135results about "Cooling devices" patented technology

The invention discloses a blast furnace pulverized coal electromagnetic preheating system and process, and relates to the technical field of blast furnace ironmaking. The blast furnace pulverized coal electromagnetic preheating system comprises a pulverized coal bin, an injection tank and a mixer, a radial flow guide device is arranged at the inlet end in a rough preheating pipeline, and the radial flow guide device is used for separating materials according to the diameter and guiding the materials to move on the inner wall of the radial rough preheating pipeline; the intermediate heating device is used for forming a heating channel and heating materials moving along the middle of the coarse preheating pipeline, and a dispersing device is arranged at the outlet end of the coarse preheating pipeline and used for dispersing the materials with different particle sizes to different areas and conveying the materials into the fine preheating pipeline. According to the blast furnace pulverized coal electromagnetic preheating system and process, powder moisture is removed through coarse preheating, powder with different particle sizes is guided to be separated and move towards the inner wall of the coarse preheating pipeline, materials with different particle sizes are dispersed to different areas through fine preheating, and the powder reaches the temperature close to an ignition point.

To provide a construction method of a cooling stave capable of bringing the cooling stave into close contact with an iron shell, and the cooling stave.SOLUTION: The method of installing the cooling stave includes a stave body provided with a cooling pipe through which a cooling fluid flows, a refractory layer formed of a refractory on one surface of the stave body, and a wall portion formed of a refractory on a peripheral edge portion of the refractory layer, and includes a fixing step (step S4) of fixing the stave to the shell of the blast furnace by pressing the wall portion against the shell in a deformable state of the refractory forming the wall portion.SELECTED DRAWING: Figure 1

The invention discloses an integral pouring method and structure of a blast furnace hearth for replacing a cooling wall. A lining body formed by integrally pouring a high-thermal-conductivity amorphous refractory material is directly arranged on the inner side of a furnace shell; a plurality of hole channels are formed in the furnace shell, cooling elements are arranged in the hole channels, one end of each cooling element is embedded into and penetrates through the lining body and is in close contact with the lining body, a cooling wall is omitted, air gap thermal resistance is avoided, the cooling elements are in direct contact with a high-thermal-conductivity refractory material, heat can be quickly and directly transmitted to a cooling system, and the cooling efficiency is greatly improved; a protective slag iron shell is easily formed on the hot surface of the hearth; the overall pouring structure is free of brick joints, and permeation erosion of molten iron and alkali metal is avoided; the high thermal conductivity ensures that the temperature field of the hearth lining is uniformly distributed, the thermal stress is small, and the ring crack risk of a traditional structure is fundamentally eradicated; if abnormal erosion occurs in a local area, online repair can be performed by adopting a press-in technology, so that the maintenance cost is low, and the service life of the first-generation blast furnace is prolonged.

The utility model relates to the technical field of water temperature monitoring, in particular to a blast furnace cooling wall water temperature monitoring device. According to the technical scheme, the temperature probe comprises a pipe ring, a temperature probe and a ball body, the pipe ring is provided with a positioning seat and a base, the base is provided with a sleeve, the bottom end of the sleeve is provided with a ball sleeve, the ball body is rotatably arranged in the ball sleeve, the ball body is provided with a shaft rod, the shaft rod penetrates through the ball sleeve and is rotatably arranged on the positioning seat, and the shaft rod is provided with a rotating shaft. A positioning assembly is arranged at the end of the shaft rod, the temperature probe is inserted and positioned on the sleeve through a base, and the bottom end of the temperature probe penetrates through the ball body. According to the utility model, through cooperation of the structures, the temperature probe can be dismounted without cutting off all pipelines, and the maintenance convenience of the temperature measurement monitoring device is improved.

