Dr. Wolfgang Paul - RUHRPUMPEN
Overview
Ruhrpumpen developed a system with many features to perform a reliable and safe decoking process. Ruhrpumpen provides a system on a high safety level with very good drilling and cutting performance.
Targets
The basic targets for a good decoking system are:
- Short cutting time for shot and sponge cokers
- Reasonable cutting time with low coke fines to produce good quality coke
- Trouble free and safe operation
- Favorable maintenance capabilities to avoid unplanned downtime
Decoking System
The Ruhrpumpen Auto-switch Tool is a key component to reduce manual interaction to decoke a drum, but it is not the only one.
The decoking system itself is grouped with components as follows
- Pump area
- Pump unit and decoking valve,
- Bleed value
- Structure, Cutting deck
- Hoist, Isolation valve
- Operator shelter,
- Top deheading valve
- Floating dome with guide plate
- Structure, Derrick
- HP-water hose
- Crosshead with Free Fall Arrestor
- Guide rails with position switches
- Latching device
- Drill Stem with Auto Tool
- Control System
- Main Panel
- Safety operator Shelter with integrated Operator panel
The main components are known, but the features and options bring the difference.
- Pump unit:
- proven design, to provide enough flow and head
- Hoist:
- Special decoking hoist with high pull-force, pull-speed,
- Slack-rope device, triple brake system,
- Hydraulic driven hoist with certificates for all areas,
- Electric driven hoist with certificates for normal and low temperatures and ex-areas (-45C, ATEX, CSA, UL, GOST)
- Crosshead with Free Fall Arrestor system
- Normal and low temperature version up to a load of 8500 kg
- Drill Stem Drive
- Normal and low temperature version
- Pneumatic, hydraulic or electrical driven with certificates (ABSA, ATEX, GOST)
- Dome with floating drill stem guide
- RP patented dome design with floating drill stem guide to avoid drill stem bending during coking and quenching and cutting.
- Proven interface with existing top deheading valve arrangements
Ruhrpumpen support matrix
Ruhrpumpen developed a support matrix for special components and calculations, which could be related to the decoking system.
The extended RP decoking system includes
- a set of instruments to verify the “Jet to wall and coke fall out”
The system includes a set of vibration and acoustic instruments, connected to the PLC system
- Extension of the RP-logic system
Data measurement: Following data will be measured and provided
– does the water jet hit the wall
– does the coke fall out
- Procedure for operation
– procedures to control hoist operation
– procedures to avoid overloading of crushers
– procedures to avoid stuck tools
- Extension of RP control system
– Remote operator panel
– Operator consoles for automatic coke cutting
Ruhrpumpen provides a system of calculation programs
- weights and loads in the derrick
- forces and moments
- pressure losses in pipe systems
- calculation for flow, head, jets
- temperature and flow distribution in coke drums
Ruhrpumpen Auto Tool
Ruhrpumpen developed the known RUHRPUMPEN Auto Tool with these features
- slim design
- favorable drilling and cutting performance
- anti stuck tool program and procedures
- tailor-made switch versions with different switch pressure
- optimized dome and drill stem guide device
- favourable maintenance capabilities
- tailor-made nozzle arrangements for different coke types
- reduced size of top deheading valves
Summary
Ruhrpumpen provides a modern cutting system to meet the actual conditions for modern cokers as well as to upgrade existing cokers. Remote and automatic coke cutting is a standard option for every Ruhrpumpen decoking system, running in several locations.