Search results
Results from the WOW.Com Content Network
Compared savings from dynamic degassing over reboiler degassing In the case of a traditional base load power plant, cycling is much less frequent—in some cases, only twice annually for maintenance. Compared with measuring only cation conductivity, the cost savings from an accelerated start-up using degas conductivity is potentially very large.
Degassing, also known as degasification, is the removal of dissolved gases from liquids, especially water or aqueous solutions. There are numerous methods for removing gases from liquids. There are numerous methods for removing gases from liquids.
[2] [3] For example, before casting aluminium alloys, argon bubbles are injected into liquid aluminium using a rotary degasser. The argon bubbles rise to the surface, bringing with them some of the dissolved hydrogen. The degassing step reduces the occurrence of hydrogen gas porosity. In the steel making process, this method is used very ...
Since its introduction in 1989, this gas recirculation method has been increasingly used by major aluminum producers. [3] An example of analyzer for direct hydrogen measurement in liquid aluminium is the Accurity. It works with a probe immersed in liquid aluminium and it uses the closed-loop recirculation method.
Since the Germans used the gauss as the unit of the strength of the magnetic field in their mines' triggers (not yet a standard measure), Goodeve referred to the various processes to counter the mines as degaussing. The term became a common word. The original method of degaussing was to install electromagnetic coils into the ships, known as ...
This method is an improvised version of ASTM D 3612A to do multiple extraction instead of single extraction and based on Toepler principle. In this apparatus a fixed volume of sample oil is directly drawn from a sample tube into a degassing vessel under vacuum, where the gases are released.
The method of liquid injection at the venturi throat can also cause problems. Spray nozzles are used for liquid distribution because they are more efficient (have a more effective spray pattern) for liquid injection than weirs. However, spray nozzles can easily plug when liquid is recirculated. Automatic or manual reamers can be used to correct ...
It has long been recognized that eruptions contribute much lower total SO 2 emissions than passive degassing does. [8] [9] Fischer et al (2019) estimated that, from 2005 to 2015, SO 2 emissions during eruptions were 2.6 teragrams (Tg or 10 12 g or 0.907 gigatons Gt) per year [10] and during non-eruptive periods of passive degassing were 23.2 ± ...