The invention relates to a microchannel single-cavity tuyere small sleeve and a blast furnace comprising the microchannel single-cavity tuyere small sleeve, the microchannel single-cavity tuyere small sleeve comprises a small sleeve body, the small sleeve body is provided with a heat exchange cavity and a cooling cavity located on the periphery of the heat exchange cavity, and the heat exchange cavity penetrates through the small sleeve body in the length direction; the cooling cavity comprises a first cavity body and a second cavity body which are distributed in the length direction. The partition plate is arranged in the second cavity and surrounds the heat exchange cavity so as to divide the second cavity into a third cavity and a fourth cavity surrounding the radial outer side of the third cavity, and the sides, away from the first cavity, of the third cavity and the fourth cavity communicate with each other; and the at least one first cooling liquid pipe is arranged in the first cavity, the first end of the first cooling liquid pipe communicates with one of the third cavity and the fourth cavity, and the second end of the first cooling liquid pipe penetrates out of the side wall, away from the second cavity, of the first cavity. The temperature of the micro-channel single-cavity tuyere small sleeve is reduced, and damage caused by too high temperature is avoided.

This invention provides an energy-saving blast furnace gas temperature regulation device, applied at the blast furnace gas outlet. It includes a gravity dust collector, a radiator, a dust collection bag, and a turbine. The gravity dust collector is connected at one end to the blast furnace gas outlet and at the other end to the radiator, used for preliminary removal of large particulate impurities from the blast furnace gas. The radiator is connected at one end to the gravity dust collector and at the other end to the dust collection bag, used to control the temperature of the blast furnace gas and prevent damage to the dust collection bag. The dust collection bag is connected at one end to the radiator and at the other end to the turbine, used to remove impurities from the blast furnace gas, completing the purification process. The turbine, connected to the dust collection bag, converts the pressure and thermal energy of the blast furnace gas into rotational mechanical energy to drive a generator. This invention effectively regulates the temperature of the blast furnace gas, simultaneously treating the gas and enabling its recycling.

This invention belongs to the field of blast furnace operation and longevity technology, and relates to a combined cooling structure and cooling process for stabilizing the internal shape of a blast furnace belly. The combined cooling structure includes: a belly cooling wall, continuously arranged circumferentially along the inner side of the furnace shell, with its hot surface protruding inwards, such that the hot surfaces of multiple belly cooling walls together form a continuous inclined plane consistent with the designed belly angle α; a first cooling plate layer, continuously arranged circumferentially along the lower part of the belly cooling wall, and extending radially in the blast furnace to cover the lower end of the belly cooling wall; and a second cooling plate layer, composed of multiple second cooling plates arranged below the first cooling plate layer. This invention, through its innovative structural design of the hot surface of the belly cooling wall protruding inwards and the continuous arrangement of the first cooling plate layer forming a protective eave, solves the problem of internal shape instability caused by changes in refractory or slag thickness.

The invention belongs to the technical field of blast furnace ironmaking, and discloses a hierarchical control method for blast furnace top water fetching and cooling. According to the method, in order to solve the problems that when the furnace top temperature abnormally rises, control is not stable, and the water amount is not easy to control, hierarchical control is achieved by dividing an operation scheme into three modes including an automatic mode, a self-selection mode and a self-definition mode. Wherein the automatic mode is used for daily furnace condition temperature abnormal rising, and water spraying guns are symmetrically opened in four stages according to the temperature rising speed; the self-selection mode is used for starting and supplementing a water gun according to a top temperature measurement point division mode for high-frequency temperature point abnormity; the user-defined mode allows an operator to freely select the water gun. According to the method, the furnace top temperature can be effectively controlled within a reasonable range, the timeliness and effectiveness of water fetching and cooling are enhanced, the lag problem caused by mistaken water fetching and local airflow is avoided, the influence on production in the furnace is reduced, and stable operation of a gas dust removal system is facilitated.

This application discloses a device for treating blockages in cooling wall water pipes. The device includes: a first tee pipe having a fourth, fifth, and sixth pipe, wherein the fourth pipe is connected to the flow channel of the first pipe, the fifth pipe is connected to the flow channel of the third pipe, and the sixth pipe is located between the fourth and fifth pipes; a second tee pipe having a seventh, eighth, and ninth pipe, wherein the seventh pipe is connected to the sixth pipe, the ninth pipe is connected to the second pipe, and the ninth pipe is located between the seventh and eighth pipes; a first shut-off valve located on the eighth pipe for controlling the on / off state of the eighth pipe; and a second shut-off valve located on the ninth pipe for controlling the on / off state of the ninth pipe.

