Automatic peculiar smell removing system and control method thereof

Abstract

The invention provides an automatic odor removal system and a control method thereof, and the system comprises at least one second purification tower which comprises a second air inlet pipeline, at least one liquid storage tank, an automatically adjustable metering pump, a PLC, a sensor and a second exhaust pipeline; waste gas enters from the second gas inlet pipeline and is exhausted from the second exhaust pipeline; the liquid storage tank is used for storing peculiar smell removing plant liquid with a preset formula; the sensors are arranged in the second gas inlet pipeline and the second gas outlet pipeline, and the sensors are used for monitoring the state of current flowing gas and outputting monitoring data; wherein the gas state at least comprises hydrogen sulfide concentration, ammonia gas concentration, volatile organic compound concentration and wind speed; the PLC controls the automatic adjusting metering pump to pump the peculiar smell removing plant liquid in the liquid storage tank based on a preset rule according to the monitoring data, the PLC monitors the state of gas in the gas inlet / outlet pipeline in real time, the pumping of the preset corresponding peculiar smell removing reagent is controlled, and the pertinence, the environmental protection property and the treatment efficiency of waste gas treatment are improved.

Description

Technical Field

[0001] The present application relates to the technical field of industrial waste gas treatment, and in particular to an automatic odor removal system and a control method thereof. Background Art

[0002] With the acceleration of industrialization, the problem of waste gas emissions has become increasingly serious, especially in the chemical, pharmaceutical, food processing, and waste disposal industries. Common pollutants in waste gas include hydrogen sulfide, ammonia, volatile organic compounds (VOCs), etc. These harmful gases not only affect environmental quality, but also pose a threat to human health. Hydrogen sulfide has a strong odor and toxicity, ammonia irritates the respiratory system, and VOCs are highly volatile in the air, which easily leads to the formation of photochemical smog, further aggravating air pollution. Therefore, waste gas deodorization and purification technology has become a research hotspot in the field of environmental protection today, especially in the treatment of highly polluted and high-concentration industrial waste gas. In order to meet the requirements of environmental protection regulations, more and more companies and environmental protection departments are seeking efficient and low-cost waste gas treatment solutions to achieve the goal of "reducing pollution and reducing carbon emissions."

[0003] At present, the main technologies used in the field of waste gas treatment include: physical adsorption, chemical adsorption, combustion, catalytic oxidation and biological filtration. Traditional physical adsorption usually relies on adsorption materials such as activated carbon to remove pollutants from the gas. This method is widely used in the treatment of low-concentration waste gas. However, when treating high-concentration waste gas, the adsorbent is easy to reach saturation, resulting in a decrease in treatment efficiency, and the adsorption material needs to be replaced frequently, increasing operating costs. The chemical adsorption method combines with harmful components in the waste gas through chemical reactions to achieve the purpose of deodorization and purification. Although this method has a good treatment effect, its main disadvantage is that the consumption of chemical reagents is large and secondary pollution may occur. Combustion and catalytic oxidation are relatively mature high-concentration waste gas treatment technologies. These methods can decompose harmful components in the waste gas through high-temperature oxidation. However, these technologies have high energy consumption and strict requirements on equipment, and are not suitable for all occasions. Biological filtration is one of the technologies that has gradually emerged in recent years. It uses microorganisms to degrade harmful substances in waste gas. This method has a good effect when treating low-concentration waste gas, but its scope of application is limited by the type and concentration of gas. In addition, in recent years, plant extracts have been considered an environmentally friendly and promising means of exhaust gas purification. Plant extracts can effectively remove pollutants such as hydrogen sulfide, ammonia and VOCs by reacting with harmful substances in exhaust gas, and the raw materials of this method are natural, non-toxic and harmless, and environmentally friendly. By combining plant extracts with traditional purification technologies, it is possible to improve the exhaust gas purification efficiency while reducing costs and energy consumption.

[0004] Although the existing waste gas purification technology has solved the problem of pollutant removal to a certain extent, there are still some obvious defects, especially when dealing with high-concentration and complex-component waste gas, the existing technology often faces problems such as low efficiency, high cost and secondary pollution. Many existing waste gas purification systems rely on a single treatment method (such as adsorption, absorption, etc.), which is easy to reach the upper limit of treatment capacity when treating high-concentration or complex waste gas, and the treatment efficiency decreases. At the same time, due to the inability to make real-time adjustments according to changes in waste gas concentration, the treatment effect is often unstable. Existing systems often find it difficult to dynamically adjust the treatment scheme according to changes in waste gas composition and concentration. For example, the amount of plant extractant used has not been accurately controlled, resulting in excessive consumption of plant extractants in some waste gas treatment processes, while some pollutants in the waste gas have not been effectively treated. In the long run, this not only increases operating costs, but also affects the purification effect. Although some modern waste gas treatment systems have begun to apply automated control, most systems can only be processed through preset rules, lacking real-time monitoring and data feedback mechanisms. This makes it impossible for the system to flexibly adjust the treatment strategy when facing complex or changing waste gas components, resulting in the waste gas treatment effect being difficult to maintain stability.

[0005] Complex treatment equipment and high maintenance costs: Some existing waste gas treatment technologies, such as catalytic oxidation and biofiltration, usually have complex treatment equipment and require high maintenance costs. High energy consumption and high maintenance requirements make these technologies difficult to be widely used in small and medium-sized enterprises or specific occasions.

