SU1480846A1 - Three-phase separator - Google Patents

Abstract

The invention relates to a separation technique in the oil industry and can be used to separate mixtures of liquids and gas, in particular, for separation and preliminary dehydration of oil. The aim of the invention is to improve the quality of waste water and the efficiency of the ejectors due to the intensification of the process of influence on the intermediate layer. The three-phase separator consists of a housing 1 with fittings for introducing a gas-liquid mixture 2, an outlet for oil 3, gas 4 and water 5. The oil collection chamber 6 with the bottom 9 is mounted in the housing 1. The partition 10 is installed between the oil collection chamber 6 and the overflow bridge 11, equipped with a shelf 12 On a shelf 12, under the bottom 9 of the oil-collecting chamber 6, ejectors 16 are placed with nozzles 17 connected to a pipeline 18 for supplying pre-dried oil and directed inside the separating chamber 15. Inside the receiving compartment 13 a pipeline has been laid for the intermediate layer d 20, terminating in nozzles 21 directed towards the ejector 16 and the pipe 22 connected to input preliminarily dehydrated oil. 1 il.

Description

The invention relates to the technique of separation and preliminary dewatering in the oil industry, can be used in other fields to separate mixtures of liquid and gas and is an improvement of the separator according to the author. St. No. 1389805.

The purpose of the invention is to increase the quality of waste water and the efficiency of operation due to the intensification of the process of influence on the intermediate layer,

The drawing shows the device, General view, section.

The three-phase separator consists of a housing 1 with fittings for introducing a gas-liquid mixture 2, an outlet for oil 3, gas 4 and water 5. In case 1, the oil collector chamber 6 is located from the front

7 and the rear 8 walls of the bottom 9. The partition 10, mounted between the oil collection chamber b and the overflow bridge 11, is provided with a shelf 12 placed with a slope towards the oil separator chamber 6 and entering below

its bottom 9 with the formation of the receiving compartment 13 for the intermediate layer,

8 shelf 12 has openings 14 for withdrawal from the separation chamber 15 formed by shelf 12, a partition

10 and the rear 8 wall of the oil collecting chamber 6, which releases water into the area of the apparatus. On the shelf 12, under the bottom of the oil-collecting chamber 6, ejectors 16 are placed with nozzles 17 directed inside the chamber 15 and connected to the pipeline 18 for supplying pre-dried oil. The space between the ejectors 16, the oil-collecting chamber 6 and the shelf 12 is sealed with a plug 19. Inside the compartment 13 formed by the bottom 9 of the oil-collecting chamber 6, the plug 19 and the shelf 12, there is a mixing device in the form of a pipeline 20 ending with nozzles 21 directed towards the ejectors 16, and connected to the nozzle 22 of the input of pre-dried oil.

Three-phase separator works as follows

The oil and gas mixture through the nozzle 2 enters the body 1, where the separation of gas bubbles and the simultaneous release of gas and water from the emulsion take place. In this case, a transition layer is formed and accumulated at the interface of the phase. Pre.

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the dewatered oil is poured through the front wall 7 into the oil collection chamber 6 and through the fitting 3 is withdrawn from the apparatus. Separated from the 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 from the gas-liquid mixture is withdrawn from the apparatus through the fitting 4 During accumulation, the transition layer formed at the oil-water interface flows under the bottom 9 into the receiving compartment 13, where, in order to prevent the occurrence of stagnant zones, it is exposed to hydrodynamic action by jets d 20 pre-dewatered oil, directed from the nozzles 21 in the direction of receiving ejectors 16.

In ejectors 16, under the influence of a stream, a stream of previously dewatered oil supplied through pipeline 18, the transition layer is ejected into the chamber 15 formed by the shelf 12, the partition 10 and the rear wall 8 of the oil recovery chamber 6, where it is separated into oil and water.

The water separated from the chamber 15 is deposited on the shelf 12 and through the holes 14 in the shelf 12 is brought to the bottom of the apparatus. Oil from the chamber 15 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-collecting chamber 6 depends on the size, performance of the apparatus and the physico-chemical properties of the separation fluids.

When using the proposed three-phase separator, the quality of waste water discharged from the apparatus is improved by preventing contamination with its transition layer and the efficiency of the ejectors, which is ensured by a constant effect on the transition layer in the receiving compartment, thereby eliminating the formation of stagnant zones at the plug covering the space between ejectors, oil tank and shelf.

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Claims (1)

The claims are executed with approach under the bottom of the oil-three-phase separator according to the author. a collection chamber with the formation of an IP 1389805 with days, characterized by a compartment for the intermediate layer, in order to improve the quality of the separator with installation water and the efficiency of the mixing device working in the compartment by intensifying the process, for example, in the form of a pipe on an intermediate layer, a half-pipe with nozzles for oil supply.