Damage-proof structure for purification pipeline of waste acid recovery system
By installing an arc-shaped curved panel guide on the transition pipe, the problem of dilute acid not being able to descend vertically was solved, realizing the vertical distribution of dilute acid and the protection of high-temperature flue gas, thus improving the safety and stability of the equipment.
Patent Information
- Application Number
- CN202323623369.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2033-12-29
AI Technical Summary
The dilute acid in the existing purification pipeline cannot descend vertically and be distributed to the inner wall of the FRP pipe, causing high-temperature flue gas to damage the FRP pipe and posing a safety hazard.
A guide is installed on the small outer diameter pipe of the transition pipe. It is designed as an arc-shaped curved panel structure. The horizontal arc bend is in the same direction as the inner wall of the fiberglass pipe, and the longitudinal bend is outward. It is used to block the horizontal flow of dilute acid and change the flow direction, so that it falls vertically to the inner wall of the fiberglass pipe. The guide is made of lead alloy to prevent corrosion.
It effectively prevents high-temperature flue gas from damaging fiberglass pipes, avoids flange seal leakage, improves the safety and stability of the equipment and the coverage effect of dilute acid, and reduces environmental pollution and equipment maintenance costs.
Smart Images
Figure CN222316295U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of chemical equipment and relates to a pipeline damage prevention structure, in particular to a waste acid recovery system purification pipeline damage prevention structure. Background Art
[0002] With the energy shortage, resource shortage and serious environmental pollution, environmental protection has become a global issue and has attracted the attention of the whole society and mankind. Recycling a large amount of acid waste liquid generated in the industrial production process and realizing the rational use of resources not only avoids the waste of resources, reduces environmental pollution, but also prevents threats to human health. It not only generates environmental benefits but also economic and social benefits. Therefore, it is necessary to recycle and reuse acid waste liquid.
[0003] At present, in the purification pipeline of the waste acid recovery system of the chemical plant, a small outer diameter pipe structure (smaller than the outer diameter of the transition pipe) protruding from the lower flange is designed at the outlet of the transition pipe, which is used to insert into the FRP pipe in the tangential mixer of the dynamic wave scrubber, and blocks the dilute acid from flowing horizontally toward the center of the pipe, causing it to drop vertically and be distributed to the inner wall of the FRP pipe, thereby preventing high-temperature flue gas from damaging the FRP pipe. However, in actual applications, the dilute acid is often unable to drop vertically and be distributed to the inner wall of the FRP pipe because the small outer diameter pipe at the outlet of the transition pipe does not match the inner diameter of the FRP pipe in the tangent mixer. The outer diameter of the small outer diameter pipe is too large to be inserted into the FRP pipe, so the dilute acid cannot drop vertically and be distributed to the inner wall of the FRP pipe. The outer diameter of the small outer diameter pipe is too small. Although it can be inserted into the FRP pipe to make the dilute acid drop vertically, the dilute acid dropping along the outer wall of the small outer diameter pipe cannot contact the inner wall of the FRP pipe, resulting in the inner wall of the FRP pipe being exposed without being covered with dilute acid, causing the high-temperature flue gas to contact the FRP pipe during the flow, thereby damaging the FRP pipe, thereby affecting the safe and stable operation of the equipment, and posing certain safety hazards. Utility Model Content
[0004] The purpose of the utility model is to provide a damage-proof structure for the purification pipeline of a waste acid recovery system, which is used for the purification pipeline of the waste acid recovery system and has the advantages of simple structure, convenient installation, stability and reliability, wide application range and low cost. It can effectively solve the problem that the existing purification pipeline cannot make the dilute acid drop vertically and distribute it to the inner wall of the glass fiber reinforced plastic pipeline, and the high-temperature flue gas will damage the glass fiber reinforced plastic pipeline.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0006] A waste acid recovery system purification pipeline damage prevention structure, including a transition pipe, a power wave scrubber tangent mixer, and a glass fiber reinforced plastic pipeline, wherein the outlet end of the transition pipe is designed as a small outer diameter pipe structure (smaller than the outer diameter of the transition pipe), a flange is arranged on the transition pipe for connecting the transition pipe with the glass fiber reinforced plastic pipeline, the glass fiber reinforced plastic pipeline is arranged in the power wave scrubber tangent mixer, and the outer circumferential direction of the power wave scrubber tangent mixer is provided with several input ports, which can allow dilute acid to flow in from a high position, and a corresponding inlet is provided at the junction of the glass fiber reinforced plastic pipeline and the transition pipe, so that the acid can flow in from a high position to the dynamic wave scrubber. The dilute acid in the tangential mixer of the Reebo scrubber can overflow into the FRP pipe. A guide is provided on the small outer diameter pipe of the transition pipe. The guide is designed as an arc-shaped curved plate structure. The bending direction and curvature of the transverse arc are the same as the bending direction and curvature of the inner wall of the FRP pipe, and the longitudinal direction is an outward bending (toward the FRP pipe) structure. The guide can not only block the dilute acid from flowing horizontally toward the center of the FRP pipe, but also be used for drainage, changing the direction of the dilute acid flow, so that the dilute acid flows to the inner wall of the FRP pipe, and avoiding high-temperature flue gas from damaging the FRP pipe.
