Continuous Monitoring and Extraction System of Stickies in Papermaking White Water and Its Application

Abstract

The present invention provides a system for continuously monitoring and extracting stickies from papermaking white water, and an application for extracting stickies. The system includes a mounting frame, a white water sampling system, a sample pretreatment system, a hot air separation system, a negative pressure extraction system, and an integrated isolation structure. The system uses a sampling port provided on the white water delivery pipeline and a cyclic rotation mechanism of a sampling pulp plate to continuously collect, separate, and extract stickies from the white water. Based on the differences in the physical properties of dissolved wood fiber and stickies, the two are separated using hot air drying and differential adsorption technology. The system is equipped with an intelligent control unit that can monitor changes in stickies content 24 hours a day. The application method includes four steps: continuous extraction, real-time analysis, dynamic feedback control, and adaptive production optimization. The monitoring data is converted into production control instructions to form a closed-loop control system. This effectively reduces the adverse effects of stickies on the papermaking system, and reduces equipment blockages and paper defects.

Description

Technical Field

[0001] The present invention relates to the field of papermaking industrial equipment, and in particular to an intelligent system for continuous monitoring, separation and extraction of stickies in a papermaking white water circulation system and an application method thereof. Background Art

[0002] Currently, monitoring stickies in papermaking white water primarily relies on traditional offline analysis methods. Chinese patent CN101424634B discloses a method for measuring the concentration of organic matter in papermaking white water based on UV-visible spectroscopy. This method utilizes dual-wavelength technology by selecting specific wavelengths in the ultraviolet (200nm-400nm) and near-infrared (700nm-1100nm) regions to eliminate interference from components such as fibers and fillers, enabling quantitative analysis of soluble and colloidal organic matter. While this method offers improvements over traditional extraction methods, it still suffers from the following deficiencies:

[0003] First, while this method can measure the total amount of soluble and colloidal organic matter in papermaking white water, it cannot distinguish between different types of organic matter. In particular, it lacks the ability to specifically identify and quantify stickies, the most serious type of substance that impacts paper production. Due to their unique physical and chemical properties (such as adhesion and sedimentation), stickies can cause serious equipment blockages and paper surface defects even at relatively low concentrations, necessitating a more precise monitoring method.

[0004] Secondly, existing measurement methods are mostly static, failing to dynamically monitor the formation and accumulation of stickies. During papermaking, the generation and accumulation of stickies exhibit distinct dynamic characteristics, influenced by a variety of factors, including raw material composition, production process parameters, and ambient temperature. The lack of continuous monitoring makes it difficult for production operators to promptly detect changes in sticky accumulation trends, hindering their ability to implement preventative measures to prevent production problems.

[0005] Third, most existing measurement methods require sample pretreatment, such as centrifugation and filtration. This not only increases operational complexity but also prolongs analysis time, making it difficult to meet the demand for rapid stickies monitoring during production. In real-world production environments, sudden changes in stickies levels can lead to serious production failures in a short period of time, necessitating monitoring technologies that can respond in real time.

[0006] Finally, existing technologies lack an effective way to integrate monitoring data with production control systems. Simply obtaining stickies content data without being able to translate it into production control instructions makes it difficult to fully leverage monitoring technology in optimizing production processes. Summary of the Invention

[0007] The purpose of the present invention is to provide a continuous monitoring, separation and extraction system for stickies in papermaking white water and its application method. The system can monitor and extract stickies in papermaking white water in real time and accurately, provide data support and decision-making basis for the papermaking production process, and effectively reduce the adverse effects of stickies on the papermaking system.

[0008] According to one aspect of the present invention, a continuous monitoring, separation and extraction system for stickies in papermaking white water is provided, comprising: a mounting frame, a white water sampling system, a sample pretreatment system, a hot air separation system, a negative pressure extraction system and an integrated isolation structure.

[0009] Specifically, an integrated isolation frame is provided inside the mounting frame, and the two together constitute a closed sampling space; the mounting frame is arranged at the branch or sampling port of the white water conveying pipeline, and is used for seamless integration with the white water circulation system of the paper production line; the white water sampling system is used to extract white water samples from the white water conveying pipeline and transport them to the closed sampling space to achieve stable acquisition of samples; the sample pretreatment system includes a rotatable sampling component, and the sampling component is provided with a plurality of sampling pulp plates distributed along the circumferential direction, which are used to adsorb white water samples from the closed sampling space; the hot air separation system includes a hot air drying part and a separation adsorption part, which are used to dry the white water samples on the sampling pulp plates and separate the wood fiber dissolved substances; the negative pressure extraction system includes an extraction shell and an adsorption component, which are used to extract and collect adhesives from the sampling pulp plates, and a removable extraction container box is provided in the extraction shell; the integrated isolation structure forms a separation isolation station and an extraction isolation station at the positions of the hot air separation system and the negative pressure extraction system, respectively, which are used to isolate the working areas of each station to prevent mutual interference.

[0010] The system rotates the sampling assembly, passing the sampling pulp plate through the whitewater sample, hot air separation system, and negative pressure extraction system within the closed sampling space. Based on the differences in the physical properties of dissolved wood fiber and stickies, particularly in terms of water absorption and viscosity, the system continuously monitors and efficiently extracts stickies from the whitewater. The system eliminates the need for additional dissolution of recycled paper materials and extracts samples directly from the whitewater pipeline or sedimentation tank outlet, significantly improving monitoring efficiency and data continuity.

[0011] As a preferred embodiment of the present invention, the sampling slurry plate is made of a porous composite material, including a stainless steel base and a specialized polymer coating. This design combines the mechanical strength of the stainless steel base with the selective adsorption capabilities of the specialized polymer coating. Specifically designed for the capture of stickies in whitewater, it offers corrosion resistance, abrasion resistance, and ease of cleaning, significantly improving the capture capacity and system lifespan.

[0012] As a preferred embodiment of the present invention, the hot air drying section utilizes a segmented temperature gradient control design, with the inlet temperature at 45±2°C, the middle temperature at 55±2°C, and the outlet temperature at 65±2°C. Each temperature zone is equipped with an independent control system. This precise temperature control ensures that stickies of varying properties are properly treated without altering their chemical structure, improving separation efficiency and the accuracy of monitoring data.

[0013] As a preferred embodiment of the present invention, the adsorption force of the first adsorption element of the separation adsorption section is greater than the adsorption force of the sampling pulp plate on the whitewater sample membrane. The adsorption assembly includes a second adsorption element, whose adsorption force is greater than that of the first adsorption element. This adsorption force gradient design ensures that different components can be separated step by step during the process: first, the wood fibers are separated by suction under the action of the first adsorption element due to the weight reduction after drying. Then, the sampling pulp plate rotates to the negative pressure extraction system, and the remaining stickies are completely sucked and collected by the stronger adsorption force of the second adsorption element, achieving efficient separation of stickies and wood fibers.

