3680 results about "Flue" patented technology

According to the boiler heating surface crack detection method based on millimeter-wave radar imaging, the millimeter-wave radar is used for boiler heating surface detection, the limitation of a traditional visual means in smoke shielding and weak light environments is broken through, millimeter-wave radar detection equipment is integrated on a small unmanned aerial vehicle / robot platform, and the detection accuracy is improved. The compact mobile intelligent terminal is formed and can go deep into narrow or high-risk areas such as a boiler furnace, a horizontal flue and a tail flue which are difficult for personnel to enter to execute detection, and compared with a traditional method that equipment needs to be disassembled or scaffolds need to be erected for inspection, the mobile terminal scheme greatly reduces the difficulty of overhaul preparation and implementation, and the maintenance efficiency is improved. Through multi-angle and multi-frame radar image super-resolution fusion, presentation of cracks in the images is remarkably enhanced, tiny anomalies are clear and distinguishable in a complex background, defect features are automatically extracted by introducing the convolutional neural network, and the method is more objective and accurate compared with manual rule discrimination.

The invention discloses a pyrolysis recovery system for cooperative treatment of waste wind power blades by a power station boiler, and belongs to the technical field of solid waste recovery. The system comprises a power station boiler, a pyrolyzing furnace, a mixed flue, a nitrogen air flue and a controller. Oxygen is accurately controlled by mixing flue gas at different temperature levels and mixing nitrogen, and a safe and stable heat source is provided for the pyrolyzing furnace; pyrolysis gas returns to a boiler hearth through an outlet flue to be burnt out, and recyclable fibers and residues are conveyed out through a chain grate stoker; and the controller is linked with each sensor to execute oxygen control, temperature regulation, fiber quality protection and safety interlocking operation. The problems that in pyrolysis of the waste wind power blade, heat source adaptability is poor, oxygen concentration is out of control, fiber quality is poor, the risk is high, and pyrolysis gas is difficult to dispose are solved, and gradient utilization of energy, intrinsically safe operation, high-quality and high-purity recovery of fibers and collaborative treatment of pollutants are achieved.

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.

According to the incineration pollution cooperative control method based on multi-target reinforcement learning, a multi-modal sensor array is deployed in a hearth, a flue and a fly ash processing unit, multiple parameters such as combustion temperature and flue gas retention time are collected in real time to construct a high-dimensional dynamic characteristic matrix, and data collection and processing are carried out to meet subsequent model requirements. Based on the dynamic characteristic matrix, defining three types of objective functions of pollutant emission minimization, fly ash metal recovery rate maximization and resource cost minimization, adopting a depth deterministic strategy gradient algorithm to construct a multi-objective reinforcement learning joint optimization model, and taking a combustion air ratio and the like as an action space; and strategy exploration and value evaluation are realized through a dual-network structure. Meanwhile, a priority evaluation module based on fuzzy logic is constructed, the weight coefficient of an objective function is dynamically adjusted according to real-time working conditions, and dynamic weight distribution and multi-objective collaborative optimization control are achieved. According to the method, multiple targets in the waste incineration process can be effectively balanced, the incineration efficiency and the resource utilization level are improved, and pollutant emission is reduced.

The invention relates to the technical field of automatic control, and discloses an intelligent ash deposition prevention self-cleaning system for a flue of a low-temperature economizer of a coal-fired power plant. According to the system, data such as temperature, humidity and flue gas components in a flue are acquired in real time through the data acquisition module, the dust deposition condition and cleaning requirements of the flue are accurately evaluated, the omission phenomenon caused by misjudgment in the manual cleaning process is avoided, the data processing and analysis module improves the data processing precision, and the data processing and analysis efficiency is improved. The system can also monitor the running state of the flue in real time, so that a cleaning instruction is automatically sent out when necessary, the timeliness and effectiveness of cleaning work are ensured, the cleaning execution module can efficiently remove accumulated dust while reducing the temperature of the flue through a mode of combining high-pressure airflow, a vibration device and a water spraying system, the time needed by cleaning is remarkably shortened, and the cleaning efficiency is improved. And the monitoring feedback module evaluates the cleaning effect, it is ensured that each time of cleaning can reach the preset standard, and the intelligent level and safety of flue cleaning are further improved.

