A clean and energy-saving yellow phosphorus tail gas boiler

Abstract

The utility model relates to a clean and energy -conserving yellow phosphorus tail gas boiler, install the blowdown mouth right side of horizontal heat exchanger, fixedly link together with third pipe above horizontal heat exchanger, this clean and energy -conserving yellow phosphorus tail gas boiler, make second pipeline bottom and first elastic rubber ring abut tightly with rotating into the mounting plate and horizontal heat exchanger of multiple first bolts, thereby completed the installation work of horizontal heat exchanger and vertical heat exchanger, to realize horizontal heat exchanger and vertical heat exchanger upside -down stacking, can reduce the land area of equipment whole, the operator passes through first flange and second flange with multiple second bolts, finally tightens multiple nuts, makes the ring with second elastic rubber circle abut tightly, to realize the filter screen can carry out the filtration to the fine particle in yellow phosphorus tail gas, plays the role of pretreatment, reduces the situation of second pipeline and exhaust pipe blockage in the subsequent emission process, to a certain extent, can improve the cleaning performance of equipment.

Description

Technical Field

[0001] This utility model relates to the field of yellow phosphorus tail gas boiler technology, and in particular to a clean and energy-saving yellow phosphorus tail gas boiler. Background Technology

[0002] Yellow phosphorus tail gas refers to the waste gas emitted during the production or use of yellow phosphorus, which contains a variety of chemical substances. The main components include sulfur dioxide, hydrogen sulfide, phosphoric acid, and phosphate esters. Yellow phosphorus tail gas boilers convert the chemical energy of these tail gases into heat energy by burning them, thereby producing steam or hot water and realizing the recovery and utilization of heat energy.

[0003] For example, a clean and energy-saving yellow phosphorus tail gas boiler with announcement number CN222278545U adopts a two-stage heat exchange system. A vertical heat exchanger is installed in the low-temperature section of the combustion tail gas to preheat the boiler's soft water. After the soft water temperature is increased, it is pumped into a high-temperature horizontal heat exchanger to generate high-temperature steam, thus improving the thermal efficiency of the yellow phosphorus tail gas. However, this boiler uses a structure where the combustion chamber, horizontal heat exchanger, and vertical heat exchanger are connected in series. The layout of each component requires a certain amount of space, resulting in a large overall footprint. Furthermore, while a collection pool is installed at the bottom of the vertical heat exchanger to settle acidic sludge and other impurities in the yellow phosphorus tail gas, some fine particles may still not completely settle. These substances may adhere to the surface of the heat exchange tubes or enter the flue, reducing the cleanliness of the equipment. Summary of the Invention

[0004] This utility model aims to solve the problems existing in the prior art and provides a clean and energy-saving yellow phosphorus tail gas boiler. The vertical heat exchanger and the horizontal heat exchanger are stacked one on top of the other to save the overall footprint of the equipment. The filter screen filters out fine smoke and dust particles in the flue gas, reducing pollution to the flue and improving the cleanliness of the equipment.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: This clean and energy-saving yellow phosphorus tail gas boiler includes a base and support legs. Multiple support legs are fixedly connected to the top of the base. Each support leg is fixedly connected to a vertical heat exchanger. An installation structure is provided on the top of the vertical heat exchanger. A water inlet is fixedly connected to the lower left side of the vertical heat exchanger. A drain outlet is fixedly connected to the upper right side of the vertical heat exchanger. A horizontal heat exchanger is provided on the top of the vertical heat exchanger. A sewage outlet is installed on the right side of the horizontal heat exchanger. A third pipe is fixedly connected to the top of the horizontal heat exchanger.

[0006] To further improve the design, the left side of the horizontal heat exchanger is fixedly connected to a first pipe, and a pretreatment structure is provided on the left side of the first pipe.

