are only arranged at the opposite positions of the combustion nozzles of the separating layers, so that the problem that hot air flows to the flue gas chamber and the resistance is large can be solved, the flow of the air flow can be reduced, and the heat exchange quantity can also be reduced. To balance this contradiction, a plurality of communication ports are provided, and the communication port located farther from the burner tip is larger than the communication port located closer to the burner tip.
The specific scheme is as follows.
The utility model provides a potassium sulphate production is with mannheim reacting furnace, includes the reaction chamber, the reaction chamber top sets up the combustion chamber, combustion chamber one side sets up the burner tip, the reaction chamber below sets up flue gas chamber, the reaction chamber with set up the separate layer between the flue gas chamber, the separate layer sets up the intercommunication mouth.
In a further improvement, the communication port is arranged at a position opposite to the combustion nozzle of the separation layer.
In a further improvement, the communication ports are multiple, and the multiple communication ports enable the ventilation area of the separation layer at the position far away from the burner tip to be larger than the area of the separation layer at the position close to the burner tip.
In a further improvement, the projection of the reaction chamber on the horizontal plane is circular, and the projection on the vertical plane is oval. The circular projection of horizontal plane is for the convenience of agitating unit's setting, and the projection of vertical face is the ellipse for the length that increases combustion chamber and flue gas chamber to increase heat transfer time.
In a further improvement, the upper part of the reaction chamber is provided with a feed opening, the feed opening is connected with a feed pipe, and the feed pipe upwards passes through the combustion chamber and is exposed out of the furnace body shell. For receiving the charge. The down pipe 22 is made of refractory material.
In a further improvement, the upper part of the reaction chamber is also provided with an air outlet which is connected with an air outlet pipe, the air outlet pipe obliquely penetrates through the combustion chamber 1 upwards and is exposed out of the furnace body shell 4 for discharging HCL gas, the chamber wall of the reaction chamber is connected with the furnace body shell near the center line of the side part, namely the chamber wall of the reaction chamber at the position is the inner wall of the furnace body shell. And a discharge port is arranged on one side of the reaction chamber, penetrates through the chamber wall of the reaction chamber, and the chamber wall is the inner wall of the furnace body shell.
In a further improvement, a supporting structure is arranged below the reaction chamber, the supporting structure adopts a supporting column, and the cross section of the supporting column is circular or elliptical.
Compared with the prior art, the utility model has the beneficial effects that:
(1) according to the Mannheim reaction furnace for producing potassium sulfate, hot air after combustion firstly passes through the upper surface of the top wall of the reaction chamber, and then the air flow passes through the lower surface of the bottom wall of the reaction chamber, so that the reaction chamber is simultaneously heated up and down, flue gas is utilized, the utilization rate of heat is improved, and in addition, compared with the mode of heating from the bottom upwards, the uniformity degree of the hot air flow is improved, and the full reaction is facilitated.
(2) The projection of the reaction chamber on the horizontal plane is circular, and the projection on the vertical plane is elliptical. The circular projection of horizontal plane is for the convenience of agitating unit's setting, and the projection of vertical face is the length in order to increase combustion chamber and flue gas chamber for the ellipse to increase heat transfer time and further improved the heat transfer effect.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application, and in which:
FIG. 1 is a schematic view showing the structure of a separation layer in a Mannheim reactor for potassium sulfate production;
FIG. 2 is a schematic structural view of a Mannheim reaction furnace for potassium sulfate production showing a stirring device and a supporting device;
FIG. 3 is a schematic cross-sectional view of a partition plate of a Mannheim reaction furnace for potassium sulfate production;
FIG. 4 is a schematic cross-sectional view of another structure of the partition plate of the Mannheim reactor for potassium sulfate production.
In the figure:
1 combustion chamber
11 a burner is arranged on one side
2 reaction chamber
21 feed opening
22 blanking tube
23 air outlet
24 air outlet pipe
25 discharge hole
3 flue gas chamber
31 exhaust port
4 furnace body shell
5 separating layer
51 communication port
6 stirring device
7 supporting structure
Detailed Description
Embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.
As the background art indicates, the existing mannheim furnace has the problem that the heat exchange efficiency needs to be further improved by heating from the upper part of the reaction chamber and discharging the flue gas from the upper part, or heating from the lower part of the reaction chamber, passing the hot gas flow below the bottom wall of the reaction chamber and discharging the flue gas from the upper part. The embodiment provides a manheim reacting furnace for potassium sulfate production, is heated more evenly to improve the utilization ratio of heat energy.
