Post on 07-Aug-2020
transcript
June 2016
Costain Patent Summary
Cryogenic NGL Recovery (Ethane+)EP1114808, NO319775
2
Application:
• High C2+ recovery from natural gas
Products:
• Sales Gas & NGL (C2+)
Key Benefits:
• High C2 recovery (98%)
• 100% C3 recovery
• Improvement over existing processes:
– Higher recovery for same power or;
– Same recovery with lower power
– Obtained by good energy integration with multistream exchangers
Expiry Date: 2020
Reference: M. Nawaz & A.J. Finn, “Flowsheet Synthesis and Design of Demethaniser Processes”, GPA
Europe Annual Conference, Berlin 2012
Cryogenic NGL Recovery (Propane+)EP1137616, US6581410
3
Application:
• High C3+ recovery (C2 rejection) from natural gas
Products:
• Sales Gas & NGL (C3+)
Key Benefits:
• Very high C3 recovery (97%)
• Very high C2 rejection (99%)
• 1st High Pressure column increases compressor
suction pressure and reduces power consumption
• Improvement over existing processes:
– Higher recovery for same power or;
– Same recovery with lower power
– Obtained by good energy integration with multistream exchangers
Expiry Date: 2019
Reference: A.J. Finn, T.T. Tomlinson & G.L. Johnson “Design, equipment changes make possible high
C3 recovery, OGJ Jan 2000
Nitrogen Rejection – Medium-High NitrogenGB2455462, EP2433075
4
Application:
• Processing low Calorific Value (CV) natural gas to meet
customer specification (increasing CV through N2 rejection)
• Functions with a wider range of N2 content gas than
traditional double column schemes
Products:
• Sales gas & waste nitrogen stream suitable for atmospheric
venting (very low CH4 content)
Key Benefits:
• Very high hydrocarbon recovery
• Integrated condenser-reboiler
– Low power consumption scheme
• Additional feed stream to low pressure column
– Enables processing of low N2 feed gas (>20 mol%) (traditional double
column >35 mol%)
– Improves separation efficiency
Expiry Date: 2029
Reference: G.L Johnson & D. Wilkinson, “An Abu Dhabi Case Study”, Hydrocarbon Engineering
February 2012
Nitrogen Rejection – Low NitrogenGB2456691, EP2432575, AU2010/227260
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Application:
• Processing low Calorific Value (CV) natural gas to meet
customer specification (increasing CV through N2 rejection)
• Pre-separation column located upstream of N2 rejection
scheme (double column shown as typical only)
Products:
• Sales gas & waste nitrogen stream suitable for
atmospheric venting (very low CH4 content)
Key Benefits:
• Very high hydrocarbon recovery
• No condenser required for pre-separation column
• Reduction in flow to downstream equipment reduces
equipment size and cost
• Enables processing of low N2 content feed gas
Expiry Date: 2029
Reference: J. Arizmendi-Sanchez & A.J. Finn, “Nitrogen Removal for Chemicals Production”, PTQ
Gas Supplement April 2016
Nitrogen Rejection - High CO2 Tolerance EP2984428, US2016/054054, AU2014/252681
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Application:
• Nitrogen rejection scheme tolerant of ‘high’ CO2 feed
(<4mol%), surpassing established technologies which can
often be limited to 0.3mol% CO2
Products:
• Sales gas & waste nitrogen stream suitable for
atmospheric venting (very low CH4 content)
Key Benefits:
• High CO2 freezing tolerance
• Can remove/reduce requirement for upstream CO2
removal (eg AGRU)
– Capex/Opex saving
– Reduction in equipment items & footprint
Operating Considerations:
• Feed: < 40 mol% N2
Reference: A. Farooq, A Hosainy, A.J. Finn & G.L Johnson, “CO2 Tolerant Nitrogen Rejection Reduces
Cost”, GPA Florence Sept 15
Expiry Date: 2034
Nitrogen Rejection - LNGGB2462555, EP2507567, US2012/0285196, AU2010/322827
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Application:
• Nitrogen rejection from LNG to increase fuel gas calorific value
and/or mitigate storage safety concerns (auto-stratification and tank
rollover)
Products:
• LNG to storage, waste nitrogen stream suitable for atmospheric
venting (very low CH4 content)
Key Benefits:
• Very efficient
• Very high hydrocarbon recovery
