RU2359010C1 - Device for refining oil - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: proposed device for refining oil can be used in petrochemical and oil refining industry and is meant for improving oil parametres during drilling. Electrodes 4 form a conversion zone 2, located in the lower part of container 1 and are made in form of metal gauze coiled into a bobbin, the cells of which have branches in form sharp needles 5. The container is earthed. The device have two or more conversion zones 2, joined together in parallel or in series, which allows for increasing intensity of the process of improving parametres of the oil several times. High voltage can be applied to the electrodes from the power supply in form of dc or ac (sinusoidal) voltage, as well as positive or negative voltage.

EFFECT: wider field of application and efficiency of the device.

2 cl, 1 tbl, 5 dwg

Description

The invention relates to the field of petrochemical and oil refining industries and can be used to improve oil parameters in the process of its preparation.

A device for implementing the method of incomplete oxidation of lower hydrocarbons in an electric discharge (patent RU No. 2088565, IPC С07С 27/14, publ. 08/27/97), containing a plasma-chemical reactor with electrodes, a system for supplying a mixture of natural gas with oxygen or air, a system for outputting products reaction, and one or both of the electrodes are equipped with a cooling system. The cooling system is made in the form of serially connected grooves located inside the electrode, forming a coil, with the possibility of refrigerant flowing through it; in the lower part, the cooled electrode has an inclined groove-collector for collecting liquid reaction products and their drain.

When pulsed barrier discharge uses a high-voltage generator with a pulse duration of 60-100 μs with an amplitude of up to 10 kV and a repetition frequency of 1-3 kHz.

The main disadvantage is that the above device is designed to process natural gas into oxygen-containing products. which is (3.6-55%) wt.%, as well as the fact that the resulting processed products have very limited use. So, half of the products are water, formic acid - 15%, the rest - lower alcohols, methyl formate, ethers. The process provides for the supply of oxygen to the reaction zone, has an uncontrolled reaction process in an electric discharge plasma, which significantly increases the explosion and fire hazard of production and is not intended for oil refining.

The objective of the invention is to develop an improved device with which you can eliminate the above-mentioned disadvantages.

The specific objective of the invention is to develop an improved device with which to solve the problem of improving the parameters of oil.

This object is achieved in that the oil refining device in the electric field contains a tank, a feed supply system, a processed feed output system, a high-voltage voltage power supply, electrodes that form a converted zone located in the lower part of the tank and are made in the form of a twisted metal mesh in a roll, the cells of which have taps in the form of sharp needles, while the tank is grounded. In addition, the device may contain two or more converted zones, interconnected in parallel or in series.

The implementation of the electrodes in the form of a metal grid twisted into a roll, the cells of which have taps in the form of sharp needles, and the grounding of the capacitance allows the carrier to be exposed to an electric charge, leading to a change in the structure of the energy level of oil atoms, i.e. in oil there is a change in the ratio of hydrogen and the sum of oxygen, nitrogen, sulfur. As a result of processing on the proposed device, the amount of hydrogen sulfide in oil decreases from 380 ppm to 10 ppm - 14 ppm, total sulfur from 4.2% to sulfides, the fractional composition increases from 45% to 70%.

As a result of processing, favorable conditions are created for further processing of oil into oil products.

The essence of the technical solution is illustrated by drawings, where:

Figure 1 - General view of the device;

figure 2 is a view aa figure 2 diagram of the connection of the electrodes;

figure 3 is a diagram of the implementation of the electrodes;

figure 4 - arrangement of the electrodes;

figure 5 - arrangement of capacities.

The oil refinement device (Fig. 1) contains: capacity 1. converted zone 2, down conductor 3, electrodes 4, down conductors 5, power supply unit for high voltage voltage 6, a device controlled by a counter for the passage of oil flow 7, input 8 and output 9 production lines, pressure sensor 10, temperature sensor 11, drainage 12, grounding to earth 13. The electrodes 4 are located in the lower 1/3 part along the height of the tank 1 and form the converted zone 2. The electrodes 4 are a metal mesh with a step from 1 × 1 mm to 100 × 100 mm rolled up (figure 2). The mesh cells have bends in the form of sharp needles 5 (Fig. 3) with a height of 0.5 mm to 100 mm.

In the tank can be located two or more conversion zones (figure 4), which allow to accelerate the process by two or more times. The electrodes 4 are connected through a down conductor 3 to a power supply 6, through which a high-voltage voltage is supplied. In the lower part of the tank there is an entrance to the tank 1, connected to the input technological line 8. At the input technological line 8 there is installed a device for controlling the counter for the passage of oil flow 7, which controls the flow rate, volume and quality of oil. The following devices were installed on the tank for monitoring and emergency shutdown: pressure sensor 10, temperature 11, and oil drainage 12. In the upper part, the tank 1 has an outlet pipe connected to the output technological line 9. In the lower part of the vessel there is a ground point to ground 13.

Tanks 1 can be connected to each other both in parallel and sequentially through the input and output nozzles (figure 5).

Parallel connection of tanks makes it possible at a constant flow rate to increase the volume of oil passing through the device.

Serial connection of tanks allows at a constant flow rate to accelerate the process by two or more times and improve the parameters of the processed oil.

The device operates as follows.

Oil through the production line 8, controlled by the counter for the passage of oil flow 7, is dosed into the conversion zone 2 of the tank 1. In the conversion zone, the oil contacts the electrodes 4 and taps 5 in the form of sharp needles. Voltage is applied to the electrodes 4 through the connections of the collector 3 from a power supply unit of a high voltage voltage of 5-10 kV / mm with a variable or constant current density of 0.0001 A / cm ² and with a frequency of 50 Hz. The oil flow rate of 4.5 m ³ / h-10.5 m ³ / h.

Oil is transferred from the converted zone to the output technological line 9. The quality of the processed oil output is controlled through a device controlled by an oil flow meter 7, and a high-voltage voltage supply unit 6.

A constant or alternating voltage (sinusoidal voltage) can be supplied to the electrodes from the high voltage power supply, and a positive or negative voltage can also be applied to the electrodes.

The oil refinement device was tested on NGDU (Karabashneft) marketable oil with the following parameters:

High voltage 5-10 kV / mm Frequency 50 Hz Current density 0.0001 A / cm ² Oil flow rate 4.5 m ³ / h - 10.5 m ³ / h

At the exit from the oil refining device, sampling was carried out every 4.5 m ³ . The results are presented in the table.

Table Parameter Name The value of the parameter before entering the device Processing at an oil flow rate 4,5 m ³ / h 7.5 m ³ / h 10.5 m ³ / h 13.5 m ³ / h Fractional composition up to 200 ° C 19% 22% 25% 26% 23% up to 320 ° С 45% 55% 62% 70% 58% The content of H ₂ S 380 ppm 177.8 ppm 195.9 ppm 43.1 ppm 14.5 ppm

The results presented in the table show that the oil performance after processing on the device is better than before processing.

The proposed device is fire and explosion proof, easy to operate and provides high performance due to low power consumption: Electricity consumption per 1 m ^{3 of} processed oil is up to 0.001 kW.

The proposed economic effect of the device may be 35 ml. rub. in year.

Claims (2)

1. An oil refinement device containing a container, electrodes, a feed supply system, a processed feed output system, a high voltage power supply unit, characterized in that the electrodes form a converted zone located in the lower part of the tank and made in the form of a rolled metal mesh cell which have bends in the form of sharp needles, while the tank is grounded. 2. The device according to claim 1, characterized in that it contains two or more converted zones, interconnected in parallel or in series.

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