Gas waste heat recovery equipment after RTO (Regenerative Thermal Oxidation) waste gas treatment

Abstract

The utility model discloses gas waste heat recovery equipment after RTO waste gas treatment, and belongs to the technical field of RTO waste gas treatment, the gas waste heat recovery equipment comprises a waste heat collection box, and further comprises a heat conduction pipe arranged in the waste heat collection box and used for conducting gas heat, the heat conduction pipe comprises a vertical pipe and a bent pipe, and the head and tail ends of the vertical pipe and the bent pipe are movably connected, so that the heat conduction pipe is S-shaped; the connecting assembly is arranged between the vertical pipe and the bent pipe and is used for movably clamping the vertical pipe and the bent pipe; and the cleaning assembly is arranged in the heat conduction pipe, is used for cleaning the inner walls of the bent pipe and the vertical pipe, and comprises a first cleaning ring and a second cleaning ring which are arranged in the bent pipe, so that the cleaning efficiency of the equipment is effectively improved, and the equipment is more convenient to clean.

Description

Technical Field

[0001] This utility model belongs to the field of RTO waste gas treatment technology, and in particular relates to a waste heat recovery device for RTO waste gas. Background Technology

[0002] After the exhaust gas enters the RTO equipment, it is preheated and then enters the combustion chamber for combustion. Combustion decomposes the gas into water vapor and carbon dioxide. The high-temperature water vapor is sent to the waste heat collection box for waste heat exchange and collection. Traditional heat exchange uses an S-shaped heat exchange tube placed in a liquid. The liquid absorbs the energy emitted by the heat exchange tube, thus completing the heat collection. However, since the traditional heat exchange tube is a single piece with only an open end, when high-temperature water vapor enters the heat exchange tube, the liquid in the water vapor will remain on the side wall of the metal tube, forming scale. The scale left on the side wall of the metal tube will reduce the heat exchange efficiency of the heat exchange tube. Furthermore, because the heat exchange tube is a single piece and S-shaped, it is extremely inconvenient to clean, which in turn affects the performance of the equipment. For example, the aforementioned problem of inconvenient cleaning exists in patent number CN202221849522.5. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model provides a waste heat recovery device for RTO treated exhaust gas, which solves the problem of inconvenient cleaning of heat exchange tubes.

[0004] This utility model is implemented as follows: a waste heat recovery device for RTO treated exhaust gas, including a waste heat collection box, and further comprising:

[0005] A heat-conducting pipe for conducting gas heat is installed in the waste heat collection box. The heat-conducting pipe includes a vertical pipe and a curved pipe, and the vertical pipe and the curved pipe are movably connected at their ends, so that the heat-conducting pipe is S-shaped.

[0006] A connecting component, located between the vertical pipe and the bend, is used for the movable snap-fit ​​connection between the vertical pipe and the bend;

[0007] A cleaning assembly, disposed within a heat-conducting pipe and used for cleaning the inner walls of bends and risers, includes a first cleaning ring and a second cleaning ring disposed within the bend.

[0008] As a preferred embodiment of this utility model, the connecting component includes a plug ring fixed on the bend pipe, and a mounting ring that is movably plugged into the plug ring and fixedly disposed at the end of the vertical pipe.

[0009] As a preferred embodiment of this utility model, a sealing groove is provided on the inner wall of the insertion ring, and an insertion groove for insertion of the insertion ring is provided in the mounting ring, and a sealing ring for sealing the sealing groove is provided on the inner side of the insertion groove.

[0010] As a preferred embodiment of the present invention, the cleaning assembly further includes a connecting wire fixedly disposed between the first cleaning ring and the second cleaning ring, and the first cleaning ring and the second cleaning ring on every two bends are arranged in a cross configuration.

[0011] As a preferred embodiment of this utility model, the plurality of the bent pipes are fixedly connected by a plurality of connecting rods, and the plurality of the vertical pipes are fixedly connected by another plurality of connecting rods, and the vertical pipes are fixedly installed on the inner wall of the waste heat collection box.

[0012] As a preferred embodiment of this utility model, the driving component is disposed on the outside of the waste heat collection box and is used to drive the separation of the bend and the vertical pipe. At the same time, when the bend and the vertical pipe are separated, the cleaning component cleans the inner wall of the bend and the vertical pipe, including a base fixedly disposed on the outside of the waste heat collection box; and a hydraulic rod disposed on the base and whose end is fixedly connected to the bend.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention uses the splicing of vertical and curved pipes to form a complete heat-conducting pipe. Simultaneously, the separation of the vertical and curved pipes allows for the cleaning of their inner walls. This avoids the inability to manually clean the inner walls of the heat-conducting pipe due to its integral form and long length, which would otherwise affect cleaning efficiency. The cooperation between the curved and vertical pipes allows for disassembly and cleaning of the heat-conducting pipe, accelerating the cleaning process and further improving efficiency. It also reduces the accumulation of dust and foreign matter, thus minimizing its impact on heat transfer efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the front view structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of this utility model from a frontal view.

