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DESCRIPTION
Bronswerk Heat Transfer was present at the recent LNG summit in Barcelona. During our workshop we discussed 3 cases : debottlenecking air cooled coolers onshore & offshore and debottlenecking LNG trains. Feel free to read this content, like it or share it. Thank you :-)TRANSCRIPT
Dynamic ACC Solutions Debottlenecking Air Cooled Coolers
Sjaak Remmerswaal
Barcelona – October, 2014
Index
• Introduction Bronswerk • Whizz-wheel®
• Case 1: Debottlenecking – ACC offshore
• Case 2: Debottlenecking – ACC onshore
• Case 3: Debottlenecking LNG train
• Additional solutions
History:
1940
1988 – Privately owned
2014
What we do:
• Process design • Thermal design • Mechanical design • Manufacturing • Supply • Installation & Commissioning • After market
Reasons for lack of duty: • Original design was (too) small • Fouling of the cooler • Influence of wind • Higher cooling air temperature, because:
– Global warming – Local warming – Hot air recirculation
Whizz-wheel®: Develop ultra low noise fans to meet the stricter client requirements.
Conventional :
Whizz-wheel®: Main features •Rim •Small hub •Blades are fully curved
Whizz-wheel® : Developed for low noise: 6 – 20 dB lower noise Benefits: • 45 - 60% lower absorbed power • Up to 40% more cooling air flow with same absorbed power • Or a combination
• Minimal vibrations • Rigid construction • Less sensitive to wind
CASE 1: Debottlenecking 2 new gas compression modules – Mexico Litoral-A
Case description : Plant • Existing platform • Two new gas compression trains (modules)
Challenges: 1. Plot space 2. Maximal absorbed power 3. Maximum noise level
Solutions :
Conventional Whizz-wheel®
Plot space area 582m2 412m2
Installed motor power 390 kW 308 kW
Sound pressure level 90 dB(a) @ 1m <85 dB(a) @ 1m
Total height 7,6m 7m
Total weight of units 141 ton 126 ton
Results: • 40% reduced plot space • 24% lower absorbed power • 8% reduced height • 12% less weight • No noise issues
Quote PM: “without the whizz-wheel we could not have executed this project.”
CASE 2: Debottlenecking Air Cooled Coolers – Germany
Case description: Plant • 120.000 barrels/day • Located in a populated area • More then 60 fans • Different services Challenge: • Reduce high noise
emissions
Solutions : Option 1: Standard low noise fans • Noise level of 72 dB(a) • 12,6 kW absorbed power
Option 2: Whizz-wheel ® system • noise level of 66 dB(a) • 5,6 kW absorbed power
Results: • 20 dB(A) proven lower noise • 56% lower absorbed power • 5% more airflow • Installation during operation
CASE 3: Debottlenecking LNG train – SE Asia
Case description: Plant • Several LNG trains • Located in SE Asia
Challenge: • Wind gusts causing Hot Air Recirculatoin (HAR)
– Increased condenser pressure – Compressor trips
Challange : Wind gusts causes under pressure below bundles which results in HAR / increased condenser pressure / compressor trips.
Solution - Sreen: • Screen creates overpressure • Eliminate HAR
Results: • All temperature spikes are eliminated • Compressor operating point increased
Air side Fouling • Prevention (screens) • High pressure water cleaning • Dry cleaning
Fogging • Decrease ambient air temperature
Site Survey What is your specific challenge? • Intensification of your plant • Increased ambient air temperature • Wind • Hot Air Recirculation • Air side fouling • Vibrations • damaged fans • ..
With a Site Survey the problem can be identified and a solution is within reach!
Thank you for your attention. Questions?