The utility model discloses a fully utilized inner hole structure of a blast-furnace tuyere small sleeve, relates to the technical field of blast-furnace tuyere small sleeves, and aims to solve the problems that the existing blast-furnace tuyere small sleeve is harsh in working environment, is easy to damage under the conditions of tuyere blockage, non-uniform airflow distribution at the upper part of a blast furnace or airflow fluctuation, and is not easy to damage. Meanwhile, molten iron makes direct contact with the copper wall of a small sleeve, heat flow drastically increases within an extremely short time, small sleeve melting loss can be caused, meanwhile, a necking lining is installed in the small sleeve, the size of the lining is not appropriate, the lining cannot be flush with the front section of the small sleeve, airflow entering a furnace is disordered, blast furnace inlet airflow is disordered, and the furnace condition is worsened. According to the technical scheme, the small sleeve is characterized by comprising a small sleeve body, a small sleeve air channel is formed in the center of the interior of the small sleeve body, a front air opening is reserved in the other end, located on the outer side of the small sleeve air channel, of the interior of the small sleeve body, and a surfacing layer is arranged on the outer side of the small sleeve body. And the effects of stable work, cost reduction and efficiency improvement are achieved.

The invention belongs to the technical field of cooling equipment, and discloses a blast furnace rapid cooling structure which is technically characterized by comprising a furnace shell, a water cooling wall is fixedly mounted on the inner side of the furnace shell, a cooling pipe is arranged in the water cooling wall, cooling plates are fixedly mounted at different heights of the surface of the furnace shell, and cooling cavities are formed in the cooling plates; a bearing seat is slidably mounted in the cooling cavity in the vertical direction, a heat dissipation net plate is fixedly mounted on the surface of the bearing seat, ventilation holes are formed in the surface of the cooling plate, a positioning assembly is arranged on the surface of the furnace shell, and a heat dissipation mechanism matched with the ventilation holes is arranged on the surface of the cooling plate. The heat dissipation mechanism comprises a sealing assembly and a ventilation assembly, the ventilation assembly and the sealing assembly are arranged to be matched with each other, the opening and closing states of the ventilation holes can be automatically switched, then evaporation of water attached to the surface of the cooling cavity can be accelerated, and the heat dissipation and cooling speed of the cooling plate and the water cooling wall is further increased.

The invention relates to the technical field of replacement of iron-making blast furnace shells in the metallurgical industry, and provides a construction method for replacing a furnace shell at a hearth part of a large iron-making blast furnace, which comprises the following steps: S1, preparing a hearth state; s2, temperature control; s3, load calculation; s4, mounting a supporting column; s5, ring beam design; s6, cutting and separating the old furnace shell; s7, settlement detection and dismantling condition confirmation; s8, mounting and welding a new furnace shell; s9, a temporary support dismantling sequence is determined; a stable bottom bearing base is formed by retaining a dead iron layer or a slag iron shell to directly bear the vertical load of a hearth lining and residual materials, only the steel pipe supporting columns need to be fixedly arranged on the furnace bottom plate at intervals, and the total steel consumption is reduced; and the local load is converted into the internal force of the whole frame through accurate positioning of the column tops, steel pipe diagonal bracing between the columns, formation of a space rigid frame system and conversion of the local load into the internal force of the whole frame, the column bottoms and the furnace bottom plate only need to be fully welded, stiffening ribs are arranged, the welding workload is reduced, and the problem of residual stress concentration of the frame is avoided.

A cooling method for super-large blast furnaces during maintenance shutdowns involves intermittently spraying water from cross-shaped temperature measuring holes and tuyere water guns inserted into the tuyere outlets after the furnace is shut down. The water spraying method is monitored and controlled in stages to effectively cool the remaining coke surface in the hearth. Throughout the process, the water volume is rationally controlled based on a series of collected parameters, including gas temperature, gas concentration, and coke surface temperature. The installed water guns and tuyere water guns have atomizing spraying functions, working in conjunction with pre-set top water guns to spray water onto the coke surface in the center of the hearth for cooling. This invention implements intermittent water spraying cooling by collecting multiple parameters. This invention not only achieves coke cooling, creating safe working conditions for furnace construction, but also avoids damage to the carbon bricks caused by excessive water contact with the cooling water. Furthermore, it creates favorable conditions for cleaning broken coke from the hearth before furnace restart.

