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A Modeling and Optimization Method for Wax Oil Hydrocracking Process

A cracking process and hydrocracking technology, applied in design optimization/simulation, CAD numerical modeling, special data processing applications, etc., can solve problems such as difficult to solve, too simple, and cannot accurately reflect the operation of production equipment

Active Publication Date: 2021-08-10
EAST CHINA UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hydrocracking also has theoretical research related to lumping. Because the existing lumped models are either too complex and difficult to solve; or too simple to accurately reflect the actual operation of the production unit

Method used

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  • A Modeling and Optimization Method for Wax Oil Hydrocracking Process
  • A Modeling and Optimization Method for Wax Oil Hydrocracking Process
  • A Modeling and Optimization Method for Wax Oil Hydrocracking Process

Examples

Experimental program
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Effect test

Embodiment 1

[0124] 1. Determine the parameters under the specific reaction pressure and hydrogen-oil ratio according to the industrial hydrocracking unit: including design parameters (each bed length, diameter) and operating data (feed flow rate, each bed inlet and outlet temperature, feed and product Relative density and distillation range data, product yield), and according to lump theory, raw materials and products are divided into 6 lumps.

[0125] 2. Determine the hydrocracking reaction kinetic equation, material balance equation and energy balance equation. Using lump theory, considering that the reaction pressure and hydrogen-oil ratio are stable during the reaction process, and the reactant flow rate changes linearly (axially), a hydrocracking lump kinetic model is established, and the rate constant is calculated by the Arrhenius equation , the reactor is approximated as a plug flow reactor, regardless of the radial diffusion of the reactor, the reaction kinetic equation is as fol...

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Abstract

The invention relates to a modeling and optimization method for wax oil hydrocracking process. The modeling method of the present invention includes determining the design parameters and operating data required for modeling according to the industrial hydrocracking unit, and determining the hydrocracking lump division method, wherein the design parameters include the length and diameter of each bed, and the The above operation data include feed flow, inlet and outlet temperature of each bed, relative density of feed and product, distillation range data and product yield; determine hydrocracking reaction network, reaction kinetic equation, material balance equation and energy balance equation ; Solution of hydrocracking mechanism model; Correction of lumped kinetic parameters of hydrocracking based on actual industrial operation data. The invention has wide adaptability and can be used for simulating and optimizing hydrocracking industrial reactors with different requirements of reaction bed layers and product yield.

Description

technical field [0001] The invention relates to a modeling and optimization method for wax oil hydrocracking process, which can be used for simulation and operation optimization of industrial hydrocracking process. Background technique [0002] Hydrocracking refers to the process of hydrogenation, cracking and isomerization of heavy oil under the conditions of high temperature, high pressure, hydrogen partial pressure and the presence of hydrocracking catalyst to generate light oil, accompanied by desulfurization, Reaction of impurities such as nitrogen, oxygen and metals. The main features of hydrocracking can be summarized as follows: [0003] (1) Hydrocracking is an important means to mass-produce high-quality middle distillates and adjust oil structure; moreover, it is the only important means that can directly produce low-sulfur, low-aromatic clean fuel oil while lightening; [0004] (2) Hydrocracking does not require pretreatment of raw materials, and can directly pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F111/10
CPCG06F30/20G06F2111/10
Inventor 钱锋杨明磊范琛钟伟民杜文莉
Owner EAST CHINA UNIV OF SCI & TECH
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