62 results about "Upflow velocity" patented technology

Disclosed are an SAGD injection-extraction method, apparatus and computer device for a deep ultra-heavy oil reservoir. The injection-extraction method comprises: preheating a horizontal well (10) and vertical wells (20) in a vertical-horizontal combined well network, wherein the vertical-horizontal combined well network comprises a horizontal well (10) and a plurality of vertical wells (21, 22), and the plurality of vertical wells are symmetrically distributed on both sides of the horizontal well; determining whether the preheating treatment is finished or not; and when the preheating treatment is finished, alternately injecting steam into at least some of the plurality of vertical wells, and carrying out SAGD oil extraction by utilizing the horizontal well. By means of the injection-extraction method, heat loss caused by the buried depth during extraction of the deep ultra-heavy oil reservoir can be offset; the rising speed and overlying height of steam cavities at individual steam-injecting well points are effectively controlled, thereby preventing single-point breakthrough of steam, which facilitates an improvement in the development of the steam cavities; and extraction of the deep ultra-heavy oil reservoir is achieved, and the extraction ratio of the deep oil reservoir is largely guaranteed.

The invention relates to the technical field of waste gas treatment, and provides a chemical reaction kettle waste gas treatment device which comprises a base, a liquid adsorption assembly is arranged on one side of the top end of the base and comprises a spraying adsorption treatment tank, and a heating assembly is arranged on the side, located on the spraying adsorption treatment tank, of the top end of the base; according to the device, waste gas enters the gas distribution plate and is sprayed out through small holes in the gas distribution plate, small bubbles are formed in liquid, the rising speed of the small bubbles is low, components in the gas can be adsorbed by the liquid, the motor is started, the motor drives the rotating rod to rotate, the rotating rod drives the stirring blades and the bubble dispersion plate to work, and the stirring blades stir the liquid; according to the gas-liquid separator, the gas-liquid separator is arranged, so that fine bubbles stay in liquid for a longer time and are fully mixed, the bubble dispersion plate reciprocates up and down through the reciprocating groove to extrude the liquid and the fine bubbles, gas fusion is increased, and the gas dispersion plate is provided with a plurality of fine holes, so that the gas rising speed can be limited, and the adsorption effect can be improved.

The invention relates to the technical field of copper smelting slag recovery and treatment, in particular to a copper smelting slag recovery and treatment device and process. The upper end and the lower end of the material chamber are fixedly connected to the inner wall of the furnace body, the material chamber is used as a reaction container, and a reaction raw material is granular copper smelting slag; the heating piece is arranged between the furnace body and the material chamber and is used for providing heat required by reaction; the gas inlet pipe is used for introducing hydrogen into the material chamber; the exhaust pipe is used for exhausting tail gas from the material chamber; the dispersing component is used for dispersing the hydrogen entering the material chamber; the turbulent flow part is used for changing the flowing direction of hydrogen in the material chamber; and the retention part is used for slowing down the rising speed of the tail gas. According to the copper smelting slag recovery treatment device and the treatment process, the spherical particles of the copper smelting slag are reduced through hydrogen, the cleanliness of the reacted product is high, the reaction product is easy to treat, and energy consumption and pollution to the environment are reduced.

The embodiment of the invention provides a deep super heavy oil reservoir SAGD injection and production method and device and computer equipment, the method comprises the steps that a horizontal well and vertical wells in a vertical and horizontal combined well pattern are preheated, the vertical and horizontal combined well pattern comprises one horizontal well and a plurality of vertical wells, and the vertical wells are symmetrically distributed on the two sides of the horizontal well; judging whether preheating treatment is completed or not; and when preheating treatment is completed, steam is injected into at least part of the multiple vertical wells in turns, and SAGD oil extraction is conducted through the horizontal wells. According to the method provided by the embodiment of the invention, heat loss caused by burial depth during exploitation of the deep super heavy oil reservoir can be made up; the rising speed and overlying height of the steam cavity of an individual steam injection well point are effectively controlled, steam single-point breakthrough is prevented, and development of the steam cavity is improved; exploiting of the deep super heavy oil reservoir is achieved, and the recovery rate of the deep-layer-like oil reservoir is greatly guaranteed.