The invention relates to the technical field of metal smelting, and discloses a control system and method for a multi-gun top-blown immersion bath smelting furnace, and the smelting furnace comprises a furnace wall surface, a bath solution, a metal sulfur discharge port, a slag outlet, swirl vanes, a feeding port, spray guns and a flue outlet. The system comprises a data acquisition module which is used for monitoring the temperature, the liquid level, the components and the material state in the multi-gun top-blown immersion molten pool smelting furnace in real time to obtain monitoring data in the multi-gun top-blown immersion molten pool smelting furnace; the data analysis module is used for cleaning the monitoring data to obtain the cleaned monitoring data, performing dimension reduction on the cleaned monitoring data, and identifying key features influencing the smelting quality and efficiency; and the prediction feedback module is used for constructing a smelting process theoretical model and an interaction model, and realizing dynamic monitoring data prediction and adaptive multi-gun top-blown immersion bath smelting furnace parameter adjustment in the smelting process. The output of the spray gun is automatically adjusted, system abnormity is prevented, and early warning is given out in time when potential risks occur.

The utility model discloses an energy-saving flue gas treatment device for an electric melting furnace, and relates to the technical field of flue gas treatment of electric melting furnaces. The device comprises a base and further comprises a purification box arranged on one side of the top of the base, a heat exchange box is arranged on the other side of the top of the base, a smoke inlet flue is connected to one side of the top of the heat exchange box in an inserted mode, and a liquid level meter is arranged at the front end of the heat exchange box. The spraying dust-settling assembly is arranged on the other side of the purifying box, water in the purifying box is pumped out through the pump machine during use, impurities in the filter cover are used for filtering, the situation that the impurities are sucked into the pump machine and attached to an impeller for a long time, and normal operation of the pump machine is affected is avoided, the impurities are conveyed into the annular spraying pipe through the conveying pipe, and the water purifying efficiency is improved. And then the flue gas which is fused with the water body and absorbs impurities is further absorbed and subjected to dust falling treatment under spraying of the spraying opening, so that the flue gas treatment effect of the device by utilizing a liquid absorption method is further improved, and the practicability is high.

The invention discloses a coal-fired boiler intelligent optimization method, system, equipment and medium based on multi-source perception, and belongs to the technical field of thermal power generation, and the method comprises the steps: carrying out the collection of boiler coal data of a coal-fired boiler, and carrying out the feedback compensation; collecting hearth data to reconstruct a combustion field, formulating an optimization control strategy, and constructing an optimization target to perform tail flue multi-component cooperative control; and carrying out dynamic adjustment based on an implementation result of the control strategy, and carrying out real-time monitoring to carry out coking early warning. According to the method, full-closed-loop intelligent control of coal quality perception, combustion optimization and coking prevention and control is formed, and by means of edge calculation layering processing, the boiler efficiency is improved, the power supply coal consumption is reduced and the cost is saved while it is ensured that emission reaches the standard.

The invention discloses a high-humidity flue gas generating device for a test, and belongs to the field of flue gas monitoring test equipment. The invention discloses a high-humidity flue gas generating device for a test. The shell comprises a flue; the steam generator is located in the shell and fixedly connected with the shell; the atomizer is located in the shell and fixedly connected with the shell; the fan is fixedly connected with the shell; the water pump is fixedly connected with the shell; the water pump comprises a water inlet pipe and a water outlet pipe; the water inlet pipe is provided with a filtering assembly; the water outlet pipe is used for adding water to the steam generator; the control module is mounted on one side of the shell and is in communication connection with the steam generator, the atomizer and the water pump; wherein a standard gas inlet is formed below the flue; the standard gas inlet is used for conveying pollution gas to a flue; and a sampling port is formed above the flue. The high-humidity flue gas generating device for the test has the beneficial effect that the high-humidity flue gas generating device for the test is convenient to monitor.

