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Liquide CondenserThe GEA liquid condenser (pre-condenser) for the PA process was invented in 1989 in co-operation of GEA with Lurgi. Since then, we have delivered in total 18 liquid condensers for PA plants worldwide. Nowadays, the liquid condenser is standard equipment in all new and modern PA plants. In the liquid condenser PA is collected in continuous operation instead of batch operation of switch condensers. Therefore, in the total PA plant only one liquid condenser is required upstream of the switch condensers. The design philosophy of the GEA liquid condenser is to ensure that the maximum amount of condensable PA is collected in liquid form. For that reason, condensation occurs at temperatures just above the triple point. In order to avoid desublimation inside the liquid condenser temperatures of cooling medium and casing have to be exactly controlled.
❚ gas flow: ❚ efficiency/capacity: ❚ oX-loading:
PA Separating SystemA liquid condenser cannot be operated alone. Moreover, liquid condenser and switch condensers build a common system. In this case the design of the switch condenser has to be adapted to the special operating conditions. For that reason, the GEA PA separating system consisting of one liquid condenser and at least three switch condensers was born. ❚ reduced energy costs ❚ higher plant safety ❚ reduced PA production costs ❚ higher flexibility with future debottlenecking ❚ stable switch condenser operation (independent of oX-loading of the air) The trends of future PA technology development will lead to oX-loading of the air higher than 100 g/Nm3. Especially in case of plant revamping, the GEA separating system can be introduced through the installation of an additional GEA liquid condenser. Existing GEA switch condensers can easily be modified to the new process requirements.
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GEA Heat Exchangers | GEA Luftkühler GmbH
Reliability
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The most important process key figures of the newest GEA liquid condensers are: