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 processesThe 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.