Improved exhaust purification system for metal smelting
The metal smelting exhaust purification system, with its modular design, solves the problems of structural complexity and maintenance difficulties of existing equipment, achieving flexible combination and efficient purification, adapting to changing operating conditions, and reducing equipment transportation and replacement costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG SUICHANG HUIJIN NONFERROUS METALS CO LTD
- Filing Date
- 2025-06-03
- Publication Date
- 2026-04-17
AI Technical Summary
Existing exhaust gas purification devices for metal smelting suffer from problems such as complex system structure, inflexible layout, high degree of modular functional coupling, difficult maintenance, poor scalability, and inconvenient transportation, making it difficult to meet the modern metallurgical industry's requirements for high adaptability, high maintainability, and high scalability.
It adopts a modular structure design, with each module being independent and connected through standardized interfaces. It includes a pretreatment module, a cooling module, a dust removal module, an adsorption and purification module, and an exhaust module. Each module is equipped with a cyclone separator, a spiral cooling pipe, a filter cartridge assembly, a drawer-type adsorption unit, and a fan unit, enabling flexible combination and efficient purification.
It enables convenient installation, disassembly, and maintenance, adapts to different smelting conditions, improves the adaptability and scalability of the purification system, and reduces equipment replacement costs.
Smart Images
Figure CN224126895U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of metallurgical environmental protection equipment technology, and more specifically to an improved exhaust purification system for metal smelting. Background Technology
[0002] Metal smelting, as an important component of basic industries, involves the emission of large amounts of high-temperature flue gas and harmful gases during its production process. Smelting exhaust typically contains pollutants such as dust particles, sulfur oxides (SOx), nitrogen oxides (NOx), and carbon monoxide (CO). If emitted directly without effective treatment, it will not only cause serious pollution to the atmospheric environment but also affect the health of employees and the safe operation of equipment.
[0003] Existing exhaust gas purification devices for metal smelting typically employ a centralized, integrated structure, combining pretreatment, cooling, dust removal, and purification functions into a single device or closed system. While this type of structure can achieve a certain level of purification, it generally suffers from the following technical problems:
[0004] 1. Complex system structure and inflexible layout: Existing integrated equipment is large in size and occupies a large area, making it difficult to install flexibly according to different site conditions, which is particularly disadvantageous to small and medium-sized smelting enterprises;
[0005] 2. High degree of functional coupling between modules, making maintenance difficult: There is a strong dependency between the processing units. If a certain functional unit fails, the entire machine needs to be shut down for maintenance, which affects the continuity of production.
[0006] 3. Poor scalability and lack of versatility: Because the components are not detachable, the existing equipment is difficult to add or remove treatment units according to changes in exhaust gas emissions, and it is also difficult to adapt to the emission characteristics under different smelting processes.
[0007] 4. Inconvenient for transportation and equipment upgrades: The overall structure is large and inconvenient to handle and relocate. If a technology upgrade is required, the entire set of equipment needs to be replaced, which is costly.
[0008] To address the aforementioned issues, some technical solutions have attempted to introduce multi-level series or replaceable module designs, but most are limited to a single functional unit. The system level remains primarily based on a fixed layout, lacking a truly modular structure and standard interface system. Consequently, they cannot meet the demands of the modern metallurgical industry for highly adaptable, maintainable, and scalable exhaust treatment systems.
[0009] Therefore, there is an urgent need to provide an improved exhaust purification system for metal smelting that is structurally sound, modularly independent, flexibly combinable, and easy to install and maintain, in order to overcome the shortcomings of existing technologies and meet the environmental protection needs under varying working conditions. Utility Model Content
[0010] The purpose of this utility model is to provide an improved exhaust gas purification system for metal smelting. Through modular structural design, it enhances the adaptability and convenience of exhaust gas purification treatment, and solves the problems of high system integration, inflexible layout, and difficult maintenance in the existing technology.
[0011] To achieve the above objectives, this utility model provides the following technical solution:
[0012] An improved exhaust gas purification system for metal smelting includes a pretreatment module, a cooling module, a dust removal module, an adsorption purification module, and an exhaust module connected in sequence, wherein:
[0013] The pretreatment module is equipped with a cyclone separator.
