1729 results about "Hearth" patented technology

The invention relates to the technical field of control and regulation systems, in particular to a hearth auxiliary regulation control system which comprises a data processing module, an analysis module, a control module, a regulation and control module, an optimization module and a safety early warning module. The data processing module collects temperature data of a hearth combustor area, a water cooling wall and a tail flue in real time through a distributed temperature sensor network, and a dynamic combustion field three-dimensional model is generated through Kalman filtering denoising, redundancy cross validation and a temperature compensation algorithm in combination with combustor flame position signals and an air door opening state. And the optimization module updates the strategy weight based on the combustion efficiency improvement rate, and reinforces learning to extend the adaptive boundary of the strategy library. And the safety early warning module calculates the matching coefficient of the pipe wall temperature and the allowable stress in real time, triggers a grading intervention strategy to reduce the overtemperature risk, forms full-process closed-loop control, and improves the thermal efficiency and the operation safety of the boiler.

The invention relates to the technical field of mechanical stress and thermal deformation monitoring, in particular to a combustion fine adjustment method based on full-hearth expansion monitoring, which is characterized in that expansion sensor arrays are arranged on each layer of a main burner area of a boiler hearth, and vibration monitoring units are arranged in a layered manner from a main burner to an SOFA air area synchronously; normal deformation, three-dimensional expansion displacement data and vibration spectrum data of the four furnace walls are collected; generating a standardized monitoring data set through wavelet noise reduction and temperature compensation processing, fusing boiler operation parameters, and inputting the boiler operation parameters into the reinforcement learning model to generate a combustor adjustment instruction; water-cooled wall expansion rate change data is collected in real time to optimize model weight and update a control strategy, and a closed-loop feedback mechanism is formed. According to the method, through multi-source sensing data fusion and dynamic modeling, sub-meter analysis of thermal load distribution and quick response of the combustion state are achieved, the boiler operation efficiency is improved, and the service life of equipment is prolonged.

The invention provides a boiler combustion state visualization method, which comprises the steps of embedding a plurality of thermocouple temperature sensors in gaps of refractory bricks on the inner wall of a boiler hearth, acquiring temperature data of the hearth at different depths in real time, and transmitting the temperature data to a data acquisition terminal through a wireless communication module; fitting the normalized temperature data matrix by adopting a three-dimensional thin-plate spline interpolation algorithm to generate a hearth three-dimensional real-time temperature distribution model, performing mesh generation on the three-dimensional temperature distribution model by combining hearth geometric structure parameters obtained from computer aided design software, and constructing a hearth temperature finite element model; the hearth temperature finite element model is imported into ANSYS finite element analysis software, hearth wall surface material attributes and combustion heat load boundary condition parameters are set, transient thermal analysis of a hearth temperature field is carried out, and a temperature estimation value of any position of the hearth changing along with time is obtained.

The invention relates to the technical field of annealing furnaces, in particular to a swirl injection type energy-saving annealing furnace. The device comprises outer shell plates and an air duct, the outer shell plates are spliced to form a hearth, the air duct is arranged in the outer shell plates to form an air path for convective circulation, the air duct is connected with a circulating fan, and air in the air duct and an inner cavity of the hearth is driven by the circulating fan to actively convectively circulate. The air direction of air convection circulation of the air channel faces the side face and the lower portion of the workpiece needing annealing, and a heat preservation layer is attached to the inner surface of the outer shell plate. The shell plate is used for supporting a main body structure of the furnace body, the air duct is used for achieving circulation convection of air flow, the annealing efficiency and the annealing quality of the metal coiled materials are improved through circulation convection of high-temperature air flow, the heat preservation layer is used for storing internal heat, reducing energy leakage and effectively reducing loss, and the circulation fan is used for providing power for circulation convection of the air flow.

