1512 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.

The invention discloses a precise ammonia spraying control method and system suitable for coke oven flue gas denitration, and the method comprises the steps: collecting historical data and real-time data of coke oven flue gas flow and NOx concentration, carrying out the modeling of the collected historical data of the flue gas flow and NOx concentration through a time series prediction algorithm, and carrying out the calculation of the model; the flue gas flow and the NOx emission value in a period of time in the future are predicted, the corresponding ammonia spraying amount is calculated based on the flue gas flow and the NOx emission value predicted by the model, the system monitors the actual NOx emission value in real time and compares the actual NOx emission value with the predicted value, and if obvious deviation exists, the ammonia spraying amount is determined. If yes, the prediction model is corrected in the next period, the calculated ammonia spraying amount data is transmitted to a denitration master control system, the denitration master control system automatically adjusts an ammonia supply valve, if the denitration precise ammonia spraying control system breaks down, an alarm is triggered immediately, the mode is automatically switched to a manual control mode, and the manual control mode is switched to a manual control mode. Accurate control and stability of total ammonia regulation of the denitration system are realized.

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 a method for synthesizing a high-value product by using refinery furnace gas, which comprises the following steps: purifying refinery crude furnace gas, feeding the purified refinery crude furnace gas into a chemical looping three-stage normal-pressure reactor, respectively obtaining near-pure carbon dioxide, nitrogen and hydrogen products in each stage of flow, and adjusting a gas framework by using the near-pure hydrogen product obtained by reforming coke oven gas as a supplementary hydrogen source, after reaching the standard of the mixed raw material, pressurizing and feeding into a synthesizer, and carrying out gas-liquid separation to obtain a methanol or ammonia product. The method solves the problem that carbon dioxide and nitrogen cannot be utilized when the traditional refinery furnace gas replaces coal-based carbon monoxide to synthesize high-value products through chemical carbonylation; part of coke oven process tail end product coke oven gas is consumed, and the defect that a cheap hydrogen source needs to be supplemented due to unmatched raw material structures in the technological process is overcome; and the tail gas and low-grade heat recycling process in each stage of production process is also optimized, and near-zero emission in the life cycle and gradient utilization of chemical energy are realized.

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 relates to a method for measuring an alignment address of a coke oven railway vehicle, which comprises the following steps of: installing a reading head on the railway vehicle, and arranging a coding plate at a corresponding position of a coke oven beside a rail; the coding plate is provided with a plurality of coding holes, and the reading head is provided with decoding switches in one-to-one correspondence with the coding holes; the reading head is also provided with a left displacement grating ruler and a right displacement grating ruler. According to the method for measuring the alignment address of the coke oven railway vehicle provided by the invention, the oven number data of each coding plate can be reliably read by four carts of the coke oven, and high-speed safe running and low-speed high-precision alignment are carried out; the equipment structure of the address identification system is simplified, and the reliability of the equipment is improved; the address decoding technology can be compatible with an existing coke oven cart coding plate, the coding plate does not need to be installed again, and the repeated investment of equipment is reduced; basic conditions are provided for realizing automatic alignment of the coke oven four-cart system and improving the production efficiency of the coke oven.

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 which is for producing a coal cake and by which the strength of a coal cake can be improved without using a caking binder. A method for producing a coal cake according to the present invention is a method for producing a coal cake in a stamp charge-type coke oven, and is characterized in that fibers having a length of 1.0-200 mm and a length-to-diameter ratio of at least 10 are added to and mixed with a raw material of a powdery coal cake, and the obtained fiber-mixed raw material is stamped to obtain a coal cake.

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 discloses a recycling pretreatment structure applied to coke oven tail gas treatment. The recycling pretreatment structure comprises a spraying tower barrel, a supporting base is arranged at the bottom of the spraying tower barrel, a water overflow guide frame is arranged in the spraying tower barrel, a condensed coke separation tower barrel is arranged at the top of the spraying tower barrel, the top of the water overflow guide frame is sleeved with multiple sets of scraping frames, and a filter screen ring is arranged at the bottom of the water overflow guide frame; through the design of the arc-shaped groove, the spraying mist disc, the condensation spiral ring and the like, primary treatment, deep treatment and three-time treatment are achieved, the tail gas purification quality is progressively guaranteed layer by layer, tar is effectively separated and extracted and recycled through an oil conveying pipeline, and the economic benefit and the environmental protection value are improved; the smoke pressure is used for pushing the impeller to rotate and driving related parts to be linked, energy consumption is reduced, a standby motor is arranged, modes can be switched according to needs, working conditions can be flexibly adapted, stable operation of equipment is guaranteed, and cost is reduced.