The utility model belongs to the technical field of blast furnace cooling devices, and relates to a novel cooling system on-line monitoring device which comprises a tuyere sleeve, a water inlet pipe and a water outlet pipe are respectively connected onto the tuyere sleeve, connecting flanges are arranged at the tail ends of the water inlet pipe and the water outlet pipe, and turbine flowmeters are arranged in the water inlet pipe and the water outlet pipe. A temperature display screen is arranged on the side wall of the tuyere sleeve and comprises a temperature sensing probe, one end of the temperature sensing probe is inserted into the tuyere sleeve, a bearing is arranged at the other end of the temperature sensing probe and connected with a rotary connecting block, the rotary connecting block is connected with a fixed connecting block, and a liquid crystal screen is arranged on the fixed connecting block. The blast furnace tuyere sleeve cooling efficiency monitoring device has the dual functions of monitoring the cooling water flow and the tuyere temperature in real time, accurately detects the flow speed of a pipeline through the built-in turbine flowmeter, and realizes dynamic visual monitoring of the cooling efficiency of key parts of the blast furnace tuyere sleeve in cooperation with the rotatable digital display screen.

The utility model discloses an intelligent main channel cooling and ventilating system for a blast furnace casting house, which belongs to the field of steel smelting and comprises an air inlet, an air cooling layer, a ventilating slot, an air gathering device, a cooling device and an air outlet. The air cooling layer is arranged between the tapping channel steel structure and the protective layer; the air inlet is formed in the bottom of the protection layer, and the air gathering device communicates with the air cooling layer through the ventilation groove; external air enters the air cooling layer from the air inlet and then flows into the ventilation groove, and high-speed airflow is formed to achieve air cooling of the tapping channel. According to the utility model, a drainage route formed by the wind gathering device, the adsorption fans connected in parallel and the ventilation pipes is adopted, a large amount of airflow can be respectively guided into the corresponding ventilation pipes through the adsorption fans connected in parallel, the air pressure of the pipelines can be reduced, and the operation stability and safety of the whole system are improved.

The utility model discloses a blast furnace lining cooling mechanism, which belongs to the technical field of steel-making blast furnaces and comprises a base, a steel-making blast furnace, an inner cavity, a furnace lining, a furnace top and an ascending pipe, the steel-making blast furnace is mounted at the top of the base, the inner cavity is arranged in the steel-making blast furnace, and the furnace lining is arranged in the outer wall of the steel-making blast furnace in a matched manner. And a cooling mechanism capable of cooling the furnace lining and a heat dissipation mechanism capable of dissipating heat of the heat dissipation fins are arranged on the outer side of the steel-making blast furnace. According to the utility model, the cooling mechanism is arranged, and the heat conduction silica gel pad A, the heat dissipation fins, the cooling pipe, the heat conduction silica gel pad B, the heat exchanger and the circulating water pump are matched for use, so that the heat conduction silica gel pad A and the heat dissipation fins can be used for conducting out the temperature on the surface of the furnace lining, and further the furnace lining is cooled; and heat conduction oil in the cooling pipe can be circularly cooled through the circulating water pump, the cooling pipe and the heat exchanger, and the furnace lining is further cooled in a water cooling mode.

The present disclosure discloses a system (500) for measuring thickness along a length of a conduit (111). The system includes a guide tube and a device (300) positioned in the guide tube (370). The device is configured to displace along the guide tube into the conduit. The device includes a plurality of links (100) pivotally connected to each other. Further, at least one carrier link (304) is positioned between at least a pair of the plurality of links and is configured to accommodate at least one sensor (340). Additionally, at least one protrusion (330) extends from the at least one carrier link and is configured to support a portion of the at least one sensor, to contact the conduit for measuring thickness of the conduit. Furthermore, a control unit (400) is communicatively coupled to the device (300) to operate the device and measure thickness along the length of the conduit.

