A method to improve the reaction rate of nickel carbonyl synthesis

Abstract

This invention provides a method for improving the reaction rate of nickel carbonyl synthesis, belonging to the field of carbonyl metallurgical technology. It solves the problems of low gas-solid reaction efficiency and dust blockage in existing nickel carbonyl synthesis reactions. This invention purifies CO, controlling the N2 content in the CO gas participating in the nickel carbonyl synthesis reaction to below 0.3%. The CO not participating in the carbonyl synthesis reaction and the CO obtained from the decomposition reaction of nickel carbonyl are pressurized and enter an adsorption tower for adsorption, pressure equalization, displacement, reverse release, and evacuation. Then, a vacuum pump extracts the adsorbed CO from the copper-loaded adsorbent to a CO gas holder for storage. A gas switching device is installed at the CO inlet of the synthesis reactor, ensuring that CO gas always enters from the bottom of the reactor and slowly passes through the material layer from bottom to top. This invention improves the reaction rate of nickel carbonyl synthesis by controlling the N2 content in the CO gas during the nickel carbonyl synthesis reaction and optimizing the solution to the problems of low gas-solid reaction efficiency and dust blockage.