[0007] Further improvements are made to the installation structure, which includes mounting plates, cylinders, and a second pipe. The inner sides of both mounting plates are fixedly connected to the vertical heat exchanger. The inner walls of the mounting plates and the inner walls of the horizontal heat exchanger are threadedly connected to the first bolts. The outer walls of the multiple cylinders are inserted into the vertical heat exchanger. The upper ends of the cylinders are fixedly connected to the horizontal heat exchanger. The upper part of the second pipe is fixedly connected to the horizontal heat exchanger.

[0008] Further improvements include that the lower part of the second pipe abuts against the first elastic rubber ring, and the outer wall of the first elastic rubber ring is fixedly connected to the vertical heat exchanger.

[0009] Further improvements include a first flange and a second flange. The inner walls of both the first and second flanges are inserted into a second bolt. The outer wall of the second bolt is threadedly connected to a nut. The inner walls of both the first and second flanges are inserted into a plug ring. The outer wall of the plug ring is pressed against a second elastic rubber ring. The outer wall of the second elastic rubber ring is fixedly connected to the first and second flanges respectively. The inner side of the plug ring is fixedly connected to a filter screen.

[0010] Further improvements include a second flange with its left side fixedly connected to the air intake pipe and a first flange with its right side fixedly connected to the first pipe.

[0011] To further improve the design, a collection tank is installed below the vertical heat exchanger, and an exhaust pipe is installed on the right side of the collection tank.

[0012] The beneficial effects of this utility model are as follows: This utility model, through the cooperation of a horizontal heat exchanger, a vertical heat exchanger and an installation structure, inserts multiple cylinders and a second pipe on the horizontal heat exchanger into the vertical heat exchanger, and then screws multiple first bolts into the mounting plate and the horizontal heat exchanger, so that the bottom of the second pipe abuts against the first elastic rubber ring, thereby completing the installation of the horizontal heat exchanger and the vertical heat exchanger, so that the horizontal heat exchanger and the vertical heat exchanger can be stacked one on top of the other, which can reduce the overall footprint of the equipment.

[0013] By coordinating the first pipe, the intake pipe, and the pretreatment structure, the insert ring is inserted into the first flange. Then, the operator places the second flange onto the insert ring on the other side, aligning the multiple threaded holes on the first and second flanges. The operator then passes multiple second bolts through the first and second flanges, and finally tightens multiple nuts, ensuring that the insert rings are all pressed against the second elastic rubber rings. This completes the fixing of the filter screen, enabling it to filter fine particles in the yellow phosphorus exhaust gas, thus playing a pretreatment role. In the subsequent emission process, this reduces the likelihood of blockage in the second pipe and the exhaust pipe, and to a certain extent, improves the cleanliness of the equipment. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 for Figure 1 A partial front sectional view;

[0016] Figure 3 for Figure 2 A magnified view of part A in the diagram;

[0017] Figure 4 for Figure 2 A magnified view of part B in the diagram;

[0018] Figure 5 for Figure 3 A magnified view of part of C;

[0019] Figure 6 for Figure 3 Partial 3D schematic diagram;

[0020] Figure 7 for Figure 6 The right view.

[0021] Explanation of reference numerals in the attached drawings: 1. Base; 2. Support leg; 3. Mounting structure; 301. Mounting plate; 302. First bolt; 303. Cylindrical column; 304. Second pipe; 305. First elastic rubber ring; 4. First pipe; 5. Air inlet pipe; 6. Pretreatment structure; 601. First flange; 602. Second flange; 603. Second bolt; 604. Nut; 605. Filter screen; 606. Insert ring; 607. Second elastic rubber ring; 7. Horizontal heat exchanger; 8. Third pipe; 9. Drain outlet; 10. Drain outlet; 11. Vertical heat exchanger; 12. Support leg; 13. Exhaust pipe; 14. Collection tank. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] See attached document Figure 1-7 In this embodiment, a clean and energy-saving yellow phosphorus tail gas boiler includes a base 1 and support legs 12. Multiple support legs 12 are fixedly connected to the top of the base 1, and each support leg 12 is fixedly connected to a vertical heat exchanger 11. An installation structure 3 is provided above the vertical heat exchanger. A water inlet 2 is fixedly connected to the lower left side of the vertical heat exchanger 11, and a drain outlet 10 is fixedly connected to the upper right side of the vertical heat exchanger 11. A horizontal heat exchanger 7 is provided above the vertical heat exchanger 11, and a drain outlet 9 is installed on the right side of the horizontal heat exchanger 7. A third pipe 8 is fixedly connected to the top of the horizontal heat exchanger 7.

