Issues regarding the valve opening degree of the crude argon column
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This post was last edited by hxm2087 on 2012-1-12 08:13. What are the effects of increasing the flow rate from the first crude argon tower to the second crude argon tower? What are the effects of raising or lowering the valve controlling the level of the argon cooling liquid in the second crude argon tower? Good answers will be rewarded with points. Haha
When the flow rate from Tower 1 to Tower 2 is increased, either the oxygen or nitrogen content in the argon will increase; this depends on the level of the argon fraction, as well as on the amount of air used to determine the concentration of argon. An excessive amount of extraction will reduce purity and yield; what is needed is material balance. Increasing or decreasing the liquid level control valve for argon cooling in the crude argon two-tower system directly affects the amount of crude argon flowing into the main tower, as well as the rise and fall of the main cooling liquid level. It also affects the amount of condensation in the condenser; excessive condensation indicates a high nitrogen content in argon, while low condensation suggests incomplete separation of oxygen from argon. What is needed is a heat balance. In short, whether to start operation or reduce the condenser valve opening depends on the potential of the main tower as well as the heat balance and material balance.
Increase the flow rate from Tower 1 to Tower 2; removing too much argon from the circulation system reduces its purity, as excessive removal leads to an increase in oxygen and nitrogen levels in the argon, resulting in nitrogen clogging. Adjusting the level control valves for the argon cooling in the two crude argon towers up or down directly affects the amount of crude argon flowing into the main tower; it also influences the amount of condensation that occurs in the condenser. Excessive condensation leads to a high nitrogen content in the argon, while insufficient condensation results in incomplete separation of oxygen from the argon.
The increased flow from Tower 1 to Tower 2 results in more argon fraction being drawn from the main tower; in other words, it relates to the amount of circulation； If the control of your argon fraction is high, then there will be more nitrogen in the argon. If the extraction volume from the pure argon column is low, then nitrogen blockage is possible ； If the argon fraction is controlled at a low level, then you will increase the oxygen washing load on towers 1 and 2