[0006] Therefore, the existing technology has certain bottlenecks in exhaust gas treatment efficiency, automatic adjustment capabilities and cost control, and a new solution is urgently needed to make up for these shortcomings. Summary of the invention

[0007] The purpose of this application is to provide an automatic deodorization system and a control method thereof to solve the above-mentioned problems.

[0008] The purpose of this application is achieved by the following technical solutions:

[0009] In the first aspect, the present application provides an automatic odor removal system, comprising at least one second purification tower, wherein the second purification tower comprises: a second air intake pipe, at least one liquid storage tank, an automatically adjustable metering pump, a PLC, a sensor and a second exhaust pipe; exhaust gas enters from the second air intake pipe and is discharged from the second exhaust pipe; the liquid storage tank is used to store odor-removing plant liquid with a preset formula; the sensor is arranged in the second air intake pipe and the second exhaust pipe, and the sensor is used to monitor the current state of the gas flowing through and output monitoring data; wherein the gas state includes at least: hydrogen sulfide concentration, ammonia concentration, volatile organic compound concentration and wind speed; the PLC controls the automatically adjustable metering pump according to the monitoring data to pump the odor-removing plant liquid in the liquid storage tank based on preset rules.

[0010] The above technical scheme describes the basic structure and working principle of an automatic deodorization system. The system includes at least one second purification tower, which is mainly used to treat odor components in exhaust gas. The purification tower includes multiple key components: a second air intake pipe, a liquid storage tank, an automatically adjustable metering pump, a PLC, a sensor and a second exhaust pipe. The exhaust gas enters the second purification tower through the second air intake pipe, and reacts with the stored deodorizing plant liquid in the tower, and the cleaned exhaust gas is finally discharged through the second exhaust pipe. After the exhaust gas enters the second air intake pipe, it is cleaned by treatment, and before being discharged, the exhaust gas will be discharged through the second exhaust pipe. The liquid storage tank is used to store a specific formula of deodorizing plant liquid, which has the ability to remove specific odors. The sensor is used to monitor the gas state of the exhaust gas when it flows through the pipeline in real time, especially for parameters such as hydrogen sulfide, ammonia, volatile organic compound concentration and wind speed, and the real-time data is fed back to the PLC. The PLC automatically adjusts the workload of the metering pump according to the real-time monitoring data, thereby adjusting the flow of the plant liquid according to the odor concentration of the exhaust gas to ensure the effect and efficiency of the exhaust gas treatment.

[0011] The beneficial effect of this technical solution is that it can automatically adjust the dosage of the deodorizing plant liquid and accurately control the exhaust gas treatment process, thereby improving the effect and stability of exhaust gas purification. By using sensors to monitor the exhaust gas status in real time, the PLC can dynamically adjust the dosage of the plant liquid according to the changing gas concentration to ensure that the odor removal effect always meets the requirements. This automated control method not only improves the efficiency of the system, but also greatly reduces the need for manual intervention and reduces the operation and maintenance costs of the system.

[0012] It also includes a first purification tower, which includes: a first air intake pipe, a packing section and a first exhaust pipe; the first air intake pipe is connected to the packing section where the odor originates; and the first exhaust pipe is connected to the second air intake pipe.

[0013] The above technical solution adds the configuration of the first purification tower, the purpose of which is to pre-treat the exhaust gas and provide purer exhaust gas for the second purification tower. The first purification tower includes a first air intake duct, a packing section and a first exhaust duct. The exhaust gas enters the first purification tower through the first air intake duct, is preliminarily purified in the packing section, and then is connected to the second air intake duct through the first exhaust duct to enter the second purification tower. The packing section of the first purification tower pre-treats most of the odor components in the exhaust gas by means of physical or chemical adsorption. The first exhaust duct is connected to the second air intake duct. After the exhaust gas is treated by the first purification tower, it continues to enter the second purification tower through the second air intake duct for further fine purification.

[0014] The beneficial effect of this technical solution is that the exhaust gas load entering the second purification tower is reduced through the preliminary treatment in the first purification tower, thereby improving the treatment efficiency of the second purification tower. In addition, the two-stage treatment with clear division of labor can more efficiently remove the odor components in the exhaust gas, and help reduce the use of plant liquid and extend its service life, thereby reducing the system operating costs.

[0015] It also includes a fan, which is arranged in the first air intake duct and is used to accelerate the flow of gas in the first air intake duct.

[0016] The above technical solution introduces the configuration of the fan, which is installed in the first air inlet duct and is mainly used to accelerate the flow of gas. The addition of the fan ensures the flow rate of the exhaust gas in the pipeline, avoiding the inability to completely treat the odor components in the exhaust gas due to the slow flow of gas. The fan accelerates the flow of gas and increases the speed and efficiency of the exhaust gas passing through the first purification tower. In this way, it can not only ensure that the exhaust gas enters the second purification tower for further treatment as soon as possible, but also avoid the exhaust gas staying in the first purification tower for too long, thereby improving the treatment efficiency of the system.

[0017] The beneficial effect of this technical solution is that the configuration of the fan increases the flow rate of the exhaust gas and the processing capacity of the overall system, especially when processing large-volume exhaust gas, it can effectively reduce the processing time and improve the efficiency of the overall system. In addition, the introduction of the fan makes the exhaust gas treatment in the purification tower more uniform, ensuring that each part of the exhaust gas can be fully purified and reducing the appearance of "dead corners".