[0007] Preferably, the inner wall surface of the transition pipe is lined with a layer of lead to prevent corrosion by dilute acid.
[0008] Preferably, the guide member is connected to the small outer diameter tube of the transition tube in a detachable manner.
[0009] Preferably, the guide member is made of lead alloy to resist corrosion by dilute acid.
[0010] Preferably, there are four input ports in total, and correspondingly, there are four guide members, each of which matches a quarter of the inner wall of the FRP pipe, ensuring that the dilute acid drained through the guide members can cover the inner wall of the FRP pipe.
[0011] Preferably, the number of the guide members is the same as the number of input ports of the dynamic wave scrubber tangential mixer, and they are arranged in a front-to-back connection manner (i.e., the end of the previous guide member is connected to the front end of the next guide member), which is convenient for installation and production.
[0012] Preferably, the guide member is of a gradually expanding structure from the front end to the rear end, which not only facilitates the front and rear connection of the guide member, but also facilitates the drainage effect of the guide member on the dilute acid.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] 1. The utility model adopts a waste acid recovery system purification pipeline damage prevention structure, and a guide piece is provided on the small outer diameter tube of the transition tube, which not only blocks the dilute acid from flowing horizontally toward the center of the pipeline to make it drop vertically and be distributed to the inner wall of the FRP pipeline, but also prevents the high-temperature flue gas from damaging the FRP pipeline, avoids leakage at the tangent mixer flange seal, and can greatly improve the on-site working environment and effectively reduce environmental pollution.
[0015] 2. The utility model adopts a waste acid recovery system purification pipeline damage prevention structure. Since the flue gas temperature in the pipeline is too high, a cooling method of continuously circulating and spraying dilute acid is adopted to enable the purification section to operate under a slightly negative pressure state, which can greatly reduce the high-temperature damage in the transition pipe and the FRP pipeline, extend its service life, and improve the operation effect of the waste acid recovery.
[0016] 3. The utility model adopts a waste acid recovery system purification pipeline damage prevention structure, which has the advantages of simple structure, low material consumption, light weight, etc. It is used for connecting and adjusting pipelines, has good fluid control characteristics and sealing performance, improves the recovery rate of waste acid recovery, and improves the stability and reliability of the waste acid recovery system. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:
[0018] Figure 1 It is a cross-sectional structural schematic diagram of the utility model;
[0019] Figure 2 A top view of the input port of the utility model is provided;
[0020] Figure 3 It is a schematic diagram of the rear structure of the guide member of the utility model;
[0021] Figure 4 This is a schematic diagram of the side structure of the guide member of the utility model
[0022] Figure 5 The utility model is a schematic diagram of a top view of the guide member.
[0023] In the attached drawings, the parts represented by the various reference numerals are listed as follows: 1. transition pipe; 2. small outer diameter pipe; 3. flange; 4. dynamic wave scrubber tangential mixer; 5. fiberglass pipe; 6. inlet; 7. inlet; 8. guide. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the examples of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0026] For easier understanding, see Figure 1-5The utility model provides a waste acid recovery system purification pipeline damage prevention structure, including a transition pipe 1, a power wave scrubber tangent mixer 4, and a glass fiber reinforced plastic pipeline 5. The outlet end of the transition pipe 1 is designed as a small outer diameter pipe 2 structure (smaller than the outer diameter of the transition pipe 1). A flange 3 is arranged on the transition pipe 1 for connecting the transition pipe 1 with the glass fiber reinforced plastic pipeline 5. A layer of lead is lined on the inner wall surface of the transition pipe 1 to resist dilute acid corrosion. The glass fiber reinforced plastic pipeline 5 is arranged in the power wave scrubber tangent mixer 4. The power wave scrubber tangent mixer 4 is provided in the glass fiber reinforced plastic pipeline 5. Several inlet ports 6 are arranged on the outer circumference of the line mixer 4, which allow the dilute acid to flow in from a high position. A corresponding inlet port 7 is provided at the junction of the glass fiber reinforced plastic pipe 5 and the transition pipe 1, so that the dilute acid flowing into the tangent mixer 4 of the power wave scrubber from a high position can overflow into the glass fiber reinforced plastic pipe 5. A guide member 8 is arranged on the small outer diameter pipe 2 of the transition pipe 1. The connection between the guide member 8 and the small outer diameter pipe 2 of the transition pipe 1 is a detachable connection. The guide member 8 is designed as an arc-shaped curved plate structure, and its transverse arc bending direction and curvature are consistent with the glass fiber reinforced plastic pipe 1. The inner wall of the pipe 5 has the same bending direction and curvature, and its longitudinal direction is an outward bending structure (toward the FRP pipe 5). The guide member 8 is made of lead alloy to prevent dilute acid corrosion, and there are four input ports 6. Accordingly, there are four guide members 8, each of which matches one-fourth of the inner wall of the FRP pipe 5 to ensure that the dilute acid drained by the guide member 8 can cover the inner wall of the FRP pipe 5. The number of guide members 8 is the same as the number of input ports 6 of the dynamic wave scrubber tangent mixer 4. The guide members 8 are arranged in a front-to-back connection manner (i.e., the end of the previous guide member 8 is connected to the front end of the next guide member 8), which is convenient for installation and production. The guide member 8 can not only block the dilute acid from flowing horizontally toward the center of the FRP pipe 5, but also be used for drainage, change the direction of the dilute acid flow, and make the dilute acid flow to the inner wall of the FRP pipe 5 to avoid high-temperature flue gas from damaging the FRP pipe 5. In addition, the guide member 8 is a gradually expanding structure from the front end to the end, which is not only convenient for the front-to-back connection of the guide member 8, but also conducive to the drainage effect of the guide member 8 on the dilute acid.