The invention relates to a boiler flue gas temperature dynamic compensation method based on CFD-reinforcement learning, and belongs to the technical field of boiler operation control. The method comprises the steps that boiler operation parameters and flue gas temperature data are collected in real time, a multi-scale coupling three-dimensional CFD model is constructed, a macroscopic gas-solid two-phase flow-combustion reaction-radiation heat transfer coupling algorithm and a microcosmic pulverized coal particle combustion dynamics algorithm are fused, and hearth and flue temperature distribution is simulated and output; building a CFD-reinforcement learning fusion agent based on a CFD model, taking similar working condition agent parameters as initial values, combining historical and virtual data staged training, and reinforcing the weight of a key temperature measurement point through a focusing regulation and control strategy; an echo state network-predictive control collaborative algorithm is adopted, real-time data are input to obtain an initial adjustment amount, and after security constraint optimization, a compensation execution mechanism is controlled to act. The flue gas temperature is accurately and dynamically compensated, the adaptability to complex working conditions is improved, and equipment safety and operation efficiency are both considered.

The invention provides a dynamic diversion system of a homogenizing furnace, and relates to the field of industrial heat treatment equipment. The dynamic flow guide system of the homogenizing furnace comprises an outer wall, a furnace body, a hearth, a high-heat circulating fan and a flow guide cover body, and the furnace body is arranged in the outer wall. According to the invention, temperature data of multiple areas in the hearth are collected in real time through a temperature sensor, and in combination with closed-loop control of a controller on a first positive and negative motor, dynamic adjustment of the rotation angle of a flow guide plate and mechanism design of an eccentric rotating shaft and a movable groove, rotation motion of the first positive and negative motor is converted into multi-angle swing of the flow guide plate; the dynamic deflection of the flow guide plate can respond to the change of a temperature field in real time, the airflow path limitation of fixed flow guide is broken, the stagnant airflow in the right-angle area of the hearth participates in circulation again, and the linkage control logic of the controller, the temperature sensor and the first positive and negative motor realizes the temperature-flow guide angle self-adaptive adjustment; therefore, the dynamic balance of the temperature field can be completed without manual intervention.

The invention relates to the technical field of solid waste incineration automatic control, and discloses a solid waste incineration equipment automatic control method and system.The method comprises the steps that real-time data of solid waste components in a hearth are collected, and an initial multi-dimensional parameter set is obtained through preprocessing; calculating a balance point of the heat value and the water content through fuzzy reasoning; when the balance point exceeds a threshold value, parameter interaction influence is predicted, and a multi-dimensional control vector is generated; performing data fusion and historical data matching in combination with real-time incineration process indexes to obtain an enhanced load distribution adjustment factor; carrying out weight comparison based on the adjustment factor and the balance point, judging a load balance influence index, and carrying out matching correction if the index exceeds a compatible threshold value; updating a load distribution scheme according to a correction result, and generating a final operation strategy; and a control instruction is sent through a feedback cycle mechanism and is continuously optimized, so that closed-loop control is realized. The device can adaptively treat dynamic changes of solid waste components, and the incineration efficiency and stability are improved.

The graphitized product secondary roasting charging and discharging process comprises the following steps that S1, a high-purity graphite support or a multi-layer support structure is arranged in a hearth of a graphite furnace, and a graphite product is hoisted to the graphite support or the multi-layer support through a special clamp for charging; s2, sectional heating is adopted, the heating process is divided into a low-temperature section, a medium-temperature section and a high-temperature section, and the heating rate of each stage is controlled; s3, after roasting is completed, natural cooling is conducted, and after the temperature is reduced to the preset temperature, products are discharged out of the furnace; s4, the graphite product is clamped through a special clamp to be lifted out of the furnace, and in the step S1, the graphite product is vertically arranged on the graphite support and is arranged on the multi-layer support structure in a layered mode; when the secondary roasting charging and discharging process for the graphitized product is used, the stability and roasting uniformity of the product in a hearth can be guaranteed, segmented heating roasting is carried out in the furnace, graphite product cracking or performance reduction caused by temperature fluctuation can be avoided, the product quality is guaranteed, and the secondary roasting charging and discharging process for the graphitized product is suitable for application and popularization.

The invention discloses a system for controlling a fluid space field in a hearth based on a large model, and relates to the field of fluid space field control. The distributed sensor network, the data acquisition device, the distributed storage device and the edge computing device are arranged, the small prediction model and the large correction model are deployed in the edge computing device, the small prediction model is used for prediction, and the large correction model is used for correcting the prediction result, so that the prediction precision and stability are improved, and the prediction efficiency is improved. Based on the fluid space field data measured by the limited sensors in the hearth, prediction of the fluid space field in the hearth is completed, the fluid space field in the hearth is controlled based on the prediction result, and the control precision and stability of the fluid space field in the hearth are guaranteed.