The invention relates to the field of oil development engineering, in particular to a method, a system and equipment for controlling water content rise of an oil well of an ultra-low permeability reservoir. The problems that an existing method is short in validity period and causes pollution to stratums and the environment are solved. The method comprises the following steps: screening oil wells based on basic data to obtain a target oil well; pressure distribution of plane radial flow and pressure distribution of gas-phase unidirectional flow of the gas cap of the target oil well are calculated; pressure distribution of plane radial flow and pressure distribution of liquid-phase unidirectional flow of the oil layer of the target oil well are calculated; the position of the perforation is further calculated; calculating a roof-remaining reference value based on the stratigraphic dip angle, and calculating a roof-remaining thickness based on the roof-remaining reference value; setting the perforations based on the positions of the perforations and the thickness of the top, and adjusting the pressure distribution of the perforations by adjusting the bottom hole pressure based on practice so as to adjust the water content rising speed. The invention has the advantages of long period of validity and no pollution.

The utility model discloses a marine LNG tank liquid outlet device capable of effectively reducing heat transfer for a long time. The marine LNG tank liquid outlet device comprises a liquid conveying valve. One end of the liquid conveying pipe is connected with the LNG tank, the other end of the liquid conveying pipe is connected with the liquid conveying valve, and the liquid conveying pipe is provided with a vacuum interlayer in the length direction; and the vacuum sensor is arranged on the infusion tube and is used for monitoring the vacuum of the vacuum interlayer. The gas tank has the advantages that temperature can be effectively isolated, heat transfer of the liquid supply pipeline at the liquid supply stopping stage is greatly reduced, the pressure rising speed in the gas tank is slowed down, and diffusion of the gas tank is reduced.

The utility model discloses a bag type dust collector for steelmaking converter gas. The middle box body is welded to the supporting column, the air inlet pipe is welded to the side face of the lower portion of the middle box body, the four-way air distributor is welded to the end of the air inlet pipe, the four-way air distributor is arranged in the center of the middle box body, and the four-way air distributor comprises a four-way connector, a left air outlet pipe, a right air outlet pipe and a conical air diffuser. The air inlet pipe is horizontally welded to the air inlet end of the four-way connector, the left air outlet pipe and the right air outlet pipe are symmetrically welded to the left air outlet end and the right air outlet end respectively, and the conical air diffuser is welded to the lower portion; the middle box body is cylindrical, the side wall of the middle box body is an arch-shaped arc-string channel, the left side and the right side of the corresponding pattern plate are arch-shaped arc-string areas, the middle of the corresponding pattern plate is a filtering area, pattern plate holes are formed in the filtering area, and filtering elements are installed on the pattern plate holes. According to the device, the contact probability of coal gas and flue gas can be obviously reduced, the explosion-proof capability of equipment is improved, the airflow rising speed is reduced, dust settling is facilitated, the running resistance and energy consumption are reduced, and efficient, safe and energy-saving running of the converter coal gas bag type dust collector is realized.

The utility model relates to a gas recovery tower which comprises an absorption tower, a desorption tower, a liquid spraying assembly, a pump, a dispersion mechanism and a blocking mechanism, the upper side and the lower side of the absorption tower are connected with a gas inlet pipe and a gas outlet pipe, and the dispersion mechanism comprises a cover body which is arranged below the liquid spraying assembly and arranged above the output end of the gas inlet pipe in a blocking mode. The blocking mechanism comprises a blocking assembly which is arranged in the absorption tower and can be periodically opened and closed and a driving assembly for driving the blocking assembly to be periodically opened and closed. According to the utility model, through the arrangement of the blocking assembly, to-be-treated gas in the absorption tower can be blocked, the gas rising speed can be reduced, and the retention time of the gas in the absorption tower can be prolonged, so that the gas can fully react with reaction chemicals sprayed out by the liquid spraying assembly, and the gas treatment effect is ensured; the cover body is additionally arranged in the absorption tower, so that reaction chemicals can be effectively prevented from entering the gas inlet pipe to block the gas inlet pipe, and meanwhile, to-be-treated gas entering the absorption tower can be more uniformly dispersed in the absorption tower.

