50results about How to "Easy to clean and regenerate" patented technology

The invention relates to a city tap water supplying and cleaning device and in particular relates to a water-supply pipeline filtering device. The water-supply pipeline filtering device comprises a connecting barrel with flange plates at two ends, wherein the pipe diameter of the middle part of the connecting barrel is greater than the pipe diameters of two ends of the connecting barrel, a tubular filter screen is arranged in the connecting barrel, one end of the filter screen is fixedly connected with the water inlet end of the connecting barrel, a sheet-like water guide valve is arranged in the filter screen, the water guide valve is the same as the cross section of the inner pore of the filter screen in shape, the water guide valve is connected to a handle on the outer wall of the connecting barrel by a valve rod, the other end of the filter screen is closed, a blow-off pipe introduced into the filter screen is arranged at the closed end of the filter screen, the other end of the blow-off pipe is arranged outside the connecting barrel and is sealed by a cover, a pressure spring is arranged between the closed end of the filter screen and the water guide valve, and the outer diameter of the pressure spring pushes against the inner wall of the filter screen. According to the water-supply pipeline filtering device, tap water can be filtered, and the filtering device can be cleaned and regenerated well.

The invention relates to the field of analysis, in particular to a method for purifying EPA from fish oil. The method provided by the invention has high selectivity and separation efficiency, and has a good separation effect on EPA, DHA and other impurities; it has certain selective adsorption on unsaturated fatty acids and impurities in fish oil, and has a high sample loading capacity; using organic The mobile phase of solvent or organic solvent / water system, the solvent can be recycled and reused, reducing the cost of industrialization.

The invention discloses a preparation method and application method of a water-based drilling cutting adsorptive filter material. The adsorptive filter material comprises the following components in parts by weight: 100 parts of water-based drilling cuttings, 0 to 30 parts of composite reinforcing agents, 2 to 30 parts of forming agents, 0 to 20 parts of air entraining agents and 2 to 20 parts of water; the composite reinforcing agent is one or a combination of more of a silicon-oxygen compound, diatomaceous earth and fly ash; the forming agent is a hydrophilic polymer compound and / or clay; the air entraining agent is sodium carbonate and / or sodium bicarbonate; the preparation method comprises the following steps: (1) uniformly mixing the water-based drilling cuttings, the composite reinforcing agents, the forming agents, the air entraining agent, other auxiliaries and water, then performing granulation and forming; (2) roasting after preheating, thus obtaining ceramsite adsorptive filter material. The adsorptive filter material prepared by the method is well-developed in pore structure, larger in specific surface area, higher in compressive strength and better in adsorption effects, and the physical property indexes of the adsorptive filter material are obviously superior to the industry standards of China.

The invention discloses a chromatographic medium with aminobenzene (sulf)amide pyridine as a functional ligand and application of the chromatography medium. A preparation method for the chromatographic medium comprises the following steps: with hydrophilic porous microspheres as a chromatographic matrix, sequentially adding dimethyl sulfoxide and allyl bromide into the chromatographic matrix for activation; enabling the activated chromatographic matrix to react with N-bromo-succinimide, and carrying out bromo-alcoholization; coupling the chromatographic matrix having undergone bromo-alcoholization with the aminobenzene (sulf)amide pyridine ligand; and finally, closing an unreacted bromo-alcoholized tail end by adopting an aqueous ethanol amine solution to obtain the mixed-mode chromatographic medium with aminobenzene (sulf)amide pyridine as a functional group. The novel chromatographic medium disclosed by the invention can be combined with IgG type broad-spectrum antibody molecules andhas the characteristics of high antibody adsorption capacity, high selectivity and non-salt dependent adsorption; desorption and recovery can be realized by changing the pH value of a solution to beslightly smaller than 7; preparation process is simple and convenient, and price is low; and the chromatographic medium can be used for chromatographic separation of broad-spectrum IgG type antibodies, including polyclonal antibodies in blood and monoclonal antibody drugs expressed by cells.