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995results about "Vertical furnaces" patented technology

Communication control system and method for shaft furnace feeding device

The invention relates to the technical field of communication control, in particular to a communication control system and method for a shaft furnace feeding device, and the system comprises a feeding end which is composed of a raw material characteristic sensing layer, a feeding state sensing layer and a control response layer, the feeding state sensing layer is used for collecting data of the feeding state, the raw material characteristic sensing layer and the feeding state sensing layer both support multi-mode data collection, and the control response layer supports high-frequency control instruction response and controls the feeding state of raw materials; the system can actively adjust a feeding strategy under a dynamic working condition, reduce raw material waste and energy consumption and improve product quality; the self-learning capability continuously optimizes the control effect along with the prolonging of the operation time, a forward feedback cycle is formed, and the production efficiency and the equipment utilization rate are greatly improved.
Owner:CHANGZHOU TONGTAI HIGH CONDUCTIVITY NEW MATERIALS CO LTD

Vertical electric heating roasting furnace device for pretreatment of metallurgical chemical solid waste and use method of vertical electric heating roasting furnace device

The invention provides a metallurgical chemical solid waste pretreatment vertical electric heating roasting furnace device and a using method thereof.The furnace body is of a hollow cylindrical vertical structure, a barrel is divided into a solid reduction area, an oxidation reduction area and a furnace charge preheating area, the barrel of the solid reduction area and the barrel of the oxidation reduction area are surrounded by flat rectangular red copper pipes, and an auxiliary induction bar is arranged in the center of the barrel; and the feeding and discharging device is connected to the PLC automatic control module. The power supply control and heat supply device is connected with the red copper pipe through a silicon controlled rectifier medium-frequency power supply, and an air supply and exhaust device, a temperature control device and a sealing device are additionally arranged. Fossil fuel is replaced by electric heating, carbon emission is reduced, environmental protection is achieved, temperature control is accurate, heat efficiency is high, and energy consumption and cost can be saved. One set of equipment is suitable for different solid waste raw materials, pretreated products are obtained through different roasting methods, the equipment is simple, investment is saved, the technological process is short, applicability is high, heating is even through the structural design, sealing is good, continuous production can be achieved, and heat efficiency and production efficiency are improved.
Owner:LONGYAN SHANQING METALLURGICAL TECH CO LTD

Artificial graphite and preparation method thereof, negative pole piece, battery and electric equipment

The invention discloses artificial graphite and a preparation method thereof, a negative pole piece, a battery and electric equipment. The preparation method comprises the steps that raw materials are put into a graphitization furnace, the raw materials comprise carbon particles, the particle size of the carbon particles ranges from 1 cm to 8 cm, and the graphitization furnace works in the inert gas atmosphere; the raw materials are controlled to enter a preheating zone of the graphitization furnace, so that the raw materials are preheated, and the temperature of the preheating zone is 800-1500 DEG C; feeding the preheated material into a graphitization area of a graphitization furnace so as to carry out graphitization treatment on the preheated material; and feeding the graphitized material into a cooling area of the graphitization furnace so as to cool the graphitized material. In the implementation mode, the graphitization process is continuous, the procedures do not need to be stopped and switched, all the procedures are carried out in the same graphitization furnace, the production period is shortened, and the productivity can be improved.
Owner:CONTEMPORARY AMPEREX TECHNOLOGY CO LTD

Energy-saving monitoring system for recycling waste heat of shaft furnace

The invention relates to the technical field of waste heat utilization, in particular to an energy-saving monitoring system for waste heat recycling of a shaft furnace, which comprises a waste heat network building module for acquiring waste heat information of the shaft furnace and pipeline information and building a waste heat circulating network; the region segmentation module is used for carrying out region segmentation according to the waste heat circulation network, carrying out thermal distribution analysis on the circulation volume, the heating area and the heating point of each region on the waste heat circulation network, and obtaining thermal distribution characteristics and thermal field change values; the thermal field analysis module is used for carrying out demand analysis on each node of the waste heat circulation network, identifying the thermal disturbance quantity of each node relative to an adjacent heating point by utilizing the thermal distribution characteristics and the thermal field change value, and determining the shortest connection path of the waste heat circulation network under the thermal disturbance quantity; the node feedback module is used for performing node feedback on each node of the waste heat circulation network and determining a node feedback mode of each node; and the waste heat utilization efficiency and safety are improved.
Owner:INNER MONGOLIA HUAMING NEW MATERIALS CO LTD

