421 results about "Coke burner" patented technology

The invention discloses a masonry robot virtual-real cooperative control method and system based on digital twinning, and aims to realize high-precision and high-safety automatic masonry of a coke oven by a robot. The method comprises the following steps: firstly, constructing a digital twin system of a masonry robot, and setting a masonry robot entity industrial control process: firstly, conveying refractory bricks to a specified photographing position by a brick conveying platform, and then photographing and identifying by a truss clamping jaw; the truss clamping jaw moves to a refractory brick grabbing position for grabbing, and meanwhile, the mechanical arm with the slurry pipe is used for spraying slurry; and after the movable truss moves to the refractory brick placement position, accurate placement is identified. In the virtual-real cooperative control process, the virtual entity model is updated in real time through state information acquired by a sensor of a real system; making and optimizing a control strategy in the virtual environment; and real-time decision making is carried out by utilizing the virtual entity model, so that the operation of the physical entity is adjusted.

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 invention provides a collision detection method and device for a claying mechanical arm, and relates to the technical field of coke oven slurry smearing robots, and the method comprises the following steps: S1, obtaining a movement environment data set, and calculating according to the movement environment data set to obtain a modeling parameter set of the claying mechanical arm and a wall body; s2, a modeling parameter and dynamic radius mapping table is obtained, envelope modeling is conducted on the claying mechanical arm and the wall according to the modeling parameter and dynamic radius mapping table and the modeling parameter set, and a bounding box set is obtained; the type of the bounding box comprises a sphere bounding box and a capsule bounding box; s3, selecting two bounding boxes from the bounding box set according to a preset sequence; if the two bounding boxes are both spherical bounding boxes, first-class collision detection is carried out on the two bounding boxes; if one of the two bounding boxes is a sphere bounding box and the other one is a capsule bounding box, carrying out second-class collision detection on the two bounding boxes; if the two bounding boxes are capsule bounding boxes, carrying out third-class collision detection on the two bounding boxes; obtaining a collision detection result; and S4, operation of the claying mechanical arm is controlled according to the collision detection result. By setting three different types of collision detection, high-precision real-time collision detection of the claying mechanical arm is realized on the premise of not increasing hardware complexity, and the safety and reliability of claying operation are remarkably improved.

The invention provides a locomotive driving risk prediction method and system, electronic equipment and a storage medium, and belongs to the field of equipment safety, the method comprises the following steps: obtaining first data, second data and third data, the first data being point cloud data collected by a laser radar on a locomotive, and the second data being point cloud data collected by a laser radar on the locomotive; the second data and the third data are driver images collected by an external camera and a cab camera on the locomotive respectively; performing feature extraction on the first data to obtain a first feature data set; performing feature extraction on the second data to obtain a second feature data set; performing feature extraction on the third data to obtain driver behavior sign data; obtaining a third feature data set related to the driving risk of the coke oven locomotive based on the first feature data set and the second feature data set; and inputting the third feature data set and the driver behavior sign data into a risk early warning model to obtain a driving risk prediction result of the coke oven locomotive. The operation safety and reliability of the locomotive can be improved, and support is provided for intelligent operation.

The invention belongs to the technical field of dry quenching, and particularly relates to a dry quenching RTO accurate control system and method based on a Transform model, and the system comprises a data collection module, a time sequence prediction module, an RTO real-time optimization algorithm module, an edge calculation module and an anomaly detection and alarm module. The method comprises the following steps: firstly, acquiring data in a dry quenching furnace in real time by a data acquisition module, and predicting a key parameter change trend in a dry quenching process by a time sequence prediction module in combination with historical data and real-time data; the RTO real-time optimization algorithm module dynamically adjusts system state parameters according to a prediction result; the anomaly detection module compares the prediction data with the actual data and gives out early warning in time; and an optimization result is issued to the PLC control system in real time through the edge calculation module. Through modular design, the coupling complexity of the dry quenching system and data acquisition, prediction, optimization, control and other modules is reduced, and the energy utilization efficiency is improved by dynamically adjusting the control strategy.

