1808 results about "Coke" patented technology

The invention belongs to the technical field of dry quenching, and provides a dry quenching boiler inlet temperature prediction method based on a DeepSeek large model. According to the method, the inlet temperature T6 of the coke dry quenching boiler is predicted by using the data, namely the process variable, changed in real time in the coke dry quenching process; the key control variable is a manually controlled variable, the change of the process variable is controlled / adjusted by changing the key control variable, and automatic control is realized by utilizing a prediction-control joint optimization method and by means of reinforcement learning. According to the prediction method provided by the invention, a complex nonlinear relationship and interaction among multiple variables can be captured, and strong coupling and nonlinear influence among multiple process parameters in the dry quenching process can be processed; through fine tuning on a large amount of historical data, the method can automatically learn and adapt to different working conditions, reduces the dependence on artificial feature engineering, and improves the generalization capability and prediction performance of the model.

The invention discloses an automatic control method for the air introduction amount of a dry quenching furnace, and relates to the technical field of dry quenching, and the method comprises the following steps: collecting CO and H concentration distribution data and dust concentration gradient data in an annular flue of the dry quenching furnace, and boiler inlet temperature and circulating gas flow in real time; establishing a multi-parameter coupled dynamic prediction model, and predicting coke burn-out rates and boiler thermal efficiency under different air introduction amounts; an optimal air introduction amount threshold value is calculated through a model prediction control algorithm; on the basis of the optimal air introduction amount threshold value, the opening degree of an electric valve of an air introduction pipe is dynamically adjusted, meanwhile, displacement compensation of a servo mechanism at the position of an introduction opening in the annular flue is triggered, and an introduction point is made to be located in the optimization interval of the CO concentration, the Hconcentration and the dust concentration all the time; and a self-adaptive correction module is established, when it is detected that coke maturity is abnormal and coke discharge temperature fluctuation is abnormal, a compensation control mode based on deep reinforcement learning is automatically switched, and dynamic prediction model parameters are updated.

The embodiment of the invention discloses an intelligent energy consumption regulation and control steel smelting system based on multi-energy complementation, and the system comprises a multi-energy complementation energy supply system which is used for integrating various energy forms, forming a dynamic cooperative energy supply network, and carrying out the energy cooperative operation according to an energy priority strategy and a dynamic matching mechanism; the intelligent regulation and control platform adopts a three-layer framework of'perception-decision-execution 'to coordinate energy flow and process operation between the multi-energy complementary energy supply system and the multi-energy coupling process equipment; the multi-energy coupling process equipment comprises hydrogen-based direct reduction ironmaking equipment, and hydrogen is used for replacing traditional coke to serve as a reducing agent for ironmaking; comprehensive energy supply monitoring and optimization can be carried out on the steel smelting process, various renewable energy sources are combined, and the problems that a single renewable energy source is intermittent, depends on a power grid and the like are effectively solved; meanwhile, the multi-energy complementary hydrogen storage process is coupled with the hydrogen metallurgy process, and the multi-energy cooperation problems of whole-process green power supply, waste heat utilization and the like are solved.

The utility model discloses a jacket heat preservation flame arrester for high-oxygen VOCs (volatile organic compounds) to enter dry quenching, which belongs to the technical field of flame arresters and comprises two valve bodies respectively communicated with a gas pipeline for the VOCs to enter the dry quenching and a flame arresting screen arranged between the two valve bodies, a jacket capable of introducing steam to preserve heat is arranged between the two valve bodies, and the two valve bodies are communicated with a gas pipeline for the VOCs to enter the dry quenching. The jacket is arranged on the outer side of the fire-retardant screen; a jacket inlet communicated with a steam pipeline is formed in one side of the jacket, and a jacket outlet communicated with a drain pipeline is formed in the other side of the jacket. According to the utility model, the temperature around the fire-retardant screen can be ensured not to be lower than the crystallization temperature of naphthalene gas, so that the naphthalene gas in VOCs gas can smoothly pass through the fire arrester and then enters dry quenching for incineration, and the VOCs are really discharged without external emission.