[0014] The cooling module is equipped with a spiral cooling pipe assembly;
[0015] The dust removal module is equipped with multiple vertically arranged filter cartridge assemblies;
[0016] The adsorption and purification module is equipped with multi-layer drawer-type adsorption units;
[0017] The exhaust module includes a fan unit and a vertically arranged exhaust chimney;
[0018] The modules are connected through standardized interfaces, forming a modular structure.
[0019] Preferably, each module has a standard frame foundation at its lower part to support and connect the guide rail structure.
[0020] Preferably, each drawer-type adsorption unit in the adsorption purification module is detachable.
[0021] Preferably, the filter cartridge assembly within the dust removal module is installed inside the module housing via a replaceable structure.
[0022] Preferably, the pretreatment module has an ash outlet at the bottom for discharging solid particles.
[0023] Preferably, the system further includes a control platform for monitoring and controlling the operating status of each module.
[0024] Preferably, the control platform is provided with electrical connection lines to each module, and the control platform includes an operating interface and a display screen.
[0025] Preferably, the fan unit is located inside the exhaust module, below the exhaust chimney.
[0026] Preferably, the modules are connected via flange interfaces or guide rail sliding connections, which facilitates disassembly, assembly, and arrangement.
[0027] As can be seen from the above technical solution, compared with the prior art, this utility model adopts a modular structure design, with each module having an independent structural layout and functional boundaries. This not only facilitates on-site installation, disassembly and maintenance, but also allows for free combination of module types and quantities according to different smelting conditions, achieving flexible process matching and efficient pollution control. Attached Figure Description
[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0029] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0030] Among them, 1-pretreatment module; 101-cyclone separator; 2-cooling module; 201-spiral cooling tube assembly; 3-dust removal module; 301-filter cartridge assembly; 4-adsorption purification module; 401-drawer-type adsorption unit; 5-exhaust module; 501-exhaust chimney; 502-fan unit. Detailed Implementation
[0031] 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.
[0032] Example
[0033] like Figure 1 As shown, this utility model provides an improved exhaust gas purification system for metal smelting, which includes a pretreatment module 1, a cooling module 2, a dust removal module 3, an adsorption purification module 4, and an exhaust module 5 in sequence according to the exhaust gas flow direction. The modules are modularly combined through flange or guide rail structures, and the overall structure is compact and easy to disassemble and maintain.
[0034] I. Preprocessing Module 1:
[0035] Pretreatment module 1 is located at the front end of the system and is used to pre-separate particulate matter from the high-temperature exhaust gas emitted from smelting. The module is equipped with a cyclone separator 101, which is cylindrical in shape and uses a tangential air intake method to form a swirling flow of exhaust gas. This allows the coarse dust particles in the gas to be thrown to the outer wall by centrifugal force and then sink to the ash hopper with the airflow.
[0036] The cyclone separator 101 is equipped with an ash discharge port at the bottom for easy cleaning of sediment. This module can also be fitted with a fire-fighting structure or a metal explosion-proof mesh to improve system operational safety, depending on actual needs.
[0037] II. Cooling Module 2:
[0038] Cooling module 2 is connected after pretreatment module 1 and is mainly used for temperature regulation of high-temperature exhaust gas. It has a spiral cooling pipe assembly 201 inside, which is made of high-temperature resistant metal material and arranged along a spiral path in the module channel.
[0039] The exhaust gas flows through the spiral cooling tube assembly 201 in a predetermined direction, while the cooling medium circulates outside the tubes, achieving effective heat exchange and cooling. This structural design can significantly reduce the heat load of downstream treatment units and protect dust removal and adsorption equipment.
[0040] The housing of cooling module 2 can be equipped with an insulation layer to prevent heat loss, and a temperature monitoring point can be set up for real-time temperature control.
[0041] III. Dust Removal Module 3:
[0042] The dust removal module 3 is used to further remove finer particulate matter from the exhaust gas. This module contains a filter cartridge assembly 301, with each set of filter cartridges arranged vertically and featuring a detachable structure for easy replacement and cleaning.
