Method for synthesizing nickel tetracarbonyl

Abstract

The invention relates to a compound method for nickel carbonoxide. It sets thermalloy or ambrose first alloy onto fixed bed reactor and is continuously pumped into carbon monoxide with catalyst. The reaction pressure is controlled from 5.0Mpa to 15.0Mpa, and temperature is controlled from 150 degree centigrade to 250 degree centigrade. Thus, the carbonylation ratio of nickel in raw material is very high. And experiment safety factor is sharply increased.

Description

technical field [0001] The invention relates to a synthesis method of nickel carbonyl. Background technique [0002] The carbonylation nickel extraction process is a metallurgical technology developed in modern times. The process is to react pure nickel, copper-nickel alloy or nickel oxide and other nickel-containing raw materials with carbon monoxide to obtain nickel carbonyl Ni(CO) 4 . Since the establishment of the Clydage Refinery of the Mond Nickel Company in the UK in 1902, the carbonyl process has been developed for nearly a hundred years and has now formed an atmospheric, international The medium pressure represented by the copper cliff nickel refinery of the Nickel Company (INCO), and the high pressure carbonylation represented by the Manchegorsk plant of the Russian North Nickel Company. The atmospheric synthesis operation of the International Nickel Corporation (INCO) Clydage Nickel Refinery in the UK is continuous. The atmospheric carbonylation equipment and pr...

AI Technical Summary

Problems solved by technology

The atmospheric synthesis operation of the International Nickel Corporation (INCO) Clydage Nickel Refinery in the UK is continuous. The atmospheric carbonylation equipment and process are simple, but the efficiency is low. Feeding, discharging, synthesis and CO circulation and replenishment When the operation of the whole system is carried out continuously, if a certain link is blocked, it will affect the progress of the whole process. Therefore, the requirements for production control management, system heat balance and CO balance are extremely strict and difficult to grasp.

And because there is no rectification process, the adaptability to raw materials is poor

The high-pressure carbonylation method adopted by Russian North Nickel Company has the advantages of simple operation, easy equipment disposal, and low project cost. However, due to the high pressure and temperature, the synthesis equipment has thick walls, and it is difficult to dissipate heat and discharge materials. The selectivity of containing a variety of metal elements is poor, and it is required that the iron content of the raw material should not be too high

Moreover, it will cause the loss of precious metals, making it difficult to take advantage of the high-pressure reaction speed

[0003] The medium-pressure carbonylation method used by the International Nickel Corporation (INCO) in Canada’s Copper Cliff Nickel Refinery and in New Caledonia’s Boise Plant has the advantages of moderate pressure, high efficiency of synthesis equipment, and strong adaptability to raw materials. The structure of the equipment is complicated, and the synthesis kettle needs to implement dynamic rotary sealing under medium pressure conditions, which is difficult in technical requirements and expensive in cost