External heating shaft furnace reaction system and method for direct hydrogen reduction of vanadium-titanium-iron concentrate

The invention discloses an external heating shaft furnace reaction system and method for direct hydrogen reduction of vanadium-titanium-iron concentrate, and belongs to the technical field of ferrous metallurgy. The system comprises a heating shaft furnace assembly, a feeding system, a furnace gas circulation and gas inlet system, a heating and heat transfer system, a cooling and discharging system and the like. A feeding system and a gas outlet are arranged at the top end of the preheating section; a heating and heat transfer system is arranged on the reaction section; the heating and heat transfer system comprises an induction heating heat transfer body, an induction heating coil and an insulation heat preservation material; an annular air inlet cavity is formed in the cooling section close to the reaction section; the furnace gas circulation and gas inlet system comprises a gas phase reforming reactor, a bag-type dust collector, a gas storage tank and a dry hydrogen source, a gas outlet of the preheating section is connected with the gas phase reforming reactor, and an outlet of the gas storage tank and an outlet of the dry hydrogen source are both connected with the annular gas inlet cavity. According to the system, carbon is supplemented in the reduction process, the annual output is 100 thousand t or above, the hydrogen utilization rate is not lower than 84%, and the Fe element metallization rate can reach 90% or above.
Owner:SICHUAN LOMON MINING & METALLURGY +1

Vertical furnace

The present disclosure provides a vertical furnace. The vertical furnace comprises a furnace tube, a storage device, a loading device, a wafer boat, a first carrying device, a second carrying device and a gas system. A furnace chamber used for heating a wafer is arranged in the furnace tube. The storage device is provided with a storage chamber and a carrying table located in the storage chamber, and the carrying table is used for carrying a wafer box. The loading device is used for loading a wafer box for storing a wafer to be heated. The wafer boat is used for moving a wafer to be heated between the furnace chamber and the loading device. The first carrying device is used for moving the wafer box between the carrying table and the loading device. And the second carrying device is used for moving the to-be-heated wafer between the loading device and the wafer boat. And the gas system comprises a gas inlet port and a gas outlet port which are arranged on the carrying table, and is used for introducing protective gas into the wafer box through the gas inlet port and discharging the gas from the wafer box through the gas outlet port so as to inject the protective gas of which the pressure is greater than the environmental pressure into the wafer box. Consequently, pollutants in the environment can be prevented from making contact with the wafer, and the interior of the wafer box is clean.
Owner:BEIJING HEQI PRECISION TECH LTD

Blast furnace operation method

A blast furnace operation method according to one aspect of the present disclosure comprises: a parameter estimation step for estimating blast parameters and a pulverized coal ratio in a second operation, such that the amount molten iron produced, the molten iron temperature, and the furnace top gas temperature in the second operation match those in a reference operation; a change information acquisition step for acquiring information on a temporal change in one or both of the molten iron temperature and the amount of molten iron produced when performing the second operation based on the blast parameters and the pulverized coal ratio estimated in the parameter estimation step with a delay of a predetermined time after switching from the reference operation to the first operation; a repeating step for performing the change information acquisition step a plurality of times while changing the predetermined time; and an optimum delay time acquisition step for determining, as an optimum delay time, a predetermined time such that the temporal change in the molten iron temperature or the amount of molten iron produced is the smallest, on the basis of the information acquired in the repeating step. After switching from the reference operation to the first operation, the second operation based on the blast parameters and the pulverized coal ratio estimated in the parameter estimation step is started with a delay of the optimum delay time.
Owner:NIPPON STEEL CORPORATION

Systems, methods and devices for cement manufacture

High temperature furnaces, calcining, pyrolysis and other high temperature manufacturing processes, composition rearrangements, and equipment. Systems, equipment and processes using oxyfuel combustion using gaseous fuels for cement manufacture. Reactor furnaces using oxyfuel containing natural gas and gravity feed to process pellets forming a pellet bed into cement.
Owner:FURNO MATERIALS INC

