A distillation column waste heat recovery device

Abstract

The utility model discloses a distillation column waste heat recovery device relates to distillation column technical field, include: distillation column, water tank and filter box, the distillation column top is provided with the waste heat recovery pipe, the waste heat recovery pipe bottom fixedly connected with the tee bend, the tee bend top fixedly connected with first heat pipe, the filter box is inside provided with filter plate, is provided with drying agent in the filter plate, the tee bend bottom fixedly connected with second heat pipe, the water tank is inside provided with first cavity and second cavity, is provided with heat conduction spare between first cavity and second cavity, first cavity one side fixedly connected with steam pipe. The utility model discloses a distillation column produces the waste heat for the recycling utilization in different places to this to satisfy different demands.

Description

Technical Field

[0001] This utility model relates to the field of distillation tower technology, specifically to a waste heat recovery device for distillation towers. Background Technology

[0002] Distillation towers are chemical equipment made of rare metal materials and their alloys. They are characterized by high strength, high toughness, high temperature resistance, corrosion resistance, and light weight, and are widely used in chemical and petrochemical fields. During the use of distillation towers, a large amount of high-temperature steam is generated. When the high-temperature steam is discharged, it is recovered and reused through a waste heat recovery device.

[0003] However, when existing technologies are used, the recovery of waste heat is mostly limited to one purpose and location, which cannot meet different needs. Utility Model Content

[0004] The purpose of this invention is to provide a waste heat recovery device for distillation towers to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A waste heat recovery device for a distillation column includes a distillation column, a water tank, and a filter box. A waste heat recovery pipe is installed at the top of the distillation column, and a three-way pipe is fixedly connected to the bottom end of the waste heat recovery pipe. A first heat outlet pipe is fixedly connected to the top end of the three-way pipe. A filter plate is installed inside the filter box, and a desiccant is installed inside the filter plate. A second heat outlet pipe is fixedly connected to the bottom end of the three-way pipe. A first cavity and a second cavity are installed inside the water tank. A heat-conducting component is installed between the first cavity and the second cavity. A steam pipe is fixedly connected to one side of the first cavity.

[0006] Preferably, the steam pipe is fixedly inserted through and extends into the interior of the distillation column.

[0007] Preferably, the bottom end of the first heat pipe is fixedly inserted through and extends into the interior of the filter box.

[0008] Preferably, one end of the second heat pipe is fixedly inserted through and extends into the interior of the second cavity.

[0009] Preferably, a water supply pipe is fixedly connected to the top of the first cavity, and a water supply valve is rotatably connected to the surface of the water supply pipe.

[0010] Preferably, an air outlet pipe is fixedly connected to one side of the filter box.

[0011] Compared with the prior art, the beneficial effects of this utility model are: In use, the hot gas generated by the distillation tower is transported to a three-way pipe through the waste heat recovery pipe at the top. Then, due to the inherent properties of the three-way pipe, it splits into two streams, one upward and one downward. The upward hot gas is transported to the filter box through the first heat outlet pipe. The hot gas in the filter box is filtered by the desiccant in the filter plate for dehumidification and is finally discharged through the gas outlet pipe, which can be connected to the heating pipe for heating. The downward hot gas is transported to the second chamber through the second heat outlet pipe, thereby heating the heat-conducting components. During heating, the water in the first chamber is also heated. The water vapor generated during heating can be transported back into the distillation tower through the steam pipe for recycling. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the water tank structure of this utility model; Figure 3 This is a front sectional view of the filter box structure of this utility model.