The utility model discloses a water treatment filler for efficient biological enrichment, which comprises a filler body and is characterized in that the filler body comprises a modified polypropylene middle rope, and a modified fiber carrier and a plurality of modified polypropylene coils are arranged around the modified polypropylene middle rope. The filler is formed by weaving three modified polypropylene materials, the filler is similar to a column and has a larger contact area with activated sludge in water, and the skeleton modified polypropylene coil on the filler is higher in strength and has a good'cutting effect 'on water flow and bubbles, so that the activated sludge can be effectively separated from the filler. The air bubbles are cut into smaller air bubbles after encountering the modified polypropylene coil in the rising process, the rising speed is delayed, at the moment, the modified fiber carrier can adsorb more oxygen, the retention time of air in water is obviously prolonged, the oxygen storage function is achieved, and the adsorption capacity is high.

The utility model belongs to the technical field of water purifiers, and particularly relates to anti-splashing commercial water purification equipment which comprises a main body, a water outlet control end is arranged at the upper end of the main body, two water outlet heads are arranged on the lower surface of the water outlet control end, and a water receiving box is arranged on one side face of the main body and located under the two water outlet heads. A first cup base and a second cup base are installed on the inner side of the water receiving box, a cup base lifting piece is installed in the main body, and water receiving box fixing pins are installed on one side of the first cup base and one side of the second cup base. The water purification equipment can limit the rising speed and height when the first cup base and the second cup base rise, prevents the cup from falling off due to impact or prevents the water outlet head from being directly inserted into the cup opening during rising, and meanwhile, the water purification equipment can be used for cups with different sizes due to the arrangement of the first cup base and the second cup base at different heights, so that the water purification equipment is convenient to use. The situation that water is splashed in the water receiving process is prevented, and drinking water resources are further saved.

To properly estimate a flooding start date and time which are a date and time when flooding of a ground surface starts.SOLUTION: A flood estimation system 100 includes: a first water level sensor 21 which is a water level sensor 2 disposed at a first distance L1 from a ground level SF; a second water level sensor 22 which is a water level sensor 2 disposed at a second distance L2 shorter than the first distance L1 from the ground level SF; and a flood estimation device 1. The flood estimation device 1 includes: a first estimation unit 112 that estimates an ascending speed V which is a speed at which the groundwater ascends, based on an inter-sensor distance LS which is the distances from the first water level sensor 21 to the second water level sensor 22, and an ascending time TU which is the time for the groundwater to ascend from the position of the first water level sensor 21 to the position of the second water level sensor 22; and a second estimation unit 113 that estimates a flood start date and time TW which is the date and time at which flooding of the ground level SF starts, based on the ascending speed V.SELECTED DRAWING: Figure 3

The invention discloses a chemical tail gas treatment device, and relates to the technical field of chemical tail gas treatment devices.The chemical tail gas treatment device comprises a treatment box, a gas inlet pipe is fixed to the left side of the treatment box, a liquid inlet pipe is fixed to the right side of the treatment box, and an exhaust pipe is fixed to the right side of the treatment box; and a liquid discharging pipe is fixed to the right side of the treatment box, an impurity discharging opening is formed in the right side of the treatment box, and a circulating device for conducting secondary treatment on tail gas is arranged in the treatment box. When the chemical tail gas treatment device is used for treating tail gas, the motor drives the rotating shaft to rotate, so that the spoilers on the outer wall of the rotating shaft also rotate, turbulent flow is carried out above reaction liquid, and tail gas which cannot completely react due to too high rising speed when the tail gas is introduced into the reaction liquid is scattered, so that the tail gas is more uniformly distributed above the liquid level; the local concentration is prevented from being too high or lower, and the problem that the tail gas treatment effect difference is large is solved.

The invention discloses a method for determining the water accumulation speed and emergency disposal safety near a reverse slope TBM tunnel water burst tunnel face. The method comprises the steps that (1) the relation between the emergency disposal time and the effective water storage volume of a tunnel and the relation between the emergency disposal time and the water pumping and draining speed near the tunnel face are established; 2) establishing a relational expression among the accumulated water speed near the tunnel net water gushing tunnel face, the accumulated water level of the tunnel face and the rising speed of the accumulated water level of the tunnel face; 3) constructing a three-dimensional model for calculating the effective water storage volume near the tunnel face, and calculating the effective water storage volume; (4) measuring the accumulated water level and the accumulated water level rising speed near the tunnel face on site; 5) calculating the speed of accumulated water near the net water gushing tunnel face of the tunnel; by establishing a relation model of the emergency disposal time and the water storage volume, constructing a three-dimensional water storage volume calculation model and combining real-time water level monitoring data, the water accumulation speed and the emergency disposal time can be accurately calculated, and the method has the advantages that the accuracy of emergency disposal decision making is improved, and the operation reliability of equipment is guaranteed.

