Gas lift column shell side pipeline (carbon dioxide gas lift method)
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May I ask everyone: In the carbon dioxide stripping process flow, there is a pipeline on the shell side of the stripping tower that connects the liquid outlet from the high-pressure saturator to the pipeline behind the control valve for regulating the pressure to the intermediate saturation level. This pipeline is 1 inch in diameter, and it is equipped with a shut-off valve and a flow-limiting orifice plate. What is the purpose of this pipeline? Under what circumstances is it used? Should normal production be stopped?
This pipeline is an inert gas discharge pipeline, designed to vent the non-condensable gases on the shell side of 201C in order to maintain the heat exchange area of 201C
Ammonia gas towers are also available, but the gas is vented directly on-site. Normally open; its size is controlled by factors such as the amount of inert gas in the steam and the temperature of the stripping tower. This post was last edited by lxq700918 on 2009-4-19 11:09.]
Used for anti-freezing after parking; it’s easy to understand
Agreed, it’s often turned on during normal production.
This pipeline remains open during normal operation; it is an inert gas discharge pipeline used to vent the non-condensable gases from the shell side of the 201C stripping tower to the medium-pressure drum, thereby maintaining the heat exchange area of the 201C unit and ensuring efficient stripping
With the inert gas exhaust pipe valve in the open position, can steam be prevented from leaking?
Some are used for parking the nitrogen protection inlet pipelines, but they are rarely utilized.
Heat exchangers are generally equipped with exhaust pipes and drain pipes during design, but these are rarely used. To reduce the risk of leaks, workshops usually remove them and weld them in place.
Steam is discharged mixed with inert gas to prevent the accumulation of inert gas at the top of the vertical heat exchanger, which could affect the heat exchange efficiency. Drive it at a lower speed usually; it’s not a waste compared to ensuring the temperature of the stripping tower. When there is steam contamination, open multiple points; for example, hydrogen leaking from a synthetic heat exchanger enters the steam.