Introductions Resid Hydrocracking reactor bed density€¦ · Axens –H-Oil (Shenua, Bourgas,...
Transcript of Introductions Resid Hydrocracking reactor bed density€¦ · Axens –H-Oil (Shenua, Bourgas,...
![Page 1: Introductions Resid Hydrocracking reactor bed density€¦ · Axens –H-Oil (Shenua, Bourgas, Sinopec, PKN, etc) CLG –LC-Fining (Eni/AGIP) Eni’s –EST (Sannazzaro) KBR –VCC](https://reader034.fdocuments.in/reader034/viewer/2022052012/602965ce5081a3106c7e5e8a/html5/thumbnails/1.jpg)
Process Control
Introductions Resid Hydrocracking reactor bed density
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Process Control 2
▪ Units that typically use Radiometric
▪ Desalters
▪ Alkylation
▪ Tower Bottoms
▪ Delayed Coker
▪ Resid Hydrocrackers
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Process Control
Experience
▪Experience with
▪ Axens – H-Oil (Shenua, Bourgas, Sinopec, PKN, etc)
▪ CLG – LC-Fining (Eni/AGIP)
▪ Eni’s – EST (Sannazzaro)
▪ KBR – VCC (Taif)
▪14 out of the 25 operating units
▪ 5 of the last 7 projects
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Process Control 4
Titel der Präsentation (Fußzeile)
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Process Control 5
▪Reactors
▪ Separators
▪ Catalyst Handling/Transfer
▪ Towers/Columns
Vessels with Radiometric
Titel der Präsentation (Fußzeile)
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Process Control 6
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Process ControlDrawing from CLG’s Website
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Process Control
▪Using Drilled Bore
▪Reactors
▪Liquid/Vapor Separators
▪High Temperature and High Pressure
▪Catalyst Transfer Vessels
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Process Control
▪Using Drilled Bore
▪Reactors
▪Liquid/Vapor Separators
▪High Temperature and High Pressure
▪Catalyst Transfer Vessels
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Process Control
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Process Control
▪Parameters
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Process Control
▪Parameters
▪Depth of Bore hole (remaining wall thickness)
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Process Control
▪Parameters
▪Depth of Bore hole (remaining wall thickness)
▪ Process Path (distance from wall to source well
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Process Control
▪Parameters
▪Depth of Bore hole (remaining wall thickness)
▪ Process Path (distance from wall to source well
▪Max Density reading
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Process Control
▪Parameters
▪Depth of Bore hole (remaining wall thickness)
▪ Process Path (distance from wall to source well
▪Max Density reading
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Process Control 16
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Process Control 17
▪ Bed Density
▪ 0-65kg/m3 – Vapor
▪ 65- 500kg/m3 – Foam
▪ 500-950 kg/m3 – hydrocarbon liquid
▪ 800-1200kg/m3 – hydrocarbon liquid and catalyst (ebulliated/suspended)
▪ 1200-1400+kg/m3 – Slumped bed
Typical operating densities
Titel der Präsentation (Fußzeile)
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Process Control 18
Titel der Präsentation (Fußzeile)
Vapor 0-65kg/m3
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Process Control 19
Titel der Präsentation (Fußzeile)
Foam 65-500kg/m3
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Process Control 20
Titel der Präsentation (Fußzeile)
Oil 500-950kg/m3
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Process Control 21
Titel der Präsentation (Fußzeile)
Oil/Catalyst 950-1600kg/m3
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Process Control 22
▪ Level Control
▪ Too Low
▪ Slumping of the bed (bed compression)
▪ Poor distribution of catalyst
▪ Can create “hot spots”
▪ Too High
▪ Catalyst carryover
▪ Pump damage
▪ Long repair time
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Process Control 23
▪Advance Controls
▪ Vapor/Solids Holdup Calculations
▪ Increased Unit Performance
▪ Increased Unit Reliability
▪ Needs Better Resolution
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Process Control
▪ Distance from Detector to Vessel wall
▪ Insulation Thickness
▪ Process Path
▪ Source well thickness
▪ Distance from source to well wall
Making Density MeasurementParameters - Fixed
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Process Control
▪ Process Density
▪ Calculate Absorption
Δ𝐼 = 𝑒−µΔρ𝑡
µ = Absorption Coefficient
ρ = Material Density
t = Material Thickness
Making Density MeasurementParameters - Variable
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Process Control 26
▪ Density span – 0-1400kg/m3
▪ Source Size – 1000mCi Cs-137
▪ Process Path – 800mm
Making Density Measurement
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Process Control 27
▪ Density span – 0-1400kg/m3
▪ Source Size – 1000mCi Cs-137
▪ Process Path – 700mm
Making Density Measurement
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Process Control 28
▪ Density span – 0-1400kg/m3
▪ Source Size – 1000mCi Cs-137
▪ Process Path – 700mm
Making Density Measurement
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Process Control 29
Filtering
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Process Control 30
Filtering
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Process Control 31
Filtering
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Process Control 32
▪ Density span – 0-1400kg/m3
▪ Source Size – 1000mCi Cs-137
▪ Process Path – 600mm
Making Density Measurement
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Process Control 33
▪ Density span – 0-1400kg/m3
▪ Source Size – 1000mCi Cs-137
▪ Process Path – 600mm
Making Density Measurement
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Process Control 34
▪ Density span – 0-1400kg/m3
▪ Source Size – 500mCi Cs-137
▪ Process Path – 600mm
Making Density Measurement
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Process Control 35
▪ Parameters effecting density measurement
▪ Process path (fixed)
▪ Density range (fixed)
▪ Size of Source
▪ Increased source to increase resolution/decrease time constant
▪ Increase Time constant
▪ Increased Time constant to increase resolution, but delays reading
▪ Detector Sensitivity
▪ Higher sensitivity is the same as increasing the source size.
▪ Increased Resolution/decerease time constant/reduce source size or keep existing sources
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Process Control
Thank you for your attention!!!!
David Williams
Global Business Development Manager
Berthold Technologies
+1 865 604 4424