402results about "Vertical furnaces" patented technology

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.

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.

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.

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.

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.

The invention relates to the development made in the vertical kiln subject to the application numbered 2021 / 012627, which is designed to be used in calcination and / or drying processes in industrial plants operating in the mining sector.

The application provides a heat comprehensive utilization system based on a lime kiln and a combustion beam, belongs to the technical field of calcining equipment, and comprises a beam body, a cooling oil circulation pipeline, a steam pipeline and a combustion air pipeline; the cooling oil circulation pipeline is in communication with an oil cooling cavity. A fan is arranged on the combustion air pipeline, the fan can make gas flow to form an air flow; the steam pipeline is in communication with a gas cooling cavity, a steam valve is arranged between the steam pipeline and the gas cooling cavity, the steam pipeline further has a tempering branch in communication with a hollow cavity, and a tempering valve is arranged on the tempering branch; the combustion air pipeline is in communication with the gas cooling cavity; a combustion valve is arranged between the combustion air pipeline and the gas cooling cavity, the combustion air pipeline further has a combustion branch in communication with the hollow cavity, and an air inlet valve is arranged on the combustion branch. The heat comprehensive utilization system based on the lime kiln and the combustion beam provided by the application realizes energy saving to the maximum by means of liquid and gas collaborative cooling.

The application discloses a multi-channel shaft kiln for calcining magnesite, wherein a distributing vehicle and a discharging device are located at the top and bottom of a kiln body. The kiln body is provided with a preheating section, a calcining section and a roasting section from top to bottom, and square strip-shaped channels are arranged in the kiln. A combustion chamber is arranged in the furnace wall on both sides of the calcining section with a width of 40-80 cm, the combustion chamber is built by hollow integral combustion bricks, the combustion chamber is communicated with the calcining section by cross-distributed through holes, the through hole outlet is downwardly inclined, and an inclined convex block is arranged at the top. The lower part of the roasting section is provided with an upper collecting opening and a lower expanding opening structure, an air pressure pipe is arranged in the inclined brick of the upper collecting opening, the opening of the air pressure pipe is downwardly inclined and communicated with the roasting section, and the lower expanding opening is matched with the upper semicircular surface of the discharging device. The middle part of the upwardly inclined distributing main pipe of the distributing vehicle is communicated with the branch pipe which is inclined and changed in direction, and a change valve is arranged in the main branch pipe. The application provides a comprehensive solution of the shaft kiln with high calcining quality, energy saving, low investment and long service life for calcining magnesite, and can also be used for high-quality calcining of small-particle materials.

The invention discloses a material conveying device which comprises a buffering stock bin, a material conveying device, a material conveying device, a material conveying device and a material conveying device, and the buffering stock bin is used for containing materials and provided with a discharging opening for discharging the materials; the gate is movably arranged at the discharge port; and the control piece is electrically connected with the gate so as to control the gate to close the discharge port when the preset amount of materials are discharged from the discharge port. The buffer stock bin and the gate are arranged, the action of the gate is controlled through the control piece, and the gate is controlled to close the discharge port when the discharge port discharges the preset amount of materials, so that the material amount is controlled, excessive fluctuation of the smoke amount is avoided, and furnace condition control and field environmental protection are facilitated.

Provided in the present disclosure is a semiconductor process apparatus, wherein a process chamber and a loading chamber are in communication with each other, and a process door can seal off and isolate the process chamber from the loading chamber, a bearing device being provided on the process door; within gas delivery piping, a first gas intake pipe, a second gas intake pipe, and a third gas intake pipe can all be in communication with an atmosphere gas source, a first gas exhaust pipe and a second gas exhaust pipe can both be in communication with a negative pressure mechanism, the first gas intake pipe and the first gas exhaust pipe are both in communication with the process chamber, the second gas intake pipe and the second gas exhaust pipe are both in communication with the loading chamber, and a second end of the third gas intake pipe can be connected to or disconnected from the first gas exhaust pipe. During opening of the process door of the semiconductor process apparatus, the amount of impurities carried into the process chamber by gas is relatively small, and the degree to which impurities adhering to a chamber wall of the process chamber are blown off is relatively low.

