A method for blending and transporting Marui crude oil in a long-distance pipeline at room temperature

Abstract

The invention relates to the field of petrochemical industry, in particular to a long-distance pipeline normal-temperature Merey crude oil mixing and conveying method. The long-distance pipeline normal-temperature Merey crude oil mixing and conveying method is characterized in that crude oil containing 4.08 percent of wax, 8.75 percent of colloid and asphaltene and 1.87 percent of sulfur is mixed into the Merey crude oil; the density of the oil is 0.7 to 0.9 g / cm<3> at 20 DEG C, and the mixing proportion is 20 to 40 percent. The long-distance pipeline normal-temperature Merey crude oil mixing and conveying method provided by the invention has the advantages that the operation is simple, the implementation is easy, and different mixing proportions can be selected according to different seasons, so that the viscosity of the Merey crude oil does not exceed 350 Pa*s, the cross-region 500Km pipeline conveyance can be realized, the annual conveying quantity can reach more than 10 million tons, in addition, mixed ingredients do not need to be separated, and the conveying cost and the processing cost are further reduced.

Description

technical field [0001] The invention relates to the field of petrochemical industry, in particular to a method for blending and transporting Marui crude oil through a long-distance pipeline at normal temperature. Background technique [0002] At present, the trend of heavy and inferior crude oil in the world is becoming more and more obvious. The high viscosity of oil makes it difficult to mine and transport in pipelines. In order to reduce the cost of raw materials and transportation, how to reduce its viscosity at room temperature, Realizing the long-distance pipeline normal temperature transportation of Marui crude oil has become a widely concerned issue in the current oil refining industry. Therefore, inventing a long-distance buried pipeline to mix and transport high-viscosity heavy crude oil-Marui crude oil at room temperature has great practical significance for some refineries processing high-viscosity crude oil to reduce transportation and processing costs. [0003...

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Problems solved by technology

[0006] Chinese patent CN1508215A "Method for reducing the viscosity of crude oil at low cost" discloses a method for reducing the viscosity of crude oil by adding aromatic hydrocarbon solvents. Although this method reduces the viscosity of crude oil to a certain extent, it requires Separation and recovery, to a certain extent, increases the cost of crude oil processing

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