摘要:
The invention relates to a safety device constituting a valve for releasing pressurized gas in the event of a dangerous situation, including a body defining a gas flow channel extending in a longitudinal direction between a first upstream end to be brought into contact with a pressurized gas source (G) and a second downstream end to be brought into contact with the outer atmosphere, wherein the device includes a plug located in the channel for preventing the flow of gas between the upstream end and the downstream end in a normal situation, the plug being shaped so as to release the passage for the gas in the event of a dangerous situation in which it is subjected to a pressure and/or a temperature exceeding a predetermined threshold, characterized in that, from the upstream direction toward downstream direction, the channel includes two upstream and downstream adjacent flow portions, respectively, having different respective transverse dimensions (d, D), the ratio D/d between the transverse dimension D of the downstream portion and the transverse dimension d of the upstream portion being between 1.4 and 11, and in that the junction between the two adjacent portions forms a discontinuity in the transverse dimension of the channel, and in that the ratio L/D between the length L of the downstream portion and the transverse dimension D of said downstream portion is between 15 and 100.
摘要翻译:本发明涉及一种构成用于在危险情况下释放加压气体的阀的安全装置,该安全装置包括限定在纵向方向上延伸的气体流道的主体,该第一上游端与加压气体源 (G)和与外部大气接触的第二下游端,其中所述装置包括位于所述通道中的塞子,用于在正常情况下防止上游端和下游端之间的气体流动,所述塞子 形成为在经受超过预定阈值的压力和/或温度的危险情况下释放气体通道,其特征在于,从上游方向向下游方向,通道包括 分别具有不同的相应横向尺寸(d,D)的两个上游和下游相邻流动部分,反之间的比D / d 下游部分的尺寸D和上游部分的横向尺寸d在1.4和11之间,并且两个相邻部分之间的接合部在通道的横向尺寸上形成不连续性,并且其中L / 下游部分的长度L和所述下游部分的横向尺寸D之间的距离D在15和100之间。
摘要:
The invention relates to a method for purifying a specific gas stream containing one or more components to be recovered, one or more impurities to be eliminated and one or more poisons, for a unit for separation by means of permeation, including the following steps: a) in a unit for separation by means of absorption, separate from said unit for separation by means of permeation, the specific gas stream is placed in contact with one or more liquid solvents suitable and intended for selectively absorbing said poisons in order to obtain at least one first gas stream depleted of said poisons and a second liquid stream; and b) said first gas stream produced in step a) is separated in said unit for separation by means of permeation, at a specific absolute pressure P, into at least one third gas stream depleted of impurities and a fourth stream; the separation performed in step a) being carried out at an absolute pressure of between 50% and 200% of said specific absolute pressure P.
摘要:
The invention relates to a method for producing a flow containing at least one alkene derivative, including the following steps: a step a) of reacting a flow containing one or more alkenes and one or more alkanes—the ratio of said alkanes to said alkenes being at least 1 by volume—with a flow containing mainly oxygen, in order to obtain at least one converted flow containing at least said alkene derivative; a step b) of separating the converted flow produced in step a) into at least said flow containing at least said alkene derivative and a residual flow containing mainly one or more hydrocarbons and one or more inert compounds; and a step c) of separating all or a portion of said residual flow by means of permeation into at least one first flow containing mainly one or more inert compounds and a second flow containing mainly one or more hydrocarbons.
摘要:
The invention concerns a method for producing a hydrogen-enriched gas stream from at least one gas stream comprising for the major part hydrogen and a gas stream comprising hydrogen and hydrocarbons, using a pressure-modulated gas adsorption unit, the temperature of the gas stream comprising hydrogen and hydrocarbons being first lowered so as to condense the hydrocarbons.