초록 ▼

A method for precisely and effectively determining an asphaltene content in a heavy hydrocarbon oil which can be applicable to a wider range of asphaltene content is disclosed. The method comprises measuring absorbances of a sample solution having dispersed therein asphaltene particles at two differ

A method for precisely and effectively determining an asphaltene content in a heavy hydrocarbon oil which can be applicable to a wider range of asphaltene content is disclosed. The method comprises measuring absorbances of a sample solution having dispersed therein asphaltene particles at two different wavelengths being at a distance of at least 50 nm selected from the visible light range of from 500 to 1,000 nm and obtaining an asphaltene content from the two measured values utilizing a relationship. A device is also disclosed for determining asphaltene content in a sample solution. It includes dipping a means for determining the absorbances at two different wavelengths into each probes which are in a line, or connecting the means into a flow cell and passing the sample solution through the flow cell to determine the absorbances.

대표청구항 ▼

A device for determining an asphaltene content in a heavy hydrocarbon oil, which comprises a dip probe or flow cell for sampling a sample solution having dispersed therein asphaltene particles which is prepared from a sample oil to be determined, said dip probe or flow cell being set so as to face w

A device for determining an asphaltene content in a heavy hydrocarbon oil, which comprises a dip probe or flow cell for sampling a sample solution having dispersed therein asphaltene particles which is prepared from a sample oil to be determined, said dip probe or flow cell being set so as to face with the sample solution and being movable with up-and-down strokes so as to be in contact with or apart from the sample solution, a two-wavelength absorbance detector including a light source, passages for light to allow the light from the light source to pass through a sample solution of a given thickness introduced in the dip probe or flow cell, two interference filters each capable of transmitting the light having transmitted through the sample solution having a different wavelength selected from a range of from 500 to 1,000 nm, and phototubes or photocells each capable of converting the intensity of each of incident light and transmitted light having two different wavelengths into an electrical current, and a computing means capable of converting the electrical current values into an asphaltene content.