SAFE TRANSPORTATION OF LIQUID SULPHUR

Transcription

1 SAFE TRANSPORTATION OF LIQUID SULPHUR Safety, Reliability and Performance SAFE TRANSPORTATION OF LIQUID SULPHUR 1

2 HEATED SULPHUR PIPELINE CHALLENGES SAFE TRANSPORTATION OF LIQUID SULPHUR 2

3 SULPHUR PROPERTIES & TRANSPORTATION ISSUES Sulphur Properties Flows only in a small temperature range: 130 C (266 F) 145 C (293 F) Requires accurate temperature monitoring and tight control Shrinks in volume as it solidifies Highly Viscous at Elevated Temperatures Combines with water and other gasses to create hazardous/dangerous compounds Sulfuric Acid Sulphur Dioxide Consistent, Controlled Temperature is Key to Sulphur Pipeline Flow Assurance SAFE TRANSPORTATION OF LIQUID SULPHUR 3

4 SULPHUR VISCOSITY VS. TEMPERATURE GRAPH 1, ,000 Viscosity - Centipoise Melting Point 119ºC (246ºF) Sulphur Pipeline Operating Range 130ºC 145ºC (266ºF 293ºF) Boiling Point 444ºC (832ºF) (200) (300) (400) (500) (600) (700) (800) (900) 10,000 1,000 Viscosity - Centipoise Temperature ºC (ºF) Sulphur Has a Tight Operating Temperature Range - Often Within C of Its Solidification Temperature SAFE TRANSPORTATION OF LIQUID SULPHUR 4

5 SULPHUR PROPERTIES & TRANSPORTATION ISSUES Transportation Challenges Reliable, controllable heating system must operate over long distances Small operating temperature band requires well designed insulation, pipe support and heat tracing control and monitor solutions High operating temperatures require experienced heating solution designers to accommodate pipeline expansion and contraction Temperature monitoring blind spots create potential areas for solidification Many factors along the pipeline cause variable heat-up/cool-down rates Elevation changes affect heating and re-melt programs Unmonitored re-melt programs can allow large chunks of solid sulphur to travel down the pipeline creating a risk for pipeline damage at bends or corners Many Elements Must be Considered for a Reliable Pipeline Heating Solution SAFE TRANSPORTATION OF LIQUID SULPHUR 5

6 IMPROPER DESIGNS HAVE CONSEQUENCES SAFE TRANSPORTATION OF LIQUID SULPHUR 6

7 SAFETY, ENVIRONMENTAL & OPERATIONAL ISSUES A Reliable System Requires the Right Technology, Experienced Design and Proper Installation SAFE TRANSPORTATION OF LIQUID SULPHUR 7

8 ANCHOR FAILURE FROM THERMAL EXPANSION Improperly Engineered Pipe Anchor Support SAFE TRANSPORTATION OF LIQUID SULPHUR 8

9 BLOCKED PIPELINE DUE TO SOLIDIFICATION Solidified Sulphur Can Completely Fill the Pipeline at a Low Point SAFE TRANSPORTATION OF LIQUID SULPHUR 9

10 IMPROPER RE-MELT PROGRAM Pipeline Rupture Can Occur Due to Overpressure During Re-Melt SAFE TRANSPORTATION OF LIQUID SULPHUR 10

11 S INTELLIGENT SULPHUR PIPELINE SOLUTIONS SAFE TRANSPORTATION OF LIQUID SULPHUR 11

12 OBJECTIVES FOR A HEATED SULPHUR PIPELINE Minimize capital and operating expenses through an efficient thermal design Maximize Flow Assurance reliability through optimization of the heating system design and monitoring tools for pipeline operators Provide the ability to safely re-melt sulphur in the event of a solidification event Pipeline Solidification or Rupture Disrupts Operations and has Major Economic Impacts SAFE TRANSPORTATION OF LIQUID SULPHUR 12

13 S INTELLIGENT SULPHUR PIPELINE Multiple Engineering Disciplines Needed For Sulphur Pipelines Necessary Components For a Properly Designed Sulphur Pipeline Heating System SAFE TRANSPORTATION OF LIQUID SULPHUR 13

14 HEATING SYSTEM DESIGN CONSIDERATIONS Tight Temperature Maintenance Optimum sulphur viscosity between 135 C 145 C (275 F 293 F) Redundancy Recommended Redundant heat tube can maintain heat if the primary heater fails Used to assist with re-melt if necessary Pre-Insulated Thermal Insulation Avoid gaps, non-uniformities and water ingress Pipe Supports and Anchors Designed to avoid heat sinks and allow pipeline movement Distributed Temperature Sensing and Feedback for Operational Control Re-melt Plan Provided Prevent hot/cold spots, pressure build up and helps to avoid over heating at voids throughout the pipeline Various Design Elements Should be Considered to Ensure That Pipelines Perform Properly During Heat-up Events SAFE TRANSPORTATION OF LIQUID SULPHUR 14

15 STATE OF THE ART SULPHUR PIPELINE HEATING SOLUTIONS Skin-effect Heat Tracing System provides controlled, uniform heating power over long distances. Heat tube redundancy increases the safety factor Pre-insulated Piping provides a predictable thermal envelope which reduces heat loss and uniform pipeline heating Thermally Isolated Pipe Supports & Anchors reduces the potential for cold spots, providing a uniform thermal profile along the entire length of the pipeline Fiber Optic Distributed Temperature Sensing (DTS) allows real time temperature monitoring for the pipeline Re-melt Procedures based on proven methodology, enhanced by predictive FEA Modeling & DTS feedback Pentair Has Created the Ultimate Solution, Ushering in a New Era of Sulphur Pipeline Transportation SAFE TRANSPORTATION OF LIQUID SULPHUR 15

16 RAYCHEM STS TECHNOLOGY OVERVIEW Raychem Skin-effect Tracing Systems are Engineered and Supplied as Completely Integrated Systems SAFE TRANSPORTATION OF LIQUID SULPHUR 16

17 RAYCHEM S PROVEN SKIN EFFECT HEATING TECHNOLOGY Raychem Skin Effect Heat Trace (STS) technology dates to the 1970 s Used for circuit lengths up to 25 kilometers (15 miles) and power outputs up to 150 W/m (49.2 W/ft) Custom engineered for each application 30 successful sulphur pipeline installations throughout the world Pentair STS: Designed and Installed on The World s Longest Heated Sulphur Pipeline SAFE TRANSPORTATION OF LIQUID SULPHUR 17

18 BENEFITS OF PRE-INSULATED PIPE (PIP) Better quality control of the thermal insulation envelope Significant cost savings during pipeline construction through space & manpower savings Compressed construction schedules Reduction of risk on-site Pre-Insulated Pipe is a Perfect Fit for High Temperature Pipelines SAFE TRANSPORTATION OF LIQUID SULPHUR 18

19 PIPE SUPPORTS & ANCHORS - NOT JUST A STRUCTURAL ISSUE Movement and Thermal Properties Must Also be Considered SAFE TRANSPORTATION OF LIQUID SULPHUR 19

20 FIBER OPTIC TEMPERATURE SENSING A distributed temperature sensor along the full pipeline length Dedicated carbon steel encasement tube and armored casement protects the fiber optic cable Fiber Optic Cable measures the actual pipe temperature, not just the heating element DTS technology provides accurate and timely notification of out-of-range pipeline temperatures Alarms provided to the operator regarding the position and intensity of any extreme temperature event which could jeopardize sulphur flow Identification and troubleshooting of heat sinks or cold spots Locations identified with +/- 1 meter accuracy DTS is particularly useful during the re-melt process of solidified sulphur, making the process predictable, safe and reliable The DTS System is Useful During Sulphur Introduction, Normal Operation and Re-Melt SAFE TRANSPORTATION OF LIQUID SULPHUR 21

21 PIPELINE TEMPERATURE SENSING & ALARMS Cold or hot spots quickly identified Provides actionable information to help prevent solidification Invaluable during remelt to prevent overheating Used for preventative maintenance as the pipeline ages and insulation is damaged or compromised Pentair Has a Proven Track Record of Effective DTS integration Into the Sulphur Pipeline Heating System Technology SAFE TRANSPORTATION OF LIQUID SULPHUR 22

22 BENEFITS OF DTS FROM START-UP TO RE-MELT Commissioning support (initial heat up) Introduction of product Validate performance testing DISTRIBUTED TEMPERATURE SENSING Thermal envelope integrity monitoring Pipeline repair and maintenance monitoring Problem trouble shooting Pipeline Operations Temperature monitoring and alarm notification Identify potential blockage Leak detection DTS is a Stethoscope For The Entire Pipeline SAFE TRANSPORTATION OF LIQUID SULPHUR 23

23 STS SYSTEM SULPHUR RE-MELT PROGRAMS Flexible Power output from the Skin-effect Heat Tracing system FEA modeling to predict temperature profiles and re-melt scenarios Fiber optic based Distributed Temperature Sensing to monitor the temperature along the entire pipeline during the remelt process Multiple re-melt procedures to address the installed pipeline conditions and anomalies A Safe and Reliable Re-Melt Procedure Minimizes Expansion Forces and Other Stresses on a Pipeline SAFE TRANSPORTATION OF LIQUID SULPHUR 24

24 S SULPHUR PIPELINE SOLUTIONS Expertise gained from the successful completion of over 30 Sulphur pipeline transport projects globally Full product portfolio and integration capabilities provide a single vendor heat management solution Experienced Engineering and Construction capabilities to support the sulphur pipeline system design, material supply and installation Global team to provide local support when needed Full pipeline commissioning and post construction support capabilities to ensure that the pipeline operates as designed See a list of Sulphur Pipeline references and success stories at: Pentair Offers Complete Sulphur Pipeline Service Solutions SAFE TRANSPORTATION OF LIQUID SULPHUR 25

25 THANK YOU SAFE TRANSPORTATION OF LIQUID SULPHUR 26