[0014] As a preferred embodiment of the present invention, the integrated isolation structure comprises a rubber isolation plate with a long slit adapted to the sample plate's dimensions, defined along the sample plate's rotational path. This specialized silicone rubber material not only offers excellent sealing and suitable elasticity, automatically yielding to the sample plate's passage and subsequently resetting the seal, but also maintains long-term stability in whitewater environments, resisting aging and deformation due to prolonged exposure to chemicals. This effectively mitigates potential interference issues when multiple stations operate simultaneously.

[0015] As a preferred embodiment of the present invention, the system also includes: a drainage channel located at the bottom of the sampling space for draining wastewater after cleaning to prevent wastewater accumulation and cross-contamination; a control input device located on the outer wall of the mounting frame, allowing operators to easily set and adjust various process parameters; and a stickies weighing unit located within the extraction container for real-time stickies weight measurement, providing accurate monitoring data. These features enhance the system's automation and ease of operation while ensuring the accuracy of monitoring data.

[0016] As a preferred embodiment of the present invention, the whitewater sampling system includes a whitewater input channel, a clean water input channel, an output channel, and a sample stabilization chamber. The sample stabilization chamber is equipped with a temperature control device and a pH adjustment system to adjust the whitewater sample to the optimal detection state without changing the properties of the stickies. The whitewater sampling system is also equipped with a self-cleaning device that automatically flushes the pipes and chamber after sampling to prevent cross-contamination caused by sample residue. This design ensures representative sampling and accurate measurement results, while also improving the long-term operational stability of the system.

[0017] According to another aspect of the present invention, a method for applying stickies extracted based on the above system is provided, comprising a continuous extraction step, a real-time analysis step, a dynamic feedback control step, and an adaptive production optimization step.

[0018] Specifically, the continuous extraction step utilizes the above-mentioned system to monitor and extract stickies in papermaking white water 24 hours a day, and the continuous collection, separation and extraction of samples are achieved through the cyclic rotation of the sampling pulp plate, and the extracted stickies are collected in real time in the extraction container; the real-time analysis step utilizes a stickies weighing device to perform real-time quantitative measurement of the continuously extracted stickies, record the dynamic change curve of the stickies content over time, and establish a time series stickies content database; the dynamic feedback control step compares the continuously monitored stickies content time series data with the dynamic preset threshold in real time to identify the changing trend and fluctuation pattern of the stickies content. When the stickies content exceeds the preset threshold or exhibits abnormal fluctuations, a precise adjustment signal is promptly sent to the papermaking production line control system; the adaptive production optimization step realizes dynamic adaptive adjustment of papermaking process parameters based on the stickies generation pattern revealed by the continuous monitoring data, including real-time optimization of the amount of additives added, continuous adjustment of screening parameters and the operating status of the white water circulation system, forming a closed-loop control system, continuously reducing the adverse effects of stickies on the papermaking system, and improving production stability and paper quality consistency.

[0019] As a preferred embodiment of the present invention, the real-time analysis step also includes: continuously monitoring the physical properties of the stickies, recording in real time the viscosity curve, dynamic changes in particle size distribution, and moisture content fluctuations; regularly analyzing the chemical composition of continuously extracted stickies samples to track the time series changes in the content of resin substances, residual additives, and microbial metabolites; establishing a dynamic correlation model between stickies properties and papermaking process parameters, analyzing the changing patterns of stickies properties at different time periods and under different operating conditions, and forming a time-series correlation database to provide data support for real-time control of the production process. This comprehensive analysis method enables the system to gain a deep understanding of the formation mechanism and changing patterns of stickies, providing a more scientific basis for production process optimization.

[0020] As a preferred embodiment of the present invention, the dynamic feedback control step includes: establishing an intelligent early warning mechanism based on continuous monitoring data, setting three dynamic thresholds for stickies content: normal, warning, and alarm, and automatically adjusting the thresholds based on historical data and current production conditions; when the continuous monitoring data shows that the stickies content has reached the warning threshold or an abnormal growth trend is detected, the system automatically issues an early warning signal and adjusts the process parameters in real time to prevent the accumulation of stickies; when the continuous monitoring data shows that the stickies content has reached the alarm threshold or a sudden increase occurs, the system immediately notifies the operator and initiates an emergency response process, including increasing the amount of detergent, temporarily reducing the white water reuse rate, or performing an emergency cleaning of the equipment, while continuously monitoring the treatment effect, forming a closed-loop emergency response mechanism. This hierarchical response mechanism can respond to abnormal changes in stickies content in a timely and effective manner, reduce production risks, ensure paper quality, and extend equipment life.

[0021] In summary, the system and its application method for continuously monitoring, separating, and extracting stickies from papermaking whitewater, provided by the present invention, achieve intelligent control and optimization of the production process by real-time monitoring and analysis of stickies in whitewater. This effectively addresses issues such as equipment blockage and paper defects caused by stickies accumulation in traditional papermaking, thereby improving production efficiency and paper quality. In particular, the system's ability to continuously monitor stickies in whitewater 24 hours a day provides comprehensive data support for papermaking production, demonstrating its significant practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the present invention after the mounting frame is removed;

[0024] Figure 3 This is a schematic diagram of the structure of the present invention in the sampling space;

[0025] Figure 4 Schematic diagram of the structure of the hot air separation system of the present invention;

[0026] Figure 5 Schematic diagram of the structure of the negative pressure extraction system of the present invention;

[0027] Figure 6 This is a structural schematic diagram of the negative pressure extraction system of the present invention separated with the extraction container box partially removed;

[0028] Figure 7 This is a flow chart of the application method of the continuous monitoring, separation and extraction system for stickies in papermaking white water;

[0029] Figure 8 The complete data collection process from white water sampling to establishing stickies property profile is demonstrated;

[0030] Figure 9 Logical flow chart for cost-benefit analysis of stickies monitoring.