The invention discloses a method for melting and smelting ferrochrome in an all-oxygen hydrogen-rich low-carbon furnace, which comprises the following steps: (1) proportioning and uniformly mixing chromite pellets, coke and lime according to the mass ratio of 1: (0.15-0.2): (0.08-0.15), and filling the mixture into the all-oxygen hydrogen-rich low-carbon furnace; (2) high-temperature hydrogen-rich gas at the temperature of 900-1100 DEG C is introduced into the middle of the furnace body, and selective reduction of ferrochrome oxide is achieved; blowing industrial pure oxygen at the lower part of the furnace body, combusting with coke to generate CO, and driving a secondary reduction reaction; (3) maintaining a high-temperature environment in the furnace through oxygen-fuel combustion to completely melt the materials into molten iron, and carrying out central stirring on the molten iron to form a vortex with the height-diameter ratio of 0.5-1.5; and (4) discharging the molten iron after the reaction is completed. According to the method, the reduction rate of chromium in the chromite exceeds 92%, the carbon emission is reduced by 40% or above compared with a traditional blast furnace and submerged arc furnace process, meanwhile, the method has the advantages of being high in smelting efficiency, low in energy consumption, stable in product quality and the like, and a low-carbon and efficient innovative path is provided for ferrochrome smelting.

The invention provides titanium-containing anhydrous stemming for a blast furnace and a preparation method of the titanium-containing anhydrous stemming, and belongs to the technical field of refractory materials for the blast furnace. The titanium-containing anhydrous stemming for the blast furnace comprises the following raw materials: 40-60 parts of titanium corundum, 5-15 parts of silicon carbide, 10-20 parts of ferro-silicon nitride fine powder, 5-15 parts of titanium dioxide fine powder, 5-15 parts of vanadium-titanium slag fine powder, 5-10 parts of coke fine powder, 1-5 parts of monatomic silicon fine powder, 1-5 parts of ball clay micro powder, 1-5 parts of aluminum nitrate micro powder and 1-2 parts of magnesium alon micro powder. Gas-phase substances of Si (g), Al (g) and Mg (g) can be formed in the stemming at high temperature by the monatomic silicon fine powder and the MgAlON micro powder in the raw materials and react with CO and N2 in the environment to generate ceramic whiskers such as SiC, Si3N4, AlN and MgAl2O4, and the generated ceramic whiskers are distributed in a staggered manner and are filled in pores of the stemming, so that the high-temperature strength and the volume stability of the stemming are remarkably improved.

The invention discloses a cyclone separation and moving particle bed coupled pulverized coal pyrolysis oil gas high-temperature dust removal system, and belongs to the technical field of coal clean utilization. The system comprises a cyclone separator, a fine filtration unit, a filter material cyclic regeneration unit and an intelligent control unit, the fine filtration unit comprises a particle bed, a particle bin is arranged at the top end of the particle bed, and a composite filter material layer is arranged on the particle bed; a dust-containing high-temperature oil gas pipeline and a pretreatment high-temperature oil gas pipeline are arranged at the top end of the cyclone separator, dust-containing high-temperature oil gas is introduced into the cyclone separator through the dust-containing high-temperature oil gas pipeline to be pretreated, and the pretreated dust-containing high-temperature oil gas is introduced into the particle bed through the pretreatment high-temperature oil gas pipeline to be finely filtered; and a coke breeze discharge pipe is arranged at the bottom of the cyclone separator. The invention is used for solving the technical problem of low gas-solid separation efficiency at high temperature caused by the adoption of a single filter material in the existing pulverized coal dust removal system.

A coke product configured to be used in foundry cupolas to melt iron and produce cast iron products is disclosed herein. In some embodiments, the coke product has a Coke Reactivity Index (CRI) of at least 30% and an ash fusion temperature (A FT) less than 1316° C. Additionally or alternatively, the coke product can comprise a fixed carbon content of at least 80% and / or a volatile matter content of no more than 1.0%.

