Raw material preheating device for sulfuric acid production

Abstract

The utility model relates to the technical field of preheating of raw materials for sulfuric acid production, and discloses a raw material preheating device for sulfuric acid production, which comprises a heat exchange preheating assembly and is characterized by further comprising an exhaust assembly and an air inlet assembly, an exhaust assembly and an air inlet assembly are arranged on the two sides of the heat exchange preheating assembly correspondingly, and the exhaust assembly and the air inlet assembly are connected with the output end and the input end of the heat exchange preheating assembly in a sealed mode. According to the raw material preheating device for sulfuric acid production, the flat and rounded vent holes are formed in the vent pipeline and matched with the heat conduction fins to conduct heat, so that the gas preheating speed is greatly increased, and the gas circulation amount in unit time is increased, and the problems that an existing raw material preheating device for sulfuric acid production is large in gas resistance due to bent gas channels of common sulfur dioxide preheating devices; the preheating ventilation amount of the sulfur dioxide gas is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of raw material preheating for sulfuric acid production, and particularly relates to a raw material preheating device for sulfuric acid production. Background Art

[0002] In sulfuric acid production, sulfur dioxide gas is usually generated by burning sulfur ore or coke. During transportation, the gas needs to be preheated to keep it in a gaseous state for subsequent treatment and utilization. Gas preheating is achieved by heating the sulfur dioxide gas with a heating device to a certain temperature to prevent condensation or dew formation. This can be achieved through a heat exchanger or similar equipment, whose working principle is to exchange heat between the cooled gas and a heat source to increase the gas temperature. During gas preheating, the gas resistance in the gas pipeline is an important issue. During gas transportation, the gas flow in the pipeline is hindered by the frictional force of the pipeline wall and the internal structure of the pipeline itself, resulting in a slow ventilation speed. Especially in gas preheating equipment, the gas needs to obtain sufficient temperature increase in a short time, and the decrease in speed will lead to poor preheating effect, affecting the stability and efficiency of the entire production process. Content of the Utility Model

[0003] In order to overcome the problem that in the existing raw material preheating device for sulfuric acid production, due to the large gas resistance caused by the bending of the air ducts in general sulfur dioxide preheating devices, the ventilation volume of sulfur dioxide gas preheating is low.

[0004] The technical solution of the utility model is: a raw material preheating device for sulfuric acid production, which includes a heat exchange and preheating component, and also includes an exhaust component and an intake component; the exhaust component and the intake component are respectively arranged on both sides of the heat exchange and preheating component, and the exhaust component and the intake component are hermetically connected to the output end and the input end of the heat exchange and preheating component. The dense heat-conducting fins are arranged to greatly increase the heat exchange area, and thus greatly increase the heat capture speed of the heat source, so as to meet the requirement that the flat-round ventilation holes can also quickly conduct heat to heat the gas; the heat exchange and preheating component includes a heat exchanger housing, a ventilation pipe, heat-conducting fins, and ventilation holes; a ventilation pipe is arranged inside the heat exchanger housing, and the ventilation pipes are arranged vertically at intervals and integrally formed with the heat exchanger housing; heat-conducting fins are arranged between adjacent upper and lower ventilation pipes, and the heat-conducting fins are fixedly connected to the outer wall of the ventilation pipe. When the heat source passes through the heat-conducting fins, the heat source heats the heat-conducting fins, and the heat-conducting fins then conduct the heat to the ventilation pipe; ventilation holes are arranged inside the ventilation pipe, and the ventilation holes are communicated with the ventilation pipe. Due to the design of the ventilation holes as flat and straight channels, while the sulfur dioxide is heated, the gas resistance is greatly reduced, effectively preventing the problem of the decrease in ventilation speed.

[0005] Preferably, through the ventilation holes with flat rounded corners inside the ventilation pipe, combined with the conduction of heat by the heat-conducting fins, the gas preheating speed is greatly increased and the gas flow rate per unit time is increased, solving the problem of the existing raw material preheating device for sulfuric acid production that the airway of the general sulfur dioxide preheating device is bent with a large air resistance, resulting in a low ventilation volume for sulfur dioxide gas preheating.

[0006] Preferably, the exhaust assembly includes an exhaust sealing cover and an exhaust pipe; an exhaust sealing cover is provided on one side of the heat exchanger housing, and the exhaust sealing cover is sealingly connected to the heat exchanger housing; an exhaust pipe is provided on the outside of the exhaust sealing cover, and the exhaust pipe is integrally formed with the exhaust sealing cover, and the exhaust pipe is used for discharging and collecting sulfur dioxide gas.