[0018] It also includes a liquid storage tank, which is arranged in the second purification tower and is used to collect soluble salts generated by the reaction of the waste gas in the second purification tower and the deodorizing plant liquid.

[0019] The above technical solution adds a liquid storage tank, which is set in the second purification tower and is mainly used to collect soluble salts generated after the waste gas reacts with the deodorizing plant liquid. This soluble salt is part of the by-products in the waste gas purification process. When the odor components in the waste gas react with the plant liquid, soluble salts are generated, and these by-products need to be effectively collected and treated. The design of the liquid storage tank prevents the reaction by-products from affecting the long-term stability of the system, while providing convenience for subsequent waste treatment.

[0020] The beneficial effect of this technical solution is that the design of the liquid storage tank effectively collects the by-products produced after the reaction, preventing the dissolved salts produced during the waste gas treatment process from causing fouling or corrosion to the equipment. By rationally designing the tank size, waste can be cleaned and replaced in a timely manner, ensuring the stability and efficiency of the system during long-term operation.

[0021] It also includes a waste gas exhaust pipe, which is connected to the second exhaust pipe. A spray device is provided in the waste gas exhaust pipe, and the spray device is used for tail-end treatment of waste gas.

[0022] The above technical solution adds the design of an exhaust pipe, which is connected to the second exhaust pipe and is equipped with a spray device. The spray device is used for tail-end treatment of the exhaust gas to ensure that the exhaust gas fully meets the emission standards. The spray device further treats the exhaust gas to remove tiny particles or residual odor components in the exhaust gas. The liquid in the form of a spray can cover all areas where the exhaust gas flows, ensuring that the exhaust gas is fully treated and meets the emission standards.

[0023] The beneficial effect of this technical solution is that the configuration of the spray device improves the thoroughness of waste gas treatment, especially plays a vital role in removing trace residues and odors. Its function is to ensure that the waste gas achieves a higher purification effect before discharge, while avoiding any untreated gas components from polluting the environment.

[0024] It also includes a liquid level sensor, which is arranged in the liquid storage tank and is used to monitor the liquid level of the deodorizing plant liquid in the liquid storage tank to prevent dry pumping or overflow.

[0025] The above technical solution introduces the configuration of a liquid level sensor, which is installed in the liquid storage tank and is mainly used to monitor the liquid level of the deodorizing plant liquid to prevent dry pumping or overflow. The liquid level sensor monitors the liquid level of the plant liquid in the liquid storage tank in real time to ensure that the plant liquid can be replenished in time when the liquid level is too low, thereby preventing the metering pump from dry pumping due to lack of liquid. At the same time, when the liquid level is too high, the liquid level sensor can also remind the system to automatically stop pumping the plant liquid to avoid overflow of the system.

[0026] The beneficial effect of this technical solution is that the liquid level sensor ensures the safe use of the plant liquid in the storage tank and prevents equipment damage or waste caused by improper liquid level. This design improves the stability and safety of the system and avoids the risk of failure due to human negligence. The liquid level monitoring system can effectively ensure the continuous and stable supply of odor-removing plant liquid and optimize the overall operation of the system.

[0027] It also includes an Internet of Things communication device, which is used to collect the monitoring data output by the sensor in real time and display it remotely, and remotely control the PLC at the same time.

[0028] The above technical solution describes the configuration of the IoT communication device, which is used to collect sensor data in real time, display the data remotely, and remotely control the PLC. The device can transmit the data output by each sensor to the monitoring platform through the network, and display the gas state and purification effect of the exhaust gas in real time. At the same time, users can adjust the parameters of the PLC through the remote control function to optimize the deodorization process.

[0029] The beneficial effect of this technical solution is that the introduction of the Internet of Things communication device makes system management more intelligent, and users can monitor the exhaust gas treatment process at any time and any place, and make adjustments based on real-time data. This not only improves the convenience and efficiency of the system, but also reduces the errors and delays caused by manual monitoring.

[0030] The second purification tower is connected in series with another second purification tower.

[0031] The above technical solution involves the configuration of a second purification tower connected in series with another second purification tower. The design purpose is to increase the processing capacity of the system by connecting multiple purification towers in series, so as to cope with the waste gas treatment needs of a larger flow rate, and at the same time, to generate linkage with the sensors set in the second air intake pipe and the second exhaust pipe of each second purification tower, and to further optimize the waste gas treatment process by simultaneously monitoring the gas state of multiple second purification towers and returning the data to the PLC. In this configuration, multiple second purification towers are connected in series, and the waste gas first enters the first second purification tower. After purification, the gas flows through the second second purification tower for further treatment. Through such a series configuration, the purification efficiency of the system can be significantly improved and more waste gas can be treated. Each purification tower can exert its maximum purification effect, and at the same time share the processing burden to prevent a single purification tower from overloading during the treatment process. The purification towers in series can work together, and the PLC system can monitor the treatment effect of each purification tower and dynamically adjust the working state of each tower according to actual needs. For example, when the processing capacity of the first second purification tower reaches its limit, the PLC can introduce more waste gas into the second purification tower to ensure the continuous and efficient operation of the entire system.

