Method for establishing aromatic hydrocarbon production flow model

A production process and model technology, applied in the fields of organic chemistry, distillation purification/separation, adsorption purification/separation, etc., can solve problems such as the inability to reflect the real product composition, the inability to reflect the real product composition, and the inaccuracy of the aromatic hydrocarbon production process model.

Active Publication Date: 2014-12-31
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

Therefore, the above product composition is data under certain conditions and cannot reflect the real product composition when the conditions change. Therefore, the existing aromatics production process model is inaccurate and cannot reflect the real product composition when the reaction conditions change

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  • Method for establishing aromatic hydrocarbon production flow model

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[0009] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0010] figure 1 A flow chart showing the aromatics production process. Such as figure 1 As shown, naphtha is separated into carbon 5 (C5) stream, C6 / C7 stream and C8+ stream by reforming unit. The C5 stream flows out, and the C6 / C7 stream enters the aromatics extraction unit, and the separated products are raffinate, a mixture of benzene and toluene. The extracted benzene and toluene mixture enters the BT fractionation tower. In addition, the disproportionation reactants also enter the BT fractionation tower to separate benzene, toluene and C8+ streams. The benzene flows out. The toluene is used as the raw material for the transalkylation and disproportionati...

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Abstract

The invention discloses a method for establishing an aromatic hydrocarbon production flow model. The method comprises steps of: establishing a reformate fractionation model, a xylene fractionation model, an aromatic hydrocarbon extraction model, a benzene toluene fractionation model and an adsorption separation model according to actual production data; and according to the reaction mechanism and actual production data, establishing an isomerization model and an alkyl group transfer and disproportionation model. The isomerization model and the alkyl transfer and disproportionation model reflect the relationship between discharging and reaction conditions and charging components. Through the above technical scheme, the isomerization model and the alkyl transfer and disproportionation model are established; the models describe influences of the reaction conditions and charging components on discharging, thus utilizing the aromatic hydrocarbon production process model to accurately calculate yield of different aromatic hydrocarbons, and further optimizing aromatic hydrocarbon production process according to yield of different aromatics.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a method for establishing an aromatics production process model. Background technique [0002] Aromatics are important basic organic chemical raw materials in the petrochemical industry, especially benzene, toluene and xylene. The production of aromatics is mainly realized through the aromatics complex, and its main method is to adjust the output of different aromatics through isomerization, toluene disproportionation and transalkylation, etc., to obtain the maximum economic benefits. [0003] At present, an aromatics production process model can be established, and based on the model, the aromatics production process can be optimized to adjust the output of different aromatics and obtain the maximum economic benefits. ASPENTECH's PIMS model can optimize the aromatics process, but the PIMS model cannot be embedded in a nonlinear reaction model. In the process of process optimiza...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C15/08C07C15/073C07C15/06C07C15/04C07C7/04C07C7/12C07C7/148
Inventor 齐艳华郭锦标曹成武顾昊辉周涵房韡赵凌燕刘金凤牟晓辉
Owner CHINA PETROLEUM & CHEM CORP
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