The utility model discloses an efficient arsenic trichloride reduction device, which belongs to the technical field of reduction reaction and comprises a reaction kettle, a gas uniformizing device is mounted in the reaction kettle and comprises a mounting rack, a motor is fixedly mounted at the top of the mounting rack, an output shaft of the motor is connected with an outer gear, and the outer gear is connected with an inner gear. The outer wall of the outer gear is meshed with a gear ring; according to the gas uniformizing device, a motor drives a gear ring to rotate through a gear, so that the gear ring drives a rotating pipe to rotate on the outer wall of an external pipe, a transmission pipe drives a dispersing box to rotate, the dispersing box drives a connecting box to rotate, and then the connecting box drives a spray head to rotate; the nozzle drives the introduced hydrogen to move to form a relatively small gas mass, and the rising speed of the relatively small gas mass is slower than that of a relatively large gas mass, so that the hydrogen is uniformly dispersed in the arsenic trichloride and is fully contacted and reacted with the arsenic trichloride, and the reaction efficiency is improved.

The application provides a space free-flowing combustion method driven by kinetic energy conversion, and relates to the technical field of boiler combustion, and comprises the following steps: calculating total feeding amount according to total fuel demand of a boiler, and respectively feeding fuel to a bottom bed and a space pneumatic screening bed through a layered feeding device, and simultaneously igniting; feeding air to the bottom bed and the space pneumatic screening bed through primary air and secondary air according to total air required by the boiler combustion; adjusting the falling or rising speed of the fuel by adjusting the ratio of the primary air to the secondary air according to the particle size of the fuel; monitoring the smoke temperature in real time, and feeding the layered feeding device when the smoke temperature reaches the ignition point of the fuel; and under the action of buoyancy, gravity and suction force, the coal particles on the space pneumatic screening bed rely on the change of the kinetic energy of the coal particles. The application enables the coal particles to form microcirculation in the furnace, improves the burnout rate of the coal particles, reduces the carbon content of the ash, reduces the wear of the structure of the boiler, and prolongs the stable operation period.

This application discloses a drying device for preparing functional chitosan, comprising a blower, a heating channel, a drying section, a cyclone separator, a bag filter, and an induced draft fan connected in sequence. The bottom of the cyclone separator is used for material discharge, and the top of the cyclone separator is connected to the bag filter via a connecting pipe. In this drying device, the bottom of the cyclone separator collects the dried material. Undried material is blocked by the grading ring, and material that is not fully dried and does not rise quickly enough is blocked by the rotating grid, thus falling and continuing to dry, thereby improving the drying effect. By raising and lowering the electric telescopic rod, the baffles and rotating grid can be shaken, which can effectively clean the residual material at the grading ring and rotating grid. After the material falls, it continues to dry, resulting in a good drying effect.

A method of treating wastewater in a moving bed bioreactor (MBBR) is described. The MBBR includes one or more upflow gravitational separation devices disposed about the discharge area of the reactor. As treated effluent flows upwardly through the one or more gravitational separation devices, suspended solids in the treated effluent are separated. The present invention entails a method or process where the effective cross-sectional area of the one or more gravitational separation devices can be varied and controlled. This in turn varies and controls the upflow velocity of the treated effluent. By varying and controlling the effective cross-sectional area of the one or more gravitational separation devices, the degree to which suspended solids are separated from the treated effluent is controlled.

