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Modeling method of energy dissipation regulation model under miha pure pneumatic operating conditions

A technology of purely aerodynamic conditions and operating conditions, applied in chemical machine learning, chemical process analysis/design, chemical data mining, etc., can solve problems such as limited desulfurization rate and difficult sulfur removal

Active Publication Date: 2022-06-21
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since asphaltene is the macromolecule with the largest relative molecular mass, the most complex structure and the strongest polarity in residual oil, the sulfur in it is difficult to remove, resulting in limited desulfurization rate in the process of residual oil hydrodesulfurization

Method used

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  • Modeling method of energy dissipation regulation model under miha pure pneumatic operating conditions
  • Modeling method of energy dissipation regulation model under miha pure pneumatic operating conditions
  • Modeling method of energy dissipation regulation model under miha pure pneumatic operating conditions

Examples

Experimental program
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Effect test

Embodiment 1

[0080] S100. Analyze the bubble generation process under pure pneumatic conditions, and establish an energy conversion model in the bubble breaker;

[0081] Before gas was introduced, the bubble breaker was filled with static reaction liquid. When the gas starts to be introduced, due to the gas pressure P G and system operating pressure P m There is a pressure difference ΔP between them, the static pressure of the gas will be transferred to the liquid, causing the liquid to turbulent, and the gas itself pressure will quickly reduce to the operating pressure in the MIHA. Due to the gas-liquid two-phase flow, the gas-liquid flows out from the bubble breaker. For pneumatic operating conditions, the liquid flow Q L much smaller than the gas flow Q G , the energy required for the operation of the system is almost entirely provided by the gas pressure energy.

[0082] build as figure 1 The physical model diagram shown is:

[0083] It is assumed that the liquid in the system i...

Embodiment 2

[0146] This embodiment specifically describes the energy dissipation regulation model constructed based on the method of Embodiment 1.

[0147] The energy dissipation regulation model obtained based on the modeling method of Example 1 is as follows:

[0148]

[0149]

[0150]

[0151]

Embodiment 3

[0153] In this example, based on the modeling method of Example 1, the supply pressure difference ΔP and the ventilation rate Q are studied for the specific reactor structure and reaction system. G to the energy dissipation rate ε mix Impact.

[0154] (1) Supply air pressure difference ΔP versus energy dissipation rate ε mix Impact;

[0155] The calculation conditions are as follows:

[0156] Crusher diameter D 1 =0.02m; the ratio of the diameter of the bubble breaker nozzle to the diameter of the breaker K 1 =0.5;

[0157] Residue density ρ L =800Kg / m 3 ;Operating pressure P m =14MPa; supply pressure difference ΔP=1~10MPa; gas temperature T=450℃.

[0158] Supply air pressure difference ΔP versus energy dissipation rate ε mix impact such as figure 2 shown (ventilation volume 80L / h);

[0159] (2) Supply air pressure difference ΔP versus gas holdup φ G Impact;

[0160] The calculation conditions are the same as (1); the results are as follows image 3 shown;

[...

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Abstract

The invention relates to an energy dissipation control model modeling method under pure aerodynamic operation conditions of MIHA. By analyzing the bubble generation process under pure aerodynamic conditions, the energy conversion model in the bubble breaker is established; based on the energy conversion model and liquid circulation in the bubble breaker , calculate the liquid flow rate, and finally obtain the energy dissipation rate in the gas-liquid intense mixing zone. The method of the present invention establishes an energy dissipation control model under purely aerodynamic operating conditions for MIHA, which comprehensively reflects the reactor structure, system physical properties and operating parameters, and the input energy on ε mix , and the construction of the energy dissipation control model is to further study the influence of the reactor structure, system physical properties and operating parameters on the average diameter of the microbubble Sauter 32 The key to influence can realize the guidance of reactor design and MIHA reaction system design, and guide the design of efficient reactor structure and reaction system.

Description

technical field [0001] The invention belongs to the technical field of reactors and modeling, and particularly relates to a modeling method for an energy dissipation regulation model under MIHA pure pneumatic operation conditions. Background technique [0002] For the consideration of global environmental protection, the sulfur content of marine fuel oil must be reduced. For example, the sulfur content of marine fuel oil in high seas must be reduced to 0.5%. Therefore, it is imperative to replace high-sulfur residual fuel oil with low-sulfur distillate fuel oil. Most of the sulfur in crude oil exists in the residual oil, and the sulfur in the residual oil is mainly distributed in aromatic hydrocarbons, colloids and asphaltenes, and most of the sulfur exists in the form of five-membered ring thiophene and thiophene derivatives. Generally, the C-S bond of the residual oil macromolecules is broken through hydrogenolysis reaction, and the sulfur is converted into hydrogen sulfid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G16C20/10G16C20/70
Inventor 张志炳周政陈思田洪舟李磊张锋
Owner NANJING UNIV