[0024] The horizontal heat exchanger 7 is fixedly connected to the first pipe 4 on the left side. The horizontal heat exchanger 7 is a BR0.28-1.6-20-E-I heat exchanger. The first pipe 4 is provided with a pretreatment structure 6 on the left side. The second pipe 304 is pressed against the first elastic rubber ring 305 below. The outer wall of the first elastic rubber ring 305 is fixedly connected to the vertical heat exchanger 11. The vertical heat exchanger 11 is a FL-BAPT heat exchanger. The second flange 602 is fixedly connected to the air inlet pipe 5 on the left side. The first flange 601 is fixedly connected to the first pipe 4 on the right side. A collection tank 14 is installed below the vertical heat exchanger 11. An exhaust pipe 13 is installed on the right side of the collection tank 14.

[0025] The mounting structure 3 includes a mounting plate 301, a cylinder 303, and a second pipe 304. The inner sides of both mounting plates 301 are fixedly connected to the vertical heat exchanger 11. The inner walls of the mounting plates 301 and the inner walls of the horizontal heat exchanger 7 are threadedly connected to the first bolt 302. The outer walls of the multiple cylinders 303 are inserted into the vertical heat exchanger 11. The upper ends of the cylinders 303 are fixedly connected to the horizontal heat exchanger 7. The upper part of the second pipe 304 is fixedly connected to the horizontal heat exchanger 7.

[0026] The pretreatment structure 6 includes a first flange 601 and a second flange 602. The inner walls of both the first flange 601 and the second flange 602 are inserted into a second bolt 603. The outer wall of the second bolt 603 is threadedly connected to a nut 604. The inner walls of both the first flange 601 and the second flange 602 are inserted into a plug ring 606. The outer wall of the plug ring 606 is pressed against a second elastic rubber ring 607. The outer wall of the second elastic rubber ring 607 is fixedly connected to the first flange 601 and the second flange 602 respectively. The inner side of the plug ring 606 is fixedly connected to a filter screen 605.

[0027] Working principle:

[0028] When using a clean and energy-saving yellow phosphorus tail gas boiler:

[0029] Multiple cylinders 303 and second pipes 304 on the horizontal heat exchanger 7 are inserted into the vertical heat exchanger 11. Then, multiple first bolts 302 are screwed into the mounting plate 301 and the horizontal heat exchanger 7 (the vertical heat exchanger 11 and the horizontal heat exchanger 7 are the main structures of the boiler), so that the bottom of the second pipe 304 abuts against the first elastic rubber ring 305. This completes the installation of the horizontal heat exchanger 7 and the vertical heat exchanger 11, so that the horizontal heat exchanger 7 and the vertical heat exchanger 11 can be stacked up and down, which can reduce the overall footprint of the equipment.

[0030] The operator inserts the insert ring 606 into the first flange 601, then places the second flange 602 onto the insert ring 606 on the other side, aligning the multiple threaded holes on the first flange 601 and the second flange 602. The operator then passes multiple second bolts 603 through the first flange 601 and the second flange 602, and finally tightens multiple nuts 604, ensuring that the insert ring 606 is firmly against the second elastic rubber ring 607. This completes the fixing of the filter screen 605. The high-temperature yellow phosphorus exhaust gas from the combustion chamber then enters through the intake pipe 5. Passing through the filter screen 605, the filter screen 605 filters out fine particles in the yellow phosphorus exhaust gas, acting as a pretreatment. This reduces the likelihood of blockage in the second pipe 304 and the exhaust pipe 13 during subsequent emissions, thus improving the equipment's cleanliness to a certain extent.

