Sintering desulfurization tower

Abstract

The utility model belongs to the technical field of desulfurization tower discloses a kind of sintering desulfurization tower, including desulfurization tower body, its lower end one side outer wall is fixedly installed with flue gas inlet, the desulfurization tower body top is fixedly installed with flue gas outlet, the desulfurization tower body lower cone part outer wall is around with steam pipe, the fixed ring inside is fixedly installed with heat exchange pipe, the steam pipe upper end is fixedly connected with heat exchange pipe lower end, heat exchange pipe upper end extends out desulfurization tower body inside, the utility model proposes a kind of sintering desulfurization tower, sintering flue gas enters desulfurization tower body inside by flue gas inlet, high-temperature steam enters heat exchange pipe inside by steam pipe, since steam pipe is around with the outer wall of desulfurization tower body lower cone, to heat desulfurization tower body, on the other hand, steam after heating desulfurization tower body enters heat exchange pipe inside, since heat exchange pipe is arranged in desulfurization tower body inside, flue gas can directly contact heat exchange with heat exchange pipe, and heating effect is improved by setting multiple heating modes.

Description

Technical Field

[0001] This utility model belongs to the field of desulfurization tower technology, specifically a sintering desulfurization tower. Background Technology

[0002] Sintering flue gas is characterized by large volume, significant temperature fluctuations, and high dust concentration, posing numerous challenges to the desulfurization process. To ensure desulfurization efficiency and stable equipment operation, steam tracing technology will be widely applied in sintering desulfurization towers in the future. With rising energy costs and stricter environmental requirements, steam tracing technology at the bottom of sintering desulfurization towers will place greater emphasis on high efficiency and energy saving. Steam tracing refers to the process of using steam as a heat source to transfer heat to the object or medium requiring heating. Steam can provide thermal energy under high temperature and pressure, and it has high heat transfer efficiency to meet the heating requirements of the low outlet temperature of the desulfurization tower. Existing steam tracing technologies generally involve setting up steam channels in the jacket of the desulfurization tower, injecting high-temperature and high-pressure steam into the steam channels to increase the overall temperature of the desulfurization tower. In this type of distillation tower, the contact area between steam and the tower wall is limited, resulting in a low heat exchange rate. To address these issues, a new type of sintering desulfurization tower is proposed.

[0003] Application content

[0004] The purpose of this utility model is to solve the above problems by providing a sintering desulfurization tower, comprising:

[0005] The desulfurization tower body has a flue gas inlet fixedly installed on one side of its lower end outer wall, a flue gas outlet fixedly installed on the top of the desulfurization tower body, a steam pipe wrapped around the outer wall of the lower cone of the desulfurization tower body, and multiple fixing rings fixedly installed on the inner wall of the desulfurization tower body. A heat exchange tube is fixedly installed inside the fixing rings. The upper end of the steam pipe is fixedly connected to the lower end of the heat exchange tube, and the upper end of the heat exchange tube extends out of the interior of the desulfurization tower body.

[0006] Through the above technical solution, sintering flue gas enters the desulfurization tower body through the flue gas inlet, and high-temperature steam enters the heat exchange tube through the steam pipe. Since the steam pipe is arranged around the outer wall of the lower cone of the desulfurization tower body, it heats the desulfurization tower body. On the other hand, the steam after heating the desulfurization tower body enters the heat exchange tube. Since the heat exchange tube is set inside the desulfurization tower body, the flue gas can directly contact the heat exchange tube for heat exchange. By setting multiple heating methods, the heat tracing effect is improved.

[0007] In a preferred embodiment, a solenoid valve is fixedly installed on the upper outer wall of the heat exchange tube, and multiple vent holes are opened on the lower outer wall of the heat exchange tube. Slide rails are fixedly installed on both the left and right sides of the inner wall of the desulfurization tower body. An electric slider is slidably connected to the outer wall of the slide rail. A connecting rod is fixedly installed on one side of the electric slider, and a sealing ring is fixedly installed on one side of the connecting rod. The sealing ring is slidably connected to the lower end of the heat exchange tube.

[0008] With the above technical solution, when the desulfurization tower is performing dry desulfurization, the electric slider drives the slide rail to move, thereby moving the sealing tube to the vent hole, thus sealing the heat exchange tube, so that the desulfurization tower can perform dry desulfurization. When the desulfurization tower is performing wet desulfurization, the solenoid valve is closed first, and the electric slider drives the slide rail to move, thereby moving the sealing tube away from the vent hole, and the high-temperature steam in the heat exchange tube is discharged through the vent hole and comes into contact with the flue gas.