[0031] Figure numerals: mounting frame 10, integrated isolation frame 11, white water sampling system 20, sample pretreatment system 30, hot air separation system 40, negative pressure extraction system 50, integrated isolation structure 60, white water input channel 21, clean water input channel 22, output channel 23, sample stabilization chamber 24, sampling component 31, hot air drying part 41, separation adsorption part 42, extraction shell 51, second adsorption pipe 52, second adsorption element 53, extraction container box 54, rubber isolation plate 62, sampling pulp plate 311, fan unit 411, heating wire 412, grid plate 413, first adsorption pipe 421, container chamber 511, sampling space 12, separation isolation station 621, extraction isolation station 622, long gap 623, drainage channel 70, control input device 80, adhesive weighing piece 90. DETAILED DESCRIPTION

[0032] Example 1:

[0033] The present embodiment provides an intelligent separation and extraction system with continuous monitoring of stickies in papermaking white water and an application for extracting stickies, mainly for real-time monitoring and efficient extraction of stickies that cannot be dissolved normally in the white water circulation system. The system is capable of uninterrupted sampling and analysis of flowing white water by setting a dedicated branch sampling port or extraction port on the white water delivery pipeline or the white water circulation box. The working principle of the system is based on the significant differences in water absorption and viscosity between wood fiber dissolves and stickies. Through hot air drying and differentiated adsorption technology, the two are accurately separated and continuously monitored. During operation, the system extracts samples directly from the outlet of the white water pipeline or the sedimentation tank, without the need for additional dissolution treatment of the recycled paper material. The intelligent control system judges the trend of changes in the stickies content based on real-time monitoring data. This intelligent monitoring system is seamlessly integrated into the white water circulation system of the papermaking production line. It can monitor the stickies content in real time and accurately, and apply the monitoring data to optimize production parameters. It intelligently guides the production process according to the amount of stickies in different stages, effectively reducing the adverse effects of stickies on the papermaking system, reducing equipment blockages and paper defects, and improving resource utilization efficiency.

[0034] refer to Figures 1 to 3As shown, the present invention's continuous monitoring system for adhesives in papermaking whitewater employs a modular, integrated design. The main component is a mounting frame 10, within which an integrated isolation frame 11 is located. Together, these components form a structurally optimized, enclosed sampling space 12, with a rectangular upper portion and a semicircular lower portion, facilitating whitewater circulation and efficient sampling. The mounting frame 10 is mounted via a connecting flange at a branch or sampling port of the whitewater delivery pipeline. Electric regulating valves and flow control devices are installed at these branches or sampling ports, ensuring the system can automatically adjust the sampling volume based on monitoring requirements while also ensuring a leak-free connection with the existing piping system. Within this enclosed space, four functionally coordinated subsystems are integrated: a whitewater sampling system 20, a sample pretreatment system 30, a hot air separation system 40, and a negative pressure extraction system 50. This modular design allows the system to adapt to diverse installation environments and process requirements, while also facilitating maintenance and upgrades. The system also features a data acquisition and analysis module that transmits monitoring results in real time to the papermaking production line's central control system, providing data support for production process optimization.

[0035] During operation, the system first introduces a sample from the whitewater pipeline into the semicircular lower space of the sampling chamber 12 via the whitewater sampling system 20. The whitewater sampling system 20 utilizes a programmable control strategy, automatically adjusting the sampling frequency and volume based on the production process stage, ensuring continuous and representative monitoring. Subsequently, the sample pretreatment system 30 within the sampling chamber 12 activates according to a preset program. By controlling its rotation, the sampling paddle sweeps across the whitewater sample, effectively extracting adhesives from the whitewater through the paddle's adsorption action. After sampling, the system continues to rotate the sample pretreatment system 30 at a fixed angle, sequentially passing through two stations: the separation and isolation station 621 of the hot air separation system 40 and the extraction and isolation station 622 of the negative pressure extraction system 50. These two key processing systems are located above the sampling chamber and are connected to the sampling chamber 12 via a special rubber isolation structure. This ensures the accuracy and stability of the processing process while effectively preventing interference between the different stations. Through this continuous sampling-analysis-extraction working mode, the system realizes real-time monitoring of the stickies content in white water. The monitoring data can be used to analyze the dynamic changes in the production of stickies and provide a scientific basis for the control of stickies in the production process.

[0036] refer to Figure 2 and Figure 3As shown, the whitewater sampling system 20 is responsible for extracting representative samples from the whitewater pipeline and performing preliminary processing. It comprises a whitewater input channel 21 (dedicated for introducing whitewater samples from the main pipeline), a clean water input channel 22 (equipped with a flow control valve to ensure stable and controllable sampling volume), an output channel 23 (to ensure the targeted output of processed samples), and a sample stabilization chamber 24 (which serves as a temporary sample storage and preliminary processing area). The sample stabilization chamber 24 is equipped with a temperature control device and a micro-pH adjustment system (not shown) to adjust the whitewater sample to the optimal detection state without altering the properties of the adhesives. The system is also equipped with a self-cleaning device that automatically flushes the pipeline and chamber after each sampling, preventing cross-contamination caused by sample residue and ensuring the accuracy of monitoring results. The whitewater sampling system 20 is connected to the main pipeline using a quick-connect design, facilitating system maintenance and replacement of key components without downtime, thereby enhancing the reliability and service life of the entire monitoring system. Furthermore, the system is equipped with an intelligent flow sensor that monitors the sampling flow in real time, ensuring stable sampling conditions despite fluctuations in the whitewater flow rate.

[0037] refer to Figure 3 As shown, the sample pretreatment system 30 utilizes a rotary sampling mechanism to efficiently capture and pretreat stickies in whitewater samples. The system comprises an intelligent, fan-shaped sampling assembly 31, the center of which is coaxially connected to a precision rotary stepper motor (not shown). The stepper motor is microcomputer-controlled, enabling angular positioning and speed adjustment to ensure sampling accuracy and repeatability. To prevent interference and wear on moving components from suspended particulate matter in the whitewater, the motor's output shaft is positioned above the whitewater sample surface. A dust- and water-resistant design enhances the system's stability and durability in humid environments. The system is connected to a central controller via a data interface, enabling automatic adjustment of sampling strategies and rotation parameters based on real-time changes in the whitewater's state.

[0038] The key component of the sampling assembly 31 is a plurality of sampling pulp plates 311 evenly distributed along the circumferential direction. Each sampling pulp plate is made of a new type of porous composite material. This composite material combines the mechanical strength of a stainless steel substrate with the selective adsorption capacity of a special polymer coating. It is designed specifically for capturing stickies in white water and has the characteristics of corrosion resistance, wear resistance, and easy cleaning. Furthermore, the surface of the sampling pulp plate 311 can also be designed with a micro-nanoscale structure to further improve the ability to capture trace stickies. In addition, the gap between the sampling pulp plate 311 and the inner wall of the sampling space 12 is controlled to a minimum range, and a pressure-free contact design is adopted, so that one side of the sampling pulp plate 311 maintains a slight contact state with the curved inner wall of the sampling space 12. This design enables the sampling pulp plate 311 to gently scrape the inner wall surface during rotation, maximizing the capture and adsorption of stickies in the pulp solution, thereby improving the comprehensiveness and accuracy of sampling.

