1122 results about "Coke oven" patented technology

A system for capturing carbon dioxide from flue gas produced by a coke oven includes a coke oven system and a capture system. The coke oven is configured to process coal to produce coke and a flue gas comprising carbon dioxide. The coke oven includes an induced draft fan positioned downstream of the coke oven. The induced draft fan is configured to provide a vacuum to the coke oven and move the flue gas away from the coke oven. The coke oven system also includes a stack open to atmosphere and downstream of the induced draft fan. The capture system is fluidically coupled to the coke oven system at a point between the coke oven and the stack. The capture system is configured to remove carbon dioxide from the flue gas.

Methods and systems for coking coal blends to produce foundry coke products are disclosed herein. Methods for producing coke products can include charging a coal blend into a coke oven; and heating the charged coal blend such that a crown temperature of the coke oven is greater than a lower bound coking temperature. The pyrolysis duration begins when the crown temperature of the oven is greater than the lower bound coking temperature, and ends when the crown temperature of the oven is less than the lower bound coking temperature.

The invention relates to the technical field of intelligent control, in particular to a coke oven gas collecting tube pressure dynamic adjusting method and system based on intelligent control, and the method comprises the steps: obtaining pressure data from a gas collecting tube through a sensor, and storing the pressure data in a time sequence format to obtain a pressure deviation initial sequence; according to the pressure deviation initial sequence, calculating a data difference value and carrying out smoothing processing to obtain a change rate sequence; analyzing the change trend of the change rate sequence, and calculating a secondary difference value to obtain a change acceleration sequence; according to the change rate sequence and the change acceleration sequence, predicting a pressure deviation development trajectory by adopting a filtering method to obtain a predicted deviation trajectory; and if the predicted deviation trajectory exceeds a preset threshold range, obtaining a deviation influence evaluation value through historical data comparative analysis. The problem that the pressure control precision of the coke oven gas collecting pipe is poor in the high-temperature and high-pressure environment is solved, and the pressure adjusting precision of the gas collecting pipe in the high-temperature and high-pressure environment is improved.

The invention provides a coke oven automatic heating control method and system, and belongs to the technical field of coke oven control, the method is applied to a coke oven temperature control system, and the method comprises the following steps: based on each temperature detection device, obtaining the temperature of a carbonization chamber corresponding to the temperature detection device, and obtaining the actual temperature of each carbonization chamber; determining a standard temperature range of each carbonization chamber based on the heating duration of the coke cake in each carbonization chamber; determining whether each carbonization chamber needs to execute temperature control or not based on the actual temperature of each carbonization chamber and the standard temperature range of each carbonization chamber; in response to existence of a target carbonization chamber in the carbonization chambers, determining a target combustion chamber based on the temperature deviation degree of the target carbonization chamber; the target carbonization chamber is the carbonization chamber needing temperature control in the carbonization chambers; and controlling a gas flow valve and an air flow valve in the target combustion chamber based on the temperature deviation degree of the target carbonization chamber. According to the invention, accurate adaptation and dynamic optimization of heating control of the coke oven to complex working conditions can be realized.

Provided is a method for producing a coal cake capable of achieving both improvement of strength of a coal cake and improvement of productivity. This method is for producing a coal cake in a stamp charge coke oven, the method being characterized in that the coal cake is obtained by stamping mixed coal C that is obtained by blending and mixing a carbon material A and a carbon material B so that the mass ratio of the carbon material B to 100 mass% of the carbon material A is 0.5-15 mass%, wherein the ratio of the carbon material A having a particle diameter of 0.5 mm or less is 50 mass% or less, the ratio of the carbon material A having a particle diameter of 0.1 mm or less is 20 mass% or less, the ratio of the carbon material B having a particle diameter of 0.5 mm or less is 80 mass% or more, and the ratio of the carbon material B having a particle diameter of 0.1 mm or less is 50 mass% or more.