The utility model relates to the technical field of furnace body cooling equipment, and discloses a copper cooling plate, a cooling plate body comprises a main water chamber and at least two branch water chambers, and the rear end of the cooling plate body is provided with the main water chamber and an opening communicated with the main water chamber; one end of each branch water chamber is communicated with the main water chamber, and the other end extends towards the front end of the cooling plate body; the pipeline structure comprises a main pipe and at least two branch pipes communicated with the main pipe, and a first flow channel is defined by the main pipe and the main water chamber; a second flow channel is defined by the branch pipe and the branch water chamber; the first flow channel communicates with the second flow channel, a water inlet is formed in the main pipe, and an outlet communicating with the second flow channel is formed in the end, away from the main pipe, of the branch pipe. The cover plate is connected to the opening in a sealed mode, the cover plate is provided with a water outlet and a connecting port which are communicated with the main water chamber, and the connecting port is communicated with the water inlet. According to the copper cooling plate, the branch water chambers can be evenly and densely formed through the opening and the main water chamber, the cooling effect is good, and the copper cooling plate is not prone to damage.

The utility model relates to a cooling plate easy to disassemble, which comprises a cooling plate body, a lifting lug and two plugs, a cooling channel is arranged in the cooling plate body, two sand cleaning holes in the front-back direction are arranged on the rear end face of the cooling plate body, and the two sand cleaning holes are both communicated with the cooling channel; the lifting lug is mounted at the central position of the rear end surface of the cooling plate body and is positioned between the two sand cleaning holes; the sand cleaning device is characterized in that external threads are arranged on the outer walls of the two plugs, internal threads matched with the external threads are arranged on the inner walls of the two sand cleaning holes, and the two plugs are installed in the corresponding sand cleaning holes through mutual matching of the external threads and the internal threads; the cooling plate easy to disassemble is further provided with two lifting bolts, and the rod portions of the two lifting bolts are matched with the internal threads on the inner walls of the corresponding sand cleaning holes respectively. According to the cooling plate easy to disassemble, drawing points can be increased, the lifting lugs and the cooling plate body are prevented from deforming in the drawing process, and later maintenance of the cooling plate is facilitated.

The utility model discloses a membrane type water-cooled wall flash ironmaking device, and belongs to the technical field of green low-carbon environment-friendly metallurgy. The device is a coal gasification flash ironmaking device, the lower part of the device is an elliptical or rectangular molten pool, the left upper part of the molten pool is a flash smelting furnace, the right upper part of the molten pool is a gravity settling chamber, and the flash smelting furnace, the molten pool and the gravity settling chamber are all provided with membrane water-cooled wall structures. According to the device provided by the utility model, the refractory material can be effectively protected, and the service life of the flash smelting furnace is prolonged; natural circulation of cooling water of the water-cooled wall of the iron-making furnace is realized, and power consumption is reduced; the membrane type water cooling wall structure protects the refractory material and produces steam at the same time, waste heat recovery of cooling water is achieved, and the dust content in ironmaking tail gas is greatly reduced.

The invention discloses a short-term overhaul construction method for a blast furnace body. The method comprises the following steps: lowering the charge level of the blast furnace below the center line of a tuyere; damping down the blast furnace; removing the tuyere medium sleeve, the tuyere small sleeve and the furnace top large manhole; hoisting a row rake to level the charge level in the furnace; a covering agent is sprayed to cover the material surface in the furnace, and slag removal and danger removal are conducted on a furnace body; a cooling wall operation hanging scaffold is assembled on the surface of the covering agent; the cooling wall is replaced; cleaning the upper semicircles of the tuyere combined bricks; a cooling wall operation hanging scaffold serves as a construction platform to clean the surface of the cooling wall in the area above the tuyere, and wet spraying is conducted; a furnace throat steel brick protection plate is replaced; local repairing is conducted on the gas sealing cover spraying paint; removing a covering agent and a cooling wall operation hanging scaffold; performing synchronous construction outside the furnace; reassembling furnace top and tuyere equipment; the furnace body is pressed for leakage detection; and carrying out blast furnace charging and reblowing production. According to the short-term overhaul construction method for the blast furnace body, a systematic thought is provided for short-term overhaul of the blast furnace, the construction period required by short-term overhaul of the blast furnace can be shortened, and the shutdown loss is reduced.