[0013] In the diagram: 1. Distillation column; 2. Water tank; 3. Filter box; 4. Waste heat recovery pipe; 5. T-shaped pipe; 6. First heat outlet pipe; 7. Second heat outlet pipe; 8. Gas outlet pipe; 9. Steam pipe; 10. Water supply pipe; 11. Water supply valve; 12. First cavity; 13. Second cavity; 14. Heat-conducting component; 15. Filter plate. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-3This utility model provides a technical solution: a waste heat recovery device for a distillation column, including a distillation column 1, a water tank 2, and a filter box 3. A waste heat recovery pipe 4 is provided at the top of the distillation column 1, and a three-way pipe 5 is fixedly connected to the bottom end of the waste heat recovery pipe 4. A first heat outlet pipe 6 is fixedly connected to the top end of the three-way pipe 5, and the bottom end of the first heat outlet pipe 6 is fixedly connected through and extends into the interior of the filter box 3. An exhaust pipe 8 is fixedly connected to one side of the filter box 3. A filter plate 15 is provided inside the filter box 3, and a desiccant is provided inside the filter plate 15. A second heat outlet pipe 7 is fixedly connected to the bottom end of the three-way pipe 5. A first cavity 12 and a second cavity 13 are provided inside the water tank 2. A heat-conducting component 14 is provided between the first cavity 12 and the second cavity 13. A steam pipe 9 is fixedly connected to one side of the first cavity 12, and the steam pipe 9 is fixedly connected through and extends into the interior of the distillation column 1. Extending into the interior of the distillation column 1, one end of the second heat outlet pipe 7 is fixedly inserted through and extends into the interior of the second cavity 13. When the distillation column 1 is in use, the generated hot gas is transported to the three-way pipe 5 through the waste heat recovery pipe 4 at the top. Then, due to the properties of the three-way pipe 5 itself, it is divided into two streams, one upward and one downward. The upward hot gas is transported to the filter box 3 through the first heat outlet pipe 6. The hot gas transported to the filter box 3 is filtered by the desiccant in the filter plate 15 for dehumidification and finally discharged through the gas outlet pipe 8. The gas outlet pipe 8 can be connected to the heating pipe for heating. The downward hot gas is transported to the second cavity 13 through the second heat outlet pipe 7, thereby heating the heat-conducting component 14. During heating, the water in the first cavity 12 is heated. The water vapor generated during heating can be transported to the interior of the distillation column 1 through the steam pipe 9 to achieve the purpose of recycling.

[0016] like Figure 1 and Figure 2 As shown, a water supply pipe 10 is fixedly connected to the top of the first cavity 12, and a water supply valve 11 is rotatably connected to the surface of the water supply pipe 10. The water supply valve 11 is used to open and close the water supply pipe 10, and the water supply pipe 10 is used to input water into the first cavity 12.

[0017] Working principle: When in use, open the water supply valve 11 and input water into the first chamber 12 through the water supply pipe 10. The input amount should be lower than the lowest position of the steam pipe 9. Then close the water supply valve 11. The hot gas generated in the distillation column 1 is transported to the three-way pipe 5 through the waste heat recovery pipe 4 at the top. Then, due to the properties of the three-way pipe 5, it splits into two streams, one upward and one downward. The upward hot gas is transported to the filter box 3 through the first heat outlet pipe 6. The hot gas in the filter box 3 is filtered by the desiccant in the filter plate 15 for dehumidification and is finally discharged through the gas outlet pipe 8. The gas outlet pipe 8 can be connected to the heating pipe for heating. The downward hot gas is transported to the second cavity 13 through the second heat outlet pipe 7, which can heat the heat-conducting element 14. During heating, the water in the first cavity 12 is heated. The water vapor generated during heating can be transported back to the inside of the distillation column 1 through the steam pipe 9 to achieve the purpose of recycling.

[0018] Through the above operations, the waste heat generated by distillation column 1 can be used in different ways and in different places to meet different needs.

[0019] The distillation column 1 and the heat-conducting component 14 in this application are commercially available devices known to those skilled in the art. We are simply using them here without making any structural or functional improvements, and will not elaborate further here.

[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, fabric, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, fabric, or apparatus.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waste heat recovery device for a distillation column, comprising a distillation column (1), a water tank (2), and a filter box (3), characterized in that: The distillation tower (1) is provided with a waste heat recovery pipe (4) at the top, and a three-way pipe (5) is fixedly connected to the bottom end of the waste heat recovery pipe (4). A first heat outlet pipe (6) is fixedly connected to the top end of the three-way pipe (5). A filter plate (15) is provided inside the filter box (3). A desiccant is provided inside the filter plate (15). A second heat outlet pipe (7) is fixedly connected to the bottom end of the three-way pipe (5). A first cavity (12) and a second cavity (13) are provided inside the water tank (2). A heat-conducting component (14) is provided between the first cavity (12) and the second cavity (13). A steam pipe (9) is fixedly connected to one side of the first cavity (12).

2. The waste heat recovery device for a distillation column according to claim 1, characterized in that: The steam pipe (9) is fixedly inserted through and extends into the interior of the distillation column (1).

3. The waste heat recovery device for a distillation column according to claim 1, characterized in that: The bottom end of the first heat pipe (6) is fixed through and extends into the filter box (3).

4. The waste heat recovery device for a distillation column according to claim 1, characterized in that: One end of the second heat pipe (7) is fixed through and extends into the interior of the second cavity (13).

5. The waste heat recovery device for a distillation column according to claim 1, characterized in that: A water supply pipe (10) is fixedly connected to the top of the first cavity (12), and a water supply valve (11) is rotatably connected to the surface of the water supply pipe (10).

6. The waste heat recovery device for a distillation column according to claim 1, characterized in that: An air outlet pipe (8) is fixedly connected to one side of the filter box (3).

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