[0017] Figure 3 This is a schematic diagram of the partial front-view separation structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure from a partial frontal view of this utility model;

[0019] Figure 5 This is a schematic diagram of a partial front internal separation mechanism of this utility model;

[0020] Figure 6 This is a cross-sectional view of a partial connection component of this utility model.

[0021] In the picture:

[0022] 1. Waste heat collection box; 2. Heat conduction pipe; 3. Vertical pipe; 4. Bend pipe; 5. Insertion ring; 6. Sealing groove; 7. Mounting ring; 8. Insertion groove; 9. Sealing ring; 10. Connecting thread; 11. First cleaning ring; 12. Second cleaning ring; 13. Base; 14. Hydraulic rod; 15. Connecting rod. Detailed Implementation

[0023] To further understand the utility model content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0024] The structure of this utility model will now be described in detail with reference to the accompanying drawings.

[0025] like Figures 1 to 6 As shown in the figure, the present invention provides a waste heat recovery device for RTO treated exhaust gas, including a waste heat collection box 1, and further comprising:

[0026] A heat-conducting pipe 2 is installed inside the waste heat collection box 1 for conducting gas heat. The heat-conducting pipe 2 includes a vertical pipe 3 and a bent pipe 4, and the vertical pipe 3 and the bent pipe 4 are movably connected at their ends, so that the heat-conducting pipe 2 is S-shaped.

[0027] A connecting component is provided between the vertical pipe 3 and the bend pipe 4 for the movable snap-fit ​​connection between the vertical pipe 3 and the bend pipe 4;

[0028] The cleaning assembly, disposed within the heat-conducting pipe 2, is used for cleaning the inner walls of the bend pipe 4 and the vertical pipe 3, and includes a first cleaning ring 11 and a second cleaning ring 12 disposed within the bend pipe 4.

[0029] As a preferred embodiment of this utility model, the connecting component includes a plug ring 5 fixed on the bend 4, and a mounting ring 7 that is movably plugged into the plug ring 5 and fixedly disposed at the end of the vertical pipe 3, for connecting the bend 4 and the vertical pipe 3 and maintaining the connection stability between the bend 4 and the vertical pipe 3.

[0030] As a preferred embodiment of this utility model, a sealing groove 6 is provided on the inner wall of the plug-in ring 5, and a plug-in groove 8 for plugging the plug-in ring 5 is provided in the mounting ring 7. A sealing ring 9 is provided on the inner side of the plug-in groove 8 for sealing the sealing groove 6. When the bend 4 and the vertical pipe 3 are connected, the sealing performance of the connection can be effectively increased by the cooperation of the sealing ring 9 and the sealing groove 6, preventing air leakage during use.

[0031] As a preferred embodiment of this utility model, the cleaning assembly further includes a connecting wire 10 fixedly disposed between the first cleaning ring 11 and the second cleaning ring 12, and the first cleaning ring 11 and the second cleaning ring 12 on the two bent pipes 4 are staggered and cross-arranged. The connecting wire 10 is made of steel wire with small diameter and high hardness, which can effectively prevent the connecting wire 10 from occupying the area of ​​the heat conduction pipe 2, thereby affecting its heat conduction effect.

[0032] As a preferred embodiment of this utility model, several bent pipes 4 are fixedly connected by multiple connecting rods 15, and several vertical pipes 3 are fixedly connected by another multiple connecting rods 15. The vertical pipes 3 are fixedly installed on the inner wall of the waste heat collection box 1, which makes it easier to separate the bent pipes 4 and the vertical pipes 3.

[0033] As a preferred embodiment of this utility model, the drive assembly is disposed on the outside of the waste heat collection box 1 and is used to drive the separation of the bend 4 and the vertical pipe 3. At the same time, when the bend 4 and the vertical pipe 3 are separated, the cleaning assembly cleans the inner walls of the bend 4 and the vertical pipe 3, including a base 13 fixedly disposed on the outside of the waste heat collection box 1; and a hydraulic rod 14 disposed on the base 13 and whose end is fixedly connected to the bend 4, so that the equipment can form an automatic separation situation, which further improves its cleaning efficiency and reduces the manual cleaning steps.

[0034] The working principle of this utility model:

[0035] refer to Figure 2 The heat pipe 2 is S-shaped and installed in the waste heat collection box 1. The gas after combustion is introduced into the heat pipe 2 from one end and discharged from the other end. The waste heat in the gas can be collected by the liquid in the waste heat collection box 1, thereby effectively recovering the heat in the combustion gas. However, after the heat pipe 2 has been used for a period of time, the combustion gas contains a large amount of water vapor, and the water vapor remains on the side wall of the heat pipe 2, forming scale, which affects its heat conduction efficiency. At this time, the heat pipe 2 needs to be cleaned. The specific cleaning steps are as follows.

