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Low dropout decompression transfer line

A technology of oil transfer line and low pressure drop, applied in the direction of rigid pipes, distillation separation, pipes, etc., can solve the problems of poor vaporization effect of oil products, high outlet temperature of decompression furnace, affecting oil extraction rate, etc., and achieves improvement The effect of product quality, lower outlet temperature, and optimized vaporization effect

Active Publication Date: 2010-12-08
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, domestic oil transfer lines such as Image 6 As shown, it is composed of 90-degree elbow 1 with equal diameter, 30-60-degree elbow 2, transition section straight pipe 6 and low-velocity section 5; there are problems of large pressure drop, large temperature drop, and excessive local flow velocity during use.
On the one hand, the high-pressure drop transfer oil line will make the vaporization effect of the oil product poor, which will affect the extraction rate of the oil product; Easy to crack and coke
In addition, the oil flow rate in the high-pressure drop transfer line will be too high, which will easily cause problems such as vibration of the piping system

Method used

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  • Low dropout decompression transfer line
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  • Low dropout decompression transfer line

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Experimental program
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Embodiment Construction

[0020] The present invention is compared with prior art as follows:

[0021] Image 6 It is a schematic diagram of the structure of a petrochemical company's decompression to oil transfer line. The decompression furnace tube is a four-way exit, which is drawn out at the top of the furnace, goes vertically upwards and passes through a 90-degree elbow, then along a section of horizontal straight pipe, and then passes through a horizontal 45-degree elbow, and the four-way transition section is combined and inserted into the low-speed section, and the straight pipe of the low-speed section is horizontal at an angle of 45 degrees. The low-speed section has a diameter of 1.4m and a length of about 28m.

[0022] Will Image 6 The structure of the oil transfer line is optimized, and the optimized structure is as follows Figure 1a Fig. 1b and Figure 1c As shown, a 90-degree expanding elbow 1 with a radius of curvature of 3 to 6 times the diameter of the elbow is connected to a 30-...

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Abstract

A low dropout decompression transfer line of the invention is used in a pipeline between a vacuum furnace and a vacuum tower of an atmosphere and vacuum distillation unit in the process of oil refining and in other devices for transporting oil products with high temperature and low pressure. The low dropout decompression transfer line comprises a 90 degree extend elbow, a 30-60 degree elbow, a transition section and a low speed section; wherein, the transition section adopts a structure of progressive hole enlargement, the 90 degree extend elbow is one with the curvature radius being 3-6 times of the diameter of a bent pipe, and the transition section is structured in the way that a trousers-shaped straight tee (3) with 15-30 degree of included angle is connected with a Y-shaped straight tee (4) in the shape of trousers with 45-90 degree of included angle. The invention adopts the principle of pipe diameter extending and smooth processing at joints, reduces resistance loss in the process of flowing and pressure drop of the transfer line and optimizes vaporization effect of the oil products, thus improving distillate yield and generating appreciable economic benefits.

Description

technical field [0001] A low pressure drop and decompression oil transfer line of the present invention is used for the pipeline between the decompression furnace and the decompression tower of the atmospheric and vacuum distillation device in the oil refining process, and other transportation devices related to high temperature and low pressure petroleum products. Background technique [0002] The decompression oil transfer line is the material delivery pipeline between the decompression furnace and the decompression tower. A reasonably designed low-pressure decompression oil transfer line is conducive to improving the vaporization rate of oil products, increasing the extraction rate of the decompression tower, and improving the decompression. Sideline product quality. Since the diameter of the low-speed section of the decompression oil transfer line is generally 1 to 2 meters, it is a pipeline with a complex structure and a large scale. The flow process of atmospheric res...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L9/18B01D3/00
Inventor 李鑫钢隋红秦娅姜斌罗铭芳
Owner TIANJIN UNIV
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