The invention belongs to the technical field of coke oven masonry, and particularly discloses a brick surface targeted slurry laying system and method based on a robot. Comprising a robot; the slurry laying module comprises a feeding unit and a discharging port connected with the feeding unit, the feeding unit is used for conveying slurry with specified pressure to the discharging port, and the discharging port is clamped at the tail end of a robot; the visual module is used for acquiring visual information of the robot, the discharge port and the coke oven masonry; and the control module is used for planning a motion track of the robot according to the visual information, calculating an angle error and a position error of the robot according to an expected pose of the discharge port, and compensating a joint angle and a joint position of the robot according to the angle error and the position error. And the robot drives the discharge port to perform accurate laying on the specified brick surface according to the preset motion trail. According to the invention, multi-face brick directional laying can be realized, and the slurry laying precision and efficiency are high.

The invention provides an intelligent control method and system for pressure of a gas collecting pipe of a coke oven, and particularly relates to the technical field of automatic control of the coking production process. According to the method, a coke oven gas collector pressure measured value and an air blower rear pressure value are obtained in real time, and the gas collector pressure change rate is calculated accordingly. When the pressure change rate exceeds a set threshold value, a feed-forward control amount for adjusting the blower speed or the backflow flap opening degree is generated based on the pressure change rate. Meanwhile, the front suction value of the primary cooler is obtained, and feedback control quantity is generated through a feedback control algorithm according to the deviation between the front suction value and the suction set value. And superposing the feedforward control quantity and the feedback control quantity to generate a final control instruction, and adjusting the rotating speed of an air blower or the opening degree of a backflow turning plate according to the final control instruction, so that the measured pressure value of the gas collecting pipe tends to a target pressure set value. According to the method, control delay caused by medium flowing is eliminated, instant and advanced adjustment is achieved, and the problem that control response is not timely is solved.

The utility model relates to the technical field of coke oven heating, in particular to an economical single-hole combustion chamber temperature adjusting device, which is characterized in that the input end of each heating gas unit I and the input end of each heating gas unit II are respectively connected with a heating gas main pipe; the output end of each first coal gas heating unit and the output end of each second coal gas heating unit are connected with the corresponding combustion chamber, one end of each adjusting unit is connected with the corresponding first coal gas heating unit, and the other end of each adjusting unit is connected with the corresponding second coal gas heating unit. The utility model has the advantages that the structure realizes the communication of the two heating gas main pipes, one regulating valve can be adopted to complete the flow regulation of the two gas heating pipes in the same combustion chamber, and the on-line maintenance and manual regulation are realized by changing the opening position of the T-shaped plug valve; the regulating valve is connected with the stop valve through the three-way connector, it is guaranteed that the regulating valve can be detached at any time when breaking down, and normal production is not affected.

The invention relates to the technical field of brick machines, and discloses an extrusion forming device suitable for coke oven glazed bricks, which comprises a feeding mechanism and a forming mechanism, the forming mechanism comprises a forming die, a hydraulic assembly used for extruding and forming raw materials and an ejection assembly used for ejecting brick bodies formed through extrusion. The forming die is provided with a plurality of side-by-side vertically-through forming groove bodies. According to the extrusion forming device for the glazed bricks of the coke oven, through the unique design of the filler assembly, the problems that powder raw materials are prone to accumulation, adhesion, uneven distribution and the like in the automatic filling process are systematically solved; the partition bodies are arranged in the filling hopper, so that the raw materials are accurately and directionally filled into a plurality of parallel forming groove bodies, the consistency and accuracy of the filling amount of each brick body are fundamentally ensured, and the sizes and the densities of finished bricks are uniform as much as possible.

