hollerg
Chemical
- Mar 22, 1999
- 97
I need to change how five vessels are air-freed*. The current procedure drops the non-condensable concentration to at least 10% and perhaps, < 1%. Once cleared of non-condensables, this aqueous process operates at 200 F continuously without venting. The reactor has a partial jacket (~ 1/3" of the side) which could have low pressure, atmospheric steam applied. I plan to steam out the vessel but I doubt the visual appearance of the steam will be reliable indication of the gas concentration in the plumb.
I would appreciate suggestions on who to contact for a portable instrument/device to test the steam plumb. Even better if it is suitable for an electrically classified area. (O2 meter?, absolute humidity measurement?, ??)
Since I do not have an intermediate nozzle, am I better connecting the steam to the top of the vessel and down-flow, or configuring the bottom outlet to ingress steam and egress steam and condensate?
* Currently we fill to the top tangent line,(16,000 gal, w/ 1.5:1 H/D ratio) and sweeping the residual head-space with a much heavier halogenated gas.
I would appreciate suggestions on who to contact for a portable instrument/device to test the steam plumb. Even better if it is suitable for an electrically classified area. (O2 meter?, absolute humidity measurement?, ??)
Since I do not have an intermediate nozzle, am I better connecting the steam to the top of the vessel and down-flow, or configuring the bottom outlet to ingress steam and egress steam and condensate?
* Currently we fill to the top tangent line,(16,000 gal, w/ 1.5:1 H/D ratio) and sweeping the residual head-space with a much heavier halogenated gas.