[0027] The working principle of this utility model:
[0028] During the purification process of the waste acid recovery system, the high-temperature flue gas flows down from the top through the transition pipe 1 and flows through the FRP pipe 5. Because the high-temperature flue gas temperature is too high, which can reach up to 300°C, when the high-temperature flue gas contacts the FRP pipe 5, it will damage the FRP pipe 5 and cause leakage at the sealing part of the flange 3. At this time, the dilute acid flows into the power wave scrubber tangential mixer 4 from the input port 6 of the power wave scrubber tangential mixer 4 from a high position. When the dilute acid overflows the power wave scrubber tangential mixer 4, the dilute acid can overflow into the power wave scrubber tangential mixer 4 through the inlet 7. Entering the FRP pipe 5, at this time, the guide piece 8 on the small outer diameter pipe 2 of the transition pipe 1 can change the flow direction of the dilute acid and guide the dilute acid, so that the dilute acid drops vertically and is distributed to the inner wall of the FRP pipe 5, avoiding the dilute acid from flowing horizontally toward the center of the FRP pipe 5. The dilute acid covers the inner wall of the FRP pipe 5 so that the high-temperature flue gas does not directly contact the FRP pipe 5, and the dilute acid contacts the high-temperature flue gas, which has a cooling effect, can prevent the high-temperature flue gas from damaging the FRP pipe 5, and avoid leakage at the sealing part of the flange 3.
[0029] In summary, the utility model has a simple structure, is convenient and quick to use, and has strong practicality. Therefore, the utility model effectively overcomes the practical problems in the prior art and has high utilization value and practical significance.
[0030] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Although the embodiments of the utility model have been shown and described, it is obvious to those skilled in the art that various modifications, substitutions, variations and improvements can be made to these embodiments without departing from the scope of the principles and spirit of the utility model, and the scope of the utility model is defined by the attached claims and their equivalents.
Claims
1. A waste acid recovery system purification pipeline damage prevention structure, comprising a transition pipe (1), a power wave scrubber tangent mixer (4), and a glass fiber reinforced plastic pipe (5), wherein the outlet end of the transition pipe (1) is designed as a small outer diameter pipe (2) structure, a flange (3) is provided on the transition pipe (1), and the glass fiber reinforced plastic pipe (5) is arranged in the power wave scrubber tangent mixer (4), characterized in that: The tangential mixer (4) of the power wave scrubber is provided with a plurality of input ports (6) in the circumferential direction on the outside, a corresponding inlet port (7) is provided at the junction of the glass fiber reinforced plastic pipe (5) and the transition pipe (1), and a guide member (8) is provided on the small outer diameter pipe (2) of the transition pipe (1). The guide member (8) is designed as an arc-shaped curved plate structure, the bending direction and curvature of the transverse arc are the same as the bending direction and curvature of the inner wall of the glass fiber reinforced plastic pipe (5), and the longitudinal direction is an outwardly curved structure.
2. The anti-damage structure for purification pipelines of a waste acid recovery system according to claim 1, characterized in that: The inner wall surface of the transition pipe (1) is lined with a layer of lead.
3. The anti-damage structure for purification pipeline of a waste acid recovery system according to claim 1, characterized in that: The guide member (8) is connected to the small outer diameter tube (2) of the transition tube (1) in a detachable manner.
4. The anti-damage structure for purification pipeline of a waste acid recovery system according to claim 3, characterized in that: The guide member (8) is made of lead alloy.
5. The anti-damage structure for purification pipeline of a waste acid recovery system according to claim 1, characterized in that: There are four input ports (6) in total, and correspondingly, there are four guide members (8), each of which matches a quarter of the inner wall of the glass fiber reinforced plastic pipe (5).
6. The anti-damage structure for purification pipeline of a waste acid recovery system according to claim 3, characterized in that: The number of the guide members (8) is the same as the number of the input ports of the power wave scrubber tangential mixer (4), and they are arranged in a front-to-back connection manner.
7. The anti-damage structure for purification pipelines of a waste acid recovery system according to claim 3, characterized in that: The guide member (8) is of a gradually expanding structure from the front end to the rear end.