The utility model relates to a blow-off flash steam recovery system for a heat recovery coke oven waste heat boiler, which is characterized in that heat recovery boilers are provided with heat recovery boiler drums, the bottoms of the heat recovery boilers are provided with heat recovery boiler blow-off pipes, and sewage outlets of the heat recovery boiler drums are connected with sewage inlets II of corresponding blow-off flash tanks through pipelines II; a blow-off pipe of the heat recovery boiler is connected with a first sewage inlet of the corresponding blow-off flash tank through a first pipeline, the top end of each blow-off flash tank is connected with an inlet of the steam compressor unit through a third pipeline, and an outlet of the steam compressor unit is connected with the low-pressure steam pipe network through a fourth pipeline. The heat recovery system has the advantages that pollution discharge flash steam of all the heat recovery boilers is recovered through the header pipe, the number of devices is reduced, and investment optimization and operation maintenance of the devices are facilitated; the steam compressor unit sucks flash steam, the flash steam is compressed and boosted to low-pressure steam, the low-pressure steam is connected to a low-pressure steam pipe network through an outlet pipeline of the steam compressor, and white steam caused by blow-off steam diffusion is avoided.

The invention relates to a bracket structure for a chute area of a dry quenching furnace. The bracket structure is formed by building a plurality of layers of bracket bricks; and a plurality of supporting pieces are arranged between every two adjacent layers of bracket bricks, the supporting pieces are hard supporting pieces, the thickness of the supporting pieces is the same as that of mortar joints, the top faces of the supporting pieces make direct contact with the upper layer of bracket bricks, and the bottom faces of the supporting pieces make direct contact with the lower layer of bracket bricks. The supporting pieces are placed in the refractory mortar joints between the bracket brick layers, so that the problems of sinking of the annular air duct and cracking of the chute partition wall caused by deformation of the bracket mortar joints and inaccurate bracket elevation control are effectively prevented, the masonry quality of the dry quenching furnace is improved, and the service life of the dry quenching furnace is prolonged.

The invention discloses a coke oven combustion chamber vertical flue module based on a pouring process and a construction method, the module comprises a first assembly module which comprises a first module main body (1), a partition wall module (2) and a separation layer (5), and a second assembly module which comprises a second module main body (16), a partition wall module (2), a separation layer (5) and an adjustable template for pouring the assembly modules, the adjustable template comprises a positive and negative thread supporting device (6), a wooden wedge (7), a U-shaped clamp (8), an outer die (9), a hole channel core die (10), a first arc groove die (11), a second arc groove die (12), a stepped caulking template (13), an inner die (14) and a bottom die (15), the adjustable template is made of a high-strength metal material, and the adjustable template with enough rigidity and stability is accurately erected according to the actual size of a combustion chamber. According to the module and the construction method, the repairing efficiency, stability and safety of the coke oven combustion chamber are remarkably improved.

The invention relates to a dry quenching tail gas purification chemical engineering control method. The method comprises the following steps: step 1, carrying out grinding and conveying by a grinding and conveying system; step 2, controlling flue gas; step 3, carrying out desulfurization treatment on tail gas; according to the scheme, sodium bicarbonate powder and SO2 in coke oven dry quenching tail gas react, and the problems that in the dry quenching tail gas purification process, the flue gas temperature is unstable, the given amount of sodium bicarbonate fluctuates, and the recycling controllability of solid waste in a bag-type dust collector is not high are solved. And finally, the components of the dry quenching tail gas meet the requirement of environment-friendly emission.

The invention discloses a method for producing ethanol from methanol / dimethyl ether by a one-step method, which comprises the following steps of: reacting carbon dioxide / carbon monoxide and hydrogen-rich gas with at least one reaction substrate selected from methanol, dimethyl ether and a mixture thereof in a reaction solvent containing a catalyst to generate a reaction product containing ethanol; performing gas-liquid separation on the reaction product through flash evaporation to obtain a volatile phase containing ethanol and the like and a non-volatile phase containing a catalyst and a reaction solvent; condensing the volatile phase to obtain a gas mixture and a liquid mixture containing ethanol and the like, and rectifying the obtained liquid mixture to obtain purified ethanol. The hydrogen-rich gas comprises coke-oven gas, synthesis gas, hydrogen and a mixture of the coke-oven gas, the synthesis gas and the hydrogen.