The invention relates to the technical field of submerged arc furnace power supply systems, and provides an industrial iron smelting detection method based on a direct-current submerged arc furnace, which comprises the following steps of: constructing an electric thermal field chemical reaction dynamic model, integrating electric field, thermal field, chemical and mechanical full-dimensional data, and analyzing a multi-physical field coupling state in the furnace in real time; real-time working conditions and historical data are matched through a dynamic time warping algorithm, optimal power supply parameters are screened, and causes such as insufficient coke activity are positioned; and a digital twin simulation verification optimization scheme is utilized to realize millisecond-level adaptive control. The equipment reliability is improved through edge calculation and a safety interlocking mechanism, the limitation of artificial experience is broken through, and an efficient and accurate intelligent control solution is provided for power supply of the direct current submerged arc furnace.

The utility model relates to a limit protection device of a dry quenching elevator, which belongs to the technical field of coking dry quenching equipment and is used for protecting the limit of the dry quenching elevator. According to the technical scheme, a base is a rectangular plate, a fixing support is perpendicularly welded to the plate face of the base, an adjusting movable plate is connected with the fixing support through an adjusting fastening bolt, a limiting fixing plate is perpendicularly welded to the front end of the adjusting movable plate, and a U-shaped limiting plate is fixed to the plate face of the limiting fixing plate through a limiting fixing bolt; the two upper limiting guide plates and the two lower limiting guide plates are located on the two sides of the U-shaped limiting device respectively and are perpendicularly connected with the plate face of the limiting fixing plate in a welded mode respectively, and the upper limiting guide plates and the lower limiting guide plates on the two sides of the U-shaped limiting device respectively form two V-shaped guide grooves. The elevator limiting device is simple in structure and reliable in work, the elevator can be protected from being damaged due to the fact that the elevator is scratched by the running elevator, safety and equipment hidden dangers are effectively eliminated, and normal running of the elevator is guaranteed.

Industrial cars for holding high-temperature materials, such as flat push hot cars for transporting hot coke and deposits, and associated systems and methods are disclosed herein. In some embodiments, an industrial car can include an at least partially enclosed hot box with a base and sidewalls, and one or more of the base or sidewalls can be covered by surface plates. The surface plates can be arranged in a floating configuration with gaps therebetween, such that the surface plates can move relative to one another and thermally expand without exerting excessive compressive force against adjacent surface plates. In some embodiments, the hot box can also include a roof with a first non-curved member and a second non-curved member abutting the first non-curved member. In some embodiments, the industrial car can include one or more emission ducts to remove dust and exhaust from within and around the industrial car.

The invention discloses a high-carbon ferro-chrome smelting control method based on a submerged arc furnace, and relates to the field of high-carbon ferro-chrome smelting control, and the high-carbon ferro-chrome smelting control method comprises the following steps: constructing a three-dimensional temperature measurement network, generating temperature field distribution in the furnace based on three-dimensional space coordinates of all temperature measurement points, and further extracting boundary position coordinates and volume change trend of a molten pool; the method comprises the following steps: performing matching degree calculation on an electrode position impedance gradient curve and a molten pool boundary change trend to diagnose the structural stability of a crucible area, calculating the partial pressure ratio of key components based on hearth pressure, and comprehensively diagnosing the overall health state grade of the furnace condition in the furnace in combination with the structural stability state of the crucible area in the furnace; according to the diagnosed overall health state grade of the furnace condition, the proportion of the chromium ore, the coke and the flux is dynamically adjusted, accurate sensing of the multi-dimensional state in the furnace and grading diagnosis of the furnace condition are achieved, the problems of insufficient reduction of raw materials, waste of the chromium ore and the like can be avoided in time, and the product purity and the smelting stability are guaranteed.