[0036] Initially, the second cleaning ring 12 is located inside the bend 4, and the first cleaning ring 11 is located inside the vertical pipe 3. During cleaning, refer to... Figure 3 Separate the bend 4 and the vertical pipe 3, moving the bend 4 away from the end of the vertical pipe 3. When the bend 4 is away from the vertical pipe 3, refer to... Figure 5 The second cleaning ring 12 moves to the end of the upper side bend 4. At this time, the second cleaning ring 12 cleans the inner wall of the lower bend 4 under the pull of the connecting wire 10. Similarly, the first cleaning ring 11 moves to the upper end of the vertical pipe 3. At this time, the first cleaning ring 11 can effectively clean the upper half of the side wall of the vertical pipe 3. Similarly, when the lower side bend 4 moves, it cleans the lower half of the inner wall of the vertical pipe 3. This forms a situation where the first cleaning ring 11 and the second cleaning ring 12 clean the inner walls of the bend 4 and the vertical pipe 3 at the same time when the two bends 4 move away from each other.

[0037] Reference after cleaning Figure 6 By inserting the bottom of the insertion ring 5 into the insertion groove 8, and with the sealing ring 9 located in the sealing groove 6, the connection stability between the bend 4 and the vertical pipe 3 can be effectively guaranteed.

[0038] To improve the cleaning efficiency of the equipment, the hydraulic rod 14 can be extended to move the bend 4 and the vertical pipe 3 away from each other, thereby avoiding the need for manual cleaning and further improving the cleaning efficiency of the equipment.

[0039] This invention forms a complete heat-conducting pipe 2 by splicing the vertical pipe 3 and the bent pipe 4. At the same time, the separation between the vertical pipe 3 and the bent pipe 4 allows for the cleaning of the inner walls of the bent pipe 4 and the vertical pipe 3. This avoids the problem that the inner walls of the heat-conducting pipe 2 cannot be cleaned manually due to its integral shape and long length, which would affect the cleaning efficiency of the heat-conducting pipe 2. The cooperation between the bent pipe 4 and the vertical pipe 3 allows the heat-conducting pipe 2 to be disassembled for cleaning, speeding up the cleaning process and further improving its cleaning efficiency. It also reduces the accumulation of dust and foreign objects, thereby reducing the impact on its heat conduction efficiency.

[0040] 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, article, 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, article, or apparatus.

[0041] 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. An RTO process off-gas after-gas waste heat recovery apparatus comprising a waste heat collection tank (1), characterized in that: Also include: The heat pipe (2) for heat conduction of gas heat is arranged in the waste heat collection box (1), the heat pipe (2) includes vertical pipe (3) and elbow pipe (4), and the vertical pipe (3) and the elbow pipe (4) are movably connected at the first and last ends, so that the heat pipe (2) is S-shaped; Connecting assembly is arranged between the vertical pipe (3) and the elbow pipe (4), and is used for movably clamping the vertical pipe (3) and the elbow pipe (4); Cleaning assembly is arranged in the heat pipe (2), and is used for cleaning the inner wall of the elbow pipe (4) and the vertical pipe (3), and includes first cleaning ring (11) and second cleaning ring (12) arranged in the elbow pipe (4).

2. The RTO exhaust gas aftertreatment waste heat recovery apparatus according to claim 1, characterized in that: The connecting assembly includes a plug-in ring (5) fixed on the elbow pipe (4), and a mounting ring (7) movably plugged with the plug-in ring (5) and fixedly arranged at the end of the vertical pipe (3).

3. The RTO exhaust gas after-gas waste heat recovery apparatus according to claim 2, characterized by: The inner wall of the plug-in ring (5) is provided with a sealing groove (6), the mounting ring (7) is provided with a plug-in groove (8) for plug-in of the plug-in ring (5), and the inner side of the plug-in groove (8) is provided with a sealing ring (9) for sealing of the sealing groove (6).

4. The RTO exhaust gas after-gas waste heat recovery apparatus according to claim 3, characterized by: The cleaning assembly further includes a connecting wire (10) fixedly arranged between the first cleaning ring (11) and the second cleaning ring (12), and the first cleaning ring (11) and the second cleaning ring (12) on every two elbow pipes (4) are arranged in cross.

5. The RTO exhaust gas after-gas waste heat recovery apparatus according to claim 4, characterized by: A plurality of connecting rods (15) are used to fixedly connect a plurality of the elbow pipes (4), a plurality of connecting rods (15) are used to fixedly connect a plurality of the vertical pipes (3), and the vertical pipe (3) is fixedly arranged on the inner wall of the waste heat collection box (1).

6. The RTO exhaust gas after-gas waste heat recovery apparatus according to claim 5, characterized by: The driving assembly is arranged outside the waste heat collection box (1), and is used for driving the separation of the elbow pipe (4) and the vertical pipe (3), and when the elbow pipe (4) and the vertical pipe (3) are separated, the cleaning assembly cleans the inner wall of the elbow pipe (4) and the vertical pipe (3), including a base (13) fixedly arranged outside the waste heat collection box (1), a hydraulic rod (14) arranged on the base (13) and fixedly connected with the elbow pipe (4) at the end.

Images