[0032] The beneficial effect of this technical solution is that by connecting multiple second purification towers in series, the system can significantly improve the waste gas treatment capacity. The workload of each purification tower is shared, and a larger flow of waste gas can be treated, which is particularly important for large-scale production or industrial environments with large waste gas emissions. The series design makes the system more flexible and scalable. When it is necessary to increase the waste gas treatment capacity, additional second purification towers can be simply added without redesigning the entire system. Each purification tower can work independently or dynamically adjust according to demand to flexibly respond to different treatment needs. By connecting multiple purification towers in series, the system can purify waste gas more efficiently. After the waste gas is initially treated in the first purification tower, it can enter the second purification tower for more in-depth purification to ensure a higher removal rate. This hierarchical treatment method greatly improves the efficiency of waste gas purification, especially in complex or high-concentration waste gas treatment scenarios. The series configuration reduces the processing burden of each purification tower and avoids the risk of equipment damage or performance degradation due to overuse. This not only extends the service life of the equipment, but also reduces the frequency of repairs and replacement of parts, reducing long-term operating costs. The real-time monitoring and adjustment of the series purification towers by the PLC system can ensure that the working state of each purification tower is always in the best working condition, avoiding system shutdown or failure caused by overload of a single purification tower. In addition, the ability of real-time monitoring and adjustment makes the maintenance and management of the system more efficient, and can timely discover and solve potential problems.

[0033] In the second aspect, the present application provides a control method for an automatic deodorization system, including: a sensor in a second air intake duct, monitoring the gas state of the exhaust gas in real time, and generating first monitoring data; a PLC selects a deodorizing plant liquid in a liquid storage tank based on preset rules according to the first monitoring data, and pumps the deodorizing plant liquid through an automatically adjustable metering pump and transports it to a second purification tower; in the second purification tower, the deodorizing plant liquid reacts with the exhaust gas, and the exhaust gas enters the second exhaust duct after the reaction; a sensor in the second exhaust duct, monitoring the gas state of the exhaust gas after the reaction in real time, and generating second monitoring data; the PLC determines the exhaust gas treatment effect according to the second monitoring data, and controls the start and stop of the spray device according to the exhaust gas treatment effect.

[0034] The above technical solution describes a control method for an automatic deodorization system, including real-time monitoring of exhaust gas flow through the pipeline, pumping control of plant liquid, evaluation of exhaust gas treatment effect, and start and stop of the spray device. The gas state of the exhaust gas is monitored by sensors to generate first monitoring data. The PLC controls the metering pump based on these data to adjust the delivery volume of the plant liquid. The exhaust gas treated by the second purification tower is monitored again by the sensor to generate second monitoring data. The PLC evaluates the exhaust gas treatment effect based on the second monitoring data and decides whether to start the spray device.

[0035] The beneficial effects of this technical solution are: through real-time monitoring and automatic control, the efficiency and response speed of the deodorization system are effectively improved. PLC can adjust the pumping amount of plant liquid according to the actual exhaust gas concentration and treatment effect to ensure the accuracy and stability of exhaust gas treatment. The start and stop control of the spray device can further ensure that the exhaust gas emissions meet the standards and avoid excessive or insufficient treatment.

[0036] The PLC optimizes the pumping volume of the automatic regulating metering pump based on the first monitoring data and the second monitoring data, specifically including: when the exhaust gas purification rate calculated based on the first monitoring data and the second monitoring data is lower than the first preset threshold, and the second monitoring data shows that the exhaust gas concentration is higher than the second preset threshold, controlling the automatic regulating metering pump to increase the pumping volume; when the exhaust gas purification rate calculated based on the first monitoring data and the second monitoring data meets the first preset threshold, but the second monitoring data shows that the exhaust gas concentration is higher than the second preset threshold, controlling the automatic regulating metering pump to increase the pumping volume; when the exhaust gas purification rate calculated based on the first monitoring data and the second monitoring data is higher than the first preset threshold, and the second monitoring data shows that the exhaust gas concentration is lower than the second preset threshold, modifying the first preset threshold to reduce the required purification rate under current conditions.

[0037] The above technical solution describes in detail how the PLC optimizes the pumping volume of the metering pump based on the monitoring data to ensure that the exhaust gas treatment achieves the best effect. According to the exhaust gas purification rate calculated by the first monitoring data and the second monitoring data, the PLC controls the pumping volume of the metering pump according to the preset rules. For example, when the exhaust gas purification rate is lower than the preset threshold, the PLC increases the pumping volume to improve the exhaust gas purification effect.

[0038] The beneficial effect of this technical solution is that by automatically adjusting the pumping volume, the system can dynamically adapt to changes in exhaust gas concentration to ensure that the purification effect always meets the requirements. This intelligent control method improves the system's processing efficiency, reduces the need for manual intervention, reduces operational risks, and ensures that exhaust gas emissions meet environmental standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0040] Figure 1 is a schematic diagram of an automatic deodorization system provided in an embodiment of the present application;

[0041] Figure 2 It is a flow chart of a control method of an automatic deodorization system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0042] Below, the present application is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0043] In the embodiments of the present application, the words "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any implementation or design scheme described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other implementations or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0044] See also Figure 1 , the embodiment of the present application provides an automatic deodorization system, comprising:

[0045] At least one second purification tower, the second purification tower comprising: a second air intake pipeline, at least one liquid storage tank, an automatically adjustable metering pump, a PLC, a sensor, and a second exhaust pipeline;

[0046] Exhaust gas enters through the second air intake pipe and is discharged through the second exhaust pipe;

[0047] The liquid storage tank is used to store a deodorizing plant liquid with a preset formula;

[0048] The sensor is arranged in the second air intake pipe and the second air exhaust pipe, and the sensor is used to monitor the current state of the gas flowing through and output monitoring data;

[0049] Wherein, the gas state includes at least: hydrogen sulfide concentration, ammonia concentration, volatile organic compound concentration and wind speed;

[0050] The PLC controls the automatically adjustable metering pump to pump the deodorizing plant liquid in the liquid storage tank based on preset rules according to the monitoring data.

