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Method and system for determining relationship between refined throat size and gas-liquid velocity difference

A speed difference and throat technology, applied in the direction of fluid velocity measurement, velocity/acceleration/shock measurement, measuring device, etc.

Active Publication Date: 2017-04-19
烟台中科力信科技有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the prior art, the correlation control between nozzle outlet throat diameter, atomization result control parameters (nozzle outlet gas-liquid velocity difference), and steam consumption needs to be further explored and improved to reduce energy consumption and achieve optimal refining effect

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  • Method and system for determining relationship between refined throat size and gas-liquid velocity difference
  • Method and system for determining relationship between refined throat size and gas-liquid velocity difference
  • Method and system for determining relationship between refined throat size and gas-liquid velocity difference

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Embodiment Construction

[0044] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0045] The refining nozzle mentioned in this application refers to the crude oil refining nozzle.

[0046] like figure 1As shown, it is a flow chart of the method for determining the relationship between the refining nozzle throat size and the gas-liquid velocity difference in the present invention, including:

[0047] Step 1, determine the gas flow model inside the refining nozzle;

[0048] Step 2, according to a specific equation, obtain the maximum value D of the throat diameter of the nozzle outlet under supersonic flow max ;

[0049] Step 3, obtaining measurement parameters during the catalytic cracking process of crude oil, including nozzle outlet throat diameter D, steam intake volume, outlet steam velocit...

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Abstract

The invention relates to a method and system for determining the relationship between refined throat size and gas-liquid velocity difference. The method for determining the relationship between refined throat size and gas-liquid velocity difference includes step 1 determining the gas flow model inside a crude oil refining nozzle; step 2 acquiring the maximum value of the nozzle outlet throat diameter at the supersonic flow; step 3 acquiring the measurement parameters, including the nozzle liquid film thickness, the nozzle outlet throat diameter, and the steam input, in the process of crude oil catalytic cracking; and step 4 calculating the relationship between nozzle throat size and liquid film thickness according to the measurement parameter fitting formula. The relationship between the nozzle throat size of a crude oil refined nozzle and the liquid film thickness is analyzed and simulated, so that the optimal relationship range between the nozzle throat size and the liquid film thickness during the atomization process of crude oil is obtained and the guidance for improving the crude oil refining performance and reducing the energy consumption is provided.

Description

technical field [0001] The invention relates to the field of petrochemical industry, in particular to a method and a system for determining the relationship between the throat size of a refinery nozzle and the gas-liquid velocity difference. Background technique [0002] In recent years, in the process of catalytic cracking oil refining, due to the inferior and heavy trend of raw oil, higher requirements have been put forward for the atomizing nozzle of catalytic cracking raw oil. The raw material oil atomization nozzle is based on the atomization mechanism of the high-speed flow process. The double-throat configuration nozzle is a nozzle configuration that can achieve high-efficiency atomization. The opening at the rear end of the throat enters the mixing chamber. After the steam is fully accelerated through the first throat, it forms a strong shear flow with crude oil in the mixing chamber. After passing through the second throat, it rubs, mixes and atomizes, and then the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P5/00
CPCG01P5/00
Inventor 魏延鹏谭克勤
Owner 烟台中科力信科技有限公司
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