[0009] In a preferred embodiment, a flow meter and a thermometer are fixedly installed on the outer wall of the steam pipe.

[0010] In a preferred embodiment, the radius of the heat exchange tube gradually decreases from the top and bottom ends towards the middle.

[0011] Through the above technical solution, when high-pressure steam passes through the heat exchange tube, the radius of the tube decreases in the middle. According to Bernoulli's equation, if the height change is negligible during the fluid flow along the pipe, the fluid velocity will increase when passing through a region with a smaller cross-section, thereby increasing the steam velocity and improving the heat exchange effect.

[0012] In a preferred embodiment, a fixing frame is fixedly installed on the lower end of the outer wall of the desulfurization tower body.

[0013] In a preferred embodiment, a steam trap is fixedly installed at the end of the steam pipe.

[0014] The above technical solution ensures that condensate can be drained in a timely manner by setting up a steam trap, thus avoiding unnecessary burden on the system.

[0015] In a preferred embodiment, the steam pipe is arranged three times around the lower conical part of the desulfurization tower body, with a spacing of 0.6m between each turn.

[0016] In summary, due to the adoption of the above technical solutions, the beneficial effects of this utility model are: this utility model proposes a sintering desulfurization tower.

[0017] 1. Sintering flue gas enters the desulfurization tower body through the flue gas inlet, and high-temperature steam enters the heat exchange tube through the steam pipe. Since the steam pipe is wrapped around the outer wall of the lower cone of the desulfurization tower body, it heats the desulfurization tower body. On the other hand, the steam after heating the desulfurization tower body enters the heat exchange tube. Since the heat exchange tube is set inside the desulfurization tower body, the flue gas can directly contact the heat exchange tube for heat exchange. The heat tracing effect is improved by setting multiple heating methods.

[0018] 2. When the desulfurization tower is used for dry desulfurization, the electric slider drives the slide rail to move, thereby moving the sealing tube to the vent hole and sealing the heat exchange tube, thus enabling the desulfurization tower to perform dry desulfurization. When the desulfurization tower is used for wet desulfurization, the solenoid valve is closed first, and the electric slider drives the slide rail to move, thereby moving the sealing tube away from the vent hole. The high-temperature steam in the heat exchange tube is discharged through the vent hole and comes into contact with the flue gas, so that the desulfurization tower can meet different process requirements. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This utility model Figure 1 Enlarged view of A in the middle;

[0021] Figure 3 This is a cross-sectional view of the present invention;

[0022] Figure 4 This utility model Figure 2 A magnified view of B in the middle.

[0023] The markings in the diagram are: 1-Desulfurization tower body; 2-Flue gas inlet; 3-Flue gas outlet; 4-Steam pipe; 5-Heat exchange pipe; 6-Flow meter; 7-Thermometer; 8-Fixing ring; 9-Solenoid valve; 10-Slide rail; 11-Electric slider; 12-Connecting rod; 13-Sealing ring; 14-Ventilation hole; 15-Drainage device; 16-Fixing frame. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] The following will combine Figure 1-4 A sintering desulfurization tower according to an embodiment of the present invention will be described in detail.

[0026] Example:

[0027] A sintering desulfurization tower, comprising:

[0028] The desulfurization tower body 1 has a flue gas inlet 2 fixedly installed on the outer wall of one side at its lower end, a flue gas outlet 3 fixedly installed on the top of the desulfurization tower body 1, a fixing frame 16 fixedly installed at the lower end of the outer wall of the desulfurization tower body 1, and a steam pipe 4 wrapped around the outer wall of the lower cone of the desulfurization tower body 1. A steam trap 15 is fixedly installed at the end of the steam pipe 4 to ensure that condensate can be discharged in time and avoid unnecessary burden on the system. The steam pipe 4 is wrapped around the lower cone of the desulfurization tower body 1 three times, with a spacing of 0.6m between each turn. Sintering flue gas enters the interior of the desulfurization tower body 1 through the flue gas inlet 2, and high-temperature steam enters the interior of the heat exchange tube 5 through the steam pipe 4. Since the steam pipe 4 is wrapped around the outer wall of the lower cone of the desulfurization tower body 1, it heats the desulfurization tower body 1.