[0007] Preferably, the intake assembly includes an intake sealing cover and an intake pipe; an intake sealing cover is provided on the other side of the heat exchanger housing, and the intake sealing cover is sealingly connected to the heat exchanger housing, and the intake sealing cover effectively prevents gas from overflowing.

[0008] Preferably, an intake pipe is provided at one end of the outside of the intake sealing cover, and the intake pipe is integrally formed with the intake sealing cover, and the intake pipe is used for the entry of sulfur dioxide gas.

[0009] Advantages of the present utility model:

[0010] 1. For the existing raw material preheating device for sulfuric acid production, due to the large air resistance caused by the bent airway of the general sulfur dioxide preheating device, the problem of low ventilation volume for sulfur dioxide gas preheating occurs; first, connect the sulfur dioxide pipeline for preparing sulfuric acid to the intake pipe, then connect it to the exhaust pipe for collection with a pipeline, and then place the whole device in a heat source. The heat source can be a flowing liquid or a flowing gas heat source. When the heat source passes through the heat-conducting fins, the heat source heats the heat-conducting fins, and the heat-conducting fins then conduct the heat to the ventilation pipe. The heating of the ventilation pipe causes the gas inside the ventilation holes to be quickly heated. Since the design of the ventilation holes is a flat straight channel, while sulfur dioxide is being heated, the gas resistance is greatly reduced, effectively preventing the problem of the ventilation speed decreasing, and relying on the heat conduction of a large number of heat-conducting fins to achieve the function of quickly heating the gas. Finally, the heated sulfur dioxide gas is discharged and collected from the exhaust pipe; this solves the problem of the existing raw material preheating device for sulfuric acid production that the airway of the general sulfur dioxide preheating device is bent with a large air resistance, resulting in a low ventilation volume for sulfur dioxide gas preheating.

[0011] 2. Through the setting of the heat-conducting fins, the dense setting of the heat-conducting fins greatly increases the heat exchange area, and thus greatly increases the heat capture speed of the heat source, so as to meet the requirement that the flat rounded corner ventilation holes can also quickly conduct heat to heat the gas. Description of the Drawings

[0012] Figure 1The figure shows a schematic diagram of the overall three-dimensional structure of a raw material preheating device for sulfuric acid production according to the present utility model;

[0013] Figure 2 The figure shows a schematic diagram of the overall sectional three-dimensional structure of a raw material preheating device for sulfuric acid production according to the present utility model;

[0014] Figure 3 The figure shows a schematic diagram of the three-dimensional structure of the heat exchange and preheating component of a raw material preheating device for sulfuric acid production according to the present utility model;

[0015] Figure 4 The figure shows a schematic diagram of the side three-dimensional structure of the exhaust component and the intake component of a raw material preheating device for sulfuric acid production according to the present utility model.

[0016] The reference numerals in the drawings are: 1, heat exchange and preheating component; 2, exhaust component; 3, intake component; 101, heat exchanger housing; 102, ventilation pipe; 103, heat conducting fins; 104, ventilation holes; 201, exhaust sealing cover; 202, exhaust pipe; 301, intake sealing cover; 302, intake pipe. Detailed implementation manners

[0017] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0018] Please refer to Figures 1-4 , the present utility model provides an embodiment: a raw material preheating device for sulfuric acid production, which includes a heat exchange and preheating component 1, and also includes an exhaust component 2 and an intake component 3; the exhaust component 2 and the intake component 3 are respectively arranged on both sides of the heat exchange and preheating component 1, and the exhaust component 2 and the intake component 3 are hermetically connected to the output end and the input end of the heat exchange and preheating component 1.

[0019] Please refer to Figures 1-3 , in this embodiment, the heat exchange and preheating component 1 includes a heat exchanger housing 101, a ventilation pipe 102, heat conducting fins 103, and ventilation holes 104; a ventilation pipe 102 is arranged inside the heat exchanger housing 101, and the ventilation pipes 102 are arranged vertically at intervals, and the ventilation pipe 102 and the heat exchanger housing 101 are integrally formed.

[0020] Please refer to Figures 1-3 , in this embodiment, heat conducting fins 103 are arranged between the upper and lower adjacent ventilation pipes 102, and the heat conducting fins 103 are fixedly connected to the outer wall of the ventilation pipe 102.