The utility model discloses a seawater concentration bromine extraction system based on deep waste heat recovery and new energy driving, and belongs to the technical field of salt chemical industry and new energy. On the basis of an existing seawater concentration bromine extraction system, a new energy mode is adopted for process heating, and heat exchange jackets are arranged on the outer walls of a sulfur combustion furnace 1 and a high-temperature SO2 flue 3; low-temperature air is sequentially fed into a heat exchange sleeve 26 and a heat exchange sleeve 20 through an air feeder 21 and exchanges heat with high-temperature and high-corrosion flue gas in a flue and higher-temperature flue gas in a sulfur combustion furnace, then the low-temperature air is fed into a miniature high-temperature waste heat hot water boiler 10, water is fed into a heating furnace, and cooled flue gas is subjected to circulating heat exchange through the air feeder 21. High-temperature water of the miniature high-temperature waste heat hot water boiler 10 is fed into the flash tank 23 and generates flash steam, and after the temperature of outlet water is reduced, the outlet water returns to the flash tank 23 for circulating heat exchange. Flash steam of the flash tank 23 is mixed with steam produced by the high-temperature heat pump steam producing device 37 and the new energy electric heating steam furnace 38, and then the mixture is sent to the liquid chlorine water bath 51 and the like for process heating.

The invention relates to the technical field of non-ferrous metal smelting flue gas treatment and resource utilization, and discloses a non-ferrous metal smelting multi-source flue gas efficient mixing and intelligent regulation and control method and system.The method comprises the steps that flue gas from different kilns enters a main flue through a multi-source flue gas branch regulation and control unit, and through rotational flow momentum, the multi-source flue gas enters the main flue; the basic consistency of each source flue gas structure is achieved; carrying out real-time evaluation on the mixed smoke on a key section; the multi-point sensor array continuously measures data and calculates a uniformity index to realize instant identification of flow field uniformity, time stability and local anomaly; based on measurement data, the intelligent control and operation optimization unit solves a comprehensive performance function in real time on a DCS / PLC platform. The system comprises a plurality of flue gas outlets, a top-blown furnace discharge outlet, a multi-source flue gas branch regulation and control unit and an annularly-collected flue gas total outlet. According to the method, the influence of inlet disturbance on the mixing quality is regulated and reduced from the source.

The invention discloses a heating furnace control method and system based on expert control and a storage medium, and the method comprises the following steps: constructing an expert knowledge employing a generative rule to represent combustion control knowledge, and the rule form is IFlt; a precondition gt; tHNt, THNt, THNt; performing conclusion operation gt; the preconditions comprise a furnace temperature error range, a furnace pressure state, a flue gas temperature and a reversing period parameter, and the conclusion operation comprises gas flow adjustment, air-fuel ratio correction, and setting of a flue valve opening degree or a burner reversing period; dynamic parameter prediction and optimization: calculating a predicted temperature value under the current working condition based on a furnace temperature prediction model; performing multi-target collaborative reasoning: searching a matching rule set in a heuristic manner, and combining a Hash algorithm to quickly position a control conclusion; the optimized air-fuel ratio, reversing period and furnace pressure parameters are issued to a PLC, and an execution mechanism is driven to adjust the frequency of a gas valve, the frequency of an air valve and the frequency of a smoke exhaust fan; and self-learning and knowledge base updating: dynamically correcting the rule weight according to the historical control effect.

The invention relates to the technical field of waste heat recovery equipment, in particular to a sintering rotary furnace waste heat composite recovery structure which comprises a rotary furnace body, a boiler body, an energy saver and a flue gas treatment device. The two ends of the economizer are connected with a boiler body flue and the flue gas treatment device respectively, the flue gas treatment device comprises a compression cavity, a piston, a driving device, a water outlet, an exhaust port, a vortex tube and a recovery cavity, the compression cavity is communicated with the economizer through a throat pipe, the piston is located in the compression cavity and forms a moving pair with the compression cavity, and the driving device can drive the piston to move. The water outlet and the exhaust port are communicated with the compression cavity, the recovery cavity surrounds the outside of the compression cavity and is communicated with the hot air outlet of the vortex tube, four-time waste heat recovery is achieved through mutual cooperation of all the components, and the waste heat recovery efficiency is high.