The invention relates to the technical field of temperature monitoring, in particular to a hearth temperature monitoring device of a heating furnace for waste mineral oil recycling, which comprises a furnace body and a chimney, a burner and a furnace tube are arranged in the furnace body, and the burner is used for heating waste mineral oil in the furnace tube; a movable detection mechanism for monitoring the temperature of the furnace tube is arranged in the furnace body; the movable detection mechanism comprises a movable detection frame arranged outside the furnace tube, the movable detection frame is installed in the hearth through a lifting screw and a guide rod, one end of the lifting screw is fixedly connected with a lifting motor installed outside the furnace body, and the lifting motor is used for driving the movable detection frame to move up and down along the lifting screw and the guide rod. The device has the characteristics of omnibearing and accurate temperature detection, oil product coking prevention and furnace tube damage prevention, and solves the problems that an existing hearth temperature monitoring device is only provided with sensors at several points, the temperature distribution condition of the whole hearth cannot be comprehensively mastered, some local overheated or overcooled areas can be omitted, and coking is caused.

The utility model belongs to the technical field of recovery and ammonia distillation of coke oven products, and particularly relates to a temporary treatment device for tower top ammonia gas of an ammonia distillation tower, which is characterized by comprising an overflow pipe, an ammonia condensate tank and a heat tracing device, one end of the overflow pipe is connected with a top outlet of the ammonia distillation tower, the other end of the overflow pipe is connected with a chimney, and the overflow pipe is an inverted n-shaped pipe body; the ammonia condensate tank is arranged at the lowest point of the overflow pipe; the access point of the overflow pipe and the chimney is not higher than 40% of the total height of the chimney; a heat tracing device is arranged on the inner side and / or the outer side of the overflow pipe. Compared with the prior art, the device has the beneficial effects that as a temporary measure, when a follow-up unit cannot be normally put into use at the initial working stage, the ammonia gas is connected into the chimney through the temporary pipeline, cooling equipment and treatment equipment are not additionally arranged, the temporary emission of the ammonia gas at the top of the ammonia still is realized, and the ammonia gas is emitted after being diluted by gas in the chimney; the environmental pollution is reduced; and an original pipeline can be transformed, and the practicability is high.

The invention provides a conversion system and a conversion process for preparing methanol from coke oven gas, and relates to the technical field of processes for preparing methanol from coke oven gas. The conversion system for preparing methanol from coke oven gas comprises an oxygen supply module at least provided with an air separation oxygen supply unit and an oxygen supply compressor which are communicated with each other; a mixing module having at least a first mixing unit and a second mixing unit; and the conversion module is communicated with the first mixing unit and the second mixing unit. Wherein the oxygen supply compressor is further communicated with a liquid oxygen supply unit, and the liquid oxygen supply unit is used for supplementing supplied oxygen; the first mixing unit is communicated with the oxygen supply compressor, and the first mixing unit is communicated with a steam generator and carbon dioxide supply equipment; the second mixing unit is communicated with the steam generator and the coke-oven gas compressor; the first mixing unit is provided with a first heating device; and the second mixing unit is provided with a second heating device. The conversion rate of methanol synthesized from coke oven gas can be improved.

A method of repairing or replacing a roof of a coke oven battery in operation, said coke oven battery including a number of parallel coking chambers separated by heating walls and delimited on top by a ceiling, itself covered by a roof, the roof having for each coking chamber a number of charging holes or gas transfer holes above the coking chamber, a number of inspection holes above the separating heating walls, one or two base rings connected to one or two gas collecting mains and rail sleepers supporting rails for a coke charging car or charging gas transfer car through an ascension pipe. A kit of parts with construction modules and the use of such kit of parts in the repairing or replacing of a roof of a coke oven battery in operation and or with at least one oven empty in hot condition is also related.