Provision of a gas production apparatus that can stably produce a product gas with carbon monoxide as its main component from a separated gas including carbon dioxide as a main component. The gas production apparatus 1 consists of the following: a separation and capture section 5, which separates and captures separated gas containing mainly of carbon dioxide from the exhaust gas taken from the line of the exhaust gas equipment; a reaction section 4 including at least a reactor, which is connected to downstream of the separation and capture section 5, contains a reducing agent that generates carbon monoxide through a reduction reaction of carbon dioxide brought into contact with the separated gas, and is capable of separating at least some of oxygen atoms separated from carbon dioxide; a pressure regulating section 7 connected to downstream of the reactor 4 to regulate the pressure of the separated gas supplied to the reactor; and the flow regulating section 6 connected on the upstream of the separation and capture section 5 and regulates the flow rate of the separated gas supplied to the reactor.

The utility model discloses a vertical carbonization furnace, and relates to the field of activated carbon activation furnaces, the inside of a carbonization section is built by a plurality of connecting blocks, concave bricks and convex bricks, specifically, the middle part of each connecting block is provided with an inclined plane support, and the left and right sides of each connecting block are respectively provided with the convex bricks and the concave bricks; the connecting blocks, the concave brick blocks and the convex brick blocks are built in a step-by-step staggered manner from bottom to top, materials in a carbonization section stay or decelerate on the step-by-step inclined surface supports in the falling process, and meanwhile, the inclined surface supports which are staggered in the step-by-step manner form an air passage. A special structural design is adopted in a traditional furnace body, carbonization is more sufficient, a large amount of high-temperature pyrolysis gas generated in the carbonization process can be output through a channel in the furnace, and waste heat and the pyrolysis gas can be fully utilized; the carbonization furnace cavity adopts a special geometric structure, so that the accumulation of the raw materials can be effectively avoided, and the hot flue gas and the carbonized raw materials are fully carbonized.

A gas production apparatus includes: a separator configured to separate and capture a separated gas including carbon dioxide as a main component from an exhaust gas of exhaust gas equipment; reactors which are downstream of the separator, each of the reactors: (i) containing a reductant configured to contact the separated gas to produce carbon monoxide through a reduction reaction of carbon dioxide; (ii) being configured to separate at least some oxygen atoms split off from carbon dioxide in the reduction reaction; and (iii) having a reducing agent containing a metal oxide configured to reduce carbon dioxide as the reductant; a reducer configured to supply a reducing gas containing a reducing substance configured to reduce the reducing agent oxidized by contact with carbon dioxide; a pressure regulator configured to regulate a pressure of the separated gas; and a flow regulator configured to regulate a flow rate of the separated gas.

The present invention concerns a method and a plant complex for producing iron or steel.

A carbon baking furnace has at least one vertical baking shaft with a system and method for positioning green carbon bodies to be baked at the top of the vertical baking path and ringing the green carbon bodies with a sacrificial medium such as packing coke. The disclosure provides a system and method for controlling the delivery and removal of the sacrificial medium used to surround the carbon bodies within the baking paths. A volatile extraction system and method are provided. A system and method for unloading baked carbon bodies is disclosed.

