Integrated fan device for targeting and treating malodorous gas using functional fiber

Abstract

The application relates to the technical field of waste gas treatment equipment in environmental engineering, and discloses an integrated fan equipment for targeting treatment of foul gas by using functional fibers, which comprises a shell and a PLC-based full-automatic control system, one side of the shell is provided with an air inlet, the top and three side walls of the inner side of the shell are provided with snap rings, the top and three side walls of the inner side of the shell are provided with targeting functional fiber layers through the snap rings, the bottom of the shell is provided with a circulating water pool, a circulating pump is fixedly installed in the circulating water pool, the circulating pump is connected with a spraying pipeline, the spraying pipeline is located in the shell, constitutes a circulating liquid storage and conveying unit, realizes circulating supply of chemical absorption liquid, three side walls at the top side of the shell are provided with air outlets, a fan is installed at the air inlet, and an air inlet pipeline is connected with the input end of the fan.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment equipment in environmental engineering, and particularly to an integrated fan device that utilizes functional fibers to target and treat malodorous gases. Background Technology

[0002] With the continued growth of the global economy, environmental pollution has become increasingly severe, with various pollution phenomena constantly emerging, posing a serious threat to human health and survival. To ensure sustainable development for humanity, environmental governance has become an urgent task. In recent years, with the continuous improvement of living standards, people have raised higher standards for the treatment of odorous gases, particularly in the livestock industry. As the livestock industry becomes more large-scale and automated, the amount of odorous gases produced is also increasing, and these gases are mostly characterized by large volumes and low concentrations, which places higher demands on the economic efficiency of environmental protection equipment.

[0003] Odors from livestock farms originate from a complex multiphase process involving physical, chemical, and biological mechanisms. Their main sources include anaerobic fermentation of feces, decaying feed and bedding, animal metabolic waste, and secondary emissions from wastewater treatment. Nitrogenous and sulfur-containing organic matter in feces is decomposed by microorganisms into key inorganic odor-causing compounds such as ammonia and hydrogen sulfide. Simultaneously, the degradation of proteins and other substances produces various volatile organic compounds such as indole and fatty acids, creating a complex odor profile. Furthermore, odorous substances often adhere to the surfaces of dust and aerosols, thus increasing their propagation distance and persistence.

[0004] Among various malodorous substances, ammonia is highly irritating, mainly originating from the hydrolysis of urea and the mineralization of nitrogen-containing organic matter; hydrogen sulfide is highly toxic and has an extremely low odor threshold, produced by the anaerobic decomposition of sulfur-containing organic matter by sulfate-reducing bacteria; VOCs, through synergistic effects, exacerbate malodor intensity, causing serious harm to the surrounding ecological environment and human health. Odor control in livestock farms requires addressing the characteristics of these pollutants, necessitating the development of treatment equipment that is highly efficient, stable, and economical.

[0005] Current end-of-pipe treatment technologies for odorous gases are mainly divided into adsorption, biological, absorption, advanced oxidation methods (plasma, photocatalysis, ozone), and combustion. The equipment corresponding to each technology has significant limitations and is difficult to meet the needs of complex operating conditions in livestock farms. The current common practice is to combine multiple treatment methods, but for large-scale livestock farms, the exhaust gas is characterized by low concentration and large volume. The investment in matching equipment is large, but the energy consumption is also high, resulting in a heavy economic burden and failing to meet the requirements of green, environmentally friendly and sustainable development.

[0006] Targeted functional fiber deodorization technology encompasses a multi-faceted fusion of chemical adsorption, physical adsorption, chemical absorption, and oxidation. Compared to traditional technologies, this technology boasts extremely high removal efficiency, consistently achieving over 95% over the long term. It has a wide range of applications, particularly suitable for removing specific pollutants (acidic, alkaline, and polar), areas with stringent emission standards, and location-sensitive environments. It is also suitable for scenarios with unstable intake conditions, intermittent operation requirements, and limited site space.