The utility model discloses a coke oven masonry machinery arrangement carrier which comprises a supporting plate, a box body, a sliding strip, an air inlet pipe and a box door, buffer wheel mechanisms are arranged on the periphery of the lower end of the supporting plate, the box body is arranged in the middle of the upper end of the supporting plate, air inlets are formed in the upper portion and the lower portion of the inner wall of the left side of the box body, and a drying machine is arranged in the middle of the upper end of the box body. An air inlet pipe is arranged on the lower portion of the left side wall of the dryer. The device is reasonable in structural design, and the buffer wheel mechanism is arranged, so that the whole device can be conveniently moved, manual transportation is avoided, meanwhile, precise elements for coke oven masonry can be conveniently transported in a buffer mode, and damage caused by vibration in the transportation process is avoided; a screw rod, a nut, a second spring and an abutting seat are arranged, so that surveying and mapping precision elements of different sizes can be fixed and abutted, and damage caused by shaking of the precision elements is avoided; by arranging the dryer and the ventilation opening, the interior of the box body can be dried and ventilated, and the precision elements are prevented from being affected with damp to affect normal use.

This utility model discloses a tamping-type coking oven gas collection device. A gas collecting pipe and a negative pressure pipe are installed at the top of the coking oven. The negative pressure pipe connects to a heat energy cascade recovery assembly, a spray device, and a filter assembly. The valve at the front end of the negative pressure pipe is automatically flipped by a combined drive assembly. The combined drive assembly uses a baffle, slide rod, and rack and pinion linkage to drive the valve using gas pressure, with a spring assisting in reset, achieving dynamic pressure balance in the system. The screw can adjust the initial opening of the valve. The heat energy cascade recovery assembly includes high-temperature, medium-temperature, and low-temperature heat exchangers, increasing the gas heat energy recovery rate to 60-70%. The filter assembly uses a porous ceramic layer and a molecular sieve layer to effectively remove micron-sized particles and molecular-level impurities. This device requires no additional power, can precisely control pressure, efficiently recover heat energy, and purify gas, solving problems such as energy waste, pressure runaway, and insufficient filtration in traditional devices. It improves the safety and economy of coking oven operation and is suitable for tamping-type coking oven gas collection.

The invention relates to the technical field of methods special for coke oven masonry, in particular to a dynamic dustproof construction method in a coke oven combustion chamber masonry process, which comprises the following steps: arranging a first flexible isolation layer; a protection device is installed in the combustion chamber, the position of the protection device is periodically adjusted along with the laying progress, the protection device is removed after laying is conducted to a third height, the first flexible isolation layer is broken after being cleaned, and a second flexible isolation layer is laid; after the combustion chamber overhead building is completed, dust on the second flexible isolation layer is cleared and then broken, and a top opening of the combustion chamber is subjected to top sealing protection; in the follow-up masonry process, top sealing protection is updated regularly till masonry is completed; according to the method, dynamic segmented protection is achieved, whole-course dust prevention is achieved by laying the flexible isolation layer in stages and dynamically adjusting the protection device, and a cleaning blind area of one-time protection in a traditional method is avoided. The protection device does not need to be disassembled and assembled repeatedly along with improvement of the masonry progress, and the construction efficiency is improved.

The embodiment of the invention provides a coal-fired unit stable combustion coupling aluminum fuel energy storage semicoke treatment system and method, in the system, an Al2O3 electrolyzer supplies power through a renewable energy power generation device, and an anode outlet of the Al2O3 electrolyzer is connected with an inlet of a condenser; an inlet and an outlet of the first gas mixer are respectively connected with a first outlet of the condenser and an inlet of the oxygen-enriched air storage tank, an inlet and an outlet of the coal mill are respectively connected with a first outlet of the oxygen-enriched air storage tank and an inlet of the semi-gasification burner, and an outlet of the semi-gasification burner is connected with a nozzle of the semi-coke burner; semi-coke fuel is crushed by the coal mill and then is fed into the semi-gasification combustor by taking oxygen-enriched air in the oxygen-enriched air storage tank as gasification background gas for stable combustion. According to the system, a coal-fired power plant, new energy power generation, coal-based solid waste utilization and the ecological restoration field are combined, the utilization rate of the coal-based solid waste is increased, the application field of the coal-based solid waste is expanded, a multi-element coupled energy system is constructed, and carbon emission is reduced.

