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Sulfur Recovery copy

Sulfur Recovery Unit (SRU)

Sulfur recovery is an important process for natural gas processing plants and refineries. The raw feed streams often contain gases, such as H2S and CO2. H2S is a highly toxic gas and contributes to SO2 emissions. To comply with environmental regulations, the sulfur species are converted to elemental sulfur and water via sulfur recovery technologies such as Claus Sulfur Recovery Units and Tail Gas Treatment Units (Figure1). BASF has high-quality products, proven technologies, and reliable services to meet your expectations and requirements.

Figure 1. Block flow diagram for sulfur recovery consisting of a SRU and TGTUs.

Tail Gas Treatment Units (TGTUs)

BASF offers Tail Gas Treatment Solutions to increase sulfur recovery from Claus tail gas. The solutions include catalysts and technologies that are proven for sulfur recovery to achieve the desired performance and to meet environmental requirements.

Sub-dew Point Reactor—DD-431 catalyst

Hydrogenation Reactor—CoMo catalyst

Amine Tail Gas Treating Unit—OASE® yellow, FLEXSORB, and OASE® sulfexx technologies

Figure 2. Block flow diagram for sulfur recovery consisting of a SRU and TGTUs.

OASE® is a registered trademark of BASF.

FLEXSORB is a trademark of ExxonMobil.

Sulfexx is a trademark of BASF.

Tail Gas Treatment Solutions

BASF offers Tail Gas Treatment Solutions to increase sulfur recovery from Claus tail gas. The solutions include catalysts and technologies that are proven for sulfur recovery to achieve the desired performance and to meet environmental requirements.

Sub-dew Point Reactor—DD-431 catalyst

Hydrogenation Reactor—CoMo catalyst

Amine Tail Gas Treating Unit—OASE® yellow, FLEXSORB, and OASE® sulfexx technologies

OASE® yellow Technology

  • Selective removal of H2S
  • Easy to swap from MDEA based solvent in TGTUs
  • Lower solvent circulation rates for lower energy consumption
  • Increased acid gas capacity
  • Noncorrosive and nontoxic solvents

FLEXSORB Technology

  • Highly selective removal of H2S
  • Very high CO2 rejection
  • Lower recirculation rates and lower energy consumption
  • Lower corrosion
  • Uses conventional equipment and simple to operate
  • Suitable for high ambient temperatures
  • Lower the SRU CAPEX/OPEX

OASE® sulfexx Technology

  • Ultra-selective removal of H2S as low as 10 ppmv
  • Eliminate the need for chiller unit
  • Energy savings of 15% versus FLEXSORB™ Technology
  • No equipment changes
  • Low carbon footprint

OASE® is a registered trademark of BASF.
FLEXSORB is a trademark of ExxonMobil.
Sulfexx is a trademark of BASF.