Process for reducing fossil co2 emissions

A process for operating an oxidizable combustion gas cleaning unit in a metallurgical plant, including the steps of: (a) passing an oxidizable combustion gas from a metallurgical reactor, in particular a blast furnace gas from a blast furnace, in a packed bed scrubber arrangement through a packed bed in countercurrent with a washing water or in a spray scrubber arrangement to remove cyanide compounds, in particular hydrogen cyanide, and to increase the removal of chloride compounds, in particular hydrogen chloride, from the combustion gas by solubilizing the cyanide and chloride compounds in the washing water, (b) collecting the washing water containing solubilized cyanide and chloride compounds at a bottom end of the packed bed or spray scrubber arrangement, and (c) collecting a cleaned oxidizable combustion gas at a top of the packed bed or spray scrubber arrangement, wherein a base is added to the washing water before step (a).
Owner:PAUL WURTH SA

Split type pure hydrogen high-temperature electric heating device of hydrogen-based shaft furnace

The invention relates to a design scheme suitable for hydrogen electric heating equipment of a hydrogen-based shaft furnace, belongs to the technical field of hydrogen metallurgy for directly reducing the hydrogen-based shaft furnace, and aims to solve the problems that the aging of a heating rod is influenced and the service life of a heating furnace is influenced due to reduction reaction between hydrogen and the heating rod at high temperature. The pure hydrogen high-temperature electric heating adopts a split type structural design, and a heating rod distribution cavity and a hydrogen heating cavity are isolated from each other, so that the surface of a silicon-molybdenum heating rod is prevented from being subjected to a reduction reaction with high-temperature hydrogen and water vapor; the heating rod distribution cavity is filled with nitrogen, the pressure of the heating rod distribution cavity is larger than that of the hydrogen heating cavity, hydrogen leakage of the hydrogen heating cavity is prevented, and the safety of the whole heating furnace is improved. The heating furnace adopts a three-section structural design, maintenance personnel can conveniently maintain the internal structure of the heating furnace and replace parts, and the service life and the safety performance of the pure hydrogen heating furnace are improved through the design mode of the heating furnace.
Owner:TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY

A slag barrier plate for a side-blown melting furnace with a molten bath

A slag barrier plate for a side-blown melting furnace with a melting bath, characterized in that it comprises: a slag barrier unit (1) with a plate body (11) for holding back molten slag; a heat dissipation unit (2) comprising: a cooling water jacket (21) extending through the interior of the plate body (11) to continuously introduce cooling medium into the plate body (11) to lower its temperature; a distributor arrangement (22) arranged at the end of the cooling water jacket (21) to introduce the cooling medium into the cooling water jacket (21).
Owner:YUNNAN COPPER CO LTD

Vertical heat treatment equipment and conveying device thereof

The invention provides vertical heat treatment equipment and a conveying device thereof, the conveying device comprises a device main body, a transmission belt mechanism and a stop mechanism, the transmission belt mechanism is used for transmission between a driving part and a driven part of the device main body, and the transmission belt mechanism comprises a transmission belt; the stop mechanism comprises a stop part and a matching assembly, the stop part is fixedly connected with the driven piece, and the stop part is provided with a stop structure; the matching assembly comprises a retainer and enables the retainer to be far away from the retaining structure under the support of the transmission belt, and when the transmission belt is broken, the retainer is matched with the retaining structure to stop rotation of the driven part. In the stopping process of the conveying device, a detection device does not need to detect signals, and stopping can be achieved without signal control, so that the reliability of the stopping process is improved, and the cost of the conveying device is reduced.
Owner:BEIJING NAURA MICROELECTRONICS EQUIP CO LTD

Expanded perlite expansion furnace

An expansion furnace for expanded perlite effectively solves the problems of high energy consumption, insufficient primary expansion, and inconvenience in later processing in the current production of perlite. It includes a primary expansion furnace and a secondary expansion furnace, which are fixedly connected to each other; the primary expansion furnace includes a hollow first furnace body, a plurality of first flame spray nozzles are fixedly connected to the lower end of the first furnace body, and the plurality of first flame spray nozzles heat the first furnace body; a bellows is arranged below the first furnace body, and the wind in the bellows is communicated with the first flame spray nozzles through a pipeline; the secondary expansion furnace includes a hollow inner furnace body, which is connected to the first furnace body, a hollow refractory tube is arranged outside the inner furnace body, and there is a gap between the refractory tube and the inner furnace body, and a plurality of second flame spray nozzles are fixed to the upper and middle parts of the refractory tube, and the plurality of second flame spray nozzles heat the inner furnace body.
Owner:XINYANG BAOZI ENVIRONMENTAL PROTECTION EQUIP

