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Multi-stage phase change spray granulation nozzle for granulating asphalt residues

A spray granulation and nozzle technology, applied in the field of flash spray granulation nozzles, can solve the problems of low density, difficult storage and transportation of asphalt granules, and achieve the effect of simple structure and convenient storage and transportation

Inactive Publication Date: 2011-03-23
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology

[0003] In order to overcome the high pressure of the existing spray granulation system due to the high pressure of the supercritical spray granulation process, the pressure of the primary flash atomization is suddenly reduced, the solvent is vaporized, the gas volume expands violently, and the formed asphalt particles are loose and the density is too low. To bring difficulties to the storage and transportation of asphalt particles, the present invention proposes a multi-stage phase change flash atomization nozzle, through the designed new structure, a multi-stage phase change process is formed inside the nozzle to control mass transfer and heat transfer Speed, inhibiting the expansion speed of gas, can form solid asphalt particles with dense texture and high density, which is convenient for the storage and transportation of asphalt particles

Method used

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  • Multi-stage phase change spray granulation nozzle for granulating asphalt residues
  • Multi-stage phase change spray granulation nozzle for granulating asphalt residues

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Embodiment Construction

[0013] The working process of the nozzle of the present invention will be described below in conjunction with the accompanying drawings.

[0014] refer to figure 1 , the secondary nozzle 2 is cylindrical, with a diameter of d1 and a height of b1, and the variation range of b1 is 0.2d1-50.0d1. The throttling expansion cavity 3 is a cylindrical cavity with a diameter of d2 and a height of b2. The front part is connected with the secondary nozzle 2, and the rear part is connected with the primary nozzle 4; the variation range of d2 is 0.1d1 ~20.0d1, and the range of b2 is 1.0d1~100.0d1. The primary nozzle 4 is cylindrical, with a diameter of d3 and a height of b3. The variation range of d3 is 0.1d1-5.0d1, and the variation range of b3 is 0.2d1-50.0d1. The inlet 5 of the nozzle is cylindrical, and the variation range of the inner diameter d4 of the inlet is 1.5d1-20.0d1.

[0015] The use process of the multistage phase change spray granulation nozzle of the present invention ca...

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Abstract

The invention discloses a multi-stage phase change spray granulation nozzle. A multi-stage phase change process can be formed inside the nozzle, so that solvent vaporization and gas expansion speeds can be controlled, solid asphalt particles with compact texture and high density can be formed and asphalt particles are convenient to store and transport.

Description

Technical field [0001] The invention belongs to petrochemical equipment, in particular to a flash spray granulation nozzle of a spray granulation tower. Background technique [0002] In the new heavy oil processing technology - heavy oil supercritical cascade extraction separation process, after the separation of high-quality components such as deasphalted oil, the remaining residues such as asphalt and colloids need to be subjected to flash spray granulation for subsequent processing and application. Due to the high pressure of the supercritical fluid, in the process of spray granulation, the pressure of flash atomization suddenly drops, the solvent vaporizes, and the gas volume expands violently. Transport poses difficulties. Therefore, it is necessary to develop a new spray granulation nozzle, which can control the expansion speed of the gas to form dense and dense asphalt solid particles. At present, there is no mature technology to solve this problem. Contents of the...

Claims

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Application Information

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IPC IPC(8): B01J2/04C10C3/14
Inventor 毛羽徐春明赵锁奇王娟孙学文王江云
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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