The invention belongs to the technical field of dry pulverized coal gasifiers, and discloses an experimental method for CaO to catalyze high-temperature coke high-pressure gasification reaction under different atmospheres, which comprises the following specific steps: step 1, preparing experimental raw materials and pretreating to select representative coal types; the diffusion environment of the industrial gasifier is simulated by establishing a cooperative regulation and control mechanism of pressure, gas velocity and pore structure, the thickness of a boundary layer is calculated according to the Fick diffusion law, a diffusion resistance quantitative relational expression is constructed for dynamic correction, and a variable diffusion strength experimental group is designed to quantify diffusion contribution. The diffusion and reaction rate ratio is quantitatively evaluated through a Weber number model, a catalysis and blank control synchronous experiment is carried out at the same time, a catalysis efficiency factor is calculated, a catalysis-diffusion synergistic phase diagram is drawn, and a reaction control region, a diffusion control region and a transition region are definitely defined; and the risk that the reaction stagnation caused by the fact that the high-pressure diffusion retardation effect is misjudged as catalytic activity attenuation or pore collapse is mistakenly attributed to catalyst deactivation is eliminated.

The invention relates to the technical field of steel sintering processes, in particular to a biomass gasification coupling system for a steel sintering process, which comprises a biomass gasification system, a circular cooler waste heat utilization system and a waste heat power generation system, the biomass gasification system comprises a biomass drying system, a raw material conveying belt system, a biomass gasification furnace, a biomass gas heat insulation combustion chamber, a sintered coke powder preparation system and a biomass gas purification system, and the biomass drying system is used for drying biomass raw materials; and the dried biomass raw materials are conveyed to the biomass gasification furnace through the raw material conveying belt system. According to the coupling system for biomass gasification for the steel sintering process and the control method, biomass serves as zero-carbon energy, and biomass charcoal obtained after biomass gasification can replace part of solid fuel to achieve the carbon reduction effect. Meanwhile, the biomass gasified gas can replace a part of coal gas, and the carbon reduction effect can also be achieved.

The invention relates to a feed coal preheating and drying and semicoke cooling coupled low-rank coal pyrolysis system and method. The low-rank coal pyrolysis system comprises a low-rank coal pyrolysis device, an air fan, an air secondary heat supplementing device and a cyclone dust collector, the low-rank coal pyrolysis device is sequentially provided with a coal direct drying section, a low-temperature pyrolysis section, a medium-high-temperature pyrolysis section and a semicoke indirect cooling section from top to bottom; the lower part of the semicoke indirect cooling section is provided with an air inlet, and the upper part is provided with a hot air outlet which is connected with the hot air inlet of the coal direct drying section through a hot air pipeline; and the hot air pipeline is provided with an air secondary heat supplementing device. In the feed coal drying and semicoke cooling process, air is adopted as carrier gas for heat exchange, sufficient recovery of semicoke heat is achieved, the recovered heat is used for drying and preheating the feed coal, and comprehensive utilization of the heat is achieved; the process characteristics of coal drying preheating, pyrolysis and semicoke cooling are fully considered, an economical and reasonable heat exchange form is adopted, the process is simple, the heat recovery efficiency is high, and the productivity of the pyrolysis device is high.

The invention provides a comprehensive evaluation method, system and device based on single coke quality and mixed coke use and a readable storage medium, and the method comprises the steps: constructing a multi-layer progressive evaluation system from single coke quality evaluation to mixed coke performance prediction, and then to economical efficiency dynamic optimization; performing quantitative evaluation on the quality of the single coke through the basic evaluation layer to obtain a quality index; predicting a synergistic effect of various coke proportions through the mixing performance layer, and determining a mixing performance index; performing cost analysis on the proportioning scheme by combining an economic evaluation layer with price fluctuation to obtain a cost performance index; and a plurality of matching schemes are generated through the dynamic optimization layer, and an optimal solution meeting balance of quality, performance and cost is output.

The invention relates to the technical field of intelligent control, in particular to a coke pushing process environment dust removal system air volume intelligent energy-saving regulation and control system and method, and the system comprises a process signal module, an image sensing module, a dynamic infrared module, a real-time flue gas analysis module and a dust removal air volume control module. In the invention, the air volume regulation of the dust removal equipment is not a fixed and extensive mode any more, but is converted into a four-gear variable-speed intelligent response matched with the actual smoke dust load, the dust removal equipment runs at a low-energy-consumption gear when the smoke dust generates initial stage or light pollution, and the air volume is gradually increased along with the rising of the smoke dust load, so that the dust removal efficiency is improved. When large-scale smoke dust leakage caused by equipment faults or extreme working conditions is monitored, the highest-gear full-force trapping is immediately started, the treatment effect is ensured, and the regulation and control according to needs not only improves the smoke dust trapping efficiency and effectively restrains unorganized emission, but also reduces the operation energy consumption of a dust removal system, and realizes double improvement of environmental protection benefits and economic benefits.