[0039] refer to Figure 3 As shown, the hot air separation system 40 and the negative pressure extraction system 50 are arranged sequentially along the rotation path of the sampling slurry plate 311, following the process sequence. The system utilizes an intermittent fixed-angle rotation control mechanism, ensuring that after each rotation of the sampling slurry plate 311, the working areas of the hot air separation system 40 and the negative pressure extraction system 50 each correspond to a single sampling slurry plate 311. This precise positioning control ensures that each workstation can focus on processing a single whitewater sample, avoiding cross-interference and improving separation and extraction accuracy. This design also ensures process continuity, allowing different sampling slurry plates 311 to be simultaneously in different processing stages, significantly improving the overall efficiency of the equipment. The system is also equipped with high-precision angle sensors and position detection devices to ensure precise position control during long-term operation. This ensures stable workstation alignment even in the event of whitewater flow fluctuations or slight equipment vibrations, ensuring consistent and reliable monitoring data. This continuous monitoring mode enables the system to reflect real-time trends in the adhesive content of the whitewater, providing a timely basis for parameter adjustments during the production process.

[0040] refer to Figure 3 and Figure 4 As shown, the hot air separation system 40 utilizes the differences in physical properties between dissolved wood fiber and stickies in white water, particularly their significant differences in water absorption and viscosity, to achieve efficient separation. In the application scenario of continuous monitoring of white water stickies, the separation accuracy of the system directly affects the accuracy of the monitoring results.

[0041] Furthermore, the hot air separation system 40 also provides an intelligent hot air control solution, comprising a multi-point temperature sensor array, a microprocessor control unit, and a precise control actuator. Specifically, five to seven evenly distributed PT100 high-precision temperature sensors are installed within the hot air separation system 40 to collect real-time temperature data from multiple points within the separation space. Simultaneously, a dual-mode sensor is installed at the white water sampling inlet to collect white water temperature and turbidity information. This data is transmitted via a data bus to the microprocessor control unit, which is equipped with a dedicated PID algorithm chip for data analysis and decision-making. At the execution level, the system utilizes a stepper motor-controlled air volume adjustment damper and PWM-modulated heating power control to achieve temperature control with 0.1°C accuracy and air speed regulation with 1% accuracy. For example, if the white water turbidity is detected to be increasing, the system automatically increases the hot air temperature by 0.5-1.5°C and reduces the air speed by 5-10% to ensure that thick adhesive layers are fully dried. Furthermore, as the white water temperature rises, the system reduces the initial hot air temperature to prevent the total heat from exceeding the heat tolerance threshold of the adhesives.

[0042] Furthermore, to prevent unexpected overheating, the system incorporates dual safety mechanisms: First-level protection utilizes a physical fuse that automatically cuts off power when the temperature exceeds 85°C; second-level protection utilizes software monitoring. If the temperature rise rate exceeds 3°C / second or the temperature difference between any two points exceeds 10°C, the system immediately reduces heating power and issues an alarm. This multi-layered, precise control and safety mechanism ensures that the physical and chemical properties of the adhesives are not compromised during the separation process, guaranteeing the accuracy and comparability of monitoring data.

[0043] refer to Figure 3 and Figure 4 As shown, the hot air separation system 40 includes two functionally coordinated units: a hot air drying section 41 and a separation and adsorption section 42. In the application scenario of continuous monitoring of white water adhesives, the design and performance of these two units are crucial to the accuracy of the monitoring results. The hot air drying section 41 is responsible for precisely heat-treating the white water sample film on the sampling pulp plate 311, and utilizing the differences in water absorption and viscosity between the wood fiber solutes and adhesives to achieve material separation. That is, the wood fiber quickly loses water and becomes lighter due to its good water absorption, while the adhesives retain their original properties due to their poor water absorption. Subsequently, the separation and adsorption section 42 absorbs the dried wood fiber through a precisely controlled negative pressure, leaving an enriched adhesive layer for subsequent analysis.

[0044] Considering the diverse types of stickies in papermaking white water (including residual additives, resins, and microbial metabolites), the present invention further employs a segmented temperature gradient control design for the hot air drying section 41, for example: maintaining the inlet at 45±2°C, the middle at 55±2°C, and the outlet at 65±2°C. Each temperature zone is equipped with an independent control system, ensuring that stickies of varying characteristics are properly treated without altering their chemical structure.

[0045] The hot air drying section 41's structural design comprises three core components: a fan unit 411 (which provides airflow power), a heating wire 412 (which heats the airflow), and a mesh plate 413 (which optimizes hot air distribution). During operation, the heating wire 412 heats the airflow generated by the fan unit 411 to an optimal temperature. The hot air is then evenly distributed through the mesh plate 413 onto the whitewater sample film on the sampling slurry plate 311, drying it with precise temperature control. In the continuous whitewater monitoring system, the fan unit 411 utilizes an EC brushless DC motor, coupled with an impeller design, to ensure airflow stability. The mesh plate 413 features a honeycomb structure with internal guide grooves to ensure even coverage of the entire surface of the sampling slurry plate 311, eliminating hot spots and ensuring a more uniform and controllable drying process.

[0046] The separation and adsorption section 42 consists of a first adsorption element and a first adsorption duct 421 (the first adsorption element is not shown). The first adsorption duct 421, located above the hot air drying section 41, precisely absorbs the air-dried wood fibers, completing the separation process. Furthermore, the first adsorption element features an adjustable air gap design, automatically adjusting its distance from the sampling pulp plate 311 according to varying operating conditions. This ensures adsorption efficiency while avoiding disturbance of the adhesive layer. The inner wall of the first adsorption duct 421 is treated with a low-friction material to reduce resistance and deposition of wood fibers during transport, thereby enhancing the long-term stability of the system.

[0047] refer to Figure 3 、 Figure 5 and Figure 6 As shown, the negative pressure extraction system 50 is a key component for the final collection of stickies. It performs the crucial function of quantitative sticky extraction and analysis in the whitewater continuous monitoring system. This system is specifically designed for extracting stickies still adhered to the sampling pulp plate 311 and comprises an extraction housing 51 (with a chamber 511 formed therein), a second adsorption conduit 52, and a second adsorption element 53. Within the chamber 511 lies a removable extraction container 54. Its bottom end is fully connected to the chamber 511 and, via piping, to the second adsorption conduit 52 and second adsorption element 53, forming a complete negative pressure extraction circuit.

[0048] This system utilizes precise calculation and control of adsorption forces, which is crucial for accurate monitoring of whitewater adhesives. The adsorption forces of both the first and second adsorption elements 53 are greater than the adsorption forces of the sampling plate 311 on the whitewater sample membrane, ensuring effective adsorption and separation of the substances. Furthermore, the adsorption force of the second adsorption element 53 is greater than that of the first adsorption element, creating an adsorption force gradient. For example, the adsorption force of the sampling plate 311 on the sample is controlled within the range of 0.5-1.0 kPa, the adsorption force of the first adsorption element is set at 1.2-1.8 kPa, and the adsorption force of the second adsorption element 53 reaches 2.0-3.0 kPa. This precise gradient design ensures the gradual separation of different components during the process.

