6 results about "Corrosive chemical" patented technology

The application relates to a temperature-resistant and acid-resistant heat exchanger and a generating process, which comprises the following steps: a heat exchange pipe group is composed of a plurality of corrosion-resistant heat exchange pipes; the heat exchange pipes are immersed in corrosive chemical liquid and are used for circulating heat exchange of heat exchange medium; a support is used for supporting and fixing the heat exchange pipe group; a collecting component is used for collecting the pipe openings of the plurality of corrosion-resistant heat exchange pipes to form a multi-in and multi-out parallel circulating flow path; a cold water circulating inlet and a cold water circulating outlet are connected with the collecting component respectively and are used for connecting external cold water circulation. The application adopts the corrosion-resistant heat exchange pipes, and all joints are arranged outside the corrosive chemical liquid, so that the corrosion leakage risk is fundamentally eliminated, and long-term stable operation and maintenance-free use are realized.

The application discloses a chemical raw material conveying device with a flow monitoring function, which comprises a connecting pipe, a front pipe and a rear pipe, a mounting plate is fixedly connected to the middle part of the connecting pipe, a first rotating shaft is rotatably connected to the middle part of the mounting plate, a fan blade is fixedly connected to one end of the front pipe in the direction of the first rotating shaft, a first bevel gear is fixedly connected to the other end of the first rotating shaft, a second bevel gear is meshingly connected to the outer side of the upper part of the first bevel gear, a rotating speed measuring instrument is fixedly connected to the tail part of the second bevel gear and penetrates through the connecting pipe, and the rotating speed measuring instrument is fixedly connected to the outer side of the connecting pipe. Compared with a traditional external electronic sensor, the measuring error is reduced, the high-viscosity and corrosive chemical raw material is adapted, and the service life is long.

The application relates to a magnetic driving centrifugal pump structure resistant to strong corrosive chemical medium, which comprises a pump body and a working end, a filtering end for filtering the medium is arranged above a water inlet at the top of the working end, and a backwater end for fault tolerance of dry running is fixedly connected to the top of the working end; the application relates to the technical field of centrifugal pumps. The magnetic driving centrifugal pump structure resistant to strong corrosive chemical medium realizes online self-cleaning filtration based on fluid power: a rotatable filter cylinder is arranged in a pipeline, an impeller is installed at the top of the filter cylinder, and the impeller and the filter cylinder are driven to rotate by the impact force of the downward flow of the medium. The push plate on the surface of the filter cylinder continuously pushes the intercepted solid impurities to the edge of the output section during the rotation, the impurities are automatically gathered by centrifugal force and fluid scouring, and the defects that the traditional filter screen needs to be frequently stopped and cleaned due to blockage are avoided.

This invention belongs to the field of hydrophobic coating technology, specifically relating to a method for preparing a wear-resistant superhydrophobic coating with a sodium chloride-etched micro / nano structure. The method includes the following steps: pretreatment of the substrate, preparation of an organic carrier, preparation of inorganic coating slurry and sodium chloride slurry, screen printing and sintering of the inorganic coating, screen printing and sodium chloride etching, post-treatment to form a micro / nano structure, preparation of superhydrophobic capsules, immersion of the post-treated sample in a superhydrophobic emulsion, extraction, and drying. This invention uses sodium chloride melt etching instead of laser etching, eliminating the need for highly corrosive chemicals, making it environmentally friendly and cost-effective. It introduces a biomimetic honeycomb structure, ensuring pattern accuracy through slurry and process control. The resulting coating possesses both excellent superhydrophobic properties and wear resistance, achieving wear-resistant superhydrophobic functionality of an inorganic coating under simple conditions. It is suitable for baking equipment and other applications, meeting the requirements for easy surface cleaning and wear resistance.

This invention provides a current collector and its surface modification method and application. The surface modification method includes: sequentially subjecting an initial current collector to ultraviolet cleaning, plasma activation, plasma modification, and curing to obtain a surface-modified current collector; wherein the initial current collector includes aluminum foil; the discharge power of plasma modification is greater than the discharge power of plasma activation; the discharge power of plasma modification is 200~400W; and the time interval between plasma activation and ultraviolet cleaning is ≤10min. The surface modification method of this invention, through the synergistic effect of ultraviolet cleaning, plasma grading treatment, and curing, can effectively remove impurities such as oil stains from the surface of current collectors such as aluminum foil, and construct a rough hydrophilic interface, thereby achieving a simultaneous and significant improvement in the surface hydrophilicity and peel strength of current collectors used in sodium-ion batteries, without the need for the use of highly corrosive chemical reagents throughout the process.