[0007] Targeted functional fiber related equipment: The deodorization wall technology developed in the early stage adopts PP spherical structure with built-in targeted functional fiber filter media or mesh targeted functional fiber filter screen. Although it has advantages such as large contact area and stable operation, it has the core defects of large size and high basic investment cost, making it difficult to adapt to small space breeding house and low-cost transformation scenarios.

[0008] In summary, existing odor control equipment generally suffers from problems such as large size, complex installation, high energy consumption, low regeneration efficiency, and insufficient intelligence, which cannot meet the diverse, low-cost, efficient, and stable odor control needs of farms. Therefore, we propose an integrated fan device that utilizes functional fibers to target and treat odorous gases. Summary of the Invention

[0009] The purpose of this invention is to provide an integrated fan device that utilizes functional fibers to target and treat odorous gases, providing efficient treatment of odorous gases from livestock farms. It is especially suitable for purifying odorous gases with complex composition, large concentration fluctuations, and large air volume, and can be widely used in the end-of-pipe treatment of odorous pollution sources such as large-scale livestock farms, sewage treatment plants, solid waste storage yards, organic fertilizer plants, and filter press workshops.

[0010] The above-mentioned technical objective of this invention is achieved through the following technical solution: an integrated fan device for targeted treatment of odorous gases using functional fibers, comprising a housing and a PLC-based fully automated control system. An air inlet is provided on one side of the housing. Clamping rings are provided on the top and three side walls of the inner side of the housing. Targeted functional fiber layers are installed on the top and three side walls of the inner side of the housing via the clamping rings. A circulating water tank is provided at the bottom of the housing. A circulating pump is fixedly installed inside the circulating water tank. The circulating pump is connected to a spray pipe located inside the housing, forming a circulating liquid storage and transportation unit to realize the circulating supply of chemical absorption liquid. Air outlets are provided on the three side walls of one side of the top of the housing. A fan is installed at the air inlet. The fan's input end is connected to an air inlet duct. The four targeted functional fiber layers are symmetrically distributed on the inner wall of the housing, forming a three-dimensional purification channel. This increases the contact area between the odorous gas and the purification medium of the targeted functional fiber layers. The spray pipes are evenly arranged along the central axis of the targeted functional fiber layers, and the spray holes are distributed in a matrix to ensure that the spray liquid evenly covers the surface of the filter element. The targeted functional fiber layers adopt a drawer-type design, which is convenient for replacement. The filter element has a service life of 3 to 5 years and can be replaced without stopping the machine for disassembly. Furthermore, spherical, cylindrical, and V-shaped drawer types can be selected according to the site conditions. The spray pipes are modularly connected to the targeted functional fiber layers. This structure can achieve 100% contact between the regeneration liquid and the targeted functional fibers, thereby achieving in-situ regeneration through a chemical reduction reaction.

[0011] In this invention, an AI control panel is installed on one side of the housing. The PLC-based fully automated control system includes a hardware integration layer and four operating dimensions. The hardware integration layer consists of a PLC main control unit, a human-machine interface, a detection unit, and an early warning unit. The four operating dimensions consist of a test run mode, a manual control mode, a system automatic start-stop safety procedure, and an AI model intelligent control mode. The AI ​​model intelligent control mode includes multi-source data acquisition, AI analysis and learning, and intelligent parameter adjustment. This equipment is equipped with a PLC-based fully automated control system, integrating a touch screen human-machine interface, a pH meter, an ORP meter, a level gauge, various transmitters, and a multi-level alarm system. It has four operating dimensions: a test run mode, a manual control mode, a system automatic start-stop safety procedure, and AI model intelligent control.