A computer system (100), a computer-implemented method and a computer program product for training a reinforcement learning model (130) to provide operational instructions for blast furnace thermal control are provided. A domain-adaptive machine learning model (110) generates a first domain-invariant dataset (22) from historical operational data (21) obtained as multivariate time series and reflecting thermal states of respective blast furnaces (BF1 to BFn) of a plurality of domains. A transient model (121) of a generic blast furnace process is used to generate artificial operational data (24a) as multivariate time series reflecting thermal states of a generic blast furnace (BFg) for specific thermal control actions (26a). A generative deep learning network (122) generates a second domain-invariant dataset (23a) by transferring features learned from the historical operational data 21 to the artificial operational data (24a). A reinforcement learning model (130) determines (1400) a reward (131) for specific thermal control actions (26a) by processing the combined first and second domain-invariant datasets (22, 23a) in view of a given objective function. In accordance with the reward (131), the second domain-invariant dataset is regenerated based on modified parameters (123-2) and the determination of the reward is repeated to learn optimized operational instructions for optimized thermal control actions to be applied to respective operational states of one or more blast furnaces.

The present application relates to a double hearth kiln, comprising two kiln bodies, a feeding system, a waste gas discharging system, a fuel supply system, a discharging system and a control system. The two kiln bodies are built closely together, each of the kiln bodies is provided with a feeding port at the upper part and a discharging port at the lower part; a support beam is arranged between the calcination zone and the cooling zone of the kiln body, the two kiln bodies share one support beam, a flue port is arranged between the two kiln bodies, the flue port is arranged below the support beam; the support beam is a steel structure, lined with a heat preservation layer and a wear-resistant layer; the support beam is an inner sleeve type steel structure, provided with a channel for the circulation of cooling medium; the upper part of the support beam is provided with a ridge type structure. The double hearth kiln provided by the present application builds the two kiln bodies closely together, greatly shortening the length of the flue channel originally arranged between the two kiln bodies, which is conducive to reducing the construction cost.

Disclosed is a novel technology for applying SOEC in a direct reduction process in which a shaft furnace is used. A hydrogen reduction system according to the present disclosure has a shaft furnace, a reducing gas supply device, a reducing gas heating device, a source material pretreatment device, and a hydrogen production device. In this hydrogen reduction system, a reducing gas is supplied to the shaft furnace via the reducing gas supply device and the reducing gas heating device, and a 600°C to 900°C iron oxide source material is supplied to the shaft furnace via the source material pretreatment device. The hydrogen production device has an SOEC, and the SOEC uses a steam-containing gas which has been discharged from the shaft furnace to produce hydrogen gas. The hydrogen gas produced by the SOEC is used as a reducing gas.

Method for calcining carbonate mineral stones in a parallel flow regenerative kiln wherein the method comprises an extraction step of the heated cooling gas through a series of extracting port located in an effective cooling zone within a cooling zone below a connecting channel, said heating cooling gas enters into an implementation port orifice and passes into a port duct to reach an evacuation element at an average extraction velocity comprised between 0.5 and 5 m / s.

A blast furnace lining has an upper stack portion, an intermediate bosh portion, and a hearth portion, and can have a bottom pad portion. At least part of the hearth portion has an outer layer of a first refractory material having a thermal conductivity of at least about 16 W / m-k and an inner layer of a second refractory material having an iron erosion index of less than 1% and a thermal conductivity of at least about 8 W / m-K. Also provided are a blast furnace lined with the blast furnace lining, and a method for lining a blast furnace.

A charging device and method for a vertical reduction furnace, belonging to the field of high-temperature vacuum reduction technology, includes a charging cylinder and an operating rod. A receiving component is hinged to the bottom of the operating rod. The receiving component has a multi-piece structure. During charging, the operating rod and the receiving component are located inside the charging cylinder, with the free end of the receiving component abutting against the inner wall of the charging cylinder, covering the inner cross-section of the charging cylinder. During discharge, the charging device is located between the reduction tank and the central tube. The receiving component extends from the bottom of the charging cylinder under the thrust of the operating rod, and the free end of the receiving component falls under gravity, discharging the material from the bottom of the charging cylinder. This invention, by setting up a charging cylinder and using an operating rod with a hinged receiving component inside the charging cylinder, ensures that the material is released in an orderly manner from the bottom to the opening during charging, with a controllable release speed. This ensures the integrity of the pellets, avoids the impact force caused by the charging drop, reduces the friction between the pellets and the central tube, facilitates the lifting of the central tube, and ensures smooth slag discharge.