The utility model discloses a coke oven raw gas negative pressure pipeline high-pressure ammonia water purging device, which comprises a high-pressure ammonia water pipeline, a splicing slot is arranged at the upper end of a support frame, the lower end of an expansion screw block is connected with the negative pressure pipeline, a nut is sleeved on the outer wall of the expansion screw block, an inspection hole is arranged at the upper end of the high-pressure ammonia water pipeline, and the inspection hole is communicated with the high-pressure ammonia water pipeline. And a threaded mounting block is spirally inserted into the edge of the upper end of the inspection opening. According to the coke oven raw gas negative-pressure pipeline high-pressure ammonia water purging device, four groups of high-pressure ammonia water valves, connecting sleeves and high-pressure ammonia water nozzles are distributed in parallel between the high-pressure ammonia water pipeline and the negative-pressure pipeline, multi-group spray washing is carried out, the cleaning effect is good, the extension pipeline and the connecting sleeves are adjusted in a telescopic mode, and the cleaning efficiency is improved. Therefore, the high-pressure ammonia water spray head can be driven to reset and turn over through the reset rotating shaft and the connecting pipe, the spray-washing angle can be adjusted, the connecting sleeve and the extending pipeline can be conveniently and rapidly inserted, disassembled and assembled with the negative pressure pipeline through the splicing inserting groove and the splicing inserting block, and replacement and use are convenient.

The invention relates to the technical field of computer fluid dynamics, in particular to a coke oven carbonization chamber numerical simulation model based on a CPFD method, which comprises the following steps: carrying out structural grid division to generate a computational domain grid for solving a carbonization process; setting physical property parameters, boundary conditions, initial conditions and chemical reaction kinetic parameters of the coal particles and the gas phase; a CPFD multiphase coupling model is constructed; solving the CPFD multiphase coupling model to obtain dynamic evolution data of pyrolysis gas flow, coupling heat transfer and chemical reaction processes in the carbonization chamber; and outputting simulation results of a temperature field, a pressure field, a gas component concentration field and coal pyrolysis product distribution in the carbonization chamber. The method has the advantages that the particle swarm is regarded as a quasi-continuous medium for statistical description, and the optimal balance is ingeniously obtained between the calculation efficiency and the calculation precision, so that full-size and high-fidelity numerical simulation of dense gas-solid two-phase flow and reaction process involving millions of particles in an industrial-scale coke oven carbonization chamber becomes possible.

The utility model relates to a system for reducing carbon dioxide emission in a coking production process. The system comprises a coke oven heating system, a flue gas desulfurization and denitrification system, a CO2 absorption and analysis system, a methanol synthesis system, a wind power / photovoltaic power generation system, an energy storage system, a water electrolysis hydrogen production system, a hydrogen storage system and a methanol storage system. According to the device, the emission of coke oven flue gas CO2 to the atmosphere can be effectively reduced, the CO2 in the coke oven flue gas can be captured and converted into a green methanol fuel, and the CO2 generated by combustion is not discharged when the green methanol fuel is used as a heating fuel of a coke oven, so that the cyclic utilization and green development of the CO2 are realized.

The utility model relates to the technical field of coke oven heating, in particular to a mixed gas heating single-hole combustion chamber temperature adjusting system which comprises adjusting units, one end of each adjusting unit is connected with a mixed heating gas main pipe, and the other end of each adjusting unit is connected with a corresponding waste gas shutter. And the mixed coal gas sequentially passes through the mixed heating coal gas main pipe, the corresponding adjusting unit, the corresponding waste gas opening and closing device and the corresponding heat storage chamber to enter the corresponding combustion chamber. The utility model has the advantages that: the original gas heating pipeline is improved, and the regulating valve is connected with the gas heating pipeline in parallel on the basis of not changing equipment (the equipment comprises the regulating cock, the pore plate box and the exchange cock) on the gas heating pipeline, so that the independence of manual regulation is ensured, and the gas heating pipeline is convenient to use. The furnace temperature adjusting effect of each combustion chamber during mixed gas heating is improved; and various pore plates with different diameters are arranged in the pore plate box, so that the requirement of manual adjustment can be met.