The invention provides a coke oven column deformation monitoring method and system, and relates to the technical field of coke oven measurement, and the coke oven column deformation monitoring method comprises the following steps: obtaining an image sequence of a marked area in the side surface of an oven column; gray processing is carried out on the image sequence to obtain a gray image sequence, and the gray image sequence comprises a plurality of gray images arranged according to a time sequence; selecting the same region as a target sub-region in each grayscale image, wherein the target sub-region has a plurality of adjacent sub-regions adjacent to the target sub-region; whether the furnace column is deformed or not is judged according to the gray value of the target sub-region in an initial gray image and the gray value of the target sub-region in a subsequent gray image, and the initial gray image is the first gray image in the gray image sequence. According to the invention, the deformation measurement precision of the coke oven column is improved, and the operation is simple.

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.

A coke oven includes an oven chamber, an uptake duct in fluid communication with the oven chamber, the uptake duct being configured to receive exhaust gases from the oven chamber, an uptake damper in fluid communication with the uptake duct, the uptake damper being positioned at any one of multiple positions, the uptake damper configured to control an oven draft, an actuator configured to alter the position of the uptake damper between the positions in response to a position instruction, a sensor configured to detect an operating condition of the coke oven, wherein the sensor includes one of a draft sensor, a temperature sensor configured to detect an uptake duct temperature or a sole flue temperature, and an oxygen sensor, and a controller being configured to provide the position instruction to the actuator in response to the operating condition detected by the sensor.

The invention provides a metallurgical bio-coke preparation system and method based on bio-oil graded utilization. The system comprises a first pyrolyzing furnace, a cyclone separator, a first condensing device, a second condensing device, a pickling device, a granulating device, a first conveyor, a second pyrolyzing furnace, a coke oven and a second conveyor, an outlet of the first pyrolyzing furnace is connected to an inlet of the cyclone separator, and a solid phase sequentially passes through the cyclone separator, the pickling device, the granulating device, the first conveyor, the second pyrolyzing furnace, the coke oven and the second conveyor; a gas phase and a liquid phase sequentially pass through the cyclone separator and the condensing devices, a heavy oil outlet of the first condensing device is connected to the granulating device, and a light oil outlet of the second condensing device is connected to the pickling device. According to the system and the method, through graded utilization of the bio-oil, the characteristics of the metallurgical bio-coke are autonomously regulated and controlled, the utilization rate of biomass is increased, and meanwhile extra cost and risks caused by a supply chain are avoided.

The invention discloses a coke oven height-direction heating control method, and relates to the technical field of coke oven heating combustion control, and the specific implementation scheme is as follows: constructing a physical model of a vertical flue in a combustion chamber of a coke oven under different simulation working conditions; simulating combustion states of air and fuel gas in each physical model by adopting a mathematical model; based on the combustion state, determining an index value of each physical model in the aspect of high-direction heating uniformity; and determining a target working condition based on the index values of all the physical models. And a reliable basis is provided for the design of the vertical flue of the coke oven.

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 discloses an oven number identification device for a coke oven vehicle, and relates to the technical field of identification devices, in particular to the oven number identification device for the coke oven vehicle, which comprises a mounting plate and an oven number identification instrument, an adjusting box and a cavity block are respectively mounted in the front of the mounting plate, and a servo motor and a storage battery are respectively mounted in the adjusting box. According to the oven number recognition device for the coke oven vehicle, through the arrangement of the servo motor, the disc, the first sliding block, a round rod, a cleaning brush, a gear, a rack rod, a connecting rod and a T-shaped sliding block, the oven number recognition device for the coke oven vehicle has the effects that dust and rainwater on the oven number recognition instrument can be conveniently cleaned, and the influence on oven number recognition is avoided; the gear can be conveniently driven to rotate forwards and backwards within a certain range, the cleaning brush can conveniently swing back and forth to clean dust and rainwater on the furnace number recognition instrument, the furnace number recognition accuracy is improved, and the purpose of improving practicability is achieved.

