duriarte
Chemical
- Nov 23, 2014
- 1
Dear friends,
I'm wondering if any of you have experience retrofitting an existing fresh caustic tank (3% weight) to spent caustic tank. Currently, we send our spent caustic from gasoline Merox to a treatment unit. This spent caustic could be used downstream of the desalter. It would reuse the amount of caustic to be treated (and it would also save some fresh caustic). Our first idea was to use the existing tank. Since the spent caustic has surely dragged some HC, those may evaporate in the tank and be vented , and we don't want that. Connecting the tank to the flare is not an option, in my opinion (tank is an atmospheric one, and KO Drum is at 0.15 kg/cm2 g). Another option would be to use N2 blanketing in the tank. Does anybody has done this in the past? I would love some feedback. Thanks
I'm wondering if any of you have experience retrofitting an existing fresh caustic tank (3% weight) to spent caustic tank. Currently, we send our spent caustic from gasoline Merox to a treatment unit. This spent caustic could be used downstream of the desalter. It would reuse the amount of caustic to be treated (and it would also save some fresh caustic). Our first idea was to use the existing tank. Since the spent caustic has surely dragged some HC, those may evaporate in the tank and be vented , and we don't want that. Connecting the tank to the flare is not an option, in my opinion (tank is an atmospheric one, and KO Drum is at 0.15 kg/cm2 g). Another option would be to use N2 blanketing in the tank. Does anybody has done this in the past? I would love some feedback. Thanks