[0012] By integrating AI model technology, a multi-source data sensing network is constructed by real-time acquisition of key parameters such as fan operating status, fan and impeller motor frequency (Hz), equipment differential pressure signal, inlet and outlet differential pressure dynamics, distributed temperature monitoring points, pH value, and inlet and outlet concentrations of exhaust gas. This network enables self-analysis and learning, intelligently adjusting various parameters based on the analysis results to achieve the appropriate environmental indicators required by the equipment.

[0013] An integrated intelligent control system enables self-optimization of operating parameters, fault diagnosis, and remote intervention. Inlet and outlet concentration control system: Both the inlet and outlet of the treatment equipment are equipped with exhaust gas concentration detection devices, providing real-time feedback on exhaust gas treatment status. Based on the inlet and outlet concentrations, AI simulates and adjusts the system's operating power to ensure long-term stable efficiency of over 95%, while simultaneously reducing operating costs.

[0014] The beneficial effects of this invention are:

[0015] 1) High and stable processing efficiency, long material life.

[0016] Targeted functional fibers, through surface grafting modification, possess directional adsorption capabilities, achieving removal efficiencies of ≥98% for NH3 and H2S, ≥95% for VOCs, and 97%-100% for low-concentration pollutants (≤10ppm). The functional fibers exhibit stable performance after regeneration, with a service life of 3-5 years, significantly longer than traditional activated carbon (1-2 years) and packing balls (6-12 months), thus reducing consumable replacement costs.

[0017] 2) Compact size, convenient installation and transportation.

[0018] The integrated design of the all-in-one machine significantly reduces the size of the equipment, decreasing by 60%-70% compared to traditional deodorizing walls and by more than 80% compared to separate modular units. The equipment adopts a modular assembly structure, is lightweight, and requires no heavy equipment for installation; 2-4 people can complete on-site assembly in ≤8 hours. It can be disassembled into multiple modules for transportation, reducing transportation costs by more than 50%, making it suitable for low-cost renovations of small-space livestock sheds and older farms.

[0019] 3) Low wind resistance

[0020] With its four-sided air outlet design and streamlined flow channel optimization, the equipment's air resistance is only 50-100Pa, far lower than that of traditional deodorizing water curtain walls (200-300Pa) and chemical scrubbing towers (300-500Pa), reducing fan energy consumption by 30%-40%.

[0021] 4) Flexible operation and low maintenance costs.

[0022] The equipment can selectively switch one or more units on / off based on temperature and odor concentration, and can also automatically adjust operating parameters through an AI control system to adapt to different working conditions. The functional fiber module adopts a drawer-type design, making replacement convenient. The filter element has a service life of 3 to 5 years, and replacement does not require stopping the machine for disassembly. The drawer type can be selected according to the site conditions, namely spherical (efficiency up to 85%), cylindrical (efficiency up to 90%), and V-type (efficiency up to 99%). The regenerated liquid is recycled, reducing waste liquid discharge. The equipment has no complex mechanical movements, and the operating noise is ≤60dB, meeting the quiet requirements of aquaculture sites. Only periodic sensor checks and regenerated liquid replenishment are required, with a maintenance frequency of once a month, reducing maintenance costs by 70% compared to traditional equipment.

[0023] 5) Wide range of applications and strong adaptability

[0024] For existing farms, the equipment can be connected to existing fans via flexible connections such as rainproof cloth, eliminating the need for a separate deodorization room. For newly built farms, it can be directly used with fiberglass fans without additional modifications. The equipment handles air volumes ranging from 5000 to 50000 m³ / h, making it suitable for farms of different sizes, wastewater treatment plants, organic waste treatment stations, and other similar settings. It can efficiently treat odorous gases with high, low, and fluctuating concentrations.

[0025] 6) Significant economic benefits

[0026] Compared to traditional integrated spray deodorization machines, the equipment investment cost is slightly higher, but operating costs (electricity, consumables, and maintenance) are reduced by more than 60%, with a payback period of only about 3 years. At the same time, the equipment completely solves the problem of foul odor complaints, improves the environmental quality around the breeding site, and has significant environmental and social benefits.

