Methanol Purification Version – One Question per Day 20200324
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State the basic procedures for using Cat: Answer: (1) Purge and clean the synthesis circuit； (2) Cat loading ； (3) Ca heating reduction ； (4) In the initial stage of Cat operation, the temperature is 220°C; in the intermediate stage it is 240°C; and in the final stage it is 260°C, with the circulation volume gradually increasing ； (5) Cooling passivation ； (6) Unload and replace.
(1) Purging and cleaning of the synthesis loop； (2) Cat loading ； (3) Ca heating reduction ； (4) In the initial stage of Cat operation, the temperature is 220°C; in the intermediate stage it is 240°C; and in the final stage it is 260°C, with the circulation volume gradually increasing ； (5) Cooling passivation ； (6) Unload and replace.
(1) Purging and cleaning of the synthesis loop； (2) Cat loading ； (3) Ca heating reduction ； (4) In the initial stage of Cat operation, the temperature is 220°C; in the intermediate stage it is 240°C; and in the final stage it is 260°C, with the circulation volume gradually increasing ； (5) Cooling passivation ； (6) Unload and replace.
(1) Purging and cleaning of the synthesis loop； (2) Cat loading ； (3) Ca heating reduction ； ??(4) In the initial stage of Cat operation, the temperature is 220°C; in the intermediate stage it is 240°C, and in the final stage it is 260°C, with the circulation volume increasing gradually ； ??(5) Cooling passivation ； ??(6) Unload and replace.
(1) Purging and cleaning of the synthesis loop； (2) Cat loading ； (3) Ca heating reduction ； (4) In the initial stage of Cat operation, the temperature is 220°C; in the intermediate stage it is 240°C; and in the final stage it is 260°C, with the circulation volume gradually increasing ； (5) Cooling passivation ； (6) Unload and replace.
(1) Purging and cleaning of the synthesis loop； (2) Cat loading ； (3) Ca heating reduction ； (4) In the initial stage of Cat operation, the temperature is 220°C; in the intermediate stage it is 240°C; and in the final stage it is 260°C, with the circulation volume gradually increasing ； (5) Cooling passivation ； (6) Unload and replace.
(1) Purging and cleaning of the synthesis loop； (2) Cat loading ； (3) Ca heating reduction ； (4) In the initial stage of Cat operation, the temperature is 240°C; in the intermediate stage it is 250°C; and in the final stage it is 260°C, with the circulation volume gradually increasing ； (5) Cooling passivation ； (6) Unload and replace.
(1) Purging and cleaning of the synthesis loop； (2) Cat loading ； (3) Ca heating reduction ； (4) In the initial stage of Cat operation, the temperature is 220°C; in the intermediate stage it is 240°C; and in the final stage it is 260°C, with the circulation volume gradually increasing ； (5) Cooling passivation ； (6) Unload and replace.
(1) Purging and cleaning of the synthesis loop； ?（2）Cat loading ； ?（3）Ca heating reduction ； ? (4) In the initial stage of Cat operation, the temperature is 240°C; in the intermediate stage it is 250°C, and in the final stage it is 260°C, with the circulation rate increasing gradually ； ?（5）Cooling passivation ； ?（6）Unload and replace.
(1) Purging and cleaning of the synthesis loop； (2) Cat loading ； (3) Ca heating reduction ； ??(4) In the initial stage of Cat operation, the temperature is 220°C; in the intermediate stage it is 240°C, and in the final stage it is 260°C, with the circulation volume increasing gradually ； ??(5) Cooling passivation ； ??(6) Unload and replace.
(1) Purging and cleaning of the synthesis loop； (2) Cat loading ； (3) Ca heating reduction ； ??(4) In the initial stage of Cat operation, the temperature is 220°C; in the intermediate stage it is 240°C, and in the final stage it is 260°C, with the circulation volume increasing gradually ； ??(5) Cooling passivation ； ??(6) Unload and replace.