Vertical furnace tube equipment and temperature control method thereof

The invention provides vertical furnace tube equipment and a temperature control method thereof. The vertical furnace tube equipment comprises a furnace body; the wafer boat bears multiple layers of wafers in the height direction, and the multiple layers of wafers are divided into N height areas; the plurality of gas injection pipes are used for injecting gas into each height area; the plurality of regulating valves are used for regulating the gas flow of the corresponding gas injection pipes; the plurality of temperature detection devices are used for detecting the actual temperature of the wafer in each height area; the plurality of heaters are consistent in structure, are in one-to-one correspondence with the N height areas, and are used for heating the wafer in each height area; and the temperature control device is used for controlling the regulating valve and the heater in the corresponding height area according to the deviation between the actual temperature of the wafer and the preset temperature. The temperature of wafers in different height areas can be detected and controlled in real time, and the temperature deviation between the wafers in the same furnace is reduced, so that the temperature uniformity of the wafers in different heights is improved.
Owner:HENAN ORIENTALMATERIALS CO LTD

Pure hydrogen electric heating design scheme matched with hydrogen-based shaft furnace

The invention relates to a design scheme suitable for an electric heating device matched with a hydrogen-based shaft furnace for reducing iron ore, belongs to the technical field of hydrogen metallurgy for directly reducing a hydrogen-based shaft furnace, and aims to solve the problem that the service life of a heating furnace is influenced by aging of a heating rod due to high-temperature reaction between hydrogen and the heating rod. The hydrogen electric heating furnace adopts a separated structure design, hydrogen flows in a nickel-based alloy heating pipeline, and a silicon carbide rod is arranged in a heating furnace cavity, so that the surface of the heating rod is prevented from reacting with high-temperature hydrogen and water vapor; the heating furnace tube adopts a snake-shaped structure, so that the heat exchange area is increased, the deformation of the high-temperature furnace tube is compensated, and the stability of the whole heating furnace is improved; the heating furnace adopts multi-zone temperature control, and heating elements are uniformly distributed in the furnace, so that the temperature in the heating furnace is uniform, and the precision temperature control of + / -5 DEG C of the hydrogen outlet temperature is realized; the heating furnace cavity is protected by nitrogen, inlet hydrogen supply is cut off in time when hydrogen leaks, a safety linkage nitrogen valve is used for purging, and the overall safety of the heating furnace is improved. Through the design mode of the heating furnace, the durability and the safety of the pure hydrogen electric heating equipment are improved.
Owner:Xinjiang Intelligent Equipment Research Institute +2

Electric heating shaft furnace for oxidized pellet production based on hot air internal circulation and pellet production method

The invention discloses an electric heating shaft furnace for oxidized pellet production based on hot air internal circulation and a pellet production method. The electric heating shaft furnace comprises a furnace shell and a hearth. The interior of the hearth is divided into a drying section, a preheating section, an electric heating roasting section, a first cooling section, a second cooling section and a third cooling section from top to bottom, and a material inlet and a material outlet are respectively formed in the top and the bottom of the hearth. And a microwave generating device is arranged on the side wall of the furnace body at the electric heating roasting section. By means of the microwave pure electric heating coupling cascade hot air internal circulation heat compensation mode, low-temperature (not exceeding 1200 DEG C) uniform heating oxidation of pellets and green production with zero carbon emission, low smoke amount and low pollution are achieved, and the method has the advantages of being simple in process, easy to operate, remarkable in energy conservation and emission reduction effect and capable of achieving large-scale industrial practical application.
Owner:ZHONGYE-CHANGTIAN INT ENG CO LTD

Device and method for the production of silicon carbide

Disclosed is an apparatus for the production of silicon carbide which comprises a heatable reactor (1) which has a feed opening (4) on its upper side for continuous feeding with a precursor (7), an outlet opening (5) on its lower side for the continuous exit of silicon carbide (10) formed in the reactor (1) from the precursor, and an internal space (3) between the feed opening (4) and the outlet opening (5), wherein the feed opening, outlet opening and internal space are arranged such that the precursor and silicon carbide can pass through the internal space (3) falling from the feed opening (4) to the outlet opening (5).
Owner:THE YELLOW SIC HLDG GMBH

