Novel anti-corrosion chemical tail gas chimney
By introducing a corrosion-resistant layer and dustproof components into the chemical chimney, the corrosion and pollution problems of the chemical chimney are solved, achieving effective corrosion prevention and filtration, extending equipment life and reducing air pollution.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2026-03-03
AI Technical Summary
Existing chemical chimneys still suffer from corrosion and incomplete removal of airborne particles when discharging treated waste gas, leading to equipment corrosion and air pollution.
A novel corrosion-resistant chemical exhaust gas chimney has been designed, comprising a chimney body, a corrosion-resistant layer, dustproof components, and a filter screen. Through the cooperation of dustproof plates and partitions, the exhaust gas is filtered and pollutants are blocked, preventing airborne pollutants from entering the chimney.
It effectively prevents corrosion, extends the life of the chimney, reduces environmental pollution, facilitates the removal of airborne particles, and quickly drains rainwater, ensuring the long-term stable operation of the equipment.
Smart Images

Figure CN223964249U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chemical equipment technology, and more specifically, to a novel corrosion-resistant chemical exhaust gas stack. Background Technology
[0002] Chemical waste gas contains various suspended particles, such as dust, flue gas, and acid mist; and often contains toxic or corrosive gases, such as sulfur dioxide, nitrogen oxides, chlorine, and hydrogen fluoride. These gases are not only harmful to human health, but also corrode metal and building surfaces, and even pollute soil and water sources.
[0003] The chemical waste gas contains a large amount of the aforementioned toxic and harmful substances, and direct discharge of such substances would harm the environment and human health. Therefore, chemical plants must treat the waste gas to meet the national emission standards.
[0004] Chemical chimneys are devices used in chemical plants primarily for discharging treated waste gases. They play a vital role in environmental protection. Chemical chimneys, also commonly referred to as "chimneys" or "exhaust pipes," are responsible for releasing treated waste gases into the air. The design and material selection of chemical chimneys must take into account the harmful substances in the waste gases, and they typically consist of two parts: a steel structure and the chimney body.
[0005] In existing technologies, even if chemical waste gas is treated, corrosive substances and airborne particles cannot be completely removed. Long-term discharge through chemical chimneys will still cause corrosion to the chimneys, and harmful airborne particles are easily released into the high atmosphere, which will continue to pollute the air in the long run. Utility Model Content
[0006] The purpose of this utility model is to provide a novel anti-corrosion chemical exhaust gas chimney. The chimney has an ingenious structural design that not only provides anti-corrosion protection but also filters suspended particles from the exhaust gas and prevents airborne pollutants from entering the chimney, thus greatly extending the chimney's lifespan and reducing environmental pollution.
[0007] To achieve the above objectives, the preferred solution adopted by this utility model is:
[0008] A novel corrosion-resistant chemical exhaust gas chimney includes: a chimney body and a dustproof assembly disposed at the flue gas outlet end of the chimney body; the inner wall of the chimney body is provided with a corrosion-resistant layer; the dustproof assembly includes a connector, a separator, and a dustproof plate, a filter screen, and an elastic element respectively connected to the connector; the connector is connected to the flue gas outlet end; the filter screen and the dustproof plate are spaced apart from top to bottom within the chimney body, and the dustproof plate divides the chimney body into an airflow section and an exhaust section; the dustproof plate has a connecting hole; one end of the elastic element is connected to the wall of the connecting hole, and the other end is connected to the separator; the separator is disposed in the exhaust section; the separator can contact or move away from the dustproof plate to separate or connect the airflow section and the exhaust section; the filter screen is sleeved on the separator.
[0009] Furthermore, in a preferred embodiment of this utility model, the dustproof plate has at least one water outlet hole; the diameter of the water outlet hole is smaller than the diameter of the connecting hole.
[0010] Furthermore, in a preferred embodiment of the present invention, the connector includes a connecting section disposed within the body of the chimney and a fixing section disposed on the outside of the chimney body; the connecting section and the fixing section are connected to each other; the fixing section is detachably connected to the chimney body, and the cross-section of the connecting section along the direction perpendicular to the axis of the chimney body is annular; the connecting section is attached to the inner wall of the chimney body.
[0011] Furthermore, in a preferred embodiment of this utility model, the edge of the dustproof plate is connected to the connecting section.