The invention discloses a biomass blending combustion coal-fired power generation system and method based on low-temperature aerobic upgrading. The system comprises a biomass bin, and a crushing unit is arranged at a discharge port of the biomass bin; the discharging end of the crushing unit is sequentially connected with a low-temperature aerobic upgrading device, a coal bunker unit and a coal mill through a conveying mechanism; the coal mill is connected with a coal-fired boiler, and the coal-fired boiler is provided with an SCR reactor; a heat source inlet of the low-temperature aerobic upgrading device is connected to a tail flue behind the SCR reactor, and tail flue gas of the SCR reactor is used for heating; tail gas of the low-temperature aerobic upgrading device is conveyed to the coal-fired boiler through the centrifugal fan to be combusted and purified, and the system achieves real-time monitoring and control through the central control system and the monitoring unit. According to the invention, high-efficiency and low-cost treatment can be carried out on the biomass, the problems of moisture content, high volatile components, grindability and the like of the biomass are effectively improved while the high energy recovery rate is reserved, and large-scale stable blending combustion of the biomass in a large coal-fired boiler is realized.

The invention discloses a treatment system and method for waste incineration fly ash washing liquid cooperating with flue gas purification, and the system comprises a semi-dry desulfurization tower, a dust remover, an ash silo, a washing tank, a buffer tank, a water supply preheater and a wet washing tower which are connected with a main flue of an incineration plant, the method comprises the following steps: transferring waste incineration fly ash collected in the system into the water washing tank, and adding water for washing to obtain water washing liquid and desalted fly ash; the method comprises the following steps: spraying fly ash water washing liquid by using a wet washing tower, recovering tail flue gas waste heat, deeply removing residual acid gas in flue gas, concentrating and reducing the water washing liquid, and controlling the spraying amount to adjust the concentration ratio so as to realize the separation and solid-liquid separation of chlorine salt; introducing the concentrated water washing liquid into a semi-dry desulfurization tower, atomizing the water washing liquid into fine liquid drops by using a rotary atomizer, contacting the fine liquid drops with hot flue gas, evaporating the fine liquid drops to dryness, and absorbing acid gas in the flue gas at the same time, thereby realizing zero emission of the water washing liquid and cooperating with flue gas purification. According to the invention, the problem of high energy consumption of fly ash washing liquid treatment is solved, and the resource utilization rate of the washing liquid is improved.

Flue gas is compressed to high pressures, which raises the partial pressure of carbon dioxide thus facilitating its absorption into physical solvents (e.g., water, salt solutions, methanol). When added onto an existing CO2-producing process, the compression is performed using multiple stages with intercooling. After the high-pressure carbon dioxide dissolves into the physical solvent, it flows through a series of pressure letdowns using turbines that allow the dissolved carbon dioxide to evolve from the solvent. Through a series of multiple compression stages, the evolved gas is compressed for transport, utilization, or storage. The flue gas that has been scrubbed of carbon dioxide flows through a series of expanders with interheating supplied from waste heat, or the heat of compression. The process is enhanced by employing alkalis that chemically react with acid gases, such as carbon dioxide. These same CO2-capture processes can be integrated into processes that produce shaft and / or electrical power.

The utility model relates to the technical field of household appliances, in particular to a liquid drainage mechanism and cooking equipment applying the same. The liquid discharge mechanism comprises a box body, a liquid inlet pipe, an exhaust pipe and an atomization mechanism, the liquid inlet pipe is communicated with the interior of the box body, the exhaust pipe is respectively communicated with the interior of the box body and the flue, at least part of the atomization mechanism is arranged in the box body, and gas formed by liquid in the box body through the atomization mechanism can be discharged to the flue through the exhaust pipe. Through the arrangement of the liquid discharging mechanism, waste water in the liquid discharging mechanism can be directly converted into a gas state and discharged from the flue, and the cleaning frequency and cleaning difficulty of a user on the liquid discharging mechanism and the oil cup are reduced. The cooking equipment comprises the liquid discharging mechanism, so that the cleaning frequency and cleaning difficulty of the liquid discharging mechanism and the oil cup by a user can be reduced.

The invention relates to the technical field of tail gas treatment, and discloses a dragon kiln tail gas waste heat recovery device which is characterized in that a dragon kiln flue is designed to be Z-shaped, and a Z-shaped heat exchange plate is additionally arranged in the dragon kiln flue, so that after being sucked into a heat exchange cavity of the dragon kiln flue by a guide fan, high-temperature tail gas is influenced by a turning point of the Z-shaped heat exchange plate and is impacted and rotationally decelerated; meanwhile, in the process of guiding a fan to rotate, an eccentric block is driven to synchronously rotate, so that different point positions on the same circumference on the inclined surface of the eccentric block are in contact with a contact ball, and a spring III is matched to drive a straight moving pipe to do straight reciprocating motion, so that the straight moving pipe drives a heat exchange plate I to synchronously move; the heat exchange plate I drives the heat exchange plate II to perform inclined reciprocating motion, and the heat exchange plate II drives the heat exchange plate III to perform inclined reciprocating motion, so that cold medium turbulence in the heat exchange plates is intensified, and in the reciprocating motion process of the heat exchange plates, the contact amount between the heat exchange plates and high-temperature tail gas in unit time is increased.