[0049] In the actual process, the sampling pulp plate 311 carrying the whitewater sample first passes through the hot air separation system 40. Here, the wood fibers, reduced in weight by drying, are separated by suction under the action of the first adsorption element. The sampling pulp plate 311 then moves to the negative pressure extraction system 50, where the remaining stickies are completely sucked and collected by the stronger adsorption force of the second adsorption element 53. This sequential process ensures the complete separation of stickies from wood fibers.

[0050] Furthermore, in the white water continuous monitoring system, the first adsorption element and the second adsorption element 53 are both equipped with independent negative pressure sensors and microprocessor control units, which can adjust the adsorption force in real time to adapt to the changing characteristics of adhesives under different white water conditions.

[0051] The extraction container 54 is designed to be completely withdrawn from the mounting frame 10 , allowing an operator to conveniently remove the collected adhesives for subsequent analysis or processing.

[0052] refer to Figure 2 and Figure 3 As shown, the present invention incorporates an integrated isolation structure 60 within the sampling space 12, addressing the potential interference that can arise when multiple stations operate simultaneously during continuous whitewater monitoring. This structure serves a dual purpose: first, it effectively isolates the working area between the hot air separation system 40 and the negative pressure extraction system 50, preventing the adsorption forces of the two systems from interfering with each other; second, it blocks the impact of the hot air generated by the hot air separation system 40 and the negative pressure generated by the negative pressure extraction system 50 on other sampling slurry plates 311 along the rotational path, ensuring sample integrity at various stages of processing.

[0053] In this embodiment, the integrated isolation structure 60 is constructed using high-temperature and chemically resistant special silicone rubber isolation panels 62. These panels form a separation isolation station 621 and an extraction isolation station 622 at the locations of the hot air separation system 40 and the negative pressure extraction system 50, respectively. The advantage of this design is that the special silicone rubber material not only has excellent sealing properties and appropriate elasticity, automatically giving way and subsequently resetting the seal when the sampling slurry plate 311 passes through, but also maintains long-term stable performance in whitewater environments, resisting aging and deformation due to prolonged exposure to chemicals. In addition, in response to the white water monitoring needs of different working conditions, the integrated isolation structure 60 can also adopt a variety of different forms, such as: it can be designed as a hard partition with an openable and closable door, which automatically opens before the sampling pulp plate 311 rotates to the work station and automatically closes after it rotates out, which is suitable for high pressure difference environments; or an air curtain type isolation is adopted, which uses compressed air to form an airflow partition wall without a physical barrier, which is particularly suitable for high-frequency sampling scenarios; it can also be designed as a retractable movable partition, which automatically retracts and adjusts the size of the isolation area according to the position of the sampling pulp plate 311 to improve energy efficiency; it can also use a rotating partition, which rotates synchronously with the sampling component 31 to always maintain isolation of a specific work station, which is suitable for high-speed continuous monitoring scenarios.

[0054] The connection method of the integrated isolation structure 60 in the white water monitoring system is further described in detail: the grid plate 413 of the hot air separation system 40 is directly installed on the integrated isolation frame 11 and remains connected to the separation isolation station 621 to ensure that the hot air can enter the interior of the station in a directed manner; the first adsorption pipe 421 passes through the upper rubber isolation plate 62 to form an airtight connection with the separation isolation station 621, thereby achieving precise adsorption of dried wood fibers; similarly, the second adsorption pipe 52 also passes through the integrated isolation frame 11 and is connected to the extraction isolation station 622 to form an adhesive extraction channel.

[0055] To resolve the conflict between the isolation structure and sample rotation, a long slit 623 corresponding to the size of the sampling paddle plate 311 is further provided in the corresponding rubber isolation plate 62 along the rotation path that the sampling paddle plate 311 must pass through. This design allows the sampling paddle plate 311 to easily push the rubber isolation plate 62 in the slit with its kinetic energy during rotation, smoothly passing through the isolation structure and completing the entire transfer process between workstations. After the sampling paddle plate 311 passes through, the isolation plate automatically resets to restore the isolation effect.

[0056] refer to Figure 3 As shown, the present invention also incorporates a self-cleaning function into its design, which is crucial for ensuring long-term operational stability and measurement accuracy. This function is achieved through the versatile design of the whitewater sampling system 20, eliminating the need for additional cleaning equipment and improving structural integration and cost-effectiveness.

[0057] The specific implementation is as follows: After a cycle of stickies extraction is completed, clean water is introduced through the clean water input channel 22 to create an efficient flushing effect, comprehensively cleaning the residue on the sampling assembly 31 and the pulp residue attached to the inner wall of the sampling space 12. To achieve a closed-loop cleaning process, a dedicated drainage channel 70 is designed at the bottom of the sampling space 12 to ensure that the wastewater after cleaning can be smoothly discharged from the system, preventing wastewater accumulation and cross contamination.

[0058] In order to realize intelligent operation and precise control of the device, the present invention configures a control input device 80 (such as a human-machine interface) on the outer wall of the mounting frame 10. Figure 1 As shown in the figure, the operator can easily set and adjust various process parameters, such as the preset pulp dilution concentration, sampling component rotation speed and interval time, hot air temperature and wind speed, the negative pressure intensity of each adsorption element and other key parameters.

[0059] The control input unit 80, equipped with a high-performance processing chip and intelligent control algorithms, automatically calculates optimal process conditions based on input parameters and monitors the operating status of each system in real time. When an abnormality is detected, the system automatically issues an alarm and provides treatment recommendations, ensuring safe and stable operation. The control system also features data recording and analysis capabilities, generating trend charts for stickies content, providing data support and decision-making for papermaking production.

[0060] The specific working process is as follows:

[0061] 1. Intelligent continuous monitoring process for white water adhesives

[0062] Sampling and preparation stage

[0063] The system introduces whitewater samples into the whitewater sampling system 20 through a sampling port installed on the whitewater pipeline. Based on monitoring parameters preset by the control input unit 80, the whitewater sampling system 20 controls the electric valve to precisely adjust the sampling flow rate, ensuring representative sampling. The sampled whitewater enters the system through the whitewater input channel 21. It undergoes necessary dilution and adjustment through the clean water input channel 22, and briefly remains in the sample stabilization chamber 24 to stabilize the temperature and flow rate. The processed whitewater sample then flows through the output channel 23 into the lower semicircular area of ​​the sampling space 12, forming a stable liquid surface and facilitating high-precision monitoring.

[0064] Sampling stage

[0065] The system activates the sample pretreatment system 30, controlling the motor to intermittently rotate at a fixed angle according to a pre-set program. During this process, a sampling slurry plate 311, made of a special composite material, slowly passes through the whitewater surface. Its selective adsorption properties form a sample film rich in stickies on its surface. Rotation continues until the sampling slurry plate 311, carrying the sample film, reaches the separation and isolation station 621, completing the sampling process. The system automatically adjusts the sampling frequency based on the changing trend of the stickies content, increasing the sampling frequency when the stickies content fluctuates significantly, enabling dynamic monitoring.

