Drum Unheading Technology to - Refining...
Transcript of Drum Unheading Technology to - Refining...
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Drum Unheading Technology
to
Enhance Safety and Productivity
Calgary, Canada
September 11 – 18, 2009
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• Z&J Company - since 1877
• Delayed Coker - Generic
• Z&J Product offering
• Double Disc – Single Disc…..
• Z&J Double Disc – Details and Features
• Actuation Options
• Final Considerations
Agenda
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Production Capabilities
Large Production Area & continued hiring of qualified Personnel
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Z&J Technology Applications
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DC Product Offering
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HPUSpring Hangers
Top UnheadingIsolation
Bottom Unheading
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• What are the differences to conventional single plate sliding valves ?
• What makes Z&J’s Unheading Technology so unique ?
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Z&J’s Unique Technology
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Z&J’s Unique Technology(1)
� Double Disc - Triple Seal & Purge - 100% tight� Circular discs� Active seating force� Scraper and guide plates avoid coke fines entering body � No cooling water� Manual or automated blocking pin
� Ability to throttle coke & water mixture � Minimize maintenance downtime� No need for capital spare parts � Low steam consumption
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Single Rectangular Plate
• Random temperature distribution
• Sensitive to distortion
• Resulting in leakage & excess steam consumption
Double Disc vs.
Single Plate Slide Valve
Innovative Double Disc Design
• Round disc, more equal temperature distribution
• Limited distortion, less deformation
• 10 x less risk to leaks
• Best choice for DC applications
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DISC CARRIER
THROUGHWAY
2 FLOATING DISCS
REMOVABLE SEAT RING
DETAIL A
Robust Double Disc - Triple Seal
Design
WEDGE
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Unique Technology
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Minimize downtime & maintenance costNo need to dismantle body for valve inspectionand maintenance on upper seat and upper discif needed
Inspection - Maintenance Position - TA
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Unique Technology
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Inspection - Maintenance Position - TA
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Only 2 gaskets to replace
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Unique Technology
Inspection - Maintenance Position - TA
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No need to dismantle valve bodyEasy access for inspection internalsNo need for capital spares
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GUIDE PLATE
DISC
SPRING LOADED
SEAT
SCRAPER EDGE
REMOVABLE UPPER SEAT RING
Double Disc - Triple Seal
SEAL STEAM BETWEEN TWO SEATS
HARD - FACED SEAT
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REMOVABLE UPPER SEAT RING & DISC
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Double Disc - Triple Seal
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Unique Technology
The only double block & purge
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UNIQUE Z&J - DOUBLE DISC TRIPLE SEAL & PURGE
2 x 3 = 6… MEANING 100 % TIGHT !
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Unique Technology
Active seating force
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Helps sealing and avoids possible deformation
Controlled discharge
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Unique Technology
Scraper & guide plates avoid coke fines to enter valve-body
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Disc is maintained against seat / scraper at all times by means of pretensioned springs
to avoid coke fines to enter valve-body
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Unique Technology
Ability to throttle coke & water mixtures
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Dewatering to optimize cycle timeCapable of crushing shot coke
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Z&J’s Unique Technology(2)
� Actuator(s) outside of valve body� 100% actuator redundancy� Pneumatic driven emergency HPU cart
� Actuator options, customized to fit� Solution to overcome weight aspect� Revamp engineering, design and execution of lower drum
section
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Unique TechnologyActuator Options
ELECTRIC/HYDRAULIC
Single HYDRAULIC Compact HYDRAULIC Wide
MINIMIZE CAPEX – ACCOMODATE SPACE
9 m 8 m 7 m
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Unique Technology
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Comfort in freezing conditionsNo cooling with glycol
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Unique Technology
Actuator(s) outside of valve body
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• No need to dismantle valve body
Can be removed while DC unit in operation
• 100% Actuator redundancy
Operates on one single actuator
No need to keep spare actuator
For single actuator, pneumatic back-up / HPU cart
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Unique Technology
Manual or automated blocking pin
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Unique Technology
Customized to fit
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Extended unheading deck
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Unique Technology
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Customized to fit
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Technology Solution
Solution to overcome weight aspect
Coker Upgrade: Engineering - Design - Execution Assistance
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Supporting beams to reinforce structure
Spring hangers to minimize load on drum
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Technology Solution
Coker Upgrade: Engineering - Design - Execution Assistance
Customized to fit
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Tailor - made cones for revamps
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Technology Solution
Coker Upgrade: Engineering - Design - Execution Assistance
Customized to fit
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Tailor - made cones for revamps
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Bottom Unheading - Inspection
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Supervision Installation & Commissioning
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Global Presence & Support