34 results about "Corrosion engineering" patented technology

The invention provides a high-temperature-resistant and anti-corrosion cyclone-shear type gas-liquid separator, which includes a first or second cyclone-shear type separation standard module assembly, which respectively consists of a first disc body, a second disc body and a second disc body. Composed of three discs, or composed of the first disc, the second disc, the third disc, the fourth disc and the fifth disc, the first or second cyclone shear separation standard module components are all along the main axis The axial interval is connected to the main shaft. When the rotary separator is rotating at high speed, the liquid is continuously circulated and impacted by the centrifugal force of the rotary separator and the counterflow of the gas, so that the solute and solvent are separated effectively and efficiently. The gas-liquid separator disc and main body Both the main shaft and the main shaft are made of corresponding anti-corrosion engineering materials. This device has the advantages of good anti-corrosion performance, simple operation, and low energy consumption. device.

The invention provides an application of a resin ceramic material in anti-corrosion engineering of a wet desulfurizing absorption tower and aims at solving the problem that glass flake resin adopted by the anti-corrosion engineering of an existing wet desulfurizing absorption tower is poor in effect and has a potential safety hazard. The resin ceramic material is adopted by the application; and the resin ceramic material has the advantages of being easy to mold, free of water and zero in shrinkage after being solidified. The resin ceramic material is compact in surface and high in bonding strength with carbon steel after being molded, and has the advantages of high wear resistance, decay resistance and relatively good erosion resistance. Furthermore, the resin ceramic material is free of an organic solvent, and is safe and environmentally friendly. In addition, the construction method of the material is convenient, simple and easy to construct, and is suitable for actual production and application.

The invention relates to a polyurea external anti-corrosion coating for pipelines and a manufacturing method thereof, which is prepared by heating and prepolymerizing diphenylmethane diisocyanate, carbodiimidized diisocyanate, polyether diol and polyether triol. Polymer liquid A, composed of amino-terminated polyoxyethylene ether, dimethylthiotoluenediamine, diethyltoluenediamine, isopropyl titanate solution, polyacrylate solution, carbon black, titanium dioxide and light carbonic acid Calcium-based Liquid B is composed of Liquid A and Liquid B, which are heated to 65°C and mixed, and then quickly sprayed and solidified to form a coating. The coating has excellent construction performance and fast curing speed, and the coating has excellent shear performance, cathodic stripping resistance, abrasion resistance, impact resistance and corrosion resistance. It can be used in the external anti-corrosion project of the pipeline, which can resist the corrosion of the pipeline by the corrosive medium and improve the service life of the pipeline.

The invention provides double-component anti-corrosive decorative finishing coat for engineering machinery. The finishing coat is formed by mixing 72-75 parts of BC (Folic Acid)-1 resin, 0.3-0.5 part of a wetting dispersant, 0.2-0.4 part of organic bentonite, 18-20 parts of pigments, 0.2-0.9 part of an assistant, 1-2 parts of a metal drying agent, 9-11 parts of a modifying filler, 1-3 parts of a DBE (Dibasic Ester) solvent and 2-3 parts of butyl acetate. Compared with the conventional acrylic polyurethane coating, the finishing coat disclosed by the invention has high coating fullness, good fresh imaging performance, low toxicity and low price, satisfies or exceeds technical requirements of HG / T4339-2012 (other finishing coat), and is functional double-component coating.

The invention discloses a preparation method of a rosin-based thermally polymerized anticorrosion film doped with cobaltous oxide nanoparticles with high pitting potential. Acrylamide is used as a monomer, azobisisobutyronitrile is used as an initiator, and cobaltous oxide nanoparticle The particles are used as dopants, and propylene pimaric acid (ethylenediamine) amide is used as crosslinking agent. A rosin-based thermally polymerized anticorrosion film doped with cobaltous oxide nanoparticles with high pitting corrosion potential is prepared by thermal polymerization. The film The layer has high pitting potential, good pitting corrosion resistance, simple and practical, and overcomes the shortcomings of low corrosion potential of the previous anti-corrosion film layer. The film layer can be applied to the anti-corrosion engineering of metal parts of electrical equipment such as air conditioners, electric water heaters, air conditioners, and refrigerators, and mechanical equipment such as tractors and cranes.

The invention discloses a long-acting metal anti-corrosion coating for metal structural parts and metal equipment anti-corrosion and its manufacturing process, which consists of modified polymer organic compound coal tar pitch, organic polymer modified resin, active anti-rust Blending agent 3 or 4 or 5 and additives, after stirring, grinding and adjusting viscosity, adding curing agent. This kind of metal anti-corrosion coating uses the electrochemical mechanism of metal corrosion and adopts a new preparation process. It has extremely excellent super weather resistance and corrosion resistance. It can work under the conditions of rust, water and oil, and can be widely used. Anti-corrosion engineering such as metal structural parts, equipment, buildings (structures), underground engineering and ships in various environments.

The invention discloses a 2+ Responsive metal-organic framework corrosion inhibitor-hydrogel composite and its preparation method and application, the composite is composed of polyvinyl alcohol hydrogel and thiourea corrosion inhibitor encapsulated in the hydrogel Copper-based carboxylate metal-organic framework. First, the in situ encapsulation of the corrosion inhibitor guest in the metal-organic framework assembly solution was realized by a one-pot synthesis method, and then the encapsulation precursor was doped into the polyvinyl alcohol hydrogel, and the hydrogel monomer and the metal-organic framework The coordination effect of the metal center in the nanoshell can delay the growth rate of the nanoshell, thereby improving the integrity of the framework structure, and finally realizing the high-capacity encapsulation of the corrosion inhibitor, forming a water solution with a high loading of the metal-organic framework encapsulating the corrosion inhibitor. Gel complex. The corrosion inhibition compound can be applied to seawater corrosion engineering structures, because the main characteristic product of carbon steel corrosion in seawater environment is free ferrous ions, which pass through the hexadecyltrimethylammonium cation center of the metal organic framework The replacement can expand the outer aperture of the frame to release the corrosion inhibitor encapsulated inside, and realize the targeted protection of the corrosion area. Adopting the corrosion inhibition system of the present invention has strong targeting, high efficiency and durability, high cost performance, and has remarkable application value and broad market prospect.

The invention discloses a reclamation unit capable of adjusting internal water pressure, which belongs to the technical field of land reclamation. At present, land reclamation projects are mainly faced with the shortage of filling materials, small material mass-to-weight ratio, difficult material transportation, many metal reclamation structures are prone to corrosion, difficult engineering construction, and costly and expensive. The present invention comprises an outer shell and an inner tank by constructing a hollow inner cavity inside the inner tank, the hollow inner cavity is used to accommodate a pressurized medium, the inner tank includes an elastic support outer layer and an elastic waterproof inner layer; the outer shell It includes a reinforced concrete layer, and the outer shell covers the inner tank; the outer shell is provided with a number of pipelines for filling the pressurized medium that can communicate with the hollow inner cavity of the inner tank and the outside world; the pipelines are provided with valves, and the valves can The pipeline is selectively opened and closed. The use of cheap manufacturing materials aims to provide a reclamation building material with a large body-to-weight ratio, a simple structure, saving material resources by using hydraulic pressure, easy handling, less difficulty in construction, and less corrosion.