[0043] The filter cartridge assembly 301 uses high-temperature resistant composite filter media, which has high filtration efficiency and long service life. The module side wall can be equipped with an inspection door or observation port for routine maintenance. The dust removal module 3 can also be configured with a pulse backflushing system to periodically clean the filter cartridge assembly 301.
[0044] The module is equipped with a dust collection hopper at the bottom, which, together with the dust discharge system, can orderly discharge the captured dust to the dust collection box or other processing units.
[0045] IV. Adsorption and Purification Module 4:
[0046] The adsorption purification module 4 is used to remove gaseous pollutants, such as SOx and NOx, contained in the exhaust gas. This module adopts a multi-layer drawer-type structure design, with multiple drawer-type adsorption units 401 inside, which can be pulled out along the slide rail. Each adsorption unit is filled with corresponding adsorption materials such as activated carbon and molecular sieves.
[0047] The 401 drawer-type adsorption unit features a sealed structure, facilitating adsorbent replacement and adapting to different waste gas compositions. The module's inlet and outlet are equipped with flow guide structures to ensure uniform gas flow through each layer of adsorbent material, thereby improving adsorption efficiency.
[0048] Sampling ports can be configured on the top or side walls for installing monitoring probes, enabling online monitoring of exhaust gas components and reminders for adsorbent replacement.
[0049] V. Exhaust Module 5:
[0050] The exhaust module 5 is the end structure of the system, responsible for discharging the purified gas. It contains a fan unit 502, which provides negative pressure suction for the entire system, propelling the gas through each module sequentially. The fan unit 502 uses a high-temperature axial or centrifugal fan, ensuring stable operation and low noise.
[0051] The exhaust module is equipped with an exhaust chimney 501 at the top, which is a vertical structure and features corrosion resistance and backflow prevention. A rain cover or filter diffuser can be installed on the top of the exhaust chimney 501 to optimize emission performance.
[0052] The bottom structure of the module can be equipped with a liquid collection tank to collect droplets formed by condensation or accidental leakage, thus avoiding environmental pollution.
[0053] In summary, this utility model achieves multi-stage purification of waste gas during metal smelting through the scientific combination of modular structures and standardized connection methods. Each module has a distinct function, a reasonable layout, and detachable connections, exhibiting excellent adaptability, maintainability, and expandability. It is particularly suitable for flexible configuration and use in different smelting scenarios and has broad application prospects.
[0054] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. An improved exhaust gas purification system for metal smelting, characterized by, It includes a pretreatment module (1), a cooling module (2), a dust removal module (3), an adsorption and purification module (4), and an exhaust module (5) connected in sequence, wherein: The pretreatment module (1) is equipped with a cyclone separator (101); The cooling module (2) is equipped with a spiral cooling pipe assembly (201); The dust removal module (3) is equipped with multiple vertically arranged filter cartridge assemblies (301). The adsorption and purification module (4) is equipped with a multi-layer drawer-type adsorption unit (401). The exhaust module (5) includes a fan unit (502) and a vertically arranged exhaust chimney (501); The modules are connected through standardized interfaces, forming a modular structure.
2. The exhaust purification system according to claim 1, characterized by Each module has a standard frame foundation at its lower part to support and connect the guide rail structure.
3. The exhaust purification system according to claim 1, characterized by Each drawer-type adsorption unit (401) in the adsorption purification module (4) is detachable.
4. The exhaust purification system according to claim 1, characterized by The filter cartridge assembly (301) in the dust removal module (3) is installed in the module housing via a replaceable structure.
5. The exhaust purification system according to claim 1, characterized by The pretreatment module (1) has an ash outlet at the bottom for discharging solid particles.
6. The exhaust purification system according to claim 1, characterized by The system also includes a control platform (6) for monitoring and controlling the operating status of each module.
7. The exhaust purification system according to claim 6, characterized by The control platform (6) is connected to each module by electrical wiring. The control platform includes an operating interface and a display screen.
8. The exhaust purification system according to claim 1, characterized by The fan unit (502) is located inside the exhaust module (5) and below the exhaust chimney (501).
9. The exhaust purification system according to claim 1, characterized by The modules are connected via flange interfaces or guide rail sliding connections, facilitating disassembly, assembly, and arrangement.