摘要:
A request to initiate startup of an air separation plant (200) may be received (610), and, in response to receiving the request, startup information that identifies a sequence of steps to be automatically executed to start up the air separation plant (200) is retrieved (620). Each step may be associated with a component of the air separation plant (200), and may be associated with an action and a set of permissives corresponding to the action. The set of permissives for each action may specify one or more parameters for controlling the execution of the corresponding action. After retrieving the startup information (620), the system may automatically initiate execution of the sequence of steps (630), and may monitor the execution of each of the steps (640). The system may determine (660), based on the monitoring, whether to modify a parameter specified by one of the permissives corresponding to an executed action.
摘要:
In a method for separating air by separation at sub-ambient temperature, a first heat pump (31), using the magnetocaloric effect, exchanges heat between a cold source at sub-ambient temperature and a hot source at sub-ambient temperature, thus contributing at least a portion of the separation energy, and a second heat pump (21), using the magnetocaloric effect, exchanges heat between a cold source (15) at sub-ambient temperature and a hot source at ambient temperature, thus contributing at least a portion of the cold required to maintain the cold balance of the method, the separation taking place in a single column (19) at a pressure of less than 2 bar.
摘要:
An argon purification system is provided which includes a cryogenic heat exchanger, a cryogenic distillation column. The cryogenic heat exchanger is configured to remove heat from a pre-treated argon waste stream to create a cold feed stream. The cryogenic distillation column includes packing, a reboiler, and an overhead condenser, as well as an upper portion and a lower portion and is configured to receive a liquid feed stream and to produce a bottoms argon product stream and a gas waste stream. The reboiler is positioned in the lower portion of the cryogenic distillation column and is configured to condense the cold feed stream to produce the liquid feed stream. The condenser is positioned in the upper portion of the cryogenic distillation column and is configured to heat the bottoms argon product stream such that the bottoms argon product stream evaporates to a purified vapor phase argon stream.
摘要:
Un appareil de séparation d'un mélange gazeux contenant au moins 35% mol. de dioxyde de carbone, ainsi qu'au moins un gaz plus léger que le dioxyde de carbone comprenant un premier séparateur de phases (15), une conduite pour envoyer le premier débit partiellement condensé est envoyé de la ligne d'échange au premier séparateur de phase, un moyen de refroidissement (23), une conduite pour envoyer un gaz du premier séparateur de phase, contenant moins de dioxyde de carbone que le mélange gazeux, se refroidir par le moyen de refroidissement, pour former un deuxième débit partiellement condensé, un deuxième séparateur de phases (27), une conduite pour envoyer le deuxième débit partiellement condensé à un deuxième séparateur de phases, une première vanne (21), une conduite pour envoyer un liquide soutiré du premier séparateur de phases, contenant plus de dioxyde de carbone que le mélangé gazeux, se détendre dans la première vanne pour baisser sa pression d'au plus 300mbar et pour former un premier liquide détendu et des moyens de mélange pour mélanger le premier liquide détendu avec un deuxième liquide provenant du deuxième séparateur de phases en amont d'une troisième vanne.
摘要:
Es wird ein Verfahren zum Abtrennen schwerer Kohlenwasserstoffe, insbesondere von C 6+ - Kohlenwasserstoffen und/oder aromatischen Kohlenwasserstoffen, wie Benzol, aus einer zu verflüssigenden Kohlenwasserstoff-reichen Fraktion, insbesondere aus Erdgas, beschrieben, wobei die Kohlenwasserstoff-reiche Fraktion (1) vor der Abtrennung (T1) der schweren Kohlenwasserstoffe (7) vorgekühlt wird (E1). Erfindungsgemäß wird bzw. werden der Kohlenwasserstoff-reichen Fraktion (1) vor ihrer Vorkühlung (E1) und/oder der für die Abtrennung (T1) der schweren Kohlenwasserstoffe (7) dienenden Abtrennkolonne (T1) (eine) C 5 -Kohlenwasserstoff-reiche Fraktion(en) (14, 15) zumindest in einer Menge zugemischt, vorzugsweise in flüssiger Form, dass ein Ausfrieren der abzutrennenden schweren Kohlenwasserstoffe (7) vermieden wird.
摘要:
Dans un procédé de séparation d'au moins une impureté plus légère d'un mélange gazeux contenant au moins 30% mol de dioxyde de carbone, un liquide (101) enrichi en dioxyde de carbone est soutiré encuve d'unecolonne de distillation ((25), au moins une partie (27) du liquide enrichi en dioxyde de carbone est vaporisée et puis chauffée à une première température supérieure à sa température d'ébullition dans l'échangeur et sort de l'échangeur au bout chaud de celui-ci etau moins une partie du liquide vaporisé et chauffé est envoyé du bout chaud de l'échangeur à la première température, sans être refroidi dans l'échangeur et sans avoir été comprimé, jusqu'à la partie inférieure de la colonne de distillation, où elle participe à la distillation en s'enrichissant.
摘要:
Disclosed is a method for separating an N2-rich fraction from a liquefied hydrocarbon-rich fraction, particularly liquefied natural gas. In said method, the liquefied hydrocarbon-rich fraction is fed to a stripping column, which is used for separating the N2-rich fraction, after being liquefied and being supercooled. According to the invention, a first partial flow of the liquefied hydrocarbon-rich fraction (2, 2') is fed to the stripping column (S) as reflux while a second partial flow of the liquefied hydrocarbon-rich fraction (3, 3') is fed to the bottom of the stripping column (S). The second partial flow of the liquefied hydrocarbon-rich fraction (3, 3') has a higher temperature than the first partial flow of the liquefied hydrocarbon-rich fraction (2, 2').
摘要:
A method and apparatus of removing heavy hydrocarbons from a natural gas feed stream, the method comprising using first and second hydrocarbon removal systems in series such that the first system processes the natural gas feed stream to produce a heavy hydrocarbon depleted natural gas stream and the second system processes at least a portion of the heavy hydrocarbon depleted natural gas stream from the first system to produce a natural gas stream lean in heavy hydrocarbons, wherein one of said systems is a adsorption system that comprises one or more beds of adsorbent for adsorbing and thereby removing heavy hydrocarbons from a heavy hydrocarbon containing natural gas, and the other of said systems is a gas-liquid separation system for separating a heavy hydrocarbon containing natural gas into a heavy hydrocarbon depleted natural gas vapor and a heavy hydrocarbon enriched liquid.
摘要:
Nitrogen is removed from a cryogenic hydrocarbon composition. A least a first portion of the cryogenic hydrocarbon composition is fed to a nitrogen stripper column. The nitrogen stripper column operates at a stripping pressure. A stripping vapour is passed into the nitrogen stripper column, comprising at least a stripping portion of a compressed process vapour that has been produced from the nitrogen-stripped liquid which has been depressurized after drawing it from the nitrogen stripper column. Reflux is generated involving partially condensing overhead vapour of the nitrogen stripper column by passing heat from the overhead vapour to an auxiliary refrigerant stream at a cooling duty. An off gas consisting of a, non-condensed, vapour fraction from the overhead vapour is discharged. The cooling duty is adjusted to regulate a heating value of the vapour fraction being discharged.