[0031] The yellow phosphorus tail gas enters the tube side of the horizontal heat exchanger 7 through the filter screen 605 and the first pipe 4. In the tube side of the horizontal heat exchanger 7, it exchanges heat with the water in the shell side of the horizontal heat exchanger 7, transferring heat to the water in the shell side of the horizontal heat exchanger 7, causing the water to boil and generate high-temperature steam. The high-temperature steam is discharged from the third pipe 8 and can be collected and utilized. Then, the remaining high-temperature yellow phosphorus tail gas enters the tube side of the vertical heat exchanger 3 through the second pipe 304, preheating the water in the shell side of the vertical heat exchanger 3, which can be reused. The temperature of the yellow phosphorus tail gas decreases, causing the acid-containing sludge in the yellow phosphorus tail gas to settle at low temperature and fall into the collection tank 14. Finally, the yellow phosphorus tail gas enters the tail gas treatment device from the exhaust pipe 13 for treatment before being discharged.

[0032] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A clean and energy-saving yellow phosphorus tail gas boiler, comprising a base (1) and supporting legs (12), wherein multiple supporting legs (12) are fixedly connected above the base (1), characterized in that: The supporting legs (12) are all fixedly connected to the vertical heat exchanger (11). The vertical heat exchanger (11) is provided with an installation structure (3) on top. The vertical heat exchanger (11) is fixedly connected to the lower left side with a water inlet (2). The vertical heat exchanger (11) is fixedly connected to the upper right side with a drain outlet (10). The vertical heat exchanger (11) is provided with a horizontal heat exchanger (7) on top. The horizontal heat exchanger (7) is installed with a drain outlet (9) on the right side. The horizontal heat exchanger (7) is fixedly connected to a third pipe (8).

2. The clean and energy-saving yellow phosphorus tail gas boiler according to claim 1, characterized in that: The horizontal heat exchanger (7) is fixedly connected to the first pipe (4) on the left side, and a pretreatment structure (6) is provided on the left side of the first pipe (4).

3. The clean and energy-saving yellow phosphorus tail gas boiler according to claim 1, characterized in that: The installation structure (3) includes an installation plate (301), a cylinder (303), and a second pipe (304). The inner sides of the two installation plates (301) are fixedly connected to the vertical heat exchanger (11). The inner walls of the installation plates (301) and the inner walls of the horizontal heat exchanger (7) are threadedly connected to the first bolt (302). The outer walls of the multiple cylinders (303) are inserted into the vertical heat exchanger (11). The upper ends of the cylinders (303) are fixedly connected to the horizontal heat exchanger (7). The upper part of the second pipe (304) is fixedly connected to the horizontal heat exchanger (7).

4. The clean and energy-saving yellow phosphorus tail gas boiler according to claim 3, characterized in that: The second pipe (304) is pressed against the first elastic rubber ring (305) below, and the outer wall of the first elastic rubber ring (305) is fixedly connected to the vertical heat exchanger (11).

5. The clean and energy-saving yellow phosphorus tail gas boiler according to claim 2, characterized in that: The pretreatment structure (6) includes a first flange (601) and a second flange (602). The inner walls of the first flange (601) and the second flange (602) are both inserted into a second bolt (603). The outer wall of the second bolt (603) is threadedly connected to a nut (604). The inner walls of the first flange (601) and the second flange (602) are both inserted into a plug ring (606). The outer wall of the plug ring (606) is abutted against a second elastic rubber ring (607). The outer wall of the second elastic rubber ring (607) is fixedly connected to the first flange (601) and the second flange (602) respectively. The inner side of the plug ring (606) is fixedly connected to a filter screen (605).

6. The clean and energy-saving yellow phosphorus tail gas boiler according to claim 5, characterized in that: The second flange (602) is fixedly connected to the air inlet pipe (5) on the left side, and the first flange (601) is fixedly connected to the first pipe (4) on the right side.

7. The clean and energy-saving yellow phosphorus tail gas boiler according to claim 1, characterized in that: A collection tank (14) is installed below the vertical heat exchanger (11), and an exhaust pipe (13) is installed on the right side of the collection tank (14).

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