Wax deposition simulation device and method

Abstract

The invention discloses a wax deposition simulation device and method, and belongs to the technical field of crude oil transportation. The wax deposition simulation device comprises a sample outer cylinder, a replaceable wax deposition inner cylinder and a cooling assembly for cooling the wax deposition inner cylinder, the attribute of the wax deposition inner cylinder is matched with that of the inner wall of the pipeline, the wax deposition inner cylinder is arranged in the sample outer cylinder, and the cooling assembly is installed on the wax deposition inner cylinder; the cooling assembly comprises a cooling liquid input pipe, a cooling liquid output pipe and a sealing device; the sealing device is mounted at the top end of the wax precipitation inner cylinder, the cooling liquid input pipe penetrates through the sealing device and extends into the bottom of the wax precipitation inner cylinder from the top of the wax precipitation inner cylinder, and the cooling liquid output pipe penetrates through the sealing device, extends into the wax precipitation inner cylinder and is arranged at the top of the wax precipitation inner cylinder; the cooling liquid input pipe is used for inputting cooling liquid into the wax precipitation inner cylinder, and the cooling liquid output pipe is used for outputting the cooling liquid from the wax precipitation inner cylinder. For different oil pipelines, the wax deposition inner cylinders matched with the attributes of the inner walls of the pipelines are adopted, and the wax deposition simulation result deviation caused by the fact that the attributes of the wax deposition inner cylinders and the attributes of the inner walls of the pipelines are not matched is reduced.

Description

technical field [0001] The present application relates to the technical field of crude oil transportation, in particular to a wax deposition simulation device and method. Background technique [0002] In the process of using the pipeline system to transport waxy crude oil, when the transport temperature is lower than the wax precipitation point of waxy crude oil, the wax crystals in the crude oil will gradually precipitate and deposit on the inner wall of the pipeline. This phenomenon is called crude oil pipeline Wax deposition phenomenon. The wax deposits on the inner wall of the pipeline will not only reduce the effective flow area of ​​the pipeline, increase the pressure drop of the pipeline, reduce the transmission capacity, and may even cause pipe plugging accidents in severe cases. Therefore, it is necessary to use a wax deposition simulator to simulate the wax deposition process in the pipeline, and then provide technical support for the safe operation of the waxy cr...

AI Technical Summary

Problems solved by technology

However, the type of wax deposition cylinder used in the related art is single, which leads to deviations between the wax deposition results obtained in the simulation experiment and the wax deposition results in the simulated pipeline inner wall, and the accuracy of the simulation experiment is low

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