How to load methanol synthesis catalyst

Methanol Synthesis Catalyst loading：

The catalyst loading method will vary depending on the reactor form and internal structure, but all can be loaded by spreading method. For tubular reactors, tube by tube loading can also be used. The spreading method is relatively fast, while the tube by tube method takes longer to fill to ensure the quality of the loading and not to "bridge". The catalyst can be filled in the usual way, but the following points should be noted during the filling process:

-The strength of catalyst is poor, so avoid rolling and collision during transportation;

-The catalyst should be gently sieved to remove powder and debris before loading;

-Use spreading method to reduce the free fall height of catalyst as much as possible;

-Do not fill in rainy days to avoid the catalyst absorbing moisture and reducing the activity. The catalyst should be sealed on the cover immediately after filling for temperature reduction, otherwise the synthesis tower should be well closed to prevent moisture or other harmful contamination. Practice shows that catalyst activity decreases after being stored in air for a period of time due to adsorption of moisture and crystalline changes, etc.

-The operator must wear a dust mask when entering the synthesis tower for loading. It is strictly forbidden to step on the catalyst directly, but the catalyst can be laid on a wooden board and the operator can stand on the board to prevent the catalyst from being broken.

-Prevent catalyst particles from falling into the ring gap around the tower, thermometer casing and center tube, etc. when loading.

Methanol Synthesis Catalyst Activation：

Copper based catalysts are present in the form of oxides when they leave the factory and are active only after reduction. The catalyst reduction directly affects the catalyst performance and product quality.

The key to reduction is to control the reduction rate, which is related to the reduction temperature, hydrogen content, pressure and air speed. The reduction process requires a balanced temperature rise, uniform water discharge, and prevention of rapid temperature rise and water discharge, otherwise the catalyst activity, strength and life time will be affected, and in serious cases, the whole furnace catalyst will be burned. Different copper-based catalysts will have different reduction methods and temperature reduction procedures due to their composition, preparation process and use range, so a strict temperature reduction program must be developed for each new catalyst charge.