The utility model provides a fixed tooth groove liquid level type coke oven single carbonization chamber raw gas pressure adjusting device which comprises a valve body and a valve plate, the valve body is of a cylindrical structure, the valve plate is of a tray type structure, the lower end of the valve body is connected with an inner cylinder in a sealed mode, a plurality of open holes are formed in the cylinder wall of the lower end of the inner cylinder, the side wall of the valve plate is connected with the lower end of the valve body, and an opening of the tray type structure is upward. When the bottom face of the valve plate swings to the horizontal position, the lower end of the inner cylinder can be located in the disc type structure of the valve plate, and the height of the top end of the opening is smaller than that of the disc opening edge of the valve plate. The pressure regulating device is used as a water-sealed valve for regulating the pressure of raw gas in a coke oven carbonization chamber, and can effectively control the discharge of liquid and regulate the pressure of the raw gas through the design of a tooth groove structure. The device can effectively control the pressure while rapidly reducing the pressure of the raw gas, and can solve the problem that the pressure regulation amplitude of the existing device is small.

The present application belongs to the technical field of desulfurization pulping, and relates to a coke oven flue gas desulfurization pulping control method. A slurry distributor is connected to a pulping digestion tank, and the slurry distributor is arranged in parallel with a vibrating screen, so that the slurry discharge direction of the slurry distributor is parallel to the vibrating screen, the impact of the slurry on the vibrating screen is reduced, the width of the slurry discharge port is expanded through the slurry distributor, and the slurry is uniformly discharged onto the vibrating screen. The slurry distributor comprises a distributor shell and baffles. One end of the distributor shell is provided with a slurry inlet, and the other end is provided with a slurry discharge port. The slurry inlet is communicated with the pulping digestion tank through a slurry downpipe. The baffles are multiple and are arranged between the slurry inlet and the slurry discharge port. The baffles guide the slurry from the slurry inlet to the slurry discharge port. The present application guides the slurry through the slurry distributor, so that the slurry discharge direction is parallel to the vibrating screen and the width of the discharge port is expanded, the problem of impacting the vibrating screen during the lime slurry discharging process is solved, the splashing of the slurry is reduced, and the effect of the vibrating screen is improved.

The invention relates to the technical field of ignition guns for coke oven ascension pipes, in particular to a quick-ignition and strong-wind-resistance nanometer ceramic heating body ignition gun for a coke oven ascension pipe. Comprising a porous protective gun head, a 90-degree bent gun body and a junction box which are connected in sequence, the nano ceramic crystal heating body is arranged in the porous protective gun head and is used for raising the temperature to 800 DEG C or above within 2 seconds; a plurality of vent holes distributed in an annular array are formed in the front end of the porous protective gun head, so that wind-resistant flames are formed; the gun body bent by 90 degrees comprises an inner heat insulation layer and an outer gun barrel arranged outside the inner heat insulation layer in a sleeving mode, and a heat insulation gap is formed between the inner heat insulation layer and the outer gun barrel. The junction box is of a modular structure and is arranged at the tail end of the gun body. The device can be quickly started, has strong wind interference resistance and extreme high temperature resistance, and is convenient to maintain.

The utility model provides a brick positioning and supporting device of a coke oven furnace end masonry robot, which belongs to the technical field of coke oven construction engineering and comprises a stand column, a linear sliding table and a limiting mechanism. The linear sliding table is installed on the stand column, one end of the limiting mechanism is connected with the linear sliding table, and the linear sliding table can drive the limiting mechanism to move in the direction of the stand column. And the limiting mechanism is used for limiting the position of the furnace end masonry. The furnace end brickwork is limited and supported by the limiting mechanism through the lifting of the linear sliding table, so that the requirements of different wall widths can be met. By means of the design, the integrity of masonry is guaranteed, and bricks on the two sides are prevented from moving due to extrusion force in the masonry process.

