51results about How to "Reduce risk of formation" patented technology

The present invention refers to a process for modifying epoxidized or non-modified vegetable oils. More specifically, it refers to the process through which vegetable oils and alcohols are converted into fatty acid alkyl esters through transesterification. The present invention also refers to the products obtained through the process disclosed herein.

The invention relates to a device and method for removing liquid accumulation in low-lying parts of pipelines and monitoring the concentration of corrosion inhibitors online. The main spinning pipe in the device is connected with the wet natural gas gathering and transportation pipeline inside the acid gas field, and the main spinning pipe is equipped with a spiral flow riser. The cyclone makes the gas annulus in the main pipeline produce gas-liquid two-phase spiral flow and centrifugal separation effect to realize gas-liquid separation; set up a corrugated tube and a droplet catcher to avoid the gas-liquid two-phase flow from forming a slug in the device flow, which affects the separation effect; by measuring the conductivity, temperature and ultrasonic velocity of the effusion in the effusion collection bucket, based on the artificial neural network model, the concentration distribution curve of the corrosion inhibitor is formed to realize the monitoring function of the concentration of the corrosion inhibitor; the concentration of the corrosion inhibitor is constructed The data transmission system ensures that the data is transmitted to the station control room in real time, providing a basis for the optimization of the injection volume of the corrosion inhibitor; the design of the effusion lifting pipeline uses the high-pressure natural gas in the gathering pipeline to lift the effusion in the effusion buffer tank, The effusion enters the ground storage tank and is loaded and transported for disposal.

The conveyor surface (102) to carry cigarette paper (3), for double-filter cigarettes (4), has a number of suction openings (8,10,12,12a) to hold the paper in place. The surface sections (102a) for free paper have at least some suction openings with a decreasing lateral gap (a) between them in the direction of travel (30).

The invention provides a biomedical porous Ti-Zn alloy and a preparation method thereof, comprising the following steps: S1: mixing titanium powder and zinc powder in a certain proportion and then placing them in a stainless steel ball mill for dry mixing; S2: mixing the dry The resulting powder is molded into a compact under the pressure of 500~1000Mpa; S3: The compact and the silicon carbide powder are put into a polycrystalline mullite fiber insulation barrel, and then placed in a microwave sintering furnace. The vacuum degree in the furnace cavity is After pumping to less than 0.1Pa, fill with argon with a purity of 99.999%, control the output power of the microwave sintering furnace, conduct microwave sintering at a certain heating rate, sintering temperature and sintering time, and obtain biomedical porous after cooling with the furnace. Ti‑Zn alloys. The porous Ti-Zn alloy prepared by the invention has low elastic modulus, excellent mechanical properties, good antibacterial effect and good biological activity, and can be used as bone, joint, artificial tooth root and other hard tissue repair and replacement materials.

The invention discloses a long-term anti-freezing antibacterial coating for extracorporeal membrane oxygenation (ECMO) device and a preparation method of the long-term anti-freezing antibacterial coating. The method comprises the following steps: (1) mixing an anti-freezing functional monomer, an antibacterial functional monomer and a film formation agent, and performing a reaction in a mode of free radical polymerization for 10-15 hours at 60-80 DEG C so as to obtain an anti-freezing antibacterial polymer; and (2) mixing the anti-freezing antibacterial polymer with a solvent, so as to obtainthe long-term anti-freezing antibacterial coating. The invention designs the coating with long-term anti-freezing and antibacterial functions simultaneously, and antifouling and sterilization functions can be well combined. With the combination of two functions, an effect of reducing risks of bacterium infection for a long time can be achieved. By reasonably selecting and controlling introductionof antibacterial functional components, the anti-freezing function of the coating can be well maintained.