The invention relates to a biomass hard carbon cathode material production vertical integrated furnace, and relates to the technical field of biomass hard carbon cathode materials, the biomass hard carbon cathode material production vertical integrated furnace comprises a mounting plate, a support frame arranged on the outer wall of one side of the mounting plate, a plurality of heat insulation shells arranged on one side of the mounting plate and above the support frame, and a heating rod arranged on the top of the inner wall of each heat insulation shell; inert gas cylinders are symmetrically arranged on the side, away from the heat insulation shell, of the mounting plate and communicate with the side, away from the heat insulation shell, of the mounting plate through conveying pipes, a lifting mechanism is arranged on the supporting frame, and a moving mechanism is arranged below the heat insulation shell. According to the storage device, the following problems can be solved: through cooperation of a sliding circular plate and an arc-shaped fixing plate, a storage cylinder is fixed, and the storage cylinder is prevented from deviating during movement; the reciprocating lead screw drives the storage cylinder to rotate, and heated air enters the square through groove of the storage cylinder, so that raw materials in the storage cylinder can be uniformly heated, and the processing speed of the raw materials is increased.

The utility model relates to the technical field of metallurgical equipment, and discloses an improved shaft furnace for metallurgy, which comprises a base and a circular shaft furnace body arranged above the base, a furnace cover is arranged at the top of the shaft furnace body, an inner wall is arranged in the shaft furnace body, a hearth is arranged between the inner wall and the inner wall of the shaft furnace body, and a furnace cover is arranged on the hearth. A plurality of material distribution openings are formed in the top of the hearth, a plurality of discharging hoppers are arranged on the lower portion of the side face of the hearth, a combustion chamber is arranged on the outer side of the shaft furnace body, a plurality of through grooves are formed between the combustion chamber and the hearth, a plurality of combustion nozzles are installed on the side face of the combustion chamber, and an annular cold air pipeline is installed at the position, above the discharging hoppers, of the outer side of the shaft furnace body. A plurality of air guide pipes communicated with the hearth are arranged on the inner side of the cold air pipeline, and an air inlet pipe is arranged on the outer side of the cold air pipeline. According to the utility model, finished product balls can be cooled, and the condition that the discharging transfer car is damaged due to high temperature is effectively reduced; and the using amount of coal gas can be reduced, energy consumption is reduced, meanwhile, green pellets can be rapidly dried, and the yield is increased.

Provided is a molten material height detection method that can easily identify a frequency at which a molten material height in a smelting furnace can be detected and can detect a molten material height by using a vibration intensity at the frequency. The molten material height detection method for detecting a molten material height in a smelting furnace includes measuring vibration at one or more positions of a furnace wall of a lower portion of the smelting furnace, calculating a vibration intensity at a frequency that is correlated with vibration generated by introduction of a gas into an inflow hole of the lower portion by analyzing a frequency of the vibration, and detecting the molten material height by using a corrected vibration intensity obtained by removing influence of blast volume of a gas introduced through the inflow hole from the vibration intensity at the frequency.

The present invention discloses a decarbonation process of carbonated materials, in particular limestone and dolomitic limestone, with CO2 recovery in a multishaft vertical kiln (MSVK) comprising a first, a second, and optionally a third shaft with preheating, heating and cooling zones and a cross-over channel between each shaft, alternately heating carbonated materials by a combustion of at least one fuel with at least one comburent up to a temperature range in which carbon dioxide of the carbonated materials is released, the combustion of the fuel and the decarbonatation generating an exhaust gas, the decarbonated materials being cooled in the cooling zones with one or more cooling streams, wherein a mixing between the exhaust gas and the one or more cooling streams is minimized by operating said kiln in a mode in which between two subsequent alternating heating cycles between the first and the second or the third shaft, the decarbonated materials in at least the first, the second and / or the third shaft are cooled with the one or more cooling streams while a supply of the fuel in each shaft is stopped.