[0029] A flow meter 6 and a thermometer 7 are fixedly installed on the outer wall of the steam pipe 4. Multiple fixing rings 8 are fixedly installed on the inner wall of the desulfurization tower body 1. Heat exchange tubes 5 are fixedly installed inside the fixing rings 8. The radius of the heat exchange tubes 5 gradually decreases from the top and bottom to the middle. When high-pressure steam passes through the heat exchange tubes 5, due to the reduced radius in the middle of the tubes, according to Bernoulli's equation, if the height change is negligible, the fluid velocity will increase when passing through a smaller cross-section area, thus increasing the steam velocity. To improve heat exchange efficiency, the upper end of the steam pipe 4 is fixedly connected to the lower end of the heat exchange tubes 5. The upper end of the heat exchange tubes 5 extends out of the desulfurization tower body 1. Steam heated by the desulfurization tower body 1 enters the heat exchange tubes 5. Since the heat exchange tubes 5 are located inside the desulfurization tower body 1, the flue gas can directly contact the heat exchange tubes 5 for heat exchange. The heat tracing effect is improved by setting up multiple heating methods.

[0030] A solenoid valve 9 is fixedly installed on the upper outer wall of the heat exchange tube 5, and multiple vent holes 14 are opened on the lower outer wall of the heat exchange tube 5. Slide rails 10 are fixedly installed on both the left and right sides of the inner wall of the desulfurization tower body 1. An electric slider 11 is slidably connected to the outer wall of the slide rail 10. A connecting rod 12 is fixedly installed on one side of the electric slider 11, and a sealing ring 13 is fixedly installed on one side of the connecting rod 12. The sealing ring 13 is slidably connected to the lower end of the heat exchange tube 5. When the desulfurization tower is performing dry desulfurization, the electric slider 11 drives the slide rail 10 to move, thereby moving the sealing tube 13 to the vent hole 14, thereby sealing the heat exchange tube 5, so that the desulfurization tower can perform dry desulfurization. When the desulfurization tower is performing wet desulfurization, the solenoid valve 9 is closed first, and the electric slider 11 drives the slide rail 10 to move, thereby moving the sealing tube 13 away from the vent hole 14, and the high-temperature steam in the heat exchange tube 5 is discharged through the vent hole 14 and comes into contact with the flue gas.

[0031] Working principle:

[0032] Sintering flue gas enters the desulfurization tower body 1 through flue gas inlet 2, and high-temperature steam enters the heat exchange tube 5 through steam pipe 4. Since steam pipe 4 is arranged around the outer wall of the lower cone of desulfurization tower body 1, it heats desulfurization tower body 1. On the other hand, the steam after heating desulfurization tower body 1 enters the heat exchange tube 5. Since heat exchange tube 5 is set inside desulfurization tower body 1, flue gas can directly contact heat exchange tube 5 for heat exchange. By setting multiple heating methods, the heat tracing effect is improved.

[0033] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sintering desulfurization tower, characterized in that: include: The desulfurization tower body (1) has a flue gas inlet (2) fixedly installed on the outer wall of one side of its lower end. The desulfurization tower body (1) has a flue gas outlet (3) fixedly installed on the top. The outer wall of the lower cone of the desulfurization tower body (1) is surrounded by a steam pipe (4). Multiple fixing rings (8) are fixedly installed on the inner wall of the desulfurization tower body (1). A heat exchange tube (5) is fixedly installed inside the fixing ring (8). The upper end of the steam pipe (4) is fixedly connected to the lower end of the heat exchange tube (5). The upper end of the heat exchange tube (5) extends out of the interior of the desulfurization tower body (1).

2. The sintering desulfurization tower as described in claim 1, characterized in that: A solenoid valve (9) is fixedly installed on the upper outer wall of the heat exchange tube (5). Multiple vent holes (14) are opened on the lower outer wall of the heat exchange tube (5). Slide rails (10) are fixedly installed on both the left and right sides of the inner wall of the desulfurization tower body (1). An electric slider (11) is slidably connected to the outer wall of the slide rail (10). A connecting rod (12) is fixedly installed on one side of the electric slider (11). A sealing ring (13) is fixedly installed on one side of the connecting rod (12). The sealing ring (13) is slidably connected to the lower end of the heat exchange tube (5).

3. A sintering desulfurization tower as described in claim 1, characterized in that: A flow meter (6) and a thermometer (7) are fixedly installed on the outer wall of the steam pipe (4).

4. A sintering desulfurization tower as described in claim 1, characterized in that: The radius of the heat exchange tube (5) gradually decreases from the top and bottom ends toward the middle.

5. A sintering desulfurization tower as described in claim 1, characterized in that: A fixing frame (16) is fixedly installed on the lower end of the outer wall of the desulfurization tower body (1).

6. A sintering desulfurization tower as described in claim 1, characterized in that: A steam trap (15) is fixedly installed at the end of the steam pipe (4).

7. A sintering desulfurization tower as described in claim 1, characterized in that: The steam pipe (4) is wound around the lower conical part of the desulfurization tower body (1) three times, with a spacing of 0.6m between each turn.

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