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Vapor-liquid two-phase fluid pipeline system

A pipeline system and phase flow technology, which is applied in pipeline systems, gas/liquid distribution and storage, mechanical equipment, etc. make any instructions etc.

Active Publication Date: 2016-04-20
SINOPEC ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It does not give any instructions on the pipeline connecting the feed port of the flash column / primary distillation column and the heat exchanger, such as the selection of the diameter of the pipeline, the layout of the pipeline, the use of the pipe fittings, etc., given that this section of the pipeline is subject to heat exchange Due to the constraints of the device frame, equipment size and the feed position of the flash tower / primary distillation tower, without proper description and restrictions on the pipeline, it will not be possible to ensure that the pipeline meets the thermal stress compensation requirements, and the vibration (shaking) phenomenon of the pipeline cannot be eliminated.

Method used

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  • Vapor-liquid two-phase fluid pipeline system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 As shown, a vapor-liquid two-phase flow pipeline system is connected between the outlet of the heat exchange equipment and the inlet 4 of the fractionation tower, and consists of two branch pipelines 2-1 / 2-2 and a main pipeline 3, of which two The axis of the horizontal pipe 10-1a / 10-2a of the branch pipeline and the axis of the main pipeline 3 are in the same plane.

[0044]In the branch pipeline A2-1, the outlet 1-1 of the heat exchange equipment A is reduced in the vertical direction by the size head 7, and then connected to the 90° elbow 5 through the vertical pipeline 9, and the main pipeline is connected to the 90° elbow 5 After the 3 direction is turned, the horizontal pipeline 10-1a is connected, and the horizontal pipeline 10-1a is connected to a horizontal pipeline after being turned by the 45° elbow 6. After that, the branch pipeline 2-1 is connected to the end of the main pipeline 3 through the 45° elbow 6 ; In the branch pipeline B2-2, the...

Embodiment 2

[0046] Such as figure 2 As shown, a vapor-liquid two-phase flow pipeline system is connected between the outlet 1-1 / 1-2 / 1-3 of the heat exchange equipment and the inlet 4 of the fractionation tower, and consists of three branch pipelines 2-1 / 2 -2 / 2-3 and the main pipeline 3, wherein the plane formed by the axes of the horizontal pipes 10-1a / 10-2a / 10-3a of the three branch pipelines is above the horizontal plane where the axis of the main pipeline 3 is located.

[0047] In the branch pipeline A2-1, the outlet A1-1 of the heat exchange equipment is connected to a vertical pipeline 9 upwards, and then turns to the main pipeline 3 through a 90° elbow to connect to the horizontal pipeline 10-1a, and then turns to the horizontal pipeline 10-1a through a 90° elbow 5 To the top of the main pipeline 3, after that, connect the obliquely downward pipeline 11 (obliquely to the flow direction of the material flow) downward at an angle of 45 °, and change the diameter through the large and...

Embodiment 3

[0049] Such as image 3 As shown, a vapor-liquid two-phase flow pipeline system is connected between the outlet 1-1 / 1-2 of the heat exchange equipment and the inlet 4 of the fractionation tower, and consists of two branch pipelines 2-1 / 2-2 and the total Composed of pipelines 3, the horizontal plane where the axis of the branch pipeline 2-1 horizontal pipe 10-1a is located is located below the horizontal plane where the axis of the main pipeline 3 is located, and the horizontal plane where the axis of the branch pipeline 2-2 horizontal pipe 10-2a is located is located below the horizontal plane where the axis of the main pipeline 3 is located above.

[0050] In the branch pipeline A2-1, the outlet A1-1 of the heat exchange equipment is changed in the vertical direction through the size head 7, then passes through a vertical pipeline 9, and then turns to the horizontal pipeline 10-1a through the 90° elbow 5, The horizontal pipe is connected to a 45° upward straight pipe 12 (obl...

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Abstract

The invention discloses a vapor-liquid two-phase fluid pipeline system. The vapor-liquid two-phase fluid pipeline system is connected between an outlet of heat exchange equipment and a feeding opening of a fractionation or flash evaporation tower and consists of branch pipelines and a main pipeline. The main pipeline is connected to the feeding opening of the fractionation or flash evaporation tower by a straight pipe or an elbow pipe not larger than 60 degrees. The branch pipelines begin from the outlet of the heat exchange equipment, are horizontally laid through 90-degree bends and then extend to the main pipeline. The branch pipelinesare horizontally connected with the main pipeline in a manner of oblique inserting or vertically downwards connected with the main pipeline in a manner of oblique inserting, and the connecting included angles between the branch pipelines and the main pipeline are not larger than 60 degrees. Otherwise, the branch pipelinesare connected with the main pipeline by not-larger-than 60-degree elbow pipes in a not-larger-than 60-degree oblique inserting manner. The vapor-liquid two-phase fluid pipeline system meets the flow state requirements of vapor-liquid two-phase fluid and achieves the purpose of eliminating the swing of the vapor-liquid two-phase fluid pipeline.

Description

technical field [0001] The invention relates to the technical field of process pipeline design in petroleum refining and petrochemical production equipment, and furthermore, relates to a vapor-liquid two-phase flow pipeline system, in particular to the feed from the outlet of heat exchange equipment to a fractionation tower or a flash tower A section of process pipeline, such as the initial distillation tower or flash tower feed pipeline of crude oil atmospheric and vacuum distillation unit. Background technique [0002] In the field of refining and chemical industry, it is often not only the heating furnace or reboiler that provides heat to the fractionation column, but also heat exchange equipment. The raw material obtains heat through heat exchange with the heat medium, and vaporization has occurred inside the heat exchange equipment, forming a vapor-liquid two-phase flow state, or due to pressure control, no vaporization occurs in the heat exchange equipment, but after p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D1/00
Inventor 王亚彪黄晓三袁毅夫章忻吴小平
Owner SINOPEC ENG