The invention provides a bituminous coal caking index full-process detection system based on a mechanical arm and a use method thereof, which can realize the operation of the whole bituminous coal caking index detection process from blanking weighing to crucible testing and then cleaning and recycling through the mechanical arm, and can liberate laboratory technicians from a tedious, monotonous and harmful working environment. And intelligent, unmanned, specialized, technical and standardized caking index detection and inspection service is realized. The system comprises a blanking weighing module used for placing quantitative samples into a crucible; the bonding pre-treatment and post-treatment module is used for treating samples before and after coking; the high-temperature furnace module is used for performing high-temperature coking treatment on the sample; the mechanical arm is used for clamping a crucible or a crucible holder and circulating among the blanking weighing module, the bonding pretreatment and aftertreatment module, the high-temperature furnace module, the bonding rotary drum tester module, the cooling module and the cleaning module.

The invention discloses a supercritical carbon dioxide energy storage and industrial complementary energy coupling circulation system and a control method, and relates to the technical field of energy storage. The waste heat recovery system performs countercurrent heat exchange with carbon dioxide by using high-temperature flue gas generated by combustion of high / coke / converter gas; and the residual cold recovery system uses condensed water of the power plant for cooling carbon dioxide in each link. The compressed carbon dioxide energy storage system compresses and stores carbon dioxide in a high-pressure storage tank. In the compressed carbon dioxide power generation system, high-pressure carbon dioxide is preheated and heated to drive a high-pressure expansion machine to do work and generate power, the carbon dioxide after doing work is heated to drive a low-pressure expansion machine to do work and generate power, and finally the carbon dioxide is cooled, condensed and liquefied through a cooler and a condenser and then returns to a low-pressure storage tank. According to the system, industrial complementary energy is efficiently utilized, stable energy storage and release are achieved, and the energy utilization efficiency is improved. The problem that defects exist in the aspects of industrial gas efficient utilization and energy storage coupling in the prior art is solved.

The invention relates to a method for adding damping-down materials before long-term damping-down of a blast furnace. The damping-down materials comprise light-load materials and empty coke. The load of the light-load material can be reduced progressively according to the smooth running condition of the blast furnace before damping down, or the load of the furnace material before damping down is maintained. The adding amount of each batch of empty coke is 1.0-1.5 times of that of the coke batch before damping down. The loaded empty coke is completely composed of dry quenching coke with reasonable indexes. When empty coke is added, the flux dosage is not additionally increased any more. And the first batch of empty coke is loaded at the middle position of the furnace bosh. The second batch of empty coke is loaded in the middle of the furnace bosh, the third batch of empty coke is loaded in the lower part of the furnace body, and the fourth batch of empty coke is loaded in the middle of the furnace body. According to the invention, the addition of empty coke is reduced, the recovery of hearth heat is promoted, and the fuel ratio of the blast furnace is reduced.

The invention relates to an intelligent combustion monitoring and rapid intervention control method and system for deep peak regulation of a coal-fired boiler. The method comprises the following steps: reconstructing a two-dimensional temperature field of a hearth through regularization optimization modeling by utilizing hearth infrared measuring point data; constructing a coal quality dynamic identification model to realize dynamic monitoring and trend prediction of coal quality fluctuation; a combustion state nonlinear probability fusion model is constructed, on the basis of a probability graph model, information such as flame detection signals, hearth negative pressure, flame images, oxygen amount, steam drum water level, coke falling and coal interruption is fused, joint probability distribution is constructed, time sequence incremental learning is conducted in combination with an XGBoost model, and dynamic recognition and early warning of the combustion state are achieved. Key parameters such as a flame image, temperature field distribution and negative pressure fluctuation are collected in real time by means of a hearth multi-dimensional combustion state recognition model, a decision module is triggered when a combustion state score reaches an early warning threshold value, a quick oil gun is triggered to be put into use, and early warning in advance is changed into quick intervention.

