Пинч-интеграция теплового насоса в процесс разделения легких углеводородов

Abstract

Energy conservation is one of the most common concerns in gas separation plants. This article contains information about data extraction and heat integration of separation of light hydrocarbons plant. The pinch analysis method was selected to perform a reconstruction project. Technological streams that are needed for the integration process by using the pinch analysis method were identified. Grid diagram was constructed on the basis of these data, heat exchange between process streams was determined. Heat recovery power of existing process was calculated. In addition to that composite curves for the existing process was made. According to principles of pinch analysis, new composite curves are designed. Application of the methods of pinch-analysis and integration of heat pumps allows to decrease the external hot utilities usage by 27 % and cold utilities usage by 27 %, and also offered the way of step-by-step retrofit of the plant.