Preparation method of lithium type low-silicon molecular sieve loading filler

Abstract

The invention requires protecting a preparation method of lithium type low-silicon molecular sieve loading filler. The preparation method comprises the following steps: a surface treatment step of a lithium type low-silicon molecular sieve, a slurry preparation step and a loading filler molding step. A design thought of a novel loading filler structure is mainly aiming at improving space occupation and reduces energy consumption of a pressure swing adsorption oxygen preparation technology; the novel loading filler ensures that the air treatment amount of each kilogram of the molecular sieve isnot lower than 100L / min, the oxygen output amount of each kilogram of the molecular sieve is not lower than 10L / min and the power consumption amount per unit is not higher than 0.5Kwh / Nm<3>.

Description

technical field [0001] The invention belongs to the field of chemical technology, and in particular relates to the preparation technology of lithium-type low-silicon molecular sieve loaded filler, especially the molecular sieve coating technology and processing molding technology. Background technique [0002] Pressure swing adsorption separation technology (PSA) is a new gas separation technology that has emerged in the separation industry in recent years. The pressure conversion process realizes the separation or purification of gas. Adsorbent is the basis of pressure swing adsorption separation technology (PSA), and the performance of the adsorbent directly affects the final separation effect, and even affects the complexity of the process steps and the service life of the adsorption operation unit. With the popularization of the application of PSA technology, the demand for excellent molecular sieve adsorbents with high nitrogen adsorption capacity and large nitrogen-ox...

AI Technical Summary

Problems solved by technology

The existing packing structure design technology mainly follows the idea of ​​spherical adsorbent molecular sieves, mainly by making lithium-type low-silicon molecular sieves into spherical packings. The reduction in the diameter of spherical packings will help increase the specific surface area and bulk density. Type low-silicon molecular sieve spherical packing with a diameter of 1-2mm. However, the structural design method to reduce the diameter of the spherical packing is close to the limit. If the diameter of the spherical packing is too small, it will not only make it difficult to process and form, but the dense packing caused by the small particle size of the packing will also cause air pressure. The drop is too large, resulting in high energy consumption