The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment device of a biological aerated filter. Comprising a tank body with an opening in the top end, a transverse plate is fixedly installed in the tank body, an air injection box is fixedly installed at the top of the transverse plate, a plurality of evenly-distributed air injection holes are formed in the inner wall of the top of the air injection box in a penetrating mode, a cylinder is rotatably installed in the tank body, and a plurality of evenly-distributed shifting plates are fixedly installed on the inner walls of the two sides of the cylinder; and a brush plate is fixedly installed in the cylinder and makes contact with the top of the air injection box, an air pump is arranged on one side of the tank body, a first air guide pipe is arranged on the air pump, and one end of the first air guide pipe extends into the tank body. Through a simple stirring structure, aeration bubbles can be conveniently stirred, so that the rising speed of the bubbles can be effectively delayed, the sewage oxygen dissolving effect can be improved, the culture of microorganisms is facilitated, and great convenience is brought to the aeration treatment work of sewage.

The invention relates to the technical field of information, and discloses a water immersion alarm method based on an intelligent waterproof baffle and a storage medium, and the method comprises the steps: collecting the water level data in a power distribution room and the surface humidity data of a water blocking strip in real time, and determining the current water level rising speed and the initial expansion state of the water blocking strip; the incidence relation between water level rising and water blocking strip expansion is recognized; the expansion rate distribution of the water blocking strip in different areas is identified according to the incidence relation between the water level rising and the expansion of the water blocking strip, and the expansion non-uniformity degree is obtained by comparing the expansion rate differences between the different areas; if the matching degree is lower than a preset matching threshold value, determining an alarm threshold value according to the potential position of the water leakage channel and the expansion non-uniformity degree; water level alarm key parameters are extracted according to the accurate water level early warning signal, and an execution path of intelligent response about water level abnormity of the power distribution room is determined according to the water level alarm key parameters and the early warning signal type, so that the reliability of a waterproof system of the power distribution room is improved, and the water immersion risk of the power distribution room is reduced.

The utility model relates to a sewage treatment equipment for environmental protection engineering belongs to sewage treatment technical field, in order to solve the problem that the bubble diameter generated by traditional aeration is usually larger, the rising speed is faster, the oxygen utilization rate is lower, and cannot form the full mixing with sewage, the utility model discloses sewage treatment tank and the oxygen cavity of opening in sewage treatment tank inside, sewage treatment tank both sides are installed with pump body, a plurality of jet elements are fixedly installed in the oxygen cavity, and the pump body is communicated with a plurality of jet elements through the pipeline, and the one end of jet element is installed with suction shell, and the one side of suction shell is communicated with the water outlet pipe, and the rotating part is installed in the water outlet pipe, the utility model discloses through the treatment of jet breaking and rotary shearing, the bubble diameter is significantly reduced, and the specific surface area is greatly increased, and the rising path of bubble is changed by swing plate, prolongs its residence time in sewage, makes oxygen have more sufficient time to dissolve, effectively solves the problem that the oxygen utilization rate of traditional aeration is low.

This invention discloses a direct-drive floating roof with a flexible device for use within oil tanks, relating to the field of floating roof technology for oil tanks. It employs a telescopic hydraulic cylinder to directly drive the floating roof's up-and-down movement, eliminating numerous transmission components. Simultaneously, a flexible device is installed on the floating roof. When the oil inflow rate from the storage tank exceeds the floating roof's ascent rate, the bladder in the flexible device inflates, absorbing some of the oil and reducing the pressure exerted on the floating roof. Similarly, when oil is discharged from the storage tank, if the floating roof's descent rate is less than the oil outflow rate, the bladder in the flexible device inflates downwards, absorbing some of the air above the floating roof and reducing the air pressure exerted on it, effectively protecting the floating roof structure and its related components. This invention eliminates the support pillars and numerous transmission structures found in traditional floating roofs, resulting in a compact structure and high energy efficiency. The flexible device of the floating roof provides excellent cushioning, reducing the pressure of oil on the floating roof and effectively protecting it and its related components.

The utility model discloses a biodiesel tail gas washing device, including a spray tower, an air intake mechanism and two washing mechanisms, belonging to the field of biodiesel technology, and solving the technical problems that some spray towers have insufficient contact and mixing of washing liquid and gas, short contact time leading to poor effect of washing liquid in absorbing harmful gases, difficulty in production due to overall forming of fillers, and low utilization rate of washing liquid. The cooling mechanism of the utility model cools the biodiesel tail gas, slows down the rising speed of the tail gas in the spray tower, and prolongs the contact time between the tail gas and the washing liquid; multiple filler units are stacked in an orderly staggered manner, and the rising tail gas is diverted multiple times, so that the tail gas is dispersed in an orderly manner, which is conducive to the contact and mixing of the tail gas and the washing liquid; the upwardly inclined amplification chamber encloses the washing liquid sprayed from the nozzle, so that the washing liquid is sprayed onto the filler amplification layer, preventing the washing liquid from being sprayed excessively onto the inner wall of the spray tower, and improving the utilization rate of the washing liquid.