[0066] Separation stage

[0067] After the sampling pulp plate 311 arrives at the separation and isolation station 621, the hot air separation system 40 automatically starts. The fan unit 411 generates a precisely controlled airflow, which is heated by the electric heating wire 412 and evenly blown toward the white water sample film on the sampling pulp plate 311 through the grid plate 413. Due to the difference in water absorption between the dissolved wood fiber and the adhesive, the dissolved wood fiber dries and becomes lighter first. At this time, the first adsorption element is activated and the dried wood fiber is adsorbed and collected through the first adsorption pipe 421, while the adhesive continues to adhere to the sampling pulp plate 311 due to its moisture and viscosity, thus achieving a preliminary separation of the two substances. The system automatically adjusts the hot air temperature and wind speed by monitoring the separation effect in real time to ensure that the best separation effect can be achieved under different white water characteristics.

[0068] Extraction and monitoring phase

[0069] After the separation is completed, the rotating motor rotates precisely again, so that the sampling pulp plate 311 carrying the adhesives is moved to the extraction isolation station 622, and the other sampling pulp plates 311 are transferred to the corresponding stations respectively, so as to realize the continuous monitoring process. At this time, the negative pressure extraction system 50 is started, and the second adsorption element 53 completely absorbs the adhesives from the sampling pulp plate 311 through the second adsorption pipe 52 by precisely controlled negative pressure. The adhesives pass through the second adsorption pipe 52 and the wall of the extraction shell 51 in turn and enter the holding chamber 511 inside the extraction holding box 54. At the same time, a high-precision adhesive weighing piece 90 is provided at the bottom of the holding chamber 511 to measure the weight of the adhesives in real time and transmit the data to the control system to complete a quantitative monitoring of the adhesives. The system automatically generates a trend chart of the change in adhesive content based on the continuous measurement data, reflecting the dynamic changes of white water adhesives in real time during the papermaking production process.

[0070] Data application stage

[0071] The system transmits monitored stickies data to the paper production line's central control system via an industrial communication interface, guiding production process optimization. If stickies levels exceed a preset threshold, the system issues an early warning signal, prompting the operator to make appropriate adjustments, such as changing additive dosage, adjusting screening parameters, or optimizing the white water circulation system. The system also automatically recommends optimal treatment options based on different stickies content ranges, such as maintaining existing parameters for low levels, adjusting additive dosage appropriately for medium levels, and implementing enhanced cleaning measures for high levels, enabling intelligent management of the production process.

[0072] Cycle monitoring phase

[0073] After processing a sample pulp plate 311, the system continues to control the motor to rotate intermittently at a fixed angle according to the program, so that different sample pulp plates 311 pass through each station in sequence, achieving parallel processing of multiple samples and continuous cycle monitoring of stickies. This parallel processing mechanism significantly improves monitoring efficiency and data continuity, enabling 24-hour uninterrupted stickies content monitoring and providing comprehensive data support for paper production.

[0074] 2. Intelligent self-cleaning function

[0075] After the monitoring system has been running for a certain period of time, it automatically switches to cleaning mode to ensure long-term monitoring accuracy. Clean water flows through the clean water input channel 22, controlling the rotary motor to drive the sampling slurry plate 311 through the cleaning area. The system employs a triple cleaning strategy: first, high-pressure water flushing, where clean water is sprayed from a specific angle, generating a powerful impact force to effectively remove stubborn adhesive residues from the surface of the sampling slurry plate 311. Second, chemical-assisted cleaning, where the system automatically mixes the most appropriate cleaning solution based on the monitored adhesive properties to dissolve insoluble adhesives. Finally, ultrasonic cleaning provides a deep clean for difficult-to-remove trace residues.

[0076] As the cleaning process progresses, the liquid below the sampling space 12 automatically renews based on the level of contamination detected by the sensor, ensuring effective cleaning. Simultaneously, the motor drives the sampling paddle 311 to rotate at a specific rhythm, enabling it to self-clean and clean the inner walls of the sampling space 12 during rotation. The system also monitors cleaning effectiveness using a photoelectric sensor, automatically extending the cleaning time or increasing the cleaning dosage if necessary, ensuring long-term, stable operation of the monitoring device.

[0077] After the cleaning work is completed, the system discharges the clean wastewater containing impurities out of the device through the drainage channel 70 set at the bottom of the sampling space 12, and automatically performs short-term airflow drying to quickly restore the equipment to the optimal monitoring state and continue the continuous monitoring of white water adhesives.

[0078] Example 2: Intelligent application of a continuous monitoring, separation and extraction system for stickies in papermaking white water

[0079] This embodiment provides a continuous application method based on a continuous monitoring, separation and extraction system for papermaking white water stickies. This method realizes intelligent control and optimization adjustment of the production process by real-time monitoring and analysis of the stickies content in the white water, effectively solving problems such as equipment blockage and paper surface defects caused by stickies accumulation in traditional papermaking production, and improving production efficiency and paper quality.

[0080] refer to Figure 7-Figure 9As shown, the application method of the present invention includes four main steps: continuous extraction, real-time analysis, dynamic feedback control, and adaptive production optimization. This method utilizes the papermaking whitewater stickies continuous monitoring, separation, and extraction system described in Example 1 to obtain continuous monitoring data on stickies in whitewater and apply this data to production process optimization. The specific implementation methods of each step are described in detail below.

[0081] In this embodiment, the continuous extraction step utilizes the papermaking whitewater adhesives continuous monitoring, separation, and extraction system described in Example 1. Through the cyclic rotation of the sampling pulp plate 311, 24-hour uninterrupted monitoring and extraction of adhesives in the whitewater are achieved. This system is installed on the main whitewater circulation pipeline, with the sampling point located at the pulper outlet. The whitewater adhesives content at this location is highly representative and can reflect the adhesives status of the entire whitewater circulation system.

[0082] The system achieves continuous sample collection, separation, and extraction by controlling the rotation frequency of the sampling pulp plate 311. For example, for a production line using recycled waste paper as raw material, the sampling pulp plate 311's rotation frequency is set to complete a full cycle every 5 minutes, ensuring the temporal resolution and continuity of the monitoring data. For production lines using virgin fiber as raw material, the rotation frequency can be reduced to once every 10 minutes to save energy and extend the life of the equipment.

[0083] The extracted stickies are collected in real time in the extraction container 54 via the negative pressure extraction system 50. To ensure data accuracy and consistency, the system uses a dual-extraction container alternating operation mode. When one extraction container reaches the preset collection time (typically four hours), the system automatically switches to the other container to continue collection. The full container is weighed and analyzed, and then emptied to prepare for the next collection cycle. This design ensures the continuity of the stickies extraction process, preventing monitoring interruptions caused by container changes.