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

The utility model relates to a coke breeze treatment device for wet quenching of a coke oven, which comprises a clean water tank and a sedimentation tank, the clean water tank and the sedimentation tank are sequentially connected, two sides of the clean water tank and the sedimentation tank are provided with ditches, and the ditches are used for leading quenching water sprayed in a quenching tower back to the coke breeze sedimentation tank to form a closed loop, so as to complete the recycling of the quenching water. Concrete partition walls are arranged between the clean water tank and the sedimentation tank, between the ditches and the clean water tank and between the ditches and the sedimentation tank, openings are formed in the concrete partition walls, and water gates are arranged at the openings and connected with the control unit. The coke powder grabbing device has the advantages that the grabbing device walks on the track and grabs the coke powder of the settling pond and the clean water pond, the coke powder does not need to be cleaned manually, the operation environment of operators is improved, the labor intensity of the operators is reduced, the post of the coke powder grab bucket operator is canceled, manpower is saved, the enterprise cost is reduced, and the working efficiency is improved. Operators are prevented from being in contact with toxic and harmful substances, and the operation environment of the operators is improved.

The present invention belongs to the technical field of coking production, and in particular relates to a coke oven heating system adopting oxygen-enriched combustion. The coke oven heating system is characterized by comprising an oxygen producing unit, a coke oven heating unit, a flue gas treatment unit and a heat recovery unit, wherein an oxygen-deficient outlet of the oxygen producing unit is connected to the heat recovery unit, an oxygen-enriched outlet of the oxygen producing unit is connected to the coke oven heating unit, and a flue gas outlet of the coke oven heating unit is in communication with the flue gas treatment unit; the coke oven heating unit is connected to a fuel gas pipeline; and a return pipeline is further provided at a flue gas outlet of the coke oven heating unit and is connected to an air inlet of the oxygen producing unit. The present invention has the following beneficial effects: in the coke oven heating system, oxygen-enriched gas is used as the combustion-supporting gas of a coke oven, and main components of waste gas after combustion are carbon dioxide and water vapor which are both polar triatomic molecules having a relatively strong radiation capability, such that the radiation intensity in a combustion chamber of the coke oven can be increased, the radiation heat transfer efficiency in the combustion chamber is improved, and the coking time is shortened.

The utility model relates to an on-line adjustment coke oven temperature measuring device, which comprises a lens part, an oven cover, a connecting seat, connecting bolts and adjusting jackscrews, the connecting seat is composed of a sleeve and a base which are integrally connected, the base is embedded on the oven cover and is fixed through a plurality of connecting bolts, the base is screwed with a plurality of adjusting jackscrews, and the adjusting jackscrews are connected with the lens part. The adjusting jackscrew is connected with the furnace cover in an abutting mode, and the lens part is connected with the sleeve. Compared with the prior art, the utility model has the following beneficial effects: 1) the device can adjust and correct the acquisition aiming position on line at any time in the operation process, and improves the temperature measurement precision and stability; and 2) the structure is simplified, the size of the temperature measuring device is greatly reduced, the manufacturing cost is reduced, and the consumption of cooling purge gas is reduced at the same time. And 3) the height is optimized and reduced, so that the passing adaptability of equipment such as different furnace top carts and the like is better.

The invention relates to the technical field of dust treatment, in particular to coke screening building loading dust treatment equipment with a multi-stage dust suppression structure, which comprises a coke oven blanking shell, a conveying belt is mounted in the coke oven blanking shell, and a double-shaft servo motor for the conveying belt to work is mounted on the outer side of the coke oven blanking shell. A fixing plate is fixedly connected to the interior of the conveying belt through a driving roller, a driving block is fixedly connected to the external eccentric position of the fixing plate, a driving plate is slidably connected to the outer side of the fixing plate, and a sector gear is fixedly connected to the tail end of the driving plate. A swingable dry fog nozzle is arranged in a blanking shell of the coke oven to generate micron-sized dry fog particle condensed dust, and efficient suppression, directional collection and diffusion range control of dust are realized by combining multiple functions of a negative pressure dust collection system formed by airflow hedging and Bernoulli principles and a bottom telescopic shell and a dustproof plate; the working environment is obviously improved; the pollution is reduced.