The invention relates to a soot blowing optimization method for an intelligent circulating fluidized bed boiler, belongs to the technical field of boiler equipment and intelligent control, and is suitable for efficient operation and maintenance of circulating fluidized bed (CFB) boilers in the industries of electric power, chemical engineering, metallurgy and the like. The method aims at solving the technical problems that real-time sensing of the soot deposition state is insufficient, and soot blowing strategy hysteresis is high. The method comprises the steps of multi-dimensional data real-time acquisition and fusion, dust deposition state intelligent prediction and decision making, closed-loop feedback optimization and adaptive adjustment, and system integration and intelligent operation and maintenance. A high-precision sensor network (including hearth temperature, flue gas parameters, heating surface temperature gradient and the like) is deployed in a key area of a boiler, an infrared thermal imaging or image recognition technology is combined to monitor an ash deposition state, and an ash deposition prediction model is constructed through a machine learning algorithm (such as LSTM, random forest and CNN). Based on real-time data and model analysis, the soot blowing frequency, strength and medium parameters are dynamically adjusted through fuzzy control or a self-adaptive PID algorithm, and accurate soot blowing is achieved.

The invention discloses bidirectional directional solidification equipment, and aims to pull a mold shell containing molten metal downwards or upwards in the same equipment, so that castings are subjected to directional solidification in opposite directions respectively. Therefore, the bidirectional directional solidification equipment comprises a directional solidification furnace, a hearth of the directional solidification furnace is divided into an upper cooling chamber, a middle heating chamber and a lower cooling chamber from top to bottom, and an upper crystallizer and a mold shell lifting mechanism are arranged in the upper cooling chamber; the mold shell lifting mechanism is used for driving an upper mold shell arranged on the upper crystallizer to descend into the middle heating chamber to be heated or to ascend into the upper cooling chamber to be directionally solidified, and a lower crystallizer and a mold shell lifting mechanism are arranged in the lower cooling chamber. The mold shell lifting mechanism is used for driving a lower mold shell arranged on the lower crystallizer to ascend into the middle heating chamber to be heated or descend into the lower cooling chamber to be directionally solidified.

The invention discloses a natural gas boiler cleaning device, and belongs to the technical field of boiler equipment.The natural gas boiler cleaning device comprises a boiler body and a combustor, the combustor is fixedly connected to one end of the boiler body, a smoke outlet is formed in the other end of the boiler body, a hearth is arranged in the boiler body, the combustor communicates with the hearth, and the combustor communicates with the hearth. The hearth is sleeved with a cleaning mechanism, the cleaning mechanism is slidably connected into the furnace body, one end of the furnace body is fixedly connected with an electric push rod, and the top end of the electric push rod is fixedly connected with the cleaning mechanism. In the using process of the boiler, the internal surface of the boiler can be regularly cleaned, incrustation generated on the inner wall of the boiler is removed, accumulation of the incrustation is delayed, the heat efficiency is improved, energy is saved, the frequency of overall overhauling and cleaning of the boiler during shutdown is reduced, and the production efficiency is effectively improved.

The utility model discloses a circulating fluidized bed boiler system capable of realizing deep peak regulation by regulating circulating ash. The circulating fluidized bed boiler system comprises a hearth, a separator, a return feeder, an ash cooler and a tail flue, one side of the top of the hearth is provided with an outlet, the outlet is connected with a separator, the upper part of the separator is connected with a tail flue, the bottom of the separator is connected with a return feeder, the return feeder is provided with a return feeder ash discharge port, and the return feeder ash discharge port is respectively communicated with the lower part of the hearth and an ash cooler; an outlet in one side of the ash cooler is connected with the slag warehouse. According to the system, the differential pressure transmitter is used for displaying the size of the differential pressure of the hearth to feed back the circulating ash amount, and the opening degree of the ash cooler is regulated and controlled to control the circulating ash amount entering the boiler, so that the influence of inertia of materials in a circulating loop on load change is reduced, the lowest stable combustion load of the boiler is reduced, and the peak regulation capacity of the boiler is greatly improved.

