Engineering approacn optimizes process design, reduces costs for NGL facility upgrade.

摘要

In the present oil and gas market, companies may think twice before installing new equipment, even for necessary upgrades. Cost-effectiveness has become increasingly necessary. The role of the engineering contractor is critical to studying cost-reduction options during engineering design and budget allocation decisions. In every NGL facility, a product chiller package (PCP) is installed to subcool NGL to compensate for the subsequent heat gain in loading and recirculation lines. Subcooling of NGL guarantees that product temperature specifications for ship loading are met (TABLES 1 and 2). The loading system comprises storage tanks, booster and loading pumps, loading and recirculation chiller packages, a loading pipeline, a recirculation pipeline and offshore loading arms. To keep the NGL product subcooled and ready for ship loading, it is continuously recirculated from the loading area back to the storage facility, with recirculation chiller packages installed upstream of the storage tank (FIG. 1).