【Daily Question】 2016 2.2 What are the requirements for the sulfidation of hydrogenation catalysts? （ ）
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This post was last edited by zls1457 on 2016-2-2 07:49. [Daily Question] What are the requirements for the sulfidation of hydrogenation catalysts on 2016.2.2? {Multiple-choice question} A. The temperature is kept within the normal operating range. B. The controlled temperature is lower than the normal operating value. C. The sulfur content in the carrier does not exceed the specified limit. D. The space velocity is kept higher than the normal operating value. A, C (Please reply with both the serial numbers and the answers for easy scoring; thank you for your cooperation.) ）
2.2.2 The requirements for the sulfiding of hydrogenation catalysts are ( ACD ). A. The temperature is maintained within the normal operating range. B. The controlled temperature is lower than the normal operating parameters. C. The sulfur content in the carrier does not exceed the specified value. D. The controlled space velocity is higher than the normal operating parameters
2.2.2 The requirements for the sulfiding of hydrogenation catalysts are ( ). A. The temperature is maintained within the normal operating range. B. The controlled temperature is lower than the normal operating parameters. C. The sulfur content in the carrier does not exceed the specified value
A. Temperature is maintained within the normal operating range B. The controlled temperature is lower than the normal operating value D. The controlled space velocity is higher than the normal operating value
A. The temperature is maintained within the normal operating range. C. The sulfur content in the carrier does not exceed the specified value
B. The control temperature is lower than the normal operating parameters. (C. The sulfur content in the carrier does not exceed the specified value; does this carrier refer to the crude oil, or should it be the nitrogen content?) ）
C. It is certainly correct that the sulfur content in the carrier should not exceed the specified value; however, this is not necessarily true for the other three options, as each catalyst manufacturer uses a different sulfidation procedure. For example, in our plant, the maximum operating temperature for pentane hydrogenation is 240°C, but the maximum temperature for sulfidation is 280°C. For C9 hydrogenation, the maximum operating temperature is 350°C, yet the maximum temperature for sulfidation is 290°C. The requirements regarding space velocity are also not fixed, as the exothermic reaction during sulfidation is not significant; in both cases, the circulation rates used for sulfidating these hydrogenation catalysts fall within the normal range for space velocity.