This utility model relates to the field of waste gas treatment technology, specifically a biochemical wastewater deodorization treatment device. It includes an absorption tower and an auxiliary tower. The auxiliary tower has a liquid inlet pipe at its top and an air inlet pipe at its bottom. An exhaust fan is located at the top of the auxiliary tower, and a gas guiding device is installed inside the auxiliary tower to slow down the gas's upward velocity. This utility model has a reasonable and compact structure and is easy to use. After the waste gas enters the auxiliary tower through the air inlet pipe, it spirals upward within the auxiliary tower under the guidance of the exhaust fan and the gas guiding device, thereby increasing the residence time of the waste gas in the auxiliary tower. Water is added to the auxiliary tower through the liquid inlet pipe, dissolving the odorous substances in the waste gas. The water containing the dissolved odorous substances is transported to the absorption tower through a pipeline and sprayed from a spray plate onto the adsorption device, further dissolving and absorbing the odorous substances in the waste gas, thus decomposing and transforming the odorous substances. It features stability, high efficiency, and excellent deodorization effect.

The invention discloses a system for rapidly adjusting the conductivity of raw water and a control method thereof. Conductivity sensors are arranged at the water tank, the electrolytic bath waterway outlet, the electrolytic bath waterway inlet and the circulating pump outlet in the electrolytic water waterway circulating system; the conductivity sensors are respectively positioned at the bottom of the water tank and in front of a circulating water inlet of the water tank; a drainage switch valve is arranged at an outlet of the circulating pump; the deionizer returns to the water tank in a manner of being connected with main circulating water in parallel, and is controlled to be switched on and off through a switching valve; the water tank is provided with a liquid level sensor for monitoring whether water in the water tank is sufficient or not. According to the method, the rising speed of the conductivity in the loop is judged, the rising position and the conductivity value are combined for judgment, and different processing methods are adopted, so that the purpose of reducing the conductivity in the loop is achieved. The system shutdown frequency can be effectively reduced, stable operation of the water electrolysis system is guaranteed, and meanwhile waste of raw material water is reduced.

The present invention relates to the technical field of waste gas treatment, and provides a waste gas treatment device for a chemical reaction kettle, including a base. On one side of the top of the base, a liquid adsorption assembly is provided. The liquid adsorption assembly includes a spray adsorption treatment tank. On one side of the spray adsorption treatment tank at the top of the base, a heating assembly is provided; in the present invention, waste gas enters the gas distribution plate and is ejected through the small holes on the gas distribution plate to form small bubbles in the liquid. The rising speed of the small bubbles is slower, which helps the components in the gas to be adsorbed by the liquid. Start the motor, the motor drives the rotating rod to rotate, the rotating rod drives the stirring blade and the bubble dispersion plate to work. The stirring blade stirs the liquid, so that the small bubbles stay in the liquid for a longer time and are fully mixed. The bubble dispersion plate reciprocates up and down through the reciprocating groove, so as to squeeze the liquid and the small bubbles, thereby increasing the gas fusion. And a number of small holes are provided on the bubble dispersion plate, which can limit the rising speed of the gas and improve the adsorption effect.

The present invention discloses a structure of a diversion tunnel group of an ultra-high rockfill dam and a method for closing the gates and blocking the same, and belongs to the technical field of water conservancy and hydropower engineering. The present invention ingeniously optimizes the closing and blocking procedures, and adopts multi-stage controlled discharge and water storage through tunnels at various levels and corresponding arc gates, so as to realize the continuous flow of water supply during the closing and blocking of diversion tunnels at various levels. At the same time, through the controlled discharge and water storage at various stages, when the water storage reaches a certain height, the water storage rising speed can be effectively controlled, and the requirements for the water storage rising speed during the water storage process of ultra-high dams at various stages can be met; in addition, temporary plugs are set in the initial and middle diversion tunnels to block water, replacing the situation of water blocking by flat gates in traditional thinking, which greatly reduces the water head requirements for the blocking gates of the initial and middle diversion tunnels, improves the safety of gate water blocking and structural pressure resistance, and can significantly reduce the scale of the blocking gate and hoist system, saving engineering investment.

