31results about How to "Suitable for industrial amplification applications" patented technology

The invention discloses a slice-shaped nanometer SAPO-34 molecular sieve with relatively low silicon content, a preparation method and an application thereof, and belongs to the technical field of molecular sieves. Tetraethylammonium hydroxide is used as a template, the slice-shaped nanometer SAPO-34 molecular sieve with relatively low silicon content is synthesized by using the traditional hydrothermal method or a solvothermal synthesis method. The synthesized nanometer SAPO-34 sample is a slice-shaped feature, of which the average crystal granularity size is 50-250nm and the thickness is 50-100nm. The synthetic method is simple and efficient; the solvent consumption is low; the yield of the synthesized nanometer SAPO-34 sample is extremely high and can be up to 85-90 percent; the synthesized nanometer SAPO-34 sample is high in low carbon olefin selectivity during reaction of methanol to olefin (MTO), particularly, the total yield of ethylene and propylene can be up to more than 83 percent, and the molecular sieve is very suitable for industrial amplification application.

The invention discloses a cobalt-based catalyst, its preparation method and its application in synthesizing 3-hydroxycarboxylate. The cobalt-based catalyst includes: nano-metal cobalt as the main active component, a porous material as a composite carrier, and a nitrogen-doped carbon material, wherein the nano-metal cobalt is uniformly loaded on the porous material, and the nitrogen-doped carbon The material is coated on the surface of nano metal cobalt. The preparation method includes: reacting the mixed reaction system containing cobalt source, carbon-nitrogen precursor and solvent at 25-80°C for 0.5-2h, adding porous material, and then calcining at 550-900°C in a protective atmosphere for 2 hours. ~3h, cobalt-based catalyst was obtained. The cobalt-based catalyst of the present invention has stable structure and properties, high reactivity and 3-hydroxycarboxylate selectivity; and has the advantages of simple preparation method, easy separation and recovery of the catalyst after the reaction, and repeated repetition without reducing its catalytic performance. Suitable for industrial amplification applications.

The invention discloses a method for enhancing the tear resistance performance of a polymer membrane material by using plane cocoons and a composite membrane material thereof. Place the cooked silkworm on a flat plate to spin silk to obtain a flat cocoon, and place the flat cocoon in the groove; then pour the polymer solution into the groove and completely immerse the flat cocoon, and then remove the air bubbles; finally, put the above mixed system at a certain temperature Under the curing, the fiber-reinforced composite membrane is finally obtained. The method of the invention is simple to operate, and the mechanical property of the polymer membrane material is significantly improved by using the cocoon fiber directly spun by the silkworm on the flat plate, and a high-performance fiber-reinforced composite membrane is obtained.

The invention relates to a high-temperature heat insulation fire-resistant fiber, a fabric, a preparation method and an application. The high-temperature heat insulation fire-resistant fiber is a polyimide porous fiber and has an axial orientation hole structure. The preparation method includes the steps: 1) performing solution spinning on polyamide acid saline gel, performing directional freezingduring spinning and collecting frozen fibers; 2) freeze-drying the frozen fibers and removing ice crystals to obtain the porous fiber with the orientation hole structure; 3) performing thermal amidation on the porous fiber to obtain the polyimide porous fiber. The preparation method is simple and suitable for industrial amplification application and can realize continuous large-scale preparation.

The invention relates to a preparation method of lamellar porous graphene oxide. The preparation method comprises the following steps: (1) dissolving graphene oxide and a binding agent into water to prepare a precursor solution; (2) putting the precursor solution into a container and carrying out a bidirectional freezing reaction to obtain an intermediate product, wherein a wedge-shaped device is arranged at the bottom of the container; (3) freezing and drying the intermediate product obtained by the step (2) to remove a solvent, so as to obtain the lamellar porous graphene oxide. The invention further relates to the lamellar porous graphene oxide. The method is simple to operate; the lamellar porous graphene oxide prepared by a bidirectional freezing method has a regular large-area and biaxial orientated lamellar porous structure.

The invention discloses a graphene thermal interface material production device and a preparation method thereof, which belong to the technical field of thermal interface material production. A graphene thermal interface material production device includes a fixed frame, and a transmission box is arranged at the upper end of the fixed frame , the inner wall of the transmission box is provided with a rotation fixing seat, and the rotation fixing seat is arranged in a plurality of circular arrays, the center of the transmission box is concentrically provided with a microneedle cutting seat, and the lower end of the fixing frame is provided with a driving mechanism, so The driving mechanism described above includes an indexing turntable and a synchronous deflection motor. The set indexing turntable drives the microneedle cutting seat to rotate periodically, and the microneedle cutting seat drives the microneedle assembly to carry out the two-dimensional nanosheet dispersion coated on the thermal interface substrate. Microneedle cutting prepares a thermal interface material with a high vertical orientation. The thermal interface material has a radial structure formed by microneedle cutting. This device is low in price and simple in process, suitable for large-scale continuous production and industrial scale-up applications.

The invention relates to a device system for treating desulfurization wastewater by using waste heat of flue gas from a power plant, which includes an inert particle drying chamber, an air supply device, a feeding device, and a gas-solid separation device; Distributed in a fluidized bed, spray coated on the surface of inert particles, and exchange heat and mass with the hot flue gas blown in from the bottom and side of the inert particle drying chamber to remove moisture. After the solid materials in the desulfurization wastewater collide and fall off, containing Part of the waste gas is discharged and reused by the power plant, and part of it is mixed with hot flue gas and circulated into the inert particle drying chamber. The invention solves the shortcomings of the traditional wastewater treatment device, such as large occupied area, complicated operation, low reliability, and low economical efficiency, rationally reutilizes the waste heat of the flue gas of the power plant, and improves the drying capacity and reliability of the fluidized bed.

The invention relates to a preparation method of porous resin fiber with an orientation hole structure, a product and an application. The preparation method comprises steps as follows: 1) to-be-polymerized emulsion is subjected to emulsion spinning, directional freezing is performed during spinning, and frozen fiber is collected, wherein the to-be-polymerized emulsion comprises a resin monomer, afree radical polymerization initiator, a reactive emulsifier and a thickening agent or comprises a prepolymer, the free radical polymerization initiator, the reactive emulsifier and the thickening agent or comprises a self-emulsified prepolymer, the free radical polymerization initiator and the thickening agent; 2) the frozen fiber is subjected to a polymerization reaction in a low-temperature environment; 3) the frozen fiber is unfrozen and dried, and the porous resin fiber with the orientation hole structure is obtained. Through combination of the directional freezing, emulsion spinning andfreezing polymerization, the pore structure of the obtained porous resin fiber has orientation, and vacuum freeze-drying can be avoided in the preparation process.

The invention relates to boron nitride / epoxy resin composite and a preparation method and application thereof. The preparation method includes: 1) dispersing boron nitride nanosheet and a binder in water to form a mixed solution; 2) subjecting the mixed solution to bidirectional freezing, and removing ice crystal by lyophilization to obtain boron nitride aerogel with lamellar oriented structure; 3) filling the lamellar oriented structure of the boron nitride aerogel with cured epoxy resin to obtain the boron nitride / epoxy resin composite. The preparation method is simple to perform, is available to large-scale preparation and is suitable for industrial scaled application.