Use of polytetrafluoroethylene in crude oil extraction equipment

A technology of polytetrafluoroethylene and crude oil, which is applied in the direction of coating, etc., can solve the problems of complex composition of washing water and increase the cost of degrading washing water, and achieve the effects of saving consumption, reducing emissions, and improving wear resistance and corrosion resistance

Inactive Publication Date: 2013-01-02
CHINA NAT OFFSHORE OIL CORP +2
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Problems solved by technology

This makes the composition of washing water more c...

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Embodiment Construction

[0009] The present invention will be further described in detail below in conjunction with specific embodiments.

[0010] When manufacturing crude oil extraction equipment, a layer of PTFE coating is applied to the inner wall of the container in contact with crude oil in the crude oil transportation pipeline, crude oil storage tank, and extraction process. The thickness of the coating can be 100 microns~ 200 microns.

[0011] In order to obtain sufficient surface adhesion on the surface of the workpiece, first remove all the grease on the surface to be coated, use an organic solvent to dissolve the grease, and heat to about 400°C to completely volatilize. Then, the workpiece is cleaned mechanically by sandblasting, and the surface is roughened; the bonding ability of the coating and the surface of the workpiece can be improved by applying an adhesive agent (primer).

[0012] The coating method of polytetrafluoroethylene coating can adopt one of the following methods:

[0013] 1. Disp...

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Abstract

The invention discloses use of polytetrafluoroethylene in crude oil extraction equipment, and specifically relates to use of polytetrafluoroethylene as an inner wall coating layer in crude oil transportation pipelines and storage tanks and can effectively solve practical problems such as easy corrosion and difficult cleaning of the inner walls of a used transportation pipeline and a container in petroleum extraction, transportation and heat exchange; the polytetrafluoroethylene is made as an inner wall coating layer; the anti-abrasion capacity and the anti-corrosion capacity of an integral crude oil extraction equipment can be improved; the friction resistance coefficient between the crude oil and the inner wall of a pipeline in a petroleum transportation procedure is reduced; the value of the friction coefficient is within 0.05-0.15; thus, the energy consumption of transportation equipment and the crude oil walling quantity are reduced; equipment is cleaned easily because of the non-stain feature of the polytetrafluoroethylene; therefore, the cleaning periods of the container and the pipeline can be prolonged; the use quantity of cleaning agent and water are saved greatly; the emission of sewage is reduced; and the cost of sewage treatment is reduced so as to achieve the effect of energy conservation and environment protection.

Description

Technical field [0001] The invention relates to a material application field, in particular to the application of polytetrafluoroethylene in crude oil mining equipment. Background technique [0002] Crude oil is corrosive and has a high viscosity. Therefore, in the process of mining and transportation, it is easy to cause problems such as high energy consumption of the transportation equipment, easy corrosion, and difficult cleaning. For this reason, the method of heating and heating crude oil is used to reduce its viscosity and flow resistance, which is convenient for the transportation of crude oil in the pipeline. With the increase in temperature, the corrosiveness of crude oil to equipment has also increased. In order to work safely, the equipment needs to be cooled down. For this reason, the temperature returned to normal temperature and the viscosity of crude oil became normal, which caused difficulties in cleaning, and excessive detergent and water consumption, which in...

Claims

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Application Information

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IPC IPC(8): F16L58/10
Inventor 金文涛廉美蓉刘英凡李智勇邓堡王钊李冬翌
Owner CHINA NAT OFFSHORE OIL CORP
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