The invention discloses a coke oven operation anomaly detection and early warning system based on video monitoring, relates to the technical field of coke oven safety production monitoring, and solves the technical problems of potential safety hazards such as untight oven door sealing and illegal personnel operation in the traditional coke oven production process in the prior art. A working area is obtained, the obstacle distance in the working area is obtained through radar scanning, and an infrared thermal imaging module monitors temperature distribution of the furnace body; after the edge calculation layer recognizes front-end sensor data, the furnace door hook state is analyzed through an improved target detection model, illegal actions of personnel are recognized through a posture estimation model, and a preprocessing result is transmitted to the data analysis layer; and the data analysis layer fuses and integrates vision, radar and positioning data, generates three-dimensional pose information of the furnace door through a multi-source fusion algorithm, performs abnormality diagnosis by combining a safety threshold value in a process rule base, and triggers an early warning signal of a corresponding level.

The invention relates to the technical field of monitoring control, in particular to a coke oven excess air coefficient control method and system based on real-time monitoring, and the method comprises the steps: collecting coke oven equipment data and thermal stress distribution through a sensor, obtaining time-varying sequence data of an excess air coefficient, carrying out frequency domain analysis, and determining a periodic model of the excess air coefficient; based on the periodic model and the real-time data, a future air excess coefficient sequence is predicted, when a prediction result is not in a reference range, the furnace body is divided into a plurality of areas according to real-time thermal stress distribution in the furnace body, the distance between each area and an air inlet and the corresponding air supply component are calculated, and the air supply rate is regulated and controlled according to the parameters. And after adjustment, thermal stress distribution and air excess coefficient sequence data are obtained again, whether air supply meets the requirement or not is judged, and if not, a corresponding adjustment strategy is obtained. The method can dynamically optimize the air supply of the coke oven, improve the combustion stability and ensure the coke production quality.

The travel carriage (1) travels on a travel surface in a travel region by means of a drive device (10). A traveling trolley (1) is provided with: a temperature measurement device (4) that measures the temperature of a measurement object; an image acquisition device (2) that acquires image information of the traveling surface; and a calculation device (3) that detects the measurement target on the basis of the image information. The calculation device (3) adjusts the position or orientation of the temperature measurement device (4) on the basis of the position of the measurement object detected from the image information.

The utility model belongs to the technical field of industrial energy conservation, and particularly relates to a coke oven flue gas waste heat recycling device which comprises a water tank. A water inlet is formed in the outer side of the water tank; a smoke exhaust pipe is fixedly connected to the interior of the water tank; a steam pipe is arranged on the top of the water tank close to the smoke exhaust pipe; one end of the steam pipe away from the water tank is fixedly connected with a smoke exhaust pipe; an intelligent alternate valve is mounted in the steam pipe; a threaded rotating column is rotationally connected to the interior of the smoke exhaust pipe; when waste heat is recovered through a boiler, a large amount of dust is carried in smoke of a coke oven, the dust is accumulated for a long time, so that a pipeline is possibly blocked, and the boiler cannot be normally used, so that the dust accumulated in the smoke exhaust pipe is cleaned through the back-and-forth movement of the cleaning scraper in the smoke exhaust pipe; the situation that the interior of the smoke exhaust pipe is blocked due to dust accumulation is greatly reduced, and the service life of the smoke exhaust pipe is prolonged.