The invention relates to the technical field of coke oven refractory material construction equipment, in particular to a furnace building greenhouse adapting to different working conditions and a construction method thereof, a greenhouse body comprises a main span structure and an auxiliary span structure, the main span structure comprises a plurality of main span frame units, and each main span frame unit comprises two main span stand columns and two main span roof truss beams; the two ends of the main span roof truss beam are connected with the tops of the main span stand columns on the corresponding sides. The auxiliary-span structure comprises a plurality of auxiliary-span frame units, each auxiliary-span frame unit comprises an auxiliary-span stand column and an auxiliary-span roof truss beam, the auxiliary-span stand columns are arranged on the outer side of the main-span stand column on one side of the main-span frame unit in parallel, and the auxiliary-span roof truss beams are obliquely arranged between the main-span stand columns and the auxiliary-span stand columns and connected with the main-span stand columns and the auxiliary-span stand columns respectively; the main span structure and the auxiliary span structure of the greenhouse are divided into a plurality of detachable frame unit modules, and the unit modules are assembled according to field requirements, so that the universality of the greenhouse is improved, repeated design and repeated manufacturing are avoided, and the turnover utilization rate of the greenhouse is increased.

The preparation method comprises the following steps: dispersing CeO2 nanoparticles in absolute ethyl alcohol containing diluted hydrochloric acid, activating, adding a certain amount of a silane coupling agent and diluted hydrochloric acid, carrying out a water bath reaction for a certain time, separating after the reaction is finished to obtain a surface-modified CeO2 nanoparticle crude product, and purifying to obtain the organic silicon separation membrane. The CeO2 nanoparticles with the modified surfaces are obtained; dissolving an organic silicon precursor 1, 2-bis (triethoxysilyl) ethylene in absolute ethyl alcohol, adding deionized water and diluted hydrochloric acid, heating and stirring to form a Si-OH intermediate, stirring and adding the surface modified CeO2 to obtain CeO2 modified organic silicon sol; coating a porous aluminum oxide ceramic tube with the CeO2 modified organic silicon sol, and calcining to obtain a CeO2 modified separation membrane; compared with an organic silicon separation membrane modified by noble metal, the separation membrane prepared by the method is relatively low in cost, good in stability in a complex gas environment and relatively good in hydrogen selectivity.

This utility model relates to a coke oven door and frame cleaning device, belonging to the field of coke oven cleaning technology. It includes a hollow column and multiple laser gun heads. A protective box is vertically slidable on the front side of the hollow column. A cable outlet box communicating with the interior of the protective box is fixedly connected to the lower rear end of the protective box. A cover plate is detachably fastened to the front opening of the protective box. Multiple laser gun heads are arranged horizontally and equidistantly inside the protective box. This utility model uses high-power laser beams emitted by the laser gun heads to irradiate impurities adhering to the surface of the oven door and frame, causing them to evaporate or decompose due to heat, thereby effectively removing impurities from the oven door and frame and achieving the cleaning purpose. Compared with traditional scraper-type cleaning, this laser cleaning method significantly improves the cleaning speed and can clean dead corners that scrapers cannot reach. Furthermore, laser cleaning does not require direct contact with the oven door and frame, thus avoiding wear and tear that may result from mechanical contact.

The utility model relates to the technical field of flue gas desulfurization, in particular to a coke oven flue gas desulfurization and regeneration integrated tower which comprises a bottom plate, the top of the bottom plate is fixedly connected with a control plate and a desulfurization cylinder respectively, a first filter screen is fixedly connected in the desulfurization cylinder, the surface of the first filter screen is fixedly connected with a magnetic plate, and a second filter screen is arranged at the top of the first filter screen. The bottom of the second filter screen is fixedly connected with an iron plate, the iron plate is in magnetic attraction connection with the magnetic plate, an insertion groove is formed in the second filter screen, a third filter screen is arranged at the top of the second filter screen, the bottom of the third filter screen is fixedly connected with an insertion rod, and the insertion rod extends into the insertion groove and is in insertion connection with the insertion groove; a driving motor is mounted at the top of the desulfurization cylinder; the stirring rod can be driven to rotate under the power action of the driving motor, and the catalyst is in full contact with the flue gas through the rotation of the stirring rod, so that the flue gas desulfurization effect and the flue gas desulfurization speed can be improved, and the practicability of the whole device is higher.