PNBV, a subsidiary of Brazil-based oil and gas explorer Petrobras, has selected Honeywell company UOP’s Separex process technology to clean natural gas aboard four new floating production, storage and offloading (FPSO) vessels.

The FPSO vessels will process natural gas extracted from Petrobras’ Lula pre-salt oil reserves, offshore Brazil.

Honeywell said that UOP’s Separex technology upgrades natural gas streams by removing contaminants like carbon dioxide and water vapour to meet quality standards.

The compact and solvent-free Separex membrane systems will be installed aboard the four FPSOs to remove carbon dioxide and water from 7 million standard cubic meters of natural gas per day.

UOP gas processing and hydrogen business unit senior vice president and general manager Rebecca Liebert said, "The high levels of carbon dioxide, space limitations, and extreme environmental conditions make natural gas clean-up in the Brazilian pre-salt fields a challenge, but UOP Separex technology was designed to excel under these circumstances."