Large-scale top-loading dynamic calcining kiln

The invention belongs to the technical field of kilns, and particularly relates to a large-scale top-loading dynamic calcining kiln which comprises a kiln body, the kiln body is of a vertical structure, a calcining area is arranged in the kiln body, a pusher is arranged at the bottom of the kiln body, and the large-scale top-loading dynamic calcining kiln is characterized in that a feeding port is formed in the top of the kiln body, the upper portion of the feeding port is communicated with a storage bin, and an electric valve is arranged on the feeding port; a material flow divider is arranged below the feeding hole, and a preheating dehydration area, a calcining area and a cooling area are sequentially arranged below the flow divider; a plurality of groups of internal heating type combustion units are arranged in the calcining area side by side, two or more layers of combustion chambers are arranged in each internal heating type combustion unit, a horizontal duplex flame path is arranged below each combustion chamber, a smoke chamber is arranged above each horizontal flame path, and a smoke hole array with an outlet facing downwards at an included angle of 25 degrees is formed in the side wall of each smoke chamber; the top of the internal heating type combustion unit is provided with a full-length sharp ridge, and the included angle of the top of the sharp ridge is 60 degrees. The method has the advantages that the problem of calcination of light magnesium oxide products with different granularities in the magnesite is solved, and the large-scale production target of annual output of 100,000 tons is met.
Owner:LIAONING PUWANG MAGNESIUM TECHNOLOGY CO LTD

Vertical-retort reduction furnace for producing metal magnesium and method for producing metal magnesium

The present invention relates to a vertical-retort reduction furnace for producing metal magnesium, comprising: a furnace body defining a furnace chamber (2), and vertical retorts (6) arranged in the furnace chamber (2), wherein the vertical retorts (6) each comprise a hollow straight cylindrical retort body (6-3); the retort body (6-3) defines, in an upper portion, a first crystallizer chamber (6-7) for receiving a crystallizer (7), and defines a second chamber (6-8) located below the first crystallizer chamber (6-7); the vertical retorts (6) each are provided with a top opening (6-10) and a bottom opening (6-6); the diameter of the bottom opening (6-6) is equal to the diameter of the second chamber (6-8). The vertical-retort reduction furnace further comprises bin assemblies (10), wherein the bin assemblies (10) each comprise an upper bin (10-1) allowing for filling of a pellet material (8) and a lower bin (10-4) for slidably receiving the upper bin (10-1). The present invention also relates to a method for producing metal magnesium by using the vertical-retort reduction furnace.
Owner:CHINA ALUMINUM INT ENG CORP +1

Line and method for producing a metal product with heat treatment and stripping

PCT designated stageWO2025169113A2Material accumulating devicesVertical furnacesProduction lineErbium lasers
The invention relates to a production line configured to convey the metal product along a conveying path, which production line comprises, along the conveying path, an induction heat treatment furnace configured to heat the metal product by induction while the metal product is being conveyed, and a laser stripping unit configured to strip, using at least one laser, at least one surface of the metal product while the metal product is being conveyed.
Owner:APERAM

Blast furnace gas pressure swing adsorption carbon dioxide capture coupling compression energy storage system

The invention discloses a blast furnace gas pressure swing adsorption carbon dioxide capture coupling compression energy storage system, and belongs to the technical field of adsorption and energy storage. According to the blast furnace gas pressure swing adsorption carbon dioxide capture coupling compression energy storage system, through energy integration, pressure energy and heat energy of blast furnace gas are utilized, and cooperation of CO2 capture and compression energy storage is achieved. Through heat recovery and pressure energy utilization, the overall efficiency of the system is remarkably improved, and the cost is reduced. In addition, the system can flexibly adjust the CO2 capture and energy storage process according to the power grid demand, and the flexibility of the system is improved. The innovative coupling system provided by the invention not only can effectively solve the problem of CO2 emission reduction in the iron and steel industry, but also can provide support for large-scale application of renewable energy sources, and has important theoretical significance and practical application value.
Owner:INSTITUTE OF PROCESS ENGINEERING CHINESE ACADEMY OF SCIENCES +1

Energy efficiency control method and system for shaft furnace combustion

ActiveCN119826524AVertical furnacesEarly warning systemCombustion noise
The invention relates to the technical field of shaft furnace combustion control, in particular to a shaft furnace combustion energy efficiency control method and system.The method comprises the steps that combustion voiceprint features are extracted by obtaining combustion noise of a shaft furnace cavity, the combustion state is recognized, a graded early warning system is arranged according to the combustion state, and a combustion early warning result is obtained; according to the invention, a combustion early warning result is established, a fuel flow value is dynamically adjusted according to the combustion early warning result, and the combustion early warning result is dynamically adjusted by establishing a self-adaptive waste heat adjusting center, so that waste heat distribution is carried out, and the problems that the fine change of the combustion state is difficult to capture in time and abnormal combustion early signals are easy to miss in a traditional monitoring mode are effectively solved; the combustion noise is collected, the combustion voiceprint features are extracted, the combustion state is dynamically monitored, accurate recognition is achieved, the energy efficiency of the combustion process is remarkably improved through the grading early warning system and dynamic adjustment of the fuel flow, and energy waste and equipment faults caused by combustion abnormity are reduced.
Owner:CHANGZHOU TONGTAI HIGH CONDUCTIVITY NEW MATERIALS CO LTD

