24 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 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 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 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 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.

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 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.

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.

The invention belongs to the technical field of wastewater biological treatment, and discloses a quantitative sludge screening method for continuous flow reactor aerobic granular sludge culture. Aiming at the problems that the aerobic granular sludge in a continuous flow reactor is difficult to culture stably and the traditional screening technology is poor in universality and high in transformation cost, a modular built-in screening device is adopted to form a selective pressure area capable of regulating and controlling the ascending velocity, a quantitative regulation and control model is constructed in combination with fluid mechanics simulation and a 3D response surface method, and the hydraulic selective pressure is accurately controlled; flocculent sludge is discharged, and granular sludge flows back. The method does not need to modify a reactor main body, and is high in adaptability and low in cost. After the method is practically applied for 182 days, the proportion of the sludge with the particle size larger than or equal to 200 microns reaches 80.312%, directional transformation is achieved, and a scheme capable of being popularized is provided for low-cost upgrading of a wastewater treatment plant.

The invention discloses a high-density-ratio bubble rising behavior numerical calculation method based on LSMPS. The method is specifically implemented according to the following steps that 1, a two-dimensional axisymmetric single bubble rising calculation model is established based on a meshless moving particle semi-implicit method; 2, calculating the temporary speed of the particles; 3, calculating the pressure of gas particles and interface node particles; step 4, calculating pressure jump of interface node particles; 5, calculating the pressure of the liquid particles; step 6, correcting the speed of the particles; 7, updating the positions of the particles and the interface node particles; and step 8, analog calculation and result export. According to the method, an axial symmetry model is adopted, rising behaviors of air bubbles in water and nitrogen bubbles in lead-bismuth alloy are numerically simulated, evolution of a bubble interface can be accurately captured, the total rising speed of the bubbles and the change rule of the speeds of the tops and the bottoms of the bubbles are analyzed, and the evolution process of the mass center height, the size, the surface area and the aspect ratio of the bubbles along with time is obtained.

The invention relates to an intelligent control method based on gas thermal plume detection, an intelligent range hood and a system, and the method comprises the steps: obtaining a thermal image sequence after the intelligent range hood is started; the thermal image sequence is obtained by continuously detecting thermal plume generated during combustion of the gas stove; based on the thermal image sequence, analyzing the motion condition of thermal plaques in the thermal image sequence so as to calculate the rising speed of the thermal plume; based on the rising speed, the working gear of the intelligent range hood is adjusted, the problem that the control reliability of the intelligent range hood in range hood and stove linkage is poor is solved, the non-contact monitoring precision and efficiency of the working state of the gas stove can be improved by detecting the hot plume generated by gas combustion, lampblack and waste gas in a kitchen are exhausted in time, and the safety of the kitchen is improved. The reliability of intelligent control of the intelligent range hood is improved, and better cooking experience is provided for users.

A method of treating wastewater in a moving bed bioreactor (MBBR) is described. The MBBR includes one or more upflowing gravity separation devices positioned proximate to a discharge area of the reactor. As the treated effluent upflows through the one or more gravity separation devices, suspended solids in the treated effluent are separated. The invention relates to a method or process in which the effective cross-sectional area of the one or more gravity 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 gravity separation devices, the degree of separation of suspended solids from the treated effluent is controlled.

This invention discloses an integrated wastewater treatment device and method for enrichment and in-situ digestion. The method operates cyclically within a reactor, with each cycle comprising: an enrichment and adsorption stage, in which organic wastewater is introduced into the reactor; by controlling the influent and internal circulation, a hydraulic upflow velocity is created within the reactor, causing the anaerobic granular sludge bed to expand; this hydraulic condition induces the granular sludge to secrete extracellular polymers and utilizes the anaerobic granular sludge and its extracellular polymers to adsorb and enrich dissolved organic matter in the influent; and an in-situ digestion and regeneration stage, in which the influent is stopped, and under continuous internal circulation and anaerobic conditions, the inherent methanogenic bacteria within the granular sludge convert organic matter into methane in situ. This biodegradation process simultaneously regenerates the adsorption sites of the granular sludge, preparing for the next cycle. This invention couples the bio-adsorption enrichment and anaerobic digestion processes within the same reaction space through time-series switching.

To sufficiently visually recognize a stirring state in a stirring tank and to prevent the breakage of the stirring tank.SOLUTION: A stirring device for stirring a liquid or a mixture of a liquid and a solid, the stirring device including a stirring tank (10) having an open top surface and an inside visible at least from a side surface, a lid (20) having a close contact portion on one surface, the close contact portion being capable of coming into close contact with an upper surface of a side wall of the stirring tank, and a stirring tank driver that raises and lowers the stirring tank to an upper limit position, an intermediate position, and a lower limit position; And a lid portion intermediate position stop portion that prevents the lid portion from being lowered to a lower limit position, wherein the stirring tank drive portion reduces a rising speed when a distance between the stirring tank and the lid portion approaches a predetermined range during rising of the stirring tank.SELECTED DRAWING: Figure 1