3 replies to this topic

[Kranthi Kiran]

Does DP type LT's malfunction when foaming occurs in an amine absorber in gas sweetening unit..?

[Bobby Strain]

Not when properly installed.

 

Bobby

[breizh]

Hi ,

Definitely the foam is going to modify the density of the liquid thus the level .

 

Use the search engine in this forum , this subject is discussed .

 

Hope this helps.

 

Breizh

Edited by breizh, 30 November 2016 - 11:12 PM.

[sgkim]

Hi Kranthi, 

 

Does DP type LT's malfunction when foaming occurs in an amine absorber in gas sweetening unit..?

 

Compared with the various other types such as ultrasonic or capacitive, the differential pressure(DP) or float type sensors are less sensitive to foams.  When foaming occurs, the bottom level may usually drop not because of malfunction but because of column loading on each stage of the absorber.  The functionality of LT can be checked by local level gauges. 

 

sgkim

Edited by sgkim, 01 December 2016 - 02:54 AM.