As shown in fig. 1 to 3, a mannheim reaction furnace (hereinafter referred to as a reaction furnace) for potassium sulfate production includes three chambers, which are a combustion chamber 1, a reaction chamber 2, and a flue gas chamber 3, respectively, fuel is combusted in the combustion chamber to provide heat for the reaction chamber from above, and combusted flue gas enters the flue gas chamber, continues to provide heat from below the reaction chamber, and then enters an exhaust system from an exhaust port.
The whole reaction furnace is square, the inner layer of the furnace body shell 4 of the reaction furnace can be built by refractory bricks or poured by refractory materials, and the outer layer of the reaction furnace adopts insulating bricks. The reaction chamber 2 is positioned in the furnace body shell 4 and is an ellipsoid cavity, the outer wall of the horizontal center line position of the chamber wall of the reaction chamber 2 is provided with a separation layer 5 which extends to the inner wall of the furnace body shell, and the chamber wall of the reaction chamber 2 and the combustion chamber 1 jointly separate the interior of the furnace body shell into three cavities. The separation layer 5 is provided with communication openings 51 allowing the hot gas flow from the combustion chamber into the flue gas chamber.
A burner 11 is arranged at one side of the combustion chamber 1 to provide fuel and air required by combustion, heat is provided by combustion in the combustion chamber, the inner wall of the combustion chamber 1 is the inner wall of the shell of the reaction furnace at the upper part and the side part, and the outer wall of the reaction chamber and the upper surface of the separation layer 5 are arranged at the lower part. The gas burned in the combustion chamber 1 heats the reaction chamber 2 and then enters the flue gas chamber 3 through the communication port 51.
The projection of the reaction chamber 2 on the horizontal plane is circular, and the projection on the vertical plane is oval. The circular projection of horizontal plane is for the convenience of agitating unit's setting, and the projection of vertical face is the ellipse for the length that increases combustion chamber and flue gas chamber to increase heat transfer time.
The outer layer of the reaction chamber 2 is made of high-alumina refractory bricks, and the inner layer of the reaction chamber is made of alloy materials. The upper part is provided with a feed opening 21, the feed opening 21 is connected with a feed pipe 22, and the feed pipe 22 upwards passes through the combustion chamber 1 and is exposed out of the furnace body shell 4 for receiving fed materials. The down pipe 22 is made of refractory material. The upper part of the reaction chamber 2 is also provided with an air outlet 23, the air outlet 23 is connected with an air outlet pipe 24, and the air outlet pipe 24 penetrates through the combustion chamber 1 obliquely upwards and is exposed out of the furnace body shell 4 for discharging HCL gas.
The chamber wall of the reaction chamber 2 is connected with the furnace body shell near the center line of the side part, namely the chamber wall of the reaction chamber at the position is the inner wall of the furnace body shell. A discharge port 25 is arranged on one side of the lower wall of the reaction chamber 2, the discharge port 25 penetrates through the chamber wall of the reaction chamber and is used for discharging potassium sulfate particles, and the wall and the furnace body shell are a common chamber wall. The purpose of this design is to be favorable to arranging of discharge gate, reduces discharge gate length, is favorable to the smooth ejection of compact.
The top of the flue gas chamber 3 is the bottom wall of the reaction chamber 2 and the separation layer 5, and hot air after combustion enters the flue gas chamber from the communication port 51 arranged on the separation layer 5, and is discharged from the exhaust port 31 to enter an exhaust system after the reaction chamber is heated from the bottom.
As shown in FIG. 3, the communication port 51 of the separation layer 5 is disposed at the position opposite to the burner tip of the separation layer, and the hot gas flows from one end to the other end above the reaction chamber and then from one end to the other end below the reaction chamber, so that the hot gas flows into contact with the outer wall of the reaction chamber for a longer time, thereby increasing the heat exchange time and facilitating the sufficient heat exchange.
The communicating holes are only arranged at the opposite positions of the combustion nozzles of the separating layers, so that the problem that hot air flows to the flue gas chamber and the resistance is large can be solved, the flow of the air flow can be reduced, and the heat exchange quantity can also be reduced. To balance this contradiction, as shown in fig. 4, a plurality of communication ports are provided, and the communication port located farther from the burner tip has a larger total area than the communication port located closer to the burner tip.
