Crude oil electric desalting test device

Abstract

The invention discloses a test device for crude oil electric desalting, comprising a tank body with upper and lower parts sealed by flanges. A cylindrical electrode grid is arranged inside the tank body and an electric heating sleeve is arranged outside the tank body; an outlet pipe and an inlet pipe of the crude oil as well as a thermometer inserting port are arranged at the upper part of the tank body, while an observing and sampling port and a sewage draining exit are positioned at the lower part of the tank body. The crude oil is fed continuously through the outlet pipe and the inlet pipe, the electric field intensity in the tank body is regulated by a transformer and the temperature of the tank body is controlled by the electric heating sleeve. When researching the conditions of the electric desalting process, the test device can effectively simulate the actual conditions of the electric desalting operations; control the conditions by direct visual measurement through the observing and sampling port in the operation process; and take samples and make analysis without interrupting the test, thus improving the accuracy and reliability of the test. Moreover, with simple operation, shortened test time and repeatability of test results, the test device can be conveniently used in various tests on the desalting effects of the electric desalting devices, and effectively prolong the running period of the refinery equipment.

Description

technical field [0001] The invention relates to a crude oil electric desalting test device, which can be used for simulating and researching the electric desalting device in the petrochemical industry. Background technique [0002] The crude oil electric desalting device is the leading device among many devices in the oil refining industry, and the desalination and dehydration of crude oil is also the first process in the anti-corrosion process of the oil refining process. Chinese patent ZL91229941.X discloses an electric desalination test instrument, which is composed of an electric desalter, a bath fluid box, a thermal fluid, a heater and an electric control mechanism. The rod-type electrode structure can partially simulate the working conditions of electric desalination, but because it cannot feed continuously, only static tests can be carried out, so the test data deviates from the actual production data, which lacks guiding significance for production and research. Chi...

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Problems solved by technology

Chinese patent ZL91229941.X discloses an electric desalination test instrument, which is composed of an electric desalter, a bath fluid box, a thermal fluid, a heater and an electric control mechanism. The rod-type electrode structure can partially simulate the working condition of electric desalination, but because it cannot continuously feed materials, only static tests can be carried out, so the test data and actual production data deviate greatly, which lacks guiding significance for production and research

Chinese patent ZL02259725.5 discloses an electric desalination test device, which is characterized in that the top of the electric desalination tank adopts a sealed structure, which can ensure that it is completely sealed under certain electric field, temperature, and pressure conditions when simulating industrial electric desalination operations. It does not leak and can realize continuous feeding, but due to the power limitation of the electric control mechanism, the processing scale is too small; when simulating the electric field strength, the test data and production data deviate greatly

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