The utility model relates to the technical field of coking material distribution and storage, in particular to a bridge type crown block coke distribution system. The bridge type crown block comprises a block body and traveling wheels mounted at two ends of the block body, the traveling wheels are mounted on the X-direction rails on the supports on two sides of the focal field respectively, and the bridge type crown block moves along the X-direction rails; the closed reversible moving belt conveyor is mounted on a Y-direction track in the vehicle body and moves along the Y-direction track; the closed belt conveyor is fixedly connected to the top of the vehicle body, and a discharging port of the closed belt conveyor is located above a belt of the closed reversible moving belt conveyor. The adhesive tape sealing device is arranged between the closed belt conveyor and the closed reversible moving belt conveyor; and the coke distributing and dust collecting device is mounted on a Y-direction traveling track at the bottom of the vehicle body. Face stacking material taking can be achieved in the coke field, and the coke storage amount in unit area is high; the coke storage cost per ton is low, and the method is suitable for a closed coke field with small coke storage capacity.

The invention provides a coke nut distribution method and system for blast furnace top distribution, and relates to the field of blast furnace ironmaking. The method comprises the steps that three-dimensional modeling software is adopted, a three-dimensional geometric model is built for blast furnace top material distribution equipment, a material model is built for materials, physical attribute parameters between the materials are set, and an initial model is obtained; optimizing the physical attribute parameters among the materials to obtain an optimized material distribution model; a plurality of working conditions are preset according to the feeding states of the ores and the coke nuts, and the optimized material distribution model is adopted for simulation; and analyzing the simulation result of each working condition, and determining the optimal working condition of the coke nut distribution effect. According to the method, a three-dimensional simulation model established according to actual blast furnace top material distribution equipment is utilized, simulation is performed under different preset working conditions, the distribution behavior and rule of the coke nuts in the whole transfer process of entering the blast furnace throat from the under-tank system are analyzed, and finally the working condition of the optimal coke nut material distribution effect is determined; and interference and inhibition of nut coke on central airflow during blast furnace combustion are reduced.

The invention discloses a layered, zoned and differentiated CO2 injection system and method for a blast furnace, and belongs to the technical field of ferrous metallurgy low carbon. The system comprises a CO2 supply and distribution system, a tuyere area injection module, a furnace body middle-lower part injection module and a furnace body upper part injection module. And according to the temperature gradient and atmosphere layering characteristics in the blast furnace, a differential CO2 distribution proportion and a collaborative thermal compensation strategy are adopted. An oxygen-CH4 synergistic injection device is arranged in a tuyere area, and rapid conversion of CO2 is promoted by using a high-temperature strong reducing atmosphere; a biomass charcoal synergistic injection device and an angle-adjustable nozzle are arranged at the middle lower part of the furnace body, so that efficient gasification reaction is realized; and low-concentration CO2 mixed injection is adopted at the upper part of the furnace body, so that indirect reduction reaction is promoted. According to the invention, the CO2 conversion rate is 65-80%, the coke ratio is reduced by 15-25%, the consumption of CO2 per ton of iron is 260-90Nm < 3 >, the carbon emission is obviously reduced, and the ironmaking efficiency is improved.

The invention provides a boiler decoking method, a boiler decoking device, boiler decoking equipment and a medium, and the method comprises the following steps: collecting multi-mode coke residue distribution data in a boiler; carrying out fusion processing on the multi-mode coke residue distribution data to obtain coke residue distribution characteristic parameters in the boiler; based on the coke residue distribution characteristic parameters, determining a coke residue growth trend by using a coke residue growth prediction model; according to the growth trend of the coke slag, acoustic wave control parameters and steam control parameters are determined through a digital twinborn simulation technology; and controlling a sound wave generator and a steam pulse device to perform targeted decoking on the boiler based on the sound wave control parameters and the steam control parameters. The decoking efficiency and accuracy can be improved.

