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Multi-level material balance data correction method for petroleum refinery

A data correction and material balance technology, applied in the direction of total factory control, total factory control, electrical program control, etc., can solve problems such as unsatisfactory, error detection and processing rely on human experience, etc., to avoid pathological problems, avoid Destructive effects, effects that facilitate data integration

Inactive Publication Date: 2008-02-27
ZHEJIANG UNIV
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  • Abstract
  • Description
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Problems solved by technology

[0003] For large oil refineries, the global material balance data correction algorithm commonly used today cannot obtain satisfactory results due to the complexity of the material balance model, and the detection and processing of significant errors still rely on human experience

Method used

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  • Multi-level material balance data correction method for petroleum refinery
  • Multi-level material balance data correction method for petroleum refinery
  • Multi-level material balance data correction method for petroleum refinery

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Embodiment Construction

[0032] The specific implementation steps of the method will be described by taking the production flow diagram of a certain oil refinery shown in the accompanying drawings as an example.

[0033] 1) Number each incoming raw material stream as: r 1 r 2 r 3 ; The logistics number of each ex-factory product is: u 1 u 2 u 3 u 4 u 5 u 6 ;The number of intermediate logistics except inbound and outbound logistics is: x 1 x 2 x 3 ......x 28 , these intermediate streams include the loss of each production unit; number the change of each storage tank as: t 0 t 1 t 2 ......t 11 ;

[0034] 2) Establish the balance equation of the purchase, sale and storage level of the whole plant:

[0035] A 1 x 1 =b 1

[0036] Among them, X 1 is a column vector composed of the storage tank variation and device loss marked in step 1):

[0037] x 1 =[x 7 x 13 x 17 x 23 x 2 x 9 x 15 x 19 t 0 t 1 t 2 t 3 t 4 t 5 t 6 t 7 t 8 t 9 t 10 t 11 ] T , A 1 is a row vector...

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Abstract

This invention discloses a sort of emendation method of multilayer mass balance which is used for refinery. Above all this method adopts the measure data of the entering-factory, the leaving-factory and the repertory to progress the data emendation of the storage and the sale, and then the result calculated by the first step is to be the obligation in order to progress the emendation to the data of the process units and the oil active lay, accordingly obtaining the exact data which is accord with the summary of mass balance. The excellence of this invention is that: 1) this invention availably avoids that marked error of the measuring instrument works the destructive infection to the result of data harmony. 2) This invention reduces the problematic size of the summary of data harmony in order to avoid the ill problem which is in the numerical calculation brought by the inversion of the commercial scale matrix. 3) The principium of this invention is simple, and the execution is convenient, it is easy to realize the integration of the data connects with other utility system.

Description

technical field [0001] The invention relates to a method for correcting multi-level material balance data of an oil refinery. Background technique [0002] Accurate measurement data is an important basis for computer process monitoring, optimization, scheduling and decision analysis. But in actual measurement, measurement errors are inevitable, including random errors and significant errors. Significant errors are caused by the failure of measuring instruments or leakage of measuring pipelines; while random errors are generated in the process of measurement, transmission, and transformation. It is generally believed that random errors satisfy the normal distribution law of zero mean. The main purpose of data correction is to reduce the influence of measurement errors so as to improve the integrity and accuracy of data. [0003] For large oil refineries, the global material balance data correction algorithm commonly used today cannot obtain satisfactory results due to the c...

Claims

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Application Information

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IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 荣冈王旭许华冯毅萍李笕列
Owner ZHEJIANG UNIV
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