JANUARY 2020
USING MAGNETIC LEVEL GAUGES IN SLUG CATCHER APPLICATIONS
The biggest problem for slug catcher applications is solids accumulation. The build-up occurs naturally during normal operations. Solids will continue to accumulate until they are physically removed. Solids accumulate in the piping around the vessel/drum. This can cause operational failure as the piping can get congested. Solids build-up on sight glasses is very dangerous because the sight glass is a critical component to the operation of a slug catcher.
Measuring Black Liquor Waste Liquid in a Paper Mill
Black liquor is a waste product found in paper mills from the processes used to break pulp wood down into usable fibers. Many different methods are used to wash black liquor from the fibers before they are sent to the paper / cardboard making sections of the mill, one of which is a black liquor Chemi-Washer.Guided Wave Radar was rejected as a measurement tool in the chemi-washer due to false readings caused by solids buildup on the probe. Specially-designed Jogler MLGs, however, are able to operate for longer periods of time with no disruption of measurement.
MLG Component Improvements: Chambers
Jogler designs every chamber to ANSI B31.1 and B31.3 specifications. Jogler uses extruded outlets to weld branch connections on its chambers to ensure a smooth, reliable float travel. Extruded outlets also allow for full-bore, size-on-size connections with a full penetration, radiographable weld. This eliminates chamber distortion and ID protrusions.
MLG Component Improvements: Tube Sealing
Some competitors use traditional glass blowing techniques to close their tube and achieve a hermetic seal. Jogler standard indicators utilize our (previously patented) SuperSeal technology to seal bargraph indicator tubes, providing a guaranteed hermetic seal with at least 3 layers of redundancy.
MLG Component Improvements: Bar Graph Assembly
Jogler re-engineered the level gauge indicator using a unique two-piece male/female open slot flag rail design to prevent temperature related distortion and flag breakage. Learn what else makes our bar graph assembly different.
MLG Component Improvements: Floats
Jogler magnetic level gauges are designed and engineered to overcome typical problems common with traditional MLGs. Learn how our float design reduces the likelihood of stress cracking / float failure, and how it prevents “hanging up” or sticking in chambers with slight obstructions or heavy fouling.
MAGNETIC LEVEL GAUGES ON BOILER DRUMS
The 2015 edition of ASME Section I Rules for Construction of Power Boilers has placed new restrictions on the use of Magnetic Level Gauges (MLG’s) on boiler drums. The ASME codes are not always completely clear and can be interpreted in different ways. Following is our interpretation of how these restrictions apply.
Custom Float Design for Tight Interface and Dirty Surface
A customer had a process requiring liquid level measurement of a very tight interface of fluids with heavy buildup. Other manufacturers were not able to successfully help the customer with this problem, so Jogler engineers jumped at the opportunity.