The utility model relates to a fixed rotary transfer platform for coke oven mechanical maintenance, which is positioned at the end part of a coke oven mechanical track and arranged in a circular pit, a rotary support is arranged at the lower end of a transfer platform body, an annular walking track and the rotary support are positioned on the same central shaft, and a driving wheel and a vehicle-mounted winch are arranged at the end part of the transfer platform body. The walking driving device is used for driving the driving wheel so that the transfer platform can rotate forwards and reversely with the center shaft as the circle center. The transfer platform has the advantages that the transfer platform is arranged in the circular pit at the end part of the coke oven machinery track, adopts the rotary support, can rotate in positive and negative directions along the track positioned on the circular perimeter in the pit, and conveys the coke oven machinery to a selected position at any angle by taking the rotary center as a circle center; and the parking lines are connected with a plurality of maintenance parking lines at selected positions and are locked by mechanical locking devices at the selected positions, so that the device is suitable for complex terrains, the parking lines can pass through roads, the road passing is not influenced, and the occupied land is saved.

The invention relates to the technical field of coking industry, in particular to a coke oven gas collecting pipe pressure control method based on multivariable constraint optimization, which comprises the following steps: collecting, screening and preprocessing historical operation data of a coke oven gas collecting pipe system under different operation conditions; designing a multivariable nonlinear constraint optimization control algorithm; introducing a constraint reflecting the actual operation of a coke oven system into a nonlinear constraint optimization problem, and adding penalty terms for a control input constraint and a gas collector pressure constraint into an optimization objective function; and at the beginning of each control period, acquiring key parameters of the coke oven system in real time, and performing prediction calculation on the key parameters of the coke oven system through the NARX neural network model. The method has the advantages that the generated data set can be ensured to comprehensively cover the states of the coke oven gas collecting pipe system in various actual operation scenes, so that the subsequently trained NARX neural network model can fully learn dynamic behavior modes of the system under different working conditions.

The utility model relates to the technical field of coke oven heating, in particular to a coke oven gas heating combustion chamber temperature control device, which is characterized in that a gas header pipe adjusting unit is arranged at the front end of a single-hole combustion chamber adjusting unit and is connected with a coke oven gas main pipe, and each single-hole combustion chamber adjusting unit is connected with the coke oven gas main pipe; the output end of each single-hole combustion chamber adjusting unit is connected with the corresponding combustion chamber. And the gas main pipe adjusting unit comprises an adjusting valve C, a flow meter and a pressure transmitter, and the adjusting valve C, the flow meter and the pressure transmitter are sequentially arranged on the coke oven gas main pipe. The utility model has the advantages that: the regulating valve and the bypass regulating valve can completely replace the function of a pore plate box, so that the risk that a worker works in a dangerous area such as a gas basement is reduced; the loop A of the first adjusting branch pipe and the loop B of the second adjusting branch pipe are standby for each other, when one loop breaks down, the loop can be switched to the standby loop at any time, and the flow stability of heating gas is improved.

The VOCs waste gas treatment device comprises a gas inlet pipe, a gas exhaust pipe, a first heat storage chamber, a second heat storage chamber and a combustion chamber, a plurality of supporting plates are arranged in the first heat storage chamber and the second heat storage chamber, a plurality of ventilation grooves are formed in the supporting plates, heat storage ceramics are arranged on the ventilation grooves, and the heat storage ceramics are arranged in the combustion chamber. First adjusting boxes are arranged on one side of the first heat storage chamber and one side of the second heat storage chamber, a plurality of first adjusting plates are arranged in the first adjusting boxes, first push plates are arranged in the first adjusting boxes, second adjusting boxes are arranged on the other side of the first heat storage chamber and the other side of the second heat storage chamber, a plurality of second adjusting plates are arranged in the second adjusting boxes, and second push plates are arranged in the second adjusting boxes. According to the design of the heat storage chamber and the combustion chamber, the mode of heat storage and heat release of heat storage ceramics can be utilized, waste heat of combustion is recycled, newly-entering waste gas is automatically heated, waste gas treatment is achieved, meanwhile, fuel needed in the waste gas heating process is reduced, and energy conservation, emission reduction, carbon reduction and efficiency improvement are achieved.