[0027] 7) Environmentally friendly and energy-saving, with strong regeneration capabilities.

[0028] It supports continuous / pulse regeneration, completing 100% in-situ regeneration of functional materials within 15-30 seconds, avoiding downtime losses and extending the service life of materials. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0031] Figure 2 This is a cross-sectional view of the main view of the present invention.

[0032] Figure 3 This is a top-view cross-sectional view of the present invention.

[0033] Figure 4 This is a flowchart of the PLC-based fully automated control system of the present invention.

[0034] Figure 5 This is a schematic diagram of the spherical structure of the targeted functional fiber layer of the present invention.

[0035] Figure 6 This is a schematic diagram of the columnar structure of the targeted functional fiber layer of the present invention.

[0036] Figure 7 This is a schematic diagram of the V-shaped structure of the targeted functional fiber layer of the present invention.

[0037] In the diagram, 1. Shell; 2. Targeted functional fiber layer; 3. AI control panel; 4. Air inlet; 5. Circulating water tank; 6. Circulating pump; 7. Snap ring; 8. Spray pipe; 9. Fan; 10. Air inlet pipe; 11. Air outlet. Detailed Implementation

[0038] The technical solution of the present invention will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0039] Please see Figure 1-3 This invention provides a technical solution: an integrated fan device for targeted treatment of odorous gases using functional fibers, comprising a housing 1 and a PLC-based fully automated control system. An air inlet 4 is provided on one side of the housing 1. Clamping rings 7 are provided on the top and three side walls of the inner side of the housing 1. Targeted functional fiber layers 2 are installed on the top and three side walls of the inner side of the housing 1 via the clamping rings 7. A circulating water tank 5 is provided at the bottom of the housing 1. A circulating pump 6 is fixedly installed inside the circulating water tank 5. The circulating pump 6 is connected to a spray pipe 8, which is located inside the housing 1, forming a circulating liquid... The storage and delivery unit realizes the circulation supply of chemical absorption liquid. Air outlets 11 are opened on three side walls on the top side of the housing 1. A fan 9 is installed at the air inlet 4. The input end of the fan 9 is connected to the air inlet pipe 10. An AI control panel 3 is installed on one side of the housing 1. Four targeted functional fiber layers 2 are symmetrically distributed on the inner wall of the housing 1 to form a three-dimensional purification channel, which increases the contact area between malodorous gas and the purification medium of the targeted functional fiber layer 2. The spray pipe 8 is evenly arranged along the central axis of the targeted functional fiber layer 2, and the spray holes are distributed in a matrix to ensure that the spray liquid evenly covers the surface of the filter element.

[0040] Please see Figure 5-7 The targeted functional fiber layer 2 adopts a drawer-type design, which is convenient for replacement. The filter element has a service life of 3 to 5 years and can be replaced without stopping the machine for disassembly. It can also be selected as spherical, columnar, or V-shaped drawer type according to the on-site working conditions. The spray pipe 8 is modularly connected to the targeted functional fiber layer 2. This structure can achieve 100% contact between the regeneration liquid and the targeted functional fiber, and achieve in-situ regeneration through chemical reduction reaction.