The embodiment of the invention discloses a fly ash coal oxygen-enriched melting intelligent control method based on multi-mode coupling prediction, and belongs to the technical field of solid waste recycling and intelligent control crossing. The method comprises the steps that S101, multi-source data collected by a sensor is obtained; step S102, obtaining control parameters through an intelligent control algorithm according to the multi-source data; s103, according to the control parameters, controlling an oxygen-enriched spray gun, a slurry outlet and a material ratio; wherein the step S102 comprises the sub-steps of performing decoupling prediction on the temperature T, the hearth negative pressure P, the flue gas oxygen concentration CO and the molten slurry yield Qp by adopting a multivariable decoupling prediction model; carrying out fuzzy control on the hearth negative pressure P by adopting a fuzzy self-adaptive PID (Proportion Integration Differentiation) controller; and a multi-objective optimization algorithm is adopted to calculate and obtain control parameters. The control method is small in melting temperature fluctuation, high in hearth negative pressure stability, high in quartz sand utilization rate, low in energy consumption per ton of molten slurry and high in heat preservation cotton qualification rate.

The utility model provides a crystallization roller way kiln for improving crystallization warping of microcrystalline glass. The crystallization roller way kiln comprises a furnace body with a hearth, an inlet is formed in one side of the furnace body, and an outlet is formed in the other side of the furnace body; a conveying device for conveying from the inlet to the outlet is arranged in the hearth; a temperature control system and a temperature control device matched with the temperature control system are arranged in the hearth; from the inlet to the outlet, the temperature control system comprises a heating unit and a cooling unit which are connected in sequence; the temperature control device comprises a top temperature control device and a bottom temperature control device which operate independently; and the conveying device is arranged between the top temperature control device and the bottom temperature control device. According to the crystallization process of the microcrystalline glass, the crystallization roller kiln disclosed by the utility model not only solves the problem that the microcrystalline glass is warped in the crystallization process, but also can correct and repair the warped microcrystalline glass by independently regulating and controlling the temperatures of the tops and the bottoms of the heating unit and the cooling unit.

The invention belongs to the field of wall type tangential combustion, and discloses a wall type tangential combustion method and system for combusting inferior coal, which can automatically adjust the gas amount and the air door opening by monitoring the pressure, the oxygen content and the gas flow in a hearth in real time. The accurate adjustment can ensure the optimal mixing proportion of the gas and the air, gas waste is avoided, the combustion efficiency is improved, and therefore the heat efficiency of the boiler is improved. The flame state information is continuously collected, the gas amount is adjusted in combination with flame stability, it is guaranteed that the combustion process is always in the optimal state, unburnt fuel and excessive discharged waste gas are reduced, and therefore the overall heat efficiency is improved. The combustion process is monitored in real time through the air pressure switch, the gas flow sensor, the flame ionization electrode and the like, and the gas amount and the air door opening degree are dynamically adjusted according to feedback signals. The automatic adjusting function can ensure that combustion is always in a stable and efficient state, and excessive or insufficient gas supply is avoided.

The invention discloses a vacuum consumable electric arc furnace with a hearth cleaning function, and relates to the technical field of electric arc furnaces, the vacuum consumable electric arc furnace comprises a mounting plate, a scraping part and a scrubbing part, a main pipe rotates to drive an arc-shaped scraper knife to rotate, various residual impurities on the inner wall of a hearth are scraped, and when the arc-shaped scraper knife makes contact with harder or large impurities, the arc-shaped scraper knife is driven to rotate. At the moment, an arc-shaped scraper knife extrudes a first spring, the collision force between the arc-shaped scraper knife and hard impurities is reduced through the first spring, a coating on the inner wall of the hearth is prevented from being damaged, a movable piston is pushed to move through a movable rod, liquid in a liquid storage cavity is extruded, and the liquid enters a blocking cavity through a connecting pipe and pushes a blocking piston to move; the through hole is aligned with the flow channel in the connecting rod, at the moment, the cleaning liquid enters the inclined nozzle through the flow channel in the connecting rod and is directly sprayed to the position where the arc-shaped scraper knife makes contact with the hard impurities, the hard impurities are independently further softened and diluted, the hard impurities are conveniently shoveled away by the arc-shaped scraper knife, and the cleaning efficiency is improved.