[0051] Also included is a first purification tower, the first purification tower comprising: a first air inlet pipeline, a packing section and a first exhaust pipeline;

[0052] The first air intake duct is connected to the packing section where the odor originates;

[0053] The first exhaust pipe is connected to the second intake pipe.

[0054] It also includes a fan, which is arranged in the first air intake duct, and is used to accelerate the flow of gas in the first air intake duct. It also includes a liquid storage tank, which is arranged in the second purification tower, and is used to collect soluble salts generated by the reaction of exhaust gas and the deodorizing plant liquid in the second purification tower. It also includes an exhaust pipe for waste gas, which is connected to the second exhaust duct, and a spray device is arranged in the exhaust pipe for waste gas, and the spray device is used for tail-end treatment of waste gas. It also includes a liquid level sensor, which is arranged in the liquid storage tank, and is used to monitor the liquid level of the deodorizing plant liquid in the liquid storage tank to prevent dry pumping or overflow. It also includes an Internet of Things communication device, which is used to collect the monitoring data output by the sensor in real time and display it remotely, and remotely control the PLC at the same time.

[0055] The second purification tower is connected in series with another second purification tower.

[0056] See also Figure 2 ,This embodiment provides a control method for an automatic deodorization system, including: a sensor in a second air intake duct, monitoring the gas state of the exhaust gas in real time, and generating first monitoring data;

[0057] The PLC selects the deodorizing plant liquid in the liquid storage tank based on the preset rules according to the first monitoring data, pumps the deodorizing plant liquid through an automatically adjustable metering pump and delivers it to the second purification tower;

[0058] In the second purification tower, the deodorizing plant liquid reacts with the waste gas, and after the reaction, the waste gas enters the second exhaust pipe;

[0059] A sensor in the second exhaust pipe monitors the gas state of the exhaust gas after the reaction in real time and generates second monitoring data;

[0060] The PLC determines the exhaust gas treatment effect according to the second monitoring data, and controls the start and stop of the spray device according to the exhaust gas treatment effect. The PLC optimizes the pumping volume of the automatic regulating metering pump based on the first monitoring data and the second monitoring data, specifically including:

[0061] When the exhaust gas purification rate calculated based on the first monitoring data and the second monitoring data is lower than a first preset threshold value, and the second monitoring data shows that the exhaust gas concentration is higher than a second preset threshold value, controlling the automatic regulating metering pump to increase the pumping volume;

[0062] When the exhaust gas purification rate calculated based on the first monitoring data and the second monitoring data meets the first preset threshold, but the second monitoring data shows that the exhaust gas concentration is higher than the second preset threshold, the automatic regulating metering pump is controlled to increase the pumping volume;

[0063] When the exhaust gas purification rate calculated based on the first monitoring data and the second monitoring data is higher than the first preset threshold, and the second monitoring data shows that the exhaust gas concentration is lower than the second preset threshold, the first preset threshold is modified to reduce the required purification rate under current conditions.

[0064] In a specific embodiment, real-time monitoring of exhaust gas status The exhaust gas first enters the system through the second air intake pipe, and multiple gas sensors are set in the pipe to monitor the concentration of hydrogen sulfide, ammonia, volatile organic compounds (VOCs) in the exhaust gas, as well as key parameters such as wind speed. The sensor transmits the monitoring data to the PLC controller in real time. Analyze the exhaust gas concentration data The PLC controller performs data analysis according to the preset rules based on the exhaust gas concentration data received from the sensor. When the concentration of a certain pollutant is monitored to exceed the set threshold, the control system triggers the corresponding treatment measures. For example, when the hydrogen sulfide concentration exceeds the preset 5ppm or the ammonia concentration exceeds 20ppm, the PLC controller will start the automatic adjustment metering pump of the deodorizing plant liquid. Control the pumping of the plant extract According to the analysis results of the exhaust gas concentration, the PLC controller adjusts the pumping volume of the automatic adjustment metering pump, extracts an appropriate amount of plant extract from the liquid storage tank, and transports it to the second purification tower. The plant extract reacts with the harmful components in the exhaust gas to remove pollutants such as hydrogen sulfide, ammonia and VOCs in the exhaust gas. The waste gas enters the second exhaust pipe. The treated waste gas enters the second exhaust pipe and is discharged to the outside. A second sensor is installed in the exhaust pipe to continue to monitor the quality of the treated waste gas. Optimize metering pump control according to the waste gas treatment effect. The PLC controller determines the waste gas purification effect based on the waste gas data returned by the second sensor and automatically adjusts the pumping volume of the plant extract. If the purification effect does not meet expectations, the PLC controller will increase the pumping volume of the plant extract; if the waste gas concentration has dropped to the ideal level, the pumping volume can be reduced to reduce energy consumption and chemical consumption.

