40 results about "Upflow velocity" patented technology

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 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.

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.

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.

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 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 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.

The application discloses a water purification equipment control method, comprising the following steps: acquiring a first water quality value and a second water quality value of raw water in a raw water storage space of water purification equipment when a pure water backflow pipeline of the water purification equipment is turned on, wherein the collection time of the first water quality value and the second water quality value is different, the pure water backflow pipeline is used for draining pure water in a pure water storage space of the water purification equipment to the raw water storage space, determining a first difference between the first water quality value and the second water quality value, closing the pure water backflow pipeline when the first difference is less than or equal to a first threshold value, and executing a filtering program of the water purification equipment in response to a water making instruction, filtering the raw water in the raw water storage space to the pure water storage space to obtain filtered pure water.

This invention provides an air pollution control device and a method for lithium extraction and co-production of cryolite and lithium phosphate. Relating to the field of air pollution control, the air pollution control device includes a tower placed on the ground. The air pollution control device and method provided by this invention utilize a packing disc to support spherical packing material, allowing sodium hydroxide solution to form a uniform liquid film on the surface of the spherical packing material. By using a sprinkler to slow the flow rate and ensure uniform distribution, the sodium hydroxide solution covers the packing material in the form of fine droplets rather than large streams of water, further increasing the effective contact area with the roasting gas, thereby significantly improving adsorption and separation efficiency. The waterproof plate prevents sodium hydroxide solution from entering the inlet pipe while also slowing the rise and diffusion of the roasting gas. The lower and more uniform flow rate means a longer residence time of the gas in the packing layer, improving mass transfer efficiency and ensuring complete treatment.

The invention discloses bubbling type flue gas desulfurization and denitrification equipment and a bubbling type flue gas desulfurization and denitrification method. The equipment comprises an outer shell, a flue gas injection assembly arranged in the outer shell, a bubble refining disc which is arranged in the outer shell and is positioned below the flue gas injection assembly, and a filtering assembly which is arranged on the outer side wall of the outer shell and is connected with the flue gas injection assembly, the equipment is reasonable in structural design, the smoke nozzle is arranged above the bubble refining disc, so that high-pressure smoke is sprayed into the absorption slurry through the smoke nozzle and impacts the bubble refining disc together with the absorption slurry, smoke bubbles in the absorption slurry are crushed under the impact effect and penetrate through the through holes in the bubble refining disc, and the bubbles in the bubble refining disc are refined. And in the ascending process of the tiny bubbles, due to the blocking effect of the bubble refining disc, the ascending speed is reduced, the contact time of SO2 and NO in the flue gas and the absorption slurry is prolonged, the desulfurization and denitrification effect of the flue gas is improved, and the device is suitable for being popularized and used.

The utility model discloses an ozone multipoint adding reaction device which comprises a reaction tank body, a central pipe is rotatably connected to the inner wall of the reaction tank body, a plurality of rotating pipes are fixedly connected to the side wall of the central pipe, the plurality of rotating pipes are longitudinally and linearly arranged, and the rotating pipes are communicated with the central pipe. A water inlet pipe and a water outlet pipe are arranged on the two sides of the bottom end of the reaction tank body, electric valves are arranged on the middle sections of the water inlet pipe and the water outlet pipe, an ozone generator is installed on the side wall of the reaction tank body, and the output end of the ozone generator is connected with a connecting pipe; the other end of the connecting pipe is communicated with the central pipe through a communicating assembly; by arranging the driving assembly and the central pipe, sewage can be stirred while ozone is injected, so that large bubbles generated when the ozone enters the sewage are reduced, the contact area of the ozone and the sewage is enlarged, and the rising speed of the bubbles in the sewage is slowed down.

The invention relates to the technical field of spray towers, discloses a steel mill waste gas energy-saving combustion treatment device and a use method, and aims to solve the problem that the desulfurization effect is reduced due to the fact that spray liquid of an existing waste gas treatment device is difficult to make full contact with hot gas. By flexibly changing the height position of the nozzle, the spraying angle and the coverage range of the desulfurization liquid can be accurately adjusted, so that the slurry wraps dispersed hot flue gas more comprehensively, deep contact and sufficient reaction of the slurry and the dispersed hot flue gas are realized, and finally, the overall desulfurization effect and the treatment efficiency are remarkably enhanced; the rising speed of hot flue gas in the device can be obviously delayed, the contact reaction time of the hot flue gas and a catalyst is prolonged, the hot flue gas is fully permeated into a catalyst system, deep fusion and efficient reaction of the hot flue gas and the catalyst system are ensured, and finally the overall efficiency of catalytic treatment is greatly improved.

The utility model relates to the technical field of flocculation reaction devices, in particular to a stirring type flocculation reaction device for sewage treatment, which comprises a machine body, a base is arranged at the bottom of the machine body, the base is used for supporting the machine body, a stirring mechanism is arranged on the machine body, and the stirring mechanism comprises an electromagnetic liquid discharge pipe, a water inlet pipe and a water outlet pipe. The electromagnetic liquid discharge pipe is arranged at the bottom of the machine body, and an electromagnetic valve is arranged on the electromagnetic liquid discharge pipe and used for controlling discharge of sewage or reaction liquid; and a high-pressure intake pipe. According to the utility model, the stirring mechanism is arranged, the inclined air jet hole can revolve around the inner wall of the machine body when rotating around the air conveying column, airflow released by the inclined air jet hole has lower shearing force, and the lift force of bubbles and the flowing of the airflow do not directly generate strong shearing force like mechanical stirring; according to the present invention, the damage to the primarily formed floc is avoided, the rising speed of the bubbles is slow, the moderate mixing can be provided, and the floc splitting or fragmentation cannot be caused.

The utility model provides an emulsifying and dispersing mechanism for wash supplies, which belongs to the field of emulsification of wash supplies and comprises an emulsifying pot, a fixing ring, supporting legs and a feeding pipe, the fixing ring is fixedly connected to the outer wall of the emulsifying pot, the supporting legs are fixedly connected to the bottom of the fixing ring, the feeding pipe is fixedly connected to the top of the emulsifying pot, and the feeding pipe is fixedly connected to the outer wall of the emulsifying pot. A stirring assembly is arranged in the emulsifying pot, and an air leakage assembly is arranged in the emulsifying pot. According to the utility model, the stirring paddle is designed to be spiral, the spiral stirring paddle rotates to enable the liquid to form a spirally rising flow field in the container, and bubbles can move upwards along with the liquid after being drawn into the flow field, so that the device has the advantages that the device can guide the bubbles to rise in a larger range; and the rising speed of the bubbles can be controlled by adjusting the rotating speed, so that air in the emulsion is discharged in time, and the problem that the air in the emulsion cannot be discharged in time by an existing emulsifying and dispersing mechanism is solved.

The application relates to the technical field of sewage treatment, and discloses a dimethyl formaldehyde purification device and a use method, which comprise a purification tank and exhaust equipment; a collecting tank is fixedly connected to the top of the purification tank; a motor is arranged on the purification tank; the output end of the motor is fixedly connected with a rotating column; a filtering mechanism for filtering is arranged on the inner wall of the purification tank; the rotating plate can be rotated to increase the uniformity of the contact between the sewage and the heating rod, the purification effect of the device on the sewage can be improved, the device can improve the dimethyl formaldehyde treatment in the sewage, the treatment efficiency of the sewage is improved, the foam on the surface of the sewage can be adsorbed and scraped off by the foam catching plate, the purity and the recovery efficiency of the dimethyl formaldehyde in the sewage can be ensured, the rising speed of the dimethyl formaldehyde gas is prevented from being affected by the foam, the treatment effect of the device on the sewage can be directly improved, and the dimethyl formaldehyde treatment quality in the sewage is improved.

The present invention relates to the technical field of carbon dioxide recovery and refining, and in particular to a low-concentration carbon dioxide recovery and refining device, comprising: a water-washing desulfurization unit, a carbon dioxide absorption unit, including an absorption component and a desorption component; a detection unit for respectively detecting the carbon dioxide concentration, the gas rising velocity at the gas inlet of the second absorption tower, the carbon dioxide absorption amount in the second absorption tower, the flow rate of the feed gas, and the flow rate of the carbon dioxide; and a control unit for respectively determining the pressure and vertical height of the nozzle according to the gas rising velocity and the carbon dioxide absorption amount, and determining the temperature of the rich liquid cooler according to the increase in the carbon dioxide concentration in the first absorption tower. This device solves the problem of low carbon dioxide recovery efficiency caused by the reduced contact area when the carbon dioxide absorbent re-enters the first absorption tower and contacts the feed gas in the prior art.

The invention relates to sewage treatment equipment for environmental protection engineering, belongs to the technical field of sewage treatment, and aims to solve the problems that bubbles generated by a traditional aeration mode are generally larger in diameter, higher in rising speed, lower in oxygen utilization rate and incapable of being fully mixed with sewage, the sewage treatment equipment comprises a sewage treatment box and an aerobic cavity formed in the sewage treatment box, pump bodies are installed on the two sides of the sewage treatment box, a plurality of jet flow pieces are fixedly installed in the aerobic cavity, the pump bodies communicate with the jet flow pieces through pipelines, a suction shell is installed at one end of each jet flow piece, one side of each suction shell communicates with a water outlet pipe, and a rotating piece is installed in the water outlet pipe. The diameter of bubbles is remarkably reduced, the specific surface area is greatly increased, meanwhile, the swing plate changes the rising path of the bubbles, the retention time of the bubbles in sewage is prolonged, oxygen has more sufficient time to be dissolved, and the problem that the oxygen utilization rate of traditional aeration is low is effectively solved.

This invention discloses a method for predicting operational risks of wastewater treatment devices, relating to the field of wastewater treatment technology. The method includes: establishing a fixed correspondence between aerators and corresponding local aeration monitoring areas, forming a standard gas release reference state; extracting continuous high-value areas of local gas-liquid mixing ratio within the target local aeration monitoring area, and connecting these continuously corresponding high-value areas of local gas-liquid mixing ratio at lateral positions in different vertical layers to form a local gas release channel; then extracting and connecting the high-value positions of local upflow velocity to form a local upflow high-value axis; and identifying the lateral contraction state of the local gas release channel. This invention establishes a fixed correspondence between aerators and corresponding local aeration monitoring areas to form a standard gas release reference state; subsequently, it analyzes the continuous high-value areas of local gas-liquid mixing ratio, the local gas release channel, and the local upflow high-value axis.