EnerProcess' engineering team has extensive process design and modular engineering experience, building and delivering oil & gas processing and treating facilities. We excel in both pre engineered and custom designed solutions using open art technology and proprietary designs. When combined with EnerProcess’s broad family of midstream products and in house engineering services, you can count on us to deliver a profitable project time after time.

Natural gases are mixtures of saturated hydrocarbons with different boiling points. The composition ranges from methane as the main component up to pentanes. In addition, natural gases often contain higher unsaturated hydrocarbon compounds with a highly complex phase behaviour. To avoid an explicit definition of these compounds, they are generically summed up under the term C6+. Beside these hydrocarbon compounds, nitrogen and carbon dioxide are typical impurities. Hydrogen sulphide and carbonyl sulphide as well as mercaptans are further components that are frequently found in different concentrations. Natural gases containing hydrogen sulphide are generally called sour gases, gases without this component are defined as sweet gases. In addition, natural gas resources that contain mercury in varying concentrations exist worldwide. In the reservoir, natural gas is found with chloride-containing water, the so-called reservoir water. Therefore, when natural gas is extracted, it is saturated with water corresponding to the partial pressure.

Conditioning processes

The adjustment of natural gas compositions, which widely vary, primarily three industrial processes have proven themselves:
  • The absorption process with triethylene glycol as a drying agent for the adjustment of the H2O-dew point.
  • The adsorption process, for the simultaneous adjustment of the H2O- and the hydrocarbons-dew point. Zeolites (molecular sieves) or silica gel are used as basis for the adsorbent.
  • The condensation process is the process that competes with the adsorption process. In the LTS- (low temperature separation) or the CFP-design (cold fractionation plant), mercury is simultaneously extracted.
gas conditioning & treating


OUR SERVICE PORTFOLIO

Gas Sweetening And Amine Units

Gas Sweetening And Amine Units

EnerProcess' Amine Systems efficiently sweeten gas by removing hydrogen sulfide, and/or carbon dioxide. Using proven amine technology and fulfilling the requirements of our clients, EnerProcess Gas Sweetening is a reliable and cost-effective solution that increases the value of gas resources. Amine Plants are used to remove contaminants such as carbon dioxide (CO2) and hydrogen sulfide (H2S) from natural gas streams. These contaminants are often referred to as “acid gas” components. Various amine products can be utilized to meet the product specifications required for a specific application, but all amines work on the same general principle of forming a chemical bond between the amine and the acid gases, thus removing these contaminants from the natural gas stream. The contaminant rich amine (“rich amine”) exits the natural gas treating section and is routed to the Amine Regeneration system, where the amine is stripped of the contaminants, by using heat and mass transfer to break the chemical bonds that were previously formed between the amine and the acid gases. The acid gases are then routed to disposal (Flare or Thermal Oxidizer), while the regenerated amine (“lean amine”) is recirculated back to the gas treating section to remove more acid gases from the inlet natural gas stream.
TEG Gas Dehydration & Regeneration Units

TEG Gas Dehydration & Regeneration Units

EnerProcess standard TEG dehydration units lower the water dew point, allowing the water vapor to condense to a liquid at a lower temperature. In turn, the units depress the hydrate formation point of the gas through water removal.

Water vapor present in natural gas streams has many adverse effects including slug formation, hydrate formation and corrosion in pipelines and downstream equipment. Triethylene glycol dehydration (TEG) units are the glycol dehydration system most commonly employed to remove water, which, at low temperatures, can freeze in piping or form hydrates with CO2 and hydrocarbons. Depending on the composition, these hydrates can form at relatively high temperatures plugging equipment and piping.

Common practice is to use our standard TEG dehydration units downstream from an amine plant, storage, compression and/or gas processing facilities. Our TEG dehydration units are designed skid-mounted for simple installation and mobility purposes.

  • Most commonly used process for removing water vapor from natural gas streams
  • Dehydrates natural gas stream to comply with pipeline specifications
  • TPrevents hydrate formation and corrosion complications
  • High efficiency design for optimal stripping gas usage
  • TFlexible design for various heat medium sources
  • Skid-mounted for simple installation and mobility
Mol Sieve Dehydration Units

Mol Sieve Dehydration Units

EnerProcess Molsieve Dehydration Technology achieves very low dew points for natural gas, associated gas and CO2. Molecular Sieve Dehydration Units work on the principle of adsorption. Molecular Sieve Dehydration units typically have higher initial capital investments than comparable glycol units but also are able to achieve very low dew points which are required for cryogenic plants.

Molecular Sieve Dehydration Units work on the principle of adsorption. Molecular Sieve Dehydration units typically have higher initial capital investments than comparable glycol units but also are able to achieve very low dew points which are required for cryogenic plants. Additionally, Molecular Sieve Units can also handle large flow variations as well as higher inlet gas temperatures.

Process Description

Typically Molecular Sieve Units consist of the following equipment:
  • Inlet Filter Separators
  • Adsorption Towers (Usually a minimum of two are used: one adsorbing and one regenerating)
  • Regeneration Gas Heater
  • Regeneration Gas Cooler
  • Regeneration Gas Cooler and Separator
  • Lots of Piping, Switching Valves and instrumentation

Sulphur Recovery Units

Sulphur Recovery Units

EnerProcess' engineering team has extensive process design and modular engineering experience, building and delivering oil & gas processing and treating facilities. We excel in both pre engineered and custom designed solutions using open art technology and proprietary designs. When combined with EnerProcess’s broad family of midstream products and in house engineering services, you can count on us to deliver a profitable project time after time.

Sulfur Recovery Units typically utilize CLAUS technology to recover sulfur in off-gases from refineries, gas plants, coal gasification or other processes. CLAUS units can be stand-alone, or followed by other sulfur recovery technologies, termed Tail Gas Treaters. The SRU Tail Gas is most often incinerated, converting H2S to SO2, sent through a waste heat boiler and out to the stack.

Challenges in the SRU Tail Gas Clean Up application are:

  • Potentially very high inlet SO2
  • Variable gas flow and inlet SO2 concentrations due to the need to bypass processes downstream
  • High inlet temperatures if a waste heat boiler is not required.
  • Regulators sometimes require system redundancy