Process for synthesizing methanol catalyst

Abstract

The invention discloses a process for synthesizing a methanol catalyst. The process comprises the steps: preparing an aqueous solution, of which the total concentration of copper nitrate, zinc nitrate and aluminum nitrate is 0.5-2.0mol/L, and an aqueous solution, of which the concentration of sodium carbonate/sodium bicarbonate is 0.5-3.0mol/L, controlling the pH value of precipitating mother liquor to 6.5 to 8.5 at the temperature of 50 DEG C to 80 DEG C while carrying out stirring, carrying out a reaction, carrying out aging for 0.5 to 4 hours at the temperature of 60 DEG C to 90 DEG C, then, washing precipitates with deionized water, preparing a suspension, of which the solid content is 5% to 30%, from the washed precipitates by using deionized water, and carrying out spray drying; and finally, roasting the dried precipitates for 1 to 5 hours in an air atmosphere at the temperature of 300 DEG C to 400 DEG C, thereby obtaining the catalyst. According to the process for synthesizing the methanol catalyst, the process is simple, the operating conditions are mild, and particularly, the particle size of the catalyst prepared by adopting spray drying reaches a micron scale; and proven by gas-liquid-solid three-phase slurry-bed reactor tests, the synthesized catalyst is high in activity and good in stability. The bottleneck that a process for synthesis of methanol by a gas-liquid-solid three-phase slurry bed, which has many advantages and very superior economical efficiency, cannot be industrially generalized extensively due to the fact that proper high-stability catalysts capable of being applied to the gas-liquid-solid three-phase slurry-bed methanol synthesis process are absent is thoroughly solved.

Description

technical field [0001] The invention belongs to the technical field of chemical synthesis, and in particular relates to a synthesis process of a methanol catalyst. Background technique [0002] The synthesis process of the methanol catalyst at least includes processes such as precipitation reaction, stirring, and roasting reaction. In the current methanol catalyst synthesis process method, the process flow is not easy to implement, the resulting methanol catalyst product has low purity, low single-pass conversion rate of reactants, complex production process, low production efficiency and high cost, and is not suitable for large-scale production. Contents of the invention [0003] In order to overcome the above-mentioned technical problems existing in the prior art field, the object of the present invention is to provide a synthesis process of methanol catalyst. The present invention not only has a simple production process and improves work efficiency, but also produc...

AI Technical Summary

Problems solved by technology

In the current methanol catalyst synthesis process method, the process flow is not easy to implement, the resulting methanol catalyst product has low purity, low single-pass conversion rate of reactants, complex production process, low production efficiency and high cost, and is not suitable for large-scale production.