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Pretreat MVC system
We are.. the mfg is proposing putting in acid cleaning of the heat exchangers to keep scaling down, but I am afraid that with the levels of iron we are seeing (7 ppm) we will have an usual high chemical costs, and we will still require allot of off-line cleaning and gasket replacement costs...- scoho83
- Post #6
- Forum: Water treatment and distribution
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Spec Breaks
You use a different pipe spec for relief analysis, safety systems and hydrotesting issues. It may in the end be the same pipe (materially and wall thickness wise) its more of a rating issue and what kind of safety systems you need around it.- scoho83
- Post #9
- Forum: Chemical engineering other topics
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Compressor Controls
ISd this nothing more than the suction recycle line? This is a common method to ernsure suction pressure is maintained to the recipocating compressor (i.e. that it has enough volume for the compressor to be filled (you don;t starve the suction). It is quite a common method of controlling the...- scoho83
- Post #6
- Forum: Petroleum production engineering
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Water treatment
He was asking about dissolved solids, which as pointed out earlier, centrifuges will have no impact. He is adding air to the system, which is oxidizing the TSS to form percipitates. I think he is wondering about about the contactor design. The packing issues suggestions are great, but I think...- scoho83
- Post #14
- Forum: Petroleum engineering general discussion
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Designing a Water / Wastewater Treatment Plant to ASME B31.3
What I am confused about is the "need" to do stress analysis on a pipe he said will not see any thermal fluctuations. As an owner, (or a design firm making recommendations to owners) you can set-up "practices" in your specs as to when stress analysis is required. If you know you have no "real"...- scoho83
- Post #9
- Forum: Water treatment and distribution
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Pretreat MVC system
bimr, THANKS! Our problem isn't with the distillate quality, but more with fouling caused by Fe+ contamination. It is generatibg a FeO scale and fouling of the pre-heating and system (and we are concerned about the vertical tubes too, but haven't taken it down to inspect yet). The Fe+...- scoho83
- Post #4
- Forum: Water treatment and distribution
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Pretreat MVC system
We have a MVC for producing Boiler Feed Water. It was designed for use with produced water from oil production. However, we use local brine for a make-up system, and current produced water production is not up to quality. This is causing some issues in that the brine has Ferrous contamination...- scoho83
- Thread
- Replies: 6
- Forum: Water treatment and distribution
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Spec Breaks
I am not sure what Europipe is saying. It would appear that you would have to do allot more than just "change the pipe" if you tried to put a 300# system there instead. One thing you should do is to do some simple blow-down calcs to make sure that at choked flow through the block valves and...- scoho83
- Post #7
- Forum: Chemical engineering other topics