The invention relates to the technical field of lime production, in particular to a double-hearth shaft kiln material level automatic adjusting system and method based on image processing, and the system comprises a high-temperature industrial endoscope, a lens alignment refractory brick, a PLC control system, a differential supporting plate discharging device and a hydraulic system; the lens alignment refractory brick is arranged on the side wall of the top of the kiln chamber and coincides with the horizontal center line of the kiln chamber. The high-temperature industrial endoscope is arranged on the opposite side of the lens alignment refractory brick to ensure that a complete limestone charge level can be contained in the visual field of the lens, and the lens alignment refractory brick is located at the vertical position in the visual field of the lens, so that the axis of the lens coincides with the horizontal center line of the kiln chamber; the differential supporting plate discharging device is located under a discharging port of the shaft kiln, 6-8 supporting plates are evenly arranged in the circumferential direction, and each supporting plate can independently conduct vibration discharging. According to the method, the height of each area of the material surface is calculated and adjusted in real time, so that the limestone material surface is smoother, the calcination time of each part of the limestone material is more uniform, and the underfiring rate and the overfiring rate are reduced.

A method for detecting the height of a molten material with higher detection accuracy than conventional methods is provided. A molten material height detection method for detecting the molten material height in a blast furnace, which measures vibrations at one or more positions on the furnace wall in the lower part of the blast furnace, analyzes the vibration frequency to identify the vibration intensity of a frequency that is correlated with the vibration generated by introducing gas into an inlet in the lower part of the furnace, and detects the molten material height using a corrected vibration intensity that removes the influence of the amount of bosh gas generated by the introduction of gas from the vibration intensity of the identified frequency.

The utility model discloses a denitration device for a lime shaft kiln, which structurally comprises a main body unit and a denitration unit, the main body unit comprises a tank body, a filter plate and a shunt pipe are arranged in the tank body, and a spray head is mounted on the shunt pipe; the supporting unit comprises a water storage tank and a medicament tank, a top cover is arranged on the water storage tank and the medicament tank, and a fixing frame is detachably connected to the top cover through bolts. When the device is used, flue gas enters the fixed box through the gas inlet, the temperature of the flue gas is sensed through the temperature sensor, and when the temperature of the flue gas is too high, cold water in the water storage tank is pumped out through the first water pump and conveyed into the snake-shaped copper pipe through the water conveying pipe, so that heat in the flue gas is taken away, and the flue gas is cooled; circulating cold water enters the water storage tank through the drainage pipe to circulate, the cooled flue gas is guided into the tank body to be filtered and denitrated, cooling is conducted in a cold water circulation heat exchange mode, heat in the flue gas can be rapidly absorbed, the temperature of the flue gas is reduced, and the situation that a filter screen is burnt or a spray head structure is damaged due to overheated flue gas is prevented.

The application provides a hydrogen-nitrogen-based shaft furnace direct reduction ironmaking system and process method, and the ironmaking system comprises a shaft furnace, the shaft furnace has a reduction zone, a constant pressure zone and a cooling zone from top to bottom; a cooling and heat recovery unit, the cooling and heat recovery unit has a low-temperature process gas supply pipe connected with the lower part of the cooling zone, and a heat recovery pipe connected with the constant pressure zone and the upper part of the reduction zone; and a process gas circulation treatment unit, the process gas circulation treatment unit has a process gas circulation pipe connected with the top flue gas outlet of the shaft furnace and the reduction zone, and the process gas circulation pipe is provided with a first dust remover, a dehydrator and a nitrogen removal device. The application can solve the problems of uneven gas distribution and low heat utilization efficiency in the existing hydrogen-nitrogen-based shaft furnace process, effectively control the nitrogen concentration in the process, efficiently recover and utilize the system energy, and optimize the product cooling and the heat distribution in the furnace.