The application discloses a supplemental combustion type flue gas molten salt heat exchanger and a working mechanism thereof, characterized in that: a supplemental combustion device is added in the upstream of a flue gas molten salt heat exchanger, the supplemental combustion device is connected with the flue gas molten salt heat exchanger through a flue, and a supplemental combustion type flue gas molten salt heat exchange integrated device is formed; the device comprises a supplemental combustion device or a supplemental combustion device, and a first-stage flue gas molten salt heat exchange component. The application can realize the functions of more uniform and efficient supplemental combustion heat transfer in the flue gas, realize a safer ignition mode of the supplemental combustion gas or the mixed body of the atomized supplemental combustion gas and liquid (or gas powder) outside the flue, realize the function of more convenient monitoring of the supplemental combustion, realize the complete decoupling of heat and electricity in the combustion engine power generation heat supply energy storage system, and realize the functions of self-supply of external power, heat storage or heat supply of the system.

The waste heat utilization equipment comprises a main flue, a bypass outlet and a bypass inlet are formed in the middle side wall of the main flue, a dust removal system is arranged on the main flue, and the bypass inlet is located in front of the dust removal system; an inlet of the bypass flue is connected with the bypass outlet, and an outlet of the bypass flue is connected with the bypass inlet; the heat exchanger is arranged on the bypass flue and connected with a water supply system of the boiler; the baffle device is arranged at an outlet of the bypass flue; the first temperature instrument is arranged on the side wall of the main flue and located between the bypass inlet and the dust removal system; and the controller is electrically connected with the baffle device and the first temperature instrument, and the controller is used for controlling the baffle opening degree of the baffle device based on the detected temperature of the first temperature instrument so that the flue gas temperature at the inlet of the dust removal system can be within a preset first temperature range. The technical problem that the waste heat utilization rate of the boiler is low is solved.

The invention relates to the technical field of flue gas flow monitoring, and discloses a method and device for measuring flue gas flow in a partitioned mode, and the method comprises the steps that the whole flue section is equally divided into a plurality of partitions, and at least one preset monitoring point is arranged in each partition; according to the flue gas temperature, the flue gas pressure, the flue gas differential pressure and the real-time flue gas density, the flue gas average flow velocity of each partition is calculated; setting different weight coefficients for each subarea according to the distribution condition of the flue gas flow field or the unit load, and calculating the average flue gas flow velocity of the flue section according to the average flue gas flow velocity of each subarea and the weight coefficients; and according to the flue gas average flow velocity of the flue section and the flue section, calculating to obtain the flue gas standard dry flow. The whole section is equally divided into a plurality of partitions, and grid method measurement of the whole flue gas interface is achieved. Meanwhile, the most representative feature point location is determined according to the polling measurement result of the conventional point location or the unit load, and the problem that point location selection of a traditional method lacks representativeness is solved.

The invention relates to the technical field of flue gas denitrification, and discloses a flue gas baffle system for an SCR (Selective Catalytic Reduction) denitrification device and a use method.The flue gas baffle system is provided with a control system and a matrix flowmeter, a baffle assembly is composed of a plurality of baffle units, each flue is uniformly divided into a plurality of subareas, and each subarea corresponds to a group of adjusting units; and each baffle unit correspondingly controls one subarea of the cross section, so that the technical effects of automatically detecting the flow field at the inlet of the reactor and automatically adjusting the angle of the baffle under different loads or different flow field conditions are realized, the uniformity of the flue gas flow field under different loads is improved, the adaptability of the SCR denitration device to the loads is improved, and the service life of the SCR denitration device is prolonged. The ammonia escape amount when the load or the flow field changes is reduced, and the technical problem that in the prior art, an SCR denitration device cannot adjust the flue gas flow field according to the incoming flow characteristics of flue gas and cannot adjust the flue gas flow field when the performance of an existing flow equalizing device is damaged is solved.

