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Category: Gas Sweetening Processes

Gas Sweetening Processes

Gas Permeation

Posted on September 19, 2009

Gas permeation is based on the mass transfer principles of gas diffusion through a permeable membrane. In its most basic form, a membrane separation system…

Gas Sweetening Processes

Distillation

Posted on September 19, 2009

The Ryan-Holmes distillation process uses cryogenic distillation to remove acid gases from a gas stream. This process is applied to remove CO2 for LPG separation…

Gas Sweetening Processes

Sulfide Scavengers

Posted on September 19, 2009

Sour gas sweetening may also be carried out continuously in the flowline by continuous injection of H^S scavengers, such as amine-aldehyde condensates. Contact time between…

Direct Conversion of H2S to Sulfur

Sulfa-Check

Posted on September 19, 2009

Sulfa-Check® process uses sodium nitrite (NaNO2) in aqueous solution to oxidize H2S to sulfur. This process was developed and patented by NL Treating Chemicals and…

Direct Conversion of H2S to Sulfur

IFP Process

Posted on September 19, 2009

The Institute Francais du Petrole has developed a process for reacting H2S with SO2 to produce water and sulfur. The overall reaction is 2H2S +…

Direct Conversion of H2S to Sulfur

Stretford Process

Posted on September 19, 2009

An example of a process using O2 to oxidize H2S is the Stretford® process, which is licensed by the British Gas Corporation. In this process…

Direct Conversion of H2S to Sulfur

LOCAT Process

Posted on September 19, 2009

The LOCAT® process is a liquid phase oxidation process based on a dilute solution of a proprietary, organically chelated iron in water that converts the…

Direct Conversion of H2S to Sulfur

Claus Process

Posted on September 19, 2009

This process is used to treat gas streams containing high concentrations  of H2S. The chemistry of the units involves partial oxidation of  hydrogen sulfide to…

Direct Conversion of H2S to Sulfur

Direct Conversion of H2S to Sulfur

Posted on September 19, 2009

The chemical and solvent processes previously discussed remove acid gases from the gas stream but result in a release of H2S and CO2 when the…

Physical Solvent Processes

Rectisol Process

Posted on September 18, 2009

The German Lurgi Company and Linde A. G. developed the Rectisol® process to use methanol to sweeten natural gas. Due to the high vapor pressure…

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