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Method of simultaneously measuring water content and oil content of oily sludge

A measurement method and technology for water content, applied in the field of material detection, can solve the problems of inaccurate analysis of water content and oil content, time-consuming analysis process, etc., and achieve the effects of short time consumption, high accuracy of results, and good repeatability

Inactive Publication Date: 2015-06-24
UNIV OF SHANGHAI FOR SCI & TECH
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Problems solved by technology

[0006] Aiming at the problems of inaccurate analysis of water content and oil content in oily sludge, time-consuming analysis process and use of a large amount of toxic organic solvents, the present invention proposes a method for simultaneously measuring water content and oil content of oily sludge, which is a Low-field NMR combined with partial least squares regression algorithm to quickly and accurately measure the water content and oil content of oily sludge

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  • Method of simultaneously measuring water content and oil content of oily sludge
  • Method of simultaneously measuring water content and oil content of oily sludge
  • Method of simultaneously measuring water content and oil content of oily sludge

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Embodiment Construction

[0020] The invention discloses a method for rapidly and accurately measuring the water content and oil content of oily sludge simultaneously. The specific implementation steps are as follows:

[0021] 1) Sample collection: 31 samples of oily sludge in Zhoushan (ZS-D and ZS-B) and Hangzhou area (HZ-OS) were collected in different batches; in addition, 3 samples were collected in Hangzhou area (HZ-OS) There are 3 oily sludge samples, the sample source is representative of the sampling area, and the number of samples is more than 30.

[0022] 2) Sample measurement: The water content and oil content of 34 samples were measured using the improved Dean-Stark device recommended by the Oil Sands Administration of Alberta, Canada, as reference values ​​for subsequent modeling. The results are shown in Table 1. The 31 samples in Hangzhou and Zhoushan The water content and oil content are shown in Table 2 for the water content and oil content of the three samples in Hangzhou area. From...

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Abstract

The invention relates to a method of simultaneously measuring water content and oil content of oily sludge. The method includes: collecting oily sludge samples from different sources from different batches; measuring water content and oil content of each sample with a modified Dean-Stark device, as modeling reference values; subjecting each sample to low-field nuclear magnetic resonance analysis to obtain an echo attenuation curve, and performing inversion to obtain a transverse relaxation time T2 curve of the sample; correlating the echo attenuation curve data of the samples and corresponding water content and oil content, and performing fitting with chemometrics software to establish a water content model and an oil content model; calling established models of water content and oil content calibration sets to analyze the echo attenuation curves of the samples to be measured, so as to obtain the corresponding water content and oil content values. The method has the advantages such as high result accuracy, good repeatability, low time consumption, no consumption of organic reagents and no need for pre-processing of samples; by the method, the water content and oil content of the samples can be measured simultaneously.

Description

technical field [0001] The invention relates to a material detection technology, in particular to a method for simultaneously measuring the water content and oil content of oily sludge. Background technique [0002] During the extraction, transportation, storage and refining of crude oil, due to natural or human factors, a large amount of by-products composed of water, oil and solid particles will be produced, which is called oily sludge. According to different sources, generally its water content is 30-85%, oil content is 15-50%, and solid content is 5-46%. Among them, water mainly exists in the form of stable water-in-oil emulsion. Due to the high content of petroleum hydrocarbons and heavy metals in oily sludge, it is a hazardous waste, so it needs to be treated innocuously; at the same time, due to the high content of petroleum hydrocarbons, different methods can be used to recover the crude oil . In order to evaluate the economy of different recovery methods and the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N24/08
Inventor 郑晓园应芝王波
Owner UNIV OF SHANGHAI FOR SCI & TECH
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