[0041] Please see Figure 4 The PLC-based fully automated control system comprises a hardware integration layer and four operational dimensions. The hardware integration layer consists of a PLC main control unit, human-machine interface, detection unit, and early warning unit. The four operational dimensions consist of a trial run mode, a manual control mode, a system automatic start-stop safety procedure, and an AI model intelligent control mode. The AI ​​model intelligent control mode includes multi-source data acquisition, AI analysis and learning, and intelligent parameter adjustment. It integrates a touchscreen human-machine interface, pH meter, ORP meter, level gauge, various transmitters, and a multi-level alarm system. It features a trial run mode, manual control mode, system automatic start-stop safety procedure, and AI model intelligent control. Combined with AI model technology, the system collects key parameters in real time, such as fan operating status, fan and impeller motor frequency (Hz), equipment differential pressure signal, inlet and outlet differential pressure dynamics, distributed temperature monitoring points, pH value, and exhaust gas inlet and outlet concentrations, constructing a multi-source data sensing network. This enables self-analysis and learning, intelligently adjusting various parameters required by the equipment based on the analysis results to achieve suitable environmental indicators. The integrated intelligent control system achieves self-optimization of operating parameters, fault diagnosis, and remote intervention. Inlet and outlet concentration control system: Both the inlet and outlet of the treatment equipment are equipped with exhaust gas concentration detection equipment to provide real-time feedback on the exhaust gas treatment status. Based on the inlet and outlet concentration, AI simulates and adjusts the system operating power to ensure that the efficiency remains stable at over 95% in the long term, while reducing operating costs.

[0042] The equipment handles air volumes ranging from 5,000 to 100,000 m³ / h, achieving a stable single-stage removal efficiency of ≥95% for odorous gases with concentrations ≤100 mg / m³, and meeting emission standards of the "Odor Pollutant Emission Standard" (GB14554-93). When renovating old livestock farms, existing fans can be flexibly connected via rainproof fabric, eliminating the need for a separate deodorization room; in new sites, stacked installation can be used, reducing the floor space by 80%. During operation, the AI ​​system collects real-time data on exhaust gas concentration, temperature, and humidity, dynamically adjusting fan frequency and spray volume, reducing fan energy consumption by 30%-40% and water pump energy consumption by over 70%.

[0043] The equipment adopts a drawer-type filter design, and the maintenance cycle is once every 6 months. The main maintenance is to check the sensor accuracy and replenish the regeneration fluid. The filter life can reach 3-5 years, and there is no need to stop the machine for disassembly when replacing it. The operating noise is controlled at ≤60dB, which meets the quiet requirements of the breeding site.

[0044] This invention constructs a highly efficient, compact, low-energy-consumption, and intelligent odor gas treatment device through the modification and preparation of targeted functional fibers, the integrated equipment structure design of the fan-integrated device, the application of a four-sided air outlet, the innovation of a circular economy-oriented adsorption-regeneration structure, and the integration of an AI intelligent control system. This device addresses the core pain points of traditional equipment, such as large size, complex installation, high energy consumption, and unstable treatment efficiency, at the structural level. Through the synergistic effect of chemical adsorption and in-situ regeneration, it achieves efficient purification and resource recycling of odor gases.

[0045] The equipment not only boasts excellent processing performance but also offers advantages such as convenient installation, simple maintenance, and wide application range. It can meet the odor control needs of different scales and scenarios, and is particularly suitable for low-cost renovation of small-space livestock sheds and old farms. Its significant economic, environmental, and social benefits provide a new technical solution for odor pollution control and are of great importance in promoting technological innovation and industrial upgrading in the field of environmental engineering. In the future, the adsorption performance of functional fibers and the predictive accuracy of AI models can be further optimized to expand the equipment's application in the treatment of odor gases with higher concentrations and more complex compositions, providing stronger technical support for ecological civilization construction.

[0046] Working principle: First, fix the device on a horizontal base surface to ensure liquid level balance. Then, symmetrically distribute four deodorizing water curtain filter elements composed of targeted functional fiber layers 2 above the circulating water tank 5 to form a three-dimensional purification channel. The filter elements and the equipment frame are connected by snap-fit ​​rings 7 for easy disassembly. Spray pipes 8 are installed along the central axis of the filter elements, and the spray hole spacing is set to 5cm to ensure that the atomized liquid film evenly covers the surface of the filter elements. Spray pipes 8 and circulating water tank 5 are connected through corrosion-resistant pipelines and variable frequency circulating pumps 6 to form a closed-loop circulation system. Finally, it is connected to a PLC-based fully automated control system, which integrates a pH meter, ORP meter, exhaust gas concentration sensor and distributed temperature monitoring points to achieve linkage control with the fan.

