摘要:
An apparatus for separating air by cryogenic distillation comprises N air compressors (C1, C2, C3), which are connected so that they receive air at ambient pressure and which are designed to produce air at a first pressure higher than 12 bar abs, N being at least equal to 3, each of the compressors being driven by a single asynchronous motor (M1, M2, M3), the total power of the compressors being at least equal to 10 MW.
摘要:
The invention relates to equipment for separating air by cryogenic distillation, including: a double air separation column; an exchange line (91); a hot air supercharger (C1) and a cold air supercharger (C2); a first turbine (T1) and a second turbine (T2), each of which is coupled to one of the superchargers; means for bringing all the air to a high pressure that is greater than the mean pressure; means for purifying the air at said high pressure; means for dividing the purified air into two fractions and sending one fraction thereof to the hot air supercharger and one fraction to the cold air supercharger after cooling in the exchange line; means for feeding the second air fraction from the cold air supercharger back into the exchange line; means for sending at least one pressurized liquid from one of the columns into the exchange line; a valve (4, 5); means for sending the non-supercharged air, purified at a high pressure, to the exchange line, so as to be cooled therein, and then to the valve; and means for sending the air, expanded in the valve, to be distilled and/or to the atmosphere.
摘要:
Die Tieftemperatur-Luftzerlegungsanlage weist ein Destilliersäulen-System (5) mit mindestens einer Destilliersäule, einen Luftverdichter (1), einen Direktkontaktkühler (2), eine Reinigungseinrichtung (4), einen Verdunstungskühler (3) zur Erzeugung von Kaltwasser (30) für den Direktkontaktkühler (2) durch direkten Kontakt von Wasser mit einem Kühlgasstrom und eine Einsatzluftleitung (10, 11, 12) auf, welche durch den Luftverdichter (1), den Direktkontaktkühler (2) und die Reinigungseinrichtung (4) in das Destilliersäulen-System (5) führt. Beim Anfahren wird vor Inbetriebnahme des Destilliersäulen-Systems ein Luftstrom über eine Anfahrleitung (32) als Kühlgasstrom in den Verdunstungskühler (3) eingeleitet.
摘要:
Das Verfahren und die Vorrichtung dienen zur Kühlung eines Gases durch direkten Wärmeaustausch mit einer Kühlflüssigkeit. Das zu kühlende Gas (1) wird in den unteren Bereich eines Direktkontaktkühlers (2) eingeführt. Ein erster Kühlflüssigkeitsstrom (8) wird oberhalb der Stelle der Einleitung (1) des Gases in den Direktkontaktkühler (2) eingeleitet. Gekühltes Gas (5) wird oberhalb der Stelle der Einleitung (1) des Gases aus dem Direktkontaktkühler (2) entnommen. Aus dem unteren Bereich des Direktkontaktkühlers (2) wird ein flüssiger Rückstrom (10) abgezogen. Mindestens zeitweise wird ein zweiter Kühlflüssigkeitsstrom (13), dessen Temperatur niedriger als diejenige des Rückstroms (10) ist, in den flüssigen Rückstrom (10) eingeleitet und mit diesem zu einem Rücklaufstrom (11) vereinigt.
摘要:
Un procédé et un système de purification de gaz, tel l'air avant distillation cryogénique, dans lequel on contrôle, on modifie et/ou on régule au moins un paramètre d'énergie choisi parmi le débit du gaz de régénération entrant et/ou sortant d'au moins un adsorbeur, la durée de l'étape de régénération et la température de régénération du gaz de régénération entrant dans au moins un adsorbeur, en fonction d'au moins une condition opératoire choisie parmi la pression du gaz à purifier entrant et/ou sortant d'au moins un adsorbeur, le débit du gaz à purifier entrant et/ou sortant d'au moins un adsorbeur, la température (Ta) du gaz à purifier entrant dans au moins un adsorbeur et la teneur en impuretés contenues dans le gaz à purifier entrant dans au moins un adsorbeur et en fonction du profil thermique à la sortie du front de chaleur en sortie d'au moins un adsorbeur en fin de régénération.
摘要:
A pressure swing adsorber air prepurifier includes at least first and second adsorbers and a controller for controlling air feed to the adsorbers. The invention is a "realtime" method for controlling cycle times for each adsorber and includes the following steps. During a determined time period, flow is measured to an adsorber that is coupled to an air inlet. An actual totalized flow to the on-line adsorber is accumulated, based upon the measured flow values. During this time, air feed conditions are monitored and periodically, a maximum totalized flow to the adsorber is calculated, determined, at least in part, based upon the monitored air feed conditions. Periodically, the actual totalized flow value is compared to a current calculated maximum totalized flow value and upon a predetermined relationship therebetween being reached, the on-line adsorber is decoupled from the air inlet and another adsorber is coupled thereto.
摘要:
The invention relates to a cryogenic distillation apparatus for a gas mixture (), including a purification apparatus (A) for purifying a gas mixture in a system with a plurality of adsorbant bottles, a column system (MP,LP,AR), a capacity (15), means for feeding a cryogenic liquid (19,V19,29,V29) to the capacity, means for feeding a vaporised liquid (2, V2) from the capacity to a column (MO) of the system, a vaporiser (R2) in the capacity for vaporising the contained liquid; means for feeding a calorigenic gas (4) to the vaporiser, and means for drawing a liquid (3) from the capacity.
摘要:
In a method for regulating a series of apparatus for separating air by cryogenic distillation, the series comprising N air separation apparatus (1, 2, 3, 4), where N>1, an air gas having substantially the same composition is sent from the N apparatus to a consuming unit (5), each apparatus comprising a system of distillation columns (1 B, 2B, 3B, 4B) and an air purification unit (IA, 2A, 3A, 4A) of the type in which at least two adsorbers are used, each, with a phase shift, following the same cycle in which an adsorption phase, at a high cycle pressure, and a regeneration phase with depressurization, terminating in a repressurization of the adsorber, succeed one another, the method comprising a step in which the adsorbers of a unit are placed in parallel, each apparatus having an adsorption cycle time and the operation of at least some of the purification units is regulated so that the repressurization step for one apparatus begins at a different time from the beginning of the repressurization for another apparatus.