Foamed honeycomb zeolite and preparation method thereof

Abstract

The embodiment of the invention provides foamed honeycomb zeolite and a preparation method thereof. The preparation method comprises the following steps: quantitative weighing: weighing all raw materials according to a design proportion; main material mixing: adding the weighed main materials into a double-helix mixer, and conducting mixing for 2-3 hours; auxiliary solution preparation: uniformly mixing a binder, an air entraining agent and a coagulation accelerator; mixing of main and auxiliary materials: mixing the mixed dry powder main material with the auxiliary material, and conducting stirring for 2 hours; slurry stirring: uniformly mixing the mixed slurry by using a stirrer; slip casting: injecting the mixed slurry into a mold, and taking out a shaped material after shaping; and drying, stoving and sintering: placing a sample for 4-5 days under a closed windless condition, drying the sample in a microwave oven, controlling the moisture to be 3% or less, and sintering the sample in a furnace. According to the invention, the honeycomb zeolite can be made into a bubble-shaped structure in the forming process, the volume density of the honeycomb zeolite is reduced, the production cost is reduced, and the adsorption efficiency of the honeycomb zeolite is improved.

Description

technical field [0001] The invention belongs to the technical field of honeycomb zeolite, and in particular relates to a foamed honeycomb zeolite and a preparation method thereof. Background technique [0002] With the rapid development of my country's industrialization and urbanization and the continuous growth of energy consumption, PM2.5 and O 3 The characteristic regional compound air pollution is becoming more and more prominent, and the frequency of heavy air pollution in the region is increasing at the same time, which seriously restricts the sustainable development of social economy and threatens the health of the people. In order to fundamentally solve PM2.5, O 3 To effectively improve the quality of the air environment, the country should actively promote the pollution prevention and control of its key precursors, VOCs. However, at present, the foundation of VOCs pollution prevention and control in my country is relatively weak, and there are many problems such a...

AI Technical Summary

Problems solved by technology

However, when the honeycomb zeolite is formed, in order to maintain a high mechanical strength, the inner wall is usually thicker, which makes the zeolite molecular sieve body density too high, and if the wall thickness is simply reduced, the strength will decrease, and the production cost is high and the adsorption efficiency is low.