[0012] Furthermore, in a preferred embodiment of this invention, the edge of the filter screen is detachably connected to the connecting section.
[0013] Furthermore, in a preferred embodiment of this utility model, the connecting section further includes two handles symmetrically arranged with the axis as the center line; the handles are located above the chimney body and connected to the connecting section and the fixing section.
[0014] The beneficial effects of the novel corrosion-resistant chemical exhaust gas chimney provided by this utility model are:
[0015] This utility model provides a novel corrosion-resistant chemical exhaust gas chimney, comprising a chimney body and a dustproof component disposed at the flue gas outlet end of the chimney body. Based on the structural design of the chimney body and the dustproof component, and the design of their interconnection, the resulting novel corrosion-resistant chemical exhaust gas chimney can achieve the following:
[0016] (1) The novel anti-corrosion chemical exhaust gas chimney has an ingenious structural design, which can play an excellent anti-corrosion role and greatly extend the service life of the chimney.
[0017] (2) The novel anti-corrosion chemical exhaust gas chimney has an ingenious structural design. When exhausting exhaust gas, it can filter the suspended particles of the exhaust gas. When not exhausting exhaust gas, it can block pollutants in the air from entering the chimney, greatly reducing environmental pollution.
[0018] (3) The new type of anti-corrosion chemical exhaust gas chimney has a clever structural design. Its dustproof components can be removed for regular cleaning and maintenance to remove the collected dust and other floating particles and ensure its service life.
[0019] (4) The new type of anti-corrosion chemical exhaust gas chimney has a clever structural design. When it rains, it can quickly drain the rainwater at the exhaust gas outlet and avoid the accumulation of rainwater affecting the exhaust. Attached Figure Description
[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 A partial structural schematic diagram of the novel corrosion-resistant chemical exhaust gas chimney provided for an embodiment of this utility model;
[0022] Figure 2 A partial cross-sectional schematic diagram of the novel corrosion-resistant chemical exhaust gas chimney provided in the first use state according to an embodiment of this utility model;
[0023] Figure 3 A partial cross-sectional schematic diagram of the novel corrosion-resistant chemical exhaust gas chimney provided in the second use state according to an embodiment of this utility model;
[0024] Figure 4 for Figure 2 Enlarged view of region A;
[0025] Icons: 10-New type of anti-corrosion chemical exhaust gas chimney, 100-Chimney body, 200-Flue gas outlet end, 300-Dustproof component, 110-Corrosion resistant layer, 120-Airflow section, 130-Exhaust section, 310-Connector, 320-Separator, 330-Dustproof plate, 340-Filter screen, 350-Elastic component, 311-Connecting section, 312-Fixing section, 313-Handle, 333-Connecting hole, 334-Water outlet. Detailed Implementation
[0026] 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 with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0029] Example 1
[0030] The following is in conjunction with the appendix Figure 1-4 The present invention will be further described as follows:
[0031] This utility model provides a novel corrosion-resistant chemical exhaust gas chimney 10. Please refer to [link / reference]. Figure 1-4 The new type of corrosion-resistant chemical exhaust gas chimney 10 includes a chimney body 100 and a dustproof component 300 disposed at the flue gas outlet end 200 of the chimney body 100.
[0032] The inner wall of the chimney body 100 is provided with a corrosion-resistant layer 110.
[0033] In this embodiment, the dustproof assembly 300 includes a connector 310, a separator 320, and a dustproof plate 330, a filter screen 340, and an elastic member 350 respectively connected to the connector 310.
[0034] Specifically, the connector 310 is connected to the flue gas outlet end 200. In this embodiment, the connector 310 includes a connecting section 311 disposed inside the chimney body 100 and a fixing section 312 disposed outside the chimney body 100, as well as two handles 313 symmetrically arranged with the axis as the center line.
[0035] The connecting section 311 and the fixing section 312 are interconnected. A handle 313 is located above the chimney body 100 and connected to both the connecting section 311 and the fixing section 312. The fixing section 312 is detachably connected to the chimney body 100, including but not limited to bolt connections. The connecting section 311 has an annular cross-section along a direction perpendicular to the axis of the chimney body 100, and is attached to the inner wall of the chimney body 100.
