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Automatic crude oil blending controlling method

A crude oil blending technology, which is applied in the flow control of electric devices, etc., can solve the problems of inaccurate proportioning, high operating intensity, and poor safety, and achieve the effects of improving production efficiency, ensuring safety, and avoiding damage

Active Publication Date: 2012-07-18
南京富岛信息工程有限公司
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of inaccurate proportioning, poor safety and high operation intensity when oil refining enterprises widely use manual blending to provide different types of crude oil to CDU for processing after proportioning. The blending automatic control method adopts technologies such as rolling correction of crude oil flow deviation, crude oil pipeline anti-overpressure alarm, and crude oil flow synchronous control to realize automatic proportioning of crude oil flow, provide CDU with crude oil that meets the property requirements, and avoid crude oil property fluctuations to CDU and the damage caused by subsequent processing devices, and improve production efficiency

Method used

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  • Automatic crude oil blending controlling method

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0037] Taking the actual implementation of the present invention in a refining and chemical enterprise as an example, the detailed implementation and specific operation process are given below. The enterprise has 3 blending lines and 6 crude oil component tanks. This embodiment is implemented on the premise of the technical solution of the present invention, but the protection scope of the present invention is not limited to the following embodiments.

[0038] like figure 2 As shown, the system includes a blending component tank 1, a blending pump 2, a pressure gauge 3, a cut-off valve 4 before the flow meter, a cut-off valve 5 after the flow meter, a flow meter 6, a regulating valve 7, a static mixer 8, a regulating valve A buffer tank 9, a return valve 10, a programmable controller 11 and a monitoring computer 12.

[0039] like figure 1 As shown, ...

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Abstract

The invention discloses an automatic crude oil blending controlling method, which can automatically compensate the accumulated flow deviation of the last control period in the current control period and realize rolling correction of the flow deviation. When the pressure of a random blending line is greater than a safety value, a system can automatically increase the opening of a blending line reflux valve and pop up an alarm prompt; and when the opening of the reflux valve is greater than a certain value and the pressure is still greater than the safety value, the system automatically pops up a pump stopping prompt, so that safe operation of the system is ensured. When the opening of a certain blending line adjusting valve is greater than a certain value and the flow still cannot reach a set value, the system can automatically reduce the set flow of other blending lines, so that unchangeable flow ratio is ensured, and synchronous flow control is realized. By accurately controlling the flow of each crude oil blending line, crude oil meeting the property requirement is provided for a normal pressure reducing device, damage to a processing device due to the property fluctuation of the crude oil is avoided, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the field of crude oil processing in oil refining enterprises, in particular to an automatic control method for crude oil blending. Background technique [0002] At present, in the petroleum and petrochemical industries, the automatic blending technology of refined oil (such as gasoline and diesel) has been widely used, but the automatic blending technology has not been used in crude oil processing. In refining and chemical enterprises, the atmospheric and vacuum unit (CDU) is the first link in crude oil processing. The CDU has strict requirements on the properties of crude oil (such as sulfur content) in production. At present, oil refining enterprises widely use manual blending to mix different Varieties of crude oil are supplied to CDU for processing after proportioning, but there are problems such as inaccurate proportioning, poor safety, and high operating intensity. Contents of the invention [0003] The purpose of the...

Claims

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Application Information

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IPC IPC(8): G05D7/06
Inventor 陈夕松周家庆叶彦斐张勇气张晓军
Owner 南京富岛信息工程有限公司
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