摘要:
A method of treating a gas, for example, natural gas containing at least one hydrocarbon and at least one acid gas to remove the acid gas from the natural gas and to produce at least one concentrated acid gas, wherein the gas is subjected to at least two stages of absorption using polar solvents having different properties.
摘要:
The method of the invention for liquefying a natural gas consists in liquefying at least a part of this gas by expanding it with mechanical energy, whereby during this expansion the gas changes from a dense phase to a liquid phase without undergoing a phase transition.
摘要:
A method of separating a mixture of gases by the following stages:a) absorbing a part G2 of a gas mixture G1 by a solvent L1 in an absorption zone C1;b) expanding the solvent L1, leading to partial vaporization of the absorbed gases G2 and cooling of the solvent L1;c) desorbing the gas fraction G2 in a desorption apparatus D1 having a reboiling zone B1 and an internal heat exchange zone Z1, wherein the solvent L1 from stage (b) is circulated in countercurrent contact with the vapor phase, and simultaneously has counter-current heat exchange with the solvent phase from the reboiling zone B1;d) passing the regenerated solvent leaving the reboiling zone B1 into the heat exchange zone Z1, and transferring the regenerated solvent to the top of said internal heat exchange zone; ande) recycling the regenerated solvent to the absorption zone C1.
摘要:
A description is given of a process for the fractionation of oil and gas on a petroleum deposit effluent, including:(a) a stage wherein the liquid and gaseous phases are separated at the gas evacuation pressure P1, producing a gaseous fraction G1, on the one hand, which is evacuated, and a liquid fraction L1, on the other hand, which is constituted at least partially of oil, sending the liquid fraction L1 to stage (b);(b) at least one distillation stage carried out at a pressure P2 which is less than or at least equal to the pressure P1 in stage (a), in a distillation zone C1 which has an internal heat exchange zone and a reboiling zone, and which permits a gaseous fraction G2 to be recovered, on the one hand, and a liquid fraction L2 to be recovered, on the other hand, which is sent to the internal exchange zone, then evacuated; and(c) at least one recompression stage at the pressure P1 of at least a part of the gaseous fraction G2 which is at least partly mixed with the gaseous fraction G2 and evacuated.
摘要:
The heat exchanger consisting of a stack, forms a right prism, of polygonal plates with perforations of elongate shape. The rows of perforations are stacked and each perforation of a plate communicates with two perforations of the following plate, thereby forming series of independent networks of interconnected perforations. Two systems of networks are thus provided, each of which is used to circulate a fluid. Supply and discharge means are also provided for each of the fluids.
摘要:
A process is provided for producing cold and/or heat by means of a thermal unit operating by absorption. Increased performances are obtained by using a condensable auxiliary fluid and performing the absorption in two successive steps (absorbers A.sub.20 and A.sub.21). The unit for conducting the process essentially comprises a generator (S.sub.20), a condenser (E.sub.20), an evaporator (E.sub.21) and two absorbers (A.sub.20 and A.sub.21).
摘要:
Buildings are advantageously heated or heat-conditioned with a heat pump operated with a non-azeotropic mixture consisting essentially of two working fluids, with the mixture comprising a major component of monochlorodifluoromethane (R 22) and a minor component of trifluoromethane (R 23).
摘要:
Process for producing cold and/or heat, making use of an absorption cycle and wherein carbon dioxide is the working fluid, comprising the steps of:(a) heating a solution L.sub.1 of carbon dioxide in a liquid solvent so as to obtain a carbon dioxide gaseous phase G.sub.1 and a desorbed liquid phase S.sub.1,(b) dissolving said gaseous phase in a liquid solvent S.sub.2 therefor while removing the evolved heat,(c) heating under reduced pressure the solution obtained in step b so as to desorb a carbon dioxide phase G.sub.2 therefrom and form a desorbed liquid phase S.sub.3,(d) admixing S.sub.1 and G.sub.2 at the pressure level of G.sub.2 while removing heat and increasing the pressure of the resulting solution L.sub.3 to the pressure of L.sub.1 and recycling it at least partially to step a, and(e) recycling at least a portion of S.sub.3 to step b after recompression to the pressure level of G.sub.1, in order to reconstitute S.sub.2.
摘要:
Process for producing cold by evaporation of a cooling fluid, comprising the steps of compressing a gaseous phase of the cooling fluid and dissolving it, at least partly, in a liquid solvent, precooling the resulting solution by an external fluid and further cooling it by heat exchange with a heavy and a light liquid phase, said heavy liquid phase being then recycled as liquid solvent for the gaseous phase of the cooling fluid, said light liquid phase being vaporized to produce cold, thereafter used for cooling said solution and recycled as gaseous phase of the cooling fluid.
摘要:
A system for energy storage, in particular for mechanical energy, including a system for quasi-isothermal compression of a gas via a hydraulic fluid. The mechanical energy stored is then released by quasi-isothermal expansion of the gas. The system is also configured to store electrical energy, in particular from intermittent sources such as photovoltaic or wind energy. The storage of excess electrical energy can also be considered for use during consumption peaks.