
露点压力
While below the dew point pressure, the gas-liquid mixed adsorption model is adopted if the retrograde condensate oil saturation higher than the critical flow saturation of condensate oil;
当压力低于露点压力时,若反凝析油饱和度小于凝析油的临界流动饱和度,采用气液混合吸附模型来进行计算;
When the pressure is higher than the dew point, the system of condensate gas is gas phase, so the theory model of cavern solution should be use to compute gas adsorption.
当体系压力在露点压力以上时,凝析气体系为气态,应采用空穴溶液理论模型计算气体吸附。
Gas injection may make dew point of condensate gas increase. The long-core experiments show that the higher the pressure upkeep is, the higher condensate oil recovery is.
注气可使凝析气露点有所升高,长岩心实验表明保持压力越高凝析油采收率越高。
The principle of production of low-dew-point nitrogen by pressure swing adsorption(PSA) was described, and the application in the manufacture of silicone rubber was introduced.
介绍了变压吸附法制低露点氮气的基本原理及在热硫化硅橡胶生胶生产中的应用。
A cladding which is to a large extent resistant to dew-point corrosion is also envisaged for the lower area of the gasifier (REACTOR) pressure vessel in the zone affected by the Slag Bath.
基本针对露点腐蚀的复合层还面临着气化炉(反应器)受渣池影响的较低区域。
露点压力(dew point pressure)是热力学和油气工程领域的重要概念,指在恒定温度下,气体混合物中某一组分开始从气相冷凝为液相时的临界压力值。该参数广泛应用于天然气处理、凝析气藏开发及工业流程设计。
在单一组分系统中,露点压力等同于该物质的饱和蒸气压。对于多组分混合物(如含烃类气体),露点压力需要通过相平衡方程计算。以天然气为例,当系统压力降低至露点压力以下时,重组分烃类(如戊烷、己烷)会率先凝结形成液滴。
行业标准GB/T 26981-2011《凝析气藏流体物性分析方法》规定了露点压力的实验室测定流程,采用恒质膨胀实验结合激光检测技术。工程计算常用Peng-Robinson状态方程,其基本形式为: $$ P = frac{RT}{v-b} - frac{aα}{v(v+b)+b(v-b)} $$ 其中$a$、$b$为组分特征参数,$α$与温度相关。
dew point pressure(露点压力) 是工程和物理化学中的专业术语,具体含义如下:
在恒定温度下,气体混合物开始从气相凝结出第一滴液滴时的压力。例如,在油气藏开发中,当天然气压力降低至露点压力时,会析出液态烃(凝析油)。
在相态图中,露点压力与泡点压力(bubble point pressure)对应,前者是气相开始凝结液体的临界压力,后者是液相开始析出气体的临界压力。
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