The invention relates to a circulating fluidized bed boiler system, comprising: a main circulating fluidized bed boiler comprising a main hearth, a main separator, a main return feeder and a flue; the activation and modification device comprises a coal slime inlet and a gas-solid fuel outlet, the coal slime is suitable for being at least partially gasified and combusted in the activation and modification device to form gas-solid fuel flowing out of the gas-solid fuel outlet, and the gas-solid fuel outlet is communicated with a fuel nozzle arranged in the main hearth. The invention further relates to a coal slime activating treatment method which comprises the following steps: at least part of coal slime is gasified and combusted in the activating and modifying device to generate gas-solid fuel; and gas-solid fuel is led to the middle lower part of the hearth of the circulating fluidized bed boiler. The scheme can be used for flexible peak regulation of the boiler.

The utility model relates to a liquid level detection device of a coke oven flue inspection well, which is characterized in that the top end of a stand column is vertically and fixedly connected with a top concrete foundation layer, the bottom end of the stand column is vertically and fixedly connected with a bottom concrete foundation layer, and liquid level switches comprise a liquid level switch I, a liquid level switch II and a liquid level switch IV; the stand column is sequentially provided with a first liquid level switch, a second liquid level switch, a third liquid level switch and a fourth liquid level switch from top to bottom, the first liquid level switch is used for detecting the ultrahigh liquid level of the inspection well, the second liquid level switch is used for detecting the high liquid level of the inspection well, the third liquid level switch is used for detecting the low liquid level of the inspection well, and the fourth liquid level switch is used for detecting the ultralow liquid level of the inspection well. The drainage pump is connected with a drainage pipe. The pull rod type liquid level switch has the advantages that the pull rod type liquid level switch is fixed to the metal stand column through the metal fixing ring, and the problems that a flexible wire is aged and longitudinally deformed after being stretched for a long time and the liquid level switch moves when floating or drooping are solved; the included angle between the adjacent liquid level switches is alpha, so that the problem of physical collision of the adjacent liquid level switches in the vertical direction is prevented.

The invention discloses a petrochemical industry flue gas denitration device and a using method thereof, and relates to the technical field of flue gas treatment.The petrochemical industry flue gas denitration device comprises a flue and an ammonia water spraying assembly, the ammonia water spraying assembly is fixedly installed at the bottom of the flue and used for spraying ammonia water to be mixed with flue gas, and the outlet end of the flue communicates with a main denitration tower; the interior of the main denitration tower is fixedly connected with a heating layer and a replacement auxiliary mechanism, the replacement auxiliary mechanism is arranged in the main denitration tower, the replacement auxiliary mechanism comprises a gas inlet pipeline communicated with the back surface of the main denitration tower, and the rear end of the gas inlet pipeline is communicated with an auxiliary denitration tower; a plurality of catalyst layers are arranged in the main denitration tower and the auxiliary denitration tower, so that the problem that the operation of the denitration device is interrupted and the operation of the denitration device and upstream and downstream devices is influenced due to the replacement process of the catalyst layers is solved.

The invention belongs to the technical field of industrial combustion safety control, and provides a double-channel industrial furnace gas combustion safety interlocking control system which comprises a gas / air flow ratio dynamic monitoring module, a flue CO concentration online detection module, a double-channel data conflict arbitration processor and a visual human-computer interface. Aiming at the prominent problems of incomplete combustion of coal gas, carbon deposition, detonation risk and the like which are easy to occur under the working condition of accelerated temperature rise, the system integrates visual double-insurance safety control of dynamic calculation of a flow ratio and real-time analysis of tail gas components, and all-directional safety protection in the combustion process is realized through a multi-parameter cooperative monitoring and intelligent interlocking mechanism; the detonation risk is obviously reduced; meanwhile, the air-fuel ratio fluctuation is accurately controlled within the range of + / -5%, and the carbon deposition phenomenon is effectively reduced; and remarkable economic benefits are created while reliable operation of equipment is guaranteed.