The invention relates to the technical field of coke oven operation control, in particular to an expansion pressure detection method applied to an electric heating coke oven, which comprises the following steps: dividing coking stages based on coal state change in a historical coking period of the electric heating coke oven, and setting a reference acquisition frequency for each coking stage; for each coking stage, real-time data acquisition is carried out based on the reference acquisition frequency, and expansion pressure detection data is obtained; performing pressure anomaly calculation on the expansion pressure detection data to obtain an expansion pressure change rate and an expansion pressure distribution characteristic; correcting the reference acquisition frequency according to the reference acquisition frequency to obtain a dynamic acquisition frequency corresponding to the coking stage; and generating expansion pressure detection alarm information in response to the condition that at least one of the expansion pressure detection data, the change rate, the distribution characteristic and the dynamic acquisition frequency exceeds a corresponding preset warning threshold value. Acquisition frequency can be dynamically adjusted along with coal expansion characteristics, timeliness of pressure peak capture is guaranteed, and redundant data in a stable stage is reduced.

The invention relates to a double-coal-blending tamping coking method for a heat recovery coke oven, which is characterized in that a coal cake of the heat recovery coke oven is in a tamping form, a coal charging and coke pushing car works on a coke oven machine side track, and blended bulk coal falls into a coal box consisting of a ground coal wall, a front baffle plate, an on-car coal charging bottom plate, a rear baffle plate and the like through a coal distribution device of a hydraulic tamping station; the bulk coal is tamped into a coal cake by a coal pressing device of the hydraulic tamping station, and the coal cake is dragged back to a coal charging car by a coal charging bottom plate; and the coke is pushed into a quenching car from the carbonization chamber by using a coke pushing rod, a coal cake is fed into the carbonization chamber by using a coal loading bottom plate, and the furnace door is closed after the coal loading bottom plate is drawn out. The invention ensures the stability of the quality of the produced coke, realizes that the performance of the coke product meets the requirements of a blast furnace, reduces the use amount of high-cost blended coal, avoids resource waste, and reduces the cost and increases the efficiency.

The invention discloses an automatic heating control system for a coke oven, and particularly relates to the technical field of coke oven control, and the system comprises a raw gas temperature measurement module which is used for obtaining real-time temperature data of raw gas in a coke oven system; the vertical flue temperature module is used for acquiring temperature data in a vertical flue; the coal gas flow control unit is used for automatically adjusting the heating coal gas flow according to the temperature data in the vertical flue; the branch flue control unit is used for controlling the suction force in the branch flue according to the flow of the heating coal gas; and the multi-mode fuzzy control unit is used for controlling the temperature in the coke oven by using multi-mode fuzzy control according to the vertical flue temperature data and the raw gas temperature data. According to the invention, the temperature data in the coke oven is fully automatically acquired and captured, so that the temperature in the coke oven can be effectively controlled, automatically collected and automatically adjusted, the temperature fluctuation in the coke oven is small, the temperature is more stable, the timeliness and accuracy of the temperature management of the coke oven are improved, and the labor intensity of workers is reduced.

The present invention discloses a combined control method for automatically balancing the pressure of multiple coke oven gases, comprising the following steps: connecting to the pressure measurement points of each gas source and the usage measurement points of each gas user in the original DCS system of the power plant, and remotely controlling the gas release regulating valves of each gas source; measuring the pressure values, target deviation values, and gas usage values ​​of each gas user at each gas source pressure measurement point; comparing the gas pressure target values ​​set by each gas user with the measured gas pressure values, target deviation values, gas usage values, and average gas flow values ​​of each gas user; and outputting different control instructions for the gas release regulating valves of each gas source through a combined calculation method. The combined control method for automatically balancing the pressure of multiple coke oven gases of the present invention has the advantages of automatically adjusting the gas pressure, timely and accurately adjusting the gas pressure of each coking plant, uniformly regulating the pressure, and preventing the backflow of low-pressure incoming gas.

