52results about How to "No reflow required" patented technology

The invention provides a preparation method of spinnable silicon-aluminum sol. The preparation method includes: using amorphous-state aluminum hydroxide synthesized by inorganic aluminum salt and alkaline liquor as the aluminum source, adding formic acid and acetic acid to prepare aluminum sol, mixing the aluminum sol with newly prepared acid silica sol of different proportions, and performing concentration and aging to obtain the spinnable silicon-aluminum sol. The preparation method has the advantages that the silicon-aluminum sol prepared by the method is stable in property and capable of being stored for a long time without coagulation and deterioration, the prepared spinnable sol can be prepared into alumina ceramic fiber cotton through centrifugal swinging or blowing, and the sol canbe prepared into alumina ceramic continuous fibers through dry spinning; the preparation method is simple in process, short in flow, green and free of pollution, low in cost and easy to achieve large-scale preparation.

The invention relates to a reactor with nitrification and denitrification function. The reactor comprises an inner barrel, an outer barrel, a sewage inlet, a water inlet, a water outlet, an inner tube, a circular seal head, a flat seal head, a sludge discharging hopper, a filler, an aerating apparatus, a microfiltration membrane separator and an ozone device, wherein the circuit seal head is connected at the upper end of the inner barrel, and the sludge discharging hopper is connected at the lower end of the inner barrel; the inner tube is arranged in the inner barrel, and the aerating apparatus is connected under the inner barrel; the filler is filled in a cavity outside the inner tube; one side of the inner barrel is provided with the sewage inlet, while the other side is provided with the water inlet; the inner barrel is connected with the outer barrel through the water inlet; the upper end of the outer barrel is connected with the flat seal head; the microfiltration membrane separator is arranged in the inner barrel; the upper end of the microfiltration membrane separator is connected with the water outlet, while the lower end is provided with the ozone device; and the lower end of the outer barrel is connected with the sludge discharging hopper. Compared with the prior art, the reactor facilitates biological reaction, has high volume loading and small volume, solves the problem of organic matter blockage of the filtering membrane, and simultaneously sterilizes sewage.