Conductivity method-based moisture content measurement method of crude oil

A measurement method and technology of moisture content, applied in the direction of measuring devices, material analysis through electromagnetic means, instruments, etc., can solve the problems that the accuracy of measurement cannot be guaranteed, achieve strong scalability, improve efficiency, and ensure measurement accuracy Effect

Inactive Publication Date: 2019-03-29
HARBIN UNIV OF SCI & TECH
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Problems solved by technology

[0005] The technical problem mainly solved by the present invention is to provide a method for measuring the water content of crude oil based on the conductivity method, which can solve the problem that the current conductivity method needs to calibrate the conductivity value of the pure water phase in the sample in advance to measure the water content of crude oil, resulting in that the accuracy of the measurement cannot be guaranteed. The problem

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  • Conductivity method-based moisture content measurement method of crude oil
  • Conductivity method-based moisture content measurement method of crude oil
  • Conductivity method-based moisture content measurement method of crude oil

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Embodiment Construction

[0030] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0031] see figure 1 , the embodiment of the present invention includes:

[0032] A schematic diagram of a method for measuring the water content of crude oil based on the conductometric method, comprising the following steps:

[0033] 1) Put the gravity sensor, temperature sensor, and heating device into the electrode conductivity meter based on the constant current source;

[0034] 2) When the sample is put into the electrode conductivity meter described in step (1), measure the temperature T 1 , to measure the voltage U of the electrode conductivity meter m1 , the total mass of the mixed liquid E 1 ;

[0035] 3) Based on step (2), the samp...

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Abstract

The invention discloses a conductivity method-based moisture content measurement method of crude oil. The conductivity method-based moisture content measurement method comprises the steps of (1) placing a gravity sensor, a temperature sensor and a heating device in a constant-current source-based electrode conductivity device; (2) placing a sample in the electrode conductivity device in the step (1), measuring a temperature, and measuring a voltage of the electrode conductivity device and total mass of the sample; (3) heating the sample according to the step (2), controlling the sample to a designed temperature, and measuring the voltage of the electrode conductivity device and the total mass of the sample; and (4) calculating moisture content of the sample according to the voltages and the mass which are measured in the steps (2) and (3), crude oil fraction vaporization rate corresponding to temperatures in measurement for two times, a current of the constant-current source used by the electrode conductivity vice, an electrode constant of the electrode and a relation between the conductivity and salt content.

Description

technical field [0001] The invention relates to the technical field of measuring the water content of crude oil, in particular to a method for measuring the water content of crude oil based on a conductivity method. Background technique [0002] At present, the common crude oil water content measuring instruments based on the conductivity method in the market need to calibrate the conductivity value of the pure water phase in the measured sample, but the conductivity value of the pure water phase in the measured sample is often unable to be obtained accurately, which leads to the conductivity method. The accuracy of crude oil moisture content measurement cannot be guaranteed. With the continuous development of crude oil water content measurement technology, more and more scientific and technological workers have begun to study the measurement method of crude oil water content based on conductivity method, which puts forward a higher measurement accuracy of crude oil water co...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/04
CPCG01N27/048
Inventor 尤波孙瑞达张天勇
Owner HARBIN UNIV OF SCI & TECH
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