The invention relates to the technical field of water treatment, and particularly provides a sludge discharge control parameter determination method, a sludge discharge control method, a sludge discharge control device and electronic equipment. The sludge discharge control parameter determination method comprises the following steps: acquiring water inlet flow of a clarification tank and a preset sludge layer height threshold range; determining a sedimentation area range of the clarification tank in a mud layer height threshold range; and based on the water inlet flow and the sedimentation area range, determining an ascending velocity range as a sludge sedimentation velocity target range, and taking the sludge sedimentation velocity target range as a sludge discharge control parameter. According to the technical scheme, under the condition that the water amount of the clarification tank is changed, the target range of the sludge settling speed can still be generated to serve as the sludge discharge control parameter, manual adjustment is not needed, and the sludge settling state is better when sludge discharge control is executed based on the sludge discharge control parameter.

This invention relates to the field of casting molding technology and discloses a foam model gasification control process in lost foam casting. The process includes: collecting real-time pressure and ambient negative pressure along the suction path within the sand box; determining the sand layer permeability resistance coefficient based on the pressure difference and filling distance; determining the set pressure of the target suction path based on the model's characteristic length; controlling the output pulse of the target suction path to enhance negative pressure as the filling front approaches; and adjusting the opening of the gate valve in the casting pouring channel to reduce the rising speed of the molten metal when the permeability resistance coefficient exceeds a threshold. This invention achieves multi-loop spatial coordinated adjustment of the negative pressure amplitude and filling speed, ensuring that the negative pressure flow resistance field matches the gasification release distribution, eliminating localized air gap blockage, enabling directional and rapid gas discharge, maintaining the stability of the dry sand mold wall, and preventing air entrapment and box collapse in the casting.

The invention discloses a dedusting and cooling device for aluminum fluoride production, and relates to the technical field of aluminum fluoride production. The device comprises a cooling unit and a dust removal unit, the cooling unit comprises a treatment box, a water tank is fixedly mounted on the inner wall of the treatment box, an air inlet pipe is fixedly mounted at the bottom of the treatment box, one end of the air inlet pipe communicates with the bottom wall of the water tank, and an exhaust pipe is fixedly mounted on one side of the treatment box; according to the tail gas cooling device, a plurality of baffles in the quantity control mechanism are driven to slowly rotate in the water tank, the ascending speed of tail gas in the water tank is controlled by controlling the size of gaps between the baffles and the side wall of the water tank, and the retention time of the tail gas in the water tank is prolonged, so that the cooling effect of the tail gas is improved; and the water storage disc enables the water storage pipeline and the conical cover to perform circumferential revolution through the connecting pipe, and the conical cover enables cooling water to be in full contact with the tail gas flowing upwards in the circumferential revolution process, so that the cooling effect of the tail gas is further improved.

The invention discloses a method for controlling oxygen supply flow in stages during converter blowing, which relates to the technical field of metallurgy and comprises the following steps: calculating the total amount of converter smelting oxygen blowing based on the total loading amount of converter molten iron and scrap steel and molten iron component information; converter smelting is conducted, and the oxygen supply flow and the blowing lance position are adjusted according to the carbon monoxide concentration rising speed; and finishing smelting when the carbon monoxide concentration is reduced to a threshold value. According to the CO concentration change trend, the original constant-pressure lance changing operation is optimized into variable-pressure lance changing operation according to different carbon content reaction stages, so that the problem of smoke overflow caused by the fact that smoke cannot be sucked away by dust due to the fact that carbon-oxygen reaction is too violent is solved, explosive splashing in the peak period of the carbon-oxygen reaction is relieved, and the service life of the carbon-oxygen reaction is prolonged. And meanwhile, the process requirements of converter slagging, dephosphorization and decarbonization are met, and the production requirements of converter smelting can be met.