The invention relates to the technical field of boiler temperature measurement, and discloses a boiler furnace temperature field measurement system based on multi-sensor fusion. According to a temperature acquisition module of the system, a plurality of groups of infrared temperature measurement sensors and thermocouple sensors are arranged in preset space grids of a boiler hearth, and real-time temperature data of each space grid are synchronously acquired; the data fusion module performs time alignment and space registration on the acquired data to generate a space-time synchronous original temperature data set; the noise suppression module performs multi-scale decomposition on an original data set based on wavelet transform, extracts a high-frequency noise component and performs adaptive filtering, and outputs a temperature data sequence after noise reduction; the temperature field reconstruction module reconstructs a hearth three-dimensional temperature field distribution model through a radial basis function interpolation algorithm according to the denoised data sequence; and the dynamic compensation module calculates the heat conduction lag compensation amount of the temperature field distribution model according to the flowing speed of the flue gas in the hearth and the working condition parameters of the combustor, and generates a compensated dynamic temperature field model.

The invention relates to a vacuum purification crystallization furnace and an ultra-pure manganese purification method using the same. The vacuum purification crystallization furnace comprises a furnace body and a hearth, and a distillation part and a condensation part are arranged in the hearth from bottom to top; the hearth is provided with a first baffle at the top height of the distillation component and around the peripheral side of the distillation component; a second baffle is arranged at the position, close to the top of the condensation part, of the hearth and surrounds the peripheral side of the condensation part. The first baffle and the second baffle divide the hearth into a first temperature field, a second temperature field and a third temperature field which are independently controlled in temperature from bottom to top. According to the present invention, the temperature of the distillation region and the condensation region can be independently and accurately controlled, the impurities in the manganese raw material can be completely removed, the ultra-pure manganese product with the purity of more than 5N and the density of more than 7.40 g / cm < 3 > can be obtained, the product distribution is centralized, the stripping is easy, and the yield of the product is more than 85.9%.

The invention provides a fuzzy width hearth temperature model predictive control method, which relates to the technical field of hearth temperature model predictive control, and comprises the following steps: constructing a hearth temperature predictive model; obtaining a correction output variable according to the hearth temperature prediction model; according to a gradient particle swarm optimization algorithm and the correction output variable, solving an objective function of MPC corresponding to the hearth temperature prediction model to determine an optimal manipulated variable set; determining an optimal control law of the MPC according to the optimal manipulated variable set; according to the optimal control law, a control variable to be input is input into the hearth temperature prediction model, an initial controlled variable is obtained, the control variable is the secondary air volume, and the controlled variable is the hearth temperature; and correcting and compensating the initial controlled variable according to the prediction error at the current moment to obtain a final controlled variable. According to the method, the problems of high calculation complexity and low precision of the existing MPC control facing the FT in the MSWI process are solved.

The invention belongs to the technical field of combustors, and discloses a combustor and a cracking furnace, the combustor comprises a burner block, the burner block is configured to be arranged in a hearth of the cracking furnace, the burner block comprises two oppositely-arranged first brick bodies and two oppositely-arranged second brick bodies, the two first brick bodies and the two second brick bodies define an air flow channel, and the two first brick bodies and the two second brick bodies are arranged in the hearth of the cracking furnace. The first brick bodies are in a flat plate shape, the second brick bodies are in an arc shape, the axes of the two second brick bodies are located in the air flow channel, one of the two first brick bodies is an adjacent brick body, the other of the two first brick bodies is a fixed brick body, a furnace tube is arranged in the hearth, and the side, away from the air flow channel, of the adjacent brick body is arranged to be spaced from the furnace tube. According to the combustor, the distance between flame and the furnace tube can be increased, the probability that the flame impacts the furnace tube is reduced, then the probability that the local high temperature of the furnace tube occurs can be reduced, and the effect of prolonging the operation cycle of the furnace tube and the cracking furnace is achieved.