This invention discloses a cooling structure for a reduction furnace body and a reduction furnace, belonging to the technical field of ironmaking equipment. To improve the service life of the reduction furnace, the cooling structure of the furnace body includes a cooling wall layer (1), which contains multiple cooling wall blocks (101). Upper copper cooling strips (2) are stacked and connected to the upper part of the inner surface of each cooling wall block (101), and lower copper cooling strips (4) are stacked and connected to the lower part of the inner surface of each cooling wall block (101). The upper side of the upper copper cooling strip (2) is higher than or equal to the upper side of the cooling wall block (101) to which it is connected, and the lower side of the lower copper cooling strip (4) is lower than or equal to the lower side of the cooling wall block (101) to which it is connected. The cooling structure of the reduction furnace body enhances the cooling effect of the gap between two adjacent cooling wall blocks and the upper and lower edges of the cooling walls, thereby extending the cooling life of the reduction furnace body.

The utility model discloses a kind of furnace top water beating water leakage prevention freeze-proof device, belong to blast furnace equipment field, including the furnace top water beating pipeline arranged from the upward extension of blast furnace bottom, electric valve for controlling water beating is provided on the furnace top water beating pipeline at blast furnace top, drain total valve is provided at the place below furnace top water beating pipeline electric valve, three-way pipeline is provided between drain total valve and electric valve, drain valve is provided on three-way pipeline, three-way pipeline is connected to water leakage processing place.The utility model can solve the problem that a small amount of water remaining in water beating pipeline leaks into furnace, which is not only harmful to furnace condition but also causes water waste, and can conveniently drain water from the pipeline, eliminating the risk of trace leakage and freeze cracking.

The application discloses a blast furnace pulverized coal electromagnetic preheating system and process and relates to the technical field of blast furnace ironmaking. The blast furnace pulverized coal electromagnetic preheating system comprises a pulverized coal bin, a blowing tank and a mixer. A radial flow guide device is arranged at the inlet end of a coarse preheating pipeline. The radial flow guide device is used for separating materials according to diameters and guiding the materials to move along the inner wall of the radial coarse preheating pipeline. A medium heating device is used for forming a heating channel and heating the materials moving along the middle part of the coarse preheating pipeline. A dispersing device is arranged at the outlet end of the coarse preheating pipeline. The dispersing device is used for dispersing materials with different particle sizes into different areas and conveying the materials into a fine preheating pipeline. The blast furnace pulverized coal electromagnetic preheating system and process remove the moisture of the powder through coarse preheating, guide the powder with different particle sizes to separate and move along the inner wall of the coarse preheating pipeline, disperse the materials with different particle sizes into different areas through fine preheating and make the powder reach the temperature close to the ignition point.

The utility model discloses a blast furnace deslagging structure, which belongs to the technical field of steelmaking blast furnaces and comprises a workshop, a molten iron diversion trench, a blast furnace, a high-temperature-resistant gate, a slag outlet A, a slag outlet B and a chain plate conveying belt, the blast furnace is arranged at the top of the workshop in a matched manner, the slag outlet A is mounted on the other side of the blast furnace through the high-temperature-resistant gate, and the slag outlet B is arranged at one end of the slag outlet A; a chain plate conveying belt and a molten iron flow guide groove are installed on the two sides of the interior of the workshop correspondingly, and the slag outlet A extends into the molten iron flow guide groove. According to the utility model, the material guide mechanism is arranged, and the anti-splashing cover, the flow guide screen plate, the movable cavity, the baffle plate and the winch are matched for use, so that blockage in the iron slag discharging process can be prevented through the inclined flow guide screen plate, and each component is matched with the slag outlet A and the slag outlet B for use; molten iron and iron slag can be separated and conveyed and guided through an independent channel, and therefore the iron slag can be further prevented from blocking the slag outlet A.

The invention belongs to the technical field of blast furnace smelting, and particularly discloses a blast furnace blow-in middle adjusting method which comprises the four steps of blow-in initial stage cooling schedule setting, middle stage cooling and tuyere cooperative adjustment, dynamic monitoring and emergency treatment and later stage stabilization and parameter callback. The problems of insufficient activity of the hearth, poor stability of the slag crust and unbalanced heat system are solved through the four steps, and after the technical problem is solved, the stability of the slag crust can be improved by 40%, and the heat loss is reduced by 3.5%; the coal gas utilization rate is increased to 44-45%, and the fuel ratio is reduced by 8-10 kg / t; the air volume is stabilized to 4500 m < 3 > / min, and the yield is recovered to 5000 t / d.

