SU1389805A1 - Three-phase separator - Google Patents

Abstract

The invention can be used to separate mixtures of liquids and gas, in particular for the separation and preliminary dehydration of oil. The purpose of the invention is to improve the quality of the discharged water and the efficiency of dehydration of high-bypass oil. The separator consists of a housing 1 with fittings 2-5, respectively, the input gas-liquid mixture, the output of oil, gas and water. A body-cleaning chamber 6 is mounted into the housing 1. The transfer 10, installed between the oil collecting chamber 6 and the overflow bridge 11, is provided with a shelf 12 directed toward the oil collecting chamber 6. The shelf 12 and the hole 13 are provided for output from the chamber 14 formed by the shelf 12 and the partition 10, the released water in the water zone of the apparatus. On shelf 12, underneath the oil skid box, gauges 6, ejectors 15 are placed with nozzles 16 directed inside the chamber 14 and connected to the pipeline 17 for supplying previously dehydrated oil. Spread by ejectors 15, oil collecting chamber 6 and shelf 12 are sealed. 2 Il. (L

Description

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The invention relates to the technique of separation and preliminary dehydration of oil in the oil industry and can be used in other fields to separate mixtures of liquids and gas.

The purpose of the invention is to improve the quality of wastewater and increase the efficiency of dewatering high-watered oil.

FIG. 1 shows the separator, general view, section; in fig. 2 shows section A-A in FIG. one.

The three-phase separator consists of case I with fittings for introducing a gas-liquid mixture 2, withdrawal of oil 3, gas 4 and water 5. In case 1 there is an oil tank 6 with a front 7 and rear 8 walls and a bottom, I eat 9. The partition 10 is installed between the oil collecting chamber 6 and the overflow bridge 11 are provided with a shelf 12, which is mixed with a bias towards the oil collecting chamber 6. The shelf 12 has holes 13 for taking it out of the separation chamber 14, adjacent to the oil collecting chamber formed by the shelf 12 and the partition 10, water released into the water zone parata. On the shelf 12, under the bottom of the oil-collecting chamber 6, ejectors 15 are placed with nozzles 16 directed inside the chamber 14 and connected to the pipeline 17 for supplying pre-dehydrated oil. The space between the ejectors 15, the oil collecting chamber 6 and the shelf 12 is sealed with a plug 18.

The separator works as follows.

Oil and gas mixture through the nozzle 2 enters the housing 1, where the separation of gas bubbles and the simultaneous release of gas and water from the emulsion. In this case, a transition layer is formed and accumulated at the phase interface. The pre-dehydrated oil is poured through the front wall 7 into the oil collection chamber 6 and through the fitting 3 is withdrawn from the apparatus. The separated water settles to the bottom of the apparatus, passes under the bottom 9 of the oil-collecting chamber 6 and further under the shelf 12 through the overflow bridge 11 is poured into the water compartment and removed from the apparatus through the fitting 5. The gas released on the gas-liquid mixture is withdrawn from the apparatus through shtutser 4 The transition layer formed at the oil-water interface is attracted by the oil and water flows to the front wall 7 and is pulled under the bottom 9 of the oil collection chamber 6 to receive ejectors 15.

In the ejectors 15 under the action of the stream of a stream of previously dehydrated oil supplied through the pipeline 17, transition 0

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The liquid layer is ejected into the chamber 14 formed by the shelf 12 and the partition 10, where it is separated into oil and water. The water separated from the chamber 14 is deposited on the shelf 12 and through the holes 13 in the shelf 12 is brought to the bottom of the apparatus. Oil from the chamber 14 through the upper edge of the wall 8 flows into the oil-collecting chamber 6 and is removed from the apparatus through the nozzle 3.

The number of ejectors installed under the bottom of the oil collection chamber b depends on the size, performance of the apparatus and the physicochemical properties of the separated fluids.

The proposed three-phase separator design has the following technical and economic advantages: the quality of the waste water discharged from the apparatus is improved by preventing contamination with its transition layer, which is provided by ejectors destroying and pumping the transition layer into the chamber formed by the shelf and partition wall where it is divided into water and oil and possible flow of the intact part of the transition layer, together with the oil released into the oil collection chamber; reduction of oil loss due to prevention of removal of the transition layer with water, which is ensured by the operation of ejectors and a chamber formed by a shelf and a partition; an increase in the efficiency of dewatering of high-watered oils, which is achieved by an increase in the productivity of the apparatus due to an increase in its resistance to fluctuations in loading due to the constant forced removal of the transition layer from the phase boundary and its active treatment.

Claims (1)

Invention Formula Three-phase separator, which includes an oil-collecting chamber, a spillway, 0 attached to the bottom of the separator and a partition between the oil-collecting chamber and a drainage bridge, characterized in that, in order to improve the quality of the discharged water and the efficiency of dewatering high-watered oil, the separator is equipped with a shelf attached to the lower edge of the partition and installed with a slope towards to the oil-collecting chamber with the formation of the separation chamber, and the ejectors installed below the oil-collecting chamber above the floor with nozzles directed inside the separation chamber, while the separator it is provided with a plug placed between the oil-collecting chamber, ejectors and a shelf, and in the shelf under the ejectors holes are made. Aa } 3J8 10 /; // / / ABOUT Fi.2