The invention belongs to the technical field of additives for coal-fired boilers, and particularly relates to a coal-saving desulfurization ash-removal decoking agent applied to boilers. The coal-saving, desulfurization, ash-removal and coke-cleaning agent is prepared from the following components: a component A, a component B and a component C, wherein active components CaO, HoFeO3 and CeO2 are loaded on a carrier SrO-MgO; the component B is prepared by loading the active components MgCO3 and KNO3 on the carrier BaFe12O19; the component C is Cu-doped CoFe2O4, and the component C is Cu- The mass ratio of the component A to the component B to the component C is (5-8): (2-3): 1. The coal-saving desulfurization ash-removal coke cleaning agent can effectively save fuel, improve the sulfur fixation efficiency, reduce generation of coke scales on the furnace wall, remove old coke scales, improve the working condition of a circulating fluidized bed boiler and greatly reduce the operation and maintenance cost of the circulating fluidized bed boiler.

The present invention provides a coal-saving, desulfurization, and decoking catalyst for boilers and an application method thereof. Through the synergistic effect of multiple components, the catalyst can simultaneously achieve coal-saving, desulfurization, decoking, corrosion protection, and ash cleaning functions during boiler operation, effectively solving the problems of single function, low desulfurization efficiency, poor decoking effect, and insufficient adaptability in the prior art. The desulfurization catalyst neutralizes sulfur oxides in flue gas, reducing low-temperature slagging. The temperature-sensitive expansion particles dynamically expand and peel off hard coke. The porous carrier particles adsorb ash and complex salts. The high-temperature retention loosening agent and the catalyst work together to prevent secondary accumulation, improve heat transfer conditions, and increase boiler thermal efficiency. The coal-saving agent reduces fuel consumption. The metal protective agent forms an anti-corrosion film on the heated surface, extending the life of the equipment and significantly improving the economic efficiency of boiler operation.

The invention relates to the technical field of submerged arc furnace power supply systems, and provides an industrial iron smelting detection method based on a direct-current submerged arc furnace, which comprises the following steps of: constructing an electric thermal field chemical reaction dynamic model, integrating electric field, thermal field, chemical and mechanical full-dimensional data, and analyzing a multi-physical field coupling state in the furnace in real time; real-time working conditions and historical data are matched through a dynamic time warping algorithm, optimal power supply parameters are screened, and causes such as insufficient coke activity are positioned; and a digital twin simulation verification optimization scheme is utilized to realize millisecond-level adaptive control. The equipment reliability is improved through edge calculation and a safety interlocking mechanism, the limitation of artificial experience is broken through, and an efficient and accurate intelligent control solution is provided for power supply of the direct current submerged arc furnace.

The utility model discloses a numerical control oxygen lance for blowing in an iron-making blast furnace, which comprises a tubular lance body, and the tubular lance body comprises a lance body front section and a lance body rear section; wherein the gun body front section is used for being inserted into a blast furnace tap hole and stretching into a blast furnace hearth, and the gun body rear section is located outside the tap hole; an air inlet connector is formed in the rear section of the gun body; the rear section of the tubular gun body is provided with a connecting plate, the front end of the connecting plate blocks the rear section of the tubular gun body, and the rear end of the connecting plate is provided with a connector; wherein the tubular gun body is used for conveying mixed gas introduced from the gas inlet connector into a blast furnace hearth from the front section of the gun body; the blast furnace taphole is provided with the hole, and the tubular gun body extends into the hole, so that a sufficient gas source can be directly provided for the combustion of coke at the bottom of the blast furnace, the sufficient combustion of the coke is ensured, and the temperature of the blast furnace is quickly increased.

The present invention discloses a baking process for a converter, comprising: adding coke with a first preset weight to the converter; adding firewood with a second preset weight into the scrap steel bucket, igniting it and then adding it into the converter; adding coke to the converter in batches according to the baking duration; adjusting the oxygen lance flow rate according to the baking duration; and adjusting the oxygen lance position according to the baking duration. By means of the present invention, the baking quality of the converter is improved.