The invention provides a high-precision maintenance method for a coal supporting plate of a tamping coke oven coal charging car, and relates to the technical field of coke oven equipment maintenance, and the high-precision maintenance method comprises the following steps: S1, pretreatment of new and old plates: removing an oxide layer and pollutants on a contact surface of an upper-layer old plate and a lower-layer new plate; s2, drilling and positioning: temporarily fixing the new plate and the old plate through interval spot welding and then synchronously drilling; step S3; the coal supporting plate is cut into a wear section and a reserved section, and a new plate is welded after the wear section is removed; s4, thermal anchoring is conducted, specifically, the rivet is heated, the pose of the coal supporting plate is adjusted, and then riveting is completed; and S5, quality closed-loop detection: carrying out nondestructive detection and vibration stability verification on welding and riveting parts. According to the process, new and old plates are forcibly aligned through a dynamic drilling technology and spot welding, the datum plane deviation is eliminated, and meanwhile, modular segmented replacement is utilized, an undamaged structure is reserved through selective cutting, further thermodynamic synergistic anchoring is conducted, and rivet heating and mechanical leveling cooperate to improve the connection strength.

The invention relates to an efficient combustion control method for a coke oven waste gas denitration hot blast stove. The method comprises the steps of ignition, air-fuel ratio measurement, air-fuel ratio maintenance and the like. According to the efficient combustion control method for the coke oven waste gas denitration hot-blast stove, the actual air-fuel ratio of air to fuel gas can be measured before combustion of the hot-blast stove, and the combustion efficiency of the hot-blast stove is improved; the gas content in the pipeline can be monitored, and the gas explosion hidden danger is eliminated; by quantifying the circulating gas flow, large changes of parameters such as system temperature are avoided, and stable operation of the system is achieved; finally, the heated waste gas flow is used as a variable for automatic temperature adjustment, and the efficiency of the denitration system is improved.

The utility model relates to a weight lifting device of a coke oven heating exchange system, which comprises a chain and a locking device, one end of the chain is connected with a transmission device of the coke oven heating exchange system, and the other end of the chain is connected with a waste gas weight and an air door through the locking device; the locking device is composed of a locking ring and a locking ring. The opening of the locking ring is locked and connected through matching of threads and a locking nut; the locking ring is arranged in the locking ring, and an opening of the locking ring can be sealed through the movable ring body. A traditional shackle type connection mode is improved into a double-insurance structure composed of the locking ring and the locking ring, the weight falling prevention function can be effectively achieved, the chain clamping condition during weight lifting can be effectively prevented, the accident rate of weight falling and clamping of the exchange transmission device in the heating process of the coke oven is greatly reduced, and the service life of the exchange transmission device is prolonged. The production safety is improved, and the smooth production of the coke oven is ensured.

The utility model relates to the technical field of coke oven heating, in particular to a mixed gas heating single-hole combustion chamber temperature adjusting device, which is characterized in that the input end of each heating gas unit and the input end of each adjusting unit are respectively connected with a mixed heating gas main pipe, and the output end of each heating gas unit is connected with a corresponding waste gas shutter; the first output end and the second output end of each adjusting unit are connected with the output ends of the adjacent coal gas heating units respectively, and the adjusting units are arranged on the corresponding adjusting coal gas pipelines. The utility model has the advantages that the plug valve A and the plug valve B can be automatically switched in adjacent switching periods by utilizing the switching transmission brace of the existing switch without additionally arranging a transmission device, so that the cost is saved; the plug valves A and B and the exchange plug cocks A and B are located at the same horizontal height, the crank lengths of the cranks A and B and the exchange plug cocks A and B are the same, it is guaranteed that the plug valves A and B and the exchange plug cocks A and B achieve full opening and full closing at the same time, the structure is simple, and implementation is easy.