The invention discloses a cooling wall, a blast furnace and a brick embedding method of the cooling wall. The technical problem that a lining of a blast furnace cooling wall is difficult to repair quickly after being abraded is solved. The cooling wall comprises a cooling wall body, a first split type brick and a second split type brick. A plurality of parallel sliding grooves are formed in the cooling wall body. The thickness of the first split type brick is smaller than the width of the sliding groove, the thickness of the second split type brick is smaller than the width of the sliding groove, and the sum of the thickness of the second split type brick and the thickness of the first split type brick is smaller than or equal to the width of the sliding groove. The second split type brick and the first split type brick are arranged in the width direction of the sliding groove, the second split type brick and the first split type brick are spliced to form a heat-resisting brick, and the thickness of the end of the heat-resisting brick is matched with the width of the sliding groove. According to the cooling wall disclosed by the invention, the damaged split bricks can be independently replaced on the cooling wall, and the whole cooling wall body does not need to be replaced, so that the blowing-out maintenance time is shortened, and the production efficiency of the blast furnace is improved.

The invention provides a cooling water jacket for a blast furnace and a blast furnace cooling stave. The cooling water jacket comprises a cooling plate main body, and a cooling channel is arranged in the cooling plate main body; cooling channels are formed in the cooling plate main body, the wear-resistant protection bosses are also arranged in the wear-resistant protection bosses, the multiple wear-resistant protection bosses are distributed on the cooling plate main body at equal intervals so that every two adjacent wear-resistant protection bosses and the cooling plate main body can define a groove, and the extending direction of the grooves is not perpendicular to the center line of the blast furnace; and the heat conductivity coefficient of the cooling plate main body is higher than that of the wear-resistant protective boss, so that the cooling plate main body is flush with slag crust on the outer side of the wear-resistant protective boss or a flow guide groove parallel to the groove is formed in the outer side of the slag crust. The blast furnace cooling wall comprises the cooling water jacket for the blast furnace. The problem that the overall service life is short due to the fact that the edge area of a cooling water jacket in the prior art is prone to damage under the impact of coal gas flow is solved.

The invention provides a heat load balance type blast furnace cooling wall structure, and relates to the technical field of blast furnace smelting equipment. The structure comprises a steel frame, a furnace body and a plurality of cooling walls embedded in the inner wall of the furnace body. A connecting sleeve with a slotted hole is arranged on the outer wall of the furnace body, a rotating rod in threaded connection can accurately adjust advancing and retreating, and a sensor is arranged at the tail end of the rotating rod. The key point is that an intelligent control system is arranged in the control piece, and the system collects data in real time through a sensor array, constructs a thermal load distribution diagram in the furnace and automatically recognizes an abnormal area, so that a corresponding rotating rod is driven, and the position of a cooling wall is finely adjusted. By upgrading a fixed cooling structure into a closed-loop controllable active adjusting system, dynamic, accurate and automatic balance of thermal load distribution in the furnace is realized, local overheating or insufficient cooling is effectively avoided, the operation stability of the blast furnace is remarkably improved, and the service life of the cooling wall is remarkably prolonged.

The invention belongs to the technical field of blast furnace ironmaking equipment and process safety control, and particularly discloses a method for optimizing a hydrogen-carbon-rich circulating oxygen blast furnace top water fetching system and improving cooling capacity, which aims at the characteristics of high thermal load, complex heat source and strict temperature control requirements under extreme working conditions such as shutdown of a HyCROF blast furnace. The problems that an existing water fetching system is insufficient in cooling capacity redundancy and poor in reliability are fundamentally solved through capacity accounting of the water fetching system based on the limit thermal load, key equipment upgrading, hierarchical and partitioned water fetching control strategy making and linkage of the water fetching system and process operation. The method can ensure that the furnace top temperature of the HyCROF blast furnace is strictly controlled in a safe range under extreme working conditions, provides a solid guarantee for equipment safety and process stability, and has the advantages of intelligent control, water resource saving and prospective adaptation.