The Mannheim reacting furnace is used in potassium sulfate production that this embodiment provided, because the hot gas flow after the burning passes through above the roof of reacting chamber earlier, makes the air current pass through below the diapire of reacting chamber again, on the one hand heats the reacting chamber simultaneously from top to bottom, has utilized the flue gas, has improved thermal utilization ratio, for upwards heating from the bottom in addition, the even degree of hot gas flow improves, is favorable to the reaction to fully go on.
It should be noted that, in order to make the main structure clear, the stirring device and the supporting structure of the reaction chamber are not shown in FIG. 1. The stirring device 6 and the reaction chamber support structure 7 are shown in the figure, with the illustration of the separation layer hidden. The stirring device 6 is an existing device. The supporting structure 7 adopts a supporting column and is arranged in the flue gas chamber, the upper part of the supporting structure supports the reaction chamber, and the lower part of the supporting structure is connected with the bottom of the outer wall of the furnace body shell. The bottom wall of the furnace body shell adopts a building structure and is poured by pouring materials at the upper part. The supporting structure 7 is built by refractory bricks, and in order to enable airflow to flow more smoothly in the flue gas chamber, the cross section of the supporting column can be circular or oval. In the case of an oval shape, the major axis of the oval is aligned with the main flow direction of the hot gas flow.
While the foregoing description shows and describes several preferred embodiments of the utility model, it is to be understood, as noted above, that the utility model is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (8)
1. The utility model provides a manheim reacting furnace is used in potassium sulphate production, includes the reaction chamber, the reaction chamber top sets up the combustion chamber, combustion chamber one side sets up the burner tip, a serial communication port, the reaction chamber below sets up the flue gas chamber, the reaction chamber with set up the separate layer between the flue gas chamber, the separate layer sets up the intercommunication mouth.
2. The Mannheim reaction furnace for the production of potassium sulfate according to claim 1, wherein said communication port is provided at a position opposite to the burner tip of the separation layer.
3. The Mannheim reaction furnace for the production of potassium sulfate according to claim 1, wherein the communication port is provided in a plurality, and the plurality of communication ports make the ventilation area of the separation layer at a position away from the burner larger than the area of the separation layer at a position close to the burner.
4. The Mannheim reaction furnace for the production of potassium sulfate according to claim 1, wherein the projection of said reaction chamber on the horizontal plane is circular and the projection on the vertical plane is elliptical.
5. The Mannheim reaction furnace for the production of potassium sulfate according to claim 3, wherein a feed opening is provided at the upper part of the reaction chamber, the feed opening is connected with a feed pipe, and the feed pipe passes through the combustion chamber upward and is exposed out of the furnace body shell.
6. The Mannheim reaction furnace for the production of potassium sulfate according to claim 1, wherein an outlet is further provided at the upper part of the reaction chamber, and the outlet is connected to an outlet pipe which passes through the combustion chamber 1 obliquely upward and is exposed from the furnace body shell 4 for discharging HCL gas.
7. The Mannheim reaction furnace for the production of potassium sulfate according to claim 2, wherein the wall of the reaction chamber is connected to the furnace body shell near the center line of the side part, and a discharge port is provided at one side of the reaction chamber and penetrates through the wall of the reaction chamber, which is the inner wall of the furnace body shell.
8. The Mannheim reaction furnace for the production of potassium sulfate according to any one of claims 1 to 7, wherein a support structure is arranged below the reaction chamber, and the support structure is a support column, and the cross section of the support column is circular or elliptical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122322726.5U CN215855142U (en) | 2021-09-25 | 2021-09-25 | Mannheim reaction furnace for potassium sulfate production |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122322726.5U CN215855142U (en) | 2021-09-25 | 2021-09-25 | Mannheim reaction furnace for potassium sulfate production |
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| CN215855142U true CN215855142U (en) | 2022-02-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023180526A1 (en) * | 2022-03-25 | 2023-09-28 | Tessenderlo Group Nv | Methods for the production of sulfate salts and furnace suitable for use in these methods |
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- 2021-09-25 CN CN202122322726.5U patent/CN215855142U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023180526A1 (en) * | 2022-03-25 | 2023-09-28 | Tessenderlo Group Nv | Methods for the production of sulfate salts and furnace suitable for use in these methods |
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