Injector configured for arrangement within a reactor of a vertical furnace and vertical furnace

An injector configured for arrangement within a reactor of a vertical furnace to inject gas in the reactor is provided. The injector is made substantial elongated and configured with an internal gas conduction channel to transport gas from a first end of the injector to a second end of the injector. An outer sidewall of the injector may be tapered towards the second end over at least 10%, preferably 30% and most preferably 50% of the length of the injector to increase tolerances for fitting the injector in the tube.
Owner:ASM IP HLDG BV

Direct bath smelting process for managing peripheral cold zone at metal-slag interface

An improved direct smelting vessel includes a smelting reduction vessel (SRV) and optionally a cyclone converter (CCF). The SRV provides means for promoting metal mixing in an area beneath a slag layer adjacent a vessel wall of the direct smelting vessel. The device for promoting metal mixing may include a layered refractory hearth having two refractory base plate layers, a refractory hearth having one or more gas bubbling devices, and / or at least one pair of solids injection guns (or other devices) that provide alternating solids injection at any given time. The device for promoting metal mixing reduces the stagnation zone capable of supporting a semi-solid slag layer that limits metal-slag heat transfer. The means for promoting metal mixing maintain an effective temperature difference between the metal flowing out of the forehearth and the metal at the vessel wall not greater than 40 DEG C.
Owner:NUCOR CORP

Alternative fuel vertical pre-combustion furnace

An alternative fuel vertical pre-combustion furnace comprises a vertical combustion chamber furnace body, a multi-stage stepped furnace hearth arranged on the side wall of the pre-combustion furnace body and a pneumatic pulse injection device arranged on the furnace hearth, and castable is arranged on the inner wall of the whole furnace body. Light flammable substances are completely incinerated under the driving of high-speed airflow, heavier flame-retardant substances fall into the next step to be continuously incinerated, the burn-off rate of the alternative fuel is greatly improved after the alternative fuel stays, is scattered and is pre-combusted, and completely-combusted material residues are dispersed by strong injection of compressed air of an air cannon system; therefore, the influence on the cement kiln caused by sedimentation of the material slag agglomerated in the decomposing furnace is solved. And materials on the uppermost combustion platform sequentially slide to the second-stage combustion step platform and then slide to the next-stage combustion platform layer by layer, and the process is repeated. And waste gas and ash after incineration are discharged from the bottom of the pre-combustion furnace and enter a kiln tail decomposing furnace system, when the material slag is harmful to the kiln system, the material slag can be discharged, and high-temperature airflow enters the decomposing furnace.
Owner:LUOYANG SHENTE ENG TECH CO LTD

Well type resistance furnace with hot air circulation function

The utility model discloses a pit type resistance furnace with a hot air circulation function, which relates to the technical field of heating equipment and comprises a furnace body and a furnace cover, a heating cavity is arranged in the furnace body, a ventilating duct is mounted in the heating cavity, a connecting disc is fixedly connected to the top of the ventilating duct, and a fan is arranged in the furnace cover. The top of the connecting disc is arranged at an air outlet in the edge of the bottom of the fan, a heat insulation material is jointly arranged between the inner side wall of the furnace body and the heating cavity, and heating devices are evenly installed on the inner side wall of the ventilation pipeline. According to the utility model, the heating devices are uniformly arranged on the inner side wall of the ventilation pipeline, and the spiral pipeline and the fan are arranged, so that each part of a heated object can be uniformly heated, the heating quality is improved, and the ceramic fiber heat insulation material is arranged between the inner side wall of the furnace body and the heating cavity, so that the loss of heat to the external environment is effectively reduced; the energy utilization efficiency is improved, the hot air circulation path is optimized through the arrangement of the spiral pipeline, and uniform regulation and control over the temperature in the furnace are better achieved.
Owner:BAOJI XINLAN TENG FURNACE CO LTD

