For starting up using a dry gas seal, it is necessary that a pressure difference exists between the main seal gas and the pre-buffer gas pressure

2019-07-27View Original

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For air-pressure units that use dry gas seal systems, the startup conditions require that the pressure difference between the main seal gas and the pre-buffer gas be ≥ ( ) MPa. A、0.1 B、0.2 C、0.3 D、0.4. Among the options below, which measure is effective in reducing coking during reactions? ( ) A. Slightly increase the reaction pressure B. Slightly increase the regeneration temperature C. Slightly increase the reaction temperature D. Slightly increase the preheating temperature of the raw materials. Is there an official answer?

Reply #22019-07-28

Appropriately increase the preheating temperature of the raw materials

Reply #32019-07-28

The answers given for the second question are B and D

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For starting up using a dry gas seal, it is necessary that a pressure difference exists between the main seal gas and the pre-buffer gas pressure

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