Flow Measurement in Hydrofluoric Acid (HF) Alkylation Unit
Reliable flow measurement in HF alkylation units reduces leak points
Significantly improve safety and confidence of measurement point
The petroleum refining industry has an increased emphasis on the safety of the use of HF due to the highly hazardous and corrosive nature. If accidentally released, it can form a vapor cloud. The American Petroleum Institute (API) has established guidance for safe operations of HF alkylation units which includes minimizing leak points from threaded connections. The Rosemount Vortex Flow Meter seals in the process and the all-welded meter body enables online maintenance and sensor verification. This design fully eliminates the need for bypass lines and increases personnel safety by eliminating potential leak points and possible damage due to corrosion.
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Product Solutions
The Rosemount 8800 Reducer Vortex Flow Meter utilizes the trusted electronics, sensor, and meter body of the Rosemount 8800 Series while harnessing the benefits of integral reducers to accurately measure lower flow rates. This design eliminates field assembly and welding of separate reducers and piping, thereby greatly reducing installation costs and project risk. Additionally, the face-to-face dimensions of the Rosemount 8800 Reducer match that of the traditional Rosemount 8800 Series for ultimate versatility.
- Improve low flow rate measurement performance with a smart reducer design
- Simplify installation and decrease costs and project risk with built-in reducers that eliminate field assembly
- Size the meter without changes to piping with the same face-to-face dimensions as the traditional 8800 meters
Flow Meter Accuracy
± 0.70% of mass flow rate in water using 8800 MultiVariable (MTA/MCA option)
± 2% of mass flow in steam using 8800 MultiVariable (MTA/MCA option)
± 1.3% of rate at 30 psia through 2,000 psia in steam using 8800 MultiVariable (MPA option)
± 1.2% of rate at 150 psia in steam using 8800 MultiVariable (MCA option)
± 1.3% of rate at 300 psia in steam using 8800 MultiVariable (MCA option)
± 1.6% of rate at 800 psia in steam using 8800 MultiVariable (MCA option)
± 2.5% of rate at 2,000 psia in steam using 8800 MultiVariable (MCA option)
± 0.65% of volumetric rate for liquids (uncompensated)
± 1% of volumetric rate for gas and steam (uncompensated)
± 2% of mass flow in steam using 8800 MultiVariable (MTA/MCA option)
± 1.3% of rate at 30 psia through 2,000 psia in steam using 8800 MultiVariable (MPA option)
± 1.2% of rate at 150 psia in steam using 8800 MultiVariable (MCA option)
± 1.3% of rate at 300 psia in steam using 8800 MultiVariable (MCA option)
± 1.6% of rate at 800 psia in steam using 8800 MultiVariable (MCA option)
± 2.5% of rate at 2,000 psia in steam using 8800 MultiVariable (MCA option)
± 0.65% of volumetric rate for liquids (uncompensated)
± 1% of volumetric rate for gas and steam (uncompensated)
Turndown
38:1
Output
4-20 mA with HART® 5 or 7
4-20 mA with HART® 5 or 7 and scalable pulse output
FOUNDATION fieldbus ITK6 with 2 Analog Input blocks, 1 Backup Link Active Scheduler function block, 1 Integrator function block, and 1 PID function block
Modbus RS-485 with device status and 4 variables
4-20 mA with HART® 5 or 7 and scalable pulse output
FOUNDATION fieldbus ITK6 with 2 Analog Input blocks, 1 Backup Link Active Scheduler function block, 1 Integrator function block, and 1 PID function block
Modbus RS-485 with device status and 4 variables