[0084] Collected stickies are quantitatively measured in real time using a high-precision stickies weighing device 90 (with an accuracy of 0.01g) located at the bottom of the extraction container 54. The system utilizes time-stamping technology, accurately correlating each weighing result with the sampling time, generating time-series data on stickies content. After preliminary processing, this data is transmitted in real time to a central data processing unit, which records the dynamic changes in stickies content over time and stores it in a dedicated time-series stickies content database.

[0085] In addition, the system automatically collects a sample of stickies every eight hours and sends it to the accompanying chemical analysis laboratory for compositional analysis. This analysis includes the content of resinous substances (using gas chromatography), residual additives (using liquid chromatography-mass spectrometry), and microbial metabolites (using biosensor array technology). This chemical composition data, combined with continuously monitored physical property data, forms a comprehensive stickies characterization dataset.

[0086] Based on the massive amount of collected time-series data, a dynamic correlation model between stickie properties and papermaking process parameters was constructed. This model, utilizing a machine learning algorithm (primarily based on a long short-term memory (LSTM) network), analyzes how stickie properties vary over time (e.g., shift changes, seasonal variations) and under different operating conditions (e.g., raw material changes, product specification changes). For example, analysis revealed that for every 10% increase in the proportion of recycled paper in the raw material, the resin content in the stickies increased by an average of 7.5%, reaching its peak two hours after production. Furthermore, for every 5°C increase in ambient temperature, the average viscosity of the stickies decreased by approximately 12%, making separation more difficult. This correlation data forms a time-series database.

[0087] The core of this implementation lies in converting continuously monitored sticky matter content time series data into production control instructions. Based on at least three months of historical monitoring data, the system establishes an intelligent early warning mechanism with three dynamic thresholds: a normal threshold (less than 0.5 g / m³ of white water per hour), a warning threshold (0.5-1.2 g / m³), and an alarm threshold (above 1.2 g / m³). These thresholds are not fixed but automatically adjust based on historical data and current production conditions. For example, during high summer temperatures (ambient temperatures above 30°C), the system automatically lowers each threshold by 15% to account for the increased activity of stickies under these conditions. For specialty paper production, the system determines more precise thresholds based on historical data for specific products.

[0088] The system compares current stickies levels with dynamic thresholds in real time to identify trends and fluctuations in stickies levels. Specifically, the system analyzes not only absolute values ​​but also the rate of change. For example, if three consecutive monitoring data show an increase in stickies levels exceeding 20% ​​per hour, the system will identify this as an abnormal trend and trigger an alert, even if the absolute value has not yet reached the warning threshold.

[0089] When stickies levels reach a warning threshold or detect an abnormal growth trend, the system automatically issues an alert and adjusts process parameters in real time. These adjustments include increasing dispersant dosage by 5-10%, increasing the frequency of the screening system, and adjusting the whitewater pH to a slightly alkaline pH of 7.2-7.5. These preventative adjustments effectively prevent further stickies from accumulating and avoid production problems.

[0090] For example, during a production run, the system detected a sticky content of 0.62 g / m³ at 10:23 AM. This increase, coupled with three consecutive measurements showing an upward trend, immediately triggered an alert. The system automatically increased the dispersant dosage from 2.5 kg / ton of slurry to 2.8 kg / ton and adjusted the whitewater pH from 6.8 to 7.3. These timely adjustments caused the sticky content to begin decreasing after 30 minutes and returned to normal levels (0.47 g / m³) after one hour, successfully avoiding the risk of equipment blockage.

[0091] When stickies levels reach the alarm threshold or experience a sudden increase (e.g., a rise exceeding 50% within 15 minutes), the system immediately notifies operators via the factory's internal communication network and automatically initiates emergency response procedures. These include significantly increasing detergent usage (typically 1.5-2 times the normal amount), temporarily reducing whitewater reuse (from 85% to 60-70%), and performing emergency cleaning of critical equipment. The system also continuously monitors treatment effectiveness. If stickies levels fail to show a downward trend within 15 minutes, the emergency response level is escalated, and if necessary, a temporary shutdown may be considered. This tiered response mechanism forms a complete, closed-loop emergency response system.

[0092] Based on long-term, continuous monitoring data, the system reveals the inherent patterns of sticky formation and enables dynamic, adaptive adjustment of production process parameters. Unlike traditional fixed parameter control, this system uses fuzzy control algorithms based on real-time monitoring data to achieve continuous optimization and adjustment of key parameters in the papermaking process.

[0093] Regarding additive dosage, the system has established a dynamic matching model based on the type and content of stickies. For example, if resinous substances account for more than 60% of the stickies, the system will prioritize increasing the dosage of fatty acid dispersants; while if microbial metabolites account for a high proportion, the system will increase the dosage of fungicides accordingly.

[0094] In terms of screening parameters, the system dynamically adjusts the screening equipment's vibration frequency, screen slot size, and screening pressure based on real-time sticky particle size distribution data. For example, if the system detects an increase in the proportion of fine stickies (<100 microns), it will automatically reduce the screening pressure by 5-10%, increase the retention time, and improve the removal efficiency of fine particles.

[0095] Regarding the operating parameters of the whitewater circulation system, the system optimizes the circulation flow rate, settling time, and temperature control strategies in real time based on the trend of stickies content. For example, if the system detects a continuous increase in stickies content, it will appropriately extend the settling time and reduce the circulation ratio to reduce the system's burden.

[0096] For chemical composition analysis, the system utilizes a combination of advanced analytical techniques. Gas chromatography is used to analyze the content of resinous substances, focusing on identifying components such as rosin, fatty acids, and resin acids. Liquid chromatography-mass spectrometry is used to analyze the content of additive residues, capable of detecting trace amounts of residual fixatives, reinforcing agents, and surface sizing agents. Biosensor array technology is used to analyze the content of microbial metabolites, specifically detecting extracellular polymers and metabolic waste products produced by various microorganisms.

[0097] This chemical composition data, linked to production parameters, forms a database, and analysis has revealed numerous valuable patterns. For example, when the raw materials contain a large amount of coated paper, the silicate and calcium carbonate content in the adhesive increases significantly, necessitating a corresponding increase in the amount of chelating dispersant. Furthermore, the addition of certain wet-strength agents during production increases the content of polyamides in the adhesive, as these adhesives are more easily dispersed in alkaline environments. These findings directly guide the development of production optimization strategies. Based on sticky monitoring, the system establishes a comprehensive cost-benefit analysis model, calculating the input-output ratio and economic benefits of the monitoring system in real time. The cost analysis includes direct costs such as equipment investment, operation and maintenance, and personnel training, as well as indirect costs such as equipment cleaning, scrap loss, downtime, and chemical consumption caused by sticky issues. The system also establishes a dynamic ROI monitoring mechanism to regularly update the benefit evaluation results.