[0047] After starting the equipment and connecting it to fan 9, select the operating mode according to the application scenario:

[0048] In summer, open-style breeding sheds adopt a ductless circulation mode to achieve synergistic cooling and deodorization;

[0049] In cold winter regions, the air circulation mode is activated to balance the needs of heat preservation and purification. After the fan is started, the odorous gas enters the equipment through the four-sided air outlet channels, and comes into full contact with the liquid film on the surface of the filter element. The pollutants are transformed through acid-base neutralization and oxidation-reduction reactions.

[0050] Regeneration control: The intermittent spray regeneration mode is adopted. The AI ​​system automatically triggers the regeneration program according to the adsorption saturation of the filter element. The regeneration liquid spraying time is 15-30 seconds, which realizes the rapid and complete regeneration of the targeted functional fiber layer 2. The regeneration process does not interrupt the main purification operation.

[0051] 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 a process, method, article, or apparatus. Standard parts used in this application are all commercially available and can be customized according to the description and drawings. Specific connections of the various parts employ conventional methods mature in the prior art. Machinery, parts, and equipment adopt conventional models in the prior art, and circuit connections adopt conventional connection methods in the prior art, which will not be specifically described here.

[0052] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated fan device for targeted treatment of odorous gases using functional fibers, comprising a housing (1) and a PLC-based fully automated control system, characterized in that: An air inlet (4) is provided on one side of the housing (1). A retaining ring (7) is provided on the top and three side walls of the inner side of the housing (1). A targeted functional fiber layer (2) is installed on the top and three side walls of the inner side of the housing (1) through the retaining ring (7). A circulating water tank (5) is provided at the bottom of the housing (1). A circulating pump (6) is fixedly installed inside the circulating water tank (5). The circulating pump (6) is connected to a spray pipe (8). The spray pipe (8) is located inside the housing (1).

2. The integrated fan device for targeted treatment of odorous gases using functional fibers according to claim 1, characterized in that: Air outlets (11) are provided on three side walls on the top side of the housing (1).

3. The integrated fan device for targeted treatment of odorous gases using functional fibers according to claim 1, characterized in that: A fan (9) is installed at the air inlet (4), and the input end of the fan (9) is connected to an air inlet pipe (10).

4. The integrated fan device for targeted treatment of odorous gases using functional fibers according to claim 1, characterized in that: An AI control panel (3) is installed on one side of the housing (1).

5. The integrated fan device for targeted treatment of odorous gases using functional fibers according to claim 1, characterized in that: The four targeted functional fiber layers (2) are symmetrically distributed on the inner wall of the shell (1).

6. The integrated fan device for targeted treatment of odorous gases using functional fibers according to claim 1, characterized in that: The spray pipes (8) are uniformly arranged along the central axis of the targeted functional fiber layer (2), and the spray holes are distributed in a matrix.

7. The integrated fan device for targeted treatment of odorous gases using functional fibers according to claim 1, characterized in that: The PLC-based fully automated control system includes a hardware integration layer and four operational dimensions.

8. The integrated fan device for targeted treatment of odorous gases using functional fibers according to claim 7, characterized in that: The hardware integration layer consists of a PLC main control unit, human-machine interaction, detection unit and early warning unit, and the four operating dimensions consist of test mode, manual control mode, system automatic start and stop safety program and AI model intelligent control mode.

9. The integrated fan device for targeted treatment of odorous gases using functional fibers according to claim 8, characterized in that: The AI ​​model's intelligent control mode includes multi-source data acquisition, AI analysis and learning, and intelligent parameter adjustment.

10. The integrated fan device for targeted treatment of odorous gases using functional fibers according to claim 1, characterized in that: The targeted functional fiber layer (2) adopts a drawer-type design, and the spray pipe (8) is modularly overlapped with the targeted functional fiber layer (2).

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