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Method for separating a liquid from another liquid

One kind of liquid, another kind of technology, applied in the direction of separation method, liquid separation, immiscible liquid separation, etc., can solve problems such as failure, and achieve the effect of promoting coalescence and shortening residence time

Inactive Publication Date: 2004-06-30
SULZER CHEMTECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This type of filter is only suitable for low water content, which ranges from 1% to 10ppm, because in the case of high water content, the filter is saturated with water and thus fails

Method used

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  • Method for separating a liquid from another liquid
  • Method for separating a liquid from another liquid
  • Method for separating a liquid from another liquid

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Embodiment Construction

[0031] figure 1 A three-phase separation plant A is shown, comprising the device 1 of the invention, the function of which is to separate a two-phase liquid mixture 10, in particular to separate small water droplets from oil. A three-phase mixture comprising, in addition to the two liquid phases, a gas phase is fed via valve B into plant A, in which the gas is separated from the two-phase mixture 10 and discharged from plant A via a pipe connection C. In the two-phase mixture 10, the first liquid is contained in the form of small droplets within the second liquid, in the example shown, the specific gravity of the first liquid (water) is greater than the specific gravity of the second liquid (oil).

[0032] The mixture 10 is separated as far as possible into two liquids in the device 1 according to the method according to the invention: the first step of the method is carried out in a part 11 which contains internals 110, such as the static mixer shown in FIG. 2 . Coalescence ...

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Abstract

During a first interval, droplet coalescence takes place in turbulent flow through packed columns or a static mixer (110). Over a further coalescence interval, flow velocity is reduced. The flow is then passed up or down at further-reduced velocity, under which condition, larger rising- (oil) or falling- (water) droplets (122) are collected and separated. Smaller droplets (123) (of water) are entrained away, in the other fluid (oil). An Independent claim is included for the separation equipment. Preferred Features: Flow velocities are 0.1-1 m / s, 0.05-0.5 m / s and 0.01-0.1 m / s in the three stages. During the last, further in-built components (132) foster additional coalescence. Ordered-structure packings are used in the first and third stages. The first stage is divided into two parts. From the first to the second of these, the Weber number of the flow reduces, resulting from variation of hydraulic diameter and / or of geometry of inbuilt components. The mean diameter of coalescing droplets increases thanks to the reduction in flow velocity.

Description

technical field [0001] The invention relates to a method for separating a first liquid from a second liquid, in particular water droplets from oil or conversely oil droplets from water. Background technique [0002] Oil from mineral deposits, ie petroleum or so-called condensate, usually contains water as a result of geological processes, the intrusion of seawater into oil or gas fields, or the injection of high-pressure water to maintain pressure in oil fields during oil extraction. Condensate oil is a liquid composed of heavy hydrocarbons, which appears as an accompanying substance in the process of gas recovery, but must be separated from the gas. The latter concepts of oil and petroleum also include condensate. [0003] Only a small amount of water is tolerated in the oil used as a feedstock for refining, due to the corrosion of tankers or pipelines, due to the transportation costs of worthless water, and due to the fact that the fractionation process in most refineries...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D17/02B01D17/00B01D17/022B01D17/025C10G33/06
CPCY10S210/05B01D17/00C10G33/06B01D17/041B01D17/045B01D17/02
Inventor C·茫德里H·拉克斯图赫
Owner SULZER CHEMTECH AG