Abstract:
The present invention is directed to a process for the removal of hydrogen sulfide and sulfur recovery from a H2S-containing gas stream by catalytic direct oxidation and Claus reaction through two or more serially connected catalytic reactors, wherein a specific control of the oxygen supplement is operated. The control and improvement of the process is obtained by complementing, in each major step of the process, the H2S-containing gas stream by a suitable flow of oxygen, namely before the H2S-containing gas stream enters the Claus furnace, in the first reactor of the process and in the last reactor of the process. Especially in application in a SubDewPoint sulfur recovery process the H2S/SO2 ratio is kept constant also during switch-over of the reactors R1 and R by adding the last auxiliary oxygen containing gas directly upstream the last reactor R so that the H2S/SO2 ratio can follow the signal of the ADA within a few seconds.
Abstract translation:本发明涉及通过催化直接氧化和克劳斯反应通过两个或更多个串联连接的催化反应器从含H 2 S的气体物流中除去硫化氢和硫的方法,其中氧气补充物的特定控制是 操作。 该工艺的控制和改进是通过在工艺的每个主要步骤中通过合适的氧流来补充含H 2 S的气流,即在含H 2 S的气流进入克劳斯炉之前,在 该过程的第一个反应器和过程的最后一个反应器。 特别是在SubDewPoint硫回收过程中,通过在最后一个反应器R上游直接添加最后一个辅助含氧气体,在反应器R1和R的转换过程中H 2S / SO 2比例保持恒定,从而H 2S / SO 2比率可以在几秒钟内跟踪ADA的信号。
Abstract:
L'invention concerne un procédé flexible pour la purification d'un solvant inhibiteur de la formation d'hydrates lors du traitement de gaz , en particulier de monoéthylène glycol (MEG), ledit solvant ayant un point d'ébullition supérieur à celui de l'eau et étant ,à un moment au moins, en mélange avec de l'eau et des sels , le procédé opérant différemment avec la même installation selon la teneur en sels du MEG à traiter. Le procédé opère selon une phase dite de reclaiming (séparation des sels sous vide suivie de distillation sous vide) lorsque la teneur en sels dépasse le seuil de précipitation et sinon le procédé opère en phase de régénération (absence de séparation de sels et pas de fonctionnement sous vide). Avantageusement, le basculement a lieu sous asservissement à un moyen de dosage des sels.
Abstract:
The present invention relates to a gas-redirecting device (100) presenting an upper plane and a plurality of gas-redirecting tubes (3) comprising an inlet end and an outlet end. For each gas-redirecting tube, the orthogonal projections of the inlet end and the outlet end onto the upper plane have an over-lapping area of at most 50 % of the total area of the upper plane covered by the orthogonal projections. The present invention also relates to a liquid-gas contacting column (201) comprising such a gas-redirecting device (100), a floating support comprising such a liquid-gas contacting column, at least two packed beds (210, 220) and a method for improving the efficiency of a liquid-gas contacting column which is based on redirecting the gas from a wetted zone of a lower packed bed to a wetted zone of the higher packed bed, the liquid load through the wetted zone of the lower packed bed is different from the liquid load through the wetted zone of the higher packed bed.
Abstract:
Procédé de régénération d'une solution de glycol contenant de l'eau, des hydrocarbures et des sels. La solution de glycol est détendue dans le ballon (2), puis est distillée dans la colonne (7). Le glycol concentré récupéré au niveau du rebouilleur (8) est mis sous vide pour vaporiser l'eau et pour faire précipiter les sels. Les sels sont séparés du glycol dans le dispositif de séparation (13). Le glycol concentré et débarrassé des sels est stocké dans la capacité (16).
Abstract:
The invention concerns a method for dehydrating a gas contained in water using a hydrophilic liquid dessicant, with regeneration of said liquid dessicant, characterised in that it comprises: (a) a step for absorbing water by contact between said wet gas and a regenerated liquid dessicant derived from step (c), producing a dry gaseous effluent and a liquid dessicant flux loaded with absorbed water and gas; (b) a step for regenerating said water-loaded liquid dessicant in a regeneration zone comprising a re-boiling zone and a distillation zone, the loaded liquid dessicant being sent in said distillation zone, wherefrom comes out, at the top, vapour containing water and from the base in the re-boiling zone, the liquid dessicant still containing water; and (c) a step wherein said liquid dessicant derived from the re-boiling zone of step (b) and still containing water is sent to an absorption zone, wherein the water and the vapour generated by said dessicant is absorbed by a fraction of regenerated or non-regenerated dessicant, taken at one point of the process, and sending said dessicant which has absorbed the water of said vapour towards the re-boiling zone of step (b) and sending the regenerated dessicant to the absorption zone of step (a).
Abstract:
The invention concerns a method for dehydrating a gas contained in water using a hydrophilic liquid dessicant, with regeneration of said liquid dessicant, characterised in that it comprises: (a) a step for absorbing water by contact between said wet gas and a regenerated liquid dessicant derived from step (c), producing a dry gaseous effluent and a liquid dessicant flux loaded with absorbed water and gas; (b) a step for regenerating said water-loaded liquid dessicant in a regeneration zone comprising a re-boiling zone and a distillation zone, the loaded liquid dessicant being sent in said distillation zone, wherefrom comes out, at the top, vapour containing water and from the base in the re-boiling zone, the liquid dessicant still containing water; and (c) a step wherein said liquid dessicant derived from the re-boiling zone of step (b) and still containing water is sent to an absorption zone, wherein the water and the vapour generated by said dessicant is absorbed by a fraction of regenerated or non-regenerated dessicant, taken at one point of the process, and sending said dessicant which has absorbed the water of said vapour towards the re-boiling zone of step (b) and sending the regenerated dessicant to the absorption zone of step (a).