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A method for optimizing reaction conditions of industrial hydrocracking

A technology for hydrocracking and optimization methods, which is applied in data processing application, prediction, calculation, etc., can solve the problems that the processing method cannot achieve the optimization of multiple target parameters, and there are many operating parameters.

Active Publication Date: 2019-11-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for the hydrocracking reaction, there are many operating parameters, and there are more than three production data to be optimized. The processing method of this patent cannot realize the optimization of multiple target parameters.

Method used

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  • A method for optimizing reaction conditions of industrial hydrocracking
  • A method for optimizing reaction conditions of industrial hydrocracking
  • A method for optimizing reaction conditions of industrial hydrocracking

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Firstly, the distillate oil products corresponding to 27 groups of experiments with different temperature, processing capacity and hydrogen partial pressure were sequentially extracted from the 40ml small-scale hydrogenation unit according to different process conditions, and the density of the produced oil and the yield of light naphtha under the 27 process operating conditions were respectively collected. rate and medium oil selectivity data. The temperature, processing capacity and hydrogen partial pressure of hydrocracking reaction were normalized respectively (divided by the maximum value of relevant process variables) as independent variables, and the density of produced oil, light naphtha yield and medium oil selectivity were used as independent variables. For the function, the third degree B-spline method is used for interpolation calculation, and three implicit numerical functions about the operating process variables and the properties of the three types of pro...

Embodiment 2

[0068] Example 2 is to optimize the conversion rate of the cracking reaction under the same algorithm conditions as in Example 1, only by adjusting the reaction temperature and the processing capacity. Since the calculation this time is the minimum value of the tail oil conversion rate of the optimization function, the adaptive function is written as the reciprocal of the objective function, and the rest of the method is the same as that of Embodiment 1. The objective function is the conversion rate of distillate oil (the conversion rate of raw material heavy oil into light component). The tail oil is the desired target product, and the tail oil no longer participates in the conversion.

[0069] The standard mathematical form of an optimization problem is:

[0070]

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Abstract

The present invention provides an optimization method of an industrial hydrocracking reaction condition. The method comprises the steps: 1) collecting production data of the industrial hydrocracking reaction of an industrial hydrocracking device in different operation conditions; 2) taking the production data as a target function to be optimized of a hydrocracking process, and taking operation conditions as related optimization variables; 3) building the implicit numerical function relation or the dominant function analysis relation of the target function, the constraint function and the calculation parameters; and 4) employing a target optimization algorithm to perform target optimization. The optimization method of an industrial hydrocracking reaction condition establishes an accurate high-dimensional implicit function dependency relation between refined oil product performance indexes and operation technology conditions, and is able to associate the refined oil product performance indexes with the operation technology conditions through adoption of a numerical method. The optimization method of the industrial hydrocracking reaction condition is not restricted by the convexity of a complex target function to be optimized and the differentiability, and is more adapted to the high non-linear characteristic of the hydrocracking reaction.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, and in particular relates to a method for optimizing a hydrogenation process. Background technique [0002] With the deteriorating and heavy quality of crude oil in the world, the increasing diversity of crude oil processed by refineries in my country and the continuous emergence of various catalysts. The performance evaluation results and regularity of various products obtained by the process operation are also complicated, and the various performance requirements for various refined oil products are also complicated due to different needs. The essence of catalyst research and development and process operation is nothing more than optimizing a certain index or a certain type of index under the condition of taking into account and weighing various gains and losses. This optimization process can be described in mathematical language as: under the constraints of specific equality and inequali...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/04G06N3/12
Inventor 王阔
Owner CHINA PETROLEUM & CHEM CORP
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