[0036] In this embodiment, the filter screen 340 and the dustproof plate 330 are arranged at intervals from top to bottom within the chimney body 100. Specifically, the edge of the dustproof plate 330 is connected to the connecting section 311, and the edge of the filter screen 340 is detachably connected to the connecting section 311.
[0037] The dustproof plate 330 divides the chimney body 100 into an airflow section 120 and an exhaust section 130. The dustproof plate 330 has a connecting hole 333. A separator 320 is disposed in the exhaust section 130. A filter screen 340 is fitted onto the separator 320. One end of an elastic member 350 is connected to the wall of the connecting hole 333, and the other end is connected to the separator 320. In this embodiment, the separator 320 can be in contact with or away from the dustproof plate 330 to separate or connect the airflow section 120 and the exhaust section 130.
[0038] In this embodiment, the dustproof plate 330 is also provided with at least one water outlet 334, the diameter of which is smaller than the diameter of the connecting hole 333.
[0039] The novel corrosion-resistant chemical exhaust gas chimney 10 provided in this embodiment works as follows: When the chimney body 100 discharges exhaust gas, the exhaust gas passes through the connecting hole 333 and provides an upward thrust to the elastic element 350 to overcome the gravity of the separator 320. At this time, the elastic element 350 is stretched, the separator 320 separates from the dustproof plate 330, and the airflow section 120 is connected to the exhaust section 130. After the exhaust gas passes through the exhaust section 130, it encounters the filter screen 340, and the suspended particles in the exhaust gas fall onto the dustproof plate 330. The gas continues to be discharged from the chimney body 100 after filtration. When the exhaust gas is stopped, the separator 320 slowly falls down to contact the dustproof plate 330. At this time, the airflow section 120 is separated from the exhaust section 130, and pollutants in the air will not fall into the chimney body 100. After a period of use, simply loosen the fixing section 312 from the chimney body 100, remove the dustproof component 300, remove the floating particles on the dustproof plate 330, and then reinstall the dustproof component 300 onto the chimney body 100.
[0040] When it rains, the rainwater accumulated on the dustproof plate 330 can fall into the chimney body 100 through the water outlet 334 and then be discharged.
[0041] In summary, the novel corrosion-resistant chemical exhaust gas chimney 10 provided in this embodiment has an ingenious structural design that not only provides corrosion protection but also filters suspended particles from the emitted exhaust gas and prevents airborne pollutants from entering the chimney, thus greatly extending the chimney's lifespan and reducing environmental pollution.
[0042] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A novel anticorrosive chemical off-gas stack, characterized by, The application relates to a dustproof component for a flue. The inner wall of the flue body is provided with a corrosion-resistant layer. The dustproof component comprises a connecting piece, a partition piece, a dustproof plate, a filter screen and an elastic piece. The connecting piece is connected to the flue outlet end; the filter screen and the dustproof plate are arranged in the flue body from top to bottom; the dustproof plate divides the flue body into an air flow section and an exhaust section; the dustproof plate is provided with a communication hole; one end of the elastic piece is connected to the hole wall of the communication hole, and the other end is connected to the partition piece; the partition piece is arranged in the exhaust section; the partition piece can contact or be away from the dustproof plate, so that the air flow section and the exhaust section are separated or communicated; the filter screen is sleeved on the partition piece.
2. The novel anti-corrosion chemical off-gas stack of claim 1, wherein, The dustproof plate is provided with at least one water outlet hole; the diameter of the water outlet hole is smaller than that of the communication hole.
3. The new anti-corrosion chemical tail gas chimney as claimed in claim 1, wherein, The connecting piece comprises a connecting section arranged in the flue body and a fixing section arranged outside the flue body; the connecting section and the fixing section are connected to each other; the fixing section is detachably connected to the flue body; the connecting section is circular in cross section perpendicular to the axial line of the flue body; the connecting section is attached to the inner wall of the flue body.
4. The novel corrosion-proof chemical off-gas chimney as claimed in claim 3, wherein, The edge of the dustproof plate is connected to the connecting section.
5. The novel anti-corrosion chemical off-gas stack of claim 3, wherein, The edge of the filter screen is detachably connected to the connecting section.
6. The new anti-corrosion chemical tail gas chimney as claimed in claim 3, wherein, The connecting section further comprises two handles symmetrically arranged with the axial line as the center line; the handles are arranged above the flue body and connected to the connecting section and the fixing section.