[0021] Please refer to Figures 1-4, in this embodiment, ventilation holes 104 are provided inside the ventilation pipe 102, and the ventilation holes 104 are in through connection with the ventilation pipe 102. The exhaust assembly 2 includes an exhaust sealing cover 201 and an exhaust pipe 202. An exhaust sealing cover 201 is provided on one side of the heat exchanger housing 101, and the exhaust sealing cover 201 is sealingly connected to the heat exchanger housing 101. An exhaust pipe 202 is provided on the outer side of the exhaust sealing cover 201, and the exhaust pipe 202 is integrally formed with the exhaust sealing cover 201. The intake assembly 3 includes an intake sealing cover 301 and an intake pipe 302. An intake sealing cover 301 is provided on the other side of the heat exchanger housing 101, and the intake sealing cover 301 is sealingly connected to the heat exchanger housing 101. One end of the outer side of the intake sealing cover 301 is provided with an intake pipe 302, and the intake pipe 302 is integrally formed with the intake sealing cover 301.

[0022] When working, first connect the sulfur dioxide pipeline for preparing sulfuric acid to the intake pipe 302, and then connect it to the exhaust pipe 202 with a pipeline for collection. Then, place the whole device in a heat source. The heat source can be a flowing liquid or a flowing gas heat source. When the heat source passes through the heat conducting fins 103, the heat source heats the heat conducting fins 103, and the heat conducting fins 103 then conduct the heat to the ventilation pipe 102. The heating of the ventilation pipe 102 causes the gas inside the ventilation holes 104 to be quickly heated.

[0023] Next, since the ventilation holes 104 are designed as flat and straight channels, when sulfur dioxide is heated, the gas resistance is greatly reduced, effectively preventing the problem of the ventilation speed from decreasing, and relying on the heat conduction of a large number of heat conducting fins 103 to achieve the function of quickly heating the gas. Finally, the heated sulfur dioxide gas is discharged from the exhaust pipe 202 for collection, solving the problem that in the existing raw material preheating device for sulfuric acid production, due to the large air resistance caused by the bending of the airway in the general sulfur dioxide preheating device, the ventilation volume of the sulfur dioxide gas preheating is low.

[0024] Through the above steps, by setting the flat and rounded ventilation holes 104 inside the ventilation pipe 102 and cooperating with the heat conduction of the heat conducting fins 103, the gas preheating speed is greatly increased and the gas flow rate per unit time is increased, avoiding the problem that in the existing raw material preheating device for sulfuric acid production, due to the large air resistance caused by the bending of the airway in the general sulfur dioxide preheating device, the ventilation volume of the sulfur dioxide gas preheating is low.

[0025] The above has described in detail the embodiments of the present invention in conjunction with the drawings, but the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the present invention.

Claims

1. A raw material preheating device for sulfuric acid production, comprising a heat exchange and preheating assembly (1), characterized in that: It further includes an exhaust assembly (2) and an intake assembly (3); the exhaust assembly (2) and the intake assembly (3) are respectively arranged on both sides of the heat exchange and preheating assembly (1), and the exhaust assembly (2) and the intake assembly (3) are hermetically connected to the output end and the input end of the heat exchange and preheating assembly (1); the heat exchange and preheating assembly (1) includes a heat exchanger housing (101), a ventilation pipe (102), heat conducting fins (103), and ventilation holes (104); a ventilation pipe (102) is arranged inside the heat exchanger housing (101), and the ventilation pipes (102) are arranged vertically at intervals and integrally formed with the heat exchanger housing (101); heat conducting fins (103) are arranged between adjacent upper and lower ventilation pipes (102), and the heat conducting fins (103) are fixedly connected to the outer wall of the ventilation pipe (102); ventilation holes (104) are arranged inside the ventilation pipe (102), and the ventilation holes (104) are communicated with the ventilation pipe (102).

2. The raw material preheating device for sulfuric acid production according to claim 1, wherein: The exhaust assembly (2) includes an exhaust sealing cover (201) and an exhaust pipe (202); an exhaust sealing cover (201) is arranged on one side of the heat exchanger housing (101), and the exhaust sealing cover (201) is hermetically connected to the heat exchanger housing (101); an exhaust pipe (202) is arranged on the outer side of the exhaust sealing cover (201), and the exhaust pipe (202) is integrally formed with the exhaust sealing cover (201).

3. The raw material preheating device for sulfuric acid production according to claim 1, wherein: The intake assembly (3) includes an intake sealing cover (301) and an intake pipe (302); an intake sealing cover (301) is arranged on the other side of the heat exchanger housing (101), and the intake sealing cover (301) is hermetically connected to the heat exchanger housing (101).

4. The raw material preheating device for sulfuric acid production according to claim 3, characterized in that: An intake pipe (302) is arranged at one end of the outer side of the intake sealing cover (301), and the intake pipe (302) is integrally formed with the intake sealing cover (301).

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