Furnace-based thermal-shock systems and methods

An assembly for use with a furnace can include a conveyance member, a substrate, and a heating support material. The substrate can have one or more precursors deposited thereon. The conveyance member can be constructed such that at least a portion thereof can be moved between a first and second positions with respect to the furnace. The heating support material can be between the conveyance member and the substrate. The heating support material can support the substrate on the conveyance member. The assembly can be subjected to a thermal shock via the furnace. The thermal shock can be at a temperature of at least 1000 K for a duration of 60 seconds or less. The substrate can be supported on the heating support material and the first portion of the conveyance member during the thermal shock.
Owner:UNIV OF MARYLAND +2

Sensor data anomaly detection method based on multi-dimensional fusion of hydrogen-based shaft furnace

The invention discloses a multi-dimensional fusion sensor data anomaly detection method based on a hydrogen-based shaft furnace, and belongs to the technical field of metallurgical equipment monitoring. The method comprises the steps of data preprocessing, single-variable anomaly detection, multivariable consistency detection, anomaly type judgment and alarm output. The single variable detection adopts a rolling median absolute deviation method, drift detection, continuous tiny variable threshold and border crossing detection; the multivariate detection calculates reconstruction residuals of each sensor through principal component analysis (PCA) and identifies overall consistency anomalies. And the system judges the fault type according to the comprehensive score of the multiple detection results and outputs a detailed alarm record and a statistical report. According to the method, multi-algorithm fusion analysis is carried out on time sequence data collected by a plurality of sensors in the operation process of the shaft furnace, so that the abnormal states of the sensors are accurately recognized. The method can be widely applied to real-time monitoring of the hydrogen-based shaft furnace smelting process, the accuracy and robustness of anomaly detection are improved, and false alarms and missing alarms are reduced.
Owner:XINJIANG UNIVERSITY

Low-nitrogen combustion decomposing furnace and lime calcining system

The invention provides a low-nitrogen combustion decomposing furnace and a lime calcining system, and belongs to the technical field of limestone calcining, specifically, the low-nitrogen combustion decomposing furnace comprises a decomposing furnace body used for calcining and decomposing limestone, and a furnace chamber of the decomposing furnace body is divided into a material collecting area, a hot carbon reduction area and a combustion decomposing area; materials, combustion-supporting gas and fuel enter the decomposing furnace body in two ways, and the proportion of the materials, the combustion-supporting gas and the fuel entering the decomposing furnace body in the two ways is controlled, so that a hot carbon reduction area and a combustion decomposing area are formed in a furnace cavity of the decomposing furnace body. For example, the proportion of combustion-supporting gas in the combustion decomposition area is more, so that materials can be fully combusted, while the proportion of the combustion-supporting gas in the hot carbon reduction area can be reduced, so that insufficient combustion is carried out in the area, and meanwhile, suppression and reduction are carried out through fuel, so that nitrogen oxide passing through the area is subjected to reduction reaction to become carbon dioxide and nitrogen to be discharged; the content of nitrogen oxide is greatly reduced, and the nitrogen oxide treatment procedure of the subsequent exhaust process is reduced.
Owner:TIANJIN CHAOYANG ENVIRONMENTAL PROTECTION TECH GRP CO LTD

Hydraulic monitoring control system suitable for environment-friendly lime shaft kiln

The invention belongs to the technical field of lime shaft kiln management and control, and particularly relates to a hydraulic monitoring control system suitable for an environment-friendly lime shaft kiln, which comprises a hydraulic loading control unit, a power source monitoring unit, a hydraulic cylinder motion monitoring unit, a real-time alarm unit and a remote control supervision end, a hydraulic pump station is used as a power source through the hydraulic loading control unit, and a hydraulic cylinder is accurately controlled by combining control elements such as a three-position four-way electromagnetic directional valve, an overflow valve, a one-way valve and a proportional pressure reducing valve; a power source monitoring unit, a hydraulic cylinder movement monitoring unit and a control element evaluation unit are used for effectively monitoring a power source, a hydraulic cylinder piston rod and a control element and performing abnormal early warning so as to remind a manager to take targeted improvement treatment measures in time, so that the supervision difficulty of the manager is remarkably reduced; hydraulic monitoring and control of the lime shaft kiln are achieved, and the intelligent degree is high.
Owner:HANGZHOU HANGGANG SANJIANG MINING CO LTD