[0098] In summary, this embodiment achieves dynamic optimization of the production process through continuous monitoring, real-time analysis, and intelligent control of stickies in papermaking white water. The key innovation of this method lies in converting continuously acquired stickies monitoring data into real-time control instructions for the production process, forming a complete closed-loop control system.

Claims

1. A system for continuous monitoring, separation and extraction of stickies in papermaking white water, characterized in that: include: An installation frame (10) is provided with an integrated isolation frame (11) inside the installation frame (10), which together form a closed sampling space (12); the installation frame (10) is directly installed at the branch sampling port of the white water delivery pipeline through a connecting flange to achieve online continuous sampling; A white water sampling system (20) includes a white water input channel (21) and a sample stabilization chamber (24) provided with a flow control device, for continuously extracting white water samples from the white water delivery pipeline and delivering them to the closed sampling space (12), wherein the flow control device automatically adjusts the sampling volume according to monitoring requirements; The sample pretreatment system (30) comprises a continuously rotatable sampling assembly (31), wherein the sampling assembly (31) is provided with a plurality of sampling slurry plates (311) distributed along a circumferential direction, wherein the sampling slurry plates (311) are made of a porous composite material, including a stainless steel substrate and a special polymer coating, and have the ability to selectively adsorb adhesives in white water, and achieve continuous cyclic sampling of white water samples by intermittent fixed-angle rotation; A hot air separation system (40) and a negative pressure extraction system (50) are sequentially arranged on a rotation path of a sampling pulp plate (311) in a process sequence. The hot air separation system (40) comprises a hot air drying section (41) and a separation adsorption section (42). The separation adsorption section (42) comprises a first adsorption element for absorbing dried wood fibers through negative pressure. The negative pressure extraction system (50) comprises an adsorption assembly having a second adsorption element (53) for extracting adhesives still adhering to the sampling pulp plate (311). The adsorption forces of the first adsorption element and the second adsorption element (53) are both greater than the adsorption force of the sampling pulp plate (311) on the white water sample film, and the adsorption force of the second adsorption element (53) is greater than the adsorption force of the first adsorption element, thereby forming an adsorption force gradient to achieve gradual separation of different components. A data acquisition and transmission module, comprising a stickies weighing unit (90) and a control input unit (80), for monitoring the weight of the extracted stickies in real time and transmitting the monitoring data to a central control system of the papermaking production line; The system operates 24 hours a day to achieve real-time and continuous monitoring of the stickies content in papermaking white water, and uses the monitoring results for dynamic adjustment and optimization control of the production process.

2. The system for continuous monitoring, separation and extraction of stickies in papermaking white water according to claim 1, characterized in that: The hot air drying section (41) adopts a segmented temperature gradient control design, with the inlet section temperature being 45±2°C, the middle section temperature being 55±2°C, and the outlet section temperature being 65±2°C, and each temperature zone being equipped with an independent control system.

3. The system for continuous monitoring, separation and extraction of stickies in papermaking white water according to claim 1, characterized in that: The integrated isolation structure (60) includes a rubber isolation plate (62), and the rubber isolation plate (62) is provided with a long slit (623) adapted to the size of the sampling pulp plate (311) on the rotation path of the sampling pulp plate (311).

4. The system for continuous monitoring, separation and extraction of stickies in papermaking white water according to claim 1, characterized in that: Also includes: A drainage channel (70) is provided at the bottom of the sampling space (12); the control input device (80) is provided on the outer wall of the mounting frame (10); and the adhesive weighing piece (90) is provided in the extraction container box (54).

5. The system for continuous monitoring, separation and extraction of stickies in papermaking white water according to claim 1, characterized in that: The white water sampling system (20) further comprises a clean water input channel (22) and an output channel (23); a temperature control device and a pH adjustment system are arranged in the sample stabilization chamber (24), which can adjust the white water sample to an optimal detection state without changing the properties of the adhesives; the white water sampling system (20) is also equipped with a self-cleaning device, which automatically flushes the pipe and the chamber after sampling is completed.

6. A method for applying stickies extracted by the system according to claim 1, characterized in that: The following steps are involved: Continuous extraction step: using the system to monitor and extract stickies in papermaking white water 24 hours a day, realizing continuous collection, separation and extraction of samples through the cyclic rotation of the sampling pulp plate (311), and collecting the extracted stickies in real time; Real-time analysis step: using a stickies weighing device (90) to quantitatively measure the continuously extracted stickies in real time, recording a dynamic change curve of the stickies content over time, and establishing a time series stickies content database; Dynamic feedback control steps: Continuously monitored stickies content time series data is compared with dynamically preset thresholds in real time to identify trends and fluctuations in stickies content. When stickies content exceeds the preset threshold or exhibits abnormal fluctuations, precise adjustment signals are promptly sent to the paper production line control system. Adaptive production optimization steps: Based on the sticky material generation patterns revealed by continuous monitoring data, dynamic adaptive adjustment of papermaking process parameters is achieved. This includes real-time optimization of additive addition and continuous adjustment of screening parameters and the operating status of the white water circulation system. This forms a closed-loop control system, continuously reduces the adverse effects of stickies on the papermaking system, and improves production stability and paper quality consistency.

7. The method for applying the adhesive according to claim 6, wherein: The real-time analysis step also includes: continuously monitoring the physical properties of the stickies, recording the viscosity change curve, dynamic changes in particle size distribution, and moisture content fluctuations in real time; regularly performing chemical composition analysis on continuously extracted stickies samples, tracking the time series changes in the content of resin substances, the content of additive residues, and the content of microbial metabolites; establishing a dynamic correlation model between stickies properties and papermaking process parameters, analyzing the changing patterns of stickies properties under different time periods and different working conditions, and forming a time-series correlation database to provide data support for real-time control of the production process.

8. The method for applying the adhesive according to claim 6, wherein: The dynamic feedback control step includes: establishing an intelligent early warning mechanism based on continuous monitoring data, setting three dynamic thresholds for normal, warning and alarm sticky content, and automatically adjusting the thresholds based on historical data and current production conditions; when the continuous monitoring data shows that the sticky content reaches the warning threshold or detects an abnormal growth trend, the system automatically issues a warning signal and adjusts the process parameters in real time to prevent the accumulation of stickies; when the continuous monitoring data shows that the sticky content reaches the alarm threshold or shows a sudden increase, the system immediately notifies the operator and initiates an emergency treatment process, including increasing the amount of detergent, temporarily reducing the white water reuse rate or performing emergency cleaning of the equipment, while continuously monitoring the treatment effect to form a closed-loop emergency response mechanism.

Images