A cleaner and more sustainable decarbonation process via ionic-liquid absorption for natural gas with high carbon dioxide content

Characteristics of the large-scale circulation during episodes with high and low concentrations of carbon dioxide and air pollutants at an arctic monitoring site in winter

Supersonic separator for cleaner offshore processing of natural gas with high carbon dioxide content: Environmental and economic assessments

Supersonic separator for cleaner offshore processing of supercritical fluid with ultra-high carbon dioxide content: Economic and environmental evaluation

ASSIMILATION AND RESPIRATION OF EXCISED LEAVES AT HIGH CONCENTRATIONS OF CARBON DIOXIDE

Upgrading of natural gas ultra-rich in carbon dioxide: Optimal arrangement of membrane skids and polishing with chemical absorption

Techno-economic evaluation of CO2-rich natural gas dry reforming for linear alpha olefins production

Natural gas dehydration by molecular sieve in offshore plants: Impact of increasing carbon dioxide content

Orders & Contracts

Low-emission offshore Gas-To-Wire from natural gas with carbon dioxide: Supersonic separator conditioning and post-combustion decarbonation

Permeation properties were analyzed for a mixture of CO2, O2, and N2 in a medium-size polysulfone hollow fiber permeator with a net permeation area of 4.22 m2. Measurements were conducted as a function of feed composition, reject flow rate, and feed pressure. Results included variations in species permeability, separation factor, permeate enrichment, reject depletion, and stage cut as a function of system parameters. Variations in permeation properties show strong dependence on feed composition, reject flow rate, and feed pressure. Permeability of carbon dioxide was higher at larger feed pressures and higher carbon dioxide content in the feed stream. Effect of increasing the reject flow rates on the permeability of carbon dioxide was affected by the system pressure and the carbon dioxide content in the feed stream. At low pressures, increase of the reject flow rate resulted in a decrease of carbon dioxide permeability. The opposite behavior was obtained at higher feed pressures. Increase of the reject flow rate reduced the gas residence time within the permeator. Increase of reject flow rate reduced species residence within the permeator and in turn increased resistance to species transport within the permeator. However, higher system pressures and carbon dioxide content in the feed stream resulted in larger levels of membrane plasticization, which increased the permeation rates of all species. The combined efféct of reducing the species residence time within the permeator and the level of membrane plasticization favored the permeation of carbon dioxide versus the other two species. Variations in other permeation properties, which include oxygen and nitrogen permeabilities, stage cut, permeate enrichment in carbon dioxide, and reject depletion in carbon dioxide, were also explained in terms of resistances encountered within the permeator and the membrane.

Petroleum and natural gases besides hydrocarbons may contain acidic gases - carbon dioxide (CO2) and hydrogen sulfide (H2S), and organosulfur compounds - carbonyl sulfide (COS), gray-carbon (CS2), mercaptans (RSH), thiophenes and other components which complicate the transport and use of gases. In the presence of carbon dioxide, hydrogen sulfide and mercaptans natural occurrence of metal corrosion. Hydrogen sulphide, mercaptans, carbonyl sulfide - a highly toxic substance. High concentrations of carbon dioxide in the gases is undesirable and sometimes unacceptable, and also because, in this case reduced calorific value gaseous fuel. If we look at this issue with these products, the sulfur compounds can be classified as undesirable substances. The technological process of processing of natural gas necessary to provide natural gas purification from acidic components. The article explores the process of purification of natural gas solutions of alkanolamines. The problem of increasing the flow of steam in the process of regeneration of the rich absorbent. One problem that arises during purification of natural gas is the increased consumption of thermal energy. It is well known that heat energy is purchased and it allocated substantial funds. The task of solving this problem may be the use of energy-saving technology, leading to a reduction in wasteful heat loss. To achieve this goal in the work the advanced technology amine purification of natural gas from the acid components with varying degrees of regeneration solution. Upgraded scheme allows to obtain the finished product that meets all quality standards.

Comparative analysis of separation technologies for processing carbon dioxide rich natural gas in ultra-deepwater oil fields

Welfare implications of gas stunning pigs: 3. the time toloss of somatosensory evoked potential and spontaneous electrocorticogram of pigs during exposure to gases

Process analysis of a low emissions hydrogen and steam generation technology for oil sands operations

In this paper, the origin of carbon dioxide and nitrogen in natural gases produced from the Erawan gas field is discussed on the basis of carbon isotopic data and several geological evidences. Maximum contents of carbon dioxide and nitrogen in natural gases recovered from three wells at the northwestern flank of this field, are 59.72% and 21.38%, respectively.As a result of carbon isotopic studies of methane, ethane and carbon dioxide in 11 gas samples of those wells, natural gases are divided into two groups, such as group A and group B.The group A is characterized by heavy methane (-30 to 33‰ PDB) on carbon isotopic compositon, and by high contents of carbon dioxide and nitrogen. Gases of this group are a mixture of magmatic gases and organic-origin gases. The magmatic gases consisting of mainly carbon dioxide, nitrogen and heavy methane have migrated into the present reservoirs from the pre-Tertiary basement through the east-dipping faults cutting the basement.The group B is characterized by normal contents of carbon dioxide and nitrogen, and by lighter methane (-38 to -41‰ PDB) on carbon isotopic composition. Gases of this group have been generated from the organic matters in the Tertiary sediments by thermal maturation.