SU971426A1 - Apparatus for dehydrating hydrocarbon liquid - Google Patents

Description

(54) DEVICE FOR HYDROCARBON DECOMPOSITION

LIQUIDS

one

This invention relates to a technique for treating crude oil and can be used in petroleum engineering to prepare oil for refining in refineries.

A device for dehydrating a hydrocarbon liquid containing flat electrode 1 is known.

A device for dehydrating hydrocarbon liquids is also known, which contains inlet and outlet pipes and electrodes in the form of discs connected to a high voltage source 2.

A disadvantage of the known devices is the low quality of dehydration due to the fact that the velocity of the fluid must be such that the water dispersed in it does not grind in the turbulent flow and that the voltage is limited by the electrical conduction of the saturated hydrocarbon fluid.

The purpose of the invention is to improve the quality of dehydration.

This goal is achieved by the fact that a device for dehydrating hydrocarbon liquids containing inlet and outlet nozzles and electrodes in the form of discs connected to a high voltage source is provided with a dielectric disk interposed between the electrodes with helical multidirectional channels connecting the inlet nozzle to the outlet and the inner surface of the electrodes

10 is executed with spiral edges of triangular section, direction :; and the pin of the spirals which coincide with the direction and pitch of the adjacent spiral channels of the dielectric disk.

15

Claims (4)

The achievement of this goal is also facilitated by the fact that the dielectric disk is made up of a composite of flat parts with spiral grooves, the electrodes are made of magnetic conductive material and the device is a package of dielectric disc electrodes, and the spiral edges on the surfaces of the electrodes inside the package are directed in different directions. 39 In FIG. 1 shows the dielectric disk of FIG. 2, section A-A of FIG. one; in fig. 3 is a cross section of an electrode having spiral ribs from both end surfaces; in fig. 4 is a cross section of one of the extreme parts of the dielectric disk; on flash 5 is a cross section of one of the extreme electrodes; in fig. 6 - assembling and connecting pipes to the collector; FIG. 7 is a general view of a device assembled from several elements. A device for dehydrating a hydrocarbon liquid contains dielectric disks consisting of three parts: the middle part on the end surfaces of which there are spiral multidirectional grooves 2 and 3, each of which has in its cross section the shape of a semicircle, and the extreme parts 4 and 5 with grooves on one end surface. The parts of the dielectric disk 4, 1 (, 5 are hermetically interconnected. On the end surfaces of each of the electrodes 6, 7, 8 are wound spiral edges 9 and 10 of a triangular cross section, the pitch and directions of each of which coincide with the pitch and direction of the closest a spiral semi-channel of a dielectric disk formed by a groove 2 or 3. Axial holes II are made in the component parts x 4, 1, 5, and in electrodes 6-8, holes with a large diameter are installed. connected to the spiral through each hole of the dielectric disk. Through the hole 14 at the peripheral part of the dielectric disk and the nozzle 15 connected to it, the helical channels communicate with the outlet collector 16 leading to the settling basin (not shown). The electrolyte is connected to the high voltage source by wires 17. During the operation of the device, a hydrocarbon liquid with a demulsifier mixed with reagent mixed into it is heated to the required temperature and is fed through the feed pipe 13 into the spiral channels of each dielectric disk. A constant or mixed voltage applied to the electrodes 6-8 polarizes the dispersed: in the medium there are particles of formation water in which electric charges of different potentials are induced. When such particles meet at the peripheral part of each dielectric diode, as well as when they pass through the hole 14 and move along the nozzle 15 and further, they mutually attract and merge into. larger droplets capable of precipitating less dense hydrocarbon c) food, dehydrating it. The process of coalescence also takes place when the emulsion oil moves along spiral channels. This is facilitated even more by the possibility of applying the highest optimal electrical voltage, which can be safe from the occurrence of short circuits due to increased electrical conductivity, as well as the intense impact on the treated hydrocarbon medium of partial discharges arising on the sharp parts of the helical ribs 9 and 10 electrodes 6-8. An even more intense effect on the coalescence process is due to the movement of the medium being processed in a spiral. The most effective mode of operation of the device, depending on the characteristics of the medium to be treated, can be determined by selecting the optimal values of electrical voltage, its nature (constant or variable) and the flow rate of the liquid. bones along spiral channels, which can be significantly more pronounced than in many well-known electric dehydrators and apparatuses, where for various reasons the velocity of the medium cannot exceed a certain amount so that the motive medium does not enthrall the smaller of the enlarged droplets moving towards it. An important advantage of the proposed device is the possibility of applying the highest electric voltage and a sufficiently high velocity of the medium required to create deeper dehydration. By increasing the number of dielectric disks 4, 1, 5 and, respectively, of the electrodes, it is possible to increase the performance of the device to the desired value. Apparatus of the invention 1. A device for dewatering a hydrocarbon 1 ply containing inlet and outlet pipes and electrodes in the form of disks connected to a high voltage source, characterized in that it is equipped with a dielectric disk to improve the quality of dewatering. with two spiral multidirectional channels connecting the inlet pipe with a diverter, and the inner surface of the electrodes is made with spiral edges of a triangular cross section, the direction and pitch of the spiral it coincides with the direction and adjacent spiral steps of the dielectric disk channels. 2. The device according to claim 1, in order to simplify its manufacture, the dielectric disk is not made up of flat parts with spiral grooves. 3. The device according to claim 1, wherein the electrodes are made of a magnetic conductive material. i 4. The device according to PP. 1 and 2, that is, in order to increase productivity by 10, it is completely in the form of a package of electrodes with dielectric disks, and the spiral ribs on the surfaces of the electrodes located inside the package are directed to different parties. Sources of information taken into account in the examination 1. US patent number 3255571, cl. 55-9, published. .J966. 2. US patent number 2033152, cl. 204-188, pub. 1933. Figg 1 Fig. V FIG. f /   / 56 FIG. b If 15 W FIG. 6