公开(公告)号：US20170059091A1

公开(公告)日：2017-03-02

申请号：US15250030

申请日：2016-08-29

Applicant: Chevron U.S.A. Inc.

Inventor： Saham Sam Tafreshi ,  Paul Mark Shain ,  Jen Kai Chen

IPC: F17C9/04 ,  F02C1/02

CPC classification number: F17C9/04 ,  E21B43/00 ,  F25J1/0022 ,  F25J1/0035 ,  F25J2220/64 ,  F25J2240/04 ,  F25J2240/40

Abstract: Disclosed are processes in which the pressure of a dense phase fluid stream containing hydrocarbons is reduced to produce a two-phase fluid stream, and energy is recovered. The process includes passing the dense phase fluid stream at a pressure greater than the cricondenbar pressure of the dense phase fluid stream through an expander where the dense phase fluid stream is expanded isentropically such that a two phase fluid stream having a pressure lower than the pressure of the dense phase fluid stream leaves the expander. The expander is coupled to a rotating mechanical power user, such that the expander drives the rotating mechanical power user. The process further includes passing the two phase fluid stream leaving the expander to a separator such that the two phase fluid stream is separated into a vapor phase stream and a liquid phase stream. The composition or quantity of liquid formed can be adjusted to control the dew point of the gas produced from the dense-phase fluid.

Abstract translation: 公开的是其中包含烃的致密相流体流的压力被降低以产生两相流体流的过程，并且回收能量。 该过程包括使致密相流体流在致密相流体流的环形压力下通过膨胀器，其中致密相流体流等离子体膨胀，使得具有低于压力的压力的两相流体流 密相流体流离开膨胀机。 膨胀机联接到旋转的机械动力用户，使得膨胀器驱动旋转的机械动力用户。 该方法还包括使离开膨胀器的两相流体流通过分离器，使得两相流体流分离成气相流和液相流。 可以调节形成的液体的组成或数量，以控制从密相流体产生的气体的露点。