For decades, air-driven piston boosters have been the imposed decision. Unfortunately, many users have experienced poor reliability, especially when requiring long periods of operation. The need for seal gas flow beyond the design’s ability, has also contributed to their poor performance.
The air driven systems are complex, not only for the booster itself but for the controls to ensure its operation, over pressure protection and seal wear monitoring. With their many moving parts and high utility requirements, these maintenance-intensive systems are a very uneconomical choice.
Piston type booster flow capabilities are often below minimum flow requirements. Two or more of these units are required to achieve the minimum process labyrinth velocity. The choice is then to accept lower than recommended velocities or a higher air consumption and cost associated with multiple units.
An application-oriented comparison illustrates the RoTechBooster cost advantages over an air-driven piston booster.
|Dynamic seal gas boosters||Positive displacement seal gas boosters|
|Booster 2||Booster 3||Booster 1||Booster 2||Booster 3||Benefits a RoTechBooster delivers|
|Maximum Allowable Working Pressure (MAWP)||1,000 bar (14,500 psi)||350 bar
|n/a||114 bar||1,500 bar
|Simpler and more compact solution to incorporate into a seal gas system. Proven high-pressure capability for offshore, gas reinjection and high-pressure pipelines.|
|Temperature range||-70 ... 250 °C
(-94 … 482 °F)
|-20 ... 180 °C
(-4 … 356 °F)
|n/a||30 ... 99 °C
(-22 … 210 °F)
|... 100 °C
(… 212 °F)
|... 200 °C
(… 392 °F)
|Operating references from cryogenic to high temperature applications.|
(in operating hours)
|24,000 h||24,000 h||n/a||8,000 h||1,000 h||2,500+ h||Units with 24,000 hrs of operation to support specified maintenance cycles.|
high efficiency coupling
|n/a||Titanium||n/a||n/a||A magnetic coupling is the most environmentally friendly solution, as it eliminates the need for seals and leakage associated with them.|
|Leakage||None||None||None||None||Significant||Significant||EagleBurgmann has extensiveexperience with all magnetic coupling designs and has selected its high efficiency couplings due to the benefits it brings to the application; such as energy efficiency and proven technology to 1,100 Bar.|
|Optional||Mandatory||n/a||Mandatory||n/a||n/a||No VFD is required for most applications, which simplifies implementation.|
|Energy||Electric||Electric||Electric||Electric||Pneumatic||Pneumatic||The RoTechBooster consumes ~41% less energy than an air-driven booster to generate seal gas flow for the same application.|
|Efficiency at generating flow||Highest||High||High||Medium||Low||Low||The RoTechBooster is the most efficient for providing the highest flow capacity of all seal gas boosters.
|Additional API 692
1. Cycle counter
1. Cycle counter
|The RoTechBooster complies with API 692 and delivers the same seal gas velocity across the process labyrinth during a static condition as that required in a dynamic condition. There is no concern with relaxing the velocity for a static condition as identified in API 692.|
|ATEX||Zone 1||Zone 1||Zone 2||Zone 1||Zone 1||Zone 1||The RoTechBooster can be certified for Zone 1 allowing its use in more stringent electrical environments. Has been certified for many regions and applications around the world.|