The invention discloses an aluminum alloy plate three-stage aging furnace and a heat preservation time calculation method, and relates to the technical field of aluminum alloy plate production. The aluminum alloy plate three-stage aging furnace comprises a furnace body and a hearth which is arranged in the furnace body and is used for carrying out aging treatment on plates; a suspended ceiling is mounted in the hearth in an up-down sliding manner, the suspended ceiling is in sealing contact with the side wall of the hearth, the hearth is divided into an upper hearth and a lower hearth by the suspended ceiling, and a plate needing aging treatment is positioned in the lower hearth; an air inlet and an air outlet are formed in the side wall of the lower hearth; an air supply system is connected between the air inlet and the air outlet; a lifting driving device for driving the suspended ceiling to slide up and down and a control system in signal connection with the lifting driving device are arranged on the outer side of the furnace body; the control system is in signal connection with the air supply system. The calculation mode of the three-stage aging furnace and the heat preservation time is optimized, so that the stress corrosion resistance of the treated aluminum alloy plate is improved, and meanwhile, the strength loss is small.

The invention relates to the field of hearth flame detection, and particularly discloses a hearth flame detection device and method, and the method comprises the following steps: a, capturing a flame image in a hearth through a high-resolution infrared thermal imager, and transmitting the flame image to an image processing unit; step b, executing the following operations in the image processing unit to evaluate and optimize the image quality: removing noise in the image by applying an adaptive median filtering algorithm, wherein the algorithm effect is quantified by calculating a flame image noise removal effect evaluation value Enoise (l); the flame state parameters are monitored in real time, once the parameters are lower than the preset threshold value, the safety pre-warning system is triggered immediately, the real-time monitoring and pre-warning mechanism helps to find and handle potential problems such as instability or extinguishment of flames in time, and therefore safety accidents are effectively prevented.

The invention discloses a coal-fired boiler combustion instability monitoring method and system based on multi-parameter fusion, and the method comprises the steps: constructing a hearth flame imaging system which comprises an image detector, a lens, a stainless steel cavity and a cooling air channel; the flame image intensity is converted into radiation intensity through blackbody furnace calibration, and the flame temperature and emissivity are calculated based on the Planck law; extracting flame characteristic parameters including average radiation intensity, temperature, emissivity and standard deviation thereof; constructing a load-flame characteristic parameter model, and predicting parameter reference values under different loads through multiple linear regression; and calculating a combustion instability index CII, carrying out weighted fusion on the normalized deviation of the real-time measured value and the predicted value, and judging that CII is equal to 1 when the flame area is 0 or the average temperature is lower than 900 DEG C. The flame radiation image and the unit operation parameters are fused, and the limitation of traditional single-parameter monitoring is solved; combustion instability dynamic quantitative evaluation is achieved through the CII index, and the method is suitable for early warning of the deep peak regulation working condition.

The invention discloses a method and system for optimizing temperature uniformity of a hearth of a temperature isostatic pressing machine, and the method comprises the steps: arranging a plurality of layers of temperature measurement planes and a temperature monitoring network in the hearth, collecting all-region temperature data in real time, calculating three-dimensional temperature field distribution and uniformity indexes, generating a heater power regulation and control instruction in combination with the indexes, and controlling the temperature uniformity of the hearth of the temperature isostatic pressing machine. And dynamically adjusting the output power of the partitioned independent controllable heater array. According to the method, the whole area of a hearth is covered through multi-layer temperature measurement, temperature uniformity is evaluated through quantitative indexes, prospective power compensation is achieved with the help of a predictive control algorithm, control parameters are optimized through a thermodynamic simulation model, the problems that a traditional temperature isostatic pressing machine is incomplete in temperature monitoring and poor in heating regulation and control pertinence are solved, and the temperature isostatic pressing efficiency is improved. And the temperature uniformity of the hearth is greatly improved, the heating consistency of workpieces is guaranteed, and the device is suitable for a warm isostatic pressing machining scene of high-precision material forming.

The utility model relates to the technical field of hot punching forging, and provides an energy-saving double-turbine cyclone forging heating hearth which comprises a double-arch-shaped energy-saving cyclone hearth, a metal frame surrounds the outer surface of the double-arch-shaped energy-saving cyclone hearth, and high-temperature glass fiber inner cotton is filled between the double-arch-shaped energy-saving cyclone hearth and the metal frame. A metal plate fixing shell is fixedly mounted on the outer surface of the metal frame, high-temperature glass fiber heat preservation cotton wraps the outer surface of the metal plate fixing shell, a hearth outer frame protection metal plate is fixedly connected to the outer surface of the high-temperature glass fiber heat preservation cotton, a mounting shell is mounted on the right side face of the metal frame, and two first heating guns are mounted in the mounting shell. A second heating gun is installed in the middle of the upper surface of the double-arch-shaped energy-saving cyclone hearth. By means of the technical scheme, the problems that in the prior art, due to the fact that comburent of a traditional hot hearth is not sufficiently combusted, resources are wasted, and meanwhile smoke greatly affects the environment are solved.

