34results about How to "High descaling rate" patented technology

The invention relates to a reverse osmosis membrane assembly continuous offline cleaning device. The device comprises a plurality of cleaning tanks, and a driving and conveying device, wherein the cleaning tanks are used for soaking and cleaning reverse osmosis membrane assemblies, and are independent from one another; the driving and conveying device is used for driving the reverse osmosis membrane assemblies to be continuously cleaned in the cleaning tanks which are independent from one another. The offline cleaning method is adopted; the polluted membrane assemblies are soaked in the cleaning solution tanks, and parallel connection is adopted by the equipment for simultaneous and separate cleaning of the multiple membrane assemblies; a cleaning solution inlet end cover and one end of each membrane assembly are fixed on a double-chain through clamps, and the other end of each membrane assembly is fixed on the other side of the double-chain, so that the assemblies can be conveniently mounted, the complex assembly disassembly process is avoided, and labor conservation is achieved; an identical number of the membrane assemblies are mounted in each cleaning solution tank, the equipment automation level is improved through the chain transmission method, and the membrane assemblies in the different cleaning solution tanks are operated at the same time, so that the whole assembly line is continuous, the cleaning time is reduced, and the cleaning efficiency is improved.

The application discloses a scale inhibitor and descaling agent and a preparation method thereof, belonging to the field of oilfield exploitation. The scale inhibition and descaling comprises the following components in parts by weight: 0.2-0.6 part of anti-swelling agent, 0.013-0.021 part of anti-scaling agent, 0.004-0.005 part of methylated mono-macrocyclic polyamine, 0.01-0.02 part of descaling agent agent, 0.15-0.4 parts of dispersant, and the balance of water. In this application, the cations generated by the dissociation of the anti-swelling agent are neutralized with the negative charge on the surface of the clay, reducing the electrostatic repulsion of the clay and inhibiting the expansion of the clay; the anti-swelling agent can directly convert calcium sulfate or calcium carbonate into water-soluble substances, avoiding the combination of scale-forming ions; dissolving calcium carbonate scale or calcium sulfate scale by methylated mono-macrocyclic polyamine; dispersing the above components uniformly by dispersing agent. The scale inhibitor and descaling agent provided by the application has good descaling effect, high descaling rate, short descaling time and low corrosion rate to equipment.