Enexis, a gas provider in the Netherlands, is equipped with a RPS-demister for condensate removal at a gas distribution station. The RPS handles the full gas flow of the station(16,000 Nm3hr-1, 8 bar, -15 °C) (14 MMSCFD, 120 PSI, 5 °F).
Multi purpose demonstration unit presented on the left with computer aided design shown on the right. The unit which can handle 2400 Nm3hr-1 at 8 bar and 20 °C (2 MMSCFD, 120 PSI, 70 °F) was tested at Eindhoven University with water and air. The unit features an optional drive with magnetic coupling. The performance was according to design specifications. The unit was subsequently installed in a slip stream of an Enexis gas reduction station and operated for a year without difficulty.
Lord Ronald Oxburgh (left) and CEO Bert Brouwers visiting the full scale visually accessible laboratory RPS-demister. It is operated with water and air under ambient conditions to investigate high liquid loading and separation performance under semi-turbulent conditions in the rotating element. The flow is equivalent to a natural gas flow of 100,000 Nm3hr-1 at 8 bar, 20 °C (80MMSCFD, 580 PSI, 70 °F). Performance was found to be according to expectations.
Proof of principle of the CRS process was executed at Shell Global Solutions in Amsterdam. As part of the lab-scale plant a RPS-demister was built which handles 60 Nm3hr-1 at 30 bar, -50 °C (0.05 MMSCFD, 435 PSI, -58 °F). The unit is fabricated from duplex steel and features ceramic bearings and a magnetic coupling of the drive.
Shown on scale is a design schematic of a plant based on the two-step CRS process to upgrade natural gas contaminated with 27% H2S and 14% CO2. The plant can handle 100 MMSCFD (124.000 Nm3hr-1 ) which is typical for medium sized gas fields. Compared to conventional methods of Amine scrubbing and Cryogenic Distillation the plant is 100 times smaller in volume. It can be further reduced in size by applying plate heat exchangers. CRS-based plants cost less and consume little energy despite high H
Shown is a CRS based process to separate and liquefy the greenhouse gas CO2 from flue gases. The two step CRS process is suited for flue gases with CO2 concentrations >50% encountered among others in oxy-coal power plants and several industrial processes. Compared to conventional condensation methods, installations based on CRS are small in size and cost less. They can recover up to 98% of the CO2 of the feed in the form of a liquid of purity of up to 99%, all this at lowest energy penalty.