[0065] In another embodiment, the device of the present invention is mainly composed of two parts: a first purification tower and a second purification tower. The first purification tower is used to preliminarily treat the exhaust gas and remove some bulk pollutants, and the second purification tower further finely purifies the exhaust gas. The system also includes components such as a liquid storage tank, an automatically adjustable metering pump, a PLC controller, a gas sensor, and a fan. Exhaust gas enters the system. The exhaust gas first enters the first purification tower through the first air intake pipe. In the first purification tower, the exhaust gas is treated by the packing section and the purification medium, and is fully contacted with the purification liquid to remove some pollutants. The treated exhaust gas enters the second purification tower through the second air intake pipe. The packing section and the adsorption medium in the first purification tower of exhaust gas pretreatment remove particulate matter and a part of volatile organic compounds (VOCs) in the exhaust gas through physical and chemical effects. A fan is arranged above the first purification tower to accelerate the flow of exhaust gas and improve the purification efficiency. Deodorizing plant liquid sprays the pretreated waste gas into the second purification tower, where the deodorizing plant liquid is evenly sprayed into the waste gas through a spray device. The plant extract reacts with pollutants such as hydrogen sulfide, ammonia, and VOCs in the waste gas to remove these harmful components. The PLC controller adjusts the flow of the plant extract according to the sensor monitoring data to ensure the high efficiency of waste gas purification. Waste gas emission and purification effect monitoring The treated waste gas is discharged through the second exhaust pipe. A second sensor is installed in the exhaust pipe to monitor the concentration of residual pollutants in the waste gas in real time. If the treatment effect is not up to standard, the PLC controller will adjust the release amount of the plant extract or start other auxiliary equipment (such as a spray device) according to the monitoring data.

[0066] The entire process ensures effective odor removal through waste gas collection, multi-stage treatment of the odor removal tower, efficient contact of the packing section, and flexible adjustment of the manual formula. Through dynamic monitoring and adjustment, it can adapt to different waste gas components and concentration changes to achieve efficient and environmentally friendly odor removal effects. The process example is as follows:

[0067] The odor source collects odorous waste gas from the production process or other sources, and guides the waste gas to the odor purification tower through the pipeline. It enters the first purification tower tangentially from the air inlet below the tower body. Under the power of the fan, it quickly fills the air inlet section space, and then evenly rises to the packing absorption section through the flow equalization section. After the packing section, it undergoes preliminary physical / chemical absorption.

[0068] Through the action of the filler, some larger particles and odor components are removed, and the purified gas is discharged through the top of the tower. The gas that is not completely absorbed continues to rise and enters the second purification tower. After entering, on the surface of the filler, the dirt in the gas phase reacts chemically with the substances in the liquid phase. The soluble salt generated by the reaction flows into the lower storage tank with the absorption liquid. According to the concentration of odor components provided by the monitoring system, the composition and concentration of the plant liquid are dynamically adjusted. The adjusted plant liquid is added to the second deodorization tower to ensure the best treatment effect. The spray device adds natural plant liquid to the gas, and the active ingredients in the plant liquid react with the odor molecules to remove the odor.

[0069] A spraying device can also be installed at the exhaust gas outlet to spray natural plant liquid into the treated gas. The components in the plant liquid react with the trace odor molecules in the gas to ensure that the final exhaust gas quality meets environmental protection standards.

[0070] The purified gas is discharged through the exhaust gas outlet for final quality inspection. If the gas quality meets the standard, it is safely discharged; the entire process ensures effective removal of odor through exhaust gas collection, physical treatment in the first deodorization tower, efficient contact in the packing section, chemical treatment in the second deodorization tower, flexible adjustment of manual formula, and final treatment of adding natural plant liquid at the exhaust gas outlet. Through dynamic monitoring and adjustment, it can adapt to different exhaust gas components and concentration changes, and achieve efficient and environmentally friendly deodorization effects.

[0071] Conventional systems usually use only a single treatment tower, which has low treatment efficiency. The multi-tower design improves the overall removal efficiency by treating in stages, ensuring more thorough purification.

[0072] The artificial formula setting mechanism is introduced to adjust the composition and concentration of natural plant liquid according to real-time monitoring data. Conventional designs often use fixed formulas and cannot adapt to the changes in different exhaust gas components. The dynamic adjustment mechanism enables the system to flexibly respond to different odor components, improving the pertinence and effectiveness of treatment.

[0073] A spray device is installed in the exhaust pipe to treat the exhaust gas with natural plant liquid at the tail end. Conventional designs usually discharge directly after treatment, lacking the final quality control. This design ensures that even trace amounts of odor components can be removed, further improving the quality of the exhaust gas.

[0074] In a better embodiment, automatic detection, dynamic adjustment and automatic addition modules are introduced, and the deodorization system is significantly improved in terms of intelligence, automation and environmental protection. It can respond to complex changes in exhaust gas components more efficiently and flexibly, ensure that the quality of exhaust gas meets environmental protection standards, and has strong market competitiveness and application prospects. In a specific example, the system includes a natural plant liquid management module, and the management module includes: an automatic formula addition module and a data acquisition instrument module. The automatic formula addition module includes multiple liquid storage tanks, an automatically adjustable metering pump, a PLC (programmable logic controller), and multiple preset formulas of plant liquids are stored in different dedicated liquid storage tanks, and the automatically adjustable metering pump is connected to different liquid storage tanks through pipes.