The invention provides a single infrared probe hearth section temperature field detection method and system, and relates to the technical field of temperature detection, and the method comprises the steps: obtaining a preset simulation detection space and environment information around a hearth; a first detection temperature at the first preset point location is collected, and a first distance between the first preset position and the first preset point location is determined; acquiring a second detection temperature at the first preset point location; determining an error relation function according to the first distance, the first detection temperature, the second detection temperature and the environment information; collecting hearth section temperature data at a plurality of second preset point locations in the hearth section, and determining coordinate information of the second preset point locations in the hearth coordinate system; determining a hearth section temperature field detection score according to the hearth section temperature data and the coordinate information; and generating a hearth section temperature field detection report according to the hearth section temperature field detection score. According to the invention, the accuracy of the hearth section temperature field detection result can be improved.

The invention provides an SNCR (selective non-catalytic reduction) intelligent denitration system based on a sound sensing technology, and relates to the technical field of flue gas denitration. The hearth temperature calculation module sequentially sounds and receives the multiple sound wave signal flows, multiple hearth path temperatures are obtained through calculation and uploaded to the central processing unit through the temperature field reconstruction module, and a hearth combustion temperature field graph is generated through calculation; the denitration strategy control module is used for matching and analyzing a denitration strategy according to the hearth combustion temperature field graph and determining target denitration control strategy parameters; and the feedback optimization module adopts the parameters to execute denitration control operation, and regulates and updates target denitration control strategy parameters according to the denitration effect. The technical problem that SNCR denitration control is difficult to accurately match with the optimal reaction zone due to low temperature measurement means precision and insufficient spatial resolution in the prior art is solved, the SNCR denitration efficiency is improved, and ammonia escape is reduced.

The invention discloses a method and system for directly reducing iron ore powder through a gas-based multi-hearth furnace, and the method comprises the steps that the iron ore powder and reducing gas are subjected to a reduction reaction in a multi-hearth furnace reactor, and reduced metal iron is obtained; the reducing gas is H2 and / or CO, and the reduction temperature is 700-800 DEG C. According to the method and the system, a multi-hearth furnace is adopted, material flow and high-temperature gas are subjected to countercurrent heat convection exchange reaction from top to bottom through a mechanical transmission device, and the method and the system have the advantages of large hearth area, multiple gas-solid interfaces, long retention time of materials in the furnace, high reduction efficiency and the like; the method is suitable for treating powder substances with low heat value. According to the method and the system, the iron ore powder is directly reduced through the multi-hearth furnace, a pelletizing step necessary for an existing hydrogen-based shaft furnace reduction method is omitted, the problem of particle bonding and flow loss of a fluidized bed hydrogen reduction method is effectively solved, and the method and the system have the advantages of low CO2 emission, low energy consumption, high product metallization ratio and the like.

The embodiment of the invention provides an intelligent soot blowing method, system and equipment for dry deslagging of a tower type boiler and a storage medium. The method comprises the steps that the furnace bottom slag falling condition and the dry slag discharging transportation amount corresponding to a current soot blowing heating surface area are obtained in real time; according to the furnace bottom slag falling condition and the dry slag discharging transportation volume, the soot blowing effect of each heating surface area of the hearth is judged; controlling the soot blowing frequency of each heating surface area of the hearth according to the soot blowing effect of each heating surface area of the hearth and a pre-established soot blowing strategy; wherein the soot blowing strategy is obtained through fuzzy logic calculation according to a soot condition monitoring model, a soot blowing expert system and a soot blowing economic model. According to the embodiment of the invention, the boiler bottom slag falling condition and the slag discharging amount condition of the heating surface area are monitored in real time, so that fine control of boiler soot blowing is realized, and the problem that soot blowing of the heating surface area of a high-capacity and high-parameter combustion boiler is generally extensive is solved.