SU1574241A1 - Device for introducing demulsifier to water-oil emulsion flow - Google Patents

Abstract

The invention relates to devices for injecting a demulsifier into a stream of a water-oil emulsion during desalting and dehydration and can be used in the petroleum, petrochemical, chemical and other industries. The aim of the invention is to increase the efficiency of treatment of a water-oil emulsion with a demulsifier. The device comprises a collector for introducing the demulsifier 1 tangentially connected to the cylindrical mixing chamber 2 with the confuser 3 fixed at the entrance to the cylindrical mixing chamber 2. At the exit the cylindrical mixing chamber 2 is made in the form of petals 4, every second of which is bent towards the transport pipeline 5 The device is installed inside the transport pipeline 5, along the inner perimeter of which, at the exit section of the cylindrical mixing chamber, a diaphragm in the form of truncated nnogo cone 6. 1 ZP f-ly. 3 il.

Description

The invention relates to a device for introducing a demulsifier into a stream of oil-water emulsion during desalination, dehydration and can be used in the petroleum, petrochemical, chemical and other industries.

The purpose of the invention is to increase the efficiency of processing oil-water ed emulsions with a demulsifier.

In FIG. 1 shows a device, a General view; in FIG. 2 is a section AA in FIG. 1; in FIG. 3 is an embodiment of a device in which a cylindrical -> 5 'mixing chamber is connected to several collectors located in one or consecutive sections.

The device comprises a collector for input 20 of the demulsifier 1, tangentially connected to the cylindrical mixing chamber 2 and to the confuser 3, mounted at the entrance to the cylindrical mixing chamber 2. The output 25 end of the cylindrical mixing. chamber 2 is made in the form of petals 4, each second of which is bent towards the transport pipeline

5. Chamber 2 is coaxially mounted in the in-line pipeline 5, along the inner perimeter of which at the output section of the cylindrical mixing chamber there is installed a diaphragm 6 in the form of a truncated cone.

For the purpose of more intensive mixing, the cylindrical mixing chamber is tangentially connected to several collectors 1 located in one or sequential sections, and the twisting of the demulsifier introduced through these collectors can be carried out in the same or in opposite directions.

The device operates as follows.

The oil-water emulsion is forcedly moved through the transport pipeline 5, enters the confuser 3 and then enters the cylindrical mixing chamber 2. At the same time, a demulsifier is tangentially introduced through the collector 1 into the cylindrical mixing chamber under pressure. The flow rates of the demulsifier and the oil-water emulsion are different in direction and absolute value, which causes their intense interaction with each other with the formation of an emulsion consisting of three components of oil-water-demulsifier (N-V-D).

Since the rate of introduction of the reagent into the cylindrical mixing chamber 2 is greater than the speed of movement of the emulsion through the transport pipe 5, it swirls the flow of the emulsion in the direction determined by the direction of introduction of the reagent. The rotational movement of the system contributes to greater dispersion of the reagent in the emulsion. Next, the swirling flow is directed to the output section of the cylindrical mixing chamber · where it is intensively mixed with that part of the emulsion that has not passed through the mixing chamber 2. Intensive mixing of these flows is facilitated by the petals bent towards the transport pipeline and the diaphragm 6 installed inside the transport pipeline 5.? Th is due to the fact that the flow of oil-water emulsion, which has not passed through the mixing chamber, encounters a diaphragm and petals located in the same section on the path of movement, sharply о increases turbulence due to the narrowing of the flow, and vortex flows are created behind the bent petal, which contribute to intensive mixing of two flows: N-V-D and water-oil emulsion. The presence of the confuser '3 contributes to the guaranteed passage of part of the emulsion through the mixing chamber, reduces the hydraulic resistance for introducing the emulsion into the cylindrical mixing chamber.

I -,

The proposed device provides an effective treatment of a water-oil emulsion with a demulsifier due to their intensive mixing with the formation of the N-V-D system with drops of a small diameter demulsifier, which increases the efficiency of the process of processing a water-oil emulsion with a reagent.

The efficiency of emulsion treatment with a demulsifier is increased due to its more intense distribution over the cross-section of the transport pipeline with the formation of smaller drops of a demulsifier, the consumption of a demulsifier is reduced due to a more effective interaction with a water-oil emulsion.

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Claims (2)

The formula of the invention 1. A device for introducing a demulsifier into a stream of oil-water emulsion, including a transport pipeline and a collector for introducing a demulsifier, tangentially connected to a cylindrical mixing chamber coaxially placed inside the transport pipeline, at the inlet of which a confuser is installed, is shaped in the form of petals, each second of which is bent in the direction of the transport pipeline, while the device is equipped with a diaphragm in the form of a truncated cone, mounted on the inner perimeter of the transport pipeline to level of the output section of the mixing chamber " 2. The device according to p. 1, characterized in that it is provided in that, in order to increase the efficiency of processing the emulsion, the output end of the cylinder is 5 A-4 wife with additional collectors connected tangentially with a cylindrical mixing chamber.