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 invention discloses a device for treating tar residue in ammonia water, which comprises a pre-separator, a separation tank, a press pump, a delivery pump and a super centrifuge, a raw material inlet of the pre-separator is connected with a gas-liquid separator, and a tar ammonia water outlet is connected with a feed inlet of the separation tank through a tar residue filter screen; a feed port of the squeezing pump is connected with a bottom outlet of the pre-separator, and a discharge port of the squeezing pump is connected with a top inlet of the pre-separator; an ammonia water outlet of the separation tank is connected with a coke oven raw gas cooling device through an ammonia water circulating pump, and a tar residue outlet is connected with a feeding hole of the super centrifuge through a conveying pump; a tar outlet of the super centrifuge is connected with a tar intermediate tank, an ammonia water outlet is connected with a waste liquid tank, a tar residue outlet is connected with a tar residue buffer tank, and the tar residue buffer tank is connected with a coal tower through a hydraulic plunger pump. The floor is of a closed structure, leakage of tar, water and harmful peculiar smell gas can be prevented, environmental pollution is eliminated, the floor cleaning workload is reduced, and the body health of workers is guaranteed.

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 invention relates to a large-proportion long flame coal blending coking method, and belongs to the technical field of coal blending coking production. Comprising the following steps: S1, burdening: preparing coal blending raw materials according to the following mass ratio: 30-40 parts of prime coking coal, 10-15 parts of 1 / 3 coking coal, 10-15 parts of lean coal, 15-22 parts of fat coal, 0-5 parts of gas-fat coal and 10-20 parts of long flame coal; s2, performing primary crushing on the long flame coal; s3, blending coal in a batching bin; s4, performing secondary crushing on the mixed materials; s5, coking: feeding the mixed coal obtained in S4 into a coal storage tower, conveying the mixed coal to a tamping, coaling and coke pushing all-in-one machine through a belt for tamping and forming, loading the mixed coal into a carbonization chamber for coking, after coke is mature, loading red coke into a dry quenching furnace for sensible heat recovery, discharging the red coke out of the dry quenching furnace, and conveying the red coke to a coke bin for storage. The proportion of the long flame coal in the large industrial coke oven is creatively and greatly increased, and the technical problems that in the prior art, the coal blending proportion of the long flame coal is low, and the coking coal blending cost is high are solved.

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 discloses a coke powder gasification device for a coke oven, which comprises the coke oven, a conveying pipeline is arranged on a water seal seat at the top of the coke oven, a storage hopper and a mixer are arranged at the top of the coke oven, the bottom of the storage hopper is connected with the mixer through a coke powder pipeline, and the mixer is also connected with a steam pipeline and a compressed air pipeline. And a feeding hole of the mixer is connected with the conveying pipeline. The invention also provides a test system for coke powder gasification of the coke oven, which is used for detecting coal gas after gasification of the coke oven. The invention also provides a process for gasifying coke powder by using the coke oven, which specifically comprises the following steps: mixing coke powder, steam, compressed air or oxygen according to the ratio of 1: (5-10): (0.1-1.5), blowing the mixed coke powder into the top space of a coke oven carbonization chamber by using the pressure of the steam and the compressed air, and gasifying the coke powder by using the coke oven at the temperature of 750-850 DEG C in the top space at the final stage of coking, the carbon element in the coke powder reacts with the water vapor and the oxygen to generate hydrogen and carbon monoxide gas. The method is low in cost and simple to operate.

The invention belongs to the field of coal chemical industry purification, and particularly relates to an ultrahigh-precision conversion absorption type dechlorination purifying agent and a preparation method thereof. Wherein the dechlorination purifying agent is prepared from the following components in percentage by weight: 5%-30% of Fe2O3, 1%-10% of CuO, 10%-30% of ZrO2, 20%-40% of Al2O3, 10%-20% of ZnO and the balance of auxiliaries. The preparation method comprises the following steps: preparing ferric nitrate, copper nitrate, zirconium nitrate, aluminum nitrate and zinc nitrate into a solution, carrying out co-precipitation by using alkali liquor as a precipitator, washing, drying and calcining the obtained material to obtain a precursor, dipping the precursor powder with ammonium dihydrogen phosphate or phosphoric acid, drying and calcining, and carrying out compression molding. The dechlorination purifying agent can reduce the total amount of organic chlorine and inorganic chlorine in raw gas such as raw coke oven gas, coke oven gas, natural gas and gaseous hydrocarbon to 0.01 ppm or below, has the capacity of converting and absorbing organic chlorine, and meanwhile has extremely high dechlorination precision.

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.