Pre-heated dry gas
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What are the impacts of increasing the pre-lift dry gas volume?
As the oil-to-agent ratio increases, the linear speed increases, and the pressure drop across the spool decreases
The factor with the greatest impact is probably the load on the compressor! Due to the low molecular weight of dry gas, which makes it difficult to compress, special attention must be paid to the operation of the compressor during the pre-lifting of dry gas in order to increase the flow rate.
Pre-lifting dry gas is intended to control the density in the pre-lifting section, rather than lifting it to whatever level is desired.
An increase in the pre-heated dry gas level 1 will lead to an increase in the compressor load, so it is necessary to pay attention to controlling the compressor load. 2 causes the reaction linear velocity to increase, while also improving the lifting effect. 3. Increasing the pre-lift dry gas generally leads to a corresponding reduction in the amount of lift steam, which helps to minimize the impact of steam on the catalyst and thereby enhances its activity.