The invention provides a method and a system for accurately regulating and controlling waste gas denitration air quantity of a glass melting furnace. According to the method, an ultrasonic Doppler sensor group is arranged around a glass melting furnace flue, ultrasonic beams are synchronously emitted to collect flow velocity pulsation data required by exhaust gas denitration air volume, time sequence waveforms are decomposed to generate multi-dimensional frequency characteristics, and the multi-dimensional frequency characteristics are aggregated into a multi-dimensional flow velocity vector representing a flow field state; vector deviation is synchronously corrected through space coordinate alignment and a time sequence, and difference variable quantity is extracted and fused to generate a flow field thermodynamic diagram; establishing a time-space correlation model of the multi-dimensional flow velocity vector and the thermodynamic diagram, predicting an air volume adjusting threshold value meeting the denitration requirement, and converting the air volume adjusting threshold value into a fan rotating speed control signal to drive an execution mechanism; and according to waste gas pulsation response data caused by fan rotating speed change and thermodynamic diagram updating frequency relevance, multi-dimensional flow velocity vectors are dynamically adjusted to form closed-loop regulation and control. According to the application, the dynamic demand of the denitration air volume and the millisecond-level closed-loop response executed by the fan are realized, the flue gas purification efficiency is improved, and the energy consumption is reduced.

The invention discloses a steel plant high-temperature flue gas waste heat recovery system and method, and relates to the technical field of waste heat recovery, the steel plant high-temperature flue gas waste heat recovery system comprises a spiral conveyor, a flue gas pipeline and a waste heat recovery furnace, a main flue on process equipment in a steel plant is connected into a flue gas inlet of the waste heat recovery furnace through the flue gas pipeline, and a plurality of snakelike heating pipes are evenly distributed in the waste heat recovery furnace; one end of the snakelike heating pipe is connected with a water inlet pipe, the other end of the snakelike heating pipe is connected with a water outlet pipe, a plurality of ash discharge hoppers are arranged at the bottom of the waste heat recovery furnace, spiral conveyors are arranged at the bottoms of the ash discharge hoppers, a cleaning mechanism is arranged in the waste heat recovery furnace, and a smoke outlet of the waste heat recovery furnace is connected to next process equipment through a smoke exhaust pipeline. According to the system, the surfaces of the two sides of the S-shaped heating pipe can be cleaned, meanwhile, the knocking head of the knocking assembly can knock the inner wall of the waste heat recovery furnace, soot attached to the inner wall falls into the ash discharging hopper, automatic and comprehensive cleaning of heat exchange equipment is achieved, and the cleanliness of the surfaces of the heat exchange equipment is guaranteed.

The utility model relates to a three-way flue and a flue gas treatment system equipped with the three-way flue, the three-way flue comprises a flue gas inlet section and two flue gas outlet sections, the two flue gas outlet sections are both provided with gate valves, the two groups of gate valves share one group of gate plate assembly, the gate plate assembly comprises a blind plate and a pore plate, the hole plate is a flashboard with a through hole, the blind plate is selectively inserted into one valve seat, and the hole plate is inserted into the other valve seat; and the three-way flue is provided with a blind plate switching execution mechanism for switching the blind plate and the pore plate. In the utility model, the two groups of gate valves share one group of gate component, and smoke can only be discharged from one smoke outlet section instead of being discharged from the two smoke outlet sections at the same time, so that the operation reliability is ensured, and the condition of misoperation is avoided; and the blind plate and the pore plate are adopted for switching, so that the sealing performance of the two groups of gate valves can be ensured.

The invention relates to a power station boiler self-adaptive load combined preheating recovery system which comprises a preheating system, a monitoring module and a regulation and control module, and the preheating system comprises a heat pipe heat exchanger set and a heat pump system; the heat pipe heat exchanger set is used for recycling high-grade flue gas waste heat in a combustion system in a power station boiler to preheat water in a water supply pipeline. The heat pump system is used for recycling low-grade flue gas waste heat of a second flue in the power station boiler to preheat ambient air at the inlet end of the air conveying fan; the monitoring module is used for collecting flue gas data of a first flue and a second flue in the power station boiler and a current load mode of the power station boiler; and the regulation and control module is used for dynamically regulating operation parameters of the heat pipe heat exchanger group and / or the heat pump system based on the flue gas data of the power station boiler and the current load mode, so that the regulated heat pipe heat exchanger group and the regulated heat pump system are used for recovering flue gas waste heat for preheating. Waste heat efficient recovery and stable operation of the boiler within the range from full load to deep adjustment load are achieved.