2020 REFINING PROCESSES HANDBOOK PROCESS CATEGORIES COMPANY INDEX DISTILLATION GT-LPG MAX® Fuel gas (C1, C2) Application: GT-LPG MAX® provides a cost-effective solution for recovering LPG product using a novel process concept of absorption plus distillation within the same fractionating vessel. The technology is well suited for low-pressure refinery offgas as well as associated natural gas streams. Heavy oil Description: Refinery offgas is a mixture of hydrogen and hydrocarbons from various units within the refinery, pooled together to be used as a fuel for heating purposes. The fuel gas contains valuable components, such as propane, that can provide additional revenue to the refinery. The GT-LPG MAX® technology is based on avoiding thermodynamic inefficiencies in conventional absorption and distillation columns by incorporating the unit operations in a single-top dividing wall column (GT-TDWC®). The feed side of the top DWC recovers the C3+ components from the fuel gas through absorption. The other side of the DWC uses distillation to split between C3 and C4 components to produce LPG product. The figure shown here is for an option where a portion of the bottom product that consists in high-boiling components is recirculated back to the feed side of the column to be used as absorption medium. Advantages: * 99% propane recovery without the use of external refrigeration * Lower operating pressure (200 psig-250 psig) * Lower CAPEX and OPEX LPG (C3 ) Feed Internal circulation of heavies as absorption solvent C4, heavies Licensor: Sulzer GTC Technology US Inc. Website: www.gtctech.com; www.sulzer.com Contact: inquiry@gtctech.com Copyright © 2020 Gulf Energy Information. All rights reserved.http://www.hydrocarbonprocessing.com/ http://www.gtctech.com http://www.sulzer.com