[0075] The data acquisition instrument module may include sensors, anemometers, flow meters, pressure sensors, and liquid level sensors. Sensors are used to monitor the components of exhaust gas in real time, such as hydrogen sulfide, ammonia, volatile organic compounds (VOCs), etc. Physical or chemical signals are converted into electrical signals for processing by the PLC. The sensor transmits the collected data to the PLC, which analyzes the data to determine the current composition and concentration of the exhaust gas, thereby selecting a suitable plant solution formula. The flow meter is used to measure the flow rate of the plant solution delivered by the automatically adjustable metering pump. The flow meter feeds back the real-time flow data to the PLC, which can compare the actual flow rate with the preset flow rate to ensure that the amount of plant solution added meets the requirements. If the flow rate deviates, the PLC will adjust the working state of the automatically adjustable metering pump. The anemometer monitors the air flow velocity in real time, and converts the measured wind speed data into electrical signals and transmits them to the PLC. After receiving the wind speed data, the PLC performs real-time analysis. If the wind speed exceeds or falls below the set threshold, the PLC can determine whether the current air flow state is normal. If the wind speed is too low, the PLC may increase the speed of the fan to increase the airflow; if the wind speed is too high, the PLC may reduce the speed of the fan to avoid excessive emissions. Real-time monitoring of the anemometer can help the system optimize airflow management and ensure that the airflow speed during the exhaust gas treatment process remains within the optimal range, thereby improving treatment efficiency. The pressure sensor transmits pressure data to the PLC, and the PLC can determine whether there are problems such as blockage or leakage based on the pressure change. If the pressure is abnormal, the PLC can issue an alarm and adjust the working state of the automatically adjustable metering pump to protect the safety of the system. A liquid level sensor can also be set in the liquid storage tank to monitor the liquid level of the plant liquid in the liquid storage tank to ensure that the liquid level is within a safe range to avoid dry pumping or overflow. The liquid level sensor feeds back the liquid level data to the PLC, and the PLC can control the start and stop of the automatically adjustable metering pump based on the liquid level changes. If the liquid level is too low, the PLC can stop the automatically adjustable metering pump to prevent dry pumping; if the liquid level is too high, the PLC can issue an alarm or take measures to prevent overflow.

[0076] Since the automatically adjustable metering pump has good flow control accuracy, it can achieve accurate addition of plant liquid, ensuring that the amount of liquid added each time meets the formula requirements calculated by the PLC. During the addition process, the automatically adjustable metering pump can provide feedback to the PLC to ensure that the actual amount of liquid added is consistent with the preset value. If there is a deviation, the PLC can adjust the working state of the automatically adjustable metering pump in time to ensure the accuracy of the formula.

[0077] The control logic built into the PLC will process and analyze the collected data. According to the preset algorithm, the PLC can determine the composition and concentration of the current exhaust gas, and match it with the formula in the pre-established plant liquid formula library. Based on the analysis results, the PLC will select the plant liquid formula that best suits the current exhaust gas composition. This process can be rule-based (such as selecting a high-concentration plant liquid when the concentration is high) or model-based (such as a machine learning model). The amount of plant liquid added is a variable, which is determined by the PLC based on various parameters. The determination method is to calculate the corresponding treatment agent in proportion to the concentration of gases such as hydrogen sulfide and ammonia.

[0078] The pre-formulated plant liquid formula includes a manual formula setting mechanism. In odor removal work, manually smelling the odor to judge and select the plant liquid formula is a traditional and effective method, especially in some special cases, automated equipment may not be able to completely replace the human sense of smell. The operator first identifies the type of odor (such as rancidity, chemical odor, sourness, etc.) by sniffing the gas sample. After identifying the odor, the operator will record the characteristics of the odor, including intensity, duration and changes. Based on the type of odor identified, the operator will refer to the pre-formulated plant liquid formula library. Each plant liquid has its own specific odor masking or neutralization ability, and the operator will define the formula matching rules that best suit the current odor.

[0079] Once the recipe is determined, the PLC generates control signals to indicate the working status of the metering pump, including start, stop and flow adjustment, which can be automatically adjusted.

[0080] In the process of selecting plant liquids with different formulas, the PLC and the automatically adjustable metering pump work together to form an efficient automation system. The PLC is responsible for data collection, analysis and decision-making, while the automatically adjustable metering pump is responsible for accurately adding plant liquid according to the instructions of the PLC. In this way, the system can flexibly respond to different changes in exhaust gas components, achieve dynamic adjustment and optimization, and ensure the stability and environmental protection of the treatment effect.

[0081] In a preferred embodiment, the automatic formula addition module also includes a backup liquid storage tank. The backup liquid storage tank is used to store those relatively expensive or infrequently used natural plant liquid formulas. These formulas may not be commonly used in daily operations, but they are necessary in specific situations. When the formula in the main liquid storage tank cannot meet current needs, the backup liquid storage tank can quickly provide the required plant liquid to ensure the continuity and effectiveness of the system. Once the trigger condition is met, the system will automatically switch to the backup liquid storage tank. At this time, the system will select the backup formula that best suits the current situation. The formulas stored in the backup liquid storage tank are usually for specific smells or situations, and the system will select the most appropriate formula for addition based on real-time monitoring data.

[0082] The backup tank provides a flexible response plan that can quickly adapt to different odor situations to ensure treatment effectiveness.

[0083] By centrally storing less frequently used and expensive formulas, companies can reduce costs while still having quick access to the botanicals they need when they need them.

[0084] The backup tank plays a vital role in the automatic formula addition module, providing necessary support when the main tank cannot meet the demand. Through real-time monitoring, automatic switching and dosage control, the backup tank ensures the flexibility and efficiency of the system while reducing costs and risks. Regular maintenance and data recording will further improve the management level of the backup tank and ensure its reliability at critical moments.

[0085] In a more preferred embodiment, the automatic formula addition module also includes an Internet of Things communication module, which can collect data from sensors in real time, including information such as odor concentration, temperature, humidity, etc. Through Internet of Things communication, operators can remotely monitor the operating status of the system and obtain the working status and fault alarms of the equipment in a timely manner. Operators can send instructions to the equipment through the Internet of Things platform, such as starting a backup liquid storage tank or adjusting the dosage of the formula addition.

[0086] It should also be noted that in the above-mentioned specific implementation methods, in order to ensure the accuracy of the judgment, various monitoring means can be used to assist in the judgment of well-to-well interference without contradiction, including but not limited to adjacent well pressure monitoring, optical fiber monitoring, tracer monitoring and other methods. This method has been verified to be reliable in multiple wells through adjacent well pressure monitoring, optical fiber monitoring, and tracer monitoring. The results of the method are reliable and have strong applicability.

[0087] This application is explained from the perspectives of purpose of use, effectiveness, progress and novelty, and has met the functional enhancement and usage requirements emphasized by the Patent Law. The above description and drawings of this application are only the preferred embodiments of this application, and are not intended to limit this application. Therefore, all structures, devices, features, etc. that are similar or identical to this application, that is, all equivalent replacements or modifications made in accordance with the scope of the patent application of this application, should fall within the scope of protection of the patent application of this application.

Claims

1. An automatic deodorization system, characterized in that: include: At least one second purification tower, the second purification tower comprising: a second air intake pipeline, at least one liquid storage tank, an automatically adjustable metering pump, a PLC, a sensor, and a second exhaust pipeline; Exhaust gas enters through the second air intake pipe and is discharged through the second exhaust pipe; The liquid storage tank is used to store a deodorizing plant liquid with a preset formula; The sensor is arranged in the second air intake pipe and the second air exhaust pipe, and the sensor is used to monitor the current state of the gas flowing through and output monitoring data; Wherein, the gas state includes at least: hydrogen sulfide concentration, ammonia concentration, volatile organic compound concentration and wind speed; The PLC controls the automatically adjustable metering pump to pump the deodorizing plant liquid in the liquid storage tank based on preset rules according to the monitoring data.

2. A system according to claim 1, characterized in that: Also included is a first purification tower, the first purification tower comprising: a first air inlet pipeline, a packing section and a first exhaust pipeline; The first air intake duct is connected to the packing section where the odor originates; The first exhaust pipe is connected to the second intake pipe.

3. A system according to claim 2, characterized in that: It also includes a fan, which is arranged in the first air intake duct and is used to accelerate the flow of gas in the first air intake duct.

4. A system according to claim 2, characterized in that: It also includes a liquid storage tank, which is arranged in the second purification tower and is used to collect soluble salts generated by the reaction of the waste gas in the second purification tower and the deodorizing plant liquid.

5. A system according to claim 2, characterized in that: It also includes a waste gas exhaust pipe, which is connected to the second exhaust pipe. A spray device is provided in the waste gas exhaust pipe, and the spray device is used for tail-end treatment of waste gas.

6. A system according to claim 2, characterized in that: It also includes a liquid level sensor, which is arranged in the liquid storage tank and is used to monitor the liquid level of the deodorizing plant liquid in the liquid storage tank to prevent dry pumping or overflow.

7. A system according to claim 2, characterized in that: It also includes an Internet of Things communication device, which is used to collect the monitoring data output by the sensor in real time and display it remotely, and remotely control the PLC at the same time.

8. A system according to claim 2, characterized in that: The second purification tower is connected in series with another second purification tower.

9. A control method for an automatic deodorization system, characterized in that: include: A sensor in the second air intake duct monitors the gas state of the exhaust gas in real time and generates first monitoring data; The PLC selects the deodorizing plant liquid in the liquid storage tank based on the preset rules according to the first monitoring data, and pumps the deodorizing plant liquid through an automatically adjustable metering pump and delivers it to the second purification tower; In the second purification tower, the deodorizing plant liquid reacts with the waste gas, and after the reaction, the waste gas enters the second exhaust pipe; A sensor in the second exhaust pipe monitors the gas state of the exhaust gas after the reaction in real time and generates second monitoring data; The PLC determines the exhaust gas treatment effect according to the second monitoring data, and controls the start and stop of the spray device according to the exhaust gas treatment effect.

10. The method according to claim 9, characterized in that The PLC optimizes the pumping volume of the automatic regulating metering pump based on the first monitoring data and the second monitoring data, specifically including: When the exhaust gas purification rate calculated based on the first monitoring data and the second monitoring data is lower than a first preset threshold value, and the second monitoring data shows that the exhaust gas concentration is higher than a second preset threshold value, controlling the automatic regulating metering pump to increase the pumping volume; When the exhaust gas purification rate calculated based on the first monitoring data and the second monitoring data meets the first preset threshold, but the second monitoring data shows that the exhaust gas concentration is higher than the second preset threshold, the automatic regulating metering pump is controlled to increase the pumping volume; When the exhaust gas purification rate calculated based on the first monitoring data and the second monitoring data is higher than the first preset threshold, and the second monitoring data shows that the exhaust gas concentration is lower than the second preset threshold, the first preset threshold is modified to reduce the required purification rate under current conditions.

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