3results about How to "High airspeed" patented technology

The present invention discloses a process and a preparation system for preparing a carbon dioxide absorption catalyst using fly ash, comprising: S1, transporting fly ash particles to a reactor; S2, transporting an ethanol solution of fluorosilicic acid or hydrofluoric acid and n-hexane to a reactor; S3, removing impurities from a catalyst substrate in the reactor; S4, transporting a lithium hydroxide solution to the reactor, and blowing away the fly ash particles in the reactor; S5, after transporting diesel to the reactor, blowing away the fly ash particles in the reactor, so that the diesel is quickly carbonized and loaded on the surface of the fly ash particles; S6, mixing an n-hexane solution of amine with fly ash particles, and blowing away until the n-hexane is discharged. The present invention improves the degree of attachment of active materials and increases the space velocity of the catalyst; avoids the active materials blocking the gaps in the catalyst substrate or uneven attachment during the preparation process, thereby reducing the catalyst's adsorption capacity for carbon dioxide; and the system can achieve continuous operation and industrial mass production.

The invention discloses a copper-based deep desulfurizer which is prepared by the following steps: dissolving soluble copper salt in water to obtain a solution A, dissolving an alkaline precipitator in water to obtain a precipitator solution B, mixing the solution A and the precipitator solution B according to a certain proportion in a stirring kettle, and uniformly stirring to obtain the copper-based deep desulfurizer. Adding a certain amount of a solution B prepared by the same method to adjust the pH value of the solution to be alkaline, heating the solution to 55-70 DEG C, continuously reacting for a period of time, and filtering, washing and drying to obtain a solid C; roasting the solid C to obtain a solid D; and taking a certain amount of the solid D, ammonium molybdate, zinc oxide powder and a binder, mixing, adding water, extruding into strips, curing by using 120 DEG C water vapor generated by adding hot water in a closed reaction kettle, and drying after curing to obtain the copper-based deep desulfurizing agent. The desulfurizer has an ultra-high-precision removal effect on sulfides, and the desulfurization precision of the existing zinc oxide desulfurizer is improved from less than or equal to 0.03 ppm of total sulfur to less than or equal to 0.005 ppm of total sulfur.

This invention discloses a honeycomb hydrolysis catalyst suitable for coal gas desulfurization and its preparation method, belonging to the field of catalyst technology. The preparation method includes the following steps: (a) using TiO2, SiO2, silica-alumina molecular sieve, titanium-silicon molecular sieve (types 0-4) and Al2O3 as carriers, adding organic binders, molding aids, and water to mix together to obtain a slurry; (b) after aging and filtration, the mixed slurry is extruded into shape through a mold, then dried and calcined to prepare honeycomb catalysts with different pore numbers, wall thicknesses, and external dimensions. This honeycomb catalyst is used as the finished catalyst, or the honeycomb catalyst is further loaded with alkali metals, aged, dried, and calcined a second time to obtain the final catalyst, which is used as the finished catalyst. The catalyst of this invention has the characteristics of high porosity, low bed pressure drop, allowing operation at high space velocities, large single-tower coal gas processing capacity, long service life, and convenient loading.