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Using amine solutions to remove acid gases
- Sour gas treatment involves using amine solutions to remove acid gases such as hydrogen sulfide (H2S) and carbon dioxide (CO2) from hydrocarbon gas in refineries and gas plants.
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Dec 2, 2016 · In general, the Sulferox process can directly treat a gas stream, or treat the H2S containing stream from an Acid Gas Removal unit, although the direct treat capability is limited to low pressure streams.
- Gas Treating and Processing
Sour gas is natural gas that contains hydrogen sulfide (H 2...
- Gas Treating and Processing
- Objectives of Gas Treating and Processing
- Typical Sales Gas Specifications
- Condensate and Oil Removal
- Acid Gas Removal
- Sour Gas Sweetening
- Sulphur Recovery
- Dehydration of Natural Gas
- Mercury Removal
- Nitrogen Removal
- Noteworthy Papers in OnePetro
Before the optimum design of any gas treating plant can be decided, at minimum, one must know: 1. the raw gas production capability to the plant 2. composition of separator inlet gas and condensate 3. relative condensate/gas rates; specifications for the residue gas; and rate of gas sales
Specifications for sales gas describe the required physical properties of the gas such that it can be transported under high pressure through long distance pipelines at ground temperature without forming liquids, which could cause corrosion, hydrates, or liquid slugs into downstream equipment. Limits on the content of certain nonhydrocarbon compoun...
It is necessary to extract related dissolved natural gas from the oil in which it is dissolved in order to treat and transport it. The most common method for separating natural gas from oil is to use equipment installed at or near the wellhead. The procedure for separating oil from natural gas, as well as the equipment employed, might differ signif...
Gas purification procedures range from a simple once-through wash operation to complicated multistep recycling systems. The necessity for recovery of the materials used to remove the pollutants, or even recovery of the contaminants in their original, or changed, form, causes process difficulties in many circumstances. Adsorption and absorption are ...
Definition of Sour Gas
Sour gas is natural gas that contains hydrogen sulfide (H2S). A natural gas is “sour” when the H2S content of the gas mixture exceeds the limit imposed by the purchaser of the gas, usually a transmission company or the end user. 1. Generally, the limit for H2S content is one grain of H2S per 100 scf of sales gas. 2. The limit for H2S content in sales gas in some areas is 1/4 grain of H2S per 100 scf of gas. 3. The mass specification of one grain per 100 scf converts a volumetric limit of 16 p...
Other Sulfur Compounds
While H2S is the compound responsible for designating a natural gas as sour, there are other sulfur compounds, also present in sour gas, in much smaller concentrations. The sales gas specifications normally set a limit of 5 grains per 100 scf of gas for total sulfur content. Thus, sweetening solvents must be able to remove other sulfur compounds, as well as H2S, from the sour gas to meet the total sulfur limitation. Some of the other common sulfur compounds found in sour natural gas are menti...
CO2 Removal
Virtually all sour natural gases also contain CO2, but the converse is not true: many natural gas mixtures can contain CO2 without any H2S. CO2 and H2S are called “acid gases,” or collectively “acid gas,” as both gases are slightly soluble in water and form a mildly acidic solution. Most regenerative processes used for H2S removal from natural gas also remove CO2. If a natural gas contains amounts of CO2 in excess of the sales gas limit, but no H2S, there are specific processes available for...
Currently only two methods are available for dealing with large quantities of H2S: • Disposal of the gas by injection into underground formations • Conversion of the H2S into a usable product, elemental sulphur
Dehydration of natural gas means extracting water vapor from the gas to a specified maximum limit for residual water content. There are various processes available for dehydration, such as: 1. absorption with glycol 2. adsorption with dry desiccant 3. absorption with a deliquescent salt 4. and refrigeration and hydrate suppression with a chemical
Mercury is found in most natural gas fields as elemental (metallic), organic, and inorganic compounds in amounts ranging from 10 ppb to >1 ppm. During the shutdown, startup, and maintenance of gas processing units with cryogenic sections, Hg can cause serious corrosion problems. The cryogenic heat exchangers are made of a mixture of mercury and alu...
Nitrogen Rejection's goal is to eliminate nitrogen from feed residue gas to provide a treated stream with low nitrogen content and a better lower heating value (LHV) specification. The nitrogen content in the feed gas stream has a big impact on the best Nitrogen Rejection procedure. There are three main methods used for nitrogen rejection: 1. Cryog...
Use this section to list papers in OnePetro that a reader who wants to learn more should definitely read
Sour gas treatment involves using amine solutions to remove acid gases such as hydrogen sulfide (H 2 S) and carbon dioxide (CO 2) from hydrocarbon gas in refineries and gas plants.
Jan 1, 2015 · Refinery gas treating is the generic term for processes used to remove the so called “acid gases,” which are hydrogen sulfide and carbon dioxide, from the refinery gas streams.
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Solution: Sulfinol-X sour gas treating process for application in lnG and natural gas production facilities. Value delivered: cost-effective and simple one-step removal of hydrogen sulphide (h2S), carbon dioxide (co 2), carbonyl sulphide (coS), mercaptans (rSh) and other organic sulphur compounds.
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Aug 24, 2023 · Starting from the huge number of novel large-scale projects for the exploitation of rich-H 2 S gas fields, this paper overviews the current tendencies in sour and ultra-sour natural gas production, focusing on the removal of sulfur-based compounds, together with H 2 S and CO 2.
Sour gas (which contains hydrocarbons, carbon dioxide, and a significant amount of hydrogen sulfide) is commonly sent to an amine gas treating unit that separates the hydrocarbon gases from the hydrogen sulfide and carbon dioxide.
