凝析油处理系统能量利用方案优化研究

Optimization of energy utilization scheme for condensate treatment system

关键词:  凝析油  综合能耗  换热效率  进料位置  HYSYS模拟  燃料气成本

Key words:  condensate  comprehensive energy consumption  heat exchange efficiency  feed position  HYSYS simulation  fuel gas cost

摘要:

为了充分利用压力能,国内凝析油处理系统普遍采用多级降压闪蒸+提馏的稳定工艺,凝析油稳定会耗费大量热源,且凝析油处理系统换热形式均较为简单,换热网络不够优化,导致较多的余热资源被浪费。为了节能降耗,实现经济、绿色生产的目的,有必要对凝析油处理系统能耗进行优化,提出改造方案。以YM凝析油处理系统为例,通过对凝析油处理系统的能量利用方案进行优化研究,采用顺序换热和宽通道换热器优化后,凝析油处理系统换热效率提升较大,每年可节省燃料气成本95.4万元,1年即可收回改造成本,提高了天然气处理厂的经济效益,降低了单位产品的综合能耗。

Abstract:

In order to make full use of the pressure energy, the domestic condensate treatment system mostly adopts the multi-stage depressurization flash + stripping stabilization process. The condensate stabilization will consume a large amount of heat source, the form of condensate treatment system heat exchange are relatively simple, and the heat exchange network is not optimized enough, resulting in more waste of waste heat resources. In order to save the energy and consumption, and achieve the goal of economic green production, it is necessary to optimize the energy consumption of the condensate treatment system and propose a transformation plan. Taking the YM condensate treatment system as an example, through the optimization study of the energy utilization scheme of the condensate treatment system, after the sequential heat exchange and the wide-channel heat exchanger optimization, the heat transfer efficiency of the condensate treatment system was greatly improved. The annual fuel gas cost could be reduced by 954 000 yuan, and the reformation investment could be recouped in one year. The economic benefit of the treatment plant was improved, and the comprehensive energy consumption of unit product was reduced.