44results about How to "Small bubble size" patented technology

The invention discloses an airlift reactor having a spiral porous sieve plate. The reactor includes a reaction tank body. A flow guide cylinder and a gas distributor are arranged in the reaction tank body. The gas distributor is disposed under a raising section of the flow guide cylinder. A spiral porous sieve plate is arranged in the raising section of the flow guide cylinder. The body of the spiral porous sieve plate is in a spirally raising shape, so that a part of two / three-phased flow in the raising section is guided. There are a plurality of sieve pores in the body of the spiral porous sieve plate, so that the rest of the two / three-phased flow in the raising section is subjected to flow guiding and bubble breaking. The airlift reactor considers both macroscope mixing and microscope mixing, wherein the liquid is driven by ejected gas to flow cyclically, so that raising large bubbles are broken into small bubbles. The reactor can effectively inhibit aggregation of bubbles, increases gas holdup, and increases volume mass transfer coefficient.

The invention discloses a generating device of oily water with micro bubbles, including an air-containing water generator (1); the air-containing water generator (1) consists of a columnar container (4) and a spiral-flow type air-containing water generation tub (5) in the columnar container, the place in the columnar container (4) which is positioned between a water inlet (41) and an air inlet (42) is provided with a first separation sealing plate (44), the place in the columnar container which is positioned below the air inlet (42) is provided with a second separation sealing plate (45), thespiral-flow type air-containing water generation tub (5) consists of a columnar sealed tube part (51), a conical sealed tube part (52) and a microporous tube part (53); wherein, the side wall of the columnar sealed tube part (51) is provided with a tangential diversion port (51a), an opening (53a) at the bottom of the microporous tube part (53) is communicated with a draining cavity (C) of the columnar container (4). Compared with the prior art, the bubbles in the oily water with micro bubbles generated by the device of the invention have smaller diameters and are subtler, therefore, the oil removal effect of following treatment technique can be more ideal.

The invention discloses a micro-bubble generator and a gas-liquid reactor containing the micro-bubble generator. The micro-bubble generator is composed of a liquid inlet pipe, an air inlet hole and a Venturi tube, and the Venturi tube includes at least one A tapered section, a throat section and a divergent section with a closed bottom, the liquid inlet pipe is located at the bottom of the Venturi tube tapered section, and the air inlet is located in the throat section. The invention has the advantages of compact structure, low energy consumption, good micro-bubble generating effect, convenient maintenance and the like. After using the microbubble generator in the gas-liquid reactor, the gas-liquid mass transfer efficiency is greatly improved.

A spray solution generates a foam to sanitize surfaces. The spray dip solution is a mixture of the solution with carbon dioxide and nitrous oxide in a closed vessel. After ejecting the liquid dip solution mixture from a nozzle a foam is generated from the solution as the solution hits a surface. The spray can be applied to a number of different surfaces. In an embodiment of the invention, the spray can be applied to cow teats without risk of cross-contamination of the nozzle or other equipment. The generated foam remains intact on the teat for a prolonged period of time, increases the area of the teat in contact with the foam during the treatment period and disperses skin-conditioning fats present in the dip treatment, thereby increasing the coverage of the skin conditioner on and within the epidermis of the teat and surrounding areas.

The invention discloses an air injection device for a subsurface drip irrigation system. A subsurface drip irrigation system is started, an air inlet gate valve is switched on, and water with pressure from the head of the subsurface drip irrigation system is injected out at a high speed from the injection orifice of an ejector nozzle to form negative pressure in an air injection cavity; under the action of the negative pressure, air enters the air injection cavity from an air filter, the air inlet gate valve, a check valve and an air inlet pipe; the air and high-speed flow ejected out of the ejector nozzle enter a primary oscillation cavity via a round throat path of which the diameter is d1 to carry out primary vortex oscillation stirring 'aerification'; then, the mixture enters a secondary oscillation cavity via a round throat path of which the diameter is d2 to carry out secondary vortex oscillation stirring 'aerification'; and finally, the mixture enters the subsurface drip irrigation system via a round throat path of which the diameter is d3 and a gradual-change runner. The air injection device has the advantages of good air injection effect, high aerification rate and low input and operation cost, is simple and durable, does not need additional pressurized driving devices and is especially favorable for improving the anti-blockage performance of the injection device.

A spray solution generates a foam to sanitize surfaces. The spray dip solution is a mixture of the solution with carbon dioxide and nitrous oxide in a closed vessel. After ejecting the liquid dip solution mixture from a nozzle a foam is generated from the solution as the solution hits a surface. The spray can be applied to a number of different surfaces. In an embodiment of the invention, the spray can be applied to cow teats without risk of cross-contamination of the nozzle or other equipment. The generated foam remains intact on the teat for a prolonged period of time, increases the area of the teat in contact with the foam during the treatment period and disperses skin-conditioning fats present in the dip treatment, thereby increasing the coverage of the skin conditioner on and within the epidermis of the teat and surrounding areas.

The invention relates to a method and a device for dissolving gas in a liquid-phase circulating hydrodesulfurization system, and provides a method for dissolving gas in a liquid-phase circulating hydrodesulfurization system, which comprises the following steps of: introducing new hydrogen, raw oil and circulating saturated oil refluxed from a hydrogenation reactor into a gas-liquid mixing pump, and fully mixing under the strong turbulence state; introducing the mixed materials into a gas-liquid separation tank, collecting big bubbles, removing the big bubbles, and introducing the mixed materials into the hydrogenation reactor for hydrogenation; and introducing the circulating saturated oil refluxed from the hydrogenation reactor into the gas-liquid mixing pump again, mixing with the raw oil and the new hydrogen entering the gas-liquid mixing pump, and introducing the mixture into the hydrogenation reactor again. The invention also provides a device for dissolving gas in the liquid-phase circulating hydrodesulfurization system.

The invention relates to a new technology of micro-nano bubble flocculation-air flotation. The micro-nano bubble introduction system of the present invention is connected to the aeration head, the PAC dosing system and the PAM dosing system are connected to the source water lifting system, the source water lifting system is connected to the water distribution head, and the lifting bucket and lifting impeller are arranged in the middle of the flocculation-air flotation area , the lifting impeller is connected to the motor; the lower part of the flocculation-air flotation area enters the water distribution area, the upper part of the inclined tube area is connected to the water outlet, and the lower part is connected to the concentration area. The invention overcomes the problems of poor mechanical flocculation effect, large dosage of PAC agent, additional addition of PAM coagulant and environmental pollution caused by high-efficiency precipitation technology. The present invention utilizes the micro-nano bubbles to suck air into the pump through the suction of the multiphase flow pump, and generates them through the high-speed cutting of the impeller, and can also be generated by using a special micro-nano bubble generating device. Compared with the bubbles released by traditional pressurized tanks, micro-nano bubbles have the characteristics of small bubble size, large specific surface area, high adsorption efficiency, and slow rising speed in water.