• Easy integration into new/existing plant
• Low complexity, footprint & cost
• Simple to control
Reference: A.J. Finn, “Nitrogen Removal”, LNG Industry Jan/Feb 2013
Expiry Date: 2029
LNG - ProductionGB2479940, EP2564139, AU2011/247081
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Application:
• Small scale LNG production
• Floating LNG / small onshore plants
Products:
• LNG to storage
Key Benefits:
• Use of brake compressor for feed gas:
– No requirement for standalone feed compressor
– Beneficial for process integration
– Lower specific power consumption
• Simple operation
• Low equipment count & weight
• Small footprint
Reference: A. Jones & G.L. Johnson, “A New Process for Improved Liquefaction Efficiency”, GPAE
September 2013
Expiry Date: 2030
CO2 - Low Temperature Purification 1GB2489197
9
Applications:
• Carbon Capture from high CO2 production plants
– e.g. Power, cement & steel works etc…
Products:
• High purity CO2 stream and reduced CO2 waste stream
suitable for atmospheric venting
Key Benefits:
• High CO2 recovery (>96%)
• High CO2 purity (>96%) suitable for sequestration
• Simple flow scheme & operability
• Well integrated therefore low power requirement
Operating Considerations:
• Feed composition > 40% CO2
Reference: A.J. Finn et al, “Study of design parameters affecting the performance of CO2 purification
units in oxy-fuel combustion”, 12th November 2012
Expiry Date: 2031
CO2 - Low Temperature Purification 2 GB2490301
10
Applications:
• Carbon Capture from high CO2 production plants
– e.g. Power, cement & steel works etc…
Products:
• High purity CO2 stream and reduced CO2 waste stream
suitable for atmospheric venting
Key Benefits:
• High CO2 recovery (>93%)
• Very high CO2 purity (99%) suitable for sequestration
• Simple flow scheme & operability
Operating Considerations:
• Feed composition >40% CO2
Reference: A.J. Finn et al, “Study of design parameters affecting the performance of CO2 purification
units in oxy-fuel combustion”, 12th November 2012
Expiry Date: 2031
CO2 - Low Temperature Purification 3GB2489396
11
Applications:
• Carbon Capture from high CO2 production plants
– e.g. Power, cement & steel works etc…
Products:
• High purity CO2 stream and reduced CO2 waste stream
suitable for atmospheric venting
Key Benefits:
• Very High CO2 recovery (>98%)
• Very high CO2 purity (>98%) suitable for sequestration
• Simple flow scheme & operability
Operating Considerations:
• Feed composition >40% CO2
Reference: A.J. Finn et al, “Study of design parameters affecting the performance of CO2 purification
units in oxy-fuel combustion”, 12th November 2012
Expiry Date: 2031
CO2 - Low Temp Separation from Hydrogen GB2490476, EP2850375
12
Applications:
• Carbon Capture
– e.g. Reformed natural gas, coal/biomass gasification
Products:
• Very high purity CO2 stream and a H2 rich stream
suitable for combustion
Key Benefits:
• Very high H2 recovery (>99%)
• Very high CO2 purity (>98%)
• High CO2 recovery (>93%)
• Simple flow scheme & operability
Operating Considerations:
• Feed composition >40% CO2
Expiry Date: 2031
Reference: A.J. Finn et al, “Study of design parameters affecting the performance of CO2 purification
units in oxy-fuel combustion”, 12th November 2012
CO2 - Low Temp Separation from HydrocarbonsGB2521177
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Applications:
• Enhanced Oil Recovery (EOR)
Products:
• Sales gas & CO2 enriched NGL stream
Key Benefits:
• Product CO2/NGL streams:
– Produced at high pressure (minimise CO2 recompression)
– Produced CO2 dry and very low in CH4 (essential for EOR)
• Processes wide range of CO2 feed comp (10% - 70%+)
• Lower cost, solvent recycle & downstream processing (2
dissimilar feed streams) vs existing technologies e.g. Ryan
Holmes
Operating Considerations:
• CO2/NGL liquid streams to be further fractionated to separate
the CO2 and NGL (both with low CH4 content)
Reference: T.R. Tomlinson, A.J. Finn